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kernel/auditsc.c
72.7 KB
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/* auditsc.c -- System-call auditing support |
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* Handles all system-call specific auditing features. * * Copyright 2003-2004 Red Hat Inc., Durham, North Carolina. |
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* Copyright 2005 Hewlett-Packard Development Company, L.P. |
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* Copyright (C) 2005, 2006 IBM Corporation |
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* All Rights Reserved. * * 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 * * Written by Rickard E. (Rik) Faith <faith@redhat.com> * * Many of the ideas implemented here are from Stephen C. Tweedie, * especially the idea of avoiding a copy by using getname. * * The method for actual interception of syscall entry and exit (not in * this file -- see entry.S) is based on a GPL'd patch written by * okir@suse.de and Copyright 2003 SuSE Linux AG. * |
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* POSIX message queue support added by George Wilson <ltcgcw@us.ibm.com>, * 2006. * |
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* The support of additional filter rules compares (>, <, >=, <=) was * added by Dustin Kirkland <dustin.kirkland@us.ibm.com>, 2005. * |
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* Modified by Amy Griffis <amy.griffis@hp.com> to collect additional * filesystem information. |
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* * Subject and object context labeling support added by <danjones@us.ibm.com> * and <dustin.kirkland@us.ibm.com> for LSPP certification compliance. |
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*/ |
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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#include <linux/init.h> |
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#include <asm/types.h> |
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#include <linux/atomic.h> |
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#include <linux/fs.h> #include <linux/namei.h> |
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#include <linux/mm.h> |
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#include <linux/export.h> |
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#include <linux/slab.h> |
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#include <linux/mount.h> |
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#include <linux/socket.h> |
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#include <linux/mqueue.h> |
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#include <linux/audit.h> #include <linux/personality.h> #include <linux/time.h> |
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#include <linux/netlink.h> |
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#include <linux/compiler.h> |
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#include <asm/unistd.h> |
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#include <linux/security.h> |
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#include <linux/list.h> |
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#include <linux/binfmts.h> |
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#include <linux/highmem.h> |
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#include <linux/syscalls.h> |
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#include <asm/syscall.h> |
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#include <linux/capability.h> |
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#include <linux/fs_struct.h> |
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#include <linux/compat.h> |
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#include <linux/ctype.h> |
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#include <linux/string.h> |
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#include <linux/uaccess.h> |
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#include <linux/fsnotify_backend.h> |
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#include <uapi/linux/limits.h> |
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#include <uapi/linux/netfilter/nf_tables.h> |
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#include "audit.h" |
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|
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/* flags stating the success for a syscall */ #define AUDITSC_INVALID 0 #define AUDITSC_SUCCESS 1 #define AUDITSC_FAILURE 2 |
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/* no execve audit message should be longer than this (userspace limits), * see the note near the top of audit_log_execve_info() about this value */ |
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#define MAX_EXECVE_AUDIT_LEN 7500 |
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/* max length to print of cmdline/proctitle value during audit */ #define MAX_PROCTITLE_AUDIT_LEN 128 |
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/* number of audit rules */ int audit_n_rules; |
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/* determines whether we collect data for signals sent */ int audit_signals; |
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struct audit_aux_data { struct audit_aux_data *next; int type; }; |
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/* Number of target pids per aux struct. */ #define AUDIT_AUX_PIDS 16 |
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struct audit_aux_data_pids { struct audit_aux_data d; pid_t target_pid[AUDIT_AUX_PIDS]; |
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kuid_t target_auid[AUDIT_AUX_PIDS]; |
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kuid_t target_uid[AUDIT_AUX_PIDS]; |
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unsigned int target_sessionid[AUDIT_AUX_PIDS]; |
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u32 target_sid[AUDIT_AUX_PIDS]; |
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char target_comm[AUDIT_AUX_PIDS][TASK_COMM_LEN]; |
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int pid_count; }; |
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struct audit_aux_data_bprm_fcaps { struct audit_aux_data d; struct audit_cap_data fcap; unsigned int fcap_ver; struct audit_cap_data old_pcap; struct audit_cap_data new_pcap; }; |
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struct audit_tree_refs { struct audit_tree_refs *next; struct audit_chunk *c[31]; }; |
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struct audit_nfcfgop_tab { enum audit_nfcfgop op; const char *s; }; |
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static const struct audit_nfcfgop_tab audit_nfcfgs[] = { |
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{ AUDIT_XT_OP_REGISTER, "xt_register" }, { AUDIT_XT_OP_REPLACE, "xt_replace" }, { AUDIT_XT_OP_UNREGISTER, "xt_unregister" }, { AUDIT_NFT_OP_TABLE_REGISTER, "nft_register_table" }, { AUDIT_NFT_OP_TABLE_UNREGISTER, "nft_unregister_table" }, { AUDIT_NFT_OP_CHAIN_REGISTER, "nft_register_chain" }, { AUDIT_NFT_OP_CHAIN_UNREGISTER, "nft_unregister_chain" }, { AUDIT_NFT_OP_RULE_REGISTER, "nft_register_rule" }, { AUDIT_NFT_OP_RULE_UNREGISTER, "nft_unregister_rule" }, { AUDIT_NFT_OP_SET_REGISTER, "nft_register_set" }, { AUDIT_NFT_OP_SET_UNREGISTER, "nft_unregister_set" }, { AUDIT_NFT_OP_SETELEM_REGISTER, "nft_register_setelem" }, { AUDIT_NFT_OP_SETELEM_UNREGISTER, "nft_unregister_setelem" }, { AUDIT_NFT_OP_GEN_REGISTER, "nft_register_gen" }, { AUDIT_NFT_OP_OBJ_REGISTER, "nft_register_obj" }, { AUDIT_NFT_OP_OBJ_UNREGISTER, "nft_unregister_obj" }, { AUDIT_NFT_OP_OBJ_RESET, "nft_reset_obj" }, { AUDIT_NFT_OP_FLOWTABLE_REGISTER, "nft_register_flowtable" }, { AUDIT_NFT_OP_FLOWTABLE_UNREGISTER, "nft_unregister_flowtable" }, { AUDIT_NFT_OP_INVALID, "nft_invalid" }, |
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}; |
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static int audit_match_perm(struct audit_context *ctx, int mask) { |
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unsigned n; |
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if (unlikely(!ctx)) return 0; |
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n = ctx->major; |
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switch (audit_classify_syscall(ctx->arch, n)) { case 0: /* native */ if ((mask & AUDIT_PERM_WRITE) && audit_match_class(AUDIT_CLASS_WRITE, n)) return 1; if ((mask & AUDIT_PERM_READ) && audit_match_class(AUDIT_CLASS_READ, n)) return 1; if ((mask & AUDIT_PERM_ATTR) && audit_match_class(AUDIT_CLASS_CHATTR, n)) return 1; return 0; case 1: /* 32bit on biarch */ if ((mask & AUDIT_PERM_WRITE) && audit_match_class(AUDIT_CLASS_WRITE_32, n)) return 1; if ((mask & AUDIT_PERM_READ) && audit_match_class(AUDIT_CLASS_READ_32, n)) return 1; if ((mask & AUDIT_PERM_ATTR) && audit_match_class(AUDIT_CLASS_CHATTR_32, n)) return 1; return 0; case 2: /* open */ return mask & ACC_MODE(ctx->argv[1]); case 3: /* openat */ return mask & ACC_MODE(ctx->argv[2]); case 4: /* socketcall */ return ((mask & AUDIT_PERM_WRITE) && ctx->argv[0] == SYS_BIND); case 5: /* execve */ return mask & AUDIT_PERM_EXEC; default: return 0; } } |
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static int audit_match_filetype(struct audit_context *ctx, int val) |
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{ |
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struct audit_names *n; |
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umode_t mode = (umode_t)val; |
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if (unlikely(!ctx)) return 0; |
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list_for_each_entry(n, &ctx->names_list, list) { |
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if ((n->ino != AUDIT_INO_UNSET) && |
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((n->mode & S_IFMT) == mode)) |
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return 1; } |
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return 0; |
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} |
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/* * We keep a linked list of fixed-sized (31 pointer) arrays of audit_chunk *; * ->first_trees points to its beginning, ->trees - to the current end of data. * ->tree_count is the number of free entries in array pointed to by ->trees. * Original condition is (NULL, NULL, 0); as soon as it grows we never revert to NULL, * "empty" becomes (p, p, 31) afterwards. We don't shrink the list (and seriously, * it's going to remain 1-element for almost any setup) until we free context itself. * References in it _are_ dropped - at the same time we free/drop aux stuff. */ |
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static void audit_set_auditable(struct audit_context *ctx) { if (!ctx->prio) { ctx->prio = 1; |
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ctx->current_state = AUDIT_STATE_RECORD; |
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} } |
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static int put_tree_ref(struct audit_context *ctx, struct audit_chunk *chunk) { struct audit_tree_refs *p = ctx->trees; int left = ctx->tree_count; |
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if (likely(left)) { p->c[--left] = chunk; ctx->tree_count = left; return 1; } if (!p) return 0; p = p->next; if (p) { p->c[30] = chunk; ctx->trees = p; ctx->tree_count = 30; return 1; } return 0; } static int grow_tree_refs(struct audit_context *ctx) { struct audit_tree_refs *p = ctx->trees; |
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ctx->trees = kzalloc(sizeof(struct audit_tree_refs), GFP_KERNEL); if (!ctx->trees) { ctx->trees = p; return 0; } if (p) p->next = ctx->trees; else ctx->first_trees = ctx->trees; ctx->tree_count = 31; return 1; } |
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static void unroll_tree_refs(struct audit_context *ctx, struct audit_tree_refs *p, int count) { |
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struct audit_tree_refs *q; int n; |
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if (!p) { /* we started with empty chain */ p = ctx->first_trees; count = 31; /* if the very first allocation has failed, nothing to do */ if (!p) return; } n = count; for (q = p; q != ctx->trees; q = q->next, n = 31) { while (n--) { audit_put_chunk(q->c[n]); q->c[n] = NULL; } } while (n-- > ctx->tree_count) { audit_put_chunk(q->c[n]); q->c[n] = NULL; } ctx->trees = p; ctx->tree_count = count; |
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} static void free_tree_refs(struct audit_context *ctx) { struct audit_tree_refs *p, *q; |
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for (p = ctx->first_trees; p; p = q) { q = p->next; kfree(p); } } static int match_tree_refs(struct audit_context *ctx, struct audit_tree *tree) { |
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struct audit_tree_refs *p; int n; |
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if (!tree) return 0; /* full ones */ for (p = ctx->first_trees; p != ctx->trees; p = p->next) { for (n = 0; n < 31; n++) if (audit_tree_match(p->c[n], tree)) return 1; } /* partial */ if (p) { for (n = ctx->tree_count; n < 31; n++) if (audit_tree_match(p->c[n], tree)) return 1; } |
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return 0; } |
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static int audit_compare_uid(kuid_t uid, struct audit_names *name, struct audit_field *f, struct audit_context *ctx) |
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{ struct audit_names *n; |
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int rc; |
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|
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if (name) { |
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rc = audit_uid_comparator(uid, f->op, name->uid); |
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if (rc) return rc; } |
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if (ctx) { list_for_each_entry(n, &ctx->names_list, list) { |
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rc = audit_uid_comparator(uid, f->op, n->uid); if (rc) return rc; } } return 0; } |
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static int audit_compare_gid(kgid_t gid, struct audit_names *name, struct audit_field *f, struct audit_context *ctx) { struct audit_names *n; int rc; |
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if (name) { rc = audit_gid_comparator(gid, f->op, name->gid); if (rc) return rc; } |
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if (ctx) { list_for_each_entry(n, &ctx->names_list, list) { rc = audit_gid_comparator(gid, f->op, n->gid); |
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if (rc) return rc; } } return 0; } |
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static int audit_field_compare(struct task_struct *tsk, const struct cred *cred, struct audit_field *f, struct audit_context *ctx, struct audit_names *name) { |
