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kernel/auditsc.c
69.7 KB
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/* auditsc.c -- System-call auditing support |
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* Handles all system-call specific auditing features. * * Copyright 2003-2004 Red Hat Inc., Durham, North Carolina. |
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* Copyright 2005 Hewlett-Packard Development Company, L.P. |
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* Copyright (C) 2005, 2006 IBM Corporation |
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* All Rights Reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * Written by Rickard E. (Rik) Faith <faith@redhat.com> * * Many of the ideas implemented here are from Stephen C. Tweedie, * especially the idea of avoiding a copy by using getname. * * The method for actual interception of syscall entry and exit (not in * this file -- see entry.S) is based on a GPL'd patch written by * okir@suse.de and Copyright 2003 SuSE Linux AG. * |
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* POSIX message queue support added by George Wilson <ltcgcw@us.ibm.com>, * 2006. * |
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* The support of additional filter rules compares (>, <, >=, <=) was * added by Dustin Kirkland <dustin.kirkland@us.ibm.com>, 2005. * |
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* Modified by Amy Griffis <amy.griffis@hp.com> to collect additional * filesystem information. |
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* * Subject and object context labeling support added by <danjones@us.ibm.com> * and <dustin.kirkland@us.ibm.com> for LSPP certification compliance. |
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*/ |
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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#include <linux/init.h> |
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#include <asm/types.h> |
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#include <linux/atomic.h> |
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#include <linux/fs.h> #include <linux/namei.h> |
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#include <linux/mm.h> |
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#include <linux/export.h> |
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#include <linux/slab.h> |
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#include <linux/mount.h> |
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#include <linux/socket.h> |
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#include <linux/mqueue.h> |
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#include <linux/audit.h> #include <linux/personality.h> #include <linux/time.h> |
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#include <linux/netlink.h> |
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#include <linux/compiler.h> |
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#include <asm/unistd.h> |
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#include <linux/security.h> |
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#include <linux/list.h> |
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#include <linux/binfmts.h> |
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#include <linux/highmem.h> |
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#include <linux/syscalls.h> |
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#include <asm/syscall.h> |
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#include <linux/capability.h> |
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#include <linux/fs_struct.h> |
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#include <linux/compat.h> |
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#include <linux/ctype.h> |
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#include <linux/string.h> |
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#include <linux/uaccess.h> |
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#include <linux/fsnotify_backend.h> |
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#include <uapi/linux/limits.h> |
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|
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#include "audit.h" |
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|
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/* flags stating the success for a syscall */ #define AUDITSC_INVALID 0 #define AUDITSC_SUCCESS 1 #define AUDITSC_FAILURE 2 |
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/* no execve audit message should be longer than this (userspace limits), * see the note near the top of audit_log_execve_info() about this value */ |
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#define MAX_EXECVE_AUDIT_LEN 7500 |
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/* max length to print of cmdline/proctitle value during audit */ #define MAX_PROCTITLE_AUDIT_LEN 128 |
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/* number of audit rules */ int audit_n_rules; |
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/* determines whether we collect data for signals sent */ int audit_signals; |
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struct audit_aux_data { struct audit_aux_data *next; int type; }; #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 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) { |
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if ((n->ino != AUDIT_INO_UNSET) && |
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((n->mode & S_IFMT) == mode)) |
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return 1; } |
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|
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return 0; |
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} |
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/* * We keep a linked list of fixed-sized (31 pointer) arrays of audit_chunk *; * ->first_trees points to its beginning, ->trees - to the current end of data. * ->tree_count is the number of free entries in array pointed to by ->trees. * Original condition is (NULL, NULL, 0); as soon as it grows we never revert to NULL, * "empty" becomes (p, p, 31) afterwards. We don't shrink the list (and seriously, * it's going to remain 1-element for almost any setup) until we free context itself. * References in it _are_ dropped - at the same time we free/drop aux stuff. */ |
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static void audit_set_auditable(struct audit_context *ctx) { if (!ctx->prio) { ctx->prio = 1; 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; } |
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static void unroll_tree_refs(struct audit_context *ctx, struct audit_tree_refs *p, int count) { |
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struct audit_tree_refs *q; int n; if (!p) { /* we started with empty chain */ p = ctx->first_trees; count = 31; /* if the very first allocation has failed, nothing to do */ if (!p) return; } n = count; for (q = p; q != ctx->trees; q = q->next, n = 31) { while (n--) { audit_put_chunk(q->c[n]); q->c[n] = NULL; } } while (n-- > ctx->tree_count) { audit_put_chunk(q->c[n]); q->c[n] = NULL; } ctx->trees = p; ctx->tree_count = count; |
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} static void free_tree_refs(struct audit_context *ctx) { struct audit_tree_refs *p, *q; for (p = ctx->first_trees; p; p = q) { q = p->next; kfree(p); } } static int match_tree_refs(struct audit_context *ctx, struct audit_tree *tree) { |
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struct audit_tree_refs *p; int n; if (!tree) return 0; /* full ones */ for (p = ctx->first_trees; p != ctx->trees; p = p->next) { for (n = 0; n < 31; n++) if (audit_tree_match(p->c[n], tree)) return 1; } /* partial */ if (p) { for (n = ctx->tree_count; n < 31; n++) if (audit_tree_match(p->c[n], tree)) return 1; } |
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return 0; } |
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static int audit_compare_uid(kuid_t uid, struct audit_names *name, struct audit_field *f, struct audit_context *ctx) |
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{ struct audit_names *n; |
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int rc; |
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|
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if (name) { |
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rc = audit_uid_comparator(uid, f->op, name->uid); |
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if (rc) return rc; } |
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|
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if (ctx) { list_for_each_entry(n, &ctx->names_list, list) { |
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rc = audit_uid_comparator(uid, f->op, n->uid); if (rc) return rc; } } return 0; } |
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static int audit_compare_gid(kgid_t gid, struct audit_names *name, struct audit_field *f, struct audit_context *ctx) { struct audit_names *n; int rc; 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(audit_get_loginuid(tsk), name, f, ctx); |
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case AUDIT_COMPARE_SUID_TO_OBJ_UID: |
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return audit_compare_uid(cred->suid, name, f, ctx); |
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case AUDIT_COMPARE_SGID_TO_OBJ_GID: |
