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kernel/auditsc.c
65.9 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/tty.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 <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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|
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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) */ #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; }; #define AUDIT_AUX_IPCPERM 0 |
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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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static inline int open_arg(int flags, int mask) { int n = ACC_MODE(flags); if (flags & (O_TRUNC | O_CREAT)) n |= AUDIT_PERM_WRITE; return n & mask; } 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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|
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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) { if ((n->ino != -1) && ((n->mode & S_IFMT) == mode)) |
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return 1; } |
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|
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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. */ #ifdef CONFIG_AUDIT_TREE |
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static void audit_set_auditable(struct audit_context *ctx) { if (!ctx->prio) { ctx->prio = 1; ctx->current_state = AUDIT_RECORD_CONTEXT; } } |
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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; 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; 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; } #endif static void unroll_tree_refs(struct audit_context *ctx, struct audit_tree_refs *p, int count) { #ifdef CONFIG_AUDIT_TREE struct audit_tree_refs *q; int n; 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; #endif } static void free_tree_refs(struct audit_context *ctx) { struct audit_tree_refs *p, *q; 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) { #ifdef CONFIG_AUDIT_TREE struct audit_tree_refs *p; int n; 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; } #endif 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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|
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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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|
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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; if (name) { rc = audit_gid_comparator(gid, f->op, name->gid); if (rc) return rc; } 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(tsk->loginuid, 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, tsk->loginuid); |
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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(tsk->loginuid, f->op, cred->euid); |
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case AUDIT_COMPARE_AUID_TO_SUID: |
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return audit_uid_comparator(tsk->loginuid, f->op, cred->suid); |
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case AUDIT_COMPARE_AUID_TO_FSUID: |
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return audit_uid_comparator(tsk->loginuid, 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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return audit_gid_comparator(cred->gid, f->op, cred->fsgid); |
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/* egid comparisons */ case AUDIT_COMPARE_EGID_TO_SGID: |
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return audit_gid_comparator(cred->egid, f->op, cred->sgid); |
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case AUDIT_COMPARE_EGID_TO_FSGID: |
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return audit_gid_comparator(cred->egid, f->op, cred->fsgid); |
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/* sgid comparison */ case AUDIT_COMPARE_SGID_TO_FSGID: |
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return audit_gid_comparator(cred->sgid, f->op, cred->fsgid); |
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default: WARN(1, "Missing AUDIT_COMPARE define. Report as a bug "); return 0; } return 0; } |
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/* Determine if any context name data matches a rule's watch data */ |
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/* Compare a task_struct with an audit_rule. Return 1 on match, 0 |
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* 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. */ |
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static int audit_filter_rules(struct task_struct *tsk, |
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struct audit_krule *rule, |
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struct audit_context *ctx, |
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struct audit_names *name, |
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enum audit_state *state, bool task_creation) |
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{ |
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const struct cred *cred; |
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int i, need_sid = 1; |
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u32 sid; |
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cred = rcu_dereference_check(tsk->cred, tsk == current || task_creation); |
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for (i = 0; i < rule->field_count; i++) { |
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struct audit_field *f = &rule->fields[i]; |
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struct audit_names *n; |
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int result = 0; |
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pid_t pid; |
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|
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switch (f->type) { |
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case AUDIT_PID: |
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pid = task_pid_nr(tsk); result = audit_comparator(pid, f->op, f->val); |
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break; |
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case AUDIT_PPID: |
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if (ctx) { if (!ctx->ppid) |
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ctx->ppid = task_ppid_nr(tsk); |
3c66251e5 [PATCH] add filte... |
451 |
result = audit_comparator(ctx->ppid, f->op, f->val); |
419c58f11 [PATCH] PPID filt... |
452 |
} |
3c66251e5 [PATCH] add filte... |
453 |
break; |
1da177e4c Linux-2.6.12-rc2 |
454 |
case AUDIT_UID: |
ca57ec0f0 audit: Add typesp... |
455 |
result = audit_uid_comparator(cred->uid, f->op, f->uid); |
1da177e4c Linux-2.6.12-rc2 |
456 457 |
break; case AUDIT_EUID: |
ca57ec0f0 audit: Add typesp... |
458 |
result = audit_uid_comparator(cred->euid, f->op, f->uid); |
1da177e4c Linux-2.6.12-rc2 |
459 460 |
break; case AUDIT_SUID: |
ca57ec0f0 audit: Add typesp... |
461 |
result = audit_uid_comparator(cred->suid, f->op, f->uid); |
1da177e4c Linux-2.6.12-rc2 |
462 463 |
break; case AUDIT_FSUID: |
ca57ec0f0 audit: Add typesp... |
464 |
result = audit_uid_comparator(cred->fsuid, f->op, f->uid); |
1da177e4c Linux-2.6.12-rc2 |
465 466 |
break; case AUDIT_GID: |
ca57ec0f0 audit: Add typesp... |
467 |
result = audit_gid_comparator(cred->gid, f->op, f->gid); |
37eebe39c audit: improve GI... |
468 469 470 471 472 473 474 |
if (f->op == Audit_equal) { if (!result) result = in_group_p(f->gid); } else if (f->op == Audit_not_equal) { if (result) result = !in_group_p(f->gid); } |
1da177e4c Linux-2.6.12-rc2 |
475 476 |
break; case AUDIT_EGID: |
ca57ec0f0 audit: Add typesp... |
477 |
result = audit_gid_comparator(cred->egid, f->op, f->gid); |
37eebe39c audit: improve GI... |
478 479 480 481 482 483 484 |
if (f->op == Audit_equal) { if (!result) result = in_egroup_p(f->gid); } else if (f->op == Audit_not_equal) { if (result) result = !in_egroup_p(f->gid); } |
1da177e4c Linux-2.6.12-rc2 |
485 486 |
break; case AUDIT_SGID: |
ca57ec0f0 audit: Add typesp... |
487 |
result = audit_gid_comparator(cred->sgid, f->op, f->gid); |
1da177e4c Linux-2.6.12-rc2 |
488 489 |
break; case AUDIT_FSGID: |
ca57ec0f0 audit: Add typesp... |
490 |
result = audit_gid_comparator(cred->fsgid, f->op, f->gid); |
1da177e4c Linux-2.6.12-rc2 |
491 492 |
break; case AUDIT_PERS: |
93315ed6d [PATCH] audit str... |
493 |
result = audit_comparator(tsk->personality, f->op, f->val); |
1da177e4c Linux-2.6.12-rc2 |
494 |
break; |
2fd6f58ba [AUDIT] Don't all... |
495 |
case AUDIT_ARCH: |
9f8dbe9c9 whitespace fixes:... |
496 |
if (ctx) |
93315ed6d [PATCH] audit str... |
497 |
result = audit_comparator(ctx->arch, f->op, f->val); |
2fd6f58ba [AUDIT] Don't all... |
498 |
break; |
1da177e4c Linux-2.6.12-rc2 |
499 500 501 |
case AUDIT_EXIT: if (ctx && ctx->return_valid) |
93315ed6d [PATCH] audit str... |
502 |
result = audit_comparator(ctx->return_code, f->op, f->val); |
1da177e4c Linux-2.6.12-rc2 |
503 504 |
break; case AUDIT_SUCCESS: |
b01f2cc1c [AUDIT] Allow fil... |
505 |
if (ctx && ctx->return_valid) { |
93315ed6d [PATCH] audit str... |
506 507 |
if (f->val) result = audit_comparator(ctx->return_valid, f->op, AUDITSC_SUCCESS); |
b01f2cc1c [AUDIT] Allow fil... |
508 |
else |
93315ed6d [PATCH] audit str... |
509 |
result = audit_comparator(ctx->return_valid, f->op, AUDITSC_FAILURE); |
b01f2cc1c [AUDIT] Allow fil... |
510 |
} |
1da177e4c Linux-2.6.12-rc2 |
511 512 |
break; case AUDIT_DEVMAJOR: |
16c174bd9 audit: check curr... |
513 514 515 516 517 |
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... |
518 |
list_for_each_entry(n, &ctx->names_list, list) { |
16c174bd9 audit: check curr... |
519 520 |
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 |
521 522 523 524 525 526 527 |
++result; break; } } } break; case AUDIT_DEVMINOR: |
16c174bd9 audit: check curr... |
528 529 530 531 532 |
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... |
533 |
list_for_each_entry(n, &ctx->names_list, list) { |
16c174bd9 audit: check curr... |
534 535 |
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 |
536 537 538 539 540 541 542 |
++result; break; } } } break; case AUDIT_INODE: |
f368c07d7 [PATCH] audit: pa... |
543 |
if (name) |
db510fc5c audit: update AUD... |
544 |
result = audit_comparator(name->ino, f->op, f->val); |
f368c07d7 [PATCH] audit: pa... |
545 |
else if (ctx) { |
5195d8e21 audit: dynamicall... |
546 547 |
list_for_each_entry(n, &ctx->names_list, list) { if (audit_comparator(n->ino, f->op, f->val)) { |
