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kernel/module.c
89.2 KB
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/* |
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Copyright (C) 2002 Richard Henderson |
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Copyright (C) 2001 Rusty Russell, 2002, 2010 Rusty Russell IBM. |
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This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ |
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#include <linux/export.h> |
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#include <linux/moduleloader.h> |
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#include <linux/ftrace_event.h> |
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#include <linux/init.h> |
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#include <linux/kallsyms.h> |
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#include <linux/fs.h> |
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#include <linux/sysfs.h> |
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#include <linux/kernel.h> |
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#include <linux/slab.h> #include <linux/vmalloc.h> #include <linux/elf.h> |
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#include <linux/proc_fs.h> |
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#include <linux/seq_file.h> #include <linux/syscalls.h> #include <linux/fcntl.h> #include <linux/rcupdate.h> |
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#include <linux/capability.h> |
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#include <linux/cpu.h> #include <linux/moduleparam.h> #include <linux/errno.h> #include <linux/err.h> #include <linux/vermagic.h> #include <linux/notifier.h> |
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#include <linux/sched.h> |
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#include <linux/stop_machine.h> #include <linux/device.h> |
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#include <linux/string.h> |
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#include <linux/mutex.h> |
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#include <linux/rculist.h> |
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#include <asm/uaccess.h> |
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#include <asm/cacheflush.h> |
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#include <asm/mmu_context.h> |
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#include <linux/license.h> |
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#include <asm/sections.h> |
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#include <linux/tracepoint.h> |
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#include <linux/ftrace.h> |
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#include <linux/async.h> |
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#include <linux/percpu.h> |
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#include <linux/kmemleak.h> |
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#include <linux/jump_label.h> |
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#include <linux/pfn.h> |
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#include <linux/bsearch.h> |
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|
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#define CREATE_TRACE_POINTS #include <trace/events/module.h> |
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#ifndef ARCH_SHF_SMALL #define ARCH_SHF_SMALL 0 #endif |
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/* * Modules' sections will be aligned on page boundaries * to ensure complete separation of code and data, but * only when CONFIG_DEBUG_SET_MODULE_RONX=y */ #ifdef CONFIG_DEBUG_SET_MODULE_RONX # define debug_align(X) ALIGN(X, PAGE_SIZE) #else # define debug_align(X) (X) #endif /* * Given BASE and SIZE this macro calculates the number of pages the * memory regions occupies */ #define MOD_NUMBER_OF_PAGES(BASE, SIZE) (((SIZE) > 0) ? \ (PFN_DOWN((unsigned long)(BASE) + (SIZE) - 1) - \ PFN_DOWN((unsigned long)BASE) + 1) \ : (0UL)) |
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/* If this is set, the section belongs in the init part of the module */ #define INIT_OFFSET_MASK (1UL << (BITS_PER_LONG-1)) |
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/* * Mutex protects: * 1) List of modules (also safely readable with preempt_disable), * 2) module_use links, * 3) module_addr_min/module_addr_max. |
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* (delete uses stop_machine/add uses RCU list operations). */ |
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DEFINE_MUTEX(module_mutex); EXPORT_SYMBOL_GPL(module_mutex); |
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static LIST_HEAD(modules); |
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#ifdef CONFIG_KGDB_KDB struct list_head *kdb_modules = &modules; /* kdb needs the list of modules */ #endif /* CONFIG_KGDB_KDB */ |
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/* Block module loading/unloading? */ int modules_disabled = 0; |
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/* Waiting for a module to finish initializing? */ static DECLARE_WAIT_QUEUE_HEAD(module_wq); |
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static BLOCKING_NOTIFIER_HEAD(module_notify_list); |
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/* Bounds of module allocation, for speeding __module_address. * Protected by module_mutex. */ |
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static unsigned long module_addr_min = -1UL, module_addr_max = 0; |
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int register_module_notifier(struct notifier_block * nb) { |
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return blocking_notifier_chain_register(&module_notify_list, nb); |
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} EXPORT_SYMBOL(register_module_notifier); int unregister_module_notifier(struct notifier_block * nb) { |
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return blocking_notifier_chain_unregister(&module_notify_list, nb); |
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} EXPORT_SYMBOL(unregister_module_notifier); |
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struct load_info { Elf_Ehdr *hdr; unsigned long len; Elf_Shdr *sechdrs; |
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char *secstrings, *strtab; |
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unsigned long symoffs, stroffs; |
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struct _ddebug *debug; unsigned int num_debug; |
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struct { unsigned int sym, str, mod, vers, info, pcpu; } index; }; |
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/* We require a truly strong try_module_get(): 0 means failure due to ongoing or failed initialization etc. */ |
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static inline int strong_try_module_get(struct module *mod) { if (mod && mod->state == MODULE_STATE_COMING) |
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return -EBUSY; if (try_module_get(mod)) |
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return 0; |
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else return -ENOENT; |
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} |
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static inline void add_taint_module(struct module *mod, unsigned flag) { add_taint(flag); |
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mod->taints |= (1U << flag); |
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} |
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/* * A thread that wants to hold a reference to a module only while it * is running can call this to safely exit. nfsd and lockd use this. |
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*/ void __module_put_and_exit(struct module *mod, long code) { module_put(mod); do_exit(code); } EXPORT_SYMBOL(__module_put_and_exit); |
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/* Find a module section: 0 means not found. */ |
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static unsigned int find_sec(const struct load_info *info, const char *name) |
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{ unsigned int i; |
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for (i = 1; i < info->hdr->e_shnum; i++) { Elf_Shdr *shdr = &info->sechdrs[i]; |
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/* Alloc bit cleared means "ignore it." */ |
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if ((shdr->sh_flags & SHF_ALLOC) && strcmp(info->secstrings + shdr->sh_name, name) == 0) |
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return i; |
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} |
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return 0; } |
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/* Find a module section, or NULL. */ |
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static void *section_addr(const struct load_info *info, const char *name) |
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{ /* Section 0 has sh_addr 0. */ |
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return (void *)info->sechdrs[find_sec(info, name)].sh_addr; |
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} /* Find a module section, or NULL. Fill in number of "objects" in section. */ |
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static void *section_objs(const struct load_info *info, |
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const char *name, size_t object_size, unsigned int *num) { |
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unsigned int sec = find_sec(info, name); |
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/* Section 0 has sh_addr 0 and sh_size 0. */ |
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*num = info->sechdrs[sec].sh_size / object_size; return (void *)info->sechdrs[sec].sh_addr; |
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} |
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/* Provided by the linker */ extern const struct kernel_symbol __start___ksymtab[]; extern const struct kernel_symbol __stop___ksymtab[]; extern const struct kernel_symbol __start___ksymtab_gpl[]; extern const struct kernel_symbol __stop___ksymtab_gpl[]; |
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extern const struct kernel_symbol __start___ksymtab_gpl_future[]; extern const struct kernel_symbol __stop___ksymtab_gpl_future[]; |
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extern const unsigned long __start___kcrctab[]; extern const unsigned long __start___kcrctab_gpl[]; |
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extern const unsigned long __start___kcrctab_gpl_future[]; |
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#ifdef CONFIG_UNUSED_SYMBOLS extern const struct kernel_symbol __start___ksymtab_unused[]; extern const struct kernel_symbol __stop___ksymtab_unused[]; extern const struct kernel_symbol __start___ksymtab_unused_gpl[]; extern const struct kernel_symbol __stop___ksymtab_unused_gpl[]; |
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extern const unsigned long __start___kcrctab_unused[]; extern const unsigned long __start___kcrctab_unused_gpl[]; |
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#endif |
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#ifndef CONFIG_MODVERSIONS #define symversion(base, idx) NULL #else |
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#define symversion(base, idx) ((base != NULL) ? ((base) + (idx)) : NULL) |
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#endif |
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static bool each_symbol_in_section(const struct symsearch *arr, unsigned int arrsize, struct module *owner, bool (*fn)(const struct symsearch *syms, struct module *owner, |
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void *data), |
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void *data) |
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{ |
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unsigned int j; |
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|
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for (j = 0; j < arrsize; j++) { |
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if (fn(&arr[j], owner, data)) return true; |
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} |
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return false; |
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} |
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/* Returns true as soon as fn returns true, otherwise false. */ |
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bool each_symbol_section(bool (*fn)(const struct symsearch *arr, struct module *owner, void *data), void *data) |
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{ struct module *mod; |
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static const struct symsearch arr[] = { |
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{ __start___ksymtab, __stop___ksymtab, __start___kcrctab, |
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NOT_GPL_ONLY, false }, |
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{ __start___ksymtab_gpl, __stop___ksymtab_gpl, |
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__start___kcrctab_gpl, GPL_ONLY, false }, |
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{ __start___ksymtab_gpl_future, __stop___ksymtab_gpl_future, |
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__start___kcrctab_gpl_future, WILL_BE_GPL_ONLY, false }, |
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#ifdef CONFIG_UNUSED_SYMBOLS |
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{ __start___ksymtab_unused, __stop___ksymtab_unused, |
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__start___kcrctab_unused, NOT_GPL_ONLY, true }, |
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{ __start___ksymtab_unused_gpl, __stop___ksymtab_unused_gpl, |
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__start___kcrctab_unused_gpl, GPL_ONLY, true }, |
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#endif |
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}; |
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|
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if (each_symbol_in_section(arr, ARRAY_SIZE(arr), NULL, fn, data)) return true; |
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|
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list_for_each_entry_rcu(mod, &modules, list) { |
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struct symsearch arr[] = { { mod->syms, mod->syms + mod->num_syms, mod->crcs, |
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NOT_GPL_ONLY, false }, |
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{ mod->gpl_syms, mod->gpl_syms + mod->num_gpl_syms, |
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mod->gpl_crcs, GPL_ONLY, false }, |
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{ mod->gpl_future_syms, mod->gpl_future_syms + mod->num_gpl_future_syms, |
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mod->gpl_future_crcs, WILL_BE_GPL_ONLY, false }, |
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#ifdef CONFIG_UNUSED_SYMBOLS |
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{ mod->unused_syms, mod->unused_syms + mod->num_unused_syms, |
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mod->unused_crcs, NOT_GPL_ONLY, true }, |
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{ mod->unused_gpl_syms, mod->unused_gpl_syms + mod->num_unused_gpl_syms, |
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mod->unused_gpl_crcs, GPL_ONLY, true }, |
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#endif |
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}; |
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if (each_symbol_in_section(arr, ARRAY_SIZE(arr), mod, fn, data)) return true; } return false; } |
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EXPORT_SYMBOL_GPL(each_symbol_section); |
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struct find_symbol_arg { /* Input */ const char *name; bool gplok; bool warn; /* Output */ struct module *owner; const unsigned long *crc; |
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const struct kernel_symbol *sym; |
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}; |
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static bool check_symbol(const struct symsearch *syms, struct module *owner, unsigned int symnum, void *data) |
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{ struct find_symbol_arg *fsa = data; |
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if (!fsa->gplok) { if (syms->licence == GPL_ONLY) return false; if (syms->licence == WILL_BE_GPL_ONLY && fsa->warn) { printk(KERN_WARNING "Symbol %s is being used " "by a non-GPL module, which will not " "be allowed in the future ", fsa->name); printk(KERN_WARNING "Please see the file " "Documentation/feature-removal-schedule.txt " "in the kernel source tree for more details. "); |
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} |
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} |
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#ifdef CONFIG_UNUSED_SYMBOLS |
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if (syms->unused && fsa->warn) { printk(KERN_WARNING "Symbol %s is marked as UNUSED, " "however this module is using it. ", fsa->name); printk(KERN_WARNING "This symbol will go away in the future. "); printk(KERN_WARNING "Please evalute if this is the right api to use and if " "it really is, submit a report the linux kernel " "mailinglist together with submitting your code for " "inclusion. "); } |
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#endif |
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fsa->owner = owner; fsa->crc = symversion(syms->crcs, symnum); |
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fsa->sym = &syms->start[symnum]; |
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return true; } |
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static int cmp_name(const void *va, const void *vb) { const char *a; const struct kernel_symbol *b; a = va; b = vb; return strcmp(a, b->name); } |