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return audit_compare_gid(cred->sgid, name, f, ctx); |
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case AUDIT_COMPARE_FSUID_TO_OBJ_UID: |
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return audit_compare_uid(cred->fsuid, name, f, ctx); |
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case AUDIT_COMPARE_FSGID_TO_OBJ_GID: |
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return audit_compare_gid(cred->fsgid, name, f, ctx); |
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/* uid comparisons */ case AUDIT_COMPARE_UID_TO_AUID: |
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return audit_uid_comparator(cred->uid, f->op, audit_get_loginuid(tsk)); |
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case AUDIT_COMPARE_UID_TO_EUID: |
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return audit_uid_comparator(cred->uid, f->op, cred->euid); |
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case AUDIT_COMPARE_UID_TO_SUID: |
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return audit_uid_comparator(cred->uid, f->op, cred->suid); |
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case AUDIT_COMPARE_UID_TO_FSUID: |
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return audit_uid_comparator(cred->uid, f->op, cred->fsuid); |
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/* auid comparisons */ case AUDIT_COMPARE_AUID_TO_EUID: |
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return audit_uid_comparator(audit_get_loginuid(tsk), f->op, cred->euid); |
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case AUDIT_COMPARE_AUID_TO_SUID: |
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return audit_uid_comparator(audit_get_loginuid(tsk), f->op, cred->suid); |
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case AUDIT_COMPARE_AUID_TO_FSUID: |
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return audit_uid_comparator(audit_get_loginuid(tsk), f->op, cred->fsuid); |
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/* euid comparisons */ case AUDIT_COMPARE_EUID_TO_SUID: |
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return audit_uid_comparator(cred->euid, f->op, cred->suid); |
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case AUDIT_COMPARE_EUID_TO_FSUID: |
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return audit_uid_comparator(cred->euid, f->op, cred->fsuid); |
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/* suid comparisons */ case AUDIT_COMPARE_SUID_TO_FSUID: |
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return audit_uid_comparator(cred->suid, f->op, cred->fsuid); |
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/* gid comparisons */ case AUDIT_COMPARE_GID_TO_EGID: |
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return audit_gid_comparator(cred->gid, f->op, cred->egid); |
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case AUDIT_COMPARE_GID_TO_SGID: |
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return audit_gid_comparator(cred->gid, f->op, cred->sgid); |
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case AUDIT_COMPARE_GID_TO_FSGID: |
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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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unsigned int sessionid; |
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|
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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; |
1da177e4c Linux-2.6.12-rc2 |
437 |
|
93315ed6d [PATCH] audit str... |
438 |
switch (f->type) { |
1da177e4c Linux-2.6.12-rc2 |
439 |
case AUDIT_PID: |
fa2bea2f5 audit: consistent... |
440 |
pid = task_tgid_nr(tsk); |
f1dc4867f audit: anchor all... |
441 |
result = audit_comparator(pid, f->op, f->val); |
1da177e4c Linux-2.6.12-rc2 |
442 |
break; |
3c66251e5 [PATCH] add filte... |
443 |
case AUDIT_PPID: |
419c58f11 [PATCH] PPID filt... |
444 445 |
if (ctx) { if (!ctx->ppid) |
c92cdeb45 audit: convert PP... |
446 |
ctx->ppid = task_ppid_nr(tsk); |
3c66251e5 [PATCH] add filte... |
447 |
result = audit_comparator(ctx->ppid, f->op, f->val); |
419c58f11 [PATCH] PPID filt... |
448 |
} |
3c66251e5 [PATCH] add filte... |
449 |
break; |
34d99af52 audit: implement ... |
450 451 |
case AUDIT_EXE: result = audit_exe_compare(tsk, rule->exe); |
23bcc480d audit: allow not ... |
452 453 |
if (f->op == Audit_not_equal) result = !result; |
34d99af52 audit: implement ... |
454 |
break; |
1da177e4c Linux-2.6.12-rc2 |
455 |
case AUDIT_UID: |
ca57ec0f0 audit: Add typesp... |
456 |
result = audit_uid_comparator(cred->uid, f->op, f->uid); |
1da177e4c Linux-2.6.12-rc2 |
457 458 |
break; case AUDIT_EUID: |
ca57ec0f0 audit: Add typesp... |
459 |
result = audit_uid_comparator(cred->euid, f->op, f->uid); |
1da177e4c Linux-2.6.12-rc2 |
460 461 |
break; case AUDIT_SUID: |
ca57ec0f0 audit: Add typesp... |
462 |
result = audit_uid_comparator(cred->suid, f->op, f->uid); |
1da177e4c Linux-2.6.12-rc2 |
463 464 |
break; case AUDIT_FSUID: |
ca57ec0f0 audit: Add typesp... |
465 |
result = audit_uid_comparator(cred->fsuid, f->op, f->uid); |
1da177e4c Linux-2.6.12-rc2 |
466 467 |
break; case AUDIT_GID: |
ca57ec0f0 audit: Add typesp... |
468 |
result = audit_gid_comparator(cred->gid, f->op, f->gid); |
37eebe39c audit: improve GI... |
469 470 |
if (f->op == Audit_equal) { if (!result) |
af85d1772 audit: Fix extend... |
471 |
result = groups_search(cred->group_info, f->gid); |
37eebe39c audit: improve GI... |
472 473 |
} else if (f->op == Audit_not_equal) { if (result) |
af85d1772 audit: Fix extend... |
474 |
result = !groups_search(cred->group_info, f->gid); |
37eebe39c audit: improve GI... |
475 |
} |
1da177e4c Linux-2.6.12-rc2 |
476 477 |
break; case AUDIT_EGID: |
ca57ec0f0 audit: Add typesp... |
478 |
result = audit_gid_comparator(cred->egid, f->op, f->gid); |
37eebe39c audit: improve GI... |
479 480 |
if (f->op == Audit_equal) { if (!result) |
af85d1772 audit: Fix extend... |
481 |
result = groups_search(cred->group_info, f->gid); |
37eebe39c audit: improve GI... |
482 483 |
} else if (f->op == Audit_not_equal) { if (result) |
af85d1772 audit: Fix extend... |
484 |
result = !groups_search(cred->group_info, f->gid); |
37eebe39c audit: improve GI... |
485 |
} |
1da177e4c Linux-2.6.12-rc2 |
486 487 |
break; case AUDIT_SGID: |
ca57ec0f0 audit: Add typesp... |
488 |
result = audit_gid_comparator(cred->sgid, f->op, f->gid); |
1da177e4c Linux-2.6.12-rc2 |
489 490 |
break; case AUDIT_FSGID: |
ca57ec0f0 audit: Add typesp... |
491 |
result = audit_gid_comparator(cred->fsgid, f->op, f->gid); |
1da177e4c Linux-2.6.12-rc2 |
492 |
break; |
8fae47705 audit: add suppor... |
493 |
case AUDIT_SESSIONID: |
5b7138866 audit: Fix wrong ... |
494 |
sessionid = audit_get_sessionid(tsk); |
8fae47705 audit: add suppor... |
495 496 |
result = audit_comparator(sessionid, f->op, f->val); break; |
1da177e4c Linux-2.6.12-rc2 |
497 |
case AUDIT_PERS: |
93315ed6d [PATCH] audit str... |
498 |
result = audit_comparator(tsk->personality, f->op, f->val); |
1da177e4c Linux-2.6.12-rc2 |
499 |
break; |
2fd6f58ba [AUDIT] Don't all... |
500 |
case AUDIT_ARCH: |
9f8dbe9c9 whitespace fixes:... |
501 |
if (ctx) |
93315ed6d [PATCH] audit str... |
502 |
result = audit_comparator(ctx->arch, f->op, f->val); |
2fd6f58ba [AUDIT] Don't all... |
503 |
break; |
1da177e4c Linux-2.6.12-rc2 |
504 505 506 |
case AUDIT_EXIT: if (ctx && ctx->return_valid) |
93315ed6d [PATCH] audit str... |
507 |
result = audit_comparator(ctx->return_code, f->op, f->val); |
1da177e4c Linux-2.6.12-rc2 |
508 509 |
break; case AUDIT_SUCCESS: |
b01f2cc1c [AUDIT] Allow fil... |
510 |
if (ctx && ctx->return_valid) { |
93315ed6d [PATCH] audit str... |
511 512 |
if (f->val) result = audit_comparator(ctx->return_valid, f->op, AUDITSC_SUCCESS); |
b01f2cc1c [AUDIT] Allow fil... |
513 |
else |
93315ed6d [PATCH] audit str... |
514 |
result = audit_comparator(ctx->return_valid, f->op, AUDITSC_FAILURE); |
b01f2cc1c [AUDIT] Allow fil... |
515 |
} |
1da177e4c Linux-2.6.12-rc2 |
516 517 |
break; case AUDIT_DEVMAJOR: |
16c174bd9 audit: check curr... |
518 519 520 521 522 |
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... |
523 |
list_for_each_entry(n, &ctx->names_list, list) { |
16c174bd9 audit: check curr... |
524 525 |
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 |
526 527 528 529 530 531 532 |
++result; break; } } } break; case AUDIT_DEVMINOR: |
16c174bd9 audit: check curr... |
533 534 535 536 537 |
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... |
538 |
list_for_each_entry(n, &ctx->names_list, list) { |
16c174bd9 audit: check curr... |
539 540 |
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 |
541 542 543 544 545 546 547 |
++result; break; } } } break; case AUDIT_INODE: |
f368c07d7 [PATCH] audit: pa... |
548 |
if (name) |
db510fc5c audit: update AUD... |
549 |
result = audit_comparator(name->ino, f->op, f->val); |
f368c07d7 [PATCH] audit: pa... |
550 |
else if (ctx) { |
5195d8e21 audit: dynamicall... |
551 552 |
list_for_each_entry(n, &ctx->names_list, list) { if (audit_comparator(n->ino, f->op, f->val)) { |
1da177e4c Linux-2.6.12-rc2 |
553 554 555 556 557 558 |
++result; break; } } } break; |
efaffd6e4 audit: allow matc... |
559 560 |
case AUDIT_OBJ_UID: if (name) { |
ca57ec0f0 audit: Add typesp... |
561 |
result = audit_uid_comparator(name->uid, f->op, f->uid); |
efaffd6e4 audit: allow matc... |
562 563 |
} else if (ctx) { list_for_each_entry(n, &ctx->names_list, list) { |
ca57ec0f0 audit: Add typesp... |
564 |
if (audit_uid_comparator(n->uid, f->op, f->uid)) { |