1da177e4c Linux-2.6.12-rc2 |
548 549 550 551 552 553 |
++result; break; } } } break; |
efaffd6e4 audit: allow matc... |
554 555 |
case AUDIT_OBJ_UID: if (name) { |
ca57ec0f0 audit: Add typesp... |
556 |
result = audit_uid_comparator(name->uid, f->op, f->uid); |
efaffd6e4 audit: allow matc... |
557 558 |
} else if (ctx) { list_for_each_entry(n, &ctx->names_list, list) { |
ca57ec0f0 audit: Add typesp... |
559 |
if (audit_uid_comparator(n->uid, f->op, f->uid)) { |
efaffd6e4 audit: allow matc... |
560 561 562 563 564 565 |
++result; break; } } } break; |
54d3218b3 audit: allow audi... |
566 567 |
case AUDIT_OBJ_GID: if (name) { |
ca57ec0f0 audit: Add typesp... |
568 |
result = audit_gid_comparator(name->gid, f->op, f->gid); |
54d3218b3 audit: allow audi... |
569 570 |
} else if (ctx) { list_for_each_entry(n, &ctx->names_list, list) { |
ca57ec0f0 audit: Add typesp... |
571 |
if (audit_gid_comparator(n->gid, f->op, f->gid)) { |
54d3218b3 audit: allow audi... |
572 573 574 575 576 577 |
++result; break; } } } break; |
f368c07d7 [PATCH] audit: pa... |
578 |
case AUDIT_WATCH: |
ae7b8f410 Audit: clean up t... |
579 580 |
if (name) result = audit_watch_compare(rule->watch, name->ino, name->dev); |
f368c07d7 [PATCH] audit: pa... |
581 |
break; |
74c3cbe33 [PATCH] audit: wa... |
582 583 584 585 |
case AUDIT_DIR: if (ctx) result = match_tree_refs(ctx, rule->tree); break; |
1da177e4c Linux-2.6.12-rc2 |
586 587 588 |
case AUDIT_LOGINUID: result = 0; if (ctx) |
ca57ec0f0 audit: Add typesp... |
589 |
result = audit_uid_comparator(tsk->loginuid, f->op, f->uid); |
1da177e4c Linux-2.6.12-rc2 |
590 |
break; |
780a7654c audit: Make testi... |
591 592 593 |
case AUDIT_LOGINUID_SET: result = audit_comparator(audit_loginuid_set(tsk), f->op, f->val); break; |
3a6b9f85c [PATCH] audit: re... |
594 595 596 597 598 |
case AUDIT_SUBJ_USER: case AUDIT_SUBJ_ROLE: case AUDIT_SUBJ_TYPE: case AUDIT_SUBJ_SEN: case AUDIT_SUBJ_CLR: |
3dc7e3153 [PATCH] support f... |
599 600 601 602 603 |
/* 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... |
604 |
if (f->lsm_rule) { |
2ad312d20 [PATCH] Audit Fil... |
605 |
if (need_sid) { |
2a862b32f Audit: use new LS... |
606 |
security_task_getsecid(tsk, &sid); |
2ad312d20 [PATCH] Audit Fil... |
607 608 |
need_sid = 0; } |
d7a96f3a1 Audit: internally... |
609 |
result = security_audit_rule_match(sid, f->type, |
3dc7e3153 [PATCH] support f... |
610 |
f->op, |
04305e4af Audit: Final rena... |
611 |
f->lsm_rule, |
3dc7e3153 [PATCH] support f... |
612 |
ctx); |
2ad312d20 [PATCH] Audit Fil... |
613 |
} |
3dc7e3153 [PATCH] support f... |
614 |
break; |
6e5a2d1d3 [PATCH] audit: su... |
615 616 617 618 619 620 621 |
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... |
622 |
if (f->lsm_rule) { |
6e5a2d1d3 [PATCH] audit: su... |
623 624 |
/* Find files that match */ if (name) { |
d7a96f3a1 Audit: internally... |
625 |
result = security_audit_rule_match( |
6e5a2d1d3 [PATCH] audit: su... |
626 |
name->osid, f->type, f->op, |
04305e4af Audit: Final rena... |
627 |
f->lsm_rule, ctx); |
6e5a2d1d3 [PATCH] audit: su... |
628 |
} else if (ctx) { |
5195d8e21 audit: dynamicall... |
629 630 631 632 |
list_for_each_entry(n, &ctx->names_list, list) { if (security_audit_rule_match(n->osid, f->type, f->op, f->lsm_rule, ctx)) { |
6e5a2d1d3 [PATCH] audit: su... |
633 634 635 636 637 638 |
++result; break; } } } /* Find ipc objects that match */ |
a33e67510 sanitize audit_ip... |
639 640 641 642 643 644 |
if (!ctx || ctx->type != AUDIT_IPC) break; if (security_audit_rule_match(ctx->ipc.osid, f->type, f->op, f->lsm_rule, ctx)) ++result; |
6e5a2d1d3 [PATCH] audit: su... |
645 646 |
} break; |
1da177e4c Linux-2.6.12-rc2 |
647 648 649 650 651 |
case AUDIT_ARG0: case AUDIT_ARG1: case AUDIT_ARG2: case AUDIT_ARG3: if (ctx) |
93315ed6d [PATCH] audit str... |
652 |
result = audit_comparator(ctx->argv[f->type-AUDIT_ARG0], f->op, f->val); |
1da177e4c Linux-2.6.12-rc2 |
653 |
break; |
5adc8a6ad [PATCH] add rule ... |
654 655 656 657 |
case AUDIT_FILTERKEY: /* ignore this field for filtering */ result = 1; break; |
55669bfa1 [PATCH] audit: AU... |
658 659 660 |
case AUDIT_PERM: result = audit_match_perm(ctx, f->val); break; |
8b67dca94 [PATCH] new predi... |
661 662 663 |
case AUDIT_FILETYPE: result = audit_match_filetype(ctx, f->val); break; |
02d86a568 audit: allow inte... |
664 665 666 |
case AUDIT_FIELD_COMPARE: result = audit_field_compare(tsk, cred, f, ctx, name); break; |
1da177e4c Linux-2.6.12-rc2 |
667 |
} |
f56298835 audit: acquire cr... |
668 |
if (!result) |
1da177e4c Linux-2.6.12-rc2 |
669 670 |
return 0; } |
0590b9335 fixing audit rule... |
671 672 673 674 675 676 677 678 679 680 |
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 |
681 682 |
switch (rule->action) { case AUDIT_NEVER: *state = AUDIT_DISABLED; break; |
1da177e4c Linux-2.6.12-rc2 |
683 684 685 686 687 688 689 690 691 |
case AUDIT_ALWAYS: *state = AUDIT_RECORD_CONTEXT; break; } 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... |
692 |
static enum audit_state audit_filter_task(struct task_struct *tsk, char **key) |
1da177e4c Linux-2.6.12-rc2 |
693 694 695 696 697 |
{ struct audit_entry *e; enum audit_state state; rcu_read_lock(); |
0f45aa18e AUDIT: Allow filt... |
698 |
list_for_each_entry_rcu(e, &audit_filter_list[AUDIT_FILTER_TASK], list) { |
f56298835 audit: acquire cr... |
699 700 |
if (audit_filter_rules(tsk, &e->rule, NULL, NULL, &state, true)) { |
e048e02c8 make sure that fi... |
701 702 |
if (state == AUDIT_RECORD_CONTEXT) *key = kstrdup(e->rule.filterkey, GFP_ATOMIC); |
1da177e4c Linux-2.6.12-rc2 |
703 704 705 706 707 708 709 710 711 712 |
rcu_read_unlock(); return state; } } rcu_read_unlock(); return AUDIT_BUILD_CONTEXT; } /* At syscall entry and exit time, this filter is called if the * audit_state is not low enough that auditing cannot take place, but is |
23f32d18a AUDIT: Fix some s... |
713 |
* also not high enough that we already know we have to write an audit |
b0dd25a82 [PATCH] AUDIT: ke... |
714 |
* record (i.e., the state is AUDIT_SETUP_CONTEXT or AUDIT_BUILD_CONTEXT). |
1da177e4c Linux-2.6.12-rc2 |
715 716 717 718 719 720 |
*/ static enum audit_state audit_filter_syscall(struct task_struct *tsk, struct audit_context *ctx, struct list_head *list) { struct audit_entry *e; |
c38964959 AUDIT: Speed up a... |
721 |
enum audit_state state; |
1da177e4c Linux-2.6.12-rc2 |
722 |
|
351bb7225 AUDIT: Fix compil... |
723 |
if (audit_pid && tsk->tgid == audit_pid) |
f7056d64a AUDIT: Really exe... |
724 |
return AUDIT_DISABLED; |
1da177e4c Linux-2.6.12-rc2 |
725 |
rcu_read_lock(); |
c38964959 AUDIT: Speed up a... |
726 |
if (!list_empty(list)) { |
b63862f46 [PATCH] Filter ru... |
727 728 729 730 |
int word = AUDIT_WORD(ctx->major); int bit = AUDIT_BIT(ctx->major); list_for_each_entry_rcu(e, list, list) { |
f368c07d7 [PATCH] audit: pa... |
731 732 |
if ((e->rule.mask[word] & bit) == bit && audit_filter_rules(tsk, &e->rule, ctx, NULL, |
f56298835 audit: acquire cr... |
733 |
&state, false)) { |
f368c07d7 [PATCH] audit: pa... |
734 |
rcu_read_unlock(); |
0590b9335 fixing audit rule... |
735 |
ctx->current_state = state; |
f368c07d7 [PATCH] audit: pa... |
736 737 738 739 740 741 742 |
return state; } } } rcu_read_unlock(); return AUDIT_BUILD_CONTEXT; } |
5195d8e21 audit: dynamicall... |
743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 |
/* * 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) { int word, bit; int h = audit_hash_ino((u32)n->ino); struct list_head *list = &audit_inode_hash[h]; struct audit_entry *e; enum audit_state state; word = AUDIT_WORD(ctx->major); bit = AUDIT_BIT(ctx->major); if (list_empty(list)) return 0; list_for_each_entry_rcu(e, list, list) { if ((e->rule.mask[word] & bit) == bit && audit_filter_rules(tsk, &e->rule, ctx, n, &state, false)) { ctx->current_state = state; return 1; } } return 0; } /* At syscall exit time, this filter is called if any audit_names have been |
f368c07d7 [PATCH] audit: pa... |
774 |
* collected during syscall processing. We only check rules in sublists at hash |
5195d8e21 audit: dynamicall... |
775 |
* buckets applicable to the inode numbers in audit_names. |
f368c07d7 [PATCH] audit: pa... |
776 777 |
* Regarding audit_state, same rules apply as for audit_filter_syscall(). */ |
0590b9335 fixing audit rule... |
778 |
void audit_filter_inodes(struct task_struct *tsk, struct audit_context *ctx) |
f368c07d7 [PATCH] audit: pa... |
779 |
{ |
5195d8e21 audit: dynamicall... |
780 |
struct audit_names *n; |
f368c07d7 [PATCH] audit: pa... |
781 782 |
if (audit_pid && tsk->tgid == audit_pid) |
0590b9335 fixing audit rule... |
783 |
return; |
f368c07d7 [PATCH] audit: pa... |
784 785 |
rcu_read_lock(); |
f368c07d7 [PATCH] audit: pa... |
786 |
|
5195d8e21 audit: dynamicall... |
787 788 789 |
list_for_each_entry(n, &ctx->names_list, list) { if (audit_filter_inode_name(tsk, n, ctx)) break; |
0f45aa18e AUDIT: Allow filt... |
790 791 |
} rcu_read_unlock(); |
0f45aa18e AUDIT: Allow filt... |
792 |
} |
4a3eb726d audit: rename the... |
793 794 |
/* Transfer the audit context pointer to the caller, clearing it in the tsk's struct */ static inline struct audit_context *audit_take_context(struct task_struct *tsk, |
1da177e4c Linux-2.6.12-rc2 |
795 |
int return_valid, |
6d208da89 audit: Fix possib... |
796 |
long return_code) |
1da177e4c Linux-2.6.12-rc2 |
797 798 |
{ struct audit_context *context = tsk->audit_context; |
56179a6ec audit: drop some ... |
799 |
if (!context) |
1da177e4c Linux-2.6.12-rc2 |
800 801 |
return NULL; context->return_valid = return_valid; |
f701b75ed [AUDIT] return EI... |
802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 |
/* * 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; |
1da177e4c Linux-2.6.12-rc2 |
820 |
|
0590b9335 fixing audit rule... |
821 822 823 |
if (context->in_syscall && !context->dummy) { audit_filter_syscall(tsk, context, &audit_filter_list[AUDIT_FILTER_EXIT]); audit_filter_inodes(tsk, context); |
1da177e4c Linux-2.6.12-rc2 |
824 |
} |
1da177e4c Linux-2.6.12-rc2 |
825 826 827 |
tsk->audit_context = NULL; return context; } |
3f1c82502 audit: Audit proc... |
828 829 830 831 832 833 |
static inline void audit_proctitle_free(struct audit_context *context) { kfree(context->proctitle.value); context->proctitle.value = NULL; context->proctitle.len = 0; } |
1da177e4c Linux-2.6.12-rc2 |
834 835 |
static inline void audit_free_names(struct audit_context *context) { |
5195d8e21 audit: dynamicall... |
836 |
struct audit_names *n, *next; |
1da177e4c Linux-2.6.12-rc2 |
837 838 |
#if AUDIT_DEBUG == 2 |
0590b9335 fixing audit rule... |
839 |
if (context->put_count + context->ino_count != context->name_count) { |
34c474de7 audit: fix build ... |
840 |
int i = 0; |
f952d10ff audit: Use more c... |
841 842 843 844 |