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static bool find_symbol_in_section(const struct symsearch *syms, struct module *owner, void *data) { struct find_symbol_arg *fsa = data; |
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struct kernel_symbol *sym; sym = bsearch(fsa->name, syms->start, syms->stop - syms->start, sizeof(struct kernel_symbol), cmp_name); if (sym != NULL && check_symbol(syms, owner, sym - syms->start, data)) return true; |
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|
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return false; } |
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/* Find a symbol and return it, along with, (optional) crc and |
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* (optional) module which owns it. Needs preempt disabled or module_mutex. */ |
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const struct kernel_symbol *find_symbol(const char *name, struct module **owner, const unsigned long **crc, bool gplok, bool warn) |
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{ struct find_symbol_arg fsa; fsa.name = name; fsa.gplok = gplok; fsa.warn = warn; |
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if (each_symbol_section(find_symbol_in_section, &fsa)) { |
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if (owner) *owner = fsa.owner; if (crc) *crc = fsa.crc; |
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return fsa.sym; |
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} |
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pr_debug("Failed to find symbol %s ", name); |
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return NULL; |
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} |
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EXPORT_SYMBOL_GPL(find_symbol); |
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|
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/* Search for module by name: must hold module_mutex. */ |
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struct module *find_module(const char *name) |
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{ struct module *mod; list_for_each_entry(mod, &modules, list) { if (strcmp(mod->name, name) == 0) return mod; } return NULL; } |
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EXPORT_SYMBOL_GPL(find_module); |
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#ifdef CONFIG_SMP |
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|
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static inline void __percpu *mod_percpu(struct module *mod) |
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{ |
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return mod->percpu; } |
fbf59bc9d percpu: implement... |
411 |
|
259354dea module: encapsula... |
412 413 414 |
static int percpu_modalloc(struct module *mod, unsigned long size, unsigned long align) { |
fbf59bc9d percpu: implement... |
415 416 417 |
if (align > PAGE_SIZE) { printk(KERN_WARNING "%s: per-cpu alignment %li > %li ", |
259354dea module: encapsula... |
418 |
mod->name, align, PAGE_SIZE); |
fbf59bc9d percpu: implement... |
419 420 |
align = PAGE_SIZE; } |
259354dea module: encapsula... |
421 422 |
mod->percpu = __alloc_reserved_percpu(size, align); if (!mod->percpu) { |
fbf59bc9d percpu: implement... |
423 |
printk(KERN_WARNING |
d913188c7 module: layout_an... |
424 425 426 |
"%s: Could not allocate %lu bytes percpu data ", mod->name, size); |
259354dea module: encapsula... |
427 428 429 430 |
return -ENOMEM; } mod->percpu_size = size; return 0; |
fbf59bc9d percpu: implement... |
431 |
} |
259354dea module: encapsula... |
432 |
static void percpu_modfree(struct module *mod) |
fbf59bc9d percpu: implement... |
433 |
{ |
259354dea module: encapsula... |
434 |
free_percpu(mod->percpu); |
fbf59bc9d percpu: implement... |
435 |
} |
49668688d module: pass load... |
436 |
static unsigned int find_pcpusec(struct load_info *info) |
6b588c18f module: reorder m... |
437 |
{ |
49668688d module: pass load... |
438 |
return find_sec(info, ".data..percpu"); |
6b588c18f module: reorder m... |
439 |
} |
259354dea module: encapsula... |
440 441 |
static void percpu_modcopy(struct module *mod, const void *from, unsigned long size) |
6b588c18f module: reorder m... |
442 443 444 445 |
{ int cpu; for_each_possible_cpu(cpu) |
259354dea module: encapsula... |
446 |
memcpy(per_cpu_ptr(mod->percpu, cpu), from, size); |
6b588c18f module: reorder m... |
447 |
} |
10fad5e46 percpu, module: i... |
448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 |
/** * is_module_percpu_address - test whether address is from module static percpu * @addr: address to test * * Test whether @addr belongs to module static percpu area. * * RETURNS: * %true if @addr is from module static percpu area */ bool is_module_percpu_address(unsigned long addr) { struct module *mod; unsigned int cpu; preempt_disable(); list_for_each_entry_rcu(mod, &modules, list) { if (!mod->percpu_size) continue; for_each_possible_cpu(cpu) { void *start = per_cpu_ptr(mod->percpu, cpu); if ((void *)addr >= start && (void *)addr < start + mod->percpu_size) { preempt_enable(); return true; } } } preempt_enable(); return false; |
6b588c18f module: reorder m... |
480 |
} |
1da177e4c Linux-2.6.12-rc2 |
481 |
#else /* ... !CONFIG_SMP */ |
6b588c18f module: reorder m... |
482 |
|
259354dea module: encapsula... |
483 |
static inline void __percpu *mod_percpu(struct module *mod) |
1da177e4c Linux-2.6.12-rc2 |
484 485 486 |
{ return NULL; } |
259354dea module: encapsula... |
487 488 489 490 491 492 |
static inline int percpu_modalloc(struct module *mod, unsigned long size, unsigned long align) { return -ENOMEM; } static inline void percpu_modfree(struct module *mod) |
1da177e4c Linux-2.6.12-rc2 |
493 |
{ |
1da177e4c Linux-2.6.12-rc2 |
494 |
} |
49668688d module: pass load... |
495 |
static unsigned int find_pcpusec(struct load_info *info) |
1da177e4c Linux-2.6.12-rc2 |
496 497 498 |
{ return 0; } |
259354dea module: encapsula... |
499 500 |
static inline void percpu_modcopy(struct module *mod, const void *from, unsigned long size) |
1da177e4c Linux-2.6.12-rc2 |
501 502 503 504 |
{ /* pcpusec should be 0, and size of that section should be 0. */ BUG_ON(size != 0); } |
10fad5e46 percpu, module: i... |
505 506 507 508 |
bool is_module_percpu_address(unsigned long addr) { return false; } |
6b588c18f module: reorder m... |
509 |
|
1da177e4c Linux-2.6.12-rc2 |
510 |
#endif /* CONFIG_SMP */ |
c988d2b28 [PATCH] modules: ... |
511 512 513 514 515 516 |
#define MODINFO_ATTR(field) \ static void setup_modinfo_##field(struct module *mod, const char *s) \ { \ mod->field = kstrdup(s, GFP_KERNEL); \ } \ static ssize_t show_modinfo_##field(struct module_attribute *mattr, \ |
4befb026c module: change at... |
517 |
struct module_kobject *mk, char *buffer) \ |
c988d2b28 [PATCH] modules: ... |
518 |
{ \ |
4befb026c module: change at... |
519 520 |
return sprintf(buffer, "%s ", mk->mod->field); \ |
c988d2b28 [PATCH] modules: ... |
521 522 523 524 525 526 527 |
} \ static int modinfo_##field##_exists(struct module *mod) \ { \ return mod->field != NULL; \ } \ static void free_modinfo_##field(struct module *mod) \ { \ |
22a8bdeb5 whitespace fixes:... |
528 529 |
kfree(mod->field); \ mod->field = NULL; \ |
c988d2b28 [PATCH] modules: ... |
530 531 |
} \ static struct module_attribute modinfo_##field = { \ |
7b595756e sysfs: kill unnec... |
532 |
.attr = { .name = __stringify(field), .mode = 0444 }, \ |
c988d2b28 [PATCH] modules: ... |
533 534 535 536 537 538 539 540 |
.show = show_modinfo_##field, \ .setup = setup_modinfo_##field, \ .test = modinfo_##field##_exists, \ .free = free_modinfo_##field, \ }; MODINFO_ATTR(version); MODINFO_ATTR(srcversion); |
e14af7eeb debug: track and ... |
541 |
static char last_unloaded_module[MODULE_NAME_LEN+1]; |
03e88ae1b [PATCH] fix modul... |
542 |
#ifdef CONFIG_MODULE_UNLOAD |
eb0c53771 tracing: Fix comp... |
543 544 |
EXPORT_TRACEPOINT_SYMBOL(module_get); |
1da177e4c Linux-2.6.12-rc2 |
545 |
/* Init the unload section of the module. */ |
9f85a4bbb module: refactor ... |
546 |
static int module_unload_init(struct module *mod) |
1da177e4c Linux-2.6.12-rc2 |
547 |
{ |
9f85a4bbb module: refactor ... |
548 549 550 |
mod->refptr = alloc_percpu(struct module_ref); if (!mod->refptr) return -ENOMEM; |
2c02dfe7f module: Make the ... |
551 552 |
INIT_LIST_HEAD(&mod->source_list); INIT_LIST_HEAD(&mod->target_list); |
e1783a240 module: Use this_... |
553 |
|
1da177e4c Linux-2.6.12-rc2 |
554 |
/* Hold reference count during initialization. */ |
5fbfb18d7 Fix up possibly r... |
555 |
__this_cpu_write(mod->refptr->incs, 1); |
1da177e4c Linux-2.6.12-rc2 |
556 557 |
/* Backwards compatibility macros put refcount during init. */ mod->waiter = current; |
9f85a4bbb module: refactor ... |
558 559 |
return 0; |
1da177e4c Linux-2.6.12-rc2 |
560 |
} |
1da177e4c Linux-2.6.12-rc2 |
561 562 563 564 |
/* Does a already use b? */ static int already_uses(struct module *a, struct module *b) { struct module_use *use; |
2c02dfe7f module: Make the ... |
565 566 |
list_for_each_entry(use, &b->source_list, source_list) { if (use->source == a) { |
5e1241692 module: replace D... |
567 568 |
pr_debug("%s uses %s! ", a->name, b->name); |
1da177e4c Linux-2.6.12-rc2 |
569 570 571 |
return 1; } } |
5e1241692 module: replace D... |
572 573 |
pr_debug("%s does not use %s! ", a->name, b->name); |
1da177e4c Linux-2.6.12-rc2 |
574 575 |
return 0; } |
2c02dfe7f module: Make the ... |
576 577 578 579 580 581 582 583 584 |
/* * Module a uses b * - we add 'a' as a "source", 'b' as a "target" of module use * - the module_use is added to the list of 'b' sources (so * 'b' can walk the list to see who sourced them), and of 'a' * targets (so 'a' can see what modules it targets). */ static int add_module_usage(struct module *a, struct module *b) { |
2c02dfe7f module: Make the ... |
585 |
struct module_use *use; |
5e1241692 module: replace D... |
586 587 |
pr_debug("Allocating new usage for %s. ", a->name); |
2c02dfe7f module: Make the ... |
588 589 590 591 592 593 594 595 596 597 598 |
use = kmalloc(sizeof(*use), GFP_ATOMIC); if (!use) { printk(KERN_WARNING "%s: out of memory loading ", a->name); return -ENOMEM; } use->source = a; use->target = b; list_add(&use->source_list, &b->source_list); list_add(&use->target_list, &a->target_list); |
2c02dfe7f module: Make the ... |
599 600 |
return 0; } |
75676500f module: make lock... |
601 |
/* Module a uses b: caller needs module_mutex() */ |
9bea7f239 module: fix bne2 ... |
602 |
int ref_module(struct module *a, struct module *b) |
1da177e4c Linux-2.6.12-rc2 |
603 |
{ |
c8e21ced0 module: fix kdb's... |
604 |
int err; |
270a6c4ca /sys/modules/*/ho... |
605 |
|
9bea7f239 module: fix bne2 ... |
606 |
if (b == NULL || already_uses(a, b)) |
218ce7351 Revert "module: d... |
607 |
return 0; |
218ce7351 Revert "module: d... |
608 |
|
9bea7f239 module: fix bne2 ... |
609 610 |
/* If module isn't available, we fail. */ err = strong_try_module_get(b); |
c9a3ba55b module: wait for ... |
611 |
if (err) |
9bea7f239 module: fix bne2 ... |
612 |
return err; |
1da177e4c Linux-2.6.12-rc2 |
613 |
|
2c02dfe7f module: Make the ... |
614 615 |
err = add_module_usage(a, b); if (err) { |
1da177e4c Linux-2.6.12-rc2 |
616 |
module_put(b); |
9bea7f239 module: fix bne2 ... |
617 |
return err; |
1da177e4c Linux-2.6.12-rc2 |
618 |
} |
9bea7f239 module: fix bne2 ... |
619 |
return 0; |
1da177e4c Linux-2.6.12-rc2 |
620 |
} |
9bea7f239 module: fix bne2 ... |
621 |
EXPORT_SYMBOL_GPL(ref_module); |
1da177e4c Linux-2.6.12-rc2 |
622 623 624 625 |
/* Clear the unload stuff of the module. */ static void module_unload_free(struct module *mod) { |
2c02dfe7f module: Make the ... |
626 |
struct module_use *use, *tmp; |
1da177e4c Linux-2.6.12-rc2 |
627 |
|
75676500f module: make lock... |
628 |
mutex_lock(&module_mutex); |
2c02dfe7f module: Make the ... |
629 630 |
list_for_each_entry_safe(use, tmp, &mod->target_list, target_list) { struct module *i = use->target; |
5e1241692 module: replace D... |
631 632 |
pr_debug("%s unusing %s ", mod->name, i->name); |
2c02dfe7f module: Make the ... |
633 634 635 636 |
module_put(i); list_del(&use->source_list); list_del(&use->target_list); kfree(use); |
1da177e4c Linux-2.6.12-rc2 |
637 |
} |
75676500f module: make lock... |
638 |
mutex_unlock(&module_mutex); |
9f85a4bbb module: refactor ... |
639 640 |
free_percpu(mod->refptr); |
1da177e4c Linux-2.6.12-rc2 |
641 642 643 |
} #ifdef CONFIG_MODULE_FORCE_UNLOAD |
fb1697933 [PATCH] modules: ... |
644 |
static inline int try_force_unload(unsigned int flags) |
1da177e4c Linux-2.6.12-rc2 |
645 646 647 |
{ int ret = (flags & O_TRUNC); if (ret) |
fb1697933 [PATCH] modules: ... |
648 |
add_taint(TAINT_FORCED_RMMOD); |
1da177e4c Linux-2.6.12-rc2 |
649 650 651 |
return ret; } #else |
fb1697933 [PATCH] modules: ... |
652 |
static inline int try_force_unload(unsigned int flags) |
1da177e4c Linux-2.6.12-rc2 |
653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 |
{ return 0; } #endif /* CONFIG_MODULE_FORCE_UNLOAD */ struct stopref { struct module *mod; int flags; int *forced; }; /* Whole machine is stopped with interrupts off when this runs. */ static int __try_stop_module(void *_sref) { struct stopref *sref = _sref; |
da39ba5e1 module: don't use... |
669 670 |
/* If it's not unused, quit unless we're forcing. */ if (module_refcount(sref->mod) != 0) { |
fb1697933 [PATCH] modules: ... |
671 |
if (!(*sref->forced = try_force_unload(sref->flags))) |
1da177e4c Linux-2.6.12-rc2 |
672 673 674 675 676 677 678 679 680 681 |
return -EWOULDBLOCK; } /* Mark it as dying. */ sref->mod->state = MODULE_STATE_GOING; return 0; } static int try_stop_module(struct module *mod, int flags, int *forced) { |
da39ba5e1 module: don't use... |
682 683 |
if (flags & O_NONBLOCK) { struct stopref sref = { mod, flags, forced }; |
1da177e4c Linux-2.6.12-rc2 |
684 |
|
9b1a4d383 stop_machine: Wea... |
685 |
return stop_machine(__try_stop_module, &sref, NULL); |
da39ba5e1 module: don't use... |
686 687 688 689 690 691 |
} else { /* We don't need to stop the machine for this. */ mod->state = MODULE_STATE_GOING; synchronize_sched(); return 0; } |
1da177e4c Linux-2.6.12-rc2 |
692 |
} |
bd77c0477 module: struct mo... |
693 |
unsigned long module_refcount(struct module *mod) |
1da177e4c Linux-2.6.12-rc2 |
694 |
{ |
bd77c0477 module: struct mo... |
695 |
unsigned long incs = 0, decs = 0; |
720eba31f modules: Use a be... |
696 |
int cpu; |
1da177e4c Linux-2.6.12-rc2 |
697 |
|
720eba31f modules: Use a be... |
698 |
for_each_possible_cpu(cpu) |
5fbfb18d7 Fix up possibly r... |
699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 |
decs += per_cpu_ptr(mod->refptr, cpu)->decs; /* * ensure the incs are added up after the decs. * module_put ensures incs are visible before decs with smp_wmb. * * This 2-count scheme avoids the situation where the refcount * for CPU0 is read, then CPU0 increments the module refcount, * then CPU1 drops that refcount, then the refcount for CPU1 is * read. We would record a decrement but not its corresponding * increment so we would see a low count (disaster). * * Rare situation? But module_refcount can be preempted, and we * might be tallying up 4096+ CPUs. So it is not impossible. */ smp_rmb(); for_each_possible_cpu(cpu) incs += per_cpu_ptr(mod->refptr, cpu)->incs; return incs - decs; |
1da177e4c Linux-2.6.12-rc2 |
717 718 719 720 721 722 723 724 |
} EXPORT_SYMBOL(module_refcount); /* This exists whether we can unload or not */ static void free_module(struct module *mod); static void wait_for_zero_refcount(struct module *mod) { |
a65502075 kernel: Remove un... |
725 |
/* Since we might sleep for some time, release the mutex first */ |
6389a3851 [PATCH] kernel/mo... |
726 |
mutex_unlock(&module_mutex); |
1da177e4c Linux-2.6.12-rc2 |
727 |
for (;;) { |
5e1241692 module: replace D... |
728 729 |
pr_debug("Looking at refcount... "); |
1da177e4c Linux-2.6.12-rc2 |
730 731 732 733 734 735 |
set_current_state(TASK_UNINTERRUPTIBLE); if (module_refcount(mod) == 0) break; schedule(); } current->state = TASK_RUNNING; |
6389a3851 [PATCH] kernel/mo... |
736 |
mutex_lock(&module_mutex); |
1da177e4c Linux-2.6.12-rc2 |
737 |
} |
17da2bd90 [CVE-2009-0029] S... |
738 739 |
SYSCALL_DEFINE2(delete_module, const char __user *, name_user, unsigned int, flags) |
1da177e4c Linux-2.6.12-rc2 |
740 741 |
{ struct module *mod; |
dfff0a067 Revert "Driver co... |
742 |
char name[MODULE_NAME_LEN]; |
1da177e4c Linux-2.6.12-rc2 |
743 |
int ret, forced = 0; |
3d43321b7 modules: sysctl t... |
744 |
if (!capable(CAP_SYS_MODULE) || modules_disabled) |
dfff0a067 Revert "Driver co... |
745 746 747 748 749 |
return -EPERM; if (strncpy_from_user(name, name_user, MODULE_NAME_LEN-1) < 0) return -EFAULT; name[MODULE_NAME_LEN-1] = '\0'; |
3fc1f1e27 stop_machine: rei... |
750 751 |
if (mutex_lock_interruptible(&module_mutex) != 0) return -EINTR; |
1da177e4c Linux-2.6.12-rc2 |
752 753 754 755 756 757 |
mod = find_module(name); if (!mod) { ret = -ENOENT; goto out; } |
2c02dfe7f module: Make the ... |
758 |
if (!list_empty(&mod->source_list)) { |
1da177e4c Linux-2.6.12-rc2 |
759 760 761 762 763 764 765 766 767 |
/* Other modules depend on us: get rid of them first. */ ret = -EWOULDBLOCK; goto out; } /* Doing init or already dying? */ if (mod->state != MODULE_STATE_LIVE) { /* FIXME: if (force), slam module count and wake up waiter --RR */ |
5e1241692 module: replace D... |
768 769 |
pr_debug("%s already dying ", mod->name); |
1da177e4c Linux-2.6.12-rc2 |
770 771 772 773 774 |
ret = -EBUSY; goto out; } /* If it has an init func, it must have an exit func to unload */ |
af49d9248 Remove "unsafe" f... |
775 |
if (mod->init && !mod->exit) { |
fb1697933 [PATCH] modules: ... |
776 |
forced = try_force_unload(flags); |
1da177e4c Linux-2.6.12-rc2 |
777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 |
if (!forced) { /* This module can't be removed */ ret = -EBUSY; goto out; } } /* Set this up before setting mod->state */ mod->waiter = current; /* Stop the machine so refcounts can't move and disable module. */ ret = try_stop_module(mod, flags, &forced); if (ret != 0) goto out; /* Never wait if forced. */ if (!forced && module_refcount(mod) != 0) wait_for_zero_refcount(mod); |
df4b565e1 module: add MODUL... |
795 |
mutex_unlock(&module_mutex); |
25985edce Fix common misspe... |
796 |
/* Final destruction now no one is using it. */ |
df4b565e1 module: add MODUL... |
797 |
if (mod->exit != NULL) |
1da177e4c Linux-2.6.12-rc2 |
798 |
mod->exit(); |
df4b565e1 module: add MODUL... |
799 800 |
blocking_notifier_call_chain(&module_notify_list, MODULE_STATE_GOING, mod); |