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switch (f->val) { |
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/* process to file object comparisons */ |
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case AUDIT_COMPARE_UID_TO_OBJ_UID: |
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return audit_compare_uid(cred->uid, name, f, ctx); |
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case AUDIT_COMPARE_GID_TO_OBJ_GID: |
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return audit_compare_gid(cred->gid, name, f, ctx); |
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case AUDIT_COMPARE_EUID_TO_OBJ_UID: |
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return audit_compare_uid(cred->euid, name, f, ctx); |
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case AUDIT_COMPARE_EGID_TO_OBJ_GID: |
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return audit_compare_gid(cred->egid, name, f, ctx); |
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case AUDIT_COMPARE_AUID_TO_OBJ_UID: |
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return audit_compare_uid(audit_get_loginuid(tsk), name, f, ctx); |
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case AUDIT_COMPARE_SUID_TO_OBJ_UID: |
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return audit_compare_uid(cred->suid, name, f, ctx); |
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case AUDIT_COMPARE_SGID_TO_OBJ_GID: |
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return audit_compare_gid(cred->sgid, name, f, ctx); |
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case AUDIT_COMPARE_FSUID_TO_OBJ_UID: |
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return audit_compare_uid(cred->fsuid, name, f, ctx); |
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case AUDIT_COMPARE_FSGID_TO_OBJ_GID: |
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return audit_compare_gid(cred->fsgid, name, f, ctx); |
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/* uid comparisons */ case AUDIT_COMPARE_UID_TO_AUID: |
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return audit_uid_comparator(cred->uid, f->op, audit_get_loginuid(tsk)); |
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case AUDIT_COMPARE_UID_TO_EUID: |
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return audit_uid_comparator(cred->uid, f->op, cred->euid); |
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case AUDIT_COMPARE_UID_TO_SUID: |
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return audit_uid_comparator(cred->uid, f->op, cred->suid); |
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case AUDIT_COMPARE_UID_TO_FSUID: |
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return audit_uid_comparator(cred->uid, f->op, cred->fsuid); |
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/* auid comparisons */ case AUDIT_COMPARE_AUID_TO_EUID: |
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return audit_uid_comparator(audit_get_loginuid(tsk), f->op, cred->euid); |
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case AUDIT_COMPARE_AUID_TO_SUID: |
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return audit_uid_comparator(audit_get_loginuid(tsk), f->op, cred->suid); |
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case AUDIT_COMPARE_AUID_TO_FSUID: |
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return audit_uid_comparator(audit_get_loginuid(tsk), f->op, cred->fsuid); |
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/* euid comparisons */ case AUDIT_COMPARE_EUID_TO_SUID: |
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return audit_uid_comparator(cred->euid, f->op, cred->suid); |
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case AUDIT_COMPARE_EUID_TO_FSUID: |
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return audit_uid_comparator(cred->euid, f->op, cred->fsuid); |
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/* suid comparisons */ case AUDIT_COMPARE_SUID_TO_FSUID: |
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return audit_uid_comparator(cred->suid, f->op, cred->fsuid); |
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/* gid comparisons */ case AUDIT_COMPARE_GID_TO_EGID: |
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return audit_gid_comparator(cred->gid, f->op, cred->egid); |
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case AUDIT_COMPARE_GID_TO_SGID: |
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return audit_gid_comparator(cred->gid, f->op, cred->sgid); |
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case AUDIT_COMPARE_GID_TO_FSGID: |
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426 |
return audit_gid_comparator(cred->gid, f->op, cred->fsgid); |
10d683608 audit: comparison... |
427 428 |
/* egid comparisons */ case AUDIT_COMPARE_EGID_TO_SGID: |
ca57ec0f0 audit: Add typesp... |
429 |
return audit_gid_comparator(cred->egid, f->op, cred->sgid); |
10d683608 audit: comparison... |
430 |
case AUDIT_COMPARE_EGID_TO_FSGID: |
ca57ec0f0 audit: Add typesp... |
431 |
return audit_gid_comparator(cred->egid, f->op, cred->fsgid); |
10d683608 audit: comparison... |
432 433 |
/* sgid comparison */ case AUDIT_COMPARE_SGID_TO_FSGID: |
ca57ec0f0 audit: Add typesp... |
434 |
return audit_gid_comparator(cred->sgid, f->op, cred->fsgid); |
02d86a568 audit: allow inte... |
435 436 437 438 439 440 441 |
default: WARN(1, "Missing AUDIT_COMPARE define. Report as a bug "); return 0; } return 0; } |
f368c07d7 [PATCH] audit: pa... |
442 |
/* Determine if any context name data matches a rule's watch data */ |
1da177e4c Linux-2.6.12-rc2 |
443 |
/* Compare a task_struct with an audit_rule. Return 1 on match, 0 |
f56298835 audit: acquire cr... |
444 445 446 447 448 449 |
* otherwise. * * If task_creation is true, this is an explicit indication that we are * filtering a task rule at task creation time. This and tsk == current are * the only situations where tsk->cred may be accessed without an rcu read lock. */ |
1da177e4c Linux-2.6.12-rc2 |
450 |
static int audit_filter_rules(struct task_struct *tsk, |
93315ed6d [PATCH] audit str... |
451 |
struct audit_krule *rule, |
1da177e4c Linux-2.6.12-rc2 |
452 |
struct audit_context *ctx, |
f368c07d7 [PATCH] audit: pa... |
453 |
struct audit_names *name, |
f56298835 audit: acquire cr... |
454 455 |
enum audit_state *state, bool task_creation) |
1da177e4c Linux-2.6.12-rc2 |
456 |
{ |
f56298835 audit: acquire cr... |
457 |
const struct cred *cred; |
5195d8e21 audit: dynamicall... |
458 |
int i, need_sid = 1; |
3dc7e3153 [PATCH] support f... |
459 |
u32 sid; |
8fae47705 audit: add suppor... |
460 |
unsigned int sessionid; |
3dc7e3153 [PATCH] support f... |
461 |
|
f56298835 audit: acquire cr... |
462 |
cred = rcu_dereference_check(tsk->cred, tsk == current || task_creation); |
1da177e4c Linux-2.6.12-rc2 |
463 |
for (i = 0; i < rule->field_count; i++) { |
93315ed6d [PATCH] audit str... |
464 |
struct audit_field *f = &rule->fields[i]; |
5195d8e21 audit: dynamicall... |
465 |
struct audit_names *n; |
1da177e4c Linux-2.6.12-rc2 |
466 |
int result = 0; |
f1dc4867f audit: anchor all... |
467 |
pid_t pid; |
1da177e4c Linux-2.6.12-rc2 |
468 |
|
93315ed6d [PATCH] audit str... |
469 |
switch (f->type) { |
1da177e4c Linux-2.6.12-rc2 |
470 |
case AUDIT_PID: |
fa2bea2f5 audit: consistent... |
471 |
pid = task_tgid_nr(tsk); |
f1dc4867f audit: anchor all... |
472 |
result = audit_comparator(pid, f->op, f->val); |
1da177e4c Linux-2.6.12-rc2 |
473 |
break; |
3c66251e5 [PATCH] add filte... |
474 |
case AUDIT_PPID: |
419c58f11 [PATCH] PPID filt... |
475 476 |
if (ctx) { if (!ctx->ppid) |
c92cdeb45 audit: convert PP... |
477 |
ctx->ppid = task_ppid_nr(tsk); |
3c66251e5 [PATCH] add filte... |
478 |
result = audit_comparator(ctx->ppid, f->op, f->val); |
419c58f11 [PATCH] PPID filt... |
479 |
} |
3c66251e5 [PATCH] add filte... |
480 |
break; |
34d99af52 audit: implement ... |
481 482 |
case AUDIT_EXE: result = audit_exe_compare(tsk, rule->exe); |
23bcc480d audit: allow not ... |
483 484 |
if (f->op == Audit_not_equal) result = !result; |
34d99af52 audit: implement ... |
485 |
break; |
1da177e4c Linux-2.6.12-rc2 |
486 |
case AUDIT_UID: |
ca57ec0f0 audit: Add typesp... |
487 |
result = audit_uid_comparator(cred->uid, f->op, f->uid); |
1da177e4c Linux-2.6.12-rc2 |
488 489 |
break; case AUDIT_EUID: |
ca57ec0f0 audit: Add typesp... |
490 |
result = audit_uid_comparator(cred->euid, f->op, f->uid); |
1da177e4c Linux-2.6.12-rc2 |
491 492 |
break; case AUDIT_SUID: |
ca57ec0f0 audit: Add typesp... |
493 |
result = audit_uid_comparator(cred->suid, f->op, f->uid); |
1da177e4c Linux-2.6.12-rc2 |
494 495 |
break; case AUDIT_FSUID: |
ca57ec0f0 audit: Add typesp... |
496 |
result = audit_uid_comparator(cred->fsuid, f->op, f->uid); |
1da177e4c Linux-2.6.12-rc2 |
497 498 |
break; case AUDIT_GID: |
ca57ec0f0 audit: Add typesp... |
499 |
result = audit_gid_comparator(cred->gid, f->op, f->gid); |
37eebe39c audit: improve GI... |
500 501 |
if (f->op == Audit_equal) { if (!result) |
af85d1772 audit: Fix extend... |
502 |
result = groups_search(cred->group_info, f->gid); |
37eebe39c audit: improve GI... |
503 504 |
} else if (f->op == Audit_not_equal) { if (result) |
af85d1772 audit: Fix extend... |
505 |
result = !groups_search(cred->group_info, f->gid); |
37eebe39c audit: improve GI... |
506 |
} |
1da177e4c Linux-2.6.12-rc2 |
507 508 |
break; case AUDIT_EGID: |
ca57ec0f0 audit: Add typesp... |
509 |
result = audit_gid_comparator(cred->egid, f->op, f->gid); |
37eebe39c audit: improve GI... |
510 511 |
if (f->op == Audit_equal) { if (!result) |
af85d1772 audit: Fix extend... |
512 |
result = groups_search(cred->group_info, f->gid); |
37eebe39c audit: improve GI... |
513 514 |
} else if (f->op == Audit_not_equal) { if (result) |
af85d1772 audit: Fix extend... |
515 |
result = !groups_search(cred->group_info, f->gid); |
37eebe39c audit: improve GI... |
516 |
} |
1da177e4c Linux-2.6.12-rc2 |
517 518 |
break; case AUDIT_SGID: |
ca57ec0f0 audit: Add typesp... |
519 |
result = audit_gid_comparator(cred->sgid, f->op, f->gid); |
1da177e4c Linux-2.6.12-rc2 |
520 521 |
break; case AUDIT_FSGID: |
ca57ec0f0 audit: Add typesp... |
522 |
result = audit_gid_comparator(cred->fsgid, f->op, f->gid); |
1da177e4c Linux-2.6.12-rc2 |
523 |
break; |
8fae47705 audit: add suppor... |
524 |
case AUDIT_SESSIONID: |
5b7138866 audit: Fix wrong ... |
525 |
sessionid = audit_get_sessionid(tsk); |
8fae47705 audit: add suppor... |
526 527 |
result = audit_comparator(sessionid, f->op, f->val); break; |
1da177e4c Linux-2.6.12-rc2 |
528 |
case AUDIT_PERS: |
93315ed6d [PATCH] audit str... |
529 |
result = audit_comparator(tsk->personality, f->op, f->val); |
1da177e4c Linux-2.6.12-rc2 |
530 |
break; |
2fd6f58ba [AUDIT] Don't all... |
531 |
case AUDIT_ARCH: |
9f8dbe9c9 whitespace fixes:... |
532 |
if (ctx) |
93315ed6d [PATCH] audit str... |
533 |
result = audit_comparator(ctx->arch, f->op, f->val); |
2fd6f58ba [AUDIT] Don't all... |
534 |
break; |
1da177e4c Linux-2.6.12-rc2 |
535 536 |
case AUDIT_EXIT: |
ba59eae72 audit: fix macros... |
537 |
if (ctx && ctx->return_valid != AUDITSC_INVALID) |
93315ed6d [PATCH] audit str... |
538 |
result = audit_comparator(ctx->return_code, f->op, f->val); |
1da177e4c Linux-2.6.12-rc2 |
539 540 |
break; case AUDIT_SUCCESS: |
ba59eae72 audit: fix macros... |
541 |
if (ctx && ctx->return_valid != AUDITSC_INVALID) { |
93315ed6d [PATCH] audit str... |
542 543 |
if (f->val) result = audit_comparator(ctx->return_valid, f->op, AUDITSC_SUCCESS); |
b01f2cc1c [AUDIT] Allow fil... |
544 |
else |
93315ed6d [PATCH] audit str... |
545 |
result = audit_comparator(ctx->return_valid, f->op, AUDITSC_FAILURE); |
b01f2cc1c [AUDIT] Allow fil... |
546 |
} |
1da177e4c Linux-2.6.12-rc2 |
547 548 |
break; case AUDIT_DEVMAJOR: |
16c174bd9 audit: check curr... |
549 550 551 552 553 |
if (name) { if (audit_comparator(MAJOR(name->dev), f->op, f->val) || audit_comparator(MAJOR(name->rdev), f->op, f->val)) ++result; } else if (ctx) { |
5195d8e21 audit: dynamicall... |
554 |
list_for_each_entry(n, &ctx->names_list, list) { |
16c174bd9 audit: check curr... |
555 556 |
if (audit_comparator(MAJOR(n->dev), f->op, f->val) || audit_comparator(MAJOR(n->rdev), f->op, f->val)) { |
1da177e4c Linux-2.6.12-rc2 |
557 558 559 560 561 562 563 |
++result; break; } } } break; case AUDIT_DEVMINOR: |
16c174bd9 audit: check curr... |
564 565 566 567 568 |
if (name) { if (audit_comparator(MINOR(name->dev), f->op, f->val) || audit_comparator(MINOR(name->rdev), f->op, f->val)) ++result; } else if (ctx) { |
5195d8e21 audit: dynamicall... |
569 |
list_for_each_entry(n, &ctx->names_list, list) { |
16c174bd9 audit: check curr... |
570 571 |
if (audit_comparator(MINOR(n->dev), f->op, f->val) || audit_comparator(MINOR(n->rdev), f->op, f->val)) { |
1da177e4c Linux-2.6.12-rc2 |
572 573 574 575 576 577 578 |
++result; break; } } } break; case AUDIT_INODE: |
f368c07d7 [PATCH] audit: pa... |
579 |
if (name) |
db510fc5c audit: update AUD... |
580 |
result = audit_comparator(name->ino, f->op, f->val); |
f368c07d7 [PATCH] audit: pa... |
581 |
else if (ctx) { |
5195d8e21 audit: dynamicall... |
582 583 |
list_for_each_entry(n, &ctx->names_list, list) { if (audit_comparator(n->ino, f->op, f->val)) { |
1da177e4c Linux-2.6.12-rc2 |
584 585 586 587 588 589 |
++result; break; } } } break; |
efaffd6e4 audit: allow matc... |
590 591 |
case AUDIT_OBJ_UID: if (name) { |
ca57ec0f0 audit: Add typesp... |
592 |
result = audit_uid_comparator(name->uid, f->op, f->uid); |
efaffd6e4 audit: allow matc... |
593 594 |
} else if (ctx) { list_for_each_entry(n, &ctx->names_list, list) { |
ca57ec0f0 audit: Add typesp... |
595 |
if (audit_uid_comparator(n->uid, f->op, f->uid)) { |
efaffd6e4 audit: allow matc... |
596 597 598 599 600 601 |
++result; break; } } } break; |
54d3218b3 audit: allow audi... |
602 603 |
case AUDIT_OBJ_GID: if (name) { |
ca57ec0f0 audit: Add typesp... |
604 |
result = audit_gid_comparator(name->gid, f->op, f->gid); |
54d3218b3 audit: allow audi... |
605 606 |
} else if (ctx) { list_for_each_entry(n, &ctx->names_list, list) { |
ca57ec0f0 audit: Add typesp... |
607 |
if (audit_gid_comparator(n->gid, f->op, f->gid)) { |
54d3218b3 audit: allow audi... |
608 609 610 611 612 613 |
++result; break; } } } break; |
f368c07d7 [PATCH] audit: pa... |
614 |
case AUDIT_WATCH: |
0223fad3c audit: enforce op... |
615 616 617 618 619 620 621 |
if (name) { result = audit_watch_compare(rule->watch, name->ino, name->dev); if (f->op == Audit_not_equal) result = !result; } |
f368c07d7 [PATCH] audit: pa... |
622 |
break; |
74c3cbe33 [PATCH] audit: wa... |
623 |
case AUDIT_DIR: |
0223fad3c audit: enforce op... |
624 |
if (ctx) { |
74c3cbe33 [PATCH] audit: wa... |
625 |
result = match_tree_refs(ctx, rule->tree); |
0223fad3c audit: enforce op... |
626 627 628 |
if (f->op == Audit_not_equal) result = !result; } |
74c3cbe33 [PATCH] audit: wa... |
629 |
break; |
1da177e4c Linux-2.6.12-rc2 |
630 |
case AUDIT_LOGINUID: |
38f805904 audit: normalize ... |
631 632 |
result = audit_uid_comparator(audit_get_loginuid(tsk), f->op, f->uid); |
1da177e4c Linux-2.6.12-rc2 |
633 |
break; |
780a7654c audit: Make testi... |
634 635 636 |