pr_err("%s:%d(:%d): major=%d in_syscall=%d" " name_count=%d put_count=%d ino_count=%d" " [NOT freeing] ", __FILE__, __LINE__, |
1da177e4c Linux-2.6.12-rc2 |
845 846 847 |
context->serial, context->major, context->in_syscall, context->name_count, context->put_count, context->ino_count); |
5195d8e21 audit: dynamicall... |
848 |
list_for_each_entry(n, &context->names_list, list) { |
f952d10ff audit: Use more c... |
849 850 851 |
pr_err("names[%d] = %p = %s ", i++, n->name, n->name->name ?: "(null)"); |
8c8570fb8 [PATCH] Capture s... |
852 |
} |
1da177e4c Linux-2.6.12-rc2 |
853 854 855 856 857 858 859 860 |
dump_stack(); return; } #endif #if AUDIT_DEBUG context->put_count = 0; context->ino_count = 0; #endif |
5195d8e21 audit: dynamicall... |
861 862 863 |
list_for_each_entry_safe(n, next, &context->names_list, list) { list_del(&n->list); if (n->name && n->name_put) |
65ada7bc0 audit: destroy lo... |
864 |
final_putname(n->name); |
5195d8e21 audit: dynamicall... |
865 866 |
if (n->should_free) kfree(n); |
8c8570fb8 [PATCH] Capture s... |
867 |
} |
1da177e4c Linux-2.6.12-rc2 |
868 |
context->name_count = 0; |
44707fdf5 d_path: Use struc... |
869 870 871 |
path_put(&context->pwd); context->pwd.dentry = NULL; context->pwd.mnt = NULL; |
1da177e4c Linux-2.6.12-rc2 |
872 873 874 875 876 877 878 879 880 881 |
} 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... |
882 883 884 885 |
while ((aux = context->aux_pids)) { context->aux_pids = aux->next; kfree(aux); } |
1da177e4c Linux-2.6.12-rc2 |
886 |
} |
1da177e4c Linux-2.6.12-rc2 |
887 888 889 |
static inline struct audit_context *audit_alloc_context(enum audit_state state) { struct audit_context *context; |
17c6ee707 auditsc: Use kzal... |
890 891 |
context = kzalloc(sizeof(*context), GFP_KERNEL); if (!context) |
1da177e4c Linux-2.6.12-rc2 |
892 |
return NULL; |
e2c5adc88 auditsc: remove a... |
893 894 |
context->state = state; context->prio = state == AUDIT_RECORD_CONTEXT ? ~0ULL : 0; |
916d75761 Fix rule eviction... |
895 |
INIT_LIST_HEAD(&context->killed_trees); |
5195d8e21 audit: dynamicall... |
896 |
INIT_LIST_HEAD(&context->names_list); |
1da177e4c Linux-2.6.12-rc2 |
897 898 |
return context; } |
b0dd25a82 [PATCH] AUDIT: ke... |
899 900 901 902 903 |
/** * 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 |
904 905 |
* 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... |
906 907 |
* needed. */ |
1da177e4c Linux-2.6.12-rc2 |
908 909 910 911 |
int audit_alloc(struct task_struct *tsk) { struct audit_context *context; enum audit_state state; |
e048e02c8 make sure that fi... |
912 |
char *key = NULL; |
1da177e4c Linux-2.6.12-rc2 |
913 |
|
b593d384e [AUDIT] create co... |
914 |
if (likely(!audit_ever_enabled)) |
1da177e4c Linux-2.6.12-rc2 |
915 |
return 0; /* Return if not auditing. */ |
e048e02c8 make sure that fi... |
916 |
state = audit_filter_task(tsk, &key); |
d48d80512 audit_alloc: clea... |
917 918 |
if (state == AUDIT_DISABLED) { clear_tsk_thread_flag(tsk, TIF_SYSCALL_AUDIT); |
1da177e4c Linux-2.6.12-rc2 |
919 |
return 0; |
d48d80512 audit_alloc: clea... |
920 |
} |
1da177e4c Linux-2.6.12-rc2 |
921 922 |
if (!(context = audit_alloc_context(state))) { |
e048e02c8 make sure that fi... |
923 |
kfree(key); |
1da177e4c Linux-2.6.12-rc2 |
924 925 926 |
audit_log_lost("out of memory in audit_alloc"); return -ENOMEM; } |
e048e02c8 make sure that fi... |
927 |
context->filterkey = key; |
1da177e4c Linux-2.6.12-rc2 |
928 |
|
1da177e4c Linux-2.6.12-rc2 |
929 930 931 932 933 934 935 |
tsk->audit_context = context; set_tsk_thread_flag(tsk, TIF_SYSCALL_AUDIT); return 0; } static inline void audit_free_context(struct audit_context *context) { |
c62d773a3 audit: no nested ... |
936 937 938 939 940 941 |
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... |
942 |
audit_proctitle_free(context); |
c62d773a3 audit: no nested ... |
943 |
kfree(context); |
1da177e4c Linux-2.6.12-rc2 |
944 |
} |
e54dc2431 [PATCH] audit sig... |
945 |
static int audit_log_pid_context(struct audit_context *context, pid_t pid, |
cca080d9b userns: Convert a... |
946 |
kuid_t auid, kuid_t uid, unsigned int sessionid, |
4746ec5b0 [AUDIT] add sessi... |
947 |
u32 sid, char *comm) |
e54dc2431 [PATCH] audit sig... |
948 949 |
{ struct audit_buffer *ab; |
2a862b32f Audit: use new LS... |
950 |
char *ctx = NULL; |
e54dc2431 [PATCH] audit sig... |
951 952 953 954 955 |
u32 len; int rc = 0; ab = audit_log_start(context, GFP_KERNEL, AUDIT_OBJ_PID); if (!ab) |
6246ccab9 [AUDIT] do not pa... |
956 |
return rc; |
e54dc2431 [PATCH] audit sig... |
957 |
|
e1760bd5f userns: Convert t... |
958 959 |
audit_log_format(ab, "opid=%d oauid=%d ouid=%d oses=%d", pid, from_kuid(&init_user_ns, auid), |
cca080d9b userns: Convert a... |
960 |
from_kuid(&init_user_ns, uid), sessionid); |
ad395abec Audit: do not pri... |
961 962 963 964 965 966 967 968 |
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... |
969 |
} |
c2a7780ef [AUDIT] collect u... |
970 971 |
audit_log_format(ab, " ocomm="); audit_log_untrustedstring(ab, comm); |
e54dc2431 [PATCH] audit sig... |
972 |
audit_log_end(ab); |
e54dc2431 [PATCH] audit sig... |
973 974 975 |
return rc; } |
de6bbd1d3 [AUDIT] break lar... |
976 977 978 |
/* * to_send and len_sent accounting are very loose estimates. We aren't * really worried about a hard cap to MAX_EXECVE_AUDIT_LEN so much as being |
25985edce Fix common misspe... |
979 |
* within about 500 bytes (next page boundary) |
de6bbd1d3 [AUDIT] break lar... |
980 981 982 983 984 985 986 987 988 989 990 991 992 |
* * why snprintf? an int is up to 12 digits long. if we just assumed when * logging that a[%d]= was going to be 16 characters long we would be wasting * space in every audit message. In one 7500 byte message we can log up to * about 1000 min size arguments. That comes down to about 50% waste of space * if we didn't do the snprintf to find out how long arg_num_len was. */ static int audit_log_single_execve_arg(struct audit_context *context, struct audit_buffer **ab, int arg_num, size_t *len_sent, const char __user *p, char *buf) |
bdf4c48af audit: rework exe... |
993 |
{ |
de6bbd1d3 [AUDIT] break lar... |
994 995 |
char arg_num_len_buf[12]; const char __user *tmp_p = p; |
b87ce6e41 Audit: better est... |
996 997 |
/* how many digits are in arg_num? 5 is the length of ' a=""' */ size_t arg_num_len = snprintf(arg_num_len_buf, 12, "%d", arg_num) + 5; |
de6bbd1d3 [AUDIT] break lar... |
998 999 1000 1001 1002 1003 1004 |
size_t len, len_left, to_send; size_t max_execve_audit_len = MAX_EXECVE_AUDIT_LEN; unsigned int i, has_cntl = 0, too_long = 0; int ret; /* strnlen_user includes the null we don't want to send */ len_left = len = strnlen_user(p, MAX_ARG_STRLEN) - 1; |
bdf4c48af audit: rework exe... |
1005 |
|
de6bbd1d3 [AUDIT] break lar... |
1006 1007 1008 1009 1010 1011 |
/* * We just created this mm, if we can't find the strings * we just copied into it something is _very_ wrong. Similar * for strings that are too long, we should not have created * any. */ |
b0abcfc14 Audit: use == not... |
1012 |
if (unlikely((len == -1) || len > MAX_ARG_STRLEN - 1)) { |
de6bbd1d3 [AUDIT] break lar... |
1013 1014 |
WARN_ON(1); send_sig(SIGKILL, current, 0); |
b0abcfc14 Audit: use == not... |
1015 |
return -1; |
de6bbd1d3 [AUDIT] break lar... |
1016 |
} |
040b3a2df audit: fix two bu... |
1017 |
|
de6bbd1d3 [AUDIT] break lar... |
1018 1019 1020 1021 1022 1023 1024 |
/* walk the whole argument looking for non-ascii chars */ do { if (len_left > MAX_EXECVE_AUDIT_LEN) to_send = MAX_EXECVE_AUDIT_LEN; else to_send = len_left; ret = copy_from_user(buf, tmp_p, to_send); |
bdf4c48af audit: rework exe... |
1025 |
/* |
de6bbd1d3 [AUDIT] break lar... |
1026 1027 1028 |
* There is no reason for this copy to be short. We just * copied them here, and the mm hasn't been exposed to user- * space yet. |
bdf4c48af audit: rework exe... |
1029 |
*/ |
de6bbd1d3 [AUDIT] break lar... |
1030 |
if (ret) { |
bdf4c48af audit: rework exe... |
1031 1032 |
WARN_ON(1); send_sig(SIGKILL, current, 0); |
b0abcfc14 Audit: use == not... |
1033 |
return -1; |
bdf4c48af audit: rework exe... |
1034 |
} |
de6bbd1d3 [AUDIT] break lar... |
1035 1036 1037 1038 1039 1040 1041 1042 |
buf[to_send] = '\0'; has_cntl = audit_string_contains_control(buf, to_send); if (has_cntl) { /* * hex messages get logged as 2 bytes, so we can only * send half as much in each message */ max_execve_audit_len = MAX_EXECVE_AUDIT_LEN / 2; |
bdf4c48af audit: rework exe... |
1043 1044 |
break; } |
de6bbd1d3 [AUDIT] break lar... |
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 |
len_left -= to_send; tmp_p += to_send; } while (len_left > 0); len_left = len; if (len > max_execve_audit_len) too_long = 1; /* rewalk the argument actually logging the message */ for (i = 0; len_left > 0; i++) { int room_left; if (len_left > max_execve_audit_len) to_send = max_execve_audit_len; else to_send = len_left; /* do we have space left to send this argument in this ab? */ room_left = MAX_EXECVE_AUDIT_LEN - arg_num_len - *len_sent; if (has_cntl) room_left -= (to_send * 2); else room_left -= to_send; if (room_left < 0) { *len_sent = 0; audit_log_end(*ab); *ab = audit_log_start(context, GFP_KERNEL, AUDIT_EXECVE); if (!*ab) return 0; } |
bdf4c48af audit: rework exe... |
1076 |
|
bdf4c48af audit: rework exe... |
1077 |
/* |
de6bbd1d3 [AUDIT] break lar... |
1078 1079 1080 1081 |
* first record needs to say how long the original string was * so we can be sure nothing was lost. */ if ((i == 0) && (too_long)) |
ca96a895a audit: EXECVE rec... |
1082 |
audit_log_format(*ab, " a%d_len=%zu", arg_num, |
de6bbd1d3 [AUDIT] break lar... |
1083 1084 1085 1086 1087 1088 |
has_cntl ? 2*len : len); /* * normally arguments are small enough to fit and we already * filled buf above when we checked for control characters * so don't bother with another copy_from_user |
bdf4c48af audit: rework exe... |
1089 |
*/ |
de6bbd1d3 [AUDIT] break lar... |
1090 1091 1092 1093 |
if (len >= max_execve_audit_len) ret = copy_from_user(buf, p, to_send); else ret = 0; |
040b3a2df audit: fix two bu... |
1094 |
if (ret) { |
bdf4c48af audit: rework exe... |
1095 1096 |
WARN_ON(1); send_sig(SIGKILL, current, 0); |
b0abcfc14 Audit: use == not... |
1097 |
return -1; |
bdf4c48af audit: rework exe... |
1098 |
} |
de6bbd1d3 [AUDIT] break lar... |
1099 1100 1101 |
buf[to_send] = '\0'; /* actually log it */ |
ca96a895a audit: EXECVE rec... |
1102 |
audit_log_format(*ab, " a%d", arg_num); |
de6bbd1d3 [AUDIT] break lar... |
1103 1104 1105 1106 |
if (too_long) audit_log_format(*ab, "[%d]", i); audit_log_format(*ab, "="); if (has_cntl) |
b556f8ad5 Audit: standardiz... |
1107 |
audit_log_n_hex(*ab, buf, to_send); |
de6bbd1d3 [AUDIT] break lar... |
1108 |
else |
9d9609851 Audit: clean up a... |
1109 |
audit_log_string(*ab, buf); |
de6bbd1d3 [AUDIT] break lar... |