22a9d6456 async: Asynchrono... |
801 |
async_synchronize_full(); |
75676500f module: make lock... |
802 |
|
e14af7eeb debug: track and ... |
803 |
/* Store the name of the last unloaded module for diagnostic purposes */ |
efa5345e3 module: Fix gratu... |
804 |
strlcpy(last_unloaded_module, mod->name, sizeof(last_unloaded_module)); |
1da177e4c Linux-2.6.12-rc2 |
805 |
|
75676500f module: make lock... |
806 807 808 |
free_module(mod); return 0; out: |
6389a3851 [PATCH] kernel/mo... |
809 |
mutex_unlock(&module_mutex); |
1da177e4c Linux-2.6.12-rc2 |
810 811 |
return ret; } |
d1e99d7ae module: fix warni... |
812 |
static inline void print_unload_info(struct seq_file *m, struct module *mod) |
1da177e4c Linux-2.6.12-rc2 |
813 814 815 |
{ struct module_use *use; int printed_something = 0; |
bd77c0477 module: struct mo... |
816 |
seq_printf(m, " %lu ", module_refcount(mod)); |
1da177e4c Linux-2.6.12-rc2 |
817 818 819 |
/* Always include a trailing , so userspace can differentiate between this and the old multi-field proc format. */ |
2c02dfe7f module: Make the ... |
820 |
list_for_each_entry(use, &mod->source_list, source_list) { |
1da177e4c Linux-2.6.12-rc2 |
821 |
printed_something = 1; |
2c02dfe7f module: Make the ... |
822 |
seq_printf(m, "%s,", use->source->name); |
1da177e4c Linux-2.6.12-rc2 |
823 |
} |
1da177e4c Linux-2.6.12-rc2 |
824 825 826 827 828 829 830 831 832 833 834 835 |
if (mod->init != NULL && mod->exit == NULL) { printed_something = 1; seq_printf(m, "[permanent],"); } if (!printed_something) seq_printf(m, "-"); } void __symbol_put(const char *symbol) { struct module *owner; |
1da177e4c Linux-2.6.12-rc2 |
836 |
|
24da1cbff modules: remove m... |
837 |
preempt_disable(); |
414fd31b2 module: Make find... |
838 |
if (!find_symbol(symbol, &owner, NULL, true, false)) |
1da177e4c Linux-2.6.12-rc2 |
839 840 |
BUG(); module_put(owner); |
24da1cbff modules: remove m... |
841 |
preempt_enable(); |
1da177e4c Linux-2.6.12-rc2 |
842 843 |
} EXPORT_SYMBOL(__symbol_put); |
7d1d16e41 module: fix BUG_O... |
844 |
/* Note this assumes addr is a function, which it currently always is. */ |
1da177e4c Linux-2.6.12-rc2 |
845 846 |
void symbol_put_addr(void *addr) { |
5e3766138 [PATCH] symbol_pu... |
847 |
struct module *modaddr; |
7d1d16e41 module: fix BUG_O... |
848 |
unsigned long a = (unsigned long)dereference_function_descriptor(addr); |
1da177e4c Linux-2.6.12-rc2 |
849 |
|
7d1d16e41 module: fix BUG_O... |
850 |
if (core_kernel_text(a)) |
5e3766138 [PATCH] symbol_pu... |
851 |
return; |
1da177e4c Linux-2.6.12-rc2 |
852 |
|
a6e6abd57 module: remove mo... |
853 854 |
/* module_text_address is safe here: we're supposed to have reference * to module from symbol_get, so it can't go away. */ |
7d1d16e41 module: fix BUG_O... |
855 |
modaddr = __module_text_address(a); |
a6e6abd57 module: remove mo... |
856 |
BUG_ON(!modaddr); |
5e3766138 [PATCH] symbol_pu... |
857 |
module_put(modaddr); |
1da177e4c Linux-2.6.12-rc2 |
858 859 860 861 |
} EXPORT_SYMBOL_GPL(symbol_put_addr); static ssize_t show_refcnt(struct module_attribute *mattr, |
4befb026c module: change at... |
862 |
struct module_kobject *mk, char *buffer) |
1da177e4c Linux-2.6.12-rc2 |
863 |
{ |
bd77c0477 module: struct mo... |
864 865 |
return sprintf(buffer, "%lu ", module_refcount(mk->mod)); |
1da177e4c Linux-2.6.12-rc2 |
866 |
} |
cca3e7073 modules: sysfs - ... |
867 868 |
static struct module_attribute modinfo_refcnt = __ATTR(refcnt, 0444, show_refcnt, NULL); |
1da177e4c Linux-2.6.12-rc2 |
869 |
|
f6a570333 [PATCH] severing ... |
870 871 872 |
void module_put(struct module *module) { if (module) { |
e1783a240 module: Use this_... |
873 |
preempt_disable(); |
5fbfb18d7 Fix up possibly r... |
874 875 |
smp_wmb(); /* see comment in module_refcount */ __this_cpu_inc(module->refptr->decs); |
e1783a240 module: Use this_... |
876 |
|
ae832d1e0 tracing: Remove s... |
877 |
trace_module_put(module, _RET_IP_); |
f6a570333 [PATCH] severing ... |
878 879 880 |
/* Maybe they're waiting for us to drop reference? */ if (unlikely(!module_is_live(module))) wake_up_process(module->waiter); |
e1783a240 module: Use this_... |
881 |
preempt_enable(); |
f6a570333 [PATCH] severing ... |
882 883 884 |
} } EXPORT_SYMBOL(module_put); |
1da177e4c Linux-2.6.12-rc2 |
885 |
#else /* !CONFIG_MODULE_UNLOAD */ |
d1e99d7ae module: fix warni... |
886 |
static inline void print_unload_info(struct seq_file *m, struct module *mod) |
1da177e4c Linux-2.6.12-rc2 |
887 888 889 890 891 892 893 894 |
{ /* We don't know the usage count, or what modules are using. */ seq_printf(m, " - -"); } static inline void module_unload_free(struct module *mod) { } |
9bea7f239 module: fix bne2 ... |
895 |
int ref_module(struct module *a, struct module *b) |
1da177e4c Linux-2.6.12-rc2 |
896 |
{ |
9bea7f239 module: fix bne2 ... |
897 |
return strong_try_module_get(b); |
1da177e4c Linux-2.6.12-rc2 |
898 |
} |
9bea7f239 module: fix bne2 ... |
899 |
EXPORT_SYMBOL_GPL(ref_module); |
1da177e4c Linux-2.6.12-rc2 |
900 |
|
9f85a4bbb module: refactor ... |
901 |
static inline int module_unload_init(struct module *mod) |
1da177e4c Linux-2.6.12-rc2 |
902 |
{ |
9f85a4bbb module: refactor ... |
903 |
return 0; |
1da177e4c Linux-2.6.12-rc2 |
904 905 |
} #endif /* CONFIG_MODULE_UNLOAD */ |
53999bf34 error: implicit d... |
906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 |
static size_t module_flags_taint(struct module *mod, char *buf) { size_t l = 0; if (mod->taints & (1 << TAINT_PROPRIETARY_MODULE)) buf[l++] = 'P'; if (mod->taints & (1 << TAINT_OOT_MODULE)) buf[l++] = 'O'; if (mod->taints & (1 << TAINT_FORCED_MODULE)) buf[l++] = 'F'; if (mod->taints & (1 << TAINT_CRAP)) buf[l++] = 'C'; /* * TAINT_FORCED_RMMOD: could be added. * TAINT_UNSAFE_SMP, TAINT_MACHINE_CHECK, TAINT_BAD_PAGE don't * apply to modules. */ return l; } |
1f71740ab Driver core: show... |
925 |
static ssize_t show_initstate(struct module_attribute *mattr, |
4befb026c module: change at... |
926 |
struct module_kobject *mk, char *buffer) |
1f71740ab Driver core: show... |
927 928 |
{ const char *state = "unknown"; |
4befb026c module: change at... |
929 |
switch (mk->mod->state) { |
1f71740ab Driver core: show... |
930 931 932 933 934 935 936 937 938 939 940 941 942 |
case MODULE_STATE_LIVE: state = "live"; break; case MODULE_STATE_COMING: state = "coming"; break; case MODULE_STATE_GOING: state = "going"; break; } return sprintf(buffer, "%s ", state); } |
cca3e7073 modules: sysfs - ... |
943 944 |
static struct module_attribute modinfo_initstate = __ATTR(initstate, 0444, show_initstate, NULL); |
1f71740ab Driver core: show... |
945 |
|
88bfa3247 module: add /sys/... |
946 947 948 949 950 951 952 953 954 955 |
static ssize_t store_uevent(struct module_attribute *mattr, struct module_kobject *mk, const char *buffer, size_t count) { enum kobject_action action; if (kobject_action_type(buffer, count, &action) == 0) kobject_uevent(&mk->kobj, action); return count; } |
cca3e7073 modules: sysfs - ... |
956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 |
struct module_attribute module_uevent = __ATTR(uevent, 0200, NULL, store_uevent); static ssize_t show_coresize(struct module_attribute *mattr, struct module_kobject *mk, char *buffer) { return sprintf(buffer, "%u ", mk->mod->core_size); } static struct module_attribute modinfo_coresize = __ATTR(coresize, 0444, show_coresize, NULL); static ssize_t show_initsize(struct module_attribute *mattr, struct module_kobject *mk, char *buffer) { return sprintf(buffer, "%u ", mk->mod->init_size); } static struct module_attribute modinfo_initsize = __ATTR(initsize, 0444, show_initsize, NULL); static ssize_t show_taint(struct module_attribute *mattr, struct module_kobject *mk, char *buffer) { size_t l; l = module_flags_taint(mk->mod, buffer); buffer[l++] = ' '; return l; } static struct module_attribute modinfo_taint = __ATTR(taint, 0444, show_taint, NULL); |
88bfa3247 module: add /sys/... |
992 |
|
03e88ae1b [PATCH] fix modul... |
993 |
static struct module_attribute *modinfo_attrs[] = { |
cca3e7073 modules: sysfs - ... |
994 |
&module_uevent, |
03e88ae1b [PATCH] fix modul... |
995 996 |
&modinfo_version, &modinfo_srcversion, |
cca3e7073 modules: sysfs - ... |
997 998 999 1000 |
&modinfo_initstate, &modinfo_coresize, &modinfo_initsize, &modinfo_taint, |
03e88ae1b [PATCH] fix modul... |
1001 |
#ifdef CONFIG_MODULE_UNLOAD |
cca3e7073 modules: sysfs - ... |
1002 |
&modinfo_refcnt, |
03e88ae1b [PATCH] fix modul... |
1003 1004 1005 |
#endif NULL, }; |
1da177e4c Linux-2.6.12-rc2 |
1006 |
static const char vermagic[] = VERMAGIC_STRING; |
c6e665c8f module: clarify t... |
1007 |
static int try_to_force_load(struct module *mod, const char *reason) |
826e4506a Make forced modul... |
1008 1009 |
{ #ifdef CONFIG_MODULE_FORCE_LOAD |
25ddbb18a Make the taint fl... |
1010 |
if (!test_taint(TAINT_FORCED_MODULE)) |
c6e665c8f module: clarify t... |
1011 1012 1013 |
printk(KERN_WARNING "%s: %s: kernel tainted. ", mod->name, reason); |
826e4506a Make forced modul... |
1014 1015 1016 1017 1018 1019 |
add_taint_module(mod, TAINT_FORCED_MODULE); return 0; #else return -ENOEXEC; #endif } |
1da177e4c Linux-2.6.12-rc2 |
1020 |
#ifdef CONFIG_MODVERSIONS |
d4703aefd module: handle pp... |
1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 |
/* If the arch applies (non-zero) relocations to kernel kcrctab, unapply it. */ static unsigned long maybe_relocated(unsigned long crc, const struct module *crc_owner) { #ifdef ARCH_RELOCATES_KCRCTAB if (crc_owner == NULL) return crc - (unsigned long)reloc_start; #endif return crc; } |
1da177e4c Linux-2.6.12-rc2 |
1031 1032 1033 1034 |
static int check_version(Elf_Shdr *sechdrs, unsigned int versindex, const char *symname, struct module *mod, |
d4703aefd module: handle pp... |
1035 1036 |
const unsigned long *crc, const struct module *crc_owner) |
1da177e4c Linux-2.6.12-rc2 |
1037 1038 1039 1040 1041 1042 1043 |
{ unsigned int i, num_versions; struct modversion_info *versions; /* Exporting module didn't supply crcs? OK, we're already tainted. */ if (!crc) return 1; |
a5dd69707 module: be more p... |
1044 1045 1046 |
/* No versions at all? modprobe --force does this. */ if (versindex == 0) return try_to_force_load(mod, symname) == 0; |
1da177e4c Linux-2.6.12-rc2 |
1047 1048 1049 1050 1051 1052 1053 |
versions = (void *) sechdrs[versindex].sh_addr; num_versions = sechdrs[versindex].sh_size / sizeof(struct modversion_info); for (i = 0; i < num_versions; i++) { if (strcmp(versions[i].name, symname) != 0) continue; |
d4703aefd module: handle pp... |
1054 |
if (versions[i].crc == maybe_relocated(*crc, crc_owner)) |
1da177e4c Linux-2.6.12-rc2 |
1055 |
return 1; |
5e1241692 module: replace D... |
1056 1057 |
pr_debug("Found checksum %lX vs module %lX ", |
d4703aefd module: handle pp... |
1058 |
maybe_relocated(*crc, crc_owner), versions[i].crc); |
826e4506a Make forced modul... |
1059 |
goto bad_version; |
1da177e4c Linux-2.6.12-rc2 |
1060 |
} |
826e4506a Make forced modul... |
1061 |
|
a5dd69707 module: be more p... |
1062 1063 1064 1065 |
printk(KERN_WARNING "%s: no symbol version for %s ", mod->name, symname); return 0; |
826e4506a Make forced modul... |
1066 1067 1068 1069 1070 1071 |
bad_version: printk("%s: disagrees about version of symbol %s ", mod->name, symname); return 0; |
1da177e4c Linux-2.6.12-rc2 |
1072 1073 1074 1075 1076 1077 1078 |
} static inline int check_modstruct_version(Elf_Shdr *sechdrs, unsigned int versindex, struct module *mod) { const unsigned long *crc; |
1da177e4c Linux-2.6.12-rc2 |
1079 |
|
75676500f module: make lock... |
1080 1081 |
/* Since this should be found in kernel (which can't be removed), * no locking is necessary. */ |
6560dc160 module: use MODUL... |
1082 1083 |
if (!find_symbol(MODULE_SYMBOL_PREFIX "module_layout", NULL, &crc, true, false)) |
1da177e4c Linux-2.6.12-rc2 |
1084 |
BUG(); |
d4703aefd module: handle pp... |
1085 1086 |
return check_version(sechdrs, versindex, "module_layout", mod, crc, NULL); |
1da177e4c Linux-2.6.12-rc2 |
1087 |
} |
91e37a793 module: don't ign... |
1088 1089 1090 |
/* First part is kernel version, which we ignore if module has crcs. */ static inline int same_magic(const char *amagic, const char *bmagic, bool has_crcs) |
1da177e4c Linux-2.6.12-rc2 |
1091 |
{ |
91e37a793 module: don't ign... |
1092 1093 1094 1095 |
if (has_crcs) { amagic += strcspn(amagic, " "); bmagic += strcspn(bmagic, " "); } |
1da177e4c Linux-2.6.12-rc2 |
1096 1097 1098 1099 1100 1101 1102 |
return strcmp(amagic, bmagic) == 0; } #else static inline int check_version(Elf_Shdr *sechdrs, unsigned int versindex, const char *symname, struct module *mod, |
d4703aefd module: handle pp... |
1103 1104 |
const unsigned long *crc, const struct module *crc_owner) |
1da177e4c Linux-2.6.12-rc2 |
1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 |
{ return 1; } static inline int check_modstruct_version(Elf_Shdr *sechdrs, unsigned int versindex, struct module *mod) { return 1; } |
91e37a793 module: don't ign... |
1115 1116 |
static inline int same_magic(const char *amagic, const char *bmagic, bool has_crcs) |
1da177e4c Linux-2.6.12-rc2 |
1117 1118 1119 1120 |
{ return strcmp(amagic, bmagic) == 0; } #endif /* CONFIG_MODVERSIONS */ |
75676500f module: make lock... |
1121 |
/* Resolve a symbol for this module. I.e. if we find one, record usage. */ |
49668688d module: pass load... |
1122 1123 |
static const struct kernel_symbol *resolve_symbol(struct module *mod, const struct load_info *info, |
414fd31b2 module: Make find... |
1124 |
const char *name, |
9bea7f239 module: fix bne2 ... |
1125 |
char ownername[]) |
1da177e4c Linux-2.6.12-rc2 |
1126 1127 |
{ struct module *owner; |
414fd31b2 module: Make find... |
1128 |
const struct kernel_symbol *sym; |
1da177e4c Linux-2.6.12-rc2 |
1129 |
const unsigned long *crc; |
9bea7f239 module: fix bne2 ... |
1130 |
int err; |
1da177e4c Linux-2.6.12-rc2 |
1131 |
|
75676500f module: make lock... |
1132 |
mutex_lock(&module_mutex); |
414fd31b2 module: Make find... |
1133 |
sym = find_symbol(name, &owner, &crc, |
25ddbb18a Make the taint fl... |
1134 |
!(mod->taints & (1 << TAINT_PROPRIETARY_MODULE)), true); |
9bea7f239 module: fix bne2 ... |
1135 1136 |
if (!sym) goto unlock; |
49668688d module: pass load... |
1137 1138 |
if (!check_version(info->sechdrs, info->index.vers, name, mod, crc, owner)) { |
9bea7f239 module: fix bne2 ... |
1139 1140 |
sym = ERR_PTR(-EINVAL); goto getname; |
1da177e4c Linux-2.6.12-rc2 |
1141 |
} |
9bea7f239 module: fix bne2 ... |
1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 |
err = ref_module(mod, owner); if (err) { sym = ERR_PTR(err); goto getname; } getname: /* We must make copy under the lock if we failed to get ref. */ strncpy(ownername, module_name(owner), MODULE_NAME_LEN); unlock: |
75676500f module: make lock... |
1153 |
mutex_unlock(&module_mutex); |
218ce7351 Revert "module: d... |
1154 |
return sym; |
1da177e4c Linux-2.6.12-rc2 |
1155 |
} |
49668688d module: pass load... |
1156 1157 1158 1159 |
static const struct kernel_symbol * resolve_symbol_wait(struct module *mod, const struct load_info *info, const char *name) |
9bea7f239 module: fix bne2 ... |
1160 1161 |
{ const struct kernel_symbol *ksym; |
49668688d module: pass load... |
1162 |
char owner[MODULE_NAME_LEN]; |
9bea7f239 module: fix bne2 ... |
1163 1164 |
if (wait_event_interruptible_timeout(module_wq, |
49668688d module: pass load... |
1165 1166 |
!IS_ERR(ksym = resolve_symbol(mod, info, name, owner)) || PTR_ERR(ksym) != -EBUSY, |
9bea7f239 module: fix bne2 ... |
1167 1168 1169 |
30 * HZ) <= 0) { printk(KERN_WARNING "%s: gave up waiting for init of module %s. ", |
49668688d module: pass load... |
1170 |
mod->name, owner); |
9bea7f239 module: fix bne2 ... |
1171 1172 1173 |
} return ksym; } |
1da177e4c Linux-2.6.12-rc2 |
1174 1175 1176 1177 |
/* * /sys/module/foo/sections stuff * J. Corbet <corbet@lwn.net> */ |
8f6d03781 module: sysfs cle... |
1178 |
#ifdef CONFIG_SYSFS |
10b465aaf modules: Skip emp... |
1179 |
|
8f6d03781 module: sysfs cle... |
1180 |
#ifdef CONFIG_KALLSYMS |
10b465aaf modules: Skip emp... |
1181 1182 1183 1184 |
static inline bool sect_empty(const Elf_Shdr *sect) { return !(sect->sh_flags & SHF_ALLOC) || sect->sh_size == 0; } |
a58730c42 module: make modu... |
1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 |
struct module_sect_attr { struct module_attribute mattr; char *name; unsigned long address; }; struct module_sect_attrs { struct attribute_group grp; unsigned int nsections; struct module_sect_attr attrs[0]; }; |
1da177e4c Linux-2.6.12-rc2 |
1198 |
static ssize_t module_sect_show(struct module_attribute *mattr, |
4befb026c module: change at... |
1199 |
struct module_kobject *mk, char *buf) |
1da177e4c Linux-2.6.12-rc2 |
1200 1201 1202 |
{ struct module_sect_attr *sattr = container_of(mattr, struct module_sect_attr, mattr); |
9f36e2c44 printk: use %pK f... |
1203 1204 |
return sprintf(buf, "0x%pK ", (void *)sattr->address); |
1da177e4c Linux-2.6.12-rc2 |
1205 |
} |
04b1db9fd [PATCH] /sys/modu... |
1206 1207 |
static void free_sect_attrs(struct module_sect_attrs *sect_attrs) { |
a58730c42 module: make modu... |
1208 |
unsigned int section; |
04b1db9fd [PATCH] /sys/modu... |
1209 1210 1211 1212 1213 |
for (section = 0; section < sect_attrs->nsections; section++) kfree(sect_attrs->attrs[section].name); kfree(sect_attrs); } |
8f6d03781 module: sysfs cle... |
1214 |
static void add_sect_attrs(struct module *mod, const struct load_info *info) |
1da177e4c Linux-2.6.12-rc2 |
1215 1216 1217 1218 1219 |
{ unsigned int nloaded = 0, i, size[2]; struct module_sect_attrs *sect_attrs; struct module_sect_attr *sattr; struct attribute **gattr; |
22a8bdeb5 whitespace fixes:... |
1220 |
|
1da177e4c Linux-2.6.12-rc2 |
1221 |
/* Count loaded sections and allocate structures */ |
8f6d03781 module: sysfs cle... |
1222 1223 |
for (i = 0; i < info->hdr->e_shnum; i++) if (!sect_empty(&info->sechdrs[i])) |
1da177e4c Linux-2.6.12-rc2 |
1224 1225 1226 1227 1228 |
nloaded++; size[0] = ALIGN(sizeof(*sect_attrs) + nloaded * sizeof(sect_attrs->attrs[0]), sizeof(sect_attrs->grp.attrs[0])); size[1] = (nloaded + 1) * sizeof(sect_attrs->grp.attrs[0]); |
04b1db9fd [PATCH] /sys/modu... |
1229 1230 |
sect_attrs = kzalloc(size[0] + size[1], GFP_KERNEL); if (sect_attrs == NULL) |
1da177e4c Linux-2.6.12-rc2 |
1231 1232 1233 1234 1235 |
return; /* Setup section attributes. */ sect_attrs->grp.name = "sections"; sect_attrs->grp.attrs = (void *)sect_attrs + size[0]; |
04b1db9fd [PATCH] /sys/modu... |
1236 |
sect_attrs->nsections = 0; |
1da177e4c Linux-2.6.12-rc2 |
1237 1238 |