case AUDIT_LOGINUID_SET: result = audit_comparator(audit_loginuid_set(tsk), f->op, f->val); break; |
bf361231c audit: add saddr_... |
637 |
case AUDIT_SADDR_FAM: |
6e3ee990c audit: fix possib... |
638 |
if (ctx && ctx->sockaddr) |
bf361231c audit: add saddr_... |
639 640 641 |
result = audit_comparator(ctx->sockaddr->ss_family, f->op, f->val); break; |
3a6b9f85c [PATCH] audit: re... |
642 643 644 645 646 |
case AUDIT_SUBJ_USER: case AUDIT_SUBJ_ROLE: case AUDIT_SUBJ_TYPE: case AUDIT_SUBJ_SEN: case AUDIT_SUBJ_CLR: |
3dc7e3153 [PATCH] support f... |
647 648 649 650 651 |
/* NOTE: this may return negative values indicating a temporary error. We simply treat this as a match for now to avoid losing information that may be wanted. An error message will also be logged upon error */ |
04305e4af Audit: Final rena... |
652 |
if (f->lsm_rule) { |
2ad312d20 [PATCH] Audit Fil... |
653 |
if (need_sid) { |
4ebd7651b lsm: separate sec... |
654 |
security_task_getsecid_subj(tsk, &sid); |
2ad312d20 [PATCH] Audit Fil... |
655 656 |
need_sid = 0; } |
d7a96f3a1 Audit: internally... |
657 |
result = security_audit_rule_match(sid, f->type, |
90462a5bd audit: remove unu... |
658 659 |
f->op, f->lsm_rule); |
2ad312d20 [PATCH] Audit Fil... |
660 |
} |
3dc7e3153 [PATCH] support f... |
661 |
break; |
6e5a2d1d3 [PATCH] audit: su... |
662 663 664 665 666 667 668 |
case AUDIT_OBJ_USER: case AUDIT_OBJ_ROLE: case AUDIT_OBJ_TYPE: case AUDIT_OBJ_LEV_LOW: case AUDIT_OBJ_LEV_HIGH: /* The above note for AUDIT_SUBJ_USER...AUDIT_SUBJ_CLR also applies here */ |
04305e4af Audit: Final rena... |
669 |
if (f->lsm_rule) { |
6e5a2d1d3 [PATCH] audit: su... |
670 671 |
/* Find files that match */ if (name) { |
d7a96f3a1 Audit: internally... |
672 |
result = security_audit_rule_match( |
90462a5bd audit: remove unu... |
673 674 675 676 |
name->osid, f->type, f->op, f->lsm_rule); |
6e5a2d1d3 [PATCH] audit: su... |
677 |
} else if (ctx) { |
5195d8e21 audit: dynamicall... |
678 |
list_for_each_entry(n, &ctx->names_list, list) { |
90462a5bd audit: remove unu... |
679 680 681 682 683 |
if (security_audit_rule_match( n->osid, f->type, f->op, f->lsm_rule)) { |
6e5a2d1d3 [PATCH] audit: su... |
684 685 686 687 688 689 |
++result; break; } } } /* Find ipc objects that match */ |
a33e67510 sanitize audit_ip... |
690 691 692 693 |
if (!ctx || ctx->type != AUDIT_IPC) break; if (security_audit_rule_match(ctx->ipc.osid, f->type, f->op, |
90462a5bd audit: remove unu... |
694 |
f->lsm_rule)) |
a33e67510 sanitize audit_ip... |
695 |
++result; |
6e5a2d1d3 [PATCH] audit: su... |
696 697 |
} break; |
1da177e4c Linux-2.6.12-rc2 |
698 699 700 701 702 |
case AUDIT_ARG0: case AUDIT_ARG1: case AUDIT_ARG2: case AUDIT_ARG3: if (ctx) |
93315ed6d [PATCH] audit str... |
703 |
result = audit_comparator(ctx->argv[f->type-AUDIT_ARG0], f->op, f->val); |
1da177e4c Linux-2.6.12-rc2 |
704 |
break; |
5adc8a6ad [PATCH] add rule ... |
705 706 707 708 |
case AUDIT_FILTERKEY: /* ignore this field for filtering */ result = 1; break; |
55669bfa1 [PATCH] audit: AU... |
709 710 |
case AUDIT_PERM: result = audit_match_perm(ctx, f->val); |
0223fad3c audit: enforce op... |
711 712 |
if (f->op == Audit_not_equal) result = !result; |
55669bfa1 [PATCH] audit: AU... |
713 |
break; |
8b67dca94 [PATCH] new predi... |
714 715 |
case AUDIT_FILETYPE: result = audit_match_filetype(ctx, f->val); |
0223fad3c audit: enforce op... |
716 717 |
if (f->op == Audit_not_equal) result = !result; |
8b67dca94 [PATCH] new predi... |
718 |
break; |
02d86a568 audit: allow inte... |
719 720 721 |
case AUDIT_FIELD_COMPARE: result = audit_field_compare(tsk, cred, f, ctx, name); break; |
1da177e4c Linux-2.6.12-rc2 |
722 |
} |
f56298835 audit: acquire cr... |
723 |
if (!result) |
1da177e4c Linux-2.6.12-rc2 |
724 725 |
return 0; } |
0590b9335 fixing audit rule... |
726 727 728 729 730 731 732 733 734 735 |
if (ctx) { if (rule->prio <= ctx->prio) return 0; if (rule->filterkey) { kfree(ctx->filterkey); ctx->filterkey = kstrdup(rule->filterkey, GFP_ATOMIC); } ctx->prio = rule->prio; } |
1da177e4c Linux-2.6.12-rc2 |
736 |
switch (rule->action) { |
66b12abc8 audit: fix some h... |
737 |
case AUDIT_NEVER: |
619ed58ac audit: Rename enu... |
738 |
*state = AUDIT_STATE_DISABLED; |
66b12abc8 audit: fix some h... |
739 740 |
break; case AUDIT_ALWAYS: |
619ed58ac audit: Rename enu... |
741 |
*state = AUDIT_STATE_RECORD; |
66b12abc8 audit: fix some h... |
742 |
break; |
1da177e4c Linux-2.6.12-rc2 |
743 744 745 746 747 748 749 750 |
} return 1; } /* At process creation time, we can determine if system-call auditing is * completely disabled for this task. Since we only have the task * structure at this point, we can only check uid and gid. */ |
e048e02c8 make sure that fi... |
751 |
static enum audit_state audit_filter_task(struct task_struct *tsk, char **key) |
1da177e4c Linux-2.6.12-rc2 |
752 753 754 755 756 |
{ struct audit_entry *e; enum audit_state state; rcu_read_lock(); |
0f45aa18e AUDIT: Allow filt... |
757 |
list_for_each_entry_rcu(e, &audit_filter_list[AUDIT_FILTER_TASK], list) { |
f56298835 audit: acquire cr... |
758 759 |
if (audit_filter_rules(tsk, &e->rule, NULL, NULL, &state, true)) { |
619ed58ac audit: Rename enu... |
760 |
if (state == AUDIT_STATE_RECORD) |
e048e02c8 make sure that fi... |
761 |
*key = kstrdup(e->rule.filterkey, GFP_ATOMIC); |
1da177e4c Linux-2.6.12-rc2 |
762 763 764 765 766 |
rcu_read_unlock(); return state; } } rcu_read_unlock(); |
619ed58ac audit: Rename enu... |
767 |
return AUDIT_STATE_BUILD; |
1da177e4c Linux-2.6.12-rc2 |
768 |
} |
a3c549311 auditsc: audit_kr... |
769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 |
static int audit_in_mask(const struct audit_krule *rule, unsigned long val) { int word, bit; if (val > 0xffffffff) return false; word = AUDIT_WORD(val); if (word >= AUDIT_BITMASK_SIZE) return false; bit = AUDIT_BIT(val); return rule->mask[word] & bit; } |
127c8c5f0 audit: Make audit... |
784 785 786 |
/* At syscall exit time, this filter is called if the audit_state is * not low enough that auditing cannot take place, but is also not * high enough that we already know we have to write an audit record |
619ed58ac audit: Rename enu... |
787 |
* (i.e., the state is AUDIT_STATE_BUILD). |
1da177e4c Linux-2.6.12-rc2 |
788 |
*/ |
127c8c5f0 audit: Make audit... |
789 |
static void audit_filter_syscall(struct task_struct *tsk, |
5504a69a4 audit: further cl... |
790 |
struct audit_context *ctx) |
1da177e4c Linux-2.6.12-rc2 |
791 792 |
{ struct audit_entry *e; |
c38964959 AUDIT: Speed up a... |
793 |
enum audit_state state; |
1da177e4c Linux-2.6.12-rc2 |
794 |
|
5b52330bb audit: fix auditd... |
795 |
if (auditd_test_task(tsk)) |
127c8c5f0 audit: Make audit... |
796 |
return; |
f7056d64a AUDIT: Really exe... |
797 |
|
1da177e4c Linux-2.6.12-rc2 |
798 |
rcu_read_lock(); |
5504a69a4 audit: further cl... |
799 |
list_for_each_entry_rcu(e, &audit_filter_list[AUDIT_FILTER_EXIT], list) { |
699c1868a audit: purge unne... |
800 801 802 803 804 |
if (audit_in_mask(&e->rule, ctx->major) && audit_filter_rules(tsk, &e->rule, ctx, NULL, &state, false)) { rcu_read_unlock(); ctx->current_state = state; |
127c8c5f0 audit: Make audit... |
805 |
return; |
f368c07d7 [PATCH] audit: pa... |
806 807 808 |
} } rcu_read_unlock(); |
127c8c5f0 audit: Make audit... |
809 |
return; |
f368c07d7 [PATCH] audit: pa... |
810 |
} |
5195d8e21 audit: dynamicall... |
811 812 813 814 815 816 817 |
/* * Given an audit_name check the inode hash table to see if they match. * Called holding the rcu read lock to protect the use of audit_inode_hash */ static int audit_filter_inode_name(struct task_struct *tsk, struct audit_names *n, struct audit_context *ctx) { |
5195d8e21 audit: dynamicall... |
818 819 820 821 |
int h = audit_hash_ino((u32)n->ino); struct list_head *list = &audit_inode_hash[h]; struct audit_entry *e; enum audit_state state; |
5195d8e21 audit: dynamicall... |
822 |
list_for_each_entry_rcu(e, list, list) { |
a3c549311 auditsc: audit_kr... |
823 |
if (audit_in_mask(&e->rule, ctx->major) && |
5195d8e21 audit: dynamicall... |
824 825 826 827 828 |
audit_filter_rules(tsk, &e->rule, ctx, n, &state, false)) { ctx->current_state = state; return 1; } } |
5195d8e21 audit: dynamicall... |
829 830 831 832 |
return 0; } /* At syscall exit time, this filter is called if any audit_names have been |
f368c07d7 [PATCH] audit: pa... |
833 |
* collected during syscall processing. We only check rules in sublists at hash |
5195d8e21 audit: dynamicall... |
834 |
* buckets applicable to the inode numbers in audit_names. |
f368c07d7 [PATCH] audit: pa... |
835 836 |
* Regarding audit_state, same rules apply as for audit_filter_syscall(). */ |
0590b9335 fixing audit rule... |
837 |
void audit_filter_inodes(struct task_struct *tsk, struct audit_context *ctx) |
f368c07d7 [PATCH] audit: pa... |
838 |
{ |
5195d8e21 audit: dynamicall... |
839 |
struct audit_names *n; |
f368c07d7 [PATCH] audit: pa... |
840 |
|
5b52330bb audit: fix auditd... |
841 |
if (auditd_test_task(tsk)) |
0590b9335 fixing audit rule... |
842 |
return; |
f368c07d7 [PATCH] audit: pa... |
843 844 |
rcu_read_lock(); |
f368c07d7 [PATCH] audit: pa... |
845 |
|
5195d8e21 audit: dynamicall... |
846 847 848 |
list_for_each_entry(n, &ctx->names_list, list) { if (audit_filter_inode_name(tsk, n, ctx)) break; |
0f45aa18e AUDIT: Allow filt... |
849 850 |
} rcu_read_unlock(); |
0f45aa18e AUDIT: Allow filt... |
851 |
} |
3f1c82502 audit: Audit proc... |
852 853 854 855 856 857 |
static inline void audit_proctitle_free(struct audit_context *context) { kfree(context->proctitle.value); context->proctitle.value = NULL; context->proctitle.len = 0; } |
95e0b46fc audit: fix a meml... |
858 859 860 861 862 863 864 |
static inline void audit_free_module(struct audit_context *context) { if (context->type == AUDIT_KERN_MODULE) { kfree(context->module.name); context->module.name = NULL; } } |
1da177e4c Linux-2.6.12-rc2 |
865 866 |
static inline void audit_free_names(struct audit_context *context) { |
5195d8e21 audit: dynamicall... |
867 |
struct audit_names *n, *next; |
1da177e4c Linux-2.6.12-rc2 |
868 |
|
5195d8e21 audit: dynamicall... |
869 870 |
list_for_each_entry_safe(n, next, &context->names_list, list) { list_del(&n->list); |
55422d0bd audit: replace ge... |
871 872 |
if (n->name) putname(n->name); |
5195d8e21 audit: dynamicall... |
873 874 |
if (n->should_free) kfree(n); |
8c8570fb8 [PATCH] Capture s... |
875 |
} |
1da177e4c Linux-2.6.12-rc2 |
876 |
context->name_count = 0; |
44707fdf5 d_path: Use struc... |
877 878 879 |
path_put(&context->pwd); context->pwd.dentry = NULL; context->pwd.mnt = NULL; |
1da177e4c Linux-2.6.12-rc2 |
880 881 882 883 884 885 886 887 888 889 |
} static inline void audit_free_aux(struct audit_context *context) { struct audit_aux_data *aux; while ((aux = context->aux)) { context->aux = aux->next; kfree(aux); } |
e54dc2431 [PATCH] audit sig... |
890 891 892 893 |
while ((aux = context->aux_pids)) { context->aux_pids = aux->next; kfree(aux); } |
1da177e4c Linux-2.6.12-rc2 |
894 |
} |
1da177e4c Linux-2.6.12-rc2 |
895 896 897 |
static inline struct audit_context *audit_alloc_context(enum audit_state state) { struct audit_context *context; |
17c6ee707 auditsc: Use kzal... |
898 899 |
context = kzalloc(sizeof(*context), GFP_KERNEL); if (!context) |
1da177e4c Linux-2.6.12-rc2 |
900 |
return NULL; |
e2c5adc88 auditsc: remove a... |
901 |
context->state = state; |
619ed58ac audit: Rename enu... |
902 |
context->prio = state == AUDIT_STATE_RECORD ? ~0ULL : 0; |
916d75761 Fix rule eviction... |
903 |
INIT_LIST_HEAD(&context->killed_trees); |
5195d8e21 audit: dynamicall... |
904 |
INIT_LIST_HEAD(&context->names_list); |
6d915476e audit: trigger ac... |
905 |
context->fds[0] = -1; |
ba59eae72 audit: fix macros... |
906 |
context->return_valid = AUDITSC_INVALID; |
1da177e4c Linux-2.6.12-rc2 |
907 908 |
return context; } |
b0dd25a82 [PATCH] AUDIT: ke... |
909 910 911 912 913 |
/** * audit_alloc - allocate an audit context block for a task * @tsk: task * * Filter on the task information and allocate a per-task audit context |
1da177e4c Linux-2.6.12-rc2 |
914 915 |
* if necessary. Doing so turns on system call auditing for the * specified task. This is called from copy_process, so no lock is |
b0dd25a82 [PATCH] AUDIT: ke... |
916 917 |
* needed. */ |
1da177e4c Linux-2.6.12-rc2 |
918 919 920 921 |
int audit_alloc(struct task_struct *tsk) { struct audit_context *context; enum audit_state state; |
e048e02c8 make sure that fi... |
922 |
char *key = NULL; |
1da177e4c Linux-2.6.12-rc2 |
923 |
|
b593d384e [AUDIT] create co... |
924 |
if (likely(!audit_ever_enabled)) |
1da177e4c Linux-2.6.12-rc2 |
925 |
return 0; /* Return if not auditing. */ |
e048e02c8 make sure that fi... |
926 |
state = audit_filter_task(tsk, &key); |
619ed58ac audit: Rename enu... |
927 |
if (state == AUDIT_STATE_DISABLED) { |
785dc4eb7 audit: Migrate to... |
928 |
clear_task_syscall_work(tsk, SYSCALL_AUDIT); |
1da177e4c Linux-2.6.12-rc2 |
929 |
return 0; |
d48d80512 audit_alloc: clea... |
930 |
} |
1da177e4c Linux-2.6.12-rc2 |
931 932 |
if (!(context = audit_alloc_context(state))) { |
e048e02c8 make sure that fi... |
933 |
kfree(key); |
1da177e4c Linux-2.6.12-rc2 |
934 935 936 |
audit_log_lost("out of memory in audit_alloc"); return -ENOMEM; } |
e048e02c8 make sure that fi... |
937 |
context->filterkey = key; |
1da177e4c Linux-2.6.12-rc2 |
938 |
|
c0b0ae8a8 audit: use inline... |
939 |
audit_set_context(tsk, context); |
785dc4eb7 audit: Migrate to... |
940 |
set_task_syscall_work(tsk, SYSCALL_AUDIT); |
1da177e4c Linux-2.6.12-rc2 |
941 942 943 944 945 |
return 0; } static inline void audit_free_context(struct audit_context *context) { |
95e0b46fc audit: fix a meml... |
946 |
audit_free_module(context); |
c62d773a3 audit: no nested ... |
947 948 949 950 951 952 |
audit_free_names(context); unroll_tree_refs(context, NULL, 0); free_tree_refs(context); audit_free_aux(context); kfree(context->filterkey); kfree(context->sockaddr); |
3f1c82502 audit: Audit proc... |
953 |
audit_proctitle_free(context); |
c62d773a3 audit: no nested ... |
954 |
kfree(context); |
1da177e4c Linux-2.6.12-rc2 |
955 |
} |
e54dc2431 [PATCH] audit sig... |
956 |
static int audit_log_pid_context(struct audit_context *context, pid_t pid, |
cca080d9b userns: Convert a... |
957 |
kuid_t auid, kuid_t uid, unsigned int sessionid, |
4746ec5b0 [AUDIT] add sessi... |
958 |
u32 sid, char *comm) |
e54dc2431 [PATCH] audit sig... |
959 960 |
{ struct audit_buffer *ab; |
2a862b32f Audit: use new LS... |
961 |
char *ctx = NULL; |
e54dc2431 [PATCH] audit sig... |
962 963 964 965 966 |
u32 len; int rc = 0; ab = audit_log_start(context, GFP_KERNEL, AUDIT_OBJ_PID); if (!ab) |
6246ccab9 [AUDIT] do not pa... |
967 |
return rc; |
e54dc2431 [PATCH] audit sig... |
968 |
|
e1760bd5f userns: Convert t... |
969 970 |
audit_log_format(ab, "opid=%d oauid=%d ouid=%d oses=%d", pid, from_kuid(&init_user_ns, auid), |
cca080d9b userns: Convert a... |
971 |
from_kuid(&init_user_ns, uid), sessionid); |
ad395abec Audit: do not pri... |
972 973 974 975 976 977 978 979 |
if (sid) { if (security_secid_to_secctx(sid, &ctx, &len)) { audit_log_format(ab, " obj=(none)"); rc = 1; } else { audit_log_format(ab, " obj=%s", ctx); security_release_secctx(ctx, len); } |