1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 |
p += to_send; len_left -= to_send; *len_sent += arg_num_len; if (has_cntl) *len_sent += to_send * 2; else *len_sent += to_send; } /* include the null we didn't log */ return len + 1; } static void audit_log_execve_info(struct audit_context *context, |
d9cfea91e audit: move audit... |
1124 |
struct audit_buffer **ab) |
de6bbd1d3 [AUDIT] break lar... |
1125 |
{ |
5afb8a3f9 audit: fix signed... |
1126 1127 |
int i, len; size_t len_sent = 0; |
de6bbd1d3 [AUDIT] break lar... |
1128 1129 |
const char __user *p; char *buf; |
bdf4c48af audit: rework exe... |
1130 |
|
d9cfea91e audit: move audit... |
1131 |
p = (const char __user *)current->mm->arg_start; |
bdf4c48af audit: rework exe... |
1132 |
|
d9cfea91e audit: move audit... |
1133 |
audit_log_format(*ab, "argc=%d", context->execve.argc); |
de6bbd1d3 [AUDIT] break lar... |
1134 1135 1136 1137 1138 1139 1140 1141 1142 |
/* * we need some kernel buffer to hold the userspace args. Just * allocate one big one rather than allocating one of the right size * for every single argument inside audit_log_single_execve_arg() * should be <8k allocation so should be pretty safe. */ buf = kmalloc(MAX_EXECVE_AUDIT_LEN + 1, GFP_KERNEL); if (!buf) { |
b7550787f audit: remove str... |
1143 |
audit_panic("out of memory for argv string"); |
de6bbd1d3 [AUDIT] break lar... |
1144 |
return; |
bdf4c48af audit: rework exe... |
1145 |
} |
de6bbd1d3 [AUDIT] break lar... |
1146 |
|
d9cfea91e audit: move audit... |
1147 |
for (i = 0; i < context->execve.argc; i++) { |
de6bbd1d3 [AUDIT] break lar... |
1148 1149 1150 1151 1152 1153 1154 |
len = audit_log_single_execve_arg(context, ab, i, &len_sent, p, buf); if (len <= 0) break; p += len; } kfree(buf); |
bdf4c48af audit: rework exe... |
1155 |
} |
a33e67510 sanitize audit_ip... |
1156 |
static void show_special(struct audit_context *context, int *call_panic) |
f3298dc4f sanitize audit_so... |
1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 |
{ 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; 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... |
1173 1174 |
case AUDIT_IPC: { u32 osid = context->ipc.osid; |
2570ebbd1 switch kern_ipc_p... |
1175 |
audit_log_format(ab, "ouid=%u ogid=%u mode=%#ho", |
cca080d9b userns: Convert a... |
1176 1177 1178 |
from_kuid(&init_user_ns, context->ipc.uid), from_kgid(&init_user_ns, context->ipc.gid), context->ipc.mode); |
a33e67510 sanitize audit_ip... |
1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 |
if (osid) { char *ctx = NULL; u32 len; 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... |
1190 1191 1192 1193 |
if (context->ipc.has_perm) { audit_log_end(ab); ab = audit_log_start(context, GFP_KERNEL, AUDIT_IPC_SET_PERM); |
0644ec0cc audit: catch poss... |
1194 1195 |
if (unlikely(!ab)) return; |
e816f370c sanitize audit_ip... |
1196 |
audit_log_format(ab, |
2570ebbd1 switch kern_ipc_p... |
1197 |
"qbytes=%lx ouid=%u ogid=%u mode=%#ho", |
e816f370c sanitize audit_ip... |
1198 1199 1200 1201 |
context->ipc.qbytes, context->ipc.perm_uid, context->ipc.perm_gid, context->ipc.perm_mode); |
e816f370c sanitize audit_ip... |
1202 |
} |
a33e67510 sanitize audit_ip... |
1203 |
break; } |
564f6993f sanitize audit_mq... |
1204 1205 |
case AUDIT_MQ_OPEN: { audit_log_format(ab, |
df0a42837 switch mq_open() ... |
1206 |
"oflag=0x%x mode=%#ho mq_flags=0x%lx mq_maxmsg=%ld " |
564f6993f sanitize audit_mq... |
1207 1208 1209 1210 1211 1212 1213 |
"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); break; } |
c32c8af43 sanitize AUDIT_MQ... |
1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 |
case AUDIT_MQ_SENDRECV: { audit_log_format(ab, "mqdes=%d msg_len=%zd msg_prio=%u " "abs_timeout_sec=%ld abs_timeout_nsec=%ld", context->mq_sendrecv.mqdes, context->mq_sendrecv.msg_len, context->mq_sendrecv.msg_prio, context->mq_sendrecv.abs_timeout.tv_sec, context->mq_sendrecv.abs_timeout.tv_nsec); break; } |
20114f71b sanitize audit_mq... |
1224 1225 1226 1227 1228 |
case AUDIT_MQ_NOTIFY: { audit_log_format(ab, "mqdes=%d sigev_signo=%d", context->mq_notify.mqdes, context->mq_notify.sigev_signo); break; } |
7392906ea sanitize audit_mq... |
1229 1230 1231 1232 1233 1234 1235 1236 1237 |
case AUDIT_MQ_GETSETATTR: { struct mq_attr *attr = &context->mq_getsetattr.mqstat; 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; } |
57f71a0af sanitize audit_lo... |
1238 1239 1240 1241 1242 1243 |
case AUDIT_CAPSET: { 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); break; } |
120a795da audit mmap |
1244 1245 1246 1247 |
case AUDIT_MMAP: { audit_log_format(ab, "fd=%d flags=0x%x", context->mmap.fd, context->mmap.flags); break; } |
d9cfea91e audit: move audit... |
1248 1249 1250 |
case AUDIT_EXECVE: { audit_log_execve_info(context, &ab); break; } |
f3298dc4f sanitize audit_so... |
1251 1252 1253 |
} audit_log_end(ab); } |
3f1c82502 audit: Audit proc... |
1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 |
static inline int audit_proctitle_rtrim(char *proctitle, int len) { char *end = proctitle + len - 1; 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; } static void audit_log_proctitle(struct task_struct *tsk, struct audit_context *context) { int res; char *buf; char *msg = "(null)"; int len = strlen(msg); 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 */ res = get_cmdline(tsk, buf, MAX_PROCTITLE_AUDIT_LEN); 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); } |
e495149b1 [PATCH] drop gfp_... |
1306 |
static void audit_log_exit(struct audit_context *context, struct task_struct *tsk) |
1da177e4c Linux-2.6.12-rc2 |
1307 |
{ |
9c7aa6aa7 [PATCH] change ls... |
1308 |
int i, call_panic = 0; |
1da177e4c Linux-2.6.12-rc2 |
1309 |
struct audit_buffer *ab; |
7551ced33 AUDIT: Defer free... |
1310 |
struct audit_aux_data *aux; |
5195d8e21 audit: dynamicall... |
1311 |
struct audit_names *n; |
1da177e4c Linux-2.6.12-rc2 |
1312 |
|
e495149b1 [PATCH] drop gfp_... |
1313 |
/* tsk == current */ |
3f2792ffb [PATCH] take fill... |
1314 |
context->personality = tsk->personality; |
e495149b1 [PATCH] drop gfp_... |
1315 1316 |
ab = audit_log_start(context, GFP_KERNEL, AUDIT_SYSCALL); |
1da177e4c Linux-2.6.12-rc2 |
1317 1318 |
if (!ab) return; /* audit_panic has been called */ |
bccf6ae08 AUDIT: Unify auid... |
1319 1320 |
audit_log_format(ab, "arch=%x syscall=%d", context->arch, context->major); |
1da177e4c Linux-2.6.12-rc2 |
1321 1322 1323 |
if (context->personality != PER_LINUX) audit_log_format(ab, " per=%lx", context->personality); if (context->return_valid) |
9f8dbe9c9 whitespace fixes:... |
1324 |
audit_log_format(ab, " success=%s exit=%ld", |
2fd6f58ba [AUDIT] Don't all... |
1325 1326 |
(context->return_valid==AUDITSC_SUCCESS)?"yes":"no", context->return_code); |
eb84a20e9 [PATCH] audit/acc... |
1327 |
|
1da177e4c Linux-2.6.12-rc2 |
1328 |
audit_log_format(ab, |
e23eb920b audit: export aud... |
1329 1330 1331 1332 1333 1334 |
" 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... |
1335 |
|
e495149b1 [PATCH] drop gfp_... |
1336 |
audit_log_task_info(ab, tsk); |
9d9609851 Audit: clean up a... |
1337 |
audit_log_key(ab, context->filterkey); |
1da177e4c Linux-2.6.12-rc2 |
1338 |
audit_log_end(ab); |
1da177e4c Linux-2.6.12-rc2 |
1339 |
|
7551ced33 AUDIT: Defer free... |
1340 |
for (aux = context->aux; aux; aux = aux->next) { |
c04049939 AUDIT: Add messag... |
1341 |
|
e495149b1 [PATCH] drop gfp_... |
1342 |
ab = audit_log_start(context, GFP_KERNEL, aux->type); |
1da177e4c Linux-2.6.12-rc2 |
1343 1344 |
if (!ab) continue; /* audit_panic has been called */ |
1da177e4c Linux-2.6.12-rc2 |
1345 |
switch (aux->type) { |
20ca73bc7 [PATCH] Audit of ... |
1346 |
|
3fc689e96 Any time fcaps or... |
1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 |
case AUDIT_BPRM_FCAPS: { struct audit_aux_data_bprm_fcaps *axs = (void *)aux; 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); audit_log_cap(ab, "new_pp", &axs->new_pcap.permitted); audit_log_cap(ab, "new_pi", &axs->new_pcap.inheritable); audit_log_cap(ab, "new_pe", &axs->new_pcap.effective); break; } |
1da177e4c Linux-2.6.12-rc2 |
1360 1361 |
} audit_log_end(ab); |
1da177e4c Linux-2.6.12-rc2 |
1362 |
} |
f3298dc4f sanitize audit_so... |
1363 |
if (context->type) |
a33e67510 sanitize audit_ip... |
1364 |
show_special(context, &call_panic); |
f3298dc4f sanitize audit_so... |
1365 |
|
157cf649a sanitize audit_fd... |
1366 1367 1368 1369 1370 1371 1372 1373 |
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 ... |
1374 1375 1376 1377 1378 1379 1380 1381 1382 |
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... |
1383 1384 |
for (aux = context->aux_pids; aux; aux = aux->next) { struct audit_aux_data_pids *axs = (void *)aux; |
e54dc2431 [PATCH] audit sig... |
1385 1386 1387 |
for (i = 0; i < axs->pid_count; i++) if (audit_log_pid_context(context, axs->target_pid[i], |
c2a7780ef [AUDIT] collect u... |
1388 1389 |
axs->target_auid[i], axs->target_uid[i], |
4746ec5b0 [AUDIT] add sessi... |
1390 |
axs->target_sessionid[i], |
c2a7780ef [AUDIT] collect u... |
1391 1392 |
axs->target_sid[i], axs->target_comm[i])) |
e54dc2431 [PATCH] audit sig... |
1393 |
call_panic = 1; |
a5cb013da [PATCH] auditing ... |
1394 |
} |
e54dc2431 [PATCH] audit sig... |
1395 1396 |
if (context->target_pid && audit_log_pid_context(context, context->target_pid, |
c2a7780ef [AUDIT] collect u... |
1397 |
context->target_auid, context->target_uid, |
4746ec5b0 [AUDIT] add sessi... |
1398 |
context->target_sessionid, |
c2a7780ef [AUDIT] collect u... |
1399 |
context->target_sid, context->target_comm)) |
e54dc2431 [PATCH] audit sig... |
1400 |
call_panic = 1; |
44707fdf5 d_path: Use struc... |
1401 |
if (context->pwd.dentry && context->pwd.mnt) { |
e495149b1 [PATCH] drop gfp_... |
1402 |
ab = audit_log_start(context, GFP_KERNEL, AUDIT_CWD); |
8f37d47c9 AUDIT: Record wor... |
1403 |
if (ab) { |
c158a35c8 audit: no leading... |
1404 |
audit_log_d_path(ab, " cwd=", &context->pwd); |
8f37d47c9 AUDIT: Record wor... |
1405 1406 1407 |
audit_log_end(ab); } } |
73241ccca [PATCH] Collect m... |
1408 |
|
5195d8e21 audit: dynamicall... |
1409 |
i = 0; |
79f6530cb audit: fix mq_ope... |
1410 1411 1412 |
list_for_each_entry(n, &context->names_list, list) { if (n->hidden) continue; |
b24a30a73 audit: fix event ... |
1413 |
audit_log_name(context, n, NULL, i++, &call_panic); |
79f6530cb audit: fix mq_ope... |
1414 |
} |
c0641f28d [AUDIT] Add End o... |
1415 |
|
3f1c82502 audit: Audit proc... |
1416 |
audit_log_proctitle(tsk, context); |
c0641f28d [AUDIT] Add End o... |
1417 1418 1419 1420 |
/* 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... |
1421 1422 |
if (call_panic) audit_panic("error converting sid to string"); |
1da177e4c Linux-2.6.12-rc2 |
1423 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
1424 1425 1426 1427 |