efaffd6e4 audit: allow matc... |
565 566 567 568 569 570 |
++result; break; } } } break; |
54d3218b3 audit: allow audi... |
571 572 |
case AUDIT_OBJ_GID: if (name) { |
ca57ec0f0 audit: Add typesp... |
573 |
result = audit_gid_comparator(name->gid, f->op, f->gid); |
54d3218b3 audit: allow audi... |
574 575 |
} else if (ctx) { list_for_each_entry(n, &ctx->names_list, list) { |
ca57ec0f0 audit: Add typesp... |
576 |
if (audit_gid_comparator(n->gid, f->op, f->gid)) { |
54d3218b3 audit: allow audi... |
577 578 579 580 581 582 |
++result; break; } } } break; |
f368c07d7 [PATCH] audit: pa... |
583 |
case AUDIT_WATCH: |
0223fad3c audit: enforce op... |
584 585 586 587 588 589 590 |
if (name) { result = audit_watch_compare(rule->watch, name->ino, name->dev); if (f->op == Audit_not_equal) result = !result; } |
f368c07d7 [PATCH] audit: pa... |
591 |
break; |
74c3cbe33 [PATCH] audit: wa... |
592 |
case AUDIT_DIR: |
0223fad3c audit: enforce op... |
593 |
if (ctx) { |
74c3cbe33 [PATCH] audit: wa... |
594 |
result = match_tree_refs(ctx, rule->tree); |
0223fad3c audit: enforce op... |
595 596 597 |
if (f->op == Audit_not_equal) result = !result; } |
74c3cbe33 [PATCH] audit: wa... |
598 |
break; |
1da177e4c Linux-2.6.12-rc2 |
599 |
case AUDIT_LOGINUID: |
38f805904 audit: normalize ... |
600 601 |
result = audit_uid_comparator(audit_get_loginuid(tsk), f->op, f->uid); |
1da177e4c Linux-2.6.12-rc2 |
602 |
break; |
780a7654c audit: Make testi... |
603 604 605 |
case AUDIT_LOGINUID_SET: result = audit_comparator(audit_loginuid_set(tsk), f->op, f->val); break; |
bf361231c audit: add saddr_... |
606 607 608 609 610 |
case AUDIT_SADDR_FAM: if (ctx->sockaddr) result = audit_comparator(ctx->sockaddr->ss_family, f->op, f->val); break; |
3a6b9f85c [PATCH] audit: re... |
611 612 613 614 615 |
case AUDIT_SUBJ_USER: case AUDIT_SUBJ_ROLE: case AUDIT_SUBJ_TYPE: case AUDIT_SUBJ_SEN: case AUDIT_SUBJ_CLR: |
3dc7e3153 [PATCH] support f... |
616 617 618 619 620 |
/* 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... |
621 |
if (f->lsm_rule) { |
2ad312d20 [PATCH] Audit Fil... |
622 |
if (need_sid) { |
2a862b32f Audit: use new LS... |
623 |
security_task_getsecid(tsk, &sid); |
2ad312d20 [PATCH] Audit Fil... |
624 625 |
need_sid = 0; } |
d7a96f3a1 Audit: internally... |
626 |
result = security_audit_rule_match(sid, f->type, |
90462a5bd audit: remove unu... |
627 628 |
f->op, f->lsm_rule); |
2ad312d20 [PATCH] Audit Fil... |
629 |
} |
3dc7e3153 [PATCH] support f... |
630 |
break; |
6e5a2d1d3 [PATCH] audit: su... |
631 632 633 634 635 636 637 |
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... |
638 |
if (f->lsm_rule) { |
6e5a2d1d3 [PATCH] audit: su... |
639 640 |
/* Find files that match */ if (name) { |
d7a96f3a1 Audit: internally... |
641 |
result = security_audit_rule_match( |
90462a5bd audit: remove unu... |
642 643 644 645 |
name->osid, f->type, f->op, f->lsm_rule); |
6e5a2d1d3 [PATCH] audit: su... |
646 |
} else if (ctx) { |
5195d8e21 audit: dynamicall... |
647 |
list_for_each_entry(n, &ctx->names_list, list) { |
90462a5bd audit: remove unu... |
648 649 650 651 652 |
if (security_audit_rule_match( n->osid, f->type, f->op, f->lsm_rule)) { |
6e5a2d1d3 [PATCH] audit: su... |
653 654 655 656 657 658 |
++result; break; } } } /* Find ipc objects that match */ |
a33e67510 sanitize audit_ip... |
659 660 661 662 |
if (!ctx || ctx->type != AUDIT_IPC) break; if (security_audit_rule_match(ctx->ipc.osid, f->type, f->op, |
90462a5bd audit: remove unu... |
663 |
f->lsm_rule)) |
a33e67510 sanitize audit_ip... |
664 |
++result; |
6e5a2d1d3 [PATCH] audit: su... |
665 666 |
} break; |
1da177e4c Linux-2.6.12-rc2 |
667 668 669 670 671 |
case AUDIT_ARG0: case AUDIT_ARG1: case AUDIT_ARG2: case AUDIT_ARG3: if (ctx) |
93315ed6d [PATCH] audit str... |
672 |
result = audit_comparator(ctx->argv[f->type-AUDIT_ARG0], f->op, f->val); |
1da177e4c Linux-2.6.12-rc2 |
673 |
break; |
5adc8a6ad [PATCH] add rule ... |
674 675 676 677 |
case AUDIT_FILTERKEY: /* ignore this field for filtering */ result = 1; break; |
55669bfa1 [PATCH] audit: AU... |
678 679 |
case AUDIT_PERM: result = audit_match_perm(ctx, f->val); |
0223fad3c audit: enforce op... |
680 681 |
if (f->op == Audit_not_equal) result = !result; |
55669bfa1 [PATCH] audit: AU... |
682 |
break; |
8b67dca94 [PATCH] new predi... |
683 684 |
case AUDIT_FILETYPE: result = audit_match_filetype(ctx, f->val); |
0223fad3c audit: enforce op... |
685 686 |
if (f->op == Audit_not_equal) result = !result; |
8b67dca94 [PATCH] new predi... |
687 |
break; |
02d86a568 audit: allow inte... |
688 689 690 |
case AUDIT_FIELD_COMPARE: result = audit_field_compare(tsk, cred, f, ctx, name); break; |
1da177e4c Linux-2.6.12-rc2 |
691 |
} |
f56298835 audit: acquire cr... |
692 |
if (!result) |
1da177e4c Linux-2.6.12-rc2 |
693 694 |
return 0; } |
0590b9335 fixing audit rule... |
695 696 697 698 699 700 701 702 703 704 |
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 |
705 |
switch (rule->action) { |
66b12abc8 audit: fix some h... |
706 707 708 709 710 711 |
case AUDIT_NEVER: *state = AUDIT_DISABLED; break; case AUDIT_ALWAYS: *state = AUDIT_RECORD_CONTEXT; break; |
1da177e4c Linux-2.6.12-rc2 |
712 713 714 715 716 717 718 719 |
} 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... |
720 |
static enum audit_state audit_filter_task(struct task_struct *tsk, char **key) |
1da177e4c Linux-2.6.12-rc2 |
721 722 723 724 725 |
{ struct audit_entry *e; enum audit_state state; rcu_read_lock(); |
0f45aa18e AUDIT: Allow filt... |
726 |
list_for_each_entry_rcu(e, &audit_filter_list[AUDIT_FILTER_TASK], list) { |
f56298835 audit: acquire cr... |
727 728 |
if (audit_filter_rules(tsk, &e->rule, NULL, NULL, &state, true)) { |
e048e02c8 make sure that fi... |
729 730 |
if (state == AUDIT_RECORD_CONTEXT) *key = kstrdup(e->rule.filterkey, GFP_ATOMIC); |
1da177e4c Linux-2.6.12-rc2 |
731 732 733 734 735 736 737 |
rcu_read_unlock(); return state; } } rcu_read_unlock(); return AUDIT_BUILD_CONTEXT; } |
a3c549311 auditsc: audit_kr... |
738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 |
static int audit_in_mask(const struct audit_krule *rule, unsigned long val) { int word, bit; if (val > 0xffffffff) return false; word = AUDIT_WORD(val); if (word >= AUDIT_BITMASK_SIZE) return false; bit = AUDIT_BIT(val); return rule->mask[word] & bit; } |
1da177e4c Linux-2.6.12-rc2 |
753 754 |
/* 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... |
755 |
* also not high enough that we already know we have to write an audit |
b0dd25a82 [PATCH] AUDIT: ke... |
756 |
* record (i.e., the state is AUDIT_SETUP_CONTEXT or AUDIT_BUILD_CONTEXT). |
1da177e4c Linux-2.6.12-rc2 |
757 758 759 760 761 762 |
*/ 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... |
763 |
enum audit_state state; |
1da177e4c Linux-2.6.12-rc2 |
764 |
|
5b52330bb audit: fix auditd... |
765 |
if (auditd_test_task(tsk)) |
f7056d64a AUDIT: Really exe... |
766 |
return AUDIT_DISABLED; |
1da177e4c Linux-2.6.12-rc2 |
767 |
rcu_read_lock(); |
699c1868a audit: purge unne... |
768 769 770 771 772 773 774 |
list_for_each_entry_rcu(e, list, list) { if (audit_in_mask(&e->rule, ctx->major) && audit_filter_rules(tsk, &e->rule, ctx, NULL, &state, false)) { rcu_read_unlock(); ctx->current_state = state; return state; |
f368c07d7 [PATCH] audit: pa... |
775 776 777 778 779 |
} } rcu_read_unlock(); return AUDIT_BUILD_CONTEXT; } |
5195d8e21 audit: dynamicall... |
780 781 782 783 784 785 786 |
/* * Given an audit_name check the inode hash table to see if they match. * Called holding the rcu read lock to protect the use of audit_inode_hash */ static int audit_filter_inode_name(struct task_struct *tsk, struct audit_names *n, struct audit_context *ctx) { |
5195d8e21 audit: dynamicall... |
787 788 789 790 |
int h = audit_hash_ino((u32)n->ino); struct list_head *list = &audit_inode_hash[h]; struct audit_entry *e; enum audit_state state; |
5195d8e21 audit: dynamicall... |
791 |
list_for_each_entry_rcu(e, list, list) { |
a3c549311 auditsc: audit_kr... |
792 |
if (audit_in_mask(&e->rule, ctx->major) && |
5195d8e21 audit: dynamicall... |
793 794 795 796 797 |
audit_filter_rules(tsk, &e->rule, ctx, n, &state, false)) { ctx->current_state = state; return 1; } } |
5195d8e21 audit: dynamicall... |
798 799 800 801 |
return 0; } /* At syscall exit time, this filter is called if any audit_names have been |
f368c07d7 [PATCH] audit: pa... |
802 |
* collected during syscall processing. We only check rules in sublists at hash |
5195d8e21 audit: dynamicall... |
803 |
* buckets applicable to the inode numbers in audit_names. |
f368c07d7 [PATCH] audit: pa... |
804 805 |
* Regarding audit_state, same rules apply as for audit_filter_syscall(). */ |
0590b9335 fixing audit rule... |
806 |
void audit_filter_inodes(struct task_struct *tsk, struct audit_context *ctx) |
f368c07d7 [PATCH] audit: pa... |
807 |
{ |
5195d8e21 audit: dynamicall... |
808 |
struct audit_names *n; |
f368c07d7 [PATCH] audit: pa... |
809 |
|
5b52330bb audit: fix auditd... |
810 |
if (auditd_test_task(tsk)) |
0590b9335 fixing audit rule... |
811 |
return; |
f368c07d7 [PATCH] audit: pa... |
812 813 |
rcu_read_lock(); |
f368c07d7 [PATCH] audit: pa... |
814 |
|
5195d8e21 audit: dynamicall... |
815 816 817 |
list_for_each_entry(n, &ctx->names_list, list) { if (audit_filter_inode_name(tsk, n, ctx)) break; |
0f45aa18e AUDIT: Allow filt... |
818 819 |
} rcu_read_unlock(); |
0f45aa18e AUDIT: Allow filt... |
820 |
} |
3f1c82502 audit: Audit proc... |
821 822 823 824 825 826 |
static inline void audit_proctitle_free(struct audit_context *context) { kfree(context->proctitle.value); context->proctitle.value = NULL; context->proctitle.len = 0; } |