2a862b32f Audit: use new LS... |
980 |
} |
c2a7780ef [AUDIT] collect u... |
981 982 |
audit_log_format(ab, " ocomm="); audit_log_untrustedstring(ab, comm); |
e54dc2431 [PATCH] audit sig... |
983 |
audit_log_end(ab); |
e54dc2431 [PATCH] audit sig... |
984 985 986 |
return rc; } |
43761473c audit: fix a doub... |
987 988 |
static void audit_log_execve_info(struct audit_context *context, struct audit_buffer **ab) |
bdf4c48af audit: rework exe... |
989 |
{ |
43761473c audit: fix a doub... |
990 991 992 993 |
long len_max; long len_rem; long len_full; long len_buf; |
8443075ea audit: tame initi... |
994 |
long len_abuf = 0; |
43761473c audit: fix a doub... |
995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 |
long len_tmp; bool require_data; bool encode; unsigned int iter; unsigned int arg; char *buf_head; char *buf; const char __user *p = (const char __user *)current->mm->arg_start; /* NOTE: this buffer needs to be large enough to hold all the non-arg * data we put in the audit record for this argument (see the * code below) ... at this point in time 96 is plenty */ char abuf[96]; /* NOTE: we set MAX_EXECVE_AUDIT_LEN to a rather arbitrary limit, the * current value of 7500 is not as important as the fact that it * is less than 8k, a setting of 7500 gives us plenty of wiggle * room if we go over a little bit in the logging below */ WARN_ON_ONCE(MAX_EXECVE_AUDIT_LEN > 7500); len_max = MAX_EXECVE_AUDIT_LEN; /* scratch buffer to hold the userspace args */ buf_head = kmalloc(MAX_EXECVE_AUDIT_LEN + 1, GFP_KERNEL); if (!buf_head) { audit_panic("out of memory for argv string"); return; |
de6bbd1d3 [AUDIT] break lar... |
1021 |
} |
43761473c audit: fix a doub... |
1022 |
buf = buf_head; |
040b3a2df audit: fix two bu... |
1023 |
|
43761473c audit: fix a doub... |
1024 |
audit_log_format(*ab, "argc=%d", context->execve.argc); |
040b3a2df audit: fix two bu... |
1025 |
|
43761473c audit: fix a doub... |
1026 1027 1028 1029 1030 1031 1032 |
len_rem = len_max; len_buf = 0; len_full = 0; require_data = true; encode = false; iter = 0; arg = 0; |
de6bbd1d3 [AUDIT] break lar... |
1033 |
do { |
43761473c audit: fix a doub... |
1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 |
/* NOTE: we don't ever want to trust this value for anything * serious, but the audit record format insists we * provide an argument length for really long arguments, * e.g. > MAX_EXECVE_AUDIT_LEN, so we have no choice but * to use strncpy_from_user() to obtain this value for * recording in the log, although we don't use it * anywhere here to avoid a double-fetch problem */ if (len_full == 0) len_full = strnlen_user(p, MAX_ARG_STRLEN) - 1; /* read more data from userspace */ if (require_data) { /* can we make more room in the buffer? */ if (buf != buf_head) { memmove(buf_head, buf, len_buf); buf = buf_head; } /* fetch as much as we can of the argument */ len_tmp = strncpy_from_user(&buf_head[len_buf], p, len_max - len_buf); if (len_tmp == -EFAULT) { /* unable to copy from userspace */ send_sig(SIGKILL, current, 0); goto out; } else if (len_tmp == (len_max - len_buf)) { /* buffer is not large enough */ require_data = true; /* NOTE: if we are going to span multiple * buffers force the encoding so we stand * a chance at a sane len_full value and * consistent record encoding */ encode = true; len_full = len_full * 2; p += len_tmp; } else { require_data = false; if (!encode) encode = audit_string_contains_control( buf, len_tmp); /* try to use a trusted value for len_full */ if (len_full < len_max) len_full = (encode ? len_tmp * 2 : len_tmp); p += len_tmp + 1; } len_buf += len_tmp; buf_head[len_buf] = '\0'; |
bdf4c48af audit: rework exe... |
1082 |
|
43761473c audit: fix a doub... |
1083 1084 |
/* length of the buffer in the audit record? */ len_abuf = (encode ? len_buf * 2 : len_buf + 2); |
bdf4c48af audit: rework exe... |
1085 |
} |
de6bbd1d3 [AUDIT] break lar... |
1086 |
|
43761473c audit: fix a doub... |
1087 |
/* write as much as we can to the audit log */ |
ea956d8be audit: print empt... |
1088 |
if (len_buf >= 0) { |
43761473c audit: fix a doub... |
1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 |
/* NOTE: some magic numbers here - basically if we * can't fit a reasonable amount of data into the * existing audit buffer, flush it and start with * a new buffer */ if ((sizeof(abuf) + 8) > len_rem) { len_rem = len_max; audit_log_end(*ab); *ab = audit_log_start(context, GFP_KERNEL, AUDIT_EXECVE); if (!*ab) goto out; } |
bdf4c48af audit: rework exe... |
1101 |
|
43761473c audit: fix a doub... |
1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 |
/* create the non-arg portion of the arg record */ len_tmp = 0; if (require_data || (iter > 0) || ((len_abuf + sizeof(abuf)) > len_rem)) { if (iter == 0) { len_tmp += snprintf(&abuf[len_tmp], sizeof(abuf) - len_tmp, " a%d_len=%lu", arg, len_full); } len_tmp += snprintf(&abuf[len_tmp], sizeof(abuf) - len_tmp, " a%d[%d]=", arg, iter++); } else len_tmp += snprintf(&abuf[len_tmp], sizeof(abuf) - len_tmp, " a%d=", arg); WARN_ON(len_tmp >= sizeof(abuf)); abuf[sizeof(abuf) - 1] = '\0'; /* log the arg in the audit record */ audit_log_format(*ab, "%s", abuf); len_rem -= len_tmp; len_tmp = len_buf; if (encode) { if (len_abuf > len_rem) len_tmp = len_rem / 2; /* encoding */ audit_log_n_hex(*ab, buf, len_tmp); len_rem -= len_tmp * 2; len_abuf -= len_tmp * 2; } else { if (len_abuf > len_rem) len_tmp = len_rem - 2; /* quotes */ audit_log_n_string(*ab, buf, len_tmp); len_rem -= len_tmp + 2; /* don't subtract the "2" because we still need * to add quotes to the remaining string */ len_abuf -= len_tmp; } len_buf -= len_tmp; buf += len_tmp; } |
bdf4c48af audit: rework exe... |
1144 |
|
43761473c audit: fix a doub... |
1145 1146 1147 1148 1149 1150 1151 1152 1153 |
/* ready to move to the next argument? */ if ((len_buf == 0) && !require_data) { arg++; iter = 0; len_full = 0; require_data = true; encode = false; } } while (arg < context->execve.argc); |
de6bbd1d3 [AUDIT] break lar... |
1154 |
|
43761473c audit: fix a doub... |
1155 |
/* NOTE: the caller handles the final audit_log_end() call */ |
de6bbd1d3 [AUDIT] break lar... |
1156 |
|
43761473c audit: fix a doub... |
1157 1158 |
out: kfree(buf_head); |
bdf4c48af audit: rework exe... |
1159 |
} |
2efa48fec audit: Make audit... |
1160 1161 |
static void audit_log_cap(struct audit_buffer *ab, char *prefix, kernel_cap_t *cap) |
5f3d544f1 audit: remove aud... |
1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 |
{ int i; if (cap_isclear(*cap)) { audit_log_format(ab, " %s=0", prefix); return; } audit_log_format(ab, " %s=", prefix); CAP_FOR_EACH_U32(i) audit_log_format(ab, "%08x", cap->cap[CAP_LAST_U32 - i]); } static void audit_log_fcaps(struct audit_buffer *ab, struct audit_names *name) { if (name->fcap_ver == -1) { audit_log_format(ab, " cap_fe=? cap_fver=? cap_fp=? cap_fi=?"); return; } audit_log_cap(ab, "cap_fp", &name->fcap.permitted); audit_log_cap(ab, "cap_fi", &name->fcap.inheritable); audit_log_format(ab, " cap_fe=%d cap_fver=%x cap_frootid=%d", name->fcap.fE, name->fcap_ver, from_kuid(&init_user_ns, name->fcap.rootid)); } |
3a10df731 audit: log AUDIT_... |
1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 |
static void audit_log_time(struct audit_context *context, struct audit_buffer **ab) { const struct audit_ntp_data *ntp = &context->time.ntp_data; const struct timespec64 *tk = &context->time.tk_injoffset; static const char * const ntp_name[] = { "offset", "freq", "status", "tai", "tick", "adjust", }; int type; if (context->type == AUDIT_TIME_ADJNTPVAL) { for (type = 0; type < AUDIT_NTP_NVALS; type++) { if (ntp->vals[type].newval != ntp->vals[type].oldval) { if (!*ab) { *ab = audit_log_start(context, GFP_KERNEL, AUDIT_TIME_ADJNTPVAL); if (!*ab) return; } audit_log_format(*ab, "op=%s old=%lli new=%lli", ntp_name[type], ntp->vals[type].oldval, ntp->vals[type].newval); audit_log_end(*ab); *ab = NULL; } } } if (tk->tv_sec != 0 || tk->tv_nsec != 0) { if (!*ab) { *ab = audit_log_start(context, GFP_KERNEL, AUDIT_TIME_INJOFFSET); if (!*ab) return; } audit_log_format(*ab, "sec=%lli nsec=%li", (long long)tk->tv_sec, tk->tv_nsec); audit_log_end(*ab); *ab = NULL; } } |
a33e67510 sanitize audit_ip... |
1232 |
static void show_special(struct audit_context *context, int *call_panic) |
f3298dc4f sanitize audit_so... |
1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 |
{ struct audit_buffer *ab; int i; ab = audit_log_start(context, GFP_KERNEL, context->type); if (!ab) return; switch (context->type) { case AUDIT_SOCKETCALL: { int nargs = context->socketcall.nargs; |
254c8b96c audit: add blank ... |
1244 |
|
f3298dc4f sanitize audit_so... |
1245 1246 1247 1248 1249 |
audit_log_format(ab, "nargs=%d", nargs); for (i = 0; i < nargs; i++) audit_log_format(ab, " a%d=%lx", i, context->socketcall.args[i]); break; } |
a33e67510 sanitize audit_ip... |
1250 1251 |
case AUDIT_IPC: { u32 osid = context->ipc.osid; |
2570ebbd1 switch kern_ipc_p... |
1252 |
audit_log_format(ab, "ouid=%u ogid=%u mode=%#ho", |
cca080d9b userns: Convert a... |
1253 1254 1255 |
from_kuid(&init_user_ns, context->ipc.uid), from_kgid(&init_user_ns, context->ipc.gid), context->ipc.mode); |
a33e67510 sanitize audit_ip... |
1256 1257 1258 |
if (osid) { char *ctx = NULL; u32 len; |
254c8b96c audit: add blank ... |
1259 |
|
a33e67510 sanitize audit_ip... |
1260 1261 1262 1263 1264 1265 1266 1267 |
if (security_secid_to_secctx(osid, &ctx, &len)) { audit_log_format(ab, " osid=%u", osid); *call_panic = 1; } else { audit_log_format(ab, " obj=%s", ctx); security_release_secctx(ctx, len); } } |
e816f370c sanitize audit_ip... |
1268 1269 1270 1271 |
if (context->ipc.has_perm) { audit_log_end(ab); ab = audit_log_start(context, GFP_KERNEL, AUDIT_IPC_SET_PERM); |
0644ec0cc audit: catch poss... |
1272 1273 |
if (unlikely(!ab)) return; |
e816f370c sanitize audit_ip... |
1274 |
audit_log_format(ab, |
2570ebbd1 switch kern_ipc_p... |
1275 |
"qbytes=%lx ouid=%u ogid=%u mode=%#ho", |
e816f370c sanitize audit_ip... |
1276 1277 1278 1279 |
context->ipc.qbytes, context->ipc.perm_uid, context->ipc.perm_gid, context->ipc.perm_mode); |
e816f370c sanitize audit_ip... |
1280 |
} |
a33e67510 sanitize audit_ip... |
1281 |
break; } |
fe8e52b9b audit: remove unn... |
1282 |
case AUDIT_MQ_OPEN: |
564f6993f sanitize audit_mq... |
1283 |
audit_log_format(ab, |
df0a42837 switch mq_open() ... |
1284 |
"oflag=0x%x mode=%#ho mq_flags=0x%lx mq_maxmsg=%ld " |
564f6993f sanitize audit_mq... |
1285 1286 1287 1288 1289 1290 |
"mq_msgsize=%ld mq_curmsgs=%ld", context->mq_open.oflag, context->mq_open.mode, context->mq_open.attr.mq_flags, context->mq_open.attr.mq_maxmsg, context->mq_open.attr.mq_msgsize, context->mq_open.attr.mq_curmsgs); |
fe8e52b9b audit: remove unn... |
1291 1292 |
break; case AUDIT_MQ_SENDRECV: |
c32c8af43 sanitize AUDIT_MQ... |
1293 1294 |
audit_log_format(ab, "mqdes=%d msg_len=%zd msg_prio=%u " |
b90477263 ipc: mqueue: Repl... |
1295 |
"abs_timeout_sec=%lld abs_timeout_nsec=%ld", |
c32c8af43 sanitize AUDIT_MQ... |
1296 1297 1298 |
context->mq_sendrecv.mqdes, context->mq_sendrecv.msg_len, context->mq_sendrecv.msg_prio, |
b90477263 ipc: mqueue: Repl... |
1299 |
(long long) context->mq_sendrecv.abs_timeout.tv_sec, |
c32c8af43 sanitize AUDIT_MQ... |
1300 |
context->mq_sendrecv.abs_timeout.tv_nsec); |
fe8e52b9b audit: remove unn... |
1301 1302 |
break; case AUDIT_MQ_NOTIFY: |
20114f71b sanitize audit_mq... |
1303 1304 1305 |
audit_log_format(ab, "mqdes=%d sigev_signo=%d", context->mq_notify.mqdes, context->mq_notify.sigev_signo); |
fe8e52b9b audit: remove unn... |
1306 |
break; |
7392906ea sanitize audit_mq... |
1307 1308 |
case AUDIT_MQ_GETSETATTR: { struct mq_attr *attr = &context->mq_getsetattr.mqstat; |
254c8b96c audit: add blank ... |
1309 |
|
7392906ea sanitize audit_mq... |
1310 1311 1312 1313 1314 1315 1316 |
audit_log_format(ab, "mqdes=%d mq_flags=0x%lx mq_maxmsg=%ld mq_msgsize=%ld " "mq_curmsgs=%ld ", context->mq_getsetattr.mqdes, attr->mq_flags, attr->mq_maxmsg, attr->mq_msgsize, attr->mq_curmsgs); break; } |
fe8e52b9b audit: remove unn... |
1317 |
case AUDIT_CAPSET: |
57f71a0af sanitize audit_lo... |
1318 1319 1320 1321 |
audit_log_format(ab, "pid=%d", context->capset.pid); audit_log_cap(ab, "cap_pi", &context->capset.cap.inheritable); audit_log_cap(ab, "cap_pp", &context->capset.cap.permitted); audit_log_cap(ab, "cap_pe", &context->capset.cap.effective); |
7786f6b6d audit: add ambien... |
1322 |
audit_log_cap(ab, "cap_pa", &context->capset.cap.ambient); |
fe8e52b9b audit: remove unn... |
1323 1324 |
break; case AUDIT_MMAP: |
120a795da audit mmap |
1325 1326 |
audit_log_format(ab, "fd=%d flags=0x%x", context->mmap.fd, context->mmap.flags); |
fe8e52b9b audit: remove unn... |
1327 1328 |
break; case AUDIT_EXECVE: |
d9cfea91e audit: move audit... |
1329 |
audit_log_execve_info(context, &ab); |
fe8e52b9b audit: remove unn... |
1330 |
break; |
ca86cad73 audit: log module... |
1331 1332 |
case AUDIT_KERN_MODULE: audit_log_format(ab, "name="); |
b305f7ed0 audit: fix potent... |
1333 1334 |
if (context->module.name) { audit_log_untrustedstring(ab, context->module.name); |
b305f7ed0 audit: fix potent... |
1335 1336 |
} else audit_log_format(ab, "(null)"); |
ca86cad73 audit: log module... |
1337 |
break; |
3a10df731 audit: log AUDIT_... |
1338 1339 1340 1341 1342 |
case AUDIT_TIME_ADJNTPVAL: case AUDIT_TIME_INJOFFSET: /* this call deviates from the rest, eating the buffer */ audit_log_time(context, &ab); break; |
f3298dc4f sanitize audit_so... |
1343 1344 1345 |
} audit_log_end(ab); } |
3f1c82502 audit: Audit proc... |
1346 1347 1348 |
static inline int audit_proctitle_rtrim(char *proctitle, int len) { char *end = proctitle + len - 1; |
254c8b96c audit: add blank ... |
1349 |
|
3f1c82502 audit: Audit proc... |
1350 1351 1352 1353 1354 1355 1356 1357 |
while (end > proctitle && !isprint(*end)) end--; /* catch the case where proctitle is only 1 non-print character */ len = end - proctitle + 1; len -= isprint(proctitle[len-1]) == 0; return len; } |
5f3d544f1 audit: remove aud... |
1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 |
/* * audit_log_name - produce AUDIT_PATH record from struct audit_names * @context: audit_context for the task * @n: audit_names structure with reportable details * @path: optional path to report instead of audit_names->name * @record_num: record number to report when handling a list of names * @call_panic: optional pointer to int that will be updated if secid fails */ static void audit_log_name(struct audit_context *context, struct audit_names *n, const struct path *path, int record_num, int *call_panic) { struct audit_buffer *ab; ab = audit_log_start(context, GFP_KERNEL, AUDIT_PATH); if (!ab) return; audit_log_format(ab, "item=%d", record_num); if (path) audit_log_d_path(ab, " name=", path); else if (n->name) { switch (n->name_len) { case AUDIT_NAME_FULL: /* log the full path */ audit_log_format(ab, " name="); audit_log_untrustedstring(ab, n->name->name); break; case 0: /* name was specified as a relative path and the * directory component is the cwd */ |
6d915476e audit: trigger ac... |
1390 1391 1392 1393 |
if (context->pwd.dentry && context->pwd.mnt) audit_log_d_path(ab, " name=", &context->pwd); else audit_log_format(ab, " name=(null)"); |