/** * audit_free - free a per-task audit context * @tsk: task whose audit context block to free * |
fa84cb935 [PATCH] move call... |
1428 |
* Called from copy_process and do_exit |
b0dd25a82 [PATCH] AUDIT: ke... |
1429 |
*/ |
a4ff8dba7 audit: inline aud... |
1430 |
void __audit_free(struct task_struct *tsk) |
1da177e4c Linux-2.6.12-rc2 |
1431 1432 |
{ struct audit_context *context; |
4a3eb726d audit: rename the... |
1433 |
context = audit_take_context(tsk, 0, 0); |
56179a6ec audit: drop some ... |
1434 |
if (!context) |
1da177e4c Linux-2.6.12-rc2 |
1435 1436 1437 |
return; /* Check for system calls that do not go through the exit |
9f8dbe9c9 whitespace fixes:... |
1438 1439 |
* function (e.g., exit_group), then free context block. * We use GFP_ATOMIC here because we might be doing this |
f55619642 AUDIT: Avoid sche... |
1440 |
* in the context of the idle thread */ |
e495149b1 [PATCH] drop gfp_... |
1441 |
/* that can happen only if we are called from do_exit() */ |
0590b9335 fixing audit rule... |
1442 |
if (context->in_syscall && context->current_state == AUDIT_RECORD_CONTEXT) |
e495149b1 [PATCH] drop gfp_... |
1443 |
audit_log_exit(context, tsk); |
916d75761 Fix rule eviction... |
1444 1445 |
if (!list_empty(&context->killed_trees)) audit_kill_trees(&context->killed_trees); |
1da177e4c Linux-2.6.12-rc2 |
1446 1447 1448 |
audit_free_context(context); } |
b0dd25a82 [PATCH] AUDIT: ke... |
1449 1450 |
/** * audit_syscall_entry - fill in an audit record at syscall entry |
b0dd25a82 [PATCH] AUDIT: ke... |
1451 1452 1453 1454 1455 1456 1457 1458 |
* @arch: architecture type * @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 |
1459 1460 1461 1462 1463 |
* 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 * per-task filter or from the per-syscall filter is AUDIT_RECORD_CONTEXT, * 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... |
1464 1465 |
* be written). */ |
b05d8447e audit: inline aud... |
1466 |
void __audit_syscall_entry(int arch, int major, |
1da177e4c Linux-2.6.12-rc2 |
1467 1468 1469 |
unsigned long a1, unsigned long a2, unsigned long a3, unsigned long a4) { |
5411be59d [PATCH] drop task... |
1470 |
struct task_struct *tsk = current; |
1da177e4c Linux-2.6.12-rc2 |
1471 1472 |
struct audit_context *context = tsk->audit_context; enum audit_state state; |
56179a6ec audit: drop some ... |
1473 |
if (!context) |
86a1c34a9 x86_64 syscall au... |
1474 |
return; |
1da177e4c Linux-2.6.12-rc2 |
1475 |
|
1da177e4c Linux-2.6.12-rc2 |
1476 1477 1478 1479 |
BUG_ON(context->in_syscall || context->name_count); if (!audit_enabled) return; |
2fd6f58ba [AUDIT] Don't all... |
1480 |
context->arch = arch; |
1da177e4c Linux-2.6.12-rc2 |
1481 1482 1483 1484 1485 1486 1487 |
context->major = major; context->argv[0] = a1; context->argv[1] = a2; context->argv[2] = a3; context->argv[3] = a4; state = context->state; |
d51374adf [PATCH] mark cont... |
1488 |
context->dummy = !audit_n_rules; |
0590b9335 fixing audit rule... |
1489 1490 |
if (!context->dummy && state == AUDIT_BUILD_CONTEXT) { context->prio = 0; |
0f45aa18e AUDIT: Allow filt... |
1491 |
state = audit_filter_syscall(tsk, context, &audit_filter_list[AUDIT_FILTER_ENTRY]); |
0590b9335 fixing audit rule... |
1492 |
} |
56179a6ec audit: drop some ... |
1493 |
if (state == AUDIT_DISABLED) |
1da177e4c Linux-2.6.12-rc2 |
1494 |
return; |
ce625a801 AUDIT: Reduce con... |
1495 |
context->serial = 0; |
1da177e4c Linux-2.6.12-rc2 |
1496 1497 |
context->ctime = CURRENT_TIME; context->in_syscall = 1; |
0590b9335 fixing audit rule... |
1498 |
context->current_state = state; |
419c58f11 [PATCH] PPID filt... |
1499 |
context->ppid = 0; |
1da177e4c Linux-2.6.12-rc2 |
1500 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
1501 1502 |
/** * audit_syscall_exit - deallocate audit context after a system call |
42ae610c1 kernel-doc: fix n... |
1503 1504 |
* @success: success value of the syscall * @return_code: return value of the syscall |
b0dd25a82 [PATCH] AUDIT: ke... |
1505 1506 |
* * Tear down after system call. If the audit context has been marked as |
1da177e4c Linux-2.6.12-rc2 |
1507 |
* auditable (either because of the AUDIT_RECORD_CONTEXT state from |
42ae610c1 kernel-doc: fix n... |
1508 |
* filtering, or because some other part of the kernel wrote an audit |
1da177e4c Linux-2.6.12-rc2 |
1509 |
* message), then write out the syscall information. In call cases, |
b0dd25a82 [PATCH] AUDIT: ke... |
1510 1511 |
* free the names stored from getname(). */ |
d7e7528bc Audit: push audit... |
1512 |
void __audit_syscall_exit(int success, long return_code) |
1da177e4c Linux-2.6.12-rc2 |
1513 |
{ |
5411be59d [PATCH] drop task... |
1514 |
struct task_struct *tsk = current; |
1da177e4c Linux-2.6.12-rc2 |
1515 |
struct audit_context *context; |
d7e7528bc Audit: push audit... |
1516 1517 1518 1519 |
if (success) success = AUDITSC_SUCCESS; else success = AUDITSC_FAILURE; |
1da177e4c Linux-2.6.12-rc2 |
1520 |
|
4a3eb726d audit: rename the... |
1521 |
context = audit_take_context(tsk, success, return_code); |
56179a6ec audit: drop some ... |
1522 |
if (!context) |
97e94c453 [PATCH] no need t... |
1523 |
return; |
1da177e4c Linux-2.6.12-rc2 |
1524 |
|
0590b9335 fixing audit rule... |
1525 |
if (context->in_syscall && context->current_state == AUDIT_RECORD_CONTEXT) |
e495149b1 [PATCH] drop gfp_... |
1526 |
audit_log_exit(context, tsk); |
1da177e4c Linux-2.6.12-rc2 |
1527 1528 |
context->in_syscall = 0; |
0590b9335 fixing audit rule... |
1529 |
context->prio = context->state == AUDIT_RECORD_CONTEXT ? ~0ULL : 0; |
2fd6f58ba [AUDIT] Don't all... |
1530 |
|
916d75761 Fix rule eviction... |
1531 1532 |
if (!list_empty(&context->killed_trees)) audit_kill_trees(&context->killed_trees); |
c62d773a3 audit: no nested ... |
1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 |
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; if (context->state != AUDIT_RECORD_CONTEXT) { kfree(context->filterkey); context->filterkey = NULL; |
1da177e4c Linux-2.6.12-rc2 |
1546 |
} |
c62d773a3 audit: no nested ... |
1547 |
tsk->audit_context = context; |
1da177e4c Linux-2.6.12-rc2 |
1548 |
} |
74c3cbe33 [PATCH] audit: wa... |
1549 1550 1551 1552 1553 1554 1555 |
static inline void handle_one(const struct inode *inode) { #ifdef CONFIG_AUDIT_TREE struct audit_context *context; struct audit_tree_refs *p; struct audit_chunk *chunk; int count; |
e61ce8673 fsnotify: rename ... |
1556 |
if (likely(hlist_empty(&inode->i_fsnotify_marks))) |
74c3cbe33 [PATCH] audit: wa... |
1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 |
return; context = current->audit_context; 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... |
1569 1570 |
pr_warn("out of memory, audit has lost a tree reference "); |
74c3cbe33 [PATCH] audit: wa... |
1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 |
audit_set_auditable(context); audit_put_chunk(chunk); unroll_tree_refs(context, p, count); return; } put_tree_ref(context, chunk); #endif } static void handle_path(const struct dentry *dentry) { #ifdef CONFIG_AUDIT_TREE struct audit_context *context; struct audit_tree_refs *p; const struct dentry *d, *parent; struct audit_chunk *drop; unsigned long seq; int count; context = current->audit_context; p = context->trees; count = context->tree_count; retry: drop = NULL; d = dentry; rcu_read_lock(); seq = read_seqbegin(&rename_lock); for(;;) { struct inode *inode = d->d_inode; |
e61ce8673 fsnotify: rename ... |
1600 |
if (inode && unlikely(!hlist_empty(&inode->i_fsnotify_marks))) { |
74c3cbe33 [PATCH] audit: wa... |
1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 |
struct audit_chunk *chunk; 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... |
1629 1630 |
pr_warn("out of memory, audit has lost a tree reference "); |
74c3cbe33 [PATCH] audit: wa... |
1631 1632 1633 1634 1635 1636 1637 |
unroll_tree_refs(context, p, count); audit_set_auditable(context); return; } rcu_read_unlock(); #endif } |
78e2e802a audit: add a new ... |
1638 1639 |
static struct audit_names *audit_alloc_name(struct audit_context *context, unsigned char type) |
5195d8e21 audit: dynamicall... |
1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 |
{ 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; } aname->ino = (unsigned long)-1; |
78e2e802a audit: add a new ... |
1654 |
aname->type = type; |
5195d8e21 audit: dynamicall... |
1655 1656 1657 1658 1659 1660 1661 1662 |
list_add_tail(&aname->list, &context->names_list); context->name_count++; #if AUDIT_DEBUG context->ino_count++; #endif return aname; } |
b0dd25a82 [PATCH] AUDIT: ke... |
1663 |
/** |
7ac86265d audit: allow audi... |
1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 |
* audit_reusename - fill out filename with info from existing entry * @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) { struct audit_context *context = current->audit_context; struct audit_names *n; list_for_each_entry(n, &context->names_list, list) { if (!n->name) continue; if (n->name->uptr == uptr) return n->name; } return NULL; } /** |
b0dd25a82 [PATCH] AUDIT: ke... |
1687 1688 1689 1690 1691 1692 |
* audit_getname - add a name to the list * @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... |
1693 |
void __audit_getname(struct filename *name) |
1da177e4c Linux-2.6.12-rc2 |
1694 1695 |
{ struct audit_context *context = current->audit_context; |
5195d8e21 audit: dynamicall... |
1696 |
struct audit_names *n; |
1da177e4c Linux-2.6.12-rc2 |
1697 |
|
1da177e4c Linux-2.6.12-rc2 |
1698 1699 |
if (!context->in_syscall) { #if AUDIT_DEBUG == 2 |
f952d10ff audit: Use more c... |
1700 1701 |
pr_err("%s:%d(:%d): ignoring getname(%p) ", |
1da177e4c Linux-2.6.12-rc2 |
1702 1703 1704 1705 1706 |
__FILE__, __LINE__, context->serial, name); dump_stack(); #endif return; } |
5195d8e21 audit: dynamicall... |
1707 |
|
91a27b2a7 vfs: define struc... |
1708 1709 1710 1711 |
#if AUDIT_DEBUG /* The filename _must_ have a populated ->name */ BUG_ON(!name->name); #endif |
78e2e802a audit: add a new ... |
1712 |
n = audit_alloc_name(context, AUDIT_TYPE_UNKNOWN); |
5195d8e21 audit: dynamicall... |
1713 1714 1715 1716 1717 1718 |
if (!n) return; n->name = name; n->name_len = AUDIT_NAME_FULL; n->name_put = true; |
adb5c2473 audit: make audit... |
1719 |
name->aname = n; |
5195d8e21 audit: dynamicall... |
1720 |
|
f7ad3c6be vfs: add helpers ... |
1721 1722 |
if (!context->pwd.dentry) get_fs_pwd(current->fs, &context->pwd); |
1da177e4c Linux-2.6.12-rc2 |
1723 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
1724 1725 1726 1727 1728 1729 1730 |
/* audit_putname - intercept a putname request * @name: name to intercept and delay for putname * * If we have stored the name from getname in the audit context, * then we delay the putname until syscall exit. * Called from include/linux/fs.h:putname(). */ |