95e0b46fc audit: fix a meml... |
827 828 829 830 831 832 833 |
static inline void audit_free_module(struct audit_context *context) { if (context->type == AUDIT_KERN_MODULE) { kfree(context->module.name); context->module.name = NULL; } } |
1da177e4c Linux-2.6.12-rc2 |
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 |
|
5195d8e21 audit: dynamicall... |
838 839 |
list_for_each_entry_safe(n, next, &context->names_list, list) { list_del(&n->list); |
55422d0bd audit: replace ge... |
840 841 |
if (n->name) putname(n->name); |
5195d8e21 audit: dynamicall... |
842 843 |
if (n->should_free) kfree(n); |
8c8570fb8 [PATCH] Capture s... |
844 |
} |
1da177e4c Linux-2.6.12-rc2 |
845 |
context->name_count = 0; |
44707fdf5 d_path: Use struc... |
846 847 848 |
path_put(&context->pwd); context->pwd.dentry = NULL; context->pwd.mnt = NULL; |
1da177e4c Linux-2.6.12-rc2 |
849 850 851 852 853 854 855 856 857 858 |
} 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... |
859 860 861 862 |
while ((aux = context->aux_pids)) { context->aux_pids = aux->next; kfree(aux); } |
1da177e4c Linux-2.6.12-rc2 |
863 |
} |
1da177e4c Linux-2.6.12-rc2 |
864 865 866 |
static inline struct audit_context *audit_alloc_context(enum audit_state state) { struct audit_context *context; |
17c6ee707 auditsc: Use kzal... |
867 868 |
context = kzalloc(sizeof(*context), GFP_KERNEL); if (!context) |
1da177e4c Linux-2.6.12-rc2 |
869 |
return NULL; |
e2c5adc88 auditsc: remove a... |
870 871 |
context->state = state; context->prio = state == AUDIT_RECORD_CONTEXT ? ~0ULL : 0; |
916d75761 Fix rule eviction... |
872 |
INIT_LIST_HEAD(&context->killed_trees); |
5195d8e21 audit: dynamicall... |
873 |
INIT_LIST_HEAD(&context->names_list); |
1da177e4c Linux-2.6.12-rc2 |
874 875 |
return context; } |
b0dd25a82 [PATCH] AUDIT: ke... |
876 877 878 879 880 |
/** * 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 |
881 882 |
* 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... |
883 884 |
* needed. */ |
1da177e4c Linux-2.6.12-rc2 |
885 886 887 888 |
int audit_alloc(struct task_struct *tsk) { struct audit_context *context; enum audit_state state; |
e048e02c8 make sure that fi... |
889 |
char *key = NULL; |
1da177e4c Linux-2.6.12-rc2 |
890 |
|
b593d384e [AUDIT] create co... |
891 |
if (likely(!audit_ever_enabled)) |
1da177e4c Linux-2.6.12-rc2 |
892 |
return 0; /* Return if not auditing. */ |
e048e02c8 make sure that fi... |
893 |
state = audit_filter_task(tsk, &key); |
d48d80512 audit_alloc: clea... |
894 895 |
if (state == AUDIT_DISABLED) { clear_tsk_thread_flag(tsk, TIF_SYSCALL_AUDIT); |
1da177e4c Linux-2.6.12-rc2 |
896 |
return 0; |
d48d80512 audit_alloc: clea... |
897 |
} |
1da177e4c Linux-2.6.12-rc2 |
898 899 |
if (!(context = audit_alloc_context(state))) { |
e048e02c8 make sure that fi... |
900 |
kfree(key); |
1da177e4c Linux-2.6.12-rc2 |
901 902 903 |
audit_log_lost("out of memory in audit_alloc"); return -ENOMEM; } |
e048e02c8 make sure that fi... |
904 |
context->filterkey = key; |
1da177e4c Linux-2.6.12-rc2 |
905 |
|
c0b0ae8a8 audit: use inline... |
906 |
audit_set_context(tsk, context); |
1da177e4c Linux-2.6.12-rc2 |
907 908 909 910 911 912 |
set_tsk_thread_flag(tsk, TIF_SYSCALL_AUDIT); return 0; } static inline void audit_free_context(struct audit_context *context) { |
95e0b46fc audit: fix a meml... |
913 |
audit_free_module(context); |
c62d773a3 audit: no nested ... |
914 915 916 917 918 919 |
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... |
920 |
audit_proctitle_free(context); |
c62d773a3 audit: no nested ... |
921 |
kfree(context); |
1da177e4c Linux-2.6.12-rc2 |
922 |
} |
e54dc2431 [PATCH] audit sig... |
923 |
static int audit_log_pid_context(struct audit_context *context, pid_t pid, |
cca080d9b userns: Convert a... |
924 |
kuid_t auid, kuid_t uid, unsigned int sessionid, |
4746ec5b0 [AUDIT] add sessi... |
925 |
u32 sid, char *comm) |
e54dc2431 [PATCH] audit sig... |
926 927 |
{ struct audit_buffer *ab; |
2a862b32f Audit: use new LS... |
928 |
char *ctx = NULL; |
e54dc2431 [PATCH] audit sig... |
929 930 931 932 933 |
u32 len; int rc = 0; ab = audit_log_start(context, GFP_KERNEL, AUDIT_OBJ_PID); if (!ab) |
6246ccab9 [AUDIT] do not pa... |
934 |
return rc; |
e54dc2431 [PATCH] audit sig... |
935 |
|
e1760bd5f userns: Convert t... |
936 937 |
audit_log_format(ab, "opid=%d oauid=%d ouid=%d oses=%d", pid, from_kuid(&init_user_ns, auid), |
cca080d9b userns: Convert a... |
938 |
from_kuid(&init_user_ns, uid), sessionid); |
ad395abec Audit: do not pri... |
939 940 941 942 943 944 945 946 |
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... |
947 |
} |
c2a7780ef [AUDIT] collect u... |
948 949 |
audit_log_format(ab, " ocomm="); audit_log_untrustedstring(ab, comm); |
e54dc2431 [PATCH] audit sig... |
950 |
audit_log_end(ab); |
e54dc2431 [PATCH] audit sig... |
951 952 953 |
return rc; } |
43761473c audit: fix a doub... |
954 955 |
static void audit_log_execve_info(struct audit_context *context, struct audit_buffer **ab) |
bdf4c48af audit: rework exe... |
956 |
{ |
43761473c audit: fix a doub... |
957 958 959 960 |
long len_max; long len_rem; long len_full; long len_buf; |
8443075ea audit: tame initi... |
961 |
long len_abuf = 0; |
43761473c audit: fix a doub... |
962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 |
long len_tmp; bool require_data; bool encode; unsigned int iter; unsigned int arg; char *buf_head; char *buf; const char __user *p = (const char __user *)current->mm->arg_start; /* NOTE: this buffer needs to be large enough to hold all the non-arg * data we put in the audit record for this argument (see the * code below) ... at this point in time 96 is plenty */ char abuf[96]; /* NOTE: we set MAX_EXECVE_AUDIT_LEN to a rather arbitrary limit, the * current value of 7500 is not as important as the fact that it * is less than 8k, a setting of 7500 gives us plenty of wiggle * room if we go over a little bit in the logging below */ WARN_ON_ONCE(MAX_EXECVE_AUDIT_LEN > 7500); len_max = MAX_EXECVE_AUDIT_LEN; /* scratch buffer to hold the userspace args */ buf_head = kmalloc(MAX_EXECVE_AUDIT_LEN + 1, GFP_KERNEL); if (!buf_head) { audit_panic("out of memory for argv string"); return; |
de6bbd1d3 [AUDIT] break lar... |
988 |
} |
43761473c audit: fix a doub... |
989 |
buf = buf_head; |
040b3a2df audit: fix two bu... |
990 |
|
43761473c audit: fix a doub... |
991 |
audit_log_format(*ab, "argc=%d", context->execve.argc); |
040b3a2df audit: fix two bu... |
992 |
|
43761473c audit: fix a doub... |
993 994 995 996 997 998 999 |
len_rem = len_max; len_buf = 0; len_full = 0; require_data = true; encode = false; iter = 0; arg = 0; |
de6bbd1d3 [AUDIT] break lar... |
1000 |
do { |
43761473c audit: fix a doub... |
1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 |
/* NOTE: we don't ever want to trust this value for anything * serious, but the audit record format insists we * provide an argument length for really long arguments, * e.g. > MAX_EXECVE_AUDIT_LEN, so we have no choice but * to use strncpy_from_user() to obtain this value for * recording in the log, although we don't use it * anywhere here to avoid a double-fetch problem */ if (len_full == 0) len_full = strnlen_user(p, MAX_ARG_STRLEN) - 1; /* read more data from userspace */ if (require_data) { /* can we make more room in the buffer? */ if (buf != buf_head) { memmove(buf_head, buf, len_buf); buf = buf_head; } /* fetch as much as we can of the argument */ len_tmp = strncpy_from_user(&buf_head[len_buf], p, len_max - len_buf); if (len_tmp == -EFAULT) { /* unable to copy from userspace */ send_sig(SIGKILL, current, 0); goto out; } else if (len_tmp == (len_max - len_buf)) { /* buffer is not large enough */ require_data = true; /* NOTE: if we are going to span multiple * buffers force the encoding so we stand * a chance at a sane len_full value and * consistent record encoding */ encode = true; len_full = len_full * 2; p += len_tmp; } else { require_data = false; if (!encode) encode = audit_string_contains_control( buf, len_tmp); /* try to use a trusted value for len_full */ if (len_full < len_max) len_full = (encode ? len_tmp * 2 : len_tmp); p += len_tmp + 1; } len_buf += len_tmp; buf_head[len_buf] = '\0'; |
bdf4c48af audit: rework exe... |
1049 |
|
43761473c audit: fix a doub... |
1050 1051 |
/* length of the buffer in the audit record? */ len_abuf = (encode ? len_buf * 2 : len_buf + 2); |
bdf4c48af audit: rework exe... |
1052 |
} |
de6bbd1d3 [AUDIT] break lar... |
1053 |
|
43761473c audit: fix a doub... |
1054 |
/* write as much as we can to the audit log */ |
ea956d8be audit: print empt... |
1055 |
if (len_buf >= 0) { |
43761473c audit: fix a doub... |
1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 |
/* NOTE: some magic numbers here - basically if we * can't fit a reasonable amount of data into the * existing audit buffer, flush it and start with * a new buffer */ if ((sizeof(abuf) + 8) > len_rem) { len_rem = len_max; audit_log_end(*ab); *ab = audit_log_start(context, GFP_KERNEL, AUDIT_EXECVE); if (!*ab) goto out; } |
bdf4c48af audit: rework exe... |
1068 |
|
43761473c audit: fix a doub... |
1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 |