5f3d544f1 audit: remove aud... |
1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 |
break; default: /* log the name's directory component */ audit_log_format(ab, " name="); audit_log_n_untrustedstring(ab, n->name->name, n->name_len); } } else audit_log_format(ab, " name=(null)"); if (n->ino != AUDIT_INO_UNSET) audit_log_format(ab, " inode=%lu dev=%02x:%02x mode=%#ho ouid=%u ogid=%u rdev=%02x:%02x", n->ino, MAJOR(n->dev), MINOR(n->dev), n->mode, from_kuid(&init_user_ns, n->uid), from_kgid(&init_user_ns, n->gid), MAJOR(n->rdev), MINOR(n->rdev)); if (n->osid != 0) { char *ctx = NULL; u32 len; if (security_secid_to_secctx( n->osid, &ctx, &len)) { audit_log_format(ab, " osid=%u", n->osid); if (call_panic) *call_panic = 2; } else { audit_log_format(ab, " obj=%s", ctx); security_release_secctx(ctx, len); } } /* log the audit_names record type */ switch (n->type) { case AUDIT_TYPE_NORMAL: audit_log_format(ab, " nametype=NORMAL"); break; case AUDIT_TYPE_PARENT: audit_log_format(ab, " nametype=PARENT"); break; case AUDIT_TYPE_CHILD_DELETE: audit_log_format(ab, " nametype=DELETE"); break; case AUDIT_TYPE_CHILD_CREATE: audit_log_format(ab, " nametype=CREATE"); break; default: audit_log_format(ab, " nametype=UNKNOWN"); break; } audit_log_fcaps(ab, n); audit_log_end(ab); } |
2a1fe215e audit: use curren... |
1451 |
static void audit_log_proctitle(void) |
3f1c82502 audit: Audit proc... |
1452 1453 1454 1455 1456 |
{ int res; char *buf; char *msg = "(null)"; int len = strlen(msg); |
2a1fe215e audit: use curren... |
1457 |
struct audit_context *context = audit_context(); |
3f1c82502 audit: Audit proc... |
1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 |
struct audit_buffer *ab; ab = audit_log_start(context, GFP_KERNEL, AUDIT_PROCTITLE); if (!ab) return; /* audit_panic or being filtered */ audit_log_format(ab, "proctitle="); /* Not cached */ if (!context->proctitle.value) { buf = kmalloc(MAX_PROCTITLE_AUDIT_LEN, GFP_KERNEL); if (!buf) goto out; /* Historically called this from procfs naming */ |
2a1fe215e audit: use curren... |
1472 |
res = get_cmdline(current, buf, MAX_PROCTITLE_AUDIT_LEN); |
3f1c82502 audit: Audit proc... |
1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 |
if (res == 0) { kfree(buf); goto out; } res = audit_proctitle_rtrim(buf, res); if (res == 0) { kfree(buf); goto out; } context->proctitle.value = buf; context->proctitle.len = res; } msg = context->proctitle.value; len = context->proctitle.len; out: audit_log_n_untrustedstring(ab, msg, len); audit_log_end(ab); } |
2a1fe215e audit: use curren... |
1491 |
static void audit_log_exit(void) |
1da177e4c Linux-2.6.12-rc2 |
1492 |
{ |
9c7aa6aa7 [PATCH] change ls... |
1493 |
int i, call_panic = 0; |
2a1fe215e audit: use curren... |
1494 |
struct audit_context *context = audit_context(); |
1da177e4c Linux-2.6.12-rc2 |
1495 |
struct audit_buffer *ab; |
7551ced33 AUDIT: Defer free... |
1496 |
struct audit_aux_data *aux; |
5195d8e21 audit: dynamicall... |
1497 |
struct audit_names *n; |
1da177e4c Linux-2.6.12-rc2 |
1498 |
|
2a1fe215e audit: use curren... |
1499 |
context->personality = current->personality; |
e495149b1 [PATCH] drop gfp_... |
1500 1501 |
ab = audit_log_start(context, GFP_KERNEL, AUDIT_SYSCALL); |
1da177e4c Linux-2.6.12-rc2 |
1502 1503 |
if (!ab) return; /* audit_panic has been called */ |
bccf6ae08 AUDIT: Unify auid... |
1504 1505 |
audit_log_format(ab, "arch=%x syscall=%d", context->arch, context->major); |
1da177e4c Linux-2.6.12-rc2 |
1506 1507 |
if (context->personality != PER_LINUX) audit_log_format(ab, " per=%lx", context->personality); |
ba59eae72 audit: fix macros... |
1508 |
if (context->return_valid != AUDITSC_INVALID) |
9f8dbe9c9 whitespace fixes:... |
1509 |
audit_log_format(ab, " success=%s exit=%ld", |
2fd6f58ba [AUDIT] Don't all... |
1510 1511 |
(context->return_valid==AUDITSC_SUCCESS)?"yes":"no", context->return_code); |
eb84a20e9 [PATCH] audit/acc... |
1512 |
|
1da177e4c Linux-2.6.12-rc2 |
1513 |
audit_log_format(ab, |
e23eb920b audit: export aud... |
1514 1515 1516 1517 1518 1519 |
" a0=%lx a1=%lx a2=%lx a3=%lx items=%d", context->argv[0], context->argv[1], context->argv[2], context->argv[3], context->name_count); |
eb84a20e9 [PATCH] audit/acc... |
1520 |
|
2a1fe215e audit: use curren... |
1521 |
audit_log_task_info(ab); |
9d9609851 Audit: clean up a... |
1522 |
audit_log_key(ab, context->filterkey); |
1da177e4c Linux-2.6.12-rc2 |
1523 |
audit_log_end(ab); |
1da177e4c Linux-2.6.12-rc2 |
1524 |
|
7551ced33 AUDIT: Defer free... |
1525 |
for (aux = context->aux; aux; aux = aux->next) { |
c04049939 AUDIT: Add messag... |
1526 |
|
e495149b1 [PATCH] drop gfp_... |
1527 |
ab = audit_log_start(context, GFP_KERNEL, aux->type); |
1da177e4c Linux-2.6.12-rc2 |
1528 1529 |
if (!ab) continue; /* audit_panic has been called */ |
1da177e4c Linux-2.6.12-rc2 |
1530 |
switch (aux->type) { |
20ca73bc7 [PATCH] Audit of ... |
1531 |
|
3fc689e96 Any time fcaps or... |
1532 1533 |
case AUDIT_BPRM_FCAPS: { struct audit_aux_data_bprm_fcaps *axs = (void *)aux; |
254c8b96c audit: add blank ... |
1534 |
|
3fc689e96 Any time fcaps or... |
1535 1536 1537 1538 1539 1540 1541 |
audit_log_format(ab, "fver=%x", axs->fcap_ver); audit_log_cap(ab, "fp", &axs->fcap.permitted); audit_log_cap(ab, "fi", &axs->fcap.inheritable); audit_log_format(ab, " fe=%d", axs->fcap.fE); audit_log_cap(ab, "old_pp", &axs->old_pcap.permitted); audit_log_cap(ab, "old_pi", &axs->old_pcap.inheritable); audit_log_cap(ab, "old_pe", &axs->old_pcap.effective); |
7786f6b6d audit: add ambien... |
1542 1543 1544 1545 1546 |
audit_log_cap(ab, "old_pa", &axs->old_pcap.ambient); audit_log_cap(ab, "pp", &axs->new_pcap.permitted); audit_log_cap(ab, "pi", &axs->new_pcap.inheritable); audit_log_cap(ab, "pe", &axs->new_pcap.effective); audit_log_cap(ab, "pa", &axs->new_pcap.ambient); |
2fec30e24 audit: add suppor... |
1547 1548 1549 |
audit_log_format(ab, " frootid=%d", from_kuid(&init_user_ns, axs->fcap.rootid)); |
3fc689e96 Any time fcaps or... |
1550 |
break; } |
1da177e4c Linux-2.6.12-rc2 |
1551 1552 |
} audit_log_end(ab); |
1da177e4c Linux-2.6.12-rc2 |
1553 |
} |
f3298dc4f sanitize audit_so... |
1554 |
if (context->type) |
a33e67510 sanitize audit_ip... |
1555 |
show_special(context, &call_panic); |
f3298dc4f sanitize audit_so... |
1556 |
|
157cf649a sanitize audit_fd... |
1557 1558 1559 1560 1561 1562 1563 1564 |
if (context->fds[0] >= 0) { ab = audit_log_start(context, GFP_KERNEL, AUDIT_FD_PAIR); if (ab) { audit_log_format(ab, "fd0=%d fd1=%d", context->fds[0], context->fds[1]); audit_log_end(ab); } } |
4f6b434fe don't reallocate ... |
1565 1566 1567 1568 1569 1570 1571 1572 1573 |
if (context->sockaddr_len) { ab = audit_log_start(context, GFP_KERNEL, AUDIT_SOCKADDR); if (ab) { audit_log_format(ab, "saddr="); audit_log_n_hex(ab, (void *)context->sockaddr, context->sockaddr_len); audit_log_end(ab); } } |
e54dc2431 [PATCH] audit sig... |
1574 1575 |
for (aux = context->aux_pids; aux; aux = aux->next) { struct audit_aux_data_pids *axs = (void *)aux; |
e54dc2431 [PATCH] audit sig... |
1576 1577 1578 |
for (i = 0; i < axs->pid_count; i++) if (audit_log_pid_context(context, axs->target_pid[i], |
c2a7780ef [AUDIT] collect u... |
1579 1580 |
axs->target_auid[i], axs->target_uid[i], |
4746ec5b0 [AUDIT] add sessi... |
1581 |
axs->target_sessionid[i], |
c2a7780ef [AUDIT] collect u... |
1582 1583 |
axs->target_sid[i], axs->target_comm[i])) |
e54dc2431 [PATCH] audit sig... |
1584 |
call_panic = 1; |
a5cb013da [PATCH] auditing ... |
1585 |
} |
e54dc2431 [PATCH] audit sig... |
1586 1587 |
if (context->target_pid && audit_log_pid_context(context, context->target_pid, |
c2a7780ef [AUDIT] collect u... |
1588 |
context->target_auid, context->target_uid, |
4746ec5b0 [AUDIT] add sessi... |
1589 |
context->target_sessionid, |
c2a7780ef [AUDIT] collect u... |
1590 |
context->target_sid, context->target_comm)) |
e54dc2431 [PATCH] audit sig... |
1591 |
call_panic = 1; |
44707fdf5 d_path: Use struc... |
1592 |
if (context->pwd.dentry && context->pwd.mnt) { |
e495149b1 [PATCH] drop gfp_... |
1593 |
ab = audit_log_start(context, GFP_KERNEL, AUDIT_CWD); |
8f37d47c9 AUDIT: Record wor... |
1594 |
if (ab) { |
0b7a0fdb2 audit: fix whites... |
1595 |
audit_log_d_path(ab, "cwd=", &context->pwd); |
8f37d47c9 AUDIT: Record wor... |
1596 1597 1598 |
audit_log_end(ab); } } |
73241ccca [PATCH] Collect m... |
1599 |
|
5195d8e21 audit: dynamicall... |
1600 |
i = 0; |
79f6530cb audit: fix mq_ope... |
1601 1602 1603 |
list_for_each_entry(n, &context->names_list, list) { if (n->hidden) continue; |
b24a30a73 audit: fix event ... |
1604 |
audit_log_name(context, n, NULL, i++, &call_panic); |
79f6530cb audit: fix mq_ope... |
1605 |
} |
c0641f28d [AUDIT] Add End o... |
1606 |
|
2a1fe215e audit: use curren... |
1607 |
audit_log_proctitle(); |
3f1c82502 audit: Audit proc... |
1608 |
|
c0641f28d [AUDIT] Add End o... |
1609 1610 1611 1612 |
/* Send end of event record to help user space know we are finished */ ab = audit_log_start(context, GFP_KERNEL, AUDIT_EOE); if (ab) audit_log_end(ab); |
9c7aa6aa7 [PATCH] change ls... |
1613 1614 |
if (call_panic) audit_panic("error converting sid to string"); |
1da177e4c Linux-2.6.12-rc2 |
1615 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
1616 |
/** |
196a50855 audit: update the... |
1617 |
* __audit_free - free a per-task audit context |
b0dd25a82 [PATCH] AUDIT: ke... |
1618 1619 |
* @tsk: task whose audit context block to free * |
fa84cb935 [PATCH] move call... |
1620 |
* Called from copy_process and do_exit |
b0dd25a82 [PATCH] AUDIT: ke... |
1621 |
*/ |
a4ff8dba7 audit: inline aud... |
1622 |
void __audit_free(struct task_struct *tsk) |
1da177e4c Linux-2.6.12-rc2 |
1623 |
{ |
2a1fe215e audit: use curren... |
1624 |
struct audit_context *context = tsk->audit_context; |
1da177e4c Linux-2.6.12-rc2 |
1625 |
|
56179a6ec audit: drop some ... |
1626 |
if (!context) |
1da177e4c Linux-2.6.12-rc2 |
1627 |
return; |
9e36a5d49 audit: hand taken... |
1628 1629 |
if (!list_empty(&context->killed_trees)) audit_kill_trees(context); |
2a1fe215e audit: use curren... |
1630 1631 1632 1633 1634 1635 |
/* We are called either by do_exit() or the fork() error handling code; * in the former case tsk == current and in the latter tsk is a * random task_struct that doesn't doesn't have any meaningful data we * need to log via audit_log_exit(). */ if (tsk == current && !context->dummy && context->in_syscall) { |
ba59eae72 audit: fix macros... |
1636 |
context->return_valid = AUDITSC_INVALID; |
2a1fe215e audit: use curren... |
1637 |
context->return_code = 0; |
5504a69a4 audit: further cl... |
1638 |
audit_filter_syscall(tsk, context); |
2a1fe215e audit: use curren... |
1639 |
audit_filter_inodes(tsk, context); |
619ed58ac audit: Rename enu... |
1640 |
if (context->current_state == AUDIT_STATE_RECORD) |
2a1fe215e audit: use curren... |
1641 1642 |
audit_log_exit(); } |
2a1fe215e audit: use curren... |
1643 |
audit_set_context(tsk, NULL); |
1da177e4c Linux-2.6.12-rc2 |
1644 1645 |
audit_free_context(context); } |
b0dd25a82 [PATCH] AUDIT: ke... |
1646 |
/** |
196a50855 audit: update the... |
1647 |
* __audit_syscall_entry - fill in an audit record at syscall entry |
b0dd25a82 [PATCH] AUDIT: ke... |
1648 1649 1650 1651 1652 1653 1654 |
* @major: major syscall type (function) * @a1: additional syscall register 1 * @a2: additional syscall register 2 * @a3: additional syscall register 3 * @a4: additional syscall register 4 * * Fill in audit context at syscall entry. This only happens if the |
1da177e4c Linux-2.6.12-rc2 |
1655 1656 |
* audit context was created when the task was created and the state or * filters demand the audit context be built. If the state from the |
619ed58ac audit: Rename enu... |
1657 |
* per-task filter or from the per-syscall filter is AUDIT_STATE_RECORD, |
1da177e4c Linux-2.6.12-rc2 |
1658 1659 |
* then the record will be written at syscall exit time (otherwise, it * will only be written if another part of the kernel requests that it |
b0dd25a82 [PATCH] AUDIT: ke... |
1660 1661 |
* be written). */ |
b4f0d3755 audit: x86: drop ... |
1662 1663 |
void __audit_syscall_entry(int major, unsigned long a1, unsigned long a2, unsigned long a3, unsigned long a4) |
1da177e4c Linux-2.6.12-rc2 |
1664 |
{ |
cdfb6b341 audit: use inline... |
1665 |
struct audit_context *context = audit_context(); |
1da177e4c Linux-2.6.12-rc2 |
1666 |
enum audit_state state; |
94d14e3e7 audit: bail befor... |
1667 |
if (!audit_enabled || !context) |
86a1c34a9 x86_64 syscall au... |
1668 |
return; |
1da177e4c Linux-2.6.12-rc2 |
1669 |
|
1da177e4c Linux-2.6.12-rc2 |
1670 |
BUG_ON(context->in_syscall || context->name_count); |
1da177e4c Linux-2.6.12-rc2 |
1671 |
state = context->state; |
619ed58ac audit: Rename enu... |
1672 |
if (state == AUDIT_STATE_DISABLED) |
5260ecc2e audit: deprecate ... |
1673 |
return; |
d51374adf [PATCH] mark cont... |
1674 |
context->dummy = !audit_n_rules; |
619ed58ac audit: Rename enu... |
1675 |
if (!context->dummy && state == AUDIT_STATE_BUILD) { |
0590b9335 fixing audit rule... |
1676 |
context->prio = 0; |
cdfb6b341 audit: use inline... |
1677 |
if (auditd_test_task(current)) |
5260ecc2e audit: deprecate ... |
1678 |
return; |
0590b9335 fixing audit rule... |
1679 |
} |
1da177e4c Linux-2.6.12-rc2 |
1680 |
|
16add4116 syscall_get_arch:... |
1681 |
context->arch = syscall_get_arch(current); |
5260ecc2e audit: deprecate ... |
1682 1683 1684 1685 1686 |
context->major = major; context->argv[0] = a1; context->argv[1] = a2; context->argv[2] = a3; context->argv[3] = a4; |
ce625a801 AUDIT: Reduce con... |
1687 |
context->serial = 0; |
1da177e4c Linux-2.6.12-rc2 |
1688 |
context->in_syscall = 1; |
0590b9335 fixing audit rule... |
1689 |
context->current_state = state; |
419c58f11 [PATCH] PPID filt... |
1690 |
context->ppid = 0; |
290e44b7d audit: use ktime_... |
1691 |
ktime_get_coarse_real_ts64(&context->ctime); |
1da177e4c Linux-2.6.12-rc2 |
1692 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
1693 |
/** |
196a50855 audit: update the... |
1694 |
* __audit_syscall_exit - deallocate audit context after a system call |
42ae610c1 kernel-doc: fix n... |
1695 1696 |
* @success: success value of the syscall * @return_code: return value of the syscall |
b0dd25a82 [PATCH] AUDIT: ke... |
1697 1698 |
* * Tear down after system call. If the audit context has been marked as |
619ed58ac audit: Rename enu... |
1699 |
* auditable (either because of the AUDIT_STATE_RECORD state from |
42ae610c1 kernel-doc: fix n... |
1700 |
* filtering, or because some other part of the kernel wrote an audit |
1da177e4c Linux-2.6.12-rc2 |
1701 |
* message), then write out the syscall information. In call cases, |
b0dd25a82 [PATCH] AUDIT: ke... |
1702 1703 |
* free the names stored from getname(). */ |
d7e7528bc Audit: push audit... |
1704 |
void __audit_syscall_exit(int success, long return_code) |
1da177e4c Linux-2.6.12-rc2 |
1705 1706 |
{ struct audit_context *context; |
2a1fe215e audit: use curren... |
1707 |
context = audit_context(); |
56179a6ec audit: drop some ... |
1708 |
if (!context) |
97e94c453 [PATCH] no need t... |
1709 |
return; |
1da177e4c Linux-2.6.12-rc2 |
1710 |
|