91a27b2a7 vfs: define struc... |
1731 |
void audit_putname(struct filename *name) |
1da177e4c Linux-2.6.12-rc2 |
1732 1733 1734 1735 |
{ struct audit_context *context = current->audit_context; BUG_ON(!context); |
c4ad8f98b execve: use 'stru... |
1736 |
if (!name->aname || !context->in_syscall) { |
1da177e4c Linux-2.6.12-rc2 |
1737 |
#if AUDIT_DEBUG == 2 |
f952d10ff audit: Use more c... |
1738 1739 |
pr_err("%s:%d(:%d): final_putname(%p) ", |
1da177e4c Linux-2.6.12-rc2 |
1740 1741 |
__FILE__, __LINE__, context->serial, name); if (context->name_count) { |
5195d8e21 audit: dynamicall... |
1742 |
struct audit_names *n; |
34c474de7 audit: fix build ... |
1743 |
int i = 0; |
5195d8e21 audit: dynamicall... |
1744 1745 |
list_for_each_entry(n, &context->names_list, list) |
f952d10ff audit: Use more c... |
1746 1747 1748 |
pr_err("name[%d] = %p = %s ", i++, n->name, n->name->name ?: "(null)"); |
5195d8e21 audit: dynamicall... |
1749 |
} |
1da177e4c Linux-2.6.12-rc2 |
1750 |
#endif |
65ada7bc0 audit: destroy lo... |
1751 |
final_putname(name); |
1da177e4c Linux-2.6.12-rc2 |
1752 1753 1754 1755 1756 |
} #if AUDIT_DEBUG else { ++context->put_count; if (context->put_count > context->name_count) { |
f952d10ff audit: Use more c... |
1757 1758 1759 |
pr_err("%s:%d(:%d): major=%d in_syscall=%d putname(%p)" " name_count=%d put_count=%d ", |
1da177e4c Linux-2.6.12-rc2 |
1760 1761 |
__FILE__, __LINE__, context->serial, context->major, |
91a27b2a7 vfs: define struc... |
1762 1763 |
context->in_syscall, name->name, context->name_count, context->put_count); |
1da177e4c Linux-2.6.12-rc2 |
1764 1765 1766 1767 1768 |
dump_stack(); } } #endif } |
b0dd25a82 [PATCH] AUDIT: ke... |
1769 |
/** |
bfcec7087 audit: set the na... |
1770 |
* __audit_inode - store the inode and device from a lookup |
b0dd25a82 [PATCH] AUDIT: ke... |
1771 |
* @name: name being audited |
481968f44 auditsc: fix kern... |
1772 |
* @dentry: dentry being audited |
79f6530cb audit: fix mq_ope... |
1773 |
* @flags: attributes for this particular entry |
b0dd25a82 [PATCH] AUDIT: ke... |
1774 |
*/ |
adb5c2473 audit: make audit... |
1775 |
void __audit_inode(struct filename *name, const struct dentry *dentry, |
79f6530cb audit: fix mq_ope... |
1776 |
unsigned int flags) |
1da177e4c Linux-2.6.12-rc2 |
1777 |
{ |
1da177e4c Linux-2.6.12-rc2 |
1778 |
struct audit_context *context = current->audit_context; |
74c3cbe33 [PATCH] audit: wa... |
1779 |
const struct inode *inode = dentry->d_inode; |
5195d8e21 audit: dynamicall... |
1780 |
struct audit_names *n; |
79f6530cb audit: fix mq_ope... |
1781 |
bool parent = flags & AUDIT_INODE_PARENT; |
1da177e4c Linux-2.6.12-rc2 |
1782 1783 1784 |
if (!context->in_syscall) return; |
5195d8e21 audit: dynamicall... |
1785 |
|
9cec9d68a audit: no need to... |
1786 1787 |
if (!name) goto out_alloc; |
adb5c2473 audit: make audit... |
1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 |
#if AUDIT_DEBUG /* The struct filename _must_ have a populated ->name */ BUG_ON(!name->name); #endif /* * 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... |
1807 |
list_for_each_entry_reverse(n, &context->names_list, list) { |
bfcec7087 audit: set the na... |
1808 |
/* does the name pointer match? */ |
adb5c2473 audit: make audit... |
1809 |
if (!n->name || n->name->name != name->name) |
bfcec7087 audit: set the na... |
1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 |
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 |
1821 |
} |
5195d8e21 audit: dynamicall... |
1822 |
|
9cec9d68a audit: no need to... |
1823 |
out_alloc: |
bfcec7087 audit: set the na... |
1824 1825 1826 |
/* unable to find the name from a previous getname(). Allocate a new * anonymous entry. */ |
78e2e802a audit: add a new ... |
1827 |
n = audit_alloc_name(context, AUDIT_TYPE_NORMAL); |
5195d8e21 audit: dynamicall... |
1828 1829 1830 |
if (!n) return; out: |
bfcec7087 audit: set the na... |
1831 |
if (parent) { |
91a27b2a7 vfs: define struc... |
1832 |
n->name_len = n->name ? parent_len(n->name->name) : AUDIT_NAME_FULL; |
bfcec7087 audit: set the na... |
1833 |
n->type = AUDIT_TYPE_PARENT; |
79f6530cb audit: fix mq_ope... |
1834 1835 |
if (flags & AUDIT_INODE_HIDDEN) n->hidden = true; |
bfcec7087 audit: set the na... |
1836 1837 1838 1839 |
} else { n->name_len = AUDIT_NAME_FULL; n->type = AUDIT_TYPE_NORMAL; } |
74c3cbe33 [PATCH] audit: wa... |
1840 |
handle_path(dentry); |
5195d8e21 audit: dynamicall... |
1841 |
audit_copy_inode(n, dentry, inode); |
73241ccca [PATCH] Collect m... |
1842 1843 1844 |
} /** |
c43a25abb audit: reverse ar... |
1845 |
* __audit_inode_child - collect inode info for created/removed objects |
73d3ec5ab [PATCH] fix misse... |
1846 |
* @parent: inode of dentry parent |
c43a25abb audit: reverse ar... |
1847 |
* @dentry: dentry being audited |
4fa6b5ecb audit: overhaul _... |
1848 |
* @type: AUDIT_TYPE_* value that we're looking for |
73241ccca [PATCH] Collect m... |
1849 1850 1851 1852 1853 1854 1855 1856 1857 |
* * 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. */ |
c43a25abb audit: reverse ar... |
1858 |
void __audit_inode_child(const struct inode *parent, |
4fa6b5ecb audit: overhaul _... |
1859 1860 |
const struct dentry *dentry, const unsigned char type) |
73241ccca [PATCH] Collect m... |
1861 |
{ |
73241ccca [PATCH] Collect m... |
1862 |
struct audit_context *context = current->audit_context; |
5a190ae69 [PATCH] pass dent... |
1863 |
const struct inode *inode = dentry->d_inode; |
cccc6bba3 Lose the first ar... |
1864 |
const char *dname = dentry->d_name.name; |
4fa6b5ecb audit: overhaul _... |
1865 |
struct audit_names *n, *found_parent = NULL, *found_child = NULL; |
73241ccca [PATCH] Collect m... |
1866 1867 1868 |
if (!context->in_syscall) return; |
74c3cbe33 [PATCH] audit: wa... |
1869 1870 |
if (inode) handle_one(inode); |
73241ccca [PATCH] Collect m... |
1871 |
|
4fa6b5ecb audit: overhaul _... |
1872 |
/* look for a parent entry first */ |
5195d8e21 audit: dynamicall... |
1873 |
list_for_each_entry(n, &context->names_list, list) { |
4fa6b5ecb audit: overhaul _... |
1874 |
if (!n->name || n->type != AUDIT_TYPE_PARENT) |
5712e88f2 [PATCH] match aud... |
1875 1876 1877 |
continue; if (n->ino == parent->i_ino && |
91a27b2a7 vfs: define struc... |
1878 |
!audit_compare_dname_path(dname, n->name->name, n->name_len)) { |
4fa6b5ecb audit: overhaul _... |
1879 1880 |
found_parent = n; break; |
f368c07d7 [PATCH] audit: pa... |
1881 |
} |
5712e88f2 [PATCH] match aud... |
1882 |
} |
73241ccca [PATCH] Collect m... |
1883 |
|
4fa6b5ecb audit: overhaul _... |
1884 |
/* is there a matching child entry? */ |
5195d8e21 audit: dynamicall... |
1885 |
list_for_each_entry(n, &context->names_list, list) { |
4fa6b5ecb audit: overhaul _... |
1886 1887 1888 1889 1890 1891 |
/* can only match entries that have a name */ if (!n->name || n->type != type) continue; /* if we found a parent, make sure this one is a child of it */ if (found_parent && (n->name != found_parent->name)) |
5712e88f2 [PATCH] match aud... |
1892 |
continue; |
91a27b2a7 vfs: define struc... |
1893 1894 |
if (!strcmp(dname, n->name->name) || !audit_compare_dname_path(dname, n->name->name, |
4fa6b5ecb audit: overhaul _... |
1895 1896 |
found_parent ? found_parent->name_len : |
e3d6b07b8 audit: optimize a... |
1897 |
AUDIT_NAME_FULL)) { |
4fa6b5ecb audit: overhaul _... |
1898 1899 |
found_child = n; break; |
5712e88f2 [PATCH] match aud... |
1900 |
} |
ac9910ce0 [PATCH] name_coun... |
1901 |
} |
5712e88f2 [PATCH] match aud... |
1902 |
|
5712e88f2 [PATCH] match aud... |
1903 |
if (!found_parent) { |
4fa6b5ecb audit: overhaul _... |
1904 1905 |
/* create a new, "anonymous" parent record */ n = audit_alloc_name(context, AUDIT_TYPE_PARENT); |
5195d8e21 audit: dynamicall... |
1906 |
if (!n) |
ac9910ce0 [PATCH] name_coun... |
1907 |
return; |
5195d8e21 audit: dynamicall... |
1908 |
audit_copy_inode(n, NULL, parent); |
73d3ec5ab [PATCH] fix misse... |
1909 |
} |
5712e88f2 [PATCH] match aud... |
1910 1911 |
if (!found_child) { |
4fa6b5ecb audit: overhaul _... |
1912 1913 |
found_child = audit_alloc_name(context, type); if (!found_child) |
5712e88f2 [PATCH] match aud... |
1914 |
return; |
5712e88f2 [PATCH] match aud... |
1915 1916 1917 1918 1919 |
/* 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 _... |
1920 1921 |
found_child->name = found_parent->name; found_child->name_len = AUDIT_NAME_FULL; |
5712e88f2 [PATCH] match aud... |
1922 |
/* don't call __putname() */ |
4fa6b5ecb audit: overhaul _... |
1923 |
found_child->name_put = false; |
5712e88f2 [PATCH] match aud... |
1924 |
} |
5712e88f2 [PATCH] match aud... |
1925 |
} |
4fa6b5ecb audit: overhaul _... |
1926 1927 1928 1929 |
if (inode) audit_copy_inode(found_child, dentry, inode); else found_child->ino = (unsigned long)-1; |
3e2efce06 [PATCH] fix fault... |
1930 |
} |
50e437d52 SUNRPC: Convert r... |
1931 |
EXPORT_SYMBOL_GPL(__audit_inode_child); |
3e2efce06 [PATCH] fix fault... |
1932 1933 |
/** |
b0dd25a82 [PATCH] AUDIT: ke... |
1934 1935 1936 1937 1938 1939 1940 |
* auditsc_get_stamp - get local copies of audit_context values * @ctx: audit_context for the task * @t: timespec to store time recorded in the audit_context * @serial: serial value that is recorded in the audit_context * * Also sets the context as auditable. */ |
48887e63d [PATCH] fix broke... |
1941 |
int auditsc_get_stamp(struct audit_context *ctx, |
bfb4496e7 AUDIT: Assign ser... |
1942 |
struct timespec *t, unsigned int *serial) |
1da177e4c Linux-2.6.12-rc2 |
1943 |
{ |
48887e63d [PATCH] fix broke... |
1944 1945 |
if (!ctx->in_syscall) return 0; |
ce625a801 AUDIT: Reduce con... |
1946 1947 |
if (!ctx->serial) ctx->serial = audit_serial(); |
bfb4496e7 AUDIT: Assign ser... |
1948 1949 1950 |
t->tv_sec = ctx->ctime.tv_sec; t->tv_nsec = ctx->ctime.tv_nsec; *serial = ctx->serial; |
0590b9335 fixing audit rule... |
1951 1952 1953 1954 |
if (!ctx->prio) { ctx->prio = 1; ctx->current_state = AUDIT_RECORD_CONTEXT; } |
48887e63d [PATCH] fix broke... |
1955 |
return 1; |
1da177e4c Linux-2.6.12-rc2 |
1956 |
} |
4746ec5b0 [AUDIT] add sessi... |
1957 1958 |
/* global counter which is incremented every time something logs in */ static atomic_t session_id = ATOMIC_INIT(0); |
da0a61049 audit: loginuid f... |
1959 1960 |
static int audit_set_loginuid_perm(kuid_t loginuid) { |
da0a61049 audit: loginuid f... |
1961 1962 1963 |
/* if we are unset, we don't need privs */ if (!audit_loginuid_set(current)) return 0; |
21b85c31d audit: audit feat... |
1964 1965 1966 |
/* if AUDIT_FEATURE_LOGINUID_IMMUTABLE means never ever allow a change*/ if (is_audit_feature_set(AUDIT_FEATURE_LOGINUID_IMMUTABLE)) return -EPERM; |
83fa6bbe4 audit: remove CON... |
1967 1968 1969 |
/* it is set, you need permission */ if (!capable(CAP_AUDIT_CONTROL)) return -EPERM; |