/* create the non-arg portion of the arg record */ len_tmp = 0; if (require_data || (iter > 0) || ((len_abuf + sizeof(abuf)) > len_rem)) { if (iter == 0) { len_tmp += snprintf(&abuf[len_tmp], sizeof(abuf) - len_tmp, " a%d_len=%lu", arg, len_full); } len_tmp += snprintf(&abuf[len_tmp], sizeof(abuf) - len_tmp, " a%d[%d]=", arg, iter++); } else len_tmp += snprintf(&abuf[len_tmp], sizeof(abuf) - len_tmp, " a%d=", arg); WARN_ON(len_tmp >= sizeof(abuf)); abuf[sizeof(abuf) - 1] = '\0'; /* log the arg in the audit record */ audit_log_format(*ab, "%s", abuf); len_rem -= len_tmp; len_tmp = len_buf; if (encode) { if (len_abuf > len_rem) len_tmp = len_rem / 2; /* encoding */ audit_log_n_hex(*ab, buf, len_tmp); len_rem -= len_tmp * 2; len_abuf -= len_tmp * 2; } else { if (len_abuf > len_rem) len_tmp = len_rem - 2; /* quotes */ audit_log_n_string(*ab, buf, len_tmp); len_rem -= len_tmp + 2; /* don't subtract the "2" because we still need * to add quotes to the remaining string */ len_abuf -= len_tmp; } len_buf -= len_tmp; buf += len_tmp; } |
bdf4c48af audit: rework exe... |
1111 |
|
43761473c audit: fix a doub... |
1112 1113 1114 1115 1116 1117 1118 1119 1120 |
/* ready to move to the next argument? */ if ((len_buf == 0) && !require_data) { arg++; iter = 0; len_full = 0; require_data = true; encode = false; } } while (arg < context->execve.argc); |
de6bbd1d3 [AUDIT] break lar... |
1121 |
|
43761473c audit: fix a doub... |
1122 |
/* NOTE: the caller handles the final audit_log_end() call */ |
de6bbd1d3 [AUDIT] break lar... |
1123 |
|
43761473c audit: fix a doub... |
1124 1125 |
out: kfree(buf_head); |
bdf4c48af audit: rework exe... |
1126 |
} |
2efa48fec audit: Make audit... |
1127 1128 |
static void audit_log_cap(struct audit_buffer *ab, char *prefix, kernel_cap_t *cap) |
5f3d544f1 audit: remove aud... |
1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 |
{ int i; if (cap_isclear(*cap)) { audit_log_format(ab, " %s=0", prefix); return; } audit_log_format(ab, " %s=", prefix); CAP_FOR_EACH_U32(i) audit_log_format(ab, "%08x", cap->cap[CAP_LAST_U32 - i]); } static void audit_log_fcaps(struct audit_buffer *ab, struct audit_names *name) { if (name->fcap_ver == -1) { audit_log_format(ab, " cap_fe=? cap_fver=? cap_fp=? cap_fi=?"); return; } audit_log_cap(ab, "cap_fp", &name->fcap.permitted); audit_log_cap(ab, "cap_fi", &name->fcap.inheritable); audit_log_format(ab, " cap_fe=%d cap_fver=%x cap_frootid=%d", name->fcap.fE, name->fcap_ver, from_kuid(&init_user_ns, name->fcap.rootid)); } |
a33e67510 sanitize audit_ip... |
1153 |
static void show_special(struct audit_context *context, int *call_panic) |
f3298dc4f sanitize audit_so... |
1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 |
{ 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... |
1170 1171 |
case AUDIT_IPC: { u32 osid = context->ipc.osid; |
2570ebbd1 switch kern_ipc_p... |
1172 |
audit_log_format(ab, "ouid=%u ogid=%u mode=%#ho", |
cca080d9b userns: Convert a... |
1173 1174 1175 |
from_kuid(&init_user_ns, context->ipc.uid), from_kgid(&init_user_ns, context->ipc.gid), context->ipc.mode); |
a33e67510 sanitize audit_ip... |
1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 |
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... |
1187 1188 1189 1190 |
if (context->ipc.has_perm) { audit_log_end(ab); ab = audit_log_start(context, GFP_KERNEL, AUDIT_IPC_SET_PERM); |
0644ec0cc audit: catch poss... |
1191 1192 |
if (unlikely(!ab)) return; |
e816f370c sanitize audit_ip... |
1193 |
audit_log_format(ab, |
2570ebbd1 switch kern_ipc_p... |
1194 |
"qbytes=%lx ouid=%u ogid=%u mode=%#ho", |
e816f370c sanitize audit_ip... |
1195 1196 1197 1198 |
context->ipc.qbytes, context->ipc.perm_uid, context->ipc.perm_gid, context->ipc.perm_mode); |
e816f370c sanitize audit_ip... |
1199 |
} |
a33e67510 sanitize audit_ip... |
1200 |
break; } |
fe8e52b9b audit: remove unn... |
1201 |
case AUDIT_MQ_OPEN: |
564f6993f sanitize audit_mq... |
1202 |
audit_log_format(ab, |
df0a42837 switch mq_open() ... |
1203 |
"oflag=0x%x mode=%#ho mq_flags=0x%lx mq_maxmsg=%ld " |
564f6993f sanitize audit_mq... |
1204 1205 1206 1207 1208 1209 |
"mq_msgsize=%ld mq_curmsgs=%ld", context->mq_open.oflag, context->mq_open.mode, context->mq_open.attr.mq_flags, context->mq_open.attr.mq_maxmsg, context->mq_open.attr.mq_msgsize, context->mq_open.attr.mq_curmsgs); |
fe8e52b9b audit: remove unn... |
1210 1211 |
break; case AUDIT_MQ_SENDRECV: |
c32c8af43 sanitize AUDIT_MQ... |
1212 1213 |
audit_log_format(ab, "mqdes=%d msg_len=%zd msg_prio=%u " |
b90477263 ipc: mqueue: Repl... |
1214 |
"abs_timeout_sec=%lld abs_timeout_nsec=%ld", |
c32c8af43 sanitize AUDIT_MQ... |
1215 1216 1217 |
context->mq_sendrecv.mqdes, context->mq_sendrecv.msg_len, context->mq_sendrecv.msg_prio, |
b90477263 ipc: mqueue: Repl... |
1218 |
(long long) context->mq_sendrecv.abs_timeout.tv_sec, |
c32c8af43 sanitize AUDIT_MQ... |
1219 |
context->mq_sendrecv.abs_timeout.tv_nsec); |
fe8e52b9b audit: remove unn... |
1220 1221 |
break; case AUDIT_MQ_NOTIFY: |
20114f71b sanitize audit_mq... |
1222 1223 1224 |
audit_log_format(ab, "mqdes=%d sigev_signo=%d", context->mq_notify.mqdes, context->mq_notify.sigev_signo); |
fe8e52b9b audit: remove unn... |
1225 |
break; |
7392906ea sanitize audit_mq... |
1226 1227 1228 1229 1230 1231 1232 1233 1234 |
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; } |
fe8e52b9b audit: remove unn... |
1235 |
case AUDIT_CAPSET: |
57f71a0af sanitize audit_lo... |
1236 1237 1238 1239 |
audit_log_format(ab, "pid=%d", context->capset.pid); audit_log_cap(ab, "cap_pi", &context->capset.cap.inheritable); audit_log_cap(ab, "cap_pp", &context->capset.cap.permitted); audit_log_cap(ab, "cap_pe", &context->capset.cap.effective); |
7786f6b6d audit: add ambien... |
1240 |
audit_log_cap(ab, "cap_pa", &context->capset.cap.ambient); |
fe8e52b9b audit: remove unn... |
1241 1242 |
break; case AUDIT_MMAP: |
120a795da audit mmap |
1243 1244 |
audit_log_format(ab, "fd=%d flags=0x%x", context->mmap.fd, context->mmap.flags); |
fe8e52b9b audit: remove unn... |
1245 1246 |
break; case AUDIT_EXECVE: |
d9cfea91e audit: move audit... |
1247 |
audit_log_execve_info(context, &ab); |
fe8e52b9b audit: remove unn... |
1248 |
break; |
ca86cad73 audit: log module... |
1249 1250 |
case AUDIT_KERN_MODULE: audit_log_format(ab, "name="); |
b305f7ed0 audit: fix potent... |
1251 1252 |
if (context->module.name) { audit_log_untrustedstring(ab, context->module.name); |
b305f7ed0 audit: fix potent... |
1253 1254 |
} else audit_log_format(ab, "(null)"); |
ca86cad73 audit: log module... |
1255 |
break; |
f3298dc4f sanitize audit_so... |
1256 1257 1258 |
} audit_log_end(ab); } |
3f1c82502 audit: Audit proc... |
1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 |
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; } |
5f3d544f1 audit: remove aud... |
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 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 |
/* * audit_log_name - produce AUDIT_PATH record from struct audit_names * @context: audit_context for the task * @n: audit_names structure with reportable details * @path: optional path to report instead of audit_names->name * @record_num: record number to report when handling a list of names * @call_panic: optional pointer to int that will be updated if secid fails */ static void audit_log_name(struct audit_context *context, struct audit_names *n, const struct path *path, int record_num, int *call_panic) { struct audit_buffer *ab; ab = audit_log_start(context, GFP_KERNEL, AUDIT_PATH); if (!ab) return; audit_log_format(ab, "item=%d", record_num); if (path) audit_log_d_path(ab, " name=", path); else if (n->name) { switch (n->name_len) { case AUDIT_NAME_FULL: /* log the full path */ audit_log_format(ab, " name="); audit_log_untrustedstring(ab, n->name->name); break; case 0: /* name was specified as a relative path and the * directory component is the cwd */ audit_log_d_path(ab, " name=", &context->pwd); break; default: /* log the name's directory component */ audit_log_format(ab, " name="); audit_log_n_untrustedstring(ab, n->name->name, n->name_len); } } else audit_log_format(ab, " name=(null)"); if (n->ino != AUDIT_INO_UNSET) audit_log_format(ab, " inode=%lu dev=%02x:%02x mode=%#ho ouid=%u ogid=%u rdev=%02x:%02x", n->ino, MAJOR(n->dev), MINOR(n->dev), n->mode, from_kuid(&init_user_ns, n->uid), from_kgid(&init_user_ns, n->gid), MAJOR(n->rdev), MINOR(n->rdev)); if (n->osid != 0) { char *ctx = NULL; u32 len; if (security_secid_to_secctx( n->osid, &ctx, &len)) { audit_log_format(ab, " osid=%u", n->osid); if (call_panic) *call_panic = 2; } else { audit_log_format(ab, " obj=%s", ctx); security_release_secctx(ctx, len); } } /* log the audit_names record type */ switch (n->type) { case AUDIT_TYPE_NORMAL: audit_log_format(ab, " nametype=NORMAL"); break; case AUDIT_TYPE_PARENT: audit_log_format(ab, " nametype=PARENT"); break; case AUDIT_TYPE_CHILD_DELETE: audit_log_format(ab, " nametype=DELETE"); break; case AUDIT_TYPE_CHILD_CREATE: audit_log_format(ab, " nametype=CREATE"); break; default: audit_log_format(ab, " nametype=UNKNOWN"); break; } audit_log_fcaps(ab, n); audit_log_end(ab); } |
2a1fe215e audit: use curren... |
1360 |
static void audit_log_proctitle(void) |
3f1c82502 audit: Audit proc... |
1361 1362 1363 1364 1365 |
{ int res; char *buf; char *msg = "(null)"; int len = strlen(msg); |
2a1fe215e audit: use curren... |
1366 |
struct audit_context *context = audit_context(); |
3f1c82502 audit: Audit proc... |
1367 |
struct audit_buffer *ab; |
2a1fe215e audit: use curren... |
1368 1369 |
if (!context || context->dummy) return; |
3f1c82502 audit: Audit proc... |
1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 |
ab = audit_log_start(context, GFP_KERNEL, AUDIT_PROCTITLE); if (!ab) return; /* audit_panic or being filtered */ audit_log_format(ab, "proctitle="); /* Not cached */ if (!context->proctitle.value) { buf = kmalloc(MAX_PROCTITLE_AUDIT_LEN, GFP_KERNEL); if (!buf) goto out; /* Historically called this from procfs naming */ |