9e36a5d49 audit: hand taken... |
1711 1712 |
if (!list_empty(&context->killed_trees)) audit_kill_trees(context); |
2a1fe215e audit: use curren... |
1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 |
if (!context->dummy && context->in_syscall) { if (success) context->return_valid = AUDITSC_SUCCESS; else context->return_valid = AUDITSC_FAILURE; /* * we need to fix up the return code in the audit logs if the * actual return codes are later going to be fixed up by the * arch specific signal handlers * * This is actually a test for: * (rc == ERESTARTSYS ) || (rc == ERESTARTNOINTR) || * (rc == ERESTARTNOHAND) || (rc == ERESTART_RESTARTBLOCK) * * but is faster than a bunch of || */ if (unlikely(return_code <= -ERESTARTSYS) && (return_code >= -ERESTART_RESTARTBLOCK) && (return_code != -ENOIOCTLCMD)) context->return_code = -EINTR; else context->return_code = return_code; |
5504a69a4 audit: further cl... |
1736 |
audit_filter_syscall(current, context); |
2a1fe215e audit: use curren... |
1737 |
audit_filter_inodes(current, context); |
619ed58ac audit: Rename enu... |
1738 |
if (context->current_state == AUDIT_STATE_RECORD) |
2a1fe215e audit: use curren... |
1739 1740 |
audit_log_exit(); } |
1da177e4c Linux-2.6.12-rc2 |
1741 1742 |
context->in_syscall = 0; |
619ed58ac audit: Rename enu... |
1743 |
context->prio = context->state == AUDIT_STATE_RECORD ? ~0ULL : 0; |
2fd6f58ba [AUDIT] Don't all... |
1744 |
|
95e0b46fc audit: fix a meml... |
1745 |
audit_free_module(context); |
c62d773a3 audit: no nested ... |
1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 |
audit_free_names(context); unroll_tree_refs(context, NULL, 0); audit_free_aux(context); context->aux = NULL; context->aux_pids = NULL; context->target_pid = 0; context->target_sid = 0; context->sockaddr_len = 0; context->type = 0; context->fds[0] = -1; |
619ed58ac audit: Rename enu... |
1756 |
if (context->state != AUDIT_STATE_RECORD) { |
c62d773a3 audit: no nested ... |
1757 1758 |
kfree(context->filterkey); context->filterkey = NULL; |
1da177e4c Linux-2.6.12-rc2 |
1759 |
} |
1da177e4c Linux-2.6.12-rc2 |
1760 |
} |
74c3cbe33 [PATCH] audit: wa... |
1761 1762 |
static inline void handle_one(const struct inode *inode) { |
74c3cbe33 [PATCH] audit: wa... |
1763 1764 1765 1766 |
struct audit_context *context; struct audit_tree_refs *p; struct audit_chunk *chunk; int count; |
254c8b96c audit: add blank ... |
1767 |
|
08991e83b fsnotify: Free fs... |
1768 |
if (likely(!inode->i_fsnotify_marks)) |
74c3cbe33 [PATCH] audit: wa... |
1769 |
return; |
cdfb6b341 audit: use inline... |
1770 |
context = audit_context(); |
74c3cbe33 [PATCH] audit: wa... |
1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 |
p = context->trees; count = context->tree_count; rcu_read_lock(); chunk = audit_tree_lookup(inode); rcu_read_unlock(); if (!chunk) return; if (likely(put_tree_ref(context, chunk))) return; if (unlikely(!grow_tree_refs(context))) { |
f952d10ff audit: Use more c... |
1781 1782 |
pr_warn("out of memory, audit has lost a tree reference "); |
74c3cbe33 [PATCH] audit: wa... |
1783 1784 1785 1786 1787 1788 |
audit_set_auditable(context); audit_put_chunk(chunk); unroll_tree_refs(context, p, count); return; } put_tree_ref(context, chunk); |
74c3cbe33 [PATCH] audit: wa... |
1789 1790 1791 1792 |
} static void handle_path(const struct dentry *dentry) { |
74c3cbe33 [PATCH] audit: wa... |
1793 1794 1795 1796 1797 1798 |
struct audit_context *context; struct audit_tree_refs *p; const struct dentry *d, *parent; struct audit_chunk *drop; unsigned long seq; int count; |
cdfb6b341 audit: use inline... |
1799 |
context = audit_context(); |
74c3cbe33 [PATCH] audit: wa... |
1800 1801 1802 1803 1804 1805 1806 1807 |
p = context->trees; count = context->tree_count; retry: drop = NULL; d = dentry; rcu_read_lock(); seq = read_seqbegin(&rename_lock); for(;;) { |
3b362157b VFS: audit: d_bac... |
1808 |
struct inode *inode = d_backing_inode(d); |
254c8b96c audit: add blank ... |
1809 |
|
08991e83b fsnotify: Free fs... |
1810 |
if (inode && unlikely(inode->i_fsnotify_marks)) { |
74c3cbe33 [PATCH] audit: wa... |
1811 |
struct audit_chunk *chunk; |
254c8b96c audit: add blank ... |
1812 |
|
74c3cbe33 [PATCH] audit: wa... |
1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 |
chunk = audit_tree_lookup(inode); if (chunk) { if (unlikely(!put_tree_ref(context, chunk))) { drop = chunk; break; } } } parent = d->d_parent; if (parent == d) break; d = parent; } if (unlikely(read_seqretry(&rename_lock, seq) || drop)) { /* in this order */ rcu_read_unlock(); if (!drop) { /* just a race with rename */ unroll_tree_refs(context, p, count); goto retry; } audit_put_chunk(drop); if (grow_tree_refs(context)) { /* OK, got more space */ unroll_tree_refs(context, p, count); goto retry; } /* too bad */ |
f952d10ff audit: Use more c... |
1840 1841 |
pr_warn("out of memory, audit has lost a tree reference "); |
74c3cbe33 [PATCH] audit: wa... |
1842 1843 1844 1845 1846 |
unroll_tree_refs(context, p, count); audit_set_auditable(context); return; } rcu_read_unlock(); |
74c3cbe33 [PATCH] audit: wa... |
1847 |
} |
78e2e802a audit: add a new ... |
1848 1849 |
static struct audit_names *audit_alloc_name(struct audit_context *context, unsigned char type) |
5195d8e21 audit: dynamicall... |
1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 |
{ struct audit_names *aname; if (context->name_count < AUDIT_NAMES) { aname = &context->preallocated_names[context->name_count]; memset(aname, 0, sizeof(*aname)); } else { aname = kzalloc(sizeof(*aname), GFP_NOFS); if (!aname) return NULL; aname->should_free = true; } |
84cb777e6 audit: use macros... |
1862 |
aname->ino = AUDIT_INO_UNSET; |
78e2e802a audit: add a new ... |
1863 |
aname->type = type; |
5195d8e21 audit: dynamicall... |
1864 1865 1866 |
list_add_tail(&aname->list, &context->names_list); context->name_count++; |
6d915476e audit: trigger ac... |
1867 1868 |
if (!context->pwd.dentry) get_fs_pwd(current->fs, &context->pwd); |
5195d8e21 audit: dynamicall... |
1869 1870 |
return aname; } |
b0dd25a82 [PATCH] AUDIT: ke... |
1871 |
/** |
196a50855 audit: update the... |
1872 |
* __audit_reusename - fill out filename with info from existing entry |
7ac86265d audit: allow audi... |
1873 1874 1875 1876 1877 1878 1879 1880 1881 |
* @uptr: userland ptr to pathname * * Search the audit_names list for the current audit context. If there is an * existing entry with a matching "uptr" then return the filename * associated with that audit_name. If not, return NULL. */ struct filename * __audit_reusename(const __user char *uptr) { |
cdfb6b341 audit: use inline... |
1882 |
struct audit_context *context = audit_context(); |
7ac86265d audit: allow audi... |
1883 1884 1885 1886 1887 |
struct audit_names *n; list_for_each_entry(n, &context->names_list, list) { if (!n->name) continue; |
55422d0bd audit: replace ge... |
1888 1889 |
if (n->name->uptr == uptr) { n->name->refcnt++; |
7ac86265d audit: allow audi... |
1890 |
return n->name; |
55422d0bd audit: replace ge... |
1891 |
} |
7ac86265d audit: allow audi... |
1892 1893 1894 1895 1896 |
} return NULL; } /** |
196a50855 audit: update the... |
1897 |
* __audit_getname - add a name to the list |
b0dd25a82 [PATCH] AUDIT: ke... |
1898 1899 1900 1901 1902 |
* @name: name to add * * Add a name to the list of audit names for this context. * Called from fs/namei.c:getname(). */ |
91a27b2a7 vfs: define struc... |
1903 |
void __audit_getname(struct filename *name) |
1da177e4c Linux-2.6.12-rc2 |
1904 |
{ |
cdfb6b341 audit: use inline... |
1905 |
struct audit_context *context = audit_context(); |
5195d8e21 audit: dynamicall... |
1906 |
struct audit_names *n; |
1da177e4c Linux-2.6.12-rc2 |
1907 |
|
55422d0bd audit: replace ge... |
1908 |
if (!context->in_syscall) |
1da177e4c Linux-2.6.12-rc2 |
1909 |
return; |
91a27b2a7 vfs: define struc... |
1910 |
|
78e2e802a audit: add a new ... |
1911 |
n = audit_alloc_name(context, AUDIT_TYPE_UNKNOWN); |
5195d8e21 audit: dynamicall... |
1912 1913 1914 1915 1916 |
if (!n) return; n->name = name; n->name_len = AUDIT_NAME_FULL; |
adb5c2473 audit: make audit... |
1917 |
name->aname = n; |
55422d0bd audit: replace ge... |
1918 |
name->refcnt++; |
1da177e4c Linux-2.6.12-rc2 |
1919 |
} |
5f3d544f1 audit: remove aud... |
1920 1921 1922 1923 1924 1925 1926 1927 |
static inline int audit_copy_fcaps(struct audit_names *name, const struct dentry *dentry) { struct cpu_vfs_cap_data caps; int rc; if (!dentry) return 0; |
71bc356f9 commoncap: handle... |
1928 |
rc = get_vfs_caps_from_disk(&init_user_ns, dentry, &caps); |
5f3d544f1 audit: remove aud... |
1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 |
if (rc) return rc; name->fcap.permitted = caps.permitted; name->fcap.inheritable = caps.inheritable; name->fcap.fE = !!(caps.magic_etc & VFS_CAP_FLAGS_EFFECTIVE); name->fcap.rootid = caps.rootid; name->fcap_ver = (caps.magic_etc & VFS_CAP_REVISION_MASK) >> VFS_CAP_REVISION_SHIFT; return 0; } /* Copy inode data into an audit_names. */ |
2efa48fec audit: Make audit... |
1943 1944 1945 |
static void audit_copy_inode(struct audit_names *name, const struct dentry *dentry, struct inode *inode, unsigned int flags) |
5f3d544f1 audit: remove aud... |
1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 |
{ name->ino = inode->i_ino; name->dev = inode->i_sb->s_dev; name->mode = inode->i_mode; name->uid = inode->i_uid; name->gid = inode->i_gid; name->rdev = inode->i_rdev; security_inode_getsecid(inode, &name->osid); if (flags & AUDIT_INODE_NOEVAL) { name->fcap_ver = -1; return; } audit_copy_fcaps(name, dentry); } |
b0dd25a82 [PATCH] AUDIT: ke... |
1960 |
/** |
bfcec7087 audit: set the na... |
1961 |
* __audit_inode - store the inode and device from a lookup |
b0dd25a82 [PATCH] AUDIT: ke... |
1962 |
* @name: name being audited |
481968f44 auditsc: fix kern... |
1963 |
* @dentry: dentry being audited |
79f6530cb audit: fix mq_ope... |
1964 |
* @flags: attributes for this particular entry |
b0dd25a82 [PATCH] AUDIT: ke... |
1965 |
*/ |
adb5c2473 audit: make audit... |
1966 |
void __audit_inode(struct filename *name, const struct dentry *dentry, |
79f6530cb audit: fix mq_ope... |
1967 |
unsigned int flags) |
1da177e4c Linux-2.6.12-rc2 |
1968 |
{ |
cdfb6b341 audit: use inline... |
1969 |
struct audit_context *context = audit_context(); |
d6335d77a security: Make in... |
1970 |
struct inode *inode = d_backing_inode(dentry); |
5195d8e21 audit: dynamicall... |
1971 |
struct audit_names *n; |
79f6530cb audit: fix mq_ope... |
1972 |
bool parent = flags & AUDIT_INODE_PARENT; |
a252f56a3 audit: more filte... |
1973 1974 1975 |
struct audit_entry *e; struct list_head *list = &audit_filter_list[AUDIT_FILTER_FS]; int i; |
1da177e4c Linux-2.6.12-rc2 |
1976 1977 1978 |
if (!context->in_syscall) return; |
5195d8e21 audit: dynamicall... |
1979 |
|
a252f56a3 audit: more filte... |
1980 |
rcu_read_lock(); |
699c1868a audit: purge unne... |
1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 |
list_for_each_entry_rcu(e, list, list) { for (i = 0; i < e->rule.field_count; i++) { struct audit_field *f = &e->rule.fields[i]; if (f->type == AUDIT_FSTYPE && audit_comparator(inode->i_sb->s_magic, f->op, f->val) && e->rule.action == AUDIT_NEVER) { rcu_read_unlock(); return; |
a252f56a3 audit: more filte... |
1991 1992 1993 1994 |
} } } rcu_read_unlock(); |
9cec9d68a audit: no need to... |
1995 1996 |
if (!name) goto out_alloc; |
adb5c2473 audit: make audit... |
1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 |
/* * If we have a pointer to an audit_names entry already, then we can * just use it directly if the type is correct. */ n = name->aname; if (n) { if (parent) { if (n->type == AUDIT_TYPE_PARENT || n->type == AUDIT_TYPE_UNKNOWN) goto out; } else { if (n->type != AUDIT_TYPE_PARENT) goto out; } } |
5195d8e21 audit: dynamicall... |
2012 |
list_for_each_entry_reverse(n, &context->names_list, list) { |
57c59f583 audit: fix filena... |
2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 |
if (n->ino) { /* valid inode number, use that for the comparison */ if (n->ino != inode->i_ino || n->dev != inode->i_sb->s_dev) continue; } else if (n->name) { /* inode number has not been set, check the name */ if (strcmp(n->name->name, name->name)) continue; } else /* no inode and no name (?!) ... this is odd ... */ |
bfcec7087 audit: set the na... |
2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 |
continue; /* match the correct record type */ if (parent) { if (n->type == AUDIT_TYPE_PARENT || n->type == AUDIT_TYPE_UNKNOWN) goto out; } else { if (n->type != AUDIT_TYPE_PARENT) goto out; } |
1da177e4c Linux-2.6.12-rc2 |
2035 |
} |
5195d8e21 audit: dynamicall... |
2036 |
|
9cec9d68a audit: no need to... |
2037 |
out_alloc: |
4a9284360 audit: correctly ... |
2038 2039 |
/* unable to find an entry with both a matching name and type */ n = audit_alloc_name(context, AUDIT_TYPE_UNKNOWN); |
5195d8e21 audit: dynamicall... |
2040 2041 |
if (!n) return; |
fcf22d826 audit: create pri... |
2042 |
if (name) { |
fd3522fdc audit: enable fil... |
2043 |
n->name = name; |
55422d0bd audit: replace ge... |
2044 |
name->refcnt++; |
fcf22d826 audit: create pri... |
2045 |
} |
4a9284360 audit: correctly ... |
2046 |
|
5195d8e21 audit: dynamicall... |
2047 |
out: |
bfcec7087 audit: set the na... |
2048 |
if (parent) { |
91a27b2a7 vfs: define struc... |
2049 |
n->name_len = n->name ? parent_len(n->name->name) : AUDIT_NAME_FULL; |
bfcec7087 audit: set the na... |
2050 |
n->type = AUDIT_TYPE_PARENT; |
79f6530cb audit: fix mq_ope... |
2051 2052 |
if (flags & AUDIT_INODE_HIDDEN) n->hidden = true; |
bfcec7087 audit: set the na... |
2053 2054 2055 2056 |
} else { n->name_len = AUDIT_NAME_FULL; n->type = AUDIT_TYPE_NORMAL; } |
74c3cbe33 [PATCH] audit: wa... |
2057 |
handle_path(dentry); |
57d465771 audit: ignore fca... |
2058 |
audit_copy_inode(n, dentry, inode, flags & AUDIT_INODE_NOEVAL); |
73241ccca [PATCH] Collect m... |
2059 |
} |
9f45f5bf3 new helper: audit... |
2060 2061 2062 2063 |
void __audit_file(const struct file *file) { __audit_inode(NULL, file->f_path.dentry, 0); } |
73241ccca [PATCH] Collect m... |
2064 |
/** |
c43a25abb audit: reverse ar... |
2065 |
* __audit_inode_child - collect inode info for created/removed objects |
73d3ec5ab [PATCH] fix misse... |
2066 |
* @parent: inode of dentry parent |
c43a25abb audit: reverse ar... |
2067 |
* @dentry: dentry being audited |
4fa6b5ecb audit: overhaul _... |
2068 |
* @type: AUDIT_TYPE_* value that we're looking for |
73241ccca [PATCH] Collect m... |
2069 2070 2071 2072 2073 2074 2075 2076 2077 |
* * For syscalls that create or remove filesystem objects, audit_inode * can only collect information for the filesystem object's parent. * This call updates the audit context with the child's information. * Syscalls that create a new filesystem object must be hooked after * the object is created. Syscalls that remove a filesystem object * must be hooked prior, in order to capture the target inode during * unsuccessful attempts. */ |
d6335d77a security: Make in... |
2078 |
void __audit_inode_child(struct inode *parent, |
4fa6b5ecb audit: overhaul _... |
2079 2080 |
const struct dentry *dentry, const unsigned char type) |
73241ccca [PATCH] Collect m... |
2081 |
{ |