d040e5af3 audit: audit feat... |
1970 1971 1972 |
/* reject if this is not an unset and we don't allow that */ if (is_audit_feature_set(AUDIT_FEATURE_ONLY_UNSET_LOGINUID) && uid_valid(loginuid)) return -EPERM; |
83fa6bbe4 audit: remove CON... |
1973 |
return 0; |
da0a61049 audit: loginuid f... |
1974 1975 1976 1977 1978 1979 1980 |
} static void audit_log_set_loginuid(kuid_t koldloginuid, kuid_t kloginuid, unsigned int oldsessionid, unsigned int sessionid, int rc) { struct audit_buffer *ab; |
5ee9a75c9 audit: fix dangli... |
1981 |
uid_t uid, oldloginuid, loginuid; |
da0a61049 audit: loginuid f... |
1982 |
|
c2412d91c audit: don't gene... |
1983 1984 |
if (!audit_enabled) return; |
da0a61049 audit: loginuid f... |
1985 |
uid = from_kuid(&init_user_ns, task_uid(current)); |
5ee9a75c9 audit: fix dangli... |
1986 1987 |
oldloginuid = from_kuid(&init_user_ns, koldloginuid); loginuid = from_kuid(&init_user_ns, kloginuid), |
da0a61049 audit: loginuid f... |
1988 1989 1990 1991 |
ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_LOGIN); if (!ab) return; |
ddfad8aff audit: include su... |
1992 1993 1994 1995 |
audit_log_format(ab, "pid=%d uid=%u", task_pid_nr(current), uid); audit_log_task_context(ab); audit_log_format(ab, " old-auid=%u auid=%u old-ses=%u ses=%u res=%d", oldloginuid, loginuid, oldsessionid, sessionid, !rc); |
da0a61049 audit: loginuid f... |
1996 1997 |
audit_log_end(ab); } |
b0dd25a82 [PATCH] AUDIT: ke... |
1998 |
/** |
0a300be6d audit: remove tas... |
1999 |
* audit_set_loginuid - set current task's audit_context loginuid |
b0dd25a82 [PATCH] AUDIT: ke... |
2000 2001 2002 2003 2004 2005 |
* @loginuid: loginuid value * * Returns 0. * * Called (set) from fs/proc/base.c::proc_loginuid_write(). */ |
e1760bd5f userns: Convert t... |
2006 |
int audit_set_loginuid(kuid_t loginuid) |
1da177e4c Linux-2.6.12-rc2 |
2007 |
{ |
0a300be6d audit: remove tas... |
2008 |
struct task_struct *task = current; |
9175c9d2a audit: fix type o... |
2009 2010 |
unsigned int oldsessionid, sessionid = (unsigned int)-1; kuid_t oldloginuid; |
da0a61049 audit: loginuid f... |
2011 |
int rc; |
41757106b [PATCH] make set_... |
2012 |
|
da0a61049 audit: loginuid f... |
2013 2014 2015 2016 2017 2018 |
oldloginuid = audit_get_loginuid(current); oldsessionid = audit_get_sessionid(current); rc = audit_set_loginuid_perm(loginuid); if (rc) goto out; |
633b45454 audit: only allow... |
2019 |
|
81407c84a audit: allow unse... |
2020 2021 |
/* are we setting or clearing? */ if (uid_valid(loginuid)) |
4440e8548 audit: convert al... |
2022 |
sessionid = (unsigned int)atomic_inc_return(&session_id); |
bfef93a5d [PATCH] get rid o... |
2023 |
|
4746ec5b0 [AUDIT] add sessi... |
2024 |
task->sessionid = sessionid; |
bfef93a5d [PATCH] get rid o... |
2025 |
task->loginuid = loginuid; |
da0a61049 audit: loginuid f... |
2026 2027 2028 |
out: audit_log_set_loginuid(oldloginuid, loginuid, oldsessionid, sessionid, rc); return rc; |
1da177e4c Linux-2.6.12-rc2 |
2029 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
2030 |
/** |
20ca73bc7 [PATCH] Audit of ... |
2031 2032 2033 |
* __audit_mq_open - record audit data for a POSIX MQ open * @oflag: open flag * @mode: mode bits |
6b9625599 auditsc: fix kern... |
2034 |
* @attr: queue attributes |
20ca73bc7 [PATCH] Audit of ... |
2035 |
* |
20ca73bc7 [PATCH] Audit of ... |
2036 |
*/ |
df0a42837 switch mq_open() ... |
2037 |
void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr) |
20ca73bc7 [PATCH] Audit of ... |
2038 |
{ |
20ca73bc7 [PATCH] Audit of ... |
2039 |
struct audit_context *context = current->audit_context; |
564f6993f sanitize audit_mq... |
2040 2041 2042 2043 |
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 ... |
2044 |
|
564f6993f sanitize audit_mq... |
2045 2046 |
context->mq_open.oflag = oflag; context->mq_open.mode = mode; |
20ca73bc7 [PATCH] Audit of ... |
2047 |
|
564f6993f sanitize audit_mq... |
2048 |
context->type = AUDIT_MQ_OPEN; |
20ca73bc7 [PATCH] Audit of ... |
2049 2050 2051 |
} /** |
c32c8af43 sanitize AUDIT_MQ... |
2052 |
* __audit_mq_sendrecv - record audit data for a POSIX MQ timed send/receive |
20ca73bc7 [PATCH] Audit of ... |
2053 2054 2055 |
* @mqdes: MQ descriptor * @msg_len: Message length * @msg_prio: Message priority |
c32c8af43 sanitize AUDIT_MQ... |
2056 |
* @abs_timeout: Message timeout in absolute time |
20ca73bc7 [PATCH] Audit of ... |
2057 |
* |
20ca73bc7 [PATCH] Audit of ... |
2058 |
*/ |
c32c8af43 sanitize AUDIT_MQ... |
2059 2060 |
void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout) |
20ca73bc7 [PATCH] Audit of ... |
2061 |
{ |
20ca73bc7 [PATCH] Audit of ... |
2062 |
struct audit_context *context = current->audit_context; |
c32c8af43 sanitize AUDIT_MQ... |
2063 |
struct timespec *p = &context->mq_sendrecv.abs_timeout; |
20ca73bc7 [PATCH] Audit of ... |
2064 |
|
c32c8af43 sanitize AUDIT_MQ... |
2065 2066 2067 2068 |
if (abs_timeout) memcpy(p, abs_timeout, sizeof(struct timespec)); else memset(p, 0, sizeof(struct timespec)); |
20ca73bc7 [PATCH] Audit of ... |
2069 |
|
c32c8af43 sanitize AUDIT_MQ... |
2070 2071 2072 |
context->mq_sendrecv.mqdes = mqdes; context->mq_sendrecv.msg_len = msg_len; context->mq_sendrecv.msg_prio = msg_prio; |
20ca73bc7 [PATCH] Audit of ... |
2073 |
|
c32c8af43 sanitize AUDIT_MQ... |
2074 |
context->type = AUDIT_MQ_SENDRECV; |
20ca73bc7 [PATCH] Audit of ... |
2075 2076 2077 2078 2079 |
} /** * __audit_mq_notify - record audit data for a POSIX MQ notify * @mqdes: MQ descriptor |
6b9625599 auditsc: fix kern... |
2080 |
* @notification: Notification event |
20ca73bc7 [PATCH] Audit of ... |
2081 |
* |
20ca73bc7 [PATCH] Audit of ... |
2082 |
*/ |
20114f71b sanitize audit_mq... |
2083 |
void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification) |
20ca73bc7 [PATCH] Audit of ... |
2084 |
{ |
20ca73bc7 [PATCH] Audit of ... |
2085 |
struct audit_context *context = current->audit_context; |
20114f71b sanitize audit_mq... |
2086 2087 2088 2089 |
if (notification) context->mq_notify.sigev_signo = notification->sigev_signo; else context->mq_notify.sigev_signo = 0; |
20ca73bc7 [PATCH] Audit of ... |
2090 |
|
20114f71b sanitize audit_mq... |
2091 2092 |
context->mq_notify.mqdes = mqdes; context->type = AUDIT_MQ_NOTIFY; |
20ca73bc7 [PATCH] Audit of ... |
2093 2094 2095 2096 2097 2098 2099 |
} /** * __audit_mq_getsetattr - record audit data for a POSIX MQ get/set attribute * @mqdes: MQ descriptor * @mqstat: MQ flags * |
20ca73bc7 [PATCH] Audit of ... |
2100 |
*/ |
7392906ea sanitize audit_mq... |
2101 |
void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat) |
20ca73bc7 [PATCH] Audit of ... |
2102 |
{ |
20ca73bc7 [PATCH] Audit of ... |
2103 |
struct audit_context *context = current->audit_context; |
7392906ea sanitize audit_mq... |
2104 2105 2106 |
context->mq_getsetattr.mqdes = mqdes; context->mq_getsetattr.mqstat = *mqstat; context->type = AUDIT_MQ_GETSETATTR; |
20ca73bc7 [PATCH] Audit of ... |
2107 2108 2109 |
} /** |
073115d6b [PATCH] Rework of... |
2110 2111 2112 |
* audit_ipc_obj - record audit data for ipc object * @ipcp: ipc permissions * |
073115d6b [PATCH] Rework of... |
2113 |
*/ |
a33e67510 sanitize audit_ip... |
2114 |
void __audit_ipc_obj(struct kern_ipc_perm *ipcp) |
073115d6b [PATCH] Rework of... |
2115 |
{ |
073115d6b [PATCH] Rework of... |
2116 |
struct audit_context *context = current->audit_context; |
a33e67510 sanitize audit_ip... |
2117 2118 2119 |
context->ipc.uid = ipcp->uid; context->ipc.gid = ipcp->gid; context->ipc.mode = ipcp->mode; |
e816f370c sanitize audit_ip... |
2120 |
context->ipc.has_perm = 0; |
a33e67510 sanitize audit_ip... |
2121 2122 |
security_ipc_getsecid(ipcp, &context->ipc.osid); context->type = AUDIT_IPC; |
073115d6b [PATCH] Rework of... |
2123 2124 2125 2126 |
} /** * audit_ipc_set_perm - record audit data for new ipc permissions |
b0dd25a82 [PATCH] AUDIT: ke... |
2127 2128 2129 2130 2131 |
* @qbytes: msgq bytes * @uid: msgq user id * @gid: msgq group id * @mode: msgq mode (permissions) * |
e816f370c sanitize audit_ip... |
2132 |
* Called only after audit_ipc_obj(). |
b0dd25a82 [PATCH] AUDIT: ke... |
2133 |
*/ |
2570ebbd1 switch kern_ipc_p... |
2134 |
void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode) |
1da177e4c Linux-2.6.12-rc2 |
2135 |
{ |
1da177e4c Linux-2.6.12-rc2 |
2136 |
struct audit_context *context = current->audit_context; |
e816f370c sanitize audit_ip... |
2137 2138 2139 2140 2141 |
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 |
2142 |
} |
c2f0c7c35 The attached patc... |
2143 |
|
d9cfea91e audit: move audit... |
2144 |
void __audit_bprm(struct linux_binprm *bprm) |
473ae30bc [PATCH] execve ar... |
2145 |
{ |
473ae30bc [PATCH] execve ar... |
2146 |
struct audit_context *context = current->audit_context; |
473ae30bc [PATCH] execve ar... |
2147 |
|
d9cfea91e audit: move audit... |
2148 2149 |
context->type = AUDIT_EXECVE; context->execve.argc = bprm->argc; |
473ae30bc [PATCH] execve ar... |
2150 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
2151 2152 |
/** * audit_socketcall - record audit data for sys_socketcall |
2950fa9d3 kernel: audit: be... |
2153 |
* @nargs: number of args, which should not be more than AUDITSC_ARGS. |
b0dd25a82 [PATCH] AUDIT: ke... |
2154 2155 |
* @args: args array * |
b0dd25a82 [PATCH] AUDIT: ke... |
2156 |
*/ |
2950fa9d3 kernel: audit: be... |
2157 |
int __audit_socketcall(int nargs, unsigned long *args) |
3ec3b2fba AUDIT: Capture sy... |
2158 |
{ |
3ec3b2fba AUDIT: Capture sy... |
2159 |
struct audit_context *context = current->audit_context; |
2950fa9d3 kernel: audit: be... |
2160 2161 |
if (nargs <= 0 || nargs > AUDITSC_ARGS || !args) return -EINVAL; |
f3298dc4f sanitize audit_so... |
2162 2163 2164 |
context->type = AUDIT_SOCKETCALL; context->socketcall.nargs = nargs; memcpy(context->socketcall.args, args, nargs * sizeof(unsigned long)); |
2950fa9d3 kernel: audit: be... |
2165 |
return 0; |
3ec3b2fba AUDIT: Capture sy... |
2166 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
2167 |
/** |
db3495099 [PATCH] AUDIT_FD_... |
2168 2169 2170 2171 |
* __audit_fd_pair - record audit data for pipe and socketpair * @fd1: the first file descriptor * @fd2: the second file descriptor * |
db3495099 [PATCH] AUDIT_FD_... |
2172 |
*/ |
157cf649a sanitize audit_fd... |
2173 |
void __audit_fd_pair(int fd1, int fd2) |
db3495099 [PATCH] AUDIT_FD_... |
2174 2175 |
{ struct audit_context *context = current->audit_context; |
157cf649a sanitize audit_fd... |
2176 2177 |
context->fds[0] = fd1; context->fds[1] = fd2; |
db3495099 [PATCH] AUDIT_FD_... |
2178 2179 2180 |
} /** |
b0dd25a82 [PATCH] AUDIT: ke... |
2181 2182 2183 2184 2185 2186 |
* audit_sockaddr - record audit data for sys_bind, sys_connect, sys_sendto * @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... |
2187 |
int __audit_sockaddr(int len, void *a) |