sattr = §_attrs->attrs[0]; gattr = §_attrs->grp.attrs[0]; |
8f6d03781 module: sysfs cle... |
1239 1240 1241 |
for (i = 0; i < info->hdr->e_shnum; i++) { Elf_Shdr *sec = &info->sechdrs[i]; if (sect_empty(sec)) |
35dead423 modules: don't ex... |
1242 |
continue; |
8f6d03781 module: sysfs cle... |
1243 1244 |
sattr->address = sec->sh_addr; sattr->name = kstrdup(info->secstrings + sec->sh_name, |
04b1db9fd [PATCH] /sys/modu... |
1245 1246 1247 1248 |
GFP_KERNEL); if (sattr->name == NULL) goto out; sect_attrs->nsections++; |
361795b1e sysfs: Use sysfs_... |
1249 |
sysfs_attr_init(&sattr->mattr.attr); |
1da177e4c Linux-2.6.12-rc2 |
1250 1251 1252 |
sattr->mattr.show = module_sect_show; sattr->mattr.store = NULL; sattr->mattr.attr.name = sattr->name; |
1da177e4c Linux-2.6.12-rc2 |
1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 |
sattr->mattr.attr.mode = S_IRUGO; *(gattr++) = &(sattr++)->mattr.attr; } *gattr = NULL; if (sysfs_create_group(&mod->mkobj.kobj, §_attrs->grp)) goto out; mod->sect_attrs = sect_attrs; return; out: |
04b1db9fd [PATCH] /sys/modu... |
1264 |
free_sect_attrs(sect_attrs); |
1da177e4c Linux-2.6.12-rc2 |
1265 1266 1267 1268 1269 1270 1271 1272 1273 |
} static void remove_sect_attrs(struct module *mod) { if (mod->sect_attrs) { sysfs_remove_group(&mod->mkobj.kobj, &mod->sect_attrs->grp); /* We are positive that no one is using any sect attrs * at this point. Deallocate immediately. */ |
04b1db9fd [PATCH] /sys/modu... |
1274 |
free_sect_attrs(mod->sect_attrs); |
1da177e4c Linux-2.6.12-rc2 |
1275 1276 1277 |
mod->sect_attrs = NULL; } } |
6d7601338 Add /sys/module/n... |
1278 1279 1280 1281 1282 1283 1284 1285 1286 |
/* * /sys/module/foo/notes/.section.name gives contents of SHT_NOTE sections. */ struct module_notes_attrs { struct kobject *dir; unsigned int notes; struct bin_attribute attrs[0]; }; |
2c3c8bea6 sysfs: add struct... |
1287 |
static ssize_t module_notes_read(struct file *filp, struct kobject *kobj, |
6d7601338 Add /sys/module/n... |
1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 |
struct bin_attribute *bin_attr, char *buf, loff_t pos, size_t count) { /* * The caller checked the pos and count against our size. */ memcpy(buf, bin_attr->private + pos, count); return count; } static void free_notes_attrs(struct module_notes_attrs *notes_attrs, unsigned int i) { if (notes_attrs->dir) { while (i-- > 0) sysfs_remove_bin_file(notes_attrs->dir, ¬es_attrs->attrs[i]); |
e94320939 modules: fix modu... |
1305 |
kobject_put(notes_attrs->dir); |
6d7601338 Add /sys/module/n... |
1306 1307 1308 |
} kfree(notes_attrs); } |
8f6d03781 module: sysfs cle... |
1309 |
static void add_notes_attrs(struct module *mod, const struct load_info *info) |
6d7601338 Add /sys/module/n... |
1310 1311 1312 1313 |
{ unsigned int notes, loaded, i; struct module_notes_attrs *notes_attrs; struct bin_attribute *nattr; |
ea6bff368 modules: Fix buil... |
1314 1315 1316 |
/* failed to create section attributes, so can't create notes */ if (!mod->sect_attrs) return; |
6d7601338 Add /sys/module/n... |
1317 1318 |
/* Count notes sections and allocate structures. */ notes = 0; |
8f6d03781 module: sysfs cle... |
1319 1320 1321 |
for (i = 0; i < info->hdr->e_shnum; i++) if (!sect_empty(&info->sechdrs[i]) && (info->sechdrs[i].sh_type == SHT_NOTE)) |
6d7601338 Add /sys/module/n... |
1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 |
++notes; if (notes == 0) return; notes_attrs = kzalloc(sizeof(*notes_attrs) + notes * sizeof(notes_attrs->attrs[0]), GFP_KERNEL); if (notes_attrs == NULL) return; notes_attrs->notes = notes; nattr = ¬es_attrs->attrs[0]; |
8f6d03781 module: sysfs cle... |
1335 1336 |
for (loaded = i = 0; i < info->hdr->e_shnum; ++i) { if (sect_empty(&info->sechdrs[i])) |
6d7601338 Add /sys/module/n... |
1337 |
continue; |
8f6d03781 module: sysfs cle... |
1338 |
if (info->sechdrs[i].sh_type == SHT_NOTE) { |
361795b1e sysfs: Use sysfs_... |
1339 |
sysfs_bin_attr_init(nattr); |
6d7601338 Add /sys/module/n... |
1340 1341 |
nattr->attr.name = mod->sect_attrs->attrs[loaded].name; nattr->attr.mode = S_IRUGO; |
8f6d03781 module: sysfs cle... |
1342 1343 |
nattr->size = info->sechdrs[i].sh_size; nattr->private = (void *) info->sechdrs[i].sh_addr; |
6d7601338 Add /sys/module/n... |
1344 1345 1346 1347 1348 |
nattr->read = module_notes_read; ++nattr; } ++loaded; } |
4ff6abff8 kobject: get rid ... |
1349 |
notes_attrs->dir = kobject_create_and_add("notes", &mod->mkobj.kobj); |
6d7601338 Add /sys/module/n... |
1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 |
if (!notes_attrs->dir) goto out; for (i = 0; i < notes; ++i) if (sysfs_create_bin_file(notes_attrs->dir, ¬es_attrs->attrs[i])) goto out; mod->notes_attrs = notes_attrs; return; out: free_notes_attrs(notes_attrs, i); } static void remove_notes_attrs(struct module *mod) { if (mod->notes_attrs) free_notes_attrs(mod->notes_attrs, mod->notes_attrs->notes); } |
1da177e4c Linux-2.6.12-rc2 |
1370 |
#else |
04b1db9fd [PATCH] /sys/modu... |
1371 |
|
8f6d03781 module: sysfs cle... |
1372 1373 |
static inline void add_sect_attrs(struct module *mod, const struct load_info *info) |
1da177e4c Linux-2.6.12-rc2 |
1374 1375 1376 1377 1378 1379 |
{ } static inline void remove_sect_attrs(struct module *mod) { } |
6d7601338 Add /sys/module/n... |
1380 |
|
8f6d03781 module: sysfs cle... |
1381 1382 |
static inline void add_notes_attrs(struct module *mod, const struct load_info *info) |
6d7601338 Add /sys/module/n... |
1383 1384 1385 1386 1387 1388 |
{ } static inline void remove_notes_attrs(struct module *mod) { } |
8f6d03781 module: sysfs cle... |
1389 |
#endif /* CONFIG_KALLSYMS */ |
1da177e4c Linux-2.6.12-rc2 |
1390 |
|
80a3d1bb4 module: move sysf... |
1391 1392 1393 1394 1395 |
static void add_usage_links(struct module *mod) { #ifdef CONFIG_MODULE_UNLOAD struct module_use *use; int nowarn; |
75676500f module: make lock... |
1396 |
mutex_lock(&module_mutex); |
80a3d1bb4 module: move sysf... |
1397 1398 1399 1400 |
list_for_each_entry(use, &mod->target_list, target_list) { nowarn = sysfs_create_link(use->target->holders_dir, &mod->mkobj.kobj, mod->name); } |
75676500f module: make lock... |
1401 |
mutex_unlock(&module_mutex); |
80a3d1bb4 module: move sysf... |
1402 1403 1404 1405 1406 1407 1408 |
#endif } static void del_usage_links(struct module *mod) { #ifdef CONFIG_MODULE_UNLOAD struct module_use *use; |
75676500f module: make lock... |
1409 |
mutex_lock(&module_mutex); |
80a3d1bb4 module: move sysf... |
1410 1411 |
list_for_each_entry(use, &mod->target_list, target_list) sysfs_remove_link(use->target->holders_dir, mod->name); |
75676500f module: make lock... |
1412 |
mutex_unlock(&module_mutex); |
80a3d1bb4 module: move sysf... |
1413 1414 |
#endif } |
6407ebb27 module: Make modu... |
1415 |
static int module_add_modinfo_attrs(struct module *mod) |
c988d2b28 [PATCH] modules: ... |
1416 1417 |
{ struct module_attribute *attr; |
03e88ae1b [PATCH] fix modul... |
1418 |
struct module_attribute *temp_attr; |
c988d2b28 [PATCH] modules: ... |
1419 1420 |
int error = 0; int i; |
03e88ae1b [PATCH] fix modul... |
1421 1422 1423 1424 1425 1426 1427 |
mod->modinfo_attrs = kzalloc((sizeof(struct module_attribute) * (ARRAY_SIZE(modinfo_attrs) + 1)), GFP_KERNEL); if (!mod->modinfo_attrs) return -ENOMEM; temp_attr = mod->modinfo_attrs; |
c988d2b28 [PATCH] modules: ... |
1428 1429 |
for (i = 0; (attr = modinfo_attrs[i]) && !error; i++) { if (!attr->test || |
03e88ae1b [PATCH] fix modul... |
1430 1431 |
(attr->test && attr->test(mod))) { memcpy(temp_attr, attr, sizeof(*temp_attr)); |
361795b1e sysfs: Use sysfs_... |
1432 |
sysfs_attr_init(&temp_attr->attr); |
03e88ae1b [PATCH] fix modul... |
1433 1434 1435 |
error = sysfs_create_file(&mod->mkobj.kobj,&temp_attr->attr); ++temp_attr; } |
c988d2b28 [PATCH] modules: ... |
1436 1437 1438 |
} return error; } |
6407ebb27 module: Make modu... |
1439 |
static void module_remove_modinfo_attrs(struct module *mod) |
c988d2b28 [PATCH] modules: ... |
1440 1441 1442 |
{ struct module_attribute *attr; int i; |
03e88ae1b [PATCH] fix modul... |
1443 1444 1445 1446 |
for (i = 0; (attr = &mod->modinfo_attrs[i]); i++) { /* pick a field to test for end of list */ if (!attr->attr.name) break; |
c988d2b28 [PATCH] modules: ... |
1447 |
sysfs_remove_file(&mod->mkobj.kobj,&attr->attr); |
03e88ae1b [PATCH] fix modul... |
1448 1449 |
if (attr->free) attr->free(mod); |
c988d2b28 [PATCH] modules: ... |
1450 |
} |
03e88ae1b [PATCH] fix modul... |
1451 |
kfree(mod->modinfo_attrs); |
c988d2b28 [PATCH] modules: ... |
1452 |
} |
1da177e4c Linux-2.6.12-rc2 |
1453 |
|
6407ebb27 module: Make modu... |
1454 |
static int mod_sysfs_init(struct module *mod) |
1da177e4c Linux-2.6.12-rc2 |
1455 1456 |
{ int err; |
6494a93d5 Module: check to ... |
1457 |
struct kobject *kobj; |
1da177e4c Linux-2.6.12-rc2 |
1458 |
|
823bccfc4 remove "struct su... |
1459 1460 1461 |
if (!module_sysfs_initialized) { printk(KERN_ERR "%s: module sysfs not initialized ", |
1cc5f7142 [PATCH] load_modu... |
1462 1463 1464 1465 |
mod->name); err = -EINVAL; goto out; } |
6494a93d5 Module: check to ... |
1466 1467 1468 1469 1470 1471 1472 1473 1474 |
kobj = kset_find_obj(module_kset, mod->name); if (kobj) { printk(KERN_ERR "%s: module is already loaded ", mod->name); kobject_put(kobj); err = -EINVAL; goto out; } |
1da177e4c Linux-2.6.12-rc2 |
1475 |
mod->mkobj.mod = mod; |
e17e0f51a Driver core: show... |
1476 |
|
ac3c8141f Kobject: convert ... |
1477 1478 1479 1480 1481 1482 |
memset(&mod->mkobj.kobj, 0, sizeof(mod->mkobj.kobj)); mod->mkobj.kobj.kset = module_kset; err = kobject_init_and_add(&mod->mkobj.kobj, &module_ktype, NULL, "%s", mod->name); if (err) kobject_put(&mod->mkobj.kobj); |
270a6c4ca /sys/modules/*/ho... |
1483 |
|
97c146ef0 sysfs: fix /sys/m... |
1484 |
/* delay uevent until full sysfs population */ |
270a6c4ca /sys/modules/*/ho... |
1485 1486 1487 |
out: return err; } |
6407ebb27 module: Make modu... |
1488 |
static int mod_sysfs_setup(struct module *mod, |
8f6d03781 module: sysfs cle... |
1489 |
const struct load_info *info, |
270a6c4ca /sys/modules/*/ho... |
1490 1491 1492 1493 |
struct kernel_param *kparam, unsigned int num_params) { int err; |
80a3d1bb4 module: move sysf... |
1494 1495 1496 |
err = mod_sysfs_init(mod); if (err) goto out; |
4ff6abff8 kobject: get rid ... |
1497 |
mod->holders_dir = kobject_create_and_add("holders", &mod->mkobj.kobj); |
240936e18 mod_sysfs_setup()... |
1498 1499 |
if (!mod->holders_dir) { err = -ENOMEM; |
270a6c4ca /sys/modules/*/ho... |
1500 |
goto out_unreg; |
240936e18 mod_sysfs_setup()... |
1501 |
} |
270a6c4ca /sys/modules/*/ho... |
1502 |
|
1da177e4c Linux-2.6.12-rc2 |
1503 1504 |
err = module_param_sysfs_setup(mod, kparam, num_params); if (err) |
270a6c4ca /sys/modules/*/ho... |
1505 |
goto out_unreg_holders; |
1da177e4c Linux-2.6.12-rc2 |
1506 |
|
c988d2b28 [PATCH] modules: ... |
1507 1508 |
err = module_add_modinfo_attrs(mod); if (err) |
e17e0f51a Driver core: show... |
1509 |
goto out_unreg_param; |
c988d2b28 [PATCH] modules: ... |
1510 |
|
80a3d1bb4 module: move sysf... |
1511 |
add_usage_links(mod); |
8f6d03781 module: sysfs cle... |
1512 1513 |
add_sect_attrs(mod, info); add_notes_attrs(mod, info); |
80a3d1bb4 module: move sysf... |
1514 |
|
e17e0f51a Driver core: show... |
1515 |
kobject_uevent(&mod->mkobj.kobj, KOBJ_ADD); |
1da177e4c Linux-2.6.12-rc2 |
1516 |
return 0; |
e17e0f51a Driver core: show... |
1517 1518 |
out_unreg_param: module_param_sysfs_remove(mod); |
270a6c4ca /sys/modules/*/ho... |
1519 |
out_unreg_holders: |
78a2d906b Kobject: convert ... |
1520 |
kobject_put(mod->holders_dir); |
270a6c4ca /sys/modules/*/ho... |
1521 |
out_unreg: |
e17e0f51a Driver core: show... |
1522 |
kobject_put(&mod->mkobj.kobj); |
80a3d1bb4 module: move sysf... |
1523 |
out: |
1da177e4c Linux-2.6.12-rc2 |
1524 1525 |
return err; } |
34e4e2fef modules: proper c... |
1526 1527 1528 |
static void mod_sysfs_fini(struct module *mod) { |
8f6d03781 module: sysfs cle... |
1529 1530 |
remove_notes_attrs(mod); remove_sect_attrs(mod); |
34e4e2fef modules: proper c... |
1531 1532 |
kobject_put(&mod->mkobj.kobj); } |
8f6d03781 module: sysfs cle... |
1533 |
#else /* !CONFIG_SYSFS */ |
34e4e2fef modules: proper c... |
1534 |
|
8f6d03781 module: sysfs cle... |
1535 1536 |
static int mod_sysfs_setup(struct module *mod, const struct load_info *info, |
6407ebb27 module: Make modu... |
1537 1538 1539 1540 1541 |
struct kernel_param *kparam, unsigned int num_params) { return 0; } |
34e4e2fef modules: proper c... |
1542 1543 1544 |
static void mod_sysfs_fini(struct module *mod) { } |
36b0360d1 module: fix sysfs... |
1545 1546 1547 |
static void module_remove_modinfo_attrs(struct module *mod) { } |
80a3d1bb4 module: move sysf... |
1548 1549 1550 |
static void del_usage_links(struct module *mod) { } |
34e4e2fef modules: proper c... |
1551 |
#endif /* CONFIG_SYSFS */ |
1da177e4c Linux-2.6.12-rc2 |
1552 |
|
36b0360d1 module: fix sysfs... |
1553 |
static void mod_sysfs_teardown(struct module *mod) |
1da177e4c Linux-2.6.12-rc2 |
1554 |
{ |
80a3d1bb4 module: move sysf... |
1555 |
del_usage_links(mod); |
c988d2b28 [PATCH] modules: ... |
1556 |
module_remove_modinfo_attrs(mod); |
1da177e4c Linux-2.6.12-rc2 |
1557 |
module_param_sysfs_remove(mod); |
78a2d906b Kobject: convert ... |
1558 1559 |
kobject_put(mod->mkobj.drivers_dir); kobject_put(mod->holders_dir); |
34e4e2fef modules: proper c... |
1560 |
mod_sysfs_fini(mod); |
1da177e4c Linux-2.6.12-rc2 |
1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 |
} /* * unlink the module with the whole machine is stopped with interrupts off * - this defends against kallsyms not taking locks */ static int __unlink_module(void *_mod) { struct module *mod = _mod; list_del(&mod->list); |
5336377d6 modules: Fix modu... |
1571 |
module_bug_cleanup(mod); |
1da177e4c Linux-2.6.12-rc2 |
1572 1573 |
return 0; } |
84e1c6bb3 x86: Add RO/NX pr... |
1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 |
#ifdef CONFIG_DEBUG_SET_MODULE_RONX /* * LKM RO/NX protection: protect module's text/ro-data * from modification and any data from execution. */ void set_page_attributes(void *start, void *end, int (*set)(unsigned long start, int num_pages)) { unsigned long begin_pfn = PFN_DOWN((unsigned long)start); unsigned long end_pfn = PFN_DOWN((unsigned long)end); if (end_pfn > begin_pfn) set(begin_pfn << PAGE_SHIFT, end_pfn - begin_pfn); } static void set_section_ro_nx(void *base, unsigned long text_size, unsigned long ro_size, unsigned long total_size) { /* begin and end PFNs of the current subsection */ unsigned long begin_pfn; unsigned long end_pfn; /* * Set RO for module text and RO-data: * - Always protect first page. * - Do not protect last partial page. */ if (ro_size > 0) set_page_attributes(base, base + ro_size, set_memory_ro); /* * Set NX permissions for module data: * - Do not protect first partial page. * - Always protect last page. */ if (total_size > text_size) { begin_pfn = PFN_UP((unsigned long)base + text_size); end_pfn = PFN_UP((unsigned long)base + total_size); if (end_pfn > begin_pfn) set_memory_nx(begin_pfn << PAGE_SHIFT, end_pfn - begin_pfn); } } |
01526ed08 module: split uns... |
1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 |
static void unset_module_core_ro_nx(struct module *mod) { set_page_attributes(mod->module_core + mod->core_text_size, mod->module_core + mod->core_size, set_memory_x); set_page_attributes(mod->module_core, mod->module_core + mod->core_ro_size, set_memory_rw); } static void unset_module_init_ro_nx(struct module *mod) { set_page_attributes(mod->module_init + mod->init_text_size, mod->module_init + mod->init_size, set_memory_x); set_page_attributes(mod->module_init, mod->module_init + mod->init_ro_size, set_memory_rw); |
84e1c6bb3 x86: Add RO/NX pr... |
1635 1636 1637 |
} /* Iterate through all modules and set each module's text as RW */ |
5d05c7084 minor ANSI protot... |
1638 |
void set_all_modules_text_rw(void) |
84e1c6bb3 x86: Add RO/NX pr... |
1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 |
{ struct module *mod; mutex_lock(&module_mutex); list_for_each_entry_rcu(mod, &modules, list) { if ((mod->module_core) && (mod->core_text_size)) { set_page_attributes(mod->module_core, mod->module_core + mod->core_text_size, set_memory_rw); } if ((mod->module_init) && (mod->init_text_size)) { set_page_attributes(mod->module_init, mod->module_init + mod->init_text_size, set_memory_rw); } } mutex_unlock(&module_mutex); } /* Iterate through all modules and set each module's text as RO */ |
5d05c7084 minor ANSI protot... |
1659 |
void set_all_modules_text_ro(void) |
84e1c6bb3 x86: Add RO/NX pr... |
1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 |
{ struct module *mod; mutex_lock(&module_mutex); list_for_each_entry_rcu(mod, &modules, list) { if ((mod->module_core) && (mod->core_text_size)) { set_page_attributes(mod->module_core, mod->module_core + mod->core_text_size, set_memory_ro); } if ((mod->module_init) && (mod->init_text_size)) { set_page_attributes(mod->module_init, mod->module_init + mod->init_text_size, set_memory_ro); } } mutex_unlock(&module_mutex); } #else static inline void set_section_ro_nx(void *base, unsigned long text_size, unsigned long ro_size, unsigned long total_size) { } |
01526ed08 module: split uns... |
1680 1681 |
static void unset_module_core_ro_nx(struct module *mod) { } static void unset_module_init_ro_nx(struct module *mod) { } |
84e1c6bb3 x86: Add RO/NX pr... |
1682 |
#endif |
74e08fcf7 modules: add defa... |
1683 1684 1685 1686 1687 1688 1689 1690 |
void __weak module_free(struct module *mod, void *module_region) { vfree(module_region); } void __weak module_arch_cleanup(struct module *mod) { } |
75676500f module: make lock... |
1691 |
/* Free a module, remove from lists, etc. */ |
1da177e4c Linux-2.6.12-rc2 |
1692 1693 |
static void free_module(struct module *mod) { |
7ead8b831 tracing/events: A... |
1694 |
trace_module_free(mod); |
1da177e4c Linux-2.6.12-rc2 |
1695 |
/* Delete from various lists */ |
75676500f module: make lock... |
1696 |
mutex_lock(&module_mutex); |
9b1a4d383 stop_machine: Wea... |
1697 |
stop_machine(__unlink_module, mod, NULL); |
75676500f module: make lock... |
1698 |
mutex_unlock(&module_mutex); |
36b0360d1 module: fix sysfs... |
1699 |
mod_sysfs_teardown(mod); |
1da177e4c Linux-2.6.12-rc2 |
1700 |
|
b82bab4bb dynamic debug: mo... |
1701 1702 |
/* Remove dynamic debug info */ ddebug_remove_module(mod->name); |
1da177e4c Linux-2.6.12-rc2 |
1703 1704 1705 1706 1707 |
/* Arch-specific cleanup. */ module_arch_cleanup(mod); /* Module unload stuff */ module_unload_free(mod); |
e180a6b77 param: fix charp ... |