cdfb6b341 audit: use inline... |
2082 |
struct audit_context *context = audit_context(); |
d6335d77a security: Make in... |
2083 |
struct inode *inode = d_backing_inode(dentry); |
795d673af audit_compare_dna... |
2084 |
const struct qstr *dname = &dentry->d_name; |
4fa6b5ecb audit: overhaul _... |
2085 |
struct audit_names *n, *found_parent = NULL, *found_child = NULL; |
42d5e3765 audit: filter PAT... |
2086 2087 2088 |
struct audit_entry *e; struct list_head *list = &audit_filter_list[AUDIT_FILTER_FS]; int i; |
73241ccca [PATCH] Collect m... |
2089 2090 2091 |
if (!context->in_syscall) return; |
42d5e3765 audit: filter PAT... |
2092 |
rcu_read_lock(); |
699c1868a audit: purge unne... |
2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 |
list_for_each_entry_rcu(e, list, list) { for (i = 0; i < e->rule.field_count; i++) { struct audit_field *f = &e->rule.fields[i]; if (f->type == AUDIT_FSTYPE && audit_comparator(parent->i_sb->s_magic, f->op, f->val) && e->rule.action == AUDIT_NEVER) { rcu_read_unlock(); return; |
42d5e3765 audit: filter PAT... |
2103 2104 2105 2106 |
} } } rcu_read_unlock(); |
74c3cbe33 [PATCH] audit: wa... |
2107 2108 |
if (inode) handle_one(inode); |
73241ccca [PATCH] Collect m... |
2109 |
|
4fa6b5ecb audit: overhaul _... |
2110 |
/* look for a parent entry first */ |
5195d8e21 audit: dynamicall... |
2111 |
list_for_each_entry(n, &context->names_list, list) { |
57c59f583 audit: fix filena... |
2112 2113 2114 |
if (!n->name || (n->type != AUDIT_TYPE_PARENT && n->type != AUDIT_TYPE_UNKNOWN)) |
5712e88f2 [PATCH] match aud... |
2115 |
continue; |
57c59f583 audit: fix filena... |
2116 2117 2118 2119 2120 |
if (n->ino == parent->i_ino && n->dev == parent->i_sb->s_dev && !audit_compare_dname_path(dname, n->name->name, n->name_len)) { if (n->type == AUDIT_TYPE_UNKNOWN) n->type = AUDIT_TYPE_PARENT; |
4fa6b5ecb audit: overhaul _... |
2121 2122 |
found_parent = n; break; |
f368c07d7 [PATCH] audit: pa... |
2123 |
} |
5712e88f2 [PATCH] match aud... |
2124 |
} |
73241ccca [PATCH] Collect m... |
2125 |
|
4fa6b5ecb audit: overhaul _... |
2126 |
/* is there a matching child entry? */ |
5195d8e21 audit: dynamicall... |
2127 |
list_for_each_entry(n, &context->names_list, list) { |
4fa6b5ecb audit: overhaul _... |
2128 |
/* can only match entries that have a name */ |
57c59f583 audit: fix filena... |
2129 2130 |
if (!n->name || (n->type != type && n->type != AUDIT_TYPE_UNKNOWN)) |
5712e88f2 [PATCH] match aud... |
2131 |
continue; |
795d673af audit_compare_dna... |
2132 |
if (!strcmp(dname->name, n->name->name) || |
91a27b2a7 vfs: define struc... |
2133 |
!audit_compare_dname_path(dname, n->name->name, |
4fa6b5ecb audit: overhaul _... |
2134 2135 |
found_parent ? found_parent->name_len : |
e3d6b07b8 audit: optimize a... |
2136 |
AUDIT_NAME_FULL)) { |
57c59f583 audit: fix filena... |
2137 2138 |
if (n->type == AUDIT_TYPE_UNKNOWN) n->type = type; |
4fa6b5ecb audit: overhaul _... |
2139 2140 |
found_child = n; break; |
5712e88f2 [PATCH] match aud... |
2141 |
} |
ac9910ce0 [PATCH] name_coun... |
2142 |
} |
5712e88f2 [PATCH] match aud... |
2143 |
|
5712e88f2 [PATCH] match aud... |
2144 |
if (!found_parent) { |
4fa6b5ecb audit: overhaul _... |
2145 2146 |
/* create a new, "anonymous" parent record */ n = audit_alloc_name(context, AUDIT_TYPE_PARENT); |
5195d8e21 audit: dynamicall... |
2147 |
if (!n) |
ac9910ce0 [PATCH] name_coun... |
2148 |
return; |
57d465771 audit: ignore fca... |
2149 |
audit_copy_inode(n, NULL, parent, 0); |
73d3ec5ab [PATCH] fix misse... |
2150 |
} |
5712e88f2 [PATCH] match aud... |
2151 2152 |
if (!found_child) { |
4fa6b5ecb audit: overhaul _... |
2153 2154 |
found_child = audit_alloc_name(context, type); if (!found_child) |
5712e88f2 [PATCH] match aud... |
2155 |
return; |
5712e88f2 [PATCH] match aud... |
2156 2157 2158 2159 2160 |
/* Re-use the name belonging to the slot for a matching parent * directory. All names for this context are relinquished in * audit_free_names() */ if (found_parent) { |
4fa6b5ecb audit: overhaul _... |
2161 2162 |
found_child->name = found_parent->name; found_child->name_len = AUDIT_NAME_FULL; |
55422d0bd audit: replace ge... |
2163 |
found_child->name->refcnt++; |
5712e88f2 [PATCH] match aud... |
2164 |
} |
5712e88f2 [PATCH] match aud... |
2165 |
} |
57c59f583 audit: fix filena... |
2166 |
|
4fa6b5ecb audit: overhaul _... |
2167 |
if (inode) |
57d465771 audit: ignore fca... |
2168 |
audit_copy_inode(found_child, dentry, inode, 0); |
4fa6b5ecb audit: overhaul _... |
2169 |
else |
84cb777e6 audit: use macros... |
2170 |
found_child->ino = AUDIT_INO_UNSET; |
3e2efce06 [PATCH] fix fault... |
2171 |
} |
50e437d52 SUNRPC: Convert r... |
2172 |
EXPORT_SYMBOL_GPL(__audit_inode_child); |
3e2efce06 [PATCH] fix fault... |
2173 2174 |
/** |
b0dd25a82 [PATCH] AUDIT: ke... |
2175 2176 |
* auditsc_get_stamp - get local copies of audit_context values * @ctx: audit_context for the task |
2115bb250 audit: Use timesp... |
2177 |
* @t: timespec64 to store time recorded in the audit_context |
b0dd25a82 [PATCH] AUDIT: ke... |
2178 2179 2180 2181 |
* @serial: serial value that is recorded in the audit_context * * Also sets the context as auditable. */ |
48887e63d [PATCH] fix broke... |
2182 |
int auditsc_get_stamp(struct audit_context *ctx, |
2115bb250 audit: Use timesp... |
2183 |
struct timespec64 *t, unsigned int *serial) |
1da177e4c Linux-2.6.12-rc2 |
2184 |
{ |
48887e63d [PATCH] fix broke... |
2185 2186 |
if (!ctx->in_syscall) return 0; |
ce625a801 AUDIT: Reduce con... |
2187 2188 |
if (!ctx->serial) ctx->serial = audit_serial(); |
bfb4496e7 AUDIT: Assign ser... |
2189 2190 2191 |
t->tv_sec = ctx->ctime.tv_sec; t->tv_nsec = ctx->ctime.tv_nsec; *serial = ctx->serial; |
0590b9335 fixing audit rule... |
2192 2193 |
if (!ctx->prio) { ctx->prio = 1; |
619ed58ac audit: Rename enu... |
2194 |
ctx->current_state = AUDIT_STATE_RECORD; |
0590b9335 fixing audit rule... |
2195 |
} |
48887e63d [PATCH] fix broke... |
2196 |
return 1; |
1da177e4c Linux-2.6.12-rc2 |
2197 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
2198 |
/** |
20ca73bc7 [PATCH] Audit of ... |
2199 2200 2201 |
* __audit_mq_open - record audit data for a POSIX MQ open * @oflag: open flag * @mode: mode bits |
6b9625599 auditsc: fix kern... |
2202 |
* @attr: queue attributes |
20ca73bc7 [PATCH] Audit of ... |
2203 |
* |
20ca73bc7 [PATCH] Audit of ... |
2204 |
*/ |
df0a42837 switch mq_open() ... |
2205 |
void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr) |
20ca73bc7 [PATCH] Audit of ... |
2206 |
{ |
cdfb6b341 audit: use inline... |
2207 |
struct audit_context *context = audit_context(); |
20ca73bc7 [PATCH] Audit of ... |
2208 |
|
564f6993f sanitize audit_mq... |
2209 2210 2211 2212 |
if (attr) memcpy(&context->mq_open.attr, attr, sizeof(struct mq_attr)); else memset(&context->mq_open.attr, 0, sizeof(struct mq_attr)); |
20ca73bc7 [PATCH] Audit of ... |
2213 |
|
564f6993f sanitize audit_mq... |
2214 2215 |
context->mq_open.oflag = oflag; context->mq_open.mode = mode; |
20ca73bc7 [PATCH] Audit of ... |
2216 |
|
564f6993f sanitize audit_mq... |
2217 |
context->type = AUDIT_MQ_OPEN; |
20ca73bc7 [PATCH] Audit of ... |
2218 2219 2220 |
} /** |
c32c8af43 sanitize AUDIT_MQ... |
2221 |
* __audit_mq_sendrecv - record audit data for a POSIX MQ timed send/receive |
20ca73bc7 [PATCH] Audit of ... |
2222 2223 2224 |
* @mqdes: MQ descriptor * @msg_len: Message length * @msg_prio: Message priority |
c32c8af43 sanitize AUDIT_MQ... |
2225 |
* @abs_timeout: Message timeout in absolute time |
20ca73bc7 [PATCH] Audit of ... |
2226 |
* |
20ca73bc7 [PATCH] Audit of ... |
2227 |
*/ |
c32c8af43 sanitize AUDIT_MQ... |
2228 |
void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, |
b90477263 ipc: mqueue: Repl... |
2229 |
const struct timespec64 *abs_timeout) |
20ca73bc7 [PATCH] Audit of ... |
2230 |
{ |
cdfb6b341 audit: use inline... |
2231 |
struct audit_context *context = audit_context(); |
b90477263 ipc: mqueue: Repl... |
2232 |
struct timespec64 *p = &context->mq_sendrecv.abs_timeout; |
20ca73bc7 [PATCH] Audit of ... |
2233 |
|
c32c8af43 sanitize AUDIT_MQ... |
2234 |
if (abs_timeout) |
b90477263 ipc: mqueue: Repl... |
2235 |
memcpy(p, abs_timeout, sizeof(*p)); |
c32c8af43 sanitize AUDIT_MQ... |
2236 |
else |
b90477263 ipc: mqueue: Repl... |
2237 |
memset(p, 0, sizeof(*p)); |
20ca73bc7 [PATCH] Audit of ... |
2238 |
|
c32c8af43 sanitize AUDIT_MQ... |
2239 2240 2241 |
context->mq_sendrecv.mqdes = mqdes; context->mq_sendrecv.msg_len = msg_len; context->mq_sendrecv.msg_prio = msg_prio; |
20ca73bc7 [PATCH] Audit of ... |
2242 |
|
c32c8af43 sanitize AUDIT_MQ... |
2243 |
context->type = AUDIT_MQ_SENDRECV; |
20ca73bc7 [PATCH] Audit of ... |
2244 2245 2246 2247 2248 |
} /** * __audit_mq_notify - record audit data for a POSIX MQ notify * @mqdes: MQ descriptor |
6b9625599 auditsc: fix kern... |
2249 |
* @notification: Notification event |
20ca73bc7 [PATCH] Audit of ... |
2250 |
* |
20ca73bc7 [PATCH] Audit of ... |
2251 |
*/ |
20114f71b sanitize audit_mq... |
2252 |
void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification) |
20ca73bc7 [PATCH] Audit of ... |
2253 |
{ |
cdfb6b341 audit: use inline... |
2254 |
struct audit_context *context = audit_context(); |
20ca73bc7 [PATCH] Audit of ... |
2255 |
|
20114f71b sanitize audit_mq... |
2256 2257 2258 2259 |
if (notification) context->mq_notify.sigev_signo = notification->sigev_signo; else context->mq_notify.sigev_signo = 0; |
20ca73bc7 [PATCH] Audit of ... |
2260 |
|
20114f71b sanitize audit_mq... |
2261 2262 |
context->mq_notify.mqdes = mqdes; context->type = AUDIT_MQ_NOTIFY; |
20ca73bc7 [PATCH] Audit of ... |
2263 2264 2265 2266 2267 2268 2269 |
} /** * __audit_mq_getsetattr - record audit data for a POSIX MQ get/set attribute * @mqdes: MQ descriptor * @mqstat: MQ flags * |
20ca73bc7 [PATCH] Audit of ... |
2270 |
*/ |
7392906ea sanitize audit_mq... |
2271 |
void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat) |
20ca73bc7 [PATCH] Audit of ... |
2272 |
{ |
cdfb6b341 audit: use inline... |
2273 |
struct audit_context *context = audit_context(); |
254c8b96c audit: add blank ... |
2274 |
|
7392906ea sanitize audit_mq... |
2275 2276 2277 |
context->mq_getsetattr.mqdes = mqdes; context->mq_getsetattr.mqstat = *mqstat; context->type = AUDIT_MQ_GETSETATTR; |
20ca73bc7 [PATCH] Audit of ... |
2278 2279 2280 |
} /** |
196a50855 audit: update the... |
2281 |
* __audit_ipc_obj - record audit data for ipc object |
073115d6b [PATCH] Rework of... |
2282 2283 |
* @ipcp: ipc permissions * |
073115d6b [PATCH] Rework of... |
2284 |
*/ |
a33e67510 sanitize audit_ip... |
2285 |
void __audit_ipc_obj(struct kern_ipc_perm *ipcp) |
073115d6b [PATCH] Rework of... |
2286 |
{ |
cdfb6b341 audit: use inline... |
2287 |
struct audit_context *context = audit_context(); |
254c8b96c audit: add blank ... |
2288 |
|
a33e67510 sanitize audit_ip... |
2289 2290 2291 |
context->ipc.uid = ipcp->uid; context->ipc.gid = ipcp->gid; context->ipc.mode = ipcp->mode; |
e816f370c sanitize audit_ip... |
2292 |
context->ipc.has_perm = 0; |
a33e67510 sanitize audit_ip... |
2293 2294 |
security_ipc_getsecid(ipcp, &context->ipc.osid); context->type = AUDIT_IPC; |
073115d6b [PATCH] Rework of... |
2295 2296 2297 |
} /** |
196a50855 audit: update the... |
2298 |
* __audit_ipc_set_perm - record audit data for new ipc permissions |
b0dd25a82 [PATCH] AUDIT: ke... |
2299 2300 2301 2302 2303 |
* @qbytes: msgq bytes * @uid: msgq user id * @gid: msgq group id * @mode: msgq mode (permissions) * |
e816f370c sanitize audit_ip... |
2304 |
* Called only after audit_ipc_obj(). |
b0dd25a82 [PATCH] AUDIT: ke... |
2305 |
*/ |
2570ebbd1 switch kern_ipc_p... |
2306 |
void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode) |
1da177e4c Linux-2.6.12-rc2 |
2307 |
{ |
cdfb6b341 audit: use inline... |
2308 |
struct audit_context *context = audit_context(); |
1da177e4c Linux-2.6.12-rc2 |
2309 |
|
e816f370c sanitize audit_ip... |
2310 2311 2312 2313 2314 |
context->ipc.qbytes = qbytes; context->ipc.perm_uid = uid; context->ipc.perm_gid = gid; context->ipc.perm_mode = mode; context->ipc.has_perm = 1; |
1da177e4c Linux-2.6.12-rc2 |
2315 |
} |
c2f0c7c35 The attached patc... |
2316 |
|
d9cfea91e audit: move audit... |
2317 |
void __audit_bprm(struct linux_binprm *bprm) |
473ae30bc [PATCH] execve ar... |
2318 |
{ |
cdfb6b341 audit: use inline... |
2319 |
struct audit_context *context = audit_context(); |
473ae30bc [PATCH] execve ar... |
2320 |
|
d9cfea91e audit: move audit... |
2321 2322 |
context->type = AUDIT_EXECVE; context->execve.argc = bprm->argc; |
473ae30bc [PATCH] execve ar... |
2323 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
2324 |
/** |
196a50855 audit: update the... |
2325 |
* __audit_socketcall - record audit data for sys_socketcall |
2950fa9d3 kernel: audit: be... |
2326 |
* @nargs: number of args, which should not be more than AUDITSC_ARGS. |
b0dd25a82 [PATCH] AUDIT: ke... |
2327 2328 |
* @args: args array * |
b0dd25a82 [PATCH] AUDIT: ke... |
2329 |
*/ |
2950fa9d3 kernel: audit: be... |
2330 |
int __audit_socketcall(int nargs, unsigned long *args) |
3ec3b2fba AUDIT: Capture sy... |
2331 |
{ |
cdfb6b341 audit: use inline... |
2332 |
struct audit_context *context = audit_context(); |
3ec3b2fba AUDIT: Capture sy... |
2333 |
|
2950fa9d3 kernel: audit: be... |
2334 2335 |
if (nargs <= 0 || nargs > AUDITSC_ARGS || !args) return -EINVAL; |
f3298dc4f sanitize audit_so... |
2336 2337 2338 |
context->type = AUDIT_SOCKETCALL; context->socketcall.nargs = nargs; memcpy(context->socketcall.args, args, nargs * sizeof(unsigned long)); |
2950fa9d3 kernel: audit: be... |
2339 |
return 0; |
3ec3b2fba AUDIT: Capture sy... |
2340 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
2341 |
/** |
db3495099 [PATCH] AUDIT_FD_... |
2342 2343 2344 2345 |
* __audit_fd_pair - record audit data for pipe and socketpair * @fd1: the first file descriptor * @fd2: the second file descriptor * |
db3495099 [PATCH] AUDIT_FD_... |
2346 |
*/ |
157cf649a sanitize audit_fd... |
2347 |
void __audit_fd_pair(int fd1, int fd2) |
db3495099 [PATCH] AUDIT_FD_... |
2348 |
{ |
cdfb6b341 audit: use inline... |
2349 |
struct audit_context *context = audit_context(); |
254c8b96c audit: add blank ... |
2350 |
|
157cf649a sanitize audit_fd... |
2351 2352 |
context->fds[0] = fd1; context->fds[1] = fd2; |
db3495099 [PATCH] AUDIT_FD_... |
2353 2354 2355 |
} /** |
196a50855 audit: update the... |
2356 |
* __audit_sockaddr - record audit data for sys_bind, sys_connect, sys_sendto |
b0dd25a82 [PATCH] AUDIT: ke... |
2357 2358 2359 2360 2361 |
* @len: data length in user space * @a: data address in kernel space * * Returns 0 for success or NULL context or < 0 on error. */ |
07c494178 audit: inline che... |
2362 |
int __audit_sockaddr(int len, void *a) |
3ec3b2fba AUDIT: Capture sy... |
2363 |
{ |
cdfb6b341 audit: use inline... |
2364 |
struct audit_context *context = audit_context(); |
3ec3b2fba AUDIT: Capture sy... |
2365 |
|
4f6b434fe don't reallocate ... |
2366 2367 |
if (!context->sockaddr) { void *p = kmalloc(sizeof(struct sockaddr_storage), GFP_KERNEL); |
254c8b96c audit: add blank ... |
2368 |
|
4f6b434fe don't reallocate ... |
2369 2370 2371 2372 |
if (!p) return -ENOMEM; context->sockaddr = p; } |