3ec3b2fba AUDIT: Capture sy... |
2188 |
{ |
3ec3b2fba AUDIT: Capture sy... |
2189 |
struct audit_context *context = current->audit_context; |
4f6b434fe don't reallocate ... |
2190 2191 2192 2193 2194 2195 |
if (!context->sockaddr) { void *p = kmalloc(sizeof(struct sockaddr_storage), GFP_KERNEL); if (!p) return -ENOMEM; context->sockaddr = p; } |
3ec3b2fba AUDIT: Capture sy... |
2196 |
|
4f6b434fe don't reallocate ... |
2197 2198 |
context->sockaddr_len = len; memcpy(context->sockaddr, a, len); |
3ec3b2fba AUDIT: Capture sy... |
2199 2200 |
return 0; } |
a5cb013da [PATCH] auditing ... |
2201 2202 2203 |
void __audit_ptrace(struct task_struct *t) { struct audit_context *context = current->audit_context; |
f1dc4867f audit: anchor all... |
2204 |
context->target_pid = task_pid_nr(t); |
c2a7780ef [AUDIT] collect u... |
2205 |
context->target_auid = audit_get_loginuid(t); |
c69e8d9c0 CRED: Use RCU to ... |
2206 |
context->target_uid = task_uid(t); |
4746ec5b0 [AUDIT] add sessi... |
2207 |
context->target_sessionid = audit_get_sessionid(t); |
2a862b32f Audit: use new LS... |
2208 |
security_task_getsecid(t, &context->target_sid); |
c2a7780ef [AUDIT] collect u... |
2209 |
memcpy(context->target_comm, t->comm, TASK_COMM_LEN); |
a5cb013da [PATCH] auditing ... |
2210 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
2211 |
/** |
b0dd25a82 [PATCH] AUDIT: ke... |
2212 2213 2214 2215 2216 2217 2218 |
* audit_signal_info - record signal info for shutting down audit subsystem * @sig: signal value * @t: task being signaled * * If the audit subsystem is being terminated, record the task (pid) * and uid that is doing that. */ |
e54dc2431 [PATCH] audit sig... |
2219 |
int __audit_signal_info(int sig, struct task_struct *t) |
c2f0c7c35 The attached patc... |
2220 |
{ |
e54dc2431 [PATCH] audit sig... |
2221 2222 2223 |
struct audit_aux_data_pids *axp; struct task_struct *tsk = current; struct audit_context *ctx = tsk->audit_context; |
cca080d9b userns: Convert a... |
2224 |
kuid_t uid = current_uid(), t_uid = task_uid(t); |
e1396065e [PATCH] collect s... |
2225 |
|
175fc4842 fix oops in __aud... |
2226 |
if (audit_pid && t->tgid == audit_pid) { |
ee1d31566 [PATCH] Audit: Co... |
2227 |
if (sig == SIGTERM || sig == SIGHUP || sig == SIGUSR1 || sig == SIGUSR2) { |
f1dc4867f audit: anchor all... |
2228 |
audit_sig_pid = task_pid_nr(tsk); |
e1760bd5f userns: Convert t... |
2229 |
if (uid_valid(tsk->loginuid)) |
bfef93a5d [PATCH] get rid o... |
2230 |
audit_sig_uid = tsk->loginuid; |
175fc4842 fix oops in __aud... |
2231 |
else |
c69e8d9c0 CRED: Use RCU to ... |
2232 |
audit_sig_uid = uid; |
2a862b32f Audit: use new LS... |
2233 |
security_task_getsecid(tsk, &audit_sig_sid); |
175fc4842 fix oops in __aud... |
2234 2235 2236 |
} if (!audit_signals || audit_dummy_context()) return 0; |
c2f0c7c35 The attached patc... |
2237 |
} |
e54dc2431 [PATCH] audit sig... |
2238 |
|
e54dc2431 [PATCH] audit sig... |
2239 2240 2241 |
/* optimize the common case by putting first signal recipient directly * in audit_context */ if (!ctx->target_pid) { |
f1dc4867f audit: anchor all... |
2242 |
ctx->target_pid = task_tgid_nr(t); |
c2a7780ef [AUDIT] collect u... |
2243 |
ctx->target_auid = audit_get_loginuid(t); |
c69e8d9c0 CRED: Use RCU to ... |
2244 |
ctx->target_uid = t_uid; |
4746ec5b0 [AUDIT] add sessi... |
2245 |
ctx->target_sessionid = audit_get_sessionid(t); |
2a862b32f Audit: use new LS... |
2246 |
security_task_getsecid(t, &ctx->target_sid); |
c2a7780ef [AUDIT] collect u... |
2247 |
memcpy(ctx->target_comm, t->comm, TASK_COMM_LEN); |
e54dc2431 [PATCH] audit sig... |
2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 |
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:... |
2261 |
BUG_ON(axp->pid_count >= AUDIT_AUX_PIDS); |
e54dc2431 [PATCH] audit sig... |
2262 |
|
f1dc4867f audit: anchor all... |
2263 |
axp->target_pid[axp->pid_count] = task_tgid_nr(t); |
c2a7780ef [AUDIT] collect u... |
2264 |
axp->target_auid[axp->pid_count] = audit_get_loginuid(t); |
c69e8d9c0 CRED: Use RCU to ... |
2265 |
axp->target_uid[axp->pid_count] = t_uid; |
4746ec5b0 [AUDIT] add sessi... |
2266 |
axp->target_sessionid[axp->pid_count] = audit_get_sessionid(t); |
2a862b32f Audit: use new LS... |
2267 |
security_task_getsecid(t, &axp->target_sid[axp->pid_count]); |
c2a7780ef [AUDIT] collect u... |
2268 |
memcpy(axp->target_comm[axp->pid_count], t->comm, TASK_COMM_LEN); |
e54dc2431 [PATCH] audit sig... |
2269 2270 2271 |
axp->pid_count++; return 0; |
c2f0c7c35 The attached patc... |
2272 |
} |
0a4ff8c25 [PATCH] Abnormal ... |
2273 2274 |
/** |
3fc689e96 Any time fcaps or... |
2275 |
* __audit_log_bprm_fcaps - store information about a loading bprm and relevant fcaps |
d84f4f992 CRED: Inaugurate ... |
2276 2277 2278 |
* @bprm: pointer to the bprm being processed * @new: the proposed new credentials * @old: the old credentials |
3fc689e96 Any time fcaps or... |
2279 2280 2281 2282 |
* * 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... |
2283 2284 |
* -Eric */ |
d84f4f992 CRED: Inaugurate ... |
2285 2286 |
int __audit_log_bprm_fcaps(struct linux_binprm *bprm, const struct cred *new, const struct cred *old) |
3fc689e96 Any time fcaps or... |
2287 2288 2289 2290 2291 2292 2293 2294 |
{ struct audit_aux_data_bprm_fcaps *ax; struct audit_context *context = current->audit_context; struct cpu_vfs_cap_data vcaps; struct dentry *dentry; ax = kmalloc(sizeof(*ax), GFP_KERNEL); if (!ax) |
d84f4f992 CRED: Inaugurate ... |
2295 |
return -ENOMEM; |
3fc689e96 Any time fcaps or... |
2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 |
ax->d.type = AUDIT_BPRM_FCAPS; ax->d.next = context->aux; context->aux = (void *)ax; dentry = dget(bprm->file->f_dentry); get_vfs_caps_from_disk(dentry, &vcaps); dput(dentry); ax->fcap.permitted = vcaps.permitted; ax->fcap.inheritable = vcaps.inheritable; ax->fcap.fE = !!(vcaps.magic_etc & VFS_CAP_FLAGS_EFFECTIVE); ax->fcap_ver = (vcaps.magic_etc & VFS_CAP_REVISION_MASK) >> VFS_CAP_REVISION_SHIFT; |
d84f4f992 CRED: Inaugurate ... |
2309 2310 2311 |
ax->old_pcap.permitted = old->cap_permitted; ax->old_pcap.inheritable = old->cap_inheritable; ax->old_pcap.effective = old->cap_effective; |
3fc689e96 Any time fcaps or... |
2312 |
|
d84f4f992 CRED: Inaugurate ... |
2313 2314 2315 2316 |
ax->new_pcap.permitted = new->cap_permitted; ax->new_pcap.inheritable = new->cap_inheritable; ax->new_pcap.effective = new->cap_effective; return 0; |
3fc689e96 Any time fcaps or... |
2317 2318 2319 |
} /** |
e68b75a02 When the capset s... |
2320 |
* __audit_log_capset - store information about the arguments to the capset syscall |
d84f4f992 CRED: Inaugurate ... |
2321 2322 |
* @new: the new credentials * @old: the old (current) credentials |
e68b75a02 When the capset s... |
2323 2324 2325 2326 |
* * Record the aguments userspace sent to sys_capset for later printing by the * audit system if applicable */ |
ca24a23eb audit: Simplify a... |
2327 |
void __audit_log_capset(const struct cred *new, const struct cred *old) |
e68b75a02 When the capset s... |
2328 |
{ |
e68b75a02 When the capset s... |
2329 |
struct audit_context *context = current->audit_context; |
ca24a23eb audit: Simplify a... |
2330 |
context->capset.pid = task_pid_nr(current); |
57f71a0af sanitize audit_lo... |
2331 2332 2333 2334 |
context->capset.cap.effective = new->cap_effective; context->capset.cap.inheritable = new->cap_effective; context->capset.cap.permitted = new->cap_permitted; context->type = AUDIT_CAPSET; |
e68b75a02 When the capset s... |
2335 |
} |
120a795da audit mmap |
2336 2337 2338 2339 2340 2341 2342 |
void __audit_mmap_fd(int fd, int flags) { struct audit_context *context = current->audit_context; context->mmap.fd = fd; context->mmap.flags = flags; context->type = AUDIT_MMAP; } |
7b9205bd7 audit: create exp... |
2343 |
static void audit_log_task(struct audit_buffer *ab) |
85e7bac33 seccomp: audit ab... |
2344 |
{ |
cca080d9b userns: Convert a... |
2345 2346 |
kuid_t auid, uid; kgid_t gid; |
85e7bac33 seccomp: audit ab... |
2347 |
unsigned int sessionid; |
ff235f51a audit: Added exe ... |
2348 |
struct mm_struct *mm = current->mm; |
85e7bac33 seccomp: audit ab... |
2349 2350 2351 2352 2353 2354 |
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... |
2355 2356 2357 2358 |
from_kuid(&init_user_ns, auid), from_kuid(&init_user_ns, uid), from_kgid(&init_user_ns, gid), sessionid); |
85e7bac33 seccomp: audit ab... |
2359 |
audit_log_task_context(ab); |
f1dc4867f audit: anchor all... |
2360 |
audit_log_format(ab, " pid=%d comm=", task_pid_nr(current)); |
85e7bac33 seccomp: audit ab... |
2361 |
audit_log_untrustedstring(ab, current->comm); |
ff235f51a audit: Added exe ... |
2362 2363 2364 2365 2366 2367 2368 |
if (mm) { down_read(&mm->mmap_sem); if (mm->exe_file) audit_log_d_path(ab, " exe=", &mm->exe_file->f_path); up_read(&mm->mmap_sem); } else audit_log_format(ab, " exe=(null)"); |
7b9205bd7 audit: create exp... |
2369 |
} |
e68b75a02 When the capset s... |
2370 |
/** |
0a4ff8c25 [PATCH] Abnormal ... |
2371 |
* audit_core_dumps - record information about processes that end abnormally |
6d9525b52 kerneldoc fix in ... |
2372 |
* @signr: signal value |
0a4ff8c25 [PATCH] Abnormal ... |
2373 2374 2375 2376 2377 2378 2379 |
* * 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 ... |
2380 2381 2382 2383 2384 2385 2386 2387 |
if (!audit_enabled) return; if (signr == SIGQUIT) /* don't care for those */ return; ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_ANOM_ABEND); |
0644ec0cc audit: catch poss... |
2388 2389 |
if (unlikely(!ab)) return; |
61c0ee879 audit: drop audit... |
2390 2391 |
audit_log_task(ab); audit_log_format(ab, " sig=%ld", signr); |
85e7bac33 seccomp: audit ab... |
2392 2393 |
audit_log_end(ab); } |
0a4ff8c25 [PATCH] Abnormal ... |
2394 |
|
3dc1c1b2d seccomp: remove d... |
2395 |
void __audit_seccomp(unsigned long syscall, long signr, int code) |
85e7bac33 seccomp: audit ab... |
2396 2397 |
{ struct audit_buffer *ab; |
7b9205bd7 audit: create exp... |
2398 2399 2400 2401 2402 |
ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_SECCOMP); if (unlikely(!ab)) return; audit_log_task(ab); audit_log_format(ab, " sig=%ld", signr); |
85e7bac33 seccomp: audit ab... |
2403 |
audit_log_format(ab, " syscall=%ld", syscall); |
3dc1c1b2d seccomp: remove d... |
2404 2405 2406 |
audit_log_format(ab, " compat=%d", is_compat_task()); audit_log_format(ab, " ip=0x%lx", KSTK_EIP(current)); audit_log_format(ab, " code=0x%x", code); |
0a4ff8c25 [PATCH] Abnormal ... |
2407 2408 |
audit_log_end(ab); } |
916d75761 Fix rule eviction... |
2409 2410 2411 2412 2413 2414 2415 2416 |
struct list_head *audit_killed_trees(void) { struct audit_context *ctx = current->audit_context; if (likely(!ctx || !ctx->in_syscall)) return NULL; return &ctx->killed_trees; } |