1708 1709 |
/* Free any allocated parameters. */ destroy_params(mod->kp, mod->num_kp); |
1da177e4c Linux-2.6.12-rc2 |
1710 |
/* This may be NULL, but that's OK */ |
01526ed08 module: split uns... |
1711 |
unset_module_init_ro_nx(mod); |
1da177e4c Linux-2.6.12-rc2 |
1712 1713 |
module_free(mod, mod->module_init); kfree(mod->args); |
259354dea module: encapsula... |
1714 |
percpu_modfree(mod); |
9f85a4bbb module: refactor ... |
1715 |
|
fbb9ce953 [PATCH] lockdep: ... |
1716 1717 |
/* Free lock-classes: */ lockdep_free_key_range(mod->module_core, mod->core_size); |
1da177e4c Linux-2.6.12-rc2 |
1718 |
/* Finally, free the core (containing the module structure) */ |
01526ed08 module: split uns... |
1719 |
unset_module_core_ro_nx(mod); |
1da177e4c Linux-2.6.12-rc2 |
1720 |
module_free(mod, mod->module_core); |
eb8cdec4a nommu: add suppor... |
1721 1722 1723 1724 |
#ifdef CONFIG_MPU update_protections(current->mm); #endif |
1da177e4c Linux-2.6.12-rc2 |
1725 1726 1727 1728 1729 |
} void *__symbol_get(const char *symbol) { struct module *owner; |
414fd31b2 module: Make find... |
1730 |
const struct kernel_symbol *sym; |
1da177e4c Linux-2.6.12-rc2 |
1731 |
|
24da1cbff modules: remove m... |
1732 |
preempt_disable(); |
414fd31b2 module: Make find... |
1733 1734 1735 |
sym = find_symbol(symbol, &owner, NULL, true, true); if (sym && strong_try_module_get(owner)) sym = NULL; |
24da1cbff modules: remove m... |
1736 |
preempt_enable(); |
1da177e4c Linux-2.6.12-rc2 |
1737 |
|
414fd31b2 module: Make find... |
1738 |
return sym ? (void *)sym->value : NULL; |
1da177e4c Linux-2.6.12-rc2 |
1739 1740 |
} EXPORT_SYMBOL_GPL(__symbol_get); |
eea8b54dc [PATCH] modules: ... |
1741 1742 |
/* * Ensure that an exported symbol [global namespace] does not already exist |
02a3e59a0 Fix minor typoes ... |
1743 |
* in the kernel or in some other module's exported symbol table. |
be593f4ce module: verify_ex... |
1744 1745 |
* * You must hold the module_mutex. |
eea8b54dc [PATCH] modules: ... |
1746 1747 1748 |
*/ static int verify_export_symbols(struct module *mod) { |
b211104d1 module: Enhance v... |
1749 |
unsigned int i; |
eea8b54dc [PATCH] modules: ... |
1750 |
struct module *owner; |
b211104d1 module: Enhance v... |
1751 1752 1753 1754 1755 1756 1757 1758 |
const struct kernel_symbol *s; struct { const struct kernel_symbol *sym; unsigned int num; } arr[] = { { mod->syms, mod->num_syms }, { mod->gpl_syms, mod->num_gpl_syms }, { mod->gpl_future_syms, mod->num_gpl_future_syms }, |
f7f5b6755 Shrink struct mod... |
1759 |
#ifdef CONFIG_UNUSED_SYMBOLS |
b211104d1 module: Enhance v... |
1760 1761 |
{ mod->unused_syms, mod->num_unused_syms }, { mod->unused_gpl_syms, mod->num_unused_gpl_syms }, |
f7f5b6755 Shrink struct mod... |
1762 |
#endif |
b211104d1 module: Enhance v... |
1763 |
}; |
eea8b54dc [PATCH] modules: ... |
1764 |
|
b211104d1 module: Enhance v... |
1765 1766 |
for (i = 0; i < ARRAY_SIZE(arr); i++) { for (s = arr[i].sym; s < arr[i].sym + arr[i].num; s++) { |
be593f4ce module: verify_ex... |
1767 |
if (find_symbol(s->name, &owner, NULL, true, false)) { |
b211104d1 module: Enhance v... |
1768 1769 1770 1771 1772 1773 1774 |
printk(KERN_ERR "%s: exports duplicate symbol %s" " (owned by %s) ", mod->name, s->name, module_name(owner)); return -ENOEXEC; } |
eea8b54dc [PATCH] modules: ... |
1775 |
} |
b211104d1 module: Enhance v... |
1776 1777 |
} return 0; |
eea8b54dc [PATCH] modules: ... |
1778 |
} |
9a4b9708f module: fix and e... |
1779 |
/* Change all symbols so that st_value encodes the pointer directly. */ |
49668688d module: pass load... |
1780 1781 1782 1783 |
static int simplify_symbols(struct module *mod, const struct load_info *info) { Elf_Shdr *symsec = &info->sechdrs[info->index.sym]; Elf_Sym *sym = (void *)symsec->sh_addr; |
1da177e4c Linux-2.6.12-rc2 |
1784 |
unsigned long secbase; |
49668688d module: pass load... |
1785 |
unsigned int i; |
1da177e4c Linux-2.6.12-rc2 |
1786 |
int ret = 0; |
414fd31b2 module: Make find... |
1787 |
const struct kernel_symbol *ksym; |
1da177e4c Linux-2.6.12-rc2 |
1788 |
|
49668688d module: pass load... |
1789 1790 |
for (i = 1; i < symsec->sh_size / sizeof(Elf_Sym); i++) { const char *name = info->strtab + sym[i].st_name; |
1da177e4c Linux-2.6.12-rc2 |
1791 1792 1793 1794 |
switch (sym[i].st_shndx) { case SHN_COMMON: /* We compiled with -fno-common. These are not supposed to happen. */ |
5e1241692 module: replace D... |
1795 1796 |
pr_debug("Common symbol: %s ", name); |
1da177e4c Linux-2.6.12-rc2 |
1797 1798 1799 1800 1801 1802 1803 1804 |
printk("%s: please compile with -fno-common ", mod->name); ret = -ENOEXEC; break; case SHN_ABS: /* Don't need to do anything */ |
5e1241692 module: replace D... |
1805 1806 |
pr_debug("Absolute symbol: 0x%08lx ", |
1da177e4c Linux-2.6.12-rc2 |
1807 1808 1809 1810 |
(long)sym[i].st_value); break; case SHN_UNDEF: |
49668688d module: pass load... |
1811 |
ksym = resolve_symbol_wait(mod, info, name); |
1da177e4c Linux-2.6.12-rc2 |
1812 |
/* Ok if resolved. */ |
9bea7f239 module: fix bne2 ... |
1813 |
if (ksym && !IS_ERR(ksym)) { |
414fd31b2 module: Make find... |
1814 |
sym[i].st_value = ksym->value; |
1da177e4c Linux-2.6.12-rc2 |
1815 |
break; |
414fd31b2 module: Make find... |
1816 |
} |
1da177e4c Linux-2.6.12-rc2 |
1817 |
/* Ok if weak. */ |
9bea7f239 module: fix bne2 ... |
1818 |
if (!ksym && ELF_ST_BIND(sym[i].st_info) == STB_WEAK) |
1da177e4c Linux-2.6.12-rc2 |
1819 |
break; |
9bea7f239 module: fix bne2 ... |
1820 1821 |
printk(KERN_WARNING "%s: Unknown symbol %s (err %li) ", |
49668688d module: pass load... |
1822 |
mod->name, name, PTR_ERR(ksym)); |
9bea7f239 module: fix bne2 ... |
1823 |
ret = PTR_ERR(ksym) ?: -ENOENT; |
1da177e4c Linux-2.6.12-rc2 |
1824 1825 1826 1827 |
break; default: /* Divert to percpu allocation if a percpu var. */ |
49668688d module: pass load... |
1828 |
if (sym[i].st_shndx == info->index.pcpu) |
259354dea module: encapsula... |
1829 |
secbase = (unsigned long)mod_percpu(mod); |
1da177e4c Linux-2.6.12-rc2 |
1830 |
else |
49668688d module: pass load... |
1831 |
secbase = info->sechdrs[sym[i].st_shndx].sh_addr; |
1da177e4c Linux-2.6.12-rc2 |
1832 1833 1834 1835 1836 1837 1838 |
sym[i].st_value += secbase; break; } } return ret; } |
74e08fcf7 modules: add defa... |
1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 |
int __weak apply_relocate(Elf_Shdr *sechdrs, const char *strtab, unsigned int symindex, unsigned int relsec, struct module *me) { pr_err("module %s: REL relocation unsupported ", me->name); return -ENOEXEC; } int __weak apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab, unsigned int symindex, unsigned int relsec, struct module *me) { pr_err("module %s: RELA relocation unsupported ", me->name); return -ENOEXEC; } |
49668688d module: pass load... |
1860 |
static int apply_relocations(struct module *mod, const struct load_info *info) |
22e268ebe module: refactor ... |
1861 1862 1863 1864 1865 |
{ unsigned int i; int err = 0; /* Now do relocations. */ |
49668688d module: pass load... |
1866 1867 |
for (i = 1; i < info->hdr->e_shnum; i++) { unsigned int infosec = info->sechdrs[i].sh_info; |
22e268ebe module: refactor ... |
1868 1869 |
/* Not a valid relocation section? */ |
49668688d module: pass load... |
1870 |
if (infosec >= info->hdr->e_shnum) |
22e268ebe module: refactor ... |
1871 1872 1873 |
continue; /* Don't bother with non-allocated sections */ |
49668688d module: pass load... |
1874 |
if (!(info->sechdrs[infosec].sh_flags & SHF_ALLOC)) |
22e268ebe module: refactor ... |
1875 |
continue; |
49668688d module: pass load... |
1876 1877 1878 1879 1880 1881 |
if (info->sechdrs[i].sh_type == SHT_REL) err = apply_relocate(info->sechdrs, info->strtab, info->index.sym, i, mod); else if (info->sechdrs[i].sh_type == SHT_RELA) err = apply_relocate_add(info->sechdrs, info->strtab, info->index.sym, i, mod); |
22e268ebe module: refactor ... |
1882 1883 1884 1885 1886 |
if (err < 0) break; } return err; } |
088af9a6e module: fix modul... |
1887 1888 1889 1890 1891 1892 1893 |
/* Additional bytes needed by arch in front of individual sections */ unsigned int __weak arch_mod_section_prepend(struct module *mod, unsigned int section) { /* default implementation just returns zero */ return 0; } |
1da177e4c Linux-2.6.12-rc2 |
1894 |
/* Update size with this section: return offset. */ |
088af9a6e module: fix modul... |
1895 1896 |
static long get_offset(struct module *mod, unsigned int *size, Elf_Shdr *sechdr, unsigned int section) |
1da177e4c Linux-2.6.12-rc2 |
1897 1898 |
{ long ret; |
088af9a6e module: fix modul... |
1899 |
*size += arch_mod_section_prepend(mod, section); |
1da177e4c Linux-2.6.12-rc2 |
1900 1901 1902 1903 1904 1905 1906 1907 1908 |
ret = ALIGN(*size, sechdr->sh_addralign ?: 1); *size = ret + sechdr->sh_size; return ret; } /* Lay out the SHF_ALLOC sections in a way not dissimilar to how ld might -- code, read-only data, read-write data, small data. Tally sizes, and place the offsets into sh_entsize fields: high bit means it belongs in init. */ |
49668688d module: pass load... |
1909 |
static void layout_sections(struct module *mod, struct load_info *info) |
1da177e4c Linux-2.6.12-rc2 |
1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 |
{ static unsigned long const masks[][2] = { /* NOTE: all executable code must be the first section * in this array; otherwise modify the text_size * finder in the two loops below */ { SHF_EXECINSTR | SHF_ALLOC, ARCH_SHF_SMALL }, { SHF_ALLOC, SHF_WRITE | ARCH_SHF_SMALL }, { SHF_WRITE | SHF_ALLOC, ARCH_SHF_SMALL }, { ARCH_SHF_SMALL | SHF_ALLOC, 0 } }; unsigned int m, i; |
49668688d module: pass load... |
1921 1922 |
for (i = 0; i < info->hdr->e_shnum; i++) info->sechdrs[i].sh_entsize = ~0UL; |
1da177e4c Linux-2.6.12-rc2 |
1923 |
|
5e1241692 module: replace D... |
1924 1925 |
pr_debug("Core section allocation order: "); |
1da177e4c Linux-2.6.12-rc2 |
1926 |
for (m = 0; m < ARRAY_SIZE(masks); ++m) { |
49668688d module: pass load... |
1927 1928 1929 |
for (i = 0; i < info->hdr->e_shnum; ++i) { Elf_Shdr *s = &info->sechdrs[i]; const char *sname = info->secstrings + s->sh_name; |
1da177e4c Linux-2.6.12-rc2 |
1930 1931 1932 1933 |
if ((s->sh_flags & masks[m][0]) != masks[m][0] || (s->sh_flags & masks[m][1]) || s->sh_entsize != ~0UL |
49668688d module: pass load... |
1934 |
|| strstarts(sname, ".init")) |
1da177e4c Linux-2.6.12-rc2 |
1935 |
continue; |
088af9a6e module: fix modul... |
1936 |
s->sh_entsize = get_offset(mod, &mod->core_size, s, i); |
5e1241692 module: replace D... |
1937 1938 |
pr_debug("\t%s ", sname); |
1da177e4c Linux-2.6.12-rc2 |
1939 |
} |
84e1c6bb3 x86: Add RO/NX pr... |
1940 1941 1942 |
switch (m) { case 0: /* executable */ mod->core_size = debug_align(mod->core_size); |
1da177e4c Linux-2.6.12-rc2 |
1943 |
mod->core_text_size = mod->core_size; |
84e1c6bb3 x86: Add RO/NX pr... |
1944 1945 1946 1947 1948 1949 1950 1951 1952 |
break; case 1: /* RO: text and ro-data */ mod->core_size = debug_align(mod->core_size); mod->core_ro_size = mod->core_size; break; case 3: /* whole core */ mod->core_size = debug_align(mod->core_size); break; } |
1da177e4c Linux-2.6.12-rc2 |
1953 |
} |
5e1241692 module: replace D... |
1954 1955 |
pr_debug("Init section allocation order: "); |
1da177e4c Linux-2.6.12-rc2 |
1956 |
for (m = 0; m < ARRAY_SIZE(masks); ++m) { |
49668688d module: pass load... |
1957 1958 1959 |
for (i = 0; i < info->hdr->e_shnum; ++i) { Elf_Shdr *s = &info->sechdrs[i]; const char *sname = info->secstrings + s->sh_name; |
1da177e4c Linux-2.6.12-rc2 |
1960 1961 1962 1963 |
if ((s->sh_flags & masks[m][0]) != masks[m][0] || (s->sh_flags & masks[m][1]) || s->sh_entsize != ~0UL |
49668688d module: pass load... |
1964 |
|| !strstarts(sname, ".init")) |
1da177e4c Linux-2.6.12-rc2 |
1965 |
continue; |
088af9a6e module: fix modul... |
1966 |
s->sh_entsize = (get_offset(mod, &mod->init_size, s, i) |
1da177e4c Linux-2.6.12-rc2 |
1967 |
| INIT_OFFSET_MASK); |
5e1241692 module: replace D... |
1968 1969 |
pr_debug("\t%s ", sname); |
1da177e4c Linux-2.6.12-rc2 |
1970 |
} |
84e1c6bb3 x86: Add RO/NX pr... |
1971 1972 1973 |
switch (m) { case 0: /* executable */ mod->init_size = debug_align(mod->init_size); |
1da177e4c Linux-2.6.12-rc2 |
1974 |
mod->init_text_size = mod->init_size; |
84e1c6bb3 x86: Add RO/NX pr... |
1975 1976 1977 1978 1979 1980 1981 1982 1983 |
break; case 1: /* RO: text and ro-data */ mod->init_size = debug_align(mod->init_size); mod->init_ro_size = mod->init_size; break; case 3: /* whole init */ mod->init_size = debug_align(mod->init_size); break; } |
1da177e4c Linux-2.6.12-rc2 |
1984 1985 |
} } |
1da177e4c Linux-2.6.12-rc2 |
1986 1987 1988 1989 |
static void set_license(struct module *mod, const char *license) { if (!license) license = "unspecified"; |
fa3ba2e81 [PATCH] fix Modul... |
1990 |
if (!license_is_gpl_compatible(license)) { |
25ddbb18a Make the taint fl... |
1991 |
if (!test_taint(TAINT_PROPRIETARY_MODULE)) |
1d4d26276 [PATCH] Add missi... |
1992 |
printk(KERN_WARNING "%s: module license '%s' taints " |
fa3ba2e81 [PATCH] fix Modul... |
1993 1994 1995 |
"kernel. ", mod->name, license); add_taint_module(mod, TAINT_PROPRIETARY_MODULE); |
1da177e4c Linux-2.6.12-rc2 |
1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 |
} } /* Parse tag=value strings from .modinfo section */ static char *next_string(char *string, unsigned long *secsize) { /* Skip non-zero chars */ while (string[0]) { string++; if ((*secsize)-- <= 1) return NULL; } /* Skip any zero padding. */ while (!string[0]) { string++; if ((*secsize)-- <= 1) return NULL; } return string; } |
49668688d module: pass load... |
2017 |
static char *get_modinfo(struct load_info *info, const char *tag) |
1da177e4c Linux-2.6.12-rc2 |
2018 2019 2020 |
{ char *p; unsigned int taglen = strlen(tag); |
49668688d module: pass load... |
2021 2022 |
Elf_Shdr *infosec = &info->sechdrs[info->index.info]; unsigned long size = infosec->sh_size; |
1da177e4c Linux-2.6.12-rc2 |
2023 |
|
49668688d module: pass load... |
2024 |
for (p = (char *)infosec->sh_addr; p; p = next_string(p, &size)) { |
1da177e4c Linux-2.6.12-rc2 |
2025 2026 2027 2028 2029 |
if (strncmp(p, tag, taglen) == 0 && p[taglen] == '=') return p + taglen + 1; } return NULL; } |
49668688d module: pass load... |
2030 |
static void setup_modinfo(struct module *mod, struct load_info *info) |
c988d2b28 [PATCH] modules: ... |
2031 2032 2033 2034 2035 2036 |
{ struct module_attribute *attr; int i; for (i = 0; (attr = modinfo_attrs[i]); i++) { if (attr->setup) |
49668688d module: pass load... |
2037 |
attr->setup(mod, get_modinfo(info, attr->attr.name)); |
c988d2b28 [PATCH] modules: ... |
2038 2039 |
} } |
c988d2b28 [PATCH] modules: ... |
2040 |
|
a263f7763 module: fix memor... |
2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 |
static void free_modinfo(struct module *mod) { struct module_attribute *attr; int i; for (i = 0; (attr = modinfo_attrs[i]); i++) { if (attr->free) attr->free(mod); } } |
1da177e4c Linux-2.6.12-rc2 |
2051 |
#ifdef CONFIG_KALLSYMS |
15bba37d6 module: fix build... |
2052 2053 2054 2055 2056 2057 |
/* lookup symbol in given range of kernel_symbols */ static const struct kernel_symbol *lookup_symbol(const char *name, const struct kernel_symbol *start, const struct kernel_symbol *stop) { |
9d63487f8 module: Use binar... |
2058 2059 |
return bsearch(name, start, stop - start, sizeof(struct kernel_symbol), cmp_name); |
15bba37d6 module: fix build... |
2060 |
} |
ca4787b77 kernel/module.c: ... |
2061 2062 |
static int is_exported(const char *name, unsigned long value, const struct module *mod) |
1da177e4c Linux-2.6.12-rc2 |
2063 |
{ |
ca4787b77 kernel/module.c: ... |
2064 2065 2066 |
const struct kernel_symbol *ks; if (!mod) ks = lookup_symbol(name, __start___ksymtab, __stop___ksymtab); |
3fd6805f4 [PATCH] Clean up ... |
2067 |
else |
ca4787b77 kernel/module.c: ... |
2068 2069 |
ks = lookup_symbol(name, mod->syms, mod->syms + mod->num_syms); return ks != NULL && ks->value == value; |
1da177e4c Linux-2.6.12-rc2 |
2070 2071 2072 |
} /* As per nm */ |
eded41c1c module: kallsyms ... |
2073 |
static char elf_type(const Elf_Sym *sym, const struct load_info *info) |
1da177e4c Linux-2.6.12-rc2 |
2074 |
{ |
eded41c1c module: kallsyms ... |
2075 |
const Elf_Shdr *sechdrs = info->sechdrs; |
1da177e4c Linux-2.6.12-rc2 |
2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 |
if (ELF_ST_BIND(sym->st_info) == STB_WEAK) { if (ELF_ST_TYPE(sym->st_info) == STT_OBJECT) return 'v'; else return 'w'; } if (sym->st_shndx == SHN_UNDEF) return 'U'; if (sym->st_shndx == SHN_ABS) return 'a'; if (sym->st_shndx >= SHN_LORESERVE) return '?'; if (sechdrs[sym->st_shndx].sh_flags & SHF_EXECINSTR) return 't'; if (sechdrs[sym->st_shndx].sh_flags & SHF_ALLOC && sechdrs[sym->st_shndx].sh_type != SHT_NOBITS) { if (!(sechdrs[sym->st_shndx].sh_flags & SHF_WRITE)) return 'r'; else if (sechdrs[sym->st_shndx].sh_flags & ARCH_SHF_SMALL) return 'g'; else return 'd'; } if (sechdrs[sym->st_shndx].sh_type == SHT_NOBITS) { if (sechdrs[sym->st_shndx].sh_flags & ARCH_SHF_SMALL) return 's'; else return 'b'; } |
eded41c1c module: kallsyms ... |
2105 2106 |
if (strstarts(info->secstrings + sechdrs[sym->st_shndx].sh_name, ".debug")) { |
1da177e4c Linux-2.6.12-rc2 |
2107 |
return 'n'; |
eded41c1c module: kallsyms ... |
2108 |
} |
1da177e4c Linux-2.6.12-rc2 |
2109 2110 |
return '?'; } |
4a4962263 module: reduce sy... |
2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 |
static bool is_core_symbol(const Elf_Sym *src, const Elf_Shdr *sechdrs, unsigned int shnum) { const Elf_Shdr *sec; if (src->st_shndx == SHN_UNDEF || src->st_shndx >= shnum || !src->st_name) return false; sec = sechdrs + src->st_shndx; if (!(sec->sh_flags & SHF_ALLOC) #ifndef CONFIG_KALLSYMS_ALL || !(sec->sh_flags & SHF_EXECINSTR) #endif || (sec->sh_entsize & INIT_OFFSET_MASK)) return false; return true; } |
48fd11880 module: Fix perfo... |
2131 2132 2133 2134 2135 2136 2137 |
/* * We only allocate and copy the strings needed by the parts of symtab * we keep. This is simple, but has the effect of making multiple * copies of duplicates. We could be more sophisticated, see * linux-kernel thread starting with * <73defb5e4bca04a6431392cc341112b1@localhost>. */ |
49668688d module: pass load... |
2138 |
static void layout_symtab(struct module *mod, struct load_info *info) |
4a4962263 module: reduce sy... |
2139 |
{ |
49668688d module: pass load... |
2140 2141 |
Elf_Shdr *symsect = info->sechdrs + info->index.sym; Elf_Shdr *strsect = info->sechdrs + info->index.str; |
4a4962263 module: reduce sy... |
2142 |
const Elf_Sym *src; |
48fd11880 module: Fix perfo... |