2a1fe215e audit: use curren... |
1382 |
res = get_cmdline(current, buf, MAX_PROCTITLE_AUDIT_LEN); |
3f1c82502 audit: Audit proc... |
1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 |
if (res == 0) { kfree(buf); goto out; } res = audit_proctitle_rtrim(buf, res); if (res == 0) { kfree(buf); goto out; } context->proctitle.value = buf; context->proctitle.len = res; } msg = context->proctitle.value; len = context->proctitle.len; out: audit_log_n_untrustedstring(ab, msg, len); audit_log_end(ab); } |
2a1fe215e audit: use curren... |
1401 |
static void audit_log_exit(void) |
1da177e4c Linux-2.6.12-rc2 |
1402 |
{ |
9c7aa6aa7 [PATCH] change ls... |
1403 |
int i, call_panic = 0; |
2a1fe215e audit: use curren... |
1404 |
struct audit_context *context = audit_context(); |
1da177e4c Linux-2.6.12-rc2 |
1405 |
struct audit_buffer *ab; |
7551ced33 AUDIT: Defer free... |
1406 |
struct audit_aux_data *aux; |
5195d8e21 audit: dynamicall... |
1407 |
struct audit_names *n; |
1da177e4c Linux-2.6.12-rc2 |
1408 |
|
2a1fe215e audit: use curren... |
1409 |
context->personality = current->personality; |
e495149b1 [PATCH] drop gfp_... |
1410 1411 |
ab = audit_log_start(context, GFP_KERNEL, AUDIT_SYSCALL); |
1da177e4c Linux-2.6.12-rc2 |
1412 1413 |
if (!ab) return; /* audit_panic has been called */ |
bccf6ae08 AUDIT: Unify auid... |
1414 1415 |
audit_log_format(ab, "arch=%x syscall=%d", context->arch, context->major); |
1da177e4c Linux-2.6.12-rc2 |
1416 1417 1418 |
if (context->personality != PER_LINUX) audit_log_format(ab, " per=%lx", context->personality); if (context->return_valid) |
9f8dbe9c9 whitespace fixes:... |
1419 |
audit_log_format(ab, " success=%s exit=%ld", |
2fd6f58ba [AUDIT] Don't all... |
1420 1421 |
(context->return_valid==AUDITSC_SUCCESS)?"yes":"no", context->return_code); |
eb84a20e9 [PATCH] audit/acc... |
1422 |
|
1da177e4c Linux-2.6.12-rc2 |
1423 |
audit_log_format(ab, |
e23eb920b audit: export aud... |
1424 1425 1426 1427 1428 1429 |
" 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... |
1430 |
|
2a1fe215e audit: use curren... |
1431 |
audit_log_task_info(ab); |
9d9609851 Audit: clean up a... |
1432 |
audit_log_key(ab, context->filterkey); |
1da177e4c Linux-2.6.12-rc2 |
1433 |
audit_log_end(ab); |
1da177e4c Linux-2.6.12-rc2 |
1434 |
|
7551ced33 AUDIT: Defer free... |
1435 |
for (aux = context->aux; aux; aux = aux->next) { |
c04049939 AUDIT: Add messag... |
1436 |
|
e495149b1 [PATCH] drop gfp_... |
1437 |
ab = audit_log_start(context, GFP_KERNEL, aux->type); |
1da177e4c Linux-2.6.12-rc2 |
1438 1439 |
if (!ab) continue; /* audit_panic has been called */ |
1da177e4c Linux-2.6.12-rc2 |
1440 |
switch (aux->type) { |
20ca73bc7 [PATCH] Audit of ... |
1441 |
|
3fc689e96 Any time fcaps or... |
1442 1443 1444 1445 1446 1447 1448 1449 1450 |
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); |
7786f6b6d audit: add ambien... |
1451 1452 1453 1454 1455 |
audit_log_cap(ab, "old_pa", &axs->old_pcap.ambient); audit_log_cap(ab, "pp", &axs->new_pcap.permitted); audit_log_cap(ab, "pi", &axs->new_pcap.inheritable); audit_log_cap(ab, "pe", &axs->new_pcap.effective); audit_log_cap(ab, "pa", &axs->new_pcap.ambient); |
2fec30e24 audit: add suppor... |
1456 1457 1458 |
audit_log_format(ab, " frootid=%d", from_kuid(&init_user_ns, axs->fcap.rootid)); |
3fc689e96 Any time fcaps or... |
1459 |
break; } |
1da177e4c Linux-2.6.12-rc2 |
1460 1461 |
} audit_log_end(ab); |
1da177e4c Linux-2.6.12-rc2 |
1462 |
} |
f3298dc4f sanitize audit_so... |
1463 |
if (context->type) |
a33e67510 sanitize audit_ip... |
1464 |
show_special(context, &call_panic); |
f3298dc4f sanitize audit_so... |
1465 |
|
157cf649a sanitize audit_fd... |
1466 1467 1468 1469 1470 1471 1472 1473 |
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 ... |
1474 1475 1476 1477 1478 1479 1480 1481 1482 |
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... |
1483 1484 |
for (aux = context->aux_pids; aux; aux = aux->next) { struct audit_aux_data_pids *axs = (void *)aux; |
e54dc2431 [PATCH] audit sig... |
1485 1486 1487 |
for (i = 0; i < axs->pid_count; i++) if (audit_log_pid_context(context, axs->target_pid[i], |
c2a7780ef [AUDIT] collect u... |
1488 1489 |
axs->target_auid[i], axs->target_uid[i], |
4746ec5b0 [AUDIT] add sessi... |
1490 |
axs->target_sessionid[i], |
c2a7780ef [AUDIT] collect u... |
1491 1492 |
axs->target_sid[i], axs->target_comm[i])) |
e54dc2431 [PATCH] audit sig... |
1493 |
call_panic = 1; |
a5cb013da [PATCH] auditing ... |
1494 |
} |
e54dc2431 [PATCH] audit sig... |
1495 1496 |
if (context->target_pid && audit_log_pid_context(context, context->target_pid, |
c2a7780ef [AUDIT] collect u... |
1497 |
context->target_auid, context->target_uid, |
4746ec5b0 [AUDIT] add sessi... |
1498 |
context->target_sessionid, |
c2a7780ef [AUDIT] collect u... |
1499 |
context->target_sid, context->target_comm)) |
e54dc2431 [PATCH] audit sig... |
1500 |
call_panic = 1; |
44707fdf5 d_path: Use struc... |
1501 |
if (context->pwd.dentry && context->pwd.mnt) { |
e495149b1 [PATCH] drop gfp_... |
1502 |
ab = audit_log_start(context, GFP_KERNEL, AUDIT_CWD); |
8f37d47c9 AUDIT: Record wor... |
1503 |
if (ab) { |
0b7a0fdb2 audit: fix whites... |
1504 |
audit_log_d_path(ab, "cwd=", &context->pwd); |
8f37d47c9 AUDIT: Record wor... |
1505 1506 1507 |
audit_log_end(ab); } } |
73241ccca [PATCH] Collect m... |
1508 |
|
5195d8e21 audit: dynamicall... |
1509 |
i = 0; |
79f6530cb audit: fix mq_ope... |
1510 1511 1512 |
list_for_each_entry(n, &context->names_list, list) { if (n->hidden) continue; |
b24a30a73 audit: fix event ... |
1513 |
audit_log_name(context, n, NULL, i++, &call_panic); |
79f6530cb audit: fix mq_ope... |
1514 |
} |
c0641f28d [AUDIT] Add End o... |
1515 |
|
2a1fe215e audit: use curren... |
1516 |
audit_log_proctitle(); |
3f1c82502 audit: Audit proc... |
1517 |
|
c0641f28d [AUDIT] Add End o... |
1518 1519 1520 1521 |
/* 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... |
1522 1523 |
if (call_panic) audit_panic("error converting sid to string"); |
1da177e4c Linux-2.6.12-rc2 |
1524 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
1525 |
/** |
196a50855 audit: update the... |
1526 |
* __audit_free - free a per-task audit context |
b0dd25a82 [PATCH] AUDIT: ke... |
1527 1528 |
* @tsk: task whose audit context block to free * |
fa84cb935 [PATCH] move call... |
1529 |
* Called from copy_process and do_exit |
b0dd25a82 [PATCH] AUDIT: ke... |
1530 |
*/ |
a4ff8dba7 audit: inline aud... |
1531 |
void __audit_free(struct task_struct *tsk) |
1da177e4c Linux-2.6.12-rc2 |
1532 |
{ |
2a1fe215e audit: use curren... |
1533 |
struct audit_context *context = tsk->audit_context; |
1da177e4c Linux-2.6.12-rc2 |
1534 |
|
56179a6ec audit: drop some ... |
1535 |
if (!context) |
1da177e4c Linux-2.6.12-rc2 |
1536 |
return; |
9e36a5d49 audit: hand taken... |
1537 1538 |
if (!list_empty(&context->killed_trees)) audit_kill_trees(context); |
2a1fe215e audit: use curren... |
1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 |
/* We are called either by do_exit() or the fork() error handling code; * in the former case tsk == current and in the latter tsk is a * random task_struct that doesn't doesn't have any meaningful data we * need to log via audit_log_exit(). */ if (tsk == current && !context->dummy && context->in_syscall) { context->return_valid = 0; context->return_code = 0; audit_filter_syscall(tsk, context, &audit_filter_list[AUDIT_FILTER_EXIT]); audit_filter_inodes(tsk, context); if (context->current_state == AUDIT_RECORD_CONTEXT) audit_log_exit(); } |
2a1fe215e audit: use curren... |
1554 |
audit_set_context(tsk, NULL); |
1da177e4c Linux-2.6.12-rc2 |
1555 1556 |
audit_free_context(context); } |
b0dd25a82 [PATCH] AUDIT: ke... |
1557 |
/** |
196a50855 audit: update the... |
1558 |
* __audit_syscall_entry - fill in an audit record at syscall entry |
b0dd25a82 [PATCH] AUDIT: ke... |
1559 1560 1561 1562 1563 1564 1565 |
* @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 |
1566 1567 1568 1569 1570 |
* 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... |
1571 1572 |
* be written). */ |
b4f0d3755 audit: x86: drop ... |
1573 1574 |
void __audit_syscall_entry(int major, unsigned long a1, unsigned long a2, unsigned long a3, unsigned long a4) |
1da177e4c Linux-2.6.12-rc2 |
1575 |
{ |
cdfb6b341 audit: use inline... |
1576 |
struct audit_context *context = audit_context(); |
1da177e4c Linux-2.6.12-rc2 |
1577 |
enum audit_state state; |
94d14e3e7 audit: bail befor... |
1578 |
if (!audit_enabled || !context) |
86a1c34a9 x86_64 syscall au... |
1579 |
return; |
1da177e4c Linux-2.6.12-rc2 |
1580 |
|
1da177e4c Linux-2.6.12-rc2 |
1581 |
BUG_ON(context->in_syscall || context->name_count); |
1da177e4c Linux-2.6.12-rc2 |
1582 |
state = context->state; |
5260ecc2e audit: deprecate ... |
1583 1584 |
if (state == AUDIT_DISABLED) return; |
d51374adf [PATCH] mark cont... |
1585 |
context->dummy = !audit_n_rules; |
0590b9335 fixing audit rule... |
1586 1587 |
if (!context->dummy && state == AUDIT_BUILD_CONTEXT) { context->prio = 0; |
cdfb6b341 audit: use inline... |
1588 |
if (auditd_test_task(current)) |
5260ecc2e audit: deprecate ... |
1589 |
return; |
0590b9335 fixing audit rule... |
1590 |
} |
1da177e4c Linux-2.6.12-rc2 |
1591 |
|
16add4116 syscall_get_arch:... |
1592 |
context->arch = syscall_get_arch(current); |
5260ecc2e audit: deprecate ... |
1593 1594 1595 1596 1597 |
context->major = major; context->argv[0] = a1; context->argv[1] = a2; context->argv[2] = a3; context->argv[3] = a4; |
ce625a801 AUDIT: Reduce con... |
1598 |
context->serial = 0; |
1da177e4c Linux-2.6.12-rc2 |
1599 |