3ec3b2fba AUDIT: Capture sy... |
2373 |
|
4f6b434fe don't reallocate ... |
2374 2375 |
context->sockaddr_len = len; memcpy(context->sockaddr, a, len); |
3ec3b2fba AUDIT: Capture sy... |
2376 2377 |
return 0; } |
a5cb013da [PATCH] auditing ... |
2378 2379 |
void __audit_ptrace(struct task_struct *t) { |
cdfb6b341 audit: use inline... |
2380 |
struct audit_context *context = audit_context(); |
a5cb013da [PATCH] auditing ... |
2381 |
|
fa2bea2f5 audit: consistent... |
2382 |
context->target_pid = task_tgid_nr(t); |
c2a7780ef [AUDIT] collect u... |
2383 |
context->target_auid = audit_get_loginuid(t); |
c69e8d9c0 CRED: Use RCU to ... |
2384 |
context->target_uid = task_uid(t); |
4746ec5b0 [AUDIT] add sessi... |
2385 |
context->target_sessionid = audit_get_sessionid(t); |
4ebd7651b lsm: separate sec... |
2386 |
security_task_getsecid_obj(t, &context->target_sid); |
c2a7780ef [AUDIT] collect u... |
2387 |
memcpy(context->target_comm, t->comm, TASK_COMM_LEN); |
a5cb013da [PATCH] auditing ... |
2388 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
2389 |
/** |
b48345aaf audit: deliver si... |
2390 |
* audit_signal_info_syscall - record signal info for syscalls |
b0dd25a82 [PATCH] AUDIT: ke... |
2391 2392 2393 2394 2395 |
* @t: task being signaled * * If the audit subsystem is being terminated, record the task (pid) * and uid that is doing that. */ |
b48345aaf audit: deliver si... |
2396 |
int audit_signal_info_syscall(struct task_struct *t) |
c2f0c7c35 The attached patc... |
2397 |
{ |
e54dc2431 [PATCH] audit sig... |
2398 |
struct audit_aux_data_pids *axp; |
cdfb6b341 audit: use inline... |
2399 |
struct audit_context *ctx = audit_context(); |
b48345aaf audit: deliver si... |
2400 |
kuid_t t_uid = task_uid(t); |
e54dc2431 [PATCH] audit sig... |
2401 |
|
ab6434a13 audit: move audit... |
2402 2403 |
if (!audit_signals || audit_dummy_context()) return 0; |
e54dc2431 [PATCH] audit sig... |
2404 2405 2406 |
/* optimize the common case by putting first signal recipient directly * in audit_context */ if (!ctx->target_pid) { |
f1dc4867f audit: anchor all... |
2407 |
ctx->target_pid = task_tgid_nr(t); |
c2a7780ef [AUDIT] collect u... |
2408 |
ctx->target_auid = audit_get_loginuid(t); |
c69e8d9c0 CRED: Use RCU to ... |
2409 |
ctx->target_uid = t_uid; |
4746ec5b0 [AUDIT] add sessi... |
2410 |
ctx->target_sessionid = audit_get_sessionid(t); |
4ebd7651b lsm: separate sec... |
2411 |
security_task_getsecid_obj(t, &ctx->target_sid); |
c2a7780ef [AUDIT] collect u... |
2412 |
memcpy(ctx->target_comm, t->comm, TASK_COMM_LEN); |
e54dc2431 [PATCH] audit sig... |
2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 |
return 0; } axp = (void *)ctx->aux_pids; if (!axp || axp->pid_count == AUDIT_AUX_PIDS) { axp = kzalloc(sizeof(*axp), GFP_ATOMIC); if (!axp) return -ENOMEM; axp->d.type = AUDIT_OBJ_PID; axp->d.next = ctx->aux_pids; ctx->aux_pids = (void *)axp; } |
88ae704c2 kernel/auditsc.c:... |
2426 |
BUG_ON(axp->pid_count >= AUDIT_AUX_PIDS); |
e54dc2431 [PATCH] audit sig... |
2427 |
|
f1dc4867f audit: anchor all... |
2428 |
axp->target_pid[axp->pid_count] = task_tgid_nr(t); |
c2a7780ef [AUDIT] collect u... |
2429 |
axp->target_auid[axp->pid_count] = audit_get_loginuid(t); |
c69e8d9c0 CRED: Use RCU to ... |
2430 |
axp->target_uid[axp->pid_count] = t_uid; |
4746ec5b0 [AUDIT] add sessi... |
2431 |
axp->target_sessionid[axp->pid_count] = audit_get_sessionid(t); |
4ebd7651b lsm: separate sec... |
2432 |
security_task_getsecid_obj(t, &axp->target_sid[axp->pid_count]); |
c2a7780ef [AUDIT] collect u... |
2433 |
memcpy(axp->target_comm[axp->pid_count], t->comm, TASK_COMM_LEN); |
e54dc2431 [PATCH] audit sig... |
2434 2435 2436 |
axp->pid_count++; return 0; |
c2f0c7c35 The attached patc... |
2437 |
} |
0a4ff8c25 [PATCH] Abnormal ... |
2438 2439 |
/** |
3fc689e96 Any time fcaps or... |
2440 |
* __audit_log_bprm_fcaps - store information about a loading bprm and relevant fcaps |
d84f4f992 CRED: Inaugurate ... |
2441 2442 2443 |
* @bprm: pointer to the bprm being processed * @new: the proposed new credentials * @old: the old credentials |
3fc689e96 Any time fcaps or... |
2444 2445 2446 2447 |
* * Simply check if the proc already has the caps given by the file and if not * store the priv escalation info for later auditing at the end of the syscall * |
3fc689e96 Any time fcaps or... |
2448 2449 |
* -Eric */ |
d84f4f992 CRED: Inaugurate ... |
2450 2451 |
int __audit_log_bprm_fcaps(struct linux_binprm *bprm, const struct cred *new, const struct cred *old) |
3fc689e96 Any time fcaps or... |
2452 2453 |
{ struct audit_aux_data_bprm_fcaps *ax; |
cdfb6b341 audit: use inline... |
2454 |
struct audit_context *context = audit_context(); |
3fc689e96 Any time fcaps or... |
2455 |
struct cpu_vfs_cap_data vcaps; |
3fc689e96 Any time fcaps or... |
2456 2457 2458 |
ax = kmalloc(sizeof(*ax), GFP_KERNEL); if (!ax) |
d84f4f992 CRED: Inaugurate ... |
2459 |
return -ENOMEM; |
3fc689e96 Any time fcaps or... |
2460 2461 2462 2463 |
ax->d.type = AUDIT_BPRM_FCAPS; ax->d.next = context->aux; context->aux = (void *)ax; |
71bc356f9 commoncap: handle... |
2464 2465 |
get_vfs_caps_from_disk(&init_user_ns, bprm->file->f_path.dentry, &vcaps); |
3fc689e96 Any time fcaps or... |
2466 2467 2468 2469 |
ax->fcap.permitted = vcaps.permitted; ax->fcap.inheritable = vcaps.inheritable; ax->fcap.fE = !!(vcaps.magic_etc & VFS_CAP_FLAGS_EFFECTIVE); |
2fec30e24 audit: add suppor... |
2470 |
ax->fcap.rootid = vcaps.rootid; |
3fc689e96 Any time fcaps or... |
2471 |
ax->fcap_ver = (vcaps.magic_etc & VFS_CAP_REVISION_MASK) >> VFS_CAP_REVISION_SHIFT; |
d84f4f992 CRED: Inaugurate ... |
2472 2473 2474 |
ax->old_pcap.permitted = old->cap_permitted; ax->old_pcap.inheritable = old->cap_inheritable; ax->old_pcap.effective = old->cap_effective; |
7786f6b6d audit: add ambien... |
2475 |
ax->old_pcap.ambient = old->cap_ambient; |
3fc689e96 Any time fcaps or... |
2476 |
|
d84f4f992 CRED: Inaugurate ... |
2477 2478 2479 |
ax->new_pcap.permitted = new->cap_permitted; ax->new_pcap.inheritable = new->cap_inheritable; ax->new_pcap.effective = new->cap_effective; |
7786f6b6d audit: add ambien... |
2480 |
ax->new_pcap.ambient = new->cap_ambient; |
d84f4f992 CRED: Inaugurate ... |
2481 |
return 0; |
3fc689e96 Any time fcaps or... |
2482 2483 2484 |
} /** |
e68b75a02 When the capset s... |
2485 |
* __audit_log_capset - store information about the arguments to the capset syscall |
d84f4f992 CRED: Inaugurate ... |
2486 2487 |
* @new: the new credentials * @old: the old (current) credentials |
e68b75a02 When the capset s... |
2488 |
* |
da3dae54e Documentation: Do... |
2489 |
* Record the arguments userspace sent to sys_capset for later printing by the |
e68b75a02 When the capset s... |
2490 2491 |
* audit system if applicable */ |
ca24a23eb audit: Simplify a... |
2492 |
void __audit_log_capset(const struct cred *new, const struct cred *old) |
e68b75a02 When the capset s... |
2493 |
{ |
cdfb6b341 audit: use inline... |
2494 |
struct audit_context *context = audit_context(); |
254c8b96c audit: add blank ... |
2495 |
|
fa2bea2f5 audit: consistent... |
2496 |
context->capset.pid = task_tgid_nr(current); |
57f71a0af sanitize audit_lo... |
2497 2498 2499 |
context->capset.cap.effective = new->cap_effective; context->capset.cap.inheritable = new->cap_effective; context->capset.cap.permitted = new->cap_permitted; |
7786f6b6d audit: add ambien... |
2500 |
context->capset.cap.ambient = new->cap_ambient; |
57f71a0af sanitize audit_lo... |
2501 |
context->type = AUDIT_CAPSET; |
e68b75a02 When the capset s... |
2502 |
} |
120a795da audit mmap |
2503 2504 |
void __audit_mmap_fd(int fd, int flags) { |
cdfb6b341 audit: use inline... |
2505 |
struct audit_context *context = audit_context(); |
254c8b96c audit: add blank ... |
2506 |
|
120a795da audit mmap |
2507 2508 2509 2510 |
context->mmap.fd = fd; context->mmap.flags = flags; context->type = AUDIT_MMAP; } |
ca86cad73 audit: log module... |
2511 2512 |
void __audit_log_kern_module(char *name) { |
cdfb6b341 audit: use inline... |
2513 |
struct audit_context *context = audit_context(); |
ca86cad73 audit: log module... |
2514 |
|
b305f7ed0 audit: fix potent... |
2515 2516 2517 |
context->module.name = kstrdup(name, GFP_KERNEL); if (!context->module.name) audit_log_lost("out of memory in __audit_log_kern_module"); |
ca86cad73 audit: log module... |
2518 2519 |
context->type = AUDIT_KERN_MODULE; } |
de8cd83e9 audit: Record fan... |
2520 2521 |
void __audit_fanotify(unsigned int response) { |
cdfb6b341 audit: use inline... |
2522 |
audit_log(audit_context(), GFP_KERNEL, |
de8cd83e9 audit: Record fan... |
2523 2524 |
AUDIT_FANOTIFY, "resp=%u", response); } |
2d87a0674 timekeeping: Audi... |
2525 2526 |
void __audit_tk_injoffset(struct timespec64 offset) { |
3a10df731 audit: log AUDIT_... |
2527 |
struct audit_context *context = audit_context(); |
7e8eda734 ntp: Audit NTP pa... |
2528 |
|
3a10df731 audit: log AUDIT_... |
2529 2530 2531 2532 |
/* only set type if not already set by NTP */ if (!context->type) context->type = AUDIT_TIME_INJOFFSET; memcpy(&context->time.tk_injoffset, &offset, sizeof(offset)); |
7e8eda734 ntp: Audit NTP pa... |
2533 2534 2535 2536 |
} void __audit_ntp_log(const struct audit_ntp_data *ad) { |
3a10df731 audit: log AUDIT_... |
2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 |
struct audit_context *context = audit_context(); int type; for (type = 0; type < AUDIT_NTP_NVALS; type++) if (ad->vals[type].newval != ad->vals[type].oldval) { /* unconditionally set type, overwriting TK */ context->type = AUDIT_TIME_ADJNTPVAL; memcpy(&context->time.ntp_data, ad, sizeof(*ad)); break; } |
7e8eda734 ntp: Audit NTP pa... |
2547 |
} |
c4dad0aab audit: tidy and e... |
2548 |
void __audit_log_nfcfg(const char *name, u8 af, unsigned int nentries, |
142240398 audit: add gfp pa... |
2549 |
enum audit_nfcfgop op, gfp_t gfp) |
c4dad0aab audit: tidy and e... |
2550 2551 |
{ struct audit_buffer *ab; |
9d44a121c audit: add subj c... |
2552 |
char comm[sizeof(current->comm)]; |
c4dad0aab audit: tidy and e... |
2553 |
|
142240398 audit: add gfp pa... |
2554 |
ab = audit_log_start(audit_context(), gfp, AUDIT_NETFILTER_CFG); |
c4dad0aab audit: tidy and e... |
2555 2556 2557 2558 |
if (!ab) return; audit_log_format(ab, "table=%s family=%u entries=%u op=%s", name, af, nentries, audit_nfcfgs[op].s); |
9d44a121c audit: add subj c... |
2559 2560 2561 2562 2563 |
audit_log_format(ab, " pid=%u", task_pid_nr(current)); audit_log_task_context(ab); /* subj= */ audit_log_format(ab, " comm="); audit_log_untrustedstring(ab, get_task_comm(comm, current)); |
c4dad0aab audit: tidy and e... |
2564 2565 2566 |
audit_log_end(ab); } EXPORT_SYMBOL_GPL(__audit_log_nfcfg); |
7b9205bd7 audit: create exp... |
2567 |
static void audit_log_task(struct audit_buffer *ab) |
85e7bac33 seccomp: audit ab... |
2568 |
{ |
cca080d9b userns: Convert a... |
2569 2570 |
kuid_t auid, uid; kgid_t gid; |
85e7bac33 seccomp: audit ab... |
2571 |
unsigned int sessionid; |
9eab339b1 audit: get comm u... |
2572 |
char comm[sizeof(current->comm)]; |
85e7bac33 seccomp: audit ab... |
2573 2574 2575 2576 2577 2578 |
auid = audit_get_loginuid(current); sessionid = audit_get_sessionid(current); current_uid_gid(&uid, &gid); audit_log_format(ab, "auid=%u uid=%u gid=%u ses=%u", |
cca080d9b userns: Convert a... |
2579 2580 2581 2582 |
from_kuid(&init_user_ns, auid), from_kuid(&init_user_ns, uid), from_kgid(&init_user_ns, gid), sessionid); |
85e7bac33 seccomp: audit ab... |
2583 |
audit_log_task_context(ab); |
fa2bea2f5 audit: consistent... |
2584 |
audit_log_format(ab, " pid=%d comm=", task_tgid_nr(current)); |
9eab339b1 audit: get comm u... |
2585 |
audit_log_untrustedstring(ab, get_task_comm(comm, current)); |
4766b199e audit: consolidat... |
2586 |
audit_log_d_path_exe(ab, current->mm); |
7b9205bd7 audit: create exp... |
2587 |
} |
e68b75a02 When the capset s... |
2588 |
/** |
0a4ff8c25 [PATCH] Abnormal ... |
2589 |
* audit_core_dumps - record information about processes that end abnormally |
6d9525b52 kerneldoc fix in ... |
2590 |
* @signr: signal value |
0a4ff8c25 [PATCH] Abnormal ... |
2591 2592 2593 2594 2595 2596 2597 |
* * If a process ends with a core dump, something fishy is going on and we * should record the event for investigation. */ void audit_core_dumps(long signr) { struct audit_buffer *ab; |
0a4ff8c25 [PATCH] Abnormal ... |
2598 2599 2600 2601 2602 2603 |
if (!audit_enabled) return; if (signr == SIGQUIT) /* don't care for those */ return; |
d87de4a87 audit: tie ANOM_A... |
2604 |
ab = audit_log_start(audit_context(), GFP_KERNEL, AUDIT_ANOM_ABEND); |
0644ec0cc audit: catch poss... |
2605 2606 |
if (unlikely(!ab)) return; |
61c0ee879 audit: drop audit... |
2607 |
audit_log_task(ab); |
89670affa audit: Make AUDIT... |
2608 |
audit_log_format(ab, " sig=%ld res=1", signr); |
85e7bac33 seccomp: audit ab... |
2609 2610 |
audit_log_end(ab); } |
0a4ff8c25 [PATCH] Abnormal ... |
2611 |
|
326bee028 seccomp: Don't sp... |
2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 |
/** * audit_seccomp - record information about a seccomp action * @syscall: syscall number * @signr: signal value * @code: the seccomp action * * Record the information associated with a seccomp action. Event filtering for * seccomp actions that are not to be logged is done in seccomp_log(). * Therefore, this function forces auditing independent of the audit_enabled * and dummy context state because seccomp actions should be logged even when * audit is not in use. */ void audit_seccomp(unsigned long syscall, long signr, int code) |
85e7bac33 seccomp: audit ab... |
2625 2626 |
{ struct audit_buffer *ab; |
9b8753fff audit: tie SECCOM... |
2627 |
ab = audit_log_start(audit_context(), GFP_KERNEL, AUDIT_SECCOMP); |
7b9205bd7 audit: create exp... |
2628 2629 2630 |
if (unlikely(!ab)) return; audit_log_task(ab); |
84db564aa audit: add arch f... |
2631 |
audit_log_format(ab, " sig=%ld arch=%x syscall=%ld compat=%d ip=0x%lx code=0x%x", |
16add4116 syscall_get_arch:... |
2632 |
signr, syscall_get_arch(current), syscall, |
efbc0fbf3 auditsc: for secc... |
2633 |
in_compat_syscall(), KSTK_EIP(current), code); |
0a4ff8c25 [PATCH] Abnormal ... |
2634 2635 |
audit_log_end(ab); } |
916d75761 Fix rule eviction... |
2636 |
|
ea6eca778 seccomp: Audit at... |
2637 2638 2639 2640 2641 2642 2643 |
void audit_seccomp_actions_logged(const char *names, const char *old_names, int res) { struct audit_buffer *ab; if (!audit_enabled) return; |
8982a1fbe audit: use new au... |
2644 |
ab = audit_log_start(audit_context(), GFP_KERNEL, |
ea6eca778 seccomp: Audit at... |
2645 2646 2647 |
AUDIT_CONFIG_CHANGE); if (unlikely(!ab)) return; |
d0a3f18a7 audit: minimize o... |
2648 2649 2650 |
audit_log_format(ab, "op=seccomp-logging actions=%s old-actions=%s res=%d", names, old_names, res); |
ea6eca778 seccomp: Audit at... |
2651 2652 |
audit_log_end(ab); } |
916d75761 Fix rule eviction... |
2653 2654 |
struct list_head *audit_killed_trees(void) { |
cdfb6b341 audit: use inline... |
2655 |
struct audit_context *ctx = audit_context(); |
254c8b96c audit: add blank ... |
2656 |
|
916d75761 Fix rule eviction... |
2657 2658 2659 2660 |
if (likely(!ctx || !ctx->in_syscall)) return NULL; return &ctx->killed_trees; } |