2143 |
unsigned int i, nsrc, ndst, strtab_size; |
4a4962263 module: reduce sy... |
2144 2145 2146 2147 |
/* Put symbol section at end of init part of module. */ symsect->sh_flags |= SHF_ALLOC; symsect->sh_entsize = get_offset(mod, &mod->init_size, symsect, |
49668688d module: pass load... |
2148 |
info->index.sym) | INIT_OFFSET_MASK; |
5e1241692 module: replace D... |
2149 2150 |
pr_debug("\t%s ", info->secstrings + symsect->sh_name); |
4a4962263 module: reduce sy... |
2151 |
|
49668688d module: pass load... |
2152 |
src = (void *)info->hdr + symsect->sh_offset; |
4a4962263 module: reduce sy... |
2153 |
nsrc = symsect->sh_size / sizeof(*src); |
70b1e9161 module: Add comme... |
2154 |
|
48fd11880 module: Fix perfo... |
2155 2156 |
/* Compute total space required for the core symbols' strtab. */ for (ndst = i = strtab_size = 1; i < nsrc; ++i, ++src) |
49668688d module: pass load... |
2157 |
if (is_core_symbol(src, info->sechdrs, info->hdr->e_shnum)) { |
48fd11880 module: Fix perfo... |
2158 2159 |
strtab_size += strlen(&info->strtab[src->st_name]) + 1; ndst++; |
554bdfe5a module: reduce st... |
2160 |
} |
4a4962263 module: reduce sy... |
2161 2162 |
/* Append room for core symbols at end of core part. */ |
49668688d module: pass load... |
2163 |
info->symoffs = ALIGN(mod->core_size, symsect->sh_addralign ?: 1); |
48fd11880 module: Fix perfo... |
2164 2165 |
info->stroffs = mod->core_size = info->symoffs + ndst * sizeof(Elf_Sym); mod->core_size += strtab_size; |
4a4962263 module: reduce sy... |
2166 |
|
554bdfe5a module: reduce st... |
2167 2168 2169 |
/* Put string table section at end of init part of module. */ strsect->sh_flags |= SHF_ALLOC; strsect->sh_entsize = get_offset(mod, &mod->init_size, strsect, |
49668688d module: pass load... |
2170 |
info->index.str) | INIT_OFFSET_MASK; |
5e1241692 module: replace D... |
2171 2172 |
pr_debug("\t%s ", info->secstrings + strsect->sh_name); |
4a4962263 module: reduce sy... |
2173 |
} |
811d66a0e module: group pos... |
2174 |
static void add_kallsyms(struct module *mod, const struct load_info *info) |
1da177e4c Linux-2.6.12-rc2 |
2175 |
{ |
4a4962263 module: reduce sy... |
2176 2177 2178 |
unsigned int i, ndst; const Elf_Sym *src; Elf_Sym *dst; |
554bdfe5a module: reduce st... |
2179 |
char *s; |
eded41c1c module: kallsyms ... |
2180 |
Elf_Shdr *symsec = &info->sechdrs[info->index.sym]; |
1da177e4c Linux-2.6.12-rc2 |
2181 |
|
eded41c1c module: kallsyms ... |
2182 2183 |
mod->symtab = (void *)symsec->sh_addr; mod->num_symtab = symsec->sh_size / sizeof(Elf_Sym); |
511ca6ae4 module: fix crash... |
2184 2185 |
/* Make sure we get permanent strtab: don't use info->strtab. */ mod->strtab = (void *)info->sechdrs[info->index.str].sh_addr; |
1da177e4c Linux-2.6.12-rc2 |
2186 2187 2188 |
/* Set types up while we still have access to sections. */ for (i = 0; i < mod->num_symtab; i++) |
eded41c1c module: kallsyms ... |
2189 |
mod->symtab[i].st_info = elf_type(&mod->symtab[i], info); |
4a4962263 module: reduce sy... |
2190 |
|
d913188c7 module: layout_an... |
2191 |
mod->core_symtab = dst = mod->module_core + info->symoffs; |
48fd11880 module: Fix perfo... |
2192 |
mod->core_strtab = s = mod->module_core + info->stroffs; |
4a4962263 module: reduce sy... |
2193 2194 |
src = mod->symtab; *dst = *src; |
48fd11880 module: Fix perfo... |
2195 |
*s++ = 0; |
4a4962263 module: reduce sy... |
2196 |
for (ndst = i = 1; i < mod->num_symtab; ++i, ++src) { |
eded41c1c module: kallsyms ... |
2197 |
if (!is_core_symbol(src, info->sechdrs, info->hdr->e_shnum)) |
4a4962263 module: reduce sy... |
2198 |
continue; |
48fd11880 module: Fix perfo... |
2199 |
|
4a4962263 module: reduce sy... |
2200 |
dst[ndst] = *src; |
48fd11880 module: Fix perfo... |
2201 2202 |
dst[ndst++].st_name = s - mod->core_strtab; s += strlcpy(s, &mod->strtab[src->st_name], KSYM_NAME_LEN) + 1; |
4a4962263 module: reduce sy... |
2203 2204 |
} mod->core_num_syms = ndst; |
1da177e4c Linux-2.6.12-rc2 |
2205 2206 |
} #else |
49668688d module: pass load... |
2207 |
static inline void layout_symtab(struct module *mod, struct load_info *info) |
4a4962263 module: reduce sy... |
2208 2209 |
{ } |
3ae91c21d module: fix up CO... |
2210 |
|
abbce906d (trivial) Fix com... |
2211 |
static void add_kallsyms(struct module *mod, const struct load_info *info) |
1da177e4c Linux-2.6.12-rc2 |
2212 2213 2214 |
{ } #endif /* CONFIG_KALLSYMS */ |
e9d376f0f dynamic debug: co... |
2215 |
static void dynamic_debug_setup(struct _ddebug *debug, unsigned int num) |
346e15beb driver core: basi... |
2216 |
{ |
811d66a0e module: group pos... |
2217 2218 |
if (!debug) return; |
e9d376f0f dynamic debug: co... |
2219 2220 2221 2222 2223 2224 |
#ifdef CONFIG_DYNAMIC_DEBUG if (ddebug_add_module(debug, num, debug->modname)) printk(KERN_ERR "dynamic debug error adding module: %s ", debug->modname); #endif |
5e458cc0f module: simplify ... |
2225 |
} |
346e15beb driver core: basi... |
2226 |
|
ff49d74ad module: initializ... |
2227 2228 2229 2230 2231 |
static void dynamic_debug_remove(struct _ddebug *debug) { if (debug) ddebug_remove_module(debug->modname); } |
74e08fcf7 modules: add defa... |
2232 2233 2234 2235 |
void * __weak module_alloc(unsigned long size) { return size == 0 ? NULL : vmalloc_exec(size); } |
3a642e99b modules: Take a s... |
2236 2237 2238 2239 2240 |
static void *module_alloc_update_bounds(unsigned long size) { void *ret = module_alloc(size); if (ret) { |
75676500f module: make lock... |
2241 |
mutex_lock(&module_mutex); |
3a642e99b modules: Take a s... |
2242 2243 2244 2245 2246 |
/* Update module bounds. */ if ((unsigned long)ret < module_addr_min) module_addr_min = (unsigned long)ret; if ((unsigned long)ret + size > module_addr_max) module_addr_max = (unsigned long)ret + size; |
75676500f module: make lock... |
2247 |
mutex_unlock(&module_mutex); |
3a642e99b modules: Take a s... |
2248 2249 2250 |
} return ret; } |
4f2294b6d kmemleak: Add mod... |
2251 |
#ifdef CONFIG_DEBUG_KMEMLEAK |
49668688d module: pass load... |
2252 2253 |
static void kmemleak_load_module(const struct module *mod, const struct load_info *info) |
4f2294b6d kmemleak: Add mod... |
2254 2255 2256 2257 |
{ unsigned int i; /* only scan the sections containing data */ |
c017b4be3 kmemleak: Simplif... |
2258 |
kmemleak_scan_area(mod, sizeof(struct module), GFP_KERNEL); |
4f2294b6d kmemleak: Add mod... |
2259 |
|
49668688d module: pass load... |
2260 2261 2262 |
for (i = 1; i < info->hdr->e_shnum; i++) { const char *name = info->secstrings + info->sechdrs[i].sh_name; if (!(info->sechdrs[i].sh_flags & SHF_ALLOC)) |
4f2294b6d kmemleak: Add mod... |
2263 |
continue; |
49668688d module: pass load... |
2264 |
if (!strstarts(name, ".data") && !strstarts(name, ".bss")) |
4f2294b6d kmemleak: Add mod... |
2265 |
continue; |
49668688d module: pass load... |
2266 2267 |
kmemleak_scan_area((void *)info->sechdrs[i].sh_addr, info->sechdrs[i].sh_size, GFP_KERNEL); |
4f2294b6d kmemleak: Add mod... |
2268 2269 2270 |
} } #else |
49668688d module: pass load... |
2271 2272 |
static inline void kmemleak_load_module(const struct module *mod, const struct load_info *info) |
4f2294b6d kmemleak: Add mod... |
2273 2274 2275 |
{ } #endif |
6526c534b module: move modu... |
2276 |
/* Sets info->hdr and info->len. */ |
d913188c7 module: layout_an... |
2277 2278 2279 |
static int copy_and_check(struct load_info *info, const void __user *umod, unsigned long len, const char __user *uargs) |
40dd2560e module: refactor ... |
2280 2281 2282 2283 2284 2285 2286 2287 2288 |
{ int err; Elf_Ehdr *hdr; if (len < sizeof(*hdr)) return -ENOEXEC; /* Suck in entire file: we'll want most of it. */ /* vmalloc barfs on "unusual" numbers. Check here */ |
3264d3f9d module: add load_... |
2289 |
if (len > 64 * 1024 * 1024 || (hdr = vmalloc(len)) == NULL) |
40dd2560e module: refactor ... |
2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 |
return -ENOMEM; if (copy_from_user(hdr, umod, len) != 0) { err = -EFAULT; goto free_hdr; } /* Sanity checks against insmoding binaries or wrong arch, weird elf version */ if (memcmp(hdr->e_ident, ELFMAG, SELFMAG) != 0 || hdr->e_type != ET_REL || !elf_check_arch(hdr) || hdr->e_shentsize != sizeof(Elf_Shdr)) { err = -ENOEXEC; goto free_hdr; } if (len < hdr->e_shoff + hdr->e_shnum * sizeof(Elf_Shdr)) { err = -ENOEXEC; goto free_hdr; } |
d913188c7 module: layout_an... |
2311 |
|
3264d3f9d module: add load_... |
2312 2313 |
info->hdr = hdr; info->len = len; |
40dd2560e module: refactor ... |
2314 2315 2316 2317 2318 2319 |
return 0; free_hdr: vfree(hdr); return err; } |
d913188c7 module: layout_an... |
2320 2321 |
static void free_copy(struct load_info *info) { |
d913188c7 module: layout_an... |
2322 2323 |
vfree(info->hdr); } |
8b5f61a79 module: refactor ... |
2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 |
static int rewrite_section_headers(struct load_info *info) { unsigned int i; /* This should always be true, but let's be sure. */ info->sechdrs[0].sh_addr = 0; for (i = 1; i < info->hdr->e_shnum; i++) { Elf_Shdr *shdr = &info->sechdrs[i]; if (shdr->sh_type != SHT_NOBITS && info->len < shdr->sh_offset + shdr->sh_size) { printk(KERN_ERR "Module len %lu truncated ", info->len); return -ENOEXEC; } /* Mark all sections sh_addr with their address in the temporary image. */ shdr->sh_addr = (size_t)info->hdr + shdr->sh_offset; #ifndef CONFIG_MODULE_UNLOAD /* Don't load .exit sections */ if (strstarts(info->secstrings+shdr->sh_name, ".exit")) shdr->sh_flags &= ~(unsigned long)SHF_ALLOC; #endif |
8b5f61a79 module: refactor ... |
2350 |
} |
d6df72a06 module: refactor ... |
2351 2352 |
/* Track but don't keep modinfo and version sections. */ |
49668688d module: pass load... |
2353 2354 |
info->index.vers = find_sec(info, "__versions"); info->index.info = find_sec(info, ".modinfo"); |
d6df72a06 module: refactor ... |
2355 2356 |
info->sechdrs[info->index.info].sh_flags &= ~(unsigned long)SHF_ALLOC; info->sechdrs[info->index.vers].sh_flags &= ~(unsigned long)SHF_ALLOC; |
8b5f61a79 module: refactor ... |
2357 2358 |
return 0; } |
3264d3f9d module: add load_... |
2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 |
/* * Set up our basic convenience variables (pointers to section headers, * search for module section index etc), and do some basic section * verification. * * Return the temporary module pointer (we'll replace it with the final * one when we move the module sections around). */ static struct module *setup_load_info(struct load_info *info) { unsigned int i; |
8b5f61a79 module: refactor ... |
2370 |
int err; |
3264d3f9d module: add load_... |
2371 2372 2373 2374 |
struct module *mod; /* Set up the convenience variables */ info->sechdrs = (void *)info->hdr + info->hdr->e_shoff; |
8b5f61a79 module: refactor ... |
2375 2376 |
info->secstrings = (void *)info->hdr + info->sechdrs[info->hdr->e_shstrndx].sh_offset; |
3264d3f9d module: add load_... |
2377 |
|
8b5f61a79 module: refactor ... |
2378 2379 2380 |
err = rewrite_section_headers(info); if (err) return ERR_PTR(err); |
3264d3f9d module: add load_... |
2381 |
|
8b5f61a79 module: refactor ... |
2382 2383 |
/* Find internal symbols and strings. */ for (i = 1; i < info->hdr->e_shnum; i++) { |
3264d3f9d module: add load_... |
2384 2385 2386 |
if (info->sechdrs[i].sh_type == SHT_SYMTAB) { info->index.sym = i; info->index.str = info->sechdrs[i].sh_link; |
8b5f61a79 module: refactor ... |
2387 2388 2389 |
info->strtab = (char *)info->hdr + info->sechdrs[info->index.str].sh_offset; break; |
3264d3f9d module: add load_... |
2390 |
} |
3264d3f9d module: add load_... |
2391 |
} |
49668688d module: pass load... |
2392 |
info->index.mod = find_sec(info, ".gnu.linkonce.this_module"); |
3264d3f9d module: add load_... |
2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 |
if (!info->index.mod) { printk(KERN_WARNING "No module found in object "); return ERR_PTR(-ENOEXEC); } /* This is temporary: point mod into copy of data. */ mod = (void *)info->sechdrs[info->index.mod].sh_addr; if (info->index.sym == 0) { printk(KERN_WARNING "%s: module has no symbols (stripped?) ", mod->name); return ERR_PTR(-ENOEXEC); } |
49668688d module: pass load... |
2407 |
info->index.pcpu = find_pcpusec(info); |
3264d3f9d module: add load_... |
2408 |
|
3264d3f9d module: add load_... |
2409 2410 2411 2412 2413 |
/* Check module struct version now, before we try to use module. */ if (!check_modstruct_version(info->sechdrs, info->index.vers, mod)) return ERR_PTR(-ENOEXEC); return mod; |
3264d3f9d module: add load_... |
2414 |
} |
49668688d module: pass load... |
2415 |
static int check_modinfo(struct module *mod, struct load_info *info) |
40dd2560e module: refactor ... |
2416 |
{ |
49668688d module: pass load... |
2417 |
const char *modmagic = get_modinfo(info, "vermagic"); |
40dd2560e module: refactor ... |
2418 2419 2420 2421 2422 2423 2424 |
int err; /* This is allowed: modprobe --force will invalidate it. */ if (!modmagic) { err = try_to_force_load(mod, "bad vermagic"); if (err) return err; |
49668688d module: pass load... |
2425 |
} else if (!same_magic(modmagic, vermagic, info->index.vers)) { |
40dd2560e module: refactor ... |
2426 2427 2428 2429 2430 |
printk(KERN_ERR "%s: version magic '%s' should be '%s' ", mod->name, modmagic, vermagic); return -ENOEXEC; } |
2449b8ba0 module,bug: Add T... |
2431 2432 |
if (!get_modinfo(info, "intree")) add_taint_module(mod, TAINT_OOT_MODULE); |
49668688d module: pass load... |
2433 |
if (get_modinfo(info, "staging")) { |
40dd2560e module: refactor ... |
2434 2435 2436 2437 2438 2439 |
add_taint_module(mod, TAINT_CRAP); printk(KERN_WARNING "%s: module is from the staging directory," " the quality is unknown, you have been warned. ", mod->name); } |
22e268ebe module: refactor ... |
2440 2441 |
/* Set up license info based on the info section */ |
49668688d module: pass load... |
2442 |
set_license(mod, get_modinfo(info, "license")); |
22e268ebe module: refactor ... |
2443 |
|
40dd2560e module: refactor ... |
2444 2445 |
return 0; } |
811d66a0e module: group pos... |
2446 |
static void find_module_sections(struct module *mod, struct load_info *info) |
f91a13bb9 module: refactor ... |
2447 |
{ |
49668688d module: pass load... |
2448 |
mod->kp = section_objs(info, "__param", |
f91a13bb9 module: refactor ... |
2449 |
sizeof(*mod->kp), &mod->num_kp); |
49668688d module: pass load... |
2450 |
mod->syms = section_objs(info, "__ksymtab", |
f91a13bb9 module: refactor ... |
2451 |
sizeof(*mod->syms), &mod->num_syms); |
49668688d module: pass load... |
2452 2453 |
mod->crcs = section_addr(info, "__kcrctab"); mod->gpl_syms = section_objs(info, "__ksymtab_gpl", |
f91a13bb9 module: refactor ... |
2454 2455 |
sizeof(*mod->gpl_syms), &mod->num_gpl_syms); |
49668688d module: pass load... |
2456 2457 |
mod->gpl_crcs = section_addr(info, "__kcrctab_gpl"); mod->gpl_future_syms = section_objs(info, |
f91a13bb9 module: refactor ... |
2458 2459 2460 |
"__ksymtab_gpl_future", sizeof(*mod->gpl_future_syms), &mod->num_gpl_future_syms); |
49668688d module: pass load... |
2461 |
mod->gpl_future_crcs = section_addr(info, "__kcrctab_gpl_future"); |
f91a13bb9 module: refactor ... |
2462 2463 |
#ifdef CONFIG_UNUSED_SYMBOLS |
49668688d module: pass load... |
2464 |
mod->unused_syms = section_objs(info, "__ksymtab_unused", |
f91a13bb9 module: refactor ... |
2465 2466 |
sizeof(*mod->unused_syms), &mod->num_unused_syms); |
49668688d module: pass load... |
2467 2468 |
mod->unused_crcs = section_addr(info, "__kcrctab_unused"); mod->unused_gpl_syms = section_objs(info, "__ksymtab_unused_gpl", |
f91a13bb9 module: refactor ... |
2469 2470 |
sizeof(*mod->unused_gpl_syms), &mod->num_unused_gpl_syms); |
49668688d module: pass load... |
2471 |
mod->unused_gpl_crcs = section_addr(info, "__kcrctab_unused_gpl"); |
f91a13bb9 module: refactor ... |
2472 2473 |
#endif #ifdef CONFIG_CONSTRUCTORS |
49668688d module: pass load... |
2474 |
mod->ctors = section_objs(info, ".ctors", |
f91a13bb9 module: refactor ... |
2475 2476 2477 2478 |
sizeof(*mod->ctors), &mod->num_ctors); #endif #ifdef CONFIG_TRACEPOINTS |
654986462 tracepoints: Fix ... |
2479 2480 2481 |
mod->tracepoints_ptrs = section_objs(info, "__tracepoints_ptrs", sizeof(*mod->tracepoints_ptrs), &mod->num_tracepoints); |
f91a13bb9 module: refactor ... |
2482 |
#endif |
bf5438fca jump label: Base ... |
2483 2484 2485 2486 2487 |
#ifdef HAVE_JUMP_LABEL mod->jump_entries = section_objs(info, "__jump_table", sizeof(*mod->jump_entries), &mod->num_jump_entries); #endif |
f91a13bb9 module: refactor ... |
2488 |
#ifdef CONFIG_EVENT_TRACING |
49668688d module: pass load... |
2489 |
mod->trace_events = section_objs(info, "_ftrace_events", |
f91a13bb9 module: refactor ... |
2490 2491 2492 2493 2494 2495 2496 2497 2498 |
sizeof(*mod->trace_events), &mod->num_trace_events); /* * This section contains pointers to allocated objects in the trace * code and not scanning it leads to false positives. */ kmemleak_scan_area(mod->trace_events, sizeof(*mod->trace_events) * mod->num_trace_events, GFP_KERNEL); #endif |
13b9b6e74 tracing: Fix modu... |
2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 |
#ifdef CONFIG_TRACING mod->trace_bprintk_fmt_start = section_objs(info, "__trace_printk_fmt", sizeof(*mod->trace_bprintk_fmt_start), &mod->num_trace_bprintk_fmt); /* * This section contains pointers to allocated objects in the trace * code and not scanning it leads to false positives. */ kmemleak_scan_area(mod->trace_bprintk_fmt_start, sizeof(*mod->trace_bprintk_fmt_start) * mod->num_trace_bprintk_fmt, GFP_KERNEL); #endif |
f91a13bb9 module: refactor ... |
2511 2512 |
#ifdef CONFIG_FTRACE_MCOUNT_RECORD /* sechdrs[0].sh_size is always zero */ |
49668688d module: pass load... |
2513 |
mod->ftrace_callsites = section_objs(info, "__mcount_loc", |
f91a13bb9 module: refactor ... |
2514 2515 2516 |
sizeof(*mod->ftrace_callsites), &mod->num_ftrace_callsites); #endif |
22e268ebe module: refactor ... |
2517 |
|
811d66a0e module: group pos... |
2518 2519 |
mod->extable = section_objs(info, "__ex_table", sizeof(*mod->extable), &mod->num_exentries); |
49668688d module: pass load... |
2520 |
if (section_addr(info, "__obsparm")) |
22e268ebe module: refactor ... |
2521 2522 2523 |
printk(KERN_WARNING "%s: Ignoring obsolete parameters ", mod->name); |
811d66a0e module: group pos... |
2524 2525 2526 |
info->debug = section_objs(info, "__verbose", sizeof(*info->debug), &info->num_debug); |
f91a13bb9 module: refactor ... |
2527 |
} |
49668688d module: pass load... |
2528 |
static int move_module(struct module *mod, struct load_info *info) |
65b8a9b4d module: refactor ... |
2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 |