context->in_syscall = 1; |
0590b9335 fixing audit rule... |
1600 |
context->current_state = state; |
419c58f11 [PATCH] PPID filt... |
1601 |
context->ppid = 0; |
290e44b7d audit: use ktime_... |
1602 |
ktime_get_coarse_real_ts64(&context->ctime); |
1da177e4c Linux-2.6.12-rc2 |
1603 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
1604 |
/** |
196a50855 audit: update the... |
1605 |
* __audit_syscall_exit - deallocate audit context after a system call |
42ae610c1 kernel-doc: fix n... |
1606 1607 |
* @success: success value of the syscall * @return_code: return value of the syscall |
b0dd25a82 [PATCH] AUDIT: ke... |
1608 1609 |
* * Tear down after system call. If the audit context has been marked as |
1da177e4c Linux-2.6.12-rc2 |
1610 |
* auditable (either because of the AUDIT_RECORD_CONTEXT state from |
42ae610c1 kernel-doc: fix n... |
1611 |
* filtering, or because some other part of the kernel wrote an audit |
1da177e4c Linux-2.6.12-rc2 |
1612 |
* message), then write out the syscall information. In call cases, |
b0dd25a82 [PATCH] AUDIT: ke... |
1613 1614 |
* free the names stored from getname(). */ |
d7e7528bc Audit: push audit... |
1615 |
void __audit_syscall_exit(int success, long return_code) |
1da177e4c Linux-2.6.12-rc2 |
1616 1617 |
{ struct audit_context *context; |
2a1fe215e audit: use curren... |
1618 |
context = audit_context(); |
56179a6ec audit: drop some ... |
1619 |
if (!context) |
97e94c453 [PATCH] no need t... |
1620 |
return; |
1da177e4c Linux-2.6.12-rc2 |
1621 |
|
9e36a5d49 audit: hand taken... |
1622 1623 |
if (!list_empty(&context->killed_trees)) audit_kill_trees(context); |
2a1fe215e audit: use curren... |
1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 |
if (!context->dummy && context->in_syscall) { if (success) context->return_valid = AUDITSC_SUCCESS; else context->return_valid = AUDITSC_FAILURE; /* * we need to fix up the return code in the audit logs if the * actual return codes are later going to be fixed up by the * arch specific signal handlers * * This is actually a test for: * (rc == ERESTARTSYS ) || (rc == ERESTARTNOINTR) || * (rc == ERESTARTNOHAND) || (rc == ERESTART_RESTARTBLOCK) * * but is faster than a bunch of || */ if (unlikely(return_code <= -ERESTARTSYS) && (return_code >= -ERESTART_RESTARTBLOCK) && (return_code != -ENOIOCTLCMD)) context->return_code = -EINTR; else context->return_code = return_code; audit_filter_syscall(current, context, &audit_filter_list[AUDIT_FILTER_EXIT]); audit_filter_inodes(current, context); if (context->current_state == AUDIT_RECORD_CONTEXT) audit_log_exit(); } |
1da177e4c Linux-2.6.12-rc2 |
1654 1655 |
context->in_syscall = 0; |
0590b9335 fixing audit rule... |
1656 |
context->prio = context->state == AUDIT_RECORD_CONTEXT ? ~0ULL : 0; |
2fd6f58ba [AUDIT] Don't all... |
1657 |
|
95e0b46fc audit: fix a meml... |
1658 |
audit_free_module(context); |
c62d773a3 audit: no nested ... |
1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 |
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 |
1672 |
} |
1da177e4c Linux-2.6.12-rc2 |
1673 |
} |
74c3cbe33 [PATCH] audit: wa... |
1674 1675 |
static inline void handle_one(const struct inode *inode) { |
74c3cbe33 [PATCH] audit: wa... |
1676 1677 1678 1679 |
struct audit_context *context; struct audit_tree_refs *p; struct audit_chunk *chunk; int count; |
08991e83b fsnotify: Free fs... |
1680 |
if (likely(!inode->i_fsnotify_marks)) |
74c3cbe33 [PATCH] audit: wa... |
1681 |
return; |
cdfb6b341 audit: use inline... |
1682 |
context = audit_context(); |
74c3cbe33 [PATCH] audit: wa... |
1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 |
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... |
1693 1694 |
pr_warn("out of memory, audit has lost a tree reference "); |
74c3cbe33 [PATCH] audit: wa... |
1695 1696 1697 1698 1699 1700 |
audit_set_auditable(context); audit_put_chunk(chunk); unroll_tree_refs(context, p, count); return; } put_tree_ref(context, chunk); |
74c3cbe33 [PATCH] audit: wa... |
1701 1702 1703 1704 |
} static void handle_path(const struct dentry *dentry) { |
74c3cbe33 [PATCH] audit: wa... |
1705 1706 1707 1708 1709 1710 |
struct audit_context *context; struct audit_tree_refs *p; const struct dentry *d, *parent; struct audit_chunk *drop; unsigned long seq; int count; |
cdfb6b341 audit: use inline... |
1711 |
context = audit_context(); |
74c3cbe33 [PATCH] audit: wa... |
1712 1713 1714 1715 1716 1717 1718 1719 |
p = context->trees; count = context->tree_count; retry: drop = NULL; d = dentry; rcu_read_lock(); seq = read_seqbegin(&rename_lock); for(;;) { |
3b362157b VFS: audit: d_bac... |
1720 |
struct inode *inode = d_backing_inode(d); |
08991e83b fsnotify: Free fs... |
1721 |
if (inode && unlikely(inode->i_fsnotify_marks)) { |
74c3cbe33 [PATCH] audit: wa... |
1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 |
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... |
1750 1751 |
pr_warn("out of memory, audit has lost a tree reference "); |
74c3cbe33 [PATCH] audit: wa... |
1752 1753 1754 1755 1756 |
unroll_tree_refs(context, p, count); audit_set_auditable(context); return; } rcu_read_unlock(); |
74c3cbe33 [PATCH] audit: wa... |
1757 |
} |
78e2e802a audit: add a new ... |
1758 1759 |
static struct audit_names *audit_alloc_name(struct audit_context *context, unsigned char type) |
5195d8e21 audit: dynamicall... |
1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 |
{ struct audit_names *aname; if (context->name_count < AUDIT_NAMES) { aname = &context->preallocated_names[context->name_count]; memset(aname, 0, sizeof(*aname)); } else { aname = kzalloc(sizeof(*aname), GFP_NOFS); if (!aname) return NULL; aname->should_free = true; } |
84cb777e6 audit: use macros... |
1772 |
aname->ino = AUDIT_INO_UNSET; |
78e2e802a audit: add a new ... |
1773 |
aname->type = type; |
5195d8e21 audit: dynamicall... |
1774 1775 1776 |
list_add_tail(&aname->list, &context->names_list); context->name_count++; |
5195d8e21 audit: dynamicall... |
1777 1778 |
return aname; } |
b0dd25a82 [PATCH] AUDIT: ke... |
1779 |
/** |
196a50855 audit: update the... |
1780 |
* __audit_reusename - fill out filename with info from existing entry |
7ac86265d audit: allow audi... |
1781 1782 1783 1784 1785 1786 1787 1788 1789 |
* @uptr: userland ptr to pathname * * Search the audit_names list for the current audit context. If there is an * existing entry with a matching "uptr" then return the filename * associated with that audit_name. If not, return NULL. */ struct filename * __audit_reusename(const __user char *uptr) { |
cdfb6b341 audit: use inline... |
1790 |
struct audit_context *context = audit_context(); |
7ac86265d audit: allow audi... |
1791 1792 1793 1794 1795 |
struct audit_names *n; list_for_each_entry(n, &context->names_list, list) { if (!n->name) continue; |
55422d0bd audit: replace ge... |
1796 1797 |
if (n->name->uptr == uptr) { n->name->refcnt++; |
7ac86265d audit: allow audi... |
1798 |
return n->name; |
55422d0bd audit: replace ge... |
1799 |
} |
7ac86265d audit: allow audi... |
1800 1801 1802 1803 1804 |
} return NULL; } /** |
196a50855 audit: update the... |
1805 |
* __audit_getname - add a name to the list |
b0dd25a82 [PATCH] AUDIT: ke... |
1806 1807 1808 1809 1810 |
* @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... |
1811 |
void __audit_getname(struct filename *name) |
1da177e4c Linux-2.6.12-rc2 |
1812 |
{ |
cdfb6b341 audit: use inline... |
1813 |
struct audit_context *context = audit_context(); |
5195d8e21 audit: dynamicall... |
1814 |
struct audit_names *n; |
1da177e4c Linux-2.6.12-rc2 |
1815 |
|
55422d0bd audit: replace ge... |
1816 |
if (!context->in_syscall) |
1da177e4c Linux-2.6.12-rc2 |
1817 |
return; |
91a27b2a7 vfs: define struc... |
1818 |
|
78e2e802a audit: add a new ... |
1819 |
n = audit_alloc_name(context, AUDIT_TYPE_UNKNOWN); |
5195d8e21 audit: dynamicall... |
1820 1821 1822 1823 1824 |
if (!n) return; n->name = name; n->name_len = AUDIT_NAME_FULL; |
adb5c2473 audit: make audit... |
1825 |
name->aname = n; |
55422d0bd audit: replace ge... |
1826 |
name->refcnt++; |
5195d8e21 audit: dynamicall... |
1827 |
|
f7ad3c6be vfs: add helpers ... |
1828 1829 |
if (!context->pwd.dentry) get_fs_pwd(current->fs, &context->pwd); |
1da177e4c Linux-2.6.12-rc2 |
1830 |
} |
5f3d544f1 audit: remove aud... |
1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 |
static inline int audit_copy_fcaps(struct audit_names *name, const struct dentry *dentry) { struct cpu_vfs_cap_data caps; int rc; if (!dentry) return 0; rc = get_vfs_caps_from_disk(dentry, &caps); if (rc) return rc; name->fcap.permitted = caps.permitted; name->fcap.inheritable = caps.inheritable; name->fcap.fE = !!(caps.magic_etc & VFS_CAP_FLAGS_EFFECTIVE); name->fcap.rootid = caps.rootid; name->fcap_ver = (caps.magic_etc & VFS_CAP_REVISION_MASK) >> VFS_CAP_REVISION_SHIFT; return 0; } /* Copy inode data into an audit_names. */ |
2efa48fec audit: Make audit... |
1855 1856 1857 |
static void audit_copy_inode(struct audit_names *name, const struct dentry *dentry, struct inode *inode, unsigned int flags) |
5f3d544f1 audit: remove aud... |
1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 |
{ name->ino = inode->i_ino; name->dev = inode->i_sb->s_dev; name->mode = inode->i_mode; name->uid = inode->i_uid; name->gid = inode->i_gid; name->rdev = inode->i_rdev; security_inode_getsecid(inode, &name->osid); if (flags & AUDIT_INODE_NOEVAL) { name->fcap_ver = -1; return; } audit_copy_fcaps(name, dentry); } |
b0dd25a82 [PATCH] AUDIT: ke... |
1872 |
/** |
bfcec7087 audit: set the na... |
1873 |
* __audit_inode - store the inode and device from a lookup |
b0dd25a82 [PATCH] AUDIT: ke... |
1874 |
* @name: name being audited |
481968f44 auditsc: fix kern... |
1875 |
* @dentry: dentry being audited |
79f6530cb audit: fix mq_ope... |
1876 |
* @flags: attributes for this particular entry |
b0dd25a82 [PATCH] AUDIT: ke... |
1877 |
*/ |
adb5c2473 audit: make audit... |
1878 |
void __audit_inode(struct filename *name, const struct dentry *dentry, |
79f6530cb audit: fix mq_ope... |
1879 |
unsigned int flags) |
1da177e4c Linux-2.6.12-rc2 |
1880 |
{ |
cdfb6b341 audit: use inline... |
1881 |
struct audit_context *context = audit_context(); |
d6335d77a security: Make in... |
1882 |
struct inode *inode = d_backing_inode(dentry); |
5195d8e21 audit: dynamicall... |
1883 |
struct audit_names *n; |
79f6530cb audit: fix mq_ope... |
1884 |
bool parent = flags & AUDIT_INODE_PARENT; |
a252f56a3 audit: more filte... |
1885 1886 1887 |
struct audit_entry *e; struct list_head *list = &audit_filter_list[AUDIT_FILTER_FS]; int i; |
1da177e4c Linux-2.6.12-rc2 |
1888 1889 1890 |
if (!context->in_syscall) return; |
5195d8e21 audit: dynamicall... |
1891 |
|
a252f56a3 audit: more filte... |
1892 |
rcu_read_lock(); |
699c1868a audit: purge unne... |
1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 |
list_for_each_entry_rcu(e, list, list) { for (i = 0; i < e->rule.field_count; i++) { struct audit_field *f = &e->rule.fields[i]; if (f->type == AUDIT_FSTYPE && audit_comparator(inode->i_sb->s_magic, f->op, f->val) && e->rule.action == AUDIT_NEVER) { rcu_read_unlock(); return; |
a252f56a3 audit: more filte... |
1903 1904 1905 1906 |
} } } rcu_read_unlock(); |
9cec9d68a audit: no need to... |
1907 1908 |
if (!name) goto out_alloc; |
adb5c2473 audit: make audit... |
1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 |
/* * 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... |
1924 |
list_for_each_entry_reverse(n, &context->names_list, list) { |
57c59f583 audit: fix filena... |
1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 |
if (n->ino) { /* valid inode number, use that for the comparison */ if (n->ino != inode->i_ino || n->dev != inode->i_sb->s_dev) continue; } else if (n->name) { /* inode number has not been set, check the name */ if (strcmp(n->name->name, name->name)) continue; } else /* no inode and no name (?!) ... this is odd ... */ |
bfcec7087 audit: set the na... |
1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 |
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 |
1947 |
} |
5195d8e21 audit: dynamicall... |
1948 |
|
9cec9d68a audit: no need to... |
1949 |
out_alloc: |
4a9284360 audit: correctly ... |
1950 1951 |
/* unable to find an entry with both a matching name and type */ n = audit_alloc_name(context, AUDIT_TYPE_UNKNOWN); |
5195d8e21 audit: dynamicall... |
1952 1953 |
if (!n) return; |
fcf22d826 audit: create pri... |
1954 |
if (name) { |
fd3522fdc audit: enable fil... |
1955 |
n->name = name; |
55422d0bd audit: replace ge... |
1956 |
name->refcnt++; |
fcf22d826 audit: create pri... |
1957 |
} |
4a9284360 audit: correctly ... |
1958 |
|
5195d8e21 audit: dynamicall... |
1959 |
out: |
bfcec7087 audit: set the na... |
1960 |
if (parent) { |
91a27b2a7 vfs: define struc... |
1961 |
n->name_len = n->name ? parent_len(n->name->name) : AUDIT_NAME_FULL; |
bfcec7087 audit: set the na... |
1962 |
n->type = AUDIT_TYPE_PARENT; |
79f6530cb audit: fix mq_ope... |
1963 1964 |
if (flags & AUDIT_INODE_HIDDEN) n->hidden = true; |
bfcec7087 audit: set the na... |
1965 1966 1967 1968 |
} else { n->name_len = AUDIT_NAME_FULL; n->type = AUDIT_TYPE_NORMAL; } |
74c3cbe33 [PATCH] audit: wa... |
1969 |
handle_path(dentry); |
57d465771 audit: ignore fca... |
1970 |
audit_copy_inode(n, dentry, inode, flags & AUDIT_INODE_NOEVAL); |
73241ccca [PATCH] Collect m... |
1971 |
} |
9f45f5bf3 new helper: audit... |
1972 1973 1974 1975 |
void __audit_file(const struct file *file) { __audit_inode(NULL, file->f_path.dentry, 0); } |
73241ccca [PATCH] Collect m... |
1976 |
/** |
c43a25abb audit: reverse ar... |
1977 |
* __audit_inode_child - collect inode info for created/removed objects |
73d3ec5ab [PATCH] fix misse... |
1978 |
* @parent: inode of dentry parent |
c43a25abb audit: reverse ar... |
1979 |
* @dentry: dentry being audited |
4fa6b5ecb audit: overhaul _... |
1980 |
* @type: AUDIT_TYPE_* value that we're looking for |
73241ccca [PATCH] Collect m... |
1981 1982 1983 1984 1985 1986 1987 1988 1989 |
* * For syscalls that create or remove filesystem objects, audit_inode * can only collect information for the filesystem object's parent. * This call updates the audit context with the child's information. * Syscalls that create a new filesystem object must be hooked after * the object is created. Syscalls that remove a filesystem object * must be hooked prior, in order to capture the target inode during * unsuccessful attempts. */ |
d6335d77a security: Make in... |
1990 |
void __audit_inode_child(struct inode *parent, |
4fa6b5ecb audit: overhaul _... |
1991 1992 |
const struct dentry *dentry, const unsigned char type) |
73241ccca [PATCH] Collect m... |
1993 |
{ |
cdfb6b341 audit: use inline... |
1994 |
struct audit_context *context = audit_context(); |
d6335d77a security: Make in... |
1995 |
struct inode *inode = d_backing_inode(dentry); |
795d673af audit_compare_dna... |
1996 |
const struct qstr *dname = &dentry->d_name; |
4fa6b5ecb audit: overhaul _... |
1997 |
struct audit_names *n, *found_parent = NULL, *found_child = NULL; |
42d5e3765 audit: filter PAT... |
1998 1999 2000 |
struct audit_entry *e; struct list_head *list = &audit_filter_list[AUDIT_FILTER_FS]; int i; |
73241ccca [PATCH] Collect m... |
2001 2002 2003 |
if (!context->in_syscall) return; |
42d5e3765 audit: filter PAT... |
2004 |
rcu_read_lock(); |
699c1868a audit: purge unne... |
2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 |
list_for_each_entry_rcu(e, list, list) { for (i = 0; i < e->rule.field_count; i++) { struct audit_field *f = &e->rule.fields[i]; if (f->type == AUDIT_FSTYPE && audit_comparator(parent->i_sb->s_magic, f->op, f->val) && e->rule.action == AUDIT_NEVER) { rcu_read_unlock(); return; |
42d5e3765 audit: filter PAT... |
2015 2016 2017 2018 |
} } } rcu_read_unlock(); |
74c3cbe33 [PATCH] audit: wa... |
2019 2020 |
if (inode) handle_one(inode); |
73241ccca [PATCH] Collect m... |
2021 |
|
4fa6b5ecb audit: overhaul _... |
2022 |
/* look for a parent entry first */ |
5195d8e21 audit: dynamicall... |
2023 |
list_for_each_entry(n, &context->names_list, list) { |
57c59f583 audit: fix filena... |
2024 2025 2026 |
if (!n->name || (n->type != AUDIT_TYPE_PARENT && n->type != AUDIT_TYPE_UNKNOWN)) |
5712e88f2 [PATCH] match aud... |
2027 |
continue; |
57c59f583 audit: fix filena... |
2028 2029 2030 2031 2032 |
if (n->ino == parent->i_ino && n->dev == parent->i_sb->s_dev && !audit_compare_dname_path(dname, n->name->name, n->name_len)) { if (n->type == AUDIT_TYPE_UNKNOWN) n->type = AUDIT_TYPE_PARENT; |
4fa6b5ecb audit: overhaul _... |
2033 2034 |
found_parent = n; break; |
f368c07d7 [PATCH] audit: pa... |
2035 |
} |
5712e88f2 [PATCH] match aud... |
2036 |
} |
73241ccca [PATCH] Collect m... |
2037 |
|
4fa6b5ecb audit: overhaul _... |
2038 |
/* is there a matching child entry? */ |
5195d8e21 audit: dynamicall... |
2039 |
list_for_each_entry(n, &context->names_list, list) { |
4fa6b5ecb audit: overhaul _... |
2040 |
/* can only match entries that have a name */ |
57c59f583 audit: fix filena... |
2041 2042 |
if (!n->name || (n->type != type && n->type != AUDIT_TYPE_UNKNOWN)) |
5712e88f2 [PATCH] match aud... |
2043 |
continue; |
795d673af audit_compare_dna... |
2044 |
if (!strcmp(dname->name, n->name->name) || |
91a27b2a7 vfs: define struc... |
2045 |
!audit_compare_dname_path(dname, n->name->name, |
4fa6b5ecb audit: overhaul _... |
2046 2047 |
found_parent ? found_parent->name_len : |
e3d6b07b8 audit: optimize a... |
2048 |
AUDIT_NAME_FULL)) { |
57c59f583 audit: fix filena... |
2049 2050 |
if (n->type == AUDIT_TYPE_UNKNOWN) n->type = type; |
4fa6b5ecb audit: overhaul _... |
2051 2052 |
found_child = n; break; |
5712e88f2 [PATCH] match aud... |
2053 |
} |
ac9910ce0 [PATCH] name_coun... |
2054 |
} |
5712e88f2 [PATCH] match aud... |
2055 |
|
5712e88f2 [PATCH] match aud... |
2056 |
if (!found_parent) { |
4fa6b5ecb audit: overhaul _... |
2057 2058 |
/* create a new, "anonymous" parent record */ n = audit_alloc_name(context, AUDIT_TYPE_PARENT); |
5195d8e21 audit: dynamicall... |
2059 |
if (!n) |
ac9910ce0 [PATCH] name_coun... |
2060 |
return; |
57d465771 audit: ignore fca... |
2061 |
audit_copy_inode(n, NULL, parent, 0); |
73d3ec5ab [PATCH] fix misse... |
2062 |
} |
5712e88f2 [PATCH] match aud... |
2063 2064 |
if (!found_child) { |
4fa6b5ecb audit: overhaul _... |
2065 2066 |
found_child = audit_alloc_name(context, type); if (!found_child) |
5712e88f2 [PATCH] match aud... |
2067 |
return; |
5712e88f2 [PATCH] match aud... |
2068 2069 2070 2071 2072 |
/* 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 _... |
2073 2074 |
found_child->name = found_parent->name; found_child->name_len = AUDIT_NAME_FULL; |
55422d0bd audit: replace ge... |
2075 |
found_child->name->refcnt++; |
5712e88f2 [PATCH] match aud... |
2076 |
} |
5712e88f2 [PATCH] match aud... |
2077 |
} |
57c59f583 audit: fix filena... |
2078 |
|
4fa6b5ecb audit: overhaul _... |
2079 |
if (inode) |
57d465771 audit: ignore fca... |
2080 |
audit_copy_inode(found_child, dentry, inode, 0); |
4fa6b5ecb audit: overhaul _... |
2081 |
else |
84cb777e6 audit: use macros... |
2082 |
found_child->ino = AUDIT_INO_UNSET; |
3e2efce06 [PATCH] fix fault... |
2083 |
} |
50e437d52 SUNRPC: Convert r... |
2084 |
EXPORT_SYMBOL_GPL(__