{ int i; void *ptr; /* Do the allocs. */ ptr = module_alloc_update_bounds(mod->core_size); /* * The pointer to this block is stored in the module structure * which is inside the block. Just mark it as not being a * leak. */ kmemleak_not_leak(ptr); if (!ptr) |
d913188c7 module: layout_an... |
2542 |
return -ENOMEM; |
65b8a9b4d module: refactor ... |
2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 |
memset(ptr, 0, mod->core_size); mod->module_core = ptr; ptr = module_alloc_update_bounds(mod->init_size); /* * The pointer to this block is stored in the module structure * which is inside the block. This block doesn't need to be * scanned as it contains data and code that will be freed * after the module is initialized. */ kmemleak_ignore(ptr); if (!ptr && mod->init_size) { module_free(mod, mod->module_core); |
d913188c7 module: layout_an... |
2557 |
return -ENOMEM; |
65b8a9b4d module: refactor ... |
2558 2559 2560 2561 2562 |
} memset(ptr, 0, mod->init_size); mod->module_init = ptr; /* Transfer each section which specifies SHF_ALLOC */ |
5e1241692 module: replace D... |
2563 2564 |
pr_debug("final section addresses: "); |
49668688d module: pass load... |
2565 |
for (i = 0; i < info->hdr->e_shnum; i++) { |
65b8a9b4d module: refactor ... |
2566 |
void *dest; |
49668688d module: pass load... |
2567 |
Elf_Shdr *shdr = &info->sechdrs[i]; |
65b8a9b4d module: refactor ... |
2568 |
|
49668688d module: pass load... |
2569 |
if (!(shdr->sh_flags & SHF_ALLOC)) |
65b8a9b4d module: refactor ... |
2570 |
continue; |
49668688d module: pass load... |
2571 |
if (shdr->sh_entsize & INIT_OFFSET_MASK) |
65b8a9b4d module: refactor ... |
2572 |
dest = mod->module_init |
49668688d module: pass load... |
2573 |
+ (shdr->sh_entsize & ~INIT_OFFSET_MASK); |
65b8a9b4d module: refactor ... |
2574 |
else |
49668688d module: pass load... |
2575 |
dest = mod->module_core + shdr->sh_entsize; |
65b8a9b4d module: refactor ... |
2576 |
|
49668688d module: pass load... |
2577 2578 |
if (shdr->sh_type != SHT_NOBITS) memcpy(dest, (void *)shdr->sh_addr, shdr->sh_size); |
65b8a9b4d module: refactor ... |
2579 |
/* Update sh_addr to point to copy in image. */ |
49668688d module: pass load... |
2580 |
shdr->sh_addr = (unsigned long)dest; |
5e1241692 module: replace D... |
2581 2582 2583 |
pr_debug("\t0x%lx %s ", (long)shdr->sh_addr, info->secstrings + shdr->sh_name); |
65b8a9b4d module: refactor ... |
2584 |
} |
d913188c7 module: layout_an... |
2585 2586 |
return 0; |
65b8a9b4d module: refactor ... |
2587 |
} |
49668688d module: pass load... |
2588 |
static int check_module_license_and_versions(struct module *mod) |
22e268ebe module: refactor ... |
2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 |
{ /* * ndiswrapper is under GPL by itself, but loads proprietary modules. * Don't use add_taint_module(), as it would prevent ndiswrapper from * using GPL-only symbols it needs. */ if (strcmp(mod->name, "ndiswrapper") == 0) add_taint(TAINT_PROPRIETARY_MODULE); /* driverloader was caught wrongly pretending to be under GPL */ if (strcmp(mod->name, "driverloader") == 0) add_taint_module(mod, TAINT_PROPRIETARY_MODULE); #ifdef CONFIG_MODVERSIONS if ((mod->num_syms && !mod->crcs) || (mod->num_gpl_syms && !mod->gpl_crcs) || (mod->num_gpl_future_syms && !mod->gpl_future_crcs) #ifdef CONFIG_UNUSED_SYMBOLS || (mod->num_unused_syms && !mod->unused_crcs) || (mod->num_unused_gpl_syms && !mod->unused_gpl_crcs) #endif ) { return try_to_force_load(mod, "no versions for exported symbols"); } #endif return 0; } static void flush_module_icache(const struct module *mod) { mm_segment_t old_fs; /* flush the icache in correct context */ old_fs = get_fs(); set_fs(KERNEL_DS); /* * Flush the instruction cache, since we've played with text. * Do it before processing of module parameters, so the module * can provide parameter accessor functions of its own. */ if (mod->module_init) flush_icache_range((unsigned long)mod->module_init, (unsigned long)mod->module_init + mod->init_size); flush_icache_range((unsigned long)mod->module_core, (unsigned long)mod->module_core + mod->core_size); set_fs(old_fs); } |
74e08fcf7 modules: add defa... |
2640 2641 2642 2643 2644 2645 2646 |
int __weak module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs, char *secstrings, struct module *mod) { return 0; } |
d913188c7 module: layout_an... |
2647 |
static struct module *layout_and_allocate(struct load_info *info) |
1da177e4c Linux-2.6.12-rc2 |
2648 |
{ |
d913188c7 module: layout_an... |
2649 |
/* Module within temporary copy. */ |
1da177e4c Linux-2.6.12-rc2 |
2650 |
struct module *mod; |
49668688d module: pass load... |
2651 |
Elf_Shdr *pcpusec; |
d913188c7 module: layout_an... |
2652 |
int err; |
3ae91c21d module: fix up CO... |
2653 |
|
d913188c7 module: layout_an... |
2654 2655 2656 |
mod = setup_load_info(info); if (IS_ERR(mod)) return mod; |
1da177e4c Linux-2.6.12-rc2 |
2657 |
|
49668688d module: pass load... |
2658 |
err = check_modinfo(mod, info); |
40dd2560e module: refactor ... |
2659 2660 |
if (err) return ERR_PTR(err); |
1da177e4c Linux-2.6.12-rc2 |
2661 |
|
1da177e4c Linux-2.6.12-rc2 |
2662 |
/* Allow arches to frob section contents and sizes. */ |
49668688d module: pass load... |
2663 2664 |
err = module_frob_arch_sections(info->hdr, info->sechdrs, info->secstrings, mod); |
1da177e4c Linux-2.6.12-rc2 |
2665 |
if (err < 0) |
6526c534b module: move modu... |
2666 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
2667 |
|
49668688d module: pass load... |
2668 2669 |
pcpusec = &info->sechdrs[info->index.pcpu]; if (pcpusec->sh_size) { |
1da177e4c Linux-2.6.12-rc2 |
2670 |
/* We have a special allocation for this section. */ |
49668688d module: pass load... |
2671 2672 |
err = percpu_modalloc(mod, pcpusec->sh_size, pcpusec->sh_addralign); |
259354dea module: encapsula... |
2673 |
if (err) |
6526c534b module: move modu... |
2674 |
goto out; |
49668688d module: pass load... |
2675 |
pcpusec->sh_flags &= ~(unsigned long)SHF_ALLOC; |
1da177e4c Linux-2.6.12-rc2 |
2676 2677 2678 2679 2680 |
} /* Determine total sizes, and put offsets in sh_entsize. For now this is done generically; there doesn't appear to be any special cases for the architectures. */ |
49668688d module: pass load... |
2681 |
layout_sections(mod, info); |
49668688d module: pass load... |
2682 |
layout_symtab(mod, info); |
1da177e4c Linux-2.6.12-rc2 |
2683 |
|
65b8a9b4d module: refactor ... |
2684 |
/* Allocate and move to the final place */ |
49668688d module: pass load... |
2685 |
err = move_module(mod, info); |
d913188c7 module: layout_an... |
2686 |
if (err) |
48fd11880 module: Fix perfo... |
2687 |
goto free_percpu; |
d913188c7 module: layout_an... |
2688 2689 2690 |
/* Module has been copied to its final place now: return it. */ mod = (void *)info->sechdrs[info->index.mod].sh_addr; |
49668688d module: pass load... |
2691 |
kmemleak_load_module(mod, info); |
d913188c7 module: layout_an... |
2692 |
return mod; |
d913188c7 module: layout_an... |
2693 2694 |
free_percpu: percpu_modfree(mod); |
6526c534b module: move modu... |
2695 |
out: |
d913188c7 module: layout_an... |
2696 2697 2698 2699 2700 2701 |
return ERR_PTR(err); } /* mod is no longer valid after this! */ static void module_deallocate(struct module *mod, struct load_info *info) { |
d913188c7 module: layout_an... |
2702 2703 2704 2705 |
percpu_modfree(mod); module_free(mod, mod->module_init); module_free(mod, mod->module_core); } |
74e08fcf7 modules: add defa... |
2706 2707 2708 2709 2710 2711 |
int __weak module_finalize(const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs, struct module *me) { return 0; } |
811d66a0e module: group pos... |
2712 2713 |
static int post_relocation(struct module *mod, const struct load_info *info) { |
51f3d0f47 module: cleanup c... |
2714 |
/* Sort exception table now relocations are done. */ |
811d66a0e module: group pos... |
2715 2716 2717 2718 2719 |
sort_extable(mod->extable, mod->extable + mod->num_exentries); /* Copy relocated percpu area over. */ percpu_modcopy(mod, (void *)info->sechdrs[info->index.pcpu].sh_addr, info->sechdrs[info->index.pcpu].sh_size); |
51f3d0f47 module: cleanup c... |
2720 |
/* Setup kallsyms-specific fields. */ |
811d66a0e module: group pos... |
2721 2722 2723 2724 2725 |
add_kallsyms(mod, info); /* Arch-specific module finalizing. */ return module_finalize(info->hdr, info->sechdrs, mod); } |
d913188c7 module: layout_an... |
2726 2727 |
/* Allocate and load the module: note that size of section 0 is always zero, and we rely on this for optional sections. */ |
51f3d0f47 module: cleanup c... |
2728 |
static struct module *load_module(void __user *umod, |
d913188c7 module: layout_an... |
2729 2730 2731 2732 2733 2734 |
unsigned long len, const char __user *uargs) { struct load_info info = { NULL, }; struct module *mod; long err; |
d913188c7 module: layout_an... |
2735 |
|
5e1241692 module: replace D... |
2736 2737 |
pr_debug("load_module: umod=%p, len=%lu, uargs=%p ", |
d913188c7 module: layout_an... |
2738 2739 2740 2741 2742 2743 2744 2745 2746 |
umod, len, uargs); /* Copy in the blobs from userspace, check they are vaguely sane. */ err = copy_and_check(&info, umod, len, uargs); if (err) return ERR_PTR(err); /* Figure out module layout, and allocate all the memory. */ mod = layout_and_allocate(&info); |
65b8a9b4d module: refactor ... |
2747 2748 |
if (IS_ERR(mod)) { err = PTR_ERR(mod); |
d913188c7 module: layout_an... |
2749 |
goto free_copy; |
1da177e4c Linux-2.6.12-rc2 |
2750 |
} |
1da177e4c Linux-2.6.12-rc2 |
2751 |
|
49668688d module: pass load... |
2752 |
/* Now module is in final location, initialize linked lists, etc. */ |
9f85a4bbb module: refactor ... |
2753 2754 |
err = module_unload_init(mod); if (err) |
d913188c7 module: layout_an... |
2755 |
goto free_module; |
1da177e4c Linux-2.6.12-rc2 |
2756 |
|
22e268ebe module: refactor ... |
2757 2758 |
/* Now we've got everything in the final locations, we can * find optional sections. */ |
49668688d module: pass load... |
2759 |
find_module_sections(mod, &info); |
9b37ccfc6 module: allow ndi... |
2760 |
|
49668688d module: pass load... |
2761 |
err = check_module_license_and_versions(mod); |
22e268ebe module: refactor ... |
2762 2763 |
if (err) goto free_unload; |
9841d61d7 [PATCH] Add taint... |
2764 |
|
c988d2b28 [PATCH] modules: ... |
2765 |
/* Set up MODINFO_ATTR fields */ |
49668688d module: pass load... |
2766 |
setup_modinfo(mod, &info); |
c988d2b28 [PATCH] modules: ... |
2767 |
|
1da177e4c Linux-2.6.12-rc2 |
2768 |
/* Fix up syms, so that st_value is a pointer to location. */ |
49668688d module: pass load... |
2769 |
err = simplify_symbols(mod, &info); |
1da177e4c Linux-2.6.12-rc2 |
2770 |
if (err < 0) |
d913188c7 module: layout_an... |
2771 |
goto free_modinfo; |
1da177e4c Linux-2.6.12-rc2 |
2772 |
|
49668688d module: pass load... |
2773 |
err = apply_relocations(mod, &info); |
22e268ebe module: refactor ... |
2774 |
if (err < 0) |
d913188c7 module: layout_an... |
2775 |
goto free_modinfo; |
1da177e4c Linux-2.6.12-rc2 |
2776 |
|
811d66a0e module: group pos... |
2777 |
err = post_relocation(mod, &info); |
1da177e4c Linux-2.6.12-rc2 |
2778 |
if (err < 0) |
d913188c7 module: layout_an... |
2779 |
goto free_modinfo; |
1da177e4c Linux-2.6.12-rc2 |
2780 |
|
22e268ebe module: refactor ... |
2781 |
flush_module_icache(mod); |
378bac820 [PATCH] flush ica... |
2782 |
|
6526c534b module: move modu... |
2783 2784 2785 2786 2787 2788 |
/* Now copy in args */ mod->args = strndup_user(uargs, ~0UL >> 1); if (IS_ERR(mod->args)) { err = PTR_ERR(mod->args); goto free_arch_cleanup; } |
8d3b33f67 [PATCH] Remove MO... |
2789 |
|
51f3d0f47 module: cleanup c... |
2790 |
/* Mark state as coming so strong_try_module_get() ignores us. */ |
d913188c7 module: layout_an... |
2791 |
mod->state = MODULE_STATE_COMING; |
bb9d3d56e module: better OO... |
2792 |
/* Now sew it into the lists so we can get lockdep and oops |
25985edce Fix common misspe... |
2793 |
* info during argument parsing. No one should access us, since |
d72b37513 Remove stop_machi... |
2794 2795 2796 2797 2798 |
* strong_try_module_get() will fail. * lockdep/oops can run asynchronous, so use the RCU list insertion * function to insert in a way safe to concurrent readers. * The mutex protects against concurrent writers. */ |
75676500f module: make lock... |
2799 |
mutex_lock(&module_mutex); |
3bafeb624 module: move find... |
2800 2801 |
if (find_module(mod->name)) { err = -EEXIST; |
be593f4ce module: verify_ex... |
2802 |
goto unlock; |
3bafeb624 module: move find... |
2803 |
} |
811d66a0e module: group pos... |
2804 |
/* This has to be done once we're sure module name is unique. */ |
1cd0d6c30 module: Enable dy... |
2805 |
dynamic_debug_setup(info.debug, info.num_debug); |
ff49d74ad module: initializ... |
2806 |
|
be593f4ce module: verify_ex... |
2807 2808 2809 |
/* Find duplicate symbols */ err = verify_export_symbols(mod); if (err < 0) |
ff49d74ad module: initializ... |
2810 |
goto ddebug; |
be593f4ce module: verify_ex... |
2811 |
|
5336377d6 modules: Fix modu... |
2812 |
module_bug_finalize(info.hdr, info.sechdrs, mod); |
d72b37513 Remove stop_machi... |
2813 |
list_add_rcu(&mod->list, &modules); |
75676500f module: make lock... |
2814 |
mutex_unlock(&module_mutex); |
bb9d3d56e module: better OO... |
2815 |
|
51f3d0f47 module: cleanup c... |
2816 |
/* Module is ready to execute: parsing args may do that. */ |
e180a6b77 param: fix charp ... |
2817 |
err = parse_args(mod->name, mod->args, mod->kp, mod->num_kp, NULL); |
1da177e4c Linux-2.6.12-rc2 |
2818 |
if (err < 0) |
bb9d3d56e module: better OO... |
2819 |
goto unlink; |
1da177e4c Linux-2.6.12-rc2 |
2820 |
|
51f3d0f47 module: cleanup c... |
2821 |
/* Link in to syfs. */ |
8f6d03781 module: sysfs cle... |
2822 |
err = mod_sysfs_setup(mod, &info, mod->kp, mod->num_kp); |
1da177e4c Linux-2.6.12-rc2 |
2823 |
if (err < 0) |
bb9d3d56e module: better OO... |
2824 |
goto unlink; |
80a3d1bb4 module: move sysf... |
2825 |
|
48fd11880 module: Fix perfo... |
2826 |
/* Get rid of temporary copy. */ |
d913188c7 module: layout_an... |
2827 |
free_copy(&info); |
1da177e4c Linux-2.6.12-rc2 |
2828 2829 |
/* Done! */ |
51f3d0f47 module: cleanup c... |
2830 |
trace_module_load(mod); |
1da177e4c Linux-2.6.12-rc2 |
2831 |
return mod; |
bb9d3d56e module: better OO... |
2832 |
unlink: |
75676500f module: make lock... |
2833 |
mutex_lock(&module_mutex); |
e91defa26 module: don't use... |
2834 2835 |
/* Unlink carefully: kallsyms could be walking list. */ list_del_rcu(&mod->list); |
5336377d6 modules: Fix modu... |
2836 |
module_bug_cleanup(mod); |
ff49d74ad module: initializ... |
2837 |
ddebug: |
1cd0d6c30 module: Enable dy... |
2838 |
dynamic_debug_remove(info.debug); |
be593f4ce module: verify_ex... |
2839 |
unlock: |
75676500f module: make lock... |
2840 |
mutex_unlock(&module_mutex); |
e91defa26 module: don't use... |
2841 |
synchronize_sched(); |
6526c534b module: move modu... |
2842 2843 |
kfree(mod->args); free_arch_cleanup: |
1da177e4c Linux-2.6.12-rc2 |
2844 |
module_arch_cleanup(mod); |
d913188c7 module: layout_an... |
2845 |
free_modinfo: |
a263f7763 module: fix memor... |
2846 |
free_modinfo(mod); |
22e268ebe module: refactor ... |
2847 |
free_unload: |
1da177e4c Linux-2.6.12-rc2 |
2848 |
module_unload_free(mod); |
d913188c7 module: layout_an... |
2849 2850 2851 2852 |
free_module: module_deallocate(mod, &info); free_copy: free_copy(&info); |
6fe2e70bb [PATCH] kernel/mo... |
2853 |
return ERR_PTR(err); |
1da177e4c Linux-2.6.12-rc2 |
2854 |
} |
b99b87f70 kernel: construct... |
2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 |
/* Call module constructors. */ static void do_mod_ctors(struct module *mod) { #ifdef CONFIG_CONSTRUCTORS unsigned long i; for (i = 0; i < mod->num_ctors; i++) mod->ctors[i](); #endif } |
1da177e4c Linux-2.6.12-rc2 |
2865 |
/* This is where the real work happens */ |
17da2bd90 [CVE-2009-0029] S... |
2866 2867 |
SYSCALL_DEFINE3(init_module, void __user *, umod, unsigned long, len, const char __user *, uargs) |
1da177e4c Linux-2.6.12-rc2 |
2868 2869 2870 2871 2872 |
{ struct module *mod; int ret = 0; /* Must have permission */ |
3d43321b7 modules: sysctl t... |
2873 |
if (!capable(CAP_SYS_MODULE) || modules_disabled) |
1da177e4c Linux-2.6.12-rc2 |
2874 |
return -EPERM; |
1da177e4c Linux-2.6.12-rc2 |
2875 2876 |
/* Do all the hard work */ mod = load_module(umod, len, uargs); |
75676500f module: make lock... |
2877 |
if (IS_ERR(mod)) |
1da177e4c Linux-2.6.12-rc2 |
2878 |
return PTR_ERR(mod); |
1da177e4c Linux-2.6.12-rc2 |
2879 |
|
e041c6834 [PATCH] Notifier ... |
2880 2881 |
blocking_notifier_call_chain(&module_notify_list, MODULE_STATE_COMING, mod); |
1da177e4c Linux-2.6.12-rc2 |
2882 |
|
94462ad3b module: Move RO/N... |
2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 |
/* Set RO and NX regions for core */ set_section_ro_nx(mod->module_core, mod->core_text_size, mod->core_ro_size, mod->core_size); /* Set RO and NX regions for init */ set_section_ro_nx(mod->module_init, mod->init_text_size, mod->init_ro_size, mod->init_size); |
b99b87f70 kernel: construct... |
2894 |
do_mod_ctors(mod); |
1da177e4c Linux-2.6.12-rc2 |
2895 2896 |
/* Start the module */ if (mod->init != NULL) |
59f9415ff modules: extend i... |
2897 |
ret = do_one_initcall(mod->init); |
1da177e4c Linux-2.6.12-rc2 |
2898 2899 2900 2901 |
if (ret < 0) { /* Init routine failed: abort. Try to protect us from buggy refcounters. */ mod->state = MODULE_STATE_GOING; |
fbd568a3e [PATCH] Change sy... |
2902 |
synchronize_sched(); |
af49d9248 Remove "unsafe" f... |
2903 |
module_put(mod); |
df4b565e1 module: add MODUL... |
2904 2905 |
blocking_notifier_call_chain(&module_notify_list, MODULE_STATE_GOING, mod); |
af49d9248 Remove "unsafe" f... |
2906 |
free_module(mod); |
c9a3ba55b module: wait for ... |
2907 |
wake_up(&module_wq); |
1da177e4c Linux-2.6.12-rc2 |
2908 2909 |
return ret; } |
e24e2e64c modules: warn abo... |
2910 |
if (ret > 0) { |
ad361c988 Remove multiple K... |
2911 2912 2913 2914 2915 |
printk(KERN_WARNING "%s: '%s'->init suspiciously returned %d, it should follow 0/-E convention " "%s: loading module anyway... ", |
e24e2e64c modules: warn abo... |
2916 2917 2918 2919 |
__func__, mod->name, ret, __func__); dump_stack(); } |
1da177e4c Linux-2.6.12-rc2 |
2920 |
|
6c5db22d2 modules: fix modu... |
2921 |
/* Now it's a first class citizen! Wake up anyone waiting for it. */ |
1da177e4c Linux-2.6.12-rc2 |
2922 |
mod->state = MODULE_STATE_LIVE; |
6c5db22d2 modules: fix modu... |
2923 |
wake_up(&module_wq); |
0deddf436 module: add MODUL... |
2924 2925 |
blocking_notifier_call_chain(&module_notify_list, MODULE_STATE_LIVE, mod); |
6c5db22d2 modules: fix modu... |
2926 |
|
d6de2c80e async: Fix module... |
2927 2928 |
/* We need to finish all async code before the module init sequence is done */ async_synchronize_full(); |
6c5db22d2 modules: fix modu... |
2929 |
mutex_lock(&module_mutex); |
1da177e4c Linux-2.6.12-rc2 |
2930 2931 |
/* Drop initial reference. */ module_put(mod); |
ad6561dff module: trim exce... |
2932 |
trim_init_extable(mod); |
4a4962263 module: reduce sy... |
2933 2934 2935 |
#ifdef CONFIG_KALLSYMS mod->num_symtab = mod->core_num_syms; mod->symtab = mod->core_symtab; |
554bdfe5a module: reduce st... |
2936 |
mod->strtab = mod->core_strtab; |
4a4962263 module: reduce sy... |
2937 |
#endif |
01526ed08 module: split uns... |
2938 |
unset_module_init_ro_nx(mod); |
1da177e4c Linux-2.6.12-rc2 |
2939 2940 2941 |
module_free(mod, mod->module_init); mod->module_init = NULL; mod->init_size = 0; |
4d10380e7 module: zero mod-... |
2942 |
mod->init_ro_size = 0; |
1da177e4c Linux-2.6.12-rc2 |
2943 |
mod->init_text_size = 0; |
6389a3851 [PATCH] kernel/mo... |
2944 |
mutex_unlock(&module_mutex); |
1da177e4c Linux-2.6.12-rc2 |
2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 |
return 0; } static inline int within(unsigned long addr, void *start, unsigned long size) { return ((void *)addr >= start && (void *)addr < start + size); } #ifdef CONFIG_KALLSYMS /* * This ignores the intensely annoying "mapping symbols" found * in ARM ELF files: $a, $t and $d. */ static inline int is_arm_mapping_symbol(const char *str) { |
22a8bdeb5 whitespace fixes:... |
2961 |
return str[0] == '$' && strchr("atd", str[1]) |
1da177e4c Linux-2.6.12-rc2 |
2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 |
&& (str[2] == '\0' || str[2] == '.'); } static const char *get_ksymbol(struct module *mod, unsigned long addr, unsigned long *size, unsigned long *offset) { unsigned int i, best = 0; unsigned long nextval; /* At worse, next value is at end of module */ |
a06f6211e module: add withi... |
2974 |
if (within_module_init(addr, mod)) |
1da177e4c Linux-2.6.12-rc2 |
2975 |
nextval = (unsigned long)mod->module_init+mod->init_text_size; |
22a8bdeb5 whitespace fixes:... |
2976 |
else |
1da177e4c Linux-2.6.12-rc2 |
2977 |
nextval = (unsigned long)mod->module_core+mod->core_text_size; |
25985edce Fix common misspe... |
2978 |
/* Scan for closest preceding symbol, and next symbol. (ELF |
22a8bdeb5 whitespace fixes:... |
2979 |
starts real symbols at 1). */ |
1da177e4c Linux-2.6.12-rc2 |
2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 |
for (i = 1; i < mod->num_symtab; i++) { if (mod->symtab[i].st_shndx == SHN_UNDEF) continue; /* We ignore unnamed symbols: they're uninformative * and inserted at a whim. */ if (mod->symtab[i].st_value <= addr && mod->symtab[i].st_value > mod->symtab[best].st_value && *(mod->strtab + mod->symtab[i].st_name) != '\0' && !is_arm_mapping_symbol(mod->strtab + mod->symtab[i].st_name)) best = i; if (mod->symtab[i].st_value > addr && mod->symtab[i].st_value < nextval && *(mod->strtab + mod->symtab[i].st_name) != '\0' && !is_arm_mapping_symbol(mod->strtab + mod->symtab[i].st_name)) nextval = mod->symtab[i].st_value; } if (!best) return NULL; |
ffb451227 Simplify kallsyms... |
3000 3001 3002 3003 |
if (size) *size = nextval - mod->symtab[best].st_value; if (offset) *offset = addr - mod->symtab[best].st_value; |
1da177e4c Linux-2.6.12-rc2 |
3004 3005 |
return mod->strtab + mod->symtab[best].st_name; } |
6dd06c9fb module: make modu... |
3006 3007 |
/* For kallsyms to ask for address resolution. NULL means not found. Careful * not to lock to avoid deadlock on oopses, simply disable preemption. */ |
92dfc9dc7 fix "modules: mak... |
3008 |
const char *module_address_lookup(unsigned long addr, |
6dd06c9fb module: make modu... |
3009 3010 3011 3012 |
unsigned long *size, unsigned long *offset, char **modname, char *namebuf) |
1da177e4c Linux-2.6.12-rc2 |
3013 3014 |
{ struct module *mod; |
cb2a52052 modules: de-mutex... |
3015 |
const char *ret = NULL; |
1da177e4c Linux-2.6.12-rc2 |
3016 |
|
cb2a52052 modules: de-mutex... |
3017 |
preempt_disable(); |
d72b37513 Remove stop_machi... |
3018 |
list_for_each_entry_rcu(mod, &modules, list) { |
a06f6211e module: add withi... |
3019 3020 |
if (within_module_init(addr, mod) || within_module_core(addr, mod)) { |
ffc508919 [PATCH] Create ka... |
3021 3022 |
if (modname) *modname = mod->name; |
cb2a52052 modules: de-mutex... |
3023 3024 |
ret = get_ksymbol(mod, addr, size, offset); break; |
1da177e4c Linux-2.6.12-rc2 |
3025 3026 |
} } |
6dd06c9fb module: make modu... |
3027 3028 3029 3030 3031 |
/* Make a copy in here where it's safe */ if (ret) { strncpy(namebuf, ret, KSYM_NAME_LEN - 1); ret = namebuf; } |
cb2a52052 modules: de-mutex... |
3032 |
preempt_enable(); |
92dfc9dc7 fix "modules: mak... |
3033 |
return ret; |
1da177e4c Linux-2.6.12-rc2 |
3034 |
} |
9d65cb4a1 Fix race between ... |
3035 3036 3037 |
int lookup_module_symbol_name(unsigned long addr, char *symname) { struct module *mod; |
cb2a52052 modules: de-mutex... |
3038 |
preempt_disable(); |
d72b37513 Remove stop_machi... |
3039 |
list_for_each_entry_rcu(mod, &modules, list) { |
a06f6211e module: add withi... |
3040 3041 |
if (within_module_init(addr, mod) || within_module_core(addr, mod)) { |
9d65cb4a1 Fix race between ... |
3042 3043 3044 3045 3046 |
const char *sym; sym = get_ksymbol(mod, addr, NULL, NULL); if (!sym) goto out; |
9281acea6 kallsyms: make KS... |
3047 |
strlcpy(symname, sym, KSYM_NAME_LEN); |
cb2a52052 modules: de-mutex... |
3048 |
preempt_enable(); |
9d65cb4a1 Fix race between ... |
3049 3050 3051 3052 |
return 0; } } out: |
cb2a52052 modules: de-mutex... |
3053 |
preempt_enable(); |
9d65cb4a1 Fix race between ... |
3054 3055 |
return -ERANGE; } |
a5c43dae7 Fix race between ... |
3056 3057 3058 3059 |
int lookup_module_symbol_attrs(unsigned long addr, unsigned long *size, unsigned long *offset, char *modname, char *name) { struct module *mod; |
cb2a52052 modules: de-mutex... |
3060 |
preempt_disable(); |
d72b37513 Remove stop_machi... |
3061 |
list_for_each_entry_rcu(mod, &modules, list) { |
a06f6211e module: add withi... |
3062 3063 |
if (within_module_init(addr, mod) || within_module_core(addr, mod)) { |
a5c43dae7 Fix race between ... |
3064 3065 3066 3067 3068 3069 |
const char *sym; sym = get_ksymbol(mod, addr, size, offset); if (!sym) goto out; if (modname) |
9281acea6 kallsyms: make KS... |
3070 |
strlcpy(modname, mod->name, MODULE_NAME_LEN); |
a5c43dae7 Fix race between ... |
3071 |
if (name) |
9281acea6 kallsyms: make KS... |
3072 |
strlcpy(name, sym, KSYM_NAME_LEN); |
cb2a52052 modules: de-mutex... |
3073 |
preempt_enable(); |
a5c43dae7 Fix race between ... |
3074 3075 3076 3077 |
return 0; } } out: |
cb2a52052 modules: de-mutex... |
3078 |
preempt_enable(); |
a5c43dae7 Fix race between ... |
3079 3080 |
return -ERANGE; } |
ea07890a6 Fix race between ... |
3081 3082 |
int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type, char *name, char *module_name, int *exported) |
1da177e4c Linux-2.6.12-rc2 |
3083 3084 |
{ struct module *mod; |
cb2a52052 modules: de-mutex... |
3085 |
preempt_disable(); |
d72b37513 Remove stop_machi... |
3086 |
list_for_each_entry_rcu(mod, &modules, list) { |
1da177e4c Linux-2.6.12-rc2 |
3087 3088 3089 |
if (symnum < mod->num_symtab) { *value = mod->symtab[symnum].st_value; *type = mod->symtab[symnum].st_info; |
098c5eea0 [PATCH] null-term... |
3090 |
strlcpy(name, mod->strtab + mod->symtab[symnum].st_name, |
9281acea6 kallsyms: make KS... |
3091 3092 |
KSYM_NAME_LEN); strlcpy(module_name, mod->name, MODULE_NAME_LEN); |
ca4787b77 kernel/module.c: ... |
3093 |
*exported = is_exported(name, *value, mod); |
cb2a52052 modules: de-mutex... |
3094 |
preempt_enable(); |
ea07890a6 Fix race between ... |
3095 |
return 0; |
1da177e4c Linux-2.6.12-rc2 |
3096 3097 3098 |
} symnum -= mod->num_symtab; } |
cb2a52052 modules: de-mutex... |
3099 |
preempt_enable(); |
ea07890a6 Fix race between ... |
3100 |
return -ERANGE; |
1da177e4c Linux-2.6.12-rc2 |
3101 3102 3103 3104 3105 3106 3107 |
} static unsigned long mod_find_symname(struct module *mod, const char *name) { unsigned int i; for (i = 0; i < mod->num_symtab; i++) |
54e8ce463 [PATCH] Tell kall... |
3108 3109 |
if (strcmp(name, mod->strtab+mod->symtab[i].st_name) == 0 && mod->symtab[i].st_info != 'U') |
1da177e4c Linux-2.6.12-rc2 |
3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 |
return mod->symtab[i].st_value; return 0; } /* Look for this name: can be of form module:name. */ unsigned long module_kallsyms_lookup_name(const char *name) { struct module *mod; char *colon; unsigned long ret = 0; /* Don't lock: we're in enough trouble already. */ |
cb2a52052 modules: de-mutex... |
3122 |
preempt_disable(); |
1da177e4c Linux-2.6.12-rc2 |
3123 3124 3125 3126 3127 3128 |
if ((colon = strchr(name, ':')) != NULL) { *colon = '\0'; if ((mod = find_module(name)) != NULL) ret = mod_find_symname(mod, colon+1); *colon = ':'; } else { |
d72b37513 Remove stop_machi... |
3129 |
list_for_each_entry_rcu(mod, &modules, list) |
1da177e4c Linux-2.6.12-rc2 |
3130 3131 3132 |
if ((ret = mod_find_symname(mod, name)) != 0) break; } |
cb2a52052 modules: de-mutex... |
3133 |
preempt_enable(); |
1da177e4c Linux-2.6.12-rc2 |
3134 3135 |
return ret; } |
75a66614d Ksplice: Add func... |
3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 |
int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *, struct module *, unsigned long), void *data) { struct module *mod; unsigned int i; int ret; list_for_each_entry(mod, &modules, list) { for (i = 0; i < mod->num_symtab; i++) { ret = fn(data, mod->strtab + mod->symtab[i].st_name, mod, mod->symtab[i].st_value); if (ret != 0) return ret; } } return 0; } |
1da177e4c Linux-2.6.12-rc2 |
3155 |
#endif /* CONFIG_KALLSYMS */ |
21aa9280b debug: show being... |
3156 |
static char *module_flags(struct module *mod, char *buf) |
fa3ba2e81 [PATCH] fix Modul... |
3157 3158 |
{ int bx = 0; |
21aa9280b debug: show being... |
3159 3160 3161 |
if (mod->taints || mod->state == MODULE_STATE_GOING || mod->state == MODULE_STATE_COMING) { |
fa3ba2e81 [PATCH] fix Modul... |
3162 |
buf[bx++] = '('; |
cca3e7073 modules: sysfs - ... |
3163 |
bx += module_flags_taint(mod, buf + bx); |
21aa9280b debug: show being... |
3164 3165 3166 3167 3168 3169 |
/* Show a - for module-is-being-unloaded */ if (mod->state == MODULE_STATE_GOING) buf[bx++] = '-'; /* Show a + for module-is-being-loaded */ if (mod->state == MODULE_STATE_COMING) buf[bx++] = '+'; |
fa3ba2e81 [PATCH] fix Modul... |
3170 3171 3172 3173 3174 3175 |
buf[bx++] = ')'; } buf[bx] = '\0'; return buf; } |
3b5d5c6b0 proc: move /proc/... |
3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 |
#ifdef CONFIG_PROC_FS /* Called by the /proc file system to return a list of modules. */ static void *m_start(struct seq_file *m, loff_t *pos) { mutex_lock(&module_mutex); return seq_list_start(&modules, *pos); } static void *m_next(struct seq_file *m, void *p, loff_t *pos) { return seq_list_next(p, &modules, pos); } static void m_stop(struct seq_file *m, void *p) { mutex_unlock(&module_mutex); } |
1da177e4c Linux-2.6.12-rc2 |
3193 3194 3195 |
static int m_show(struct seq_file *m, void *p) { struct module *mod = list_entry(p, struct module, list); |
fa3ba2e81 [PATCH] fix Modul... |
3196 |
char buf[8]; |
2f0f2a334 module: turn long... |
3197 |
seq_printf(m, "%s %u", |
1da177e4c Linux-2.6.12-rc2 |
3198 3199 3200 3201 3202 3203 3204 3205 3206 |
mod->name, mod->init_size + mod->core_size); print_unload_info(m, mod); /* Informative for users. */ seq_printf(m, " %s", mod->state == MODULE_STATE_GOING ? "Unloading": mod->state == MODULE_STATE_COMING ? "Loading": "Live"); /* Used by oprofile and other similar tools. */ |
9f36e2c44 printk: use %pK f... |
3207 |
seq_printf(m, " 0x%pK", mod->module_core); |
1da177e4c Linux-2.6.12-rc2 |
3208 |
|
fa3ba2e81 [PATCH] fix Modul... |
3209 3210 |
/* Taints info */ if (mod->taints) |
21aa9280b debug: show being... |
3211 |
seq_printf(m, " %s", module_flags(mod, buf)); |
fa3ba2e81 [PATCH] fix Modul... |
3212 |
|
1da177e4c Linux-2.6.12-rc2 |
3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 |
seq_printf(m, " "); return 0; } /* Format: modulename size refcount deps address Where refcount is a number or -, and deps is a comma-separated list of depends or -. */ |
3b5d5c6b0 proc: move /proc/... |
3223 |
static const struct seq_operations modules_op = { |
1da177e4c Linux-2.6.12-rc2 |
3224 3225 3226 3227 3228 |
.start = m_start, .next = m_next, .stop = m_stop, .show = m_show }; |
3b5d5c6b0 proc: move /proc/... |
3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 |
static int modules_open(struct inode *inode, struct file *file) { return seq_open(file, &modules_op); } static const struct file_operations proc_modules_operations = { .open = modules_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release, }; static int __init proc_modules_init(void) { proc_create("modules", 0, NULL, &proc_modules_operations); return 0; } module_init(proc_modules_init); #endif |
1da177e4c Linux-2.6.12-rc2 |
3248 3249 3250 |
/* Given an address, look for it in the module exception tables. */ const struct exception_table_entry *search_module_extables(unsigned long addr) { |
1da177e4c Linux-2.6.12-rc2 |
3251 3252 |
const struct exception_table_entry *e = NULL; struct module *mod; |
24da1cbff modules: remove m... |
3253 |
preempt_disable(); |
d72b37513 Remove stop_machi... |
3254 |
list_for_each_entry_rcu(mod, &modules, list) { |
1da177e4c Linux-2.6.12-rc2 |
3255 3256 |
if (mod->num_exentries == 0) continue; |
22a8bdeb5 whitespace fixes:... |
3257 |
|
1da177e4c Linux-2.6.12-rc2 |
3258 3259 3260 3261 3262 3263 |
e = search_extable(mod->extable, mod->extable + mod->num_exentries - 1, addr); if (e) break; } |
24da1cbff modules: remove m... |
3264 |
preempt_enable(); |
1da177e4c Linux-2.6.12-rc2 |
3265 3266 |
/* Now, if we found one, we are running inside it now, hence |
22a8bdeb5 whitespace fixes:... |
3267 |
we cannot unload the module, hence no refcnt needed. */ |
1da177e4c Linux-2.6.12-rc2 |
3268 3269 |
return e; } |
4d435f9d8 [PATCH] lockdep: ... |
3270 |
/* |
e610499e2 module: __module_... |
3271 3272 3273 3274 3275 |
* is_module_address - is this address inside a module? * @addr: the address to check. * * See is_module_text_address() if you simply want to see if the address * is code (not data). |
4d435f9d8 [PATCH] lockdep: ... |
3276 |
*/ |
e610499e2 module: __module_... |
3277 |
bool is_module_address(unsigned long addr) |
4d435f9d8 [PATCH] lockdep: ... |
3278 |
{ |
e610499e2 module: __module_... |
3279 |
bool ret; |
4d435f9d8 [PATCH] lockdep: ... |
3280 |
|
24da1cbff modules: remove m... |
3281 |
preempt_disable(); |
e610499e2 module: __module_... |
3282 |
ret = __module_address(addr) != NULL; |
24da1cbff modules: remove m... |
3283 |
preempt_enable(); |
4d435f9d8 [PATCH] lockdep: ... |
3284 |
|
e610499e2 module: __module_... |
3285 |
return ret; |
4d435f9d8 [PATCH] lockdep: ... |
3286 |
} |
e610499e2 module: __module_... |
3287 3288 3289 3290 3291 3292 3293 |
/* * __module_address - get the module which contains an address. * @addr: the address. * * Must be called with preempt disabled or module mutex held so that * module doesn't get freed during this. */ |
714f83d5d Merge branch 'tra... |
3294 |
struct module *__module_address(unsigned long addr) |
1da177e4c Linux-2.6.12-rc2 |
3295 3296 |
{ struct module *mod; |
3a642e99b modules: Take a s... |
3297 3298 |
if (addr < module_addr_min || addr > module_addr_max) return NULL; |
d72b37513 Remove stop_machi... |
3299 |
list_for_each_entry_rcu(mod, &modules, list) |
e610499e2 module: __module_... |
3300 3301 |
if (within_module_core(addr, mod) || within_module_init(addr, mod)) |
1da177e4c Linux-2.6.12-rc2 |
3302 3303 3304 |
return mod; return NULL; } |
c6b378019 module: Export sy... |
3305 |
EXPORT_SYMBOL_GPL(__module_address); |
1da177e4c Linux-2.6.12-rc2 |
3306 |
|
e610499e2 module: __module_... |
3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 |
/* * is_module_text_address - is this address inside module code? * @addr: the address to check. * * See is_module_address() if you simply want to see if the address is * anywhere in a module. See kernel_text_address() for testing if an * address corresponds to kernel or module code. */ bool is_module_text_address(unsigned long addr) { bool ret; preempt_disable(); ret = __module_text_address(addr) != NULL; preempt_enable(); return ret; } /* * __module_text_address - get the module whose code contains an address. * @addr: the address. * * Must be called with preempt disabled or module mutex held so that * module doesn't get freed during this. */ struct module *__module_text_address(unsigned long addr) { struct module *mod = __module_address(addr); if (mod) { /* Make sure it's within the text section. */ if (!within(addr, mod->module_init, mod->init_text_size) && !within(addr, mod->module_core, mod->core_text_size)) mod = NULL; } return mod; } |
c6b378019 module: Export sy... |
3344 |
EXPORT_SYMBOL_GPL(__module_text_address); |
e610499e2 module: __module_... |
3345 |
|
1da177e4c Linux-2.6.12-rc2 |
3346 3347 3348 3349 |
/* Don't grab lock, we're oopsing. */ void print_modules(void) { struct module *mod; |
2bc2d61a9 [PATCH] list modu... |
3350 |
char buf[8]; |
1da177e4c Linux-2.6.12-rc2 |
3351 |
|
b231125af printk: add KERN_... |
3352 |
printk(KERN_DEFAULT "Modules linked in:"); |
d72b37513 Remove stop_machi... |
3353 3354 3355 |
/* Most callers should already have preempt disabled, but make sure */ preempt_disable(); list_for_each_entry_rcu(mod, &modules, list) |
21aa9280b debug: show being... |
3356 |
printk(" %s%s", mod->name, module_flags(mod, buf)); |
d72b37513 Remove stop_machi... |
3357 |
preempt_enable(); |
e14af7eeb debug: track and ... |
3358 3359 |
if (last_unloaded_module[0]) printk(" [last unloaded: %s]", last_unloaded_module); |
1da177e4c Linux-2.6.12-rc2 |
3360 3361 3362 |
printk(" "); } |
1da177e4c Linux-2.6.12-rc2 |
3363 |
#ifdef CONFIG_MODVERSIONS |
8c8ef42ae module: include o... |
3364 3365 3366 3367 3368 3369 |
/* Generate the signature for all relevant module structures here. * If these change, we don't want to try to parse the module. */ void module_layout(struct module *mod, struct modversion_info *ver, struct kernel_param *kp, struct kernel_symbol *ks, |
654986462 tracepoints: Fix ... |
3370 |
struct tracepoint * const *tp) |
8c8ef42ae module: include o... |
3371 3372 3373 |
{ } EXPORT_SYMBOL(module_layout); |
1da177e4c Linux-2.6.12-rc2 |
3374 |
#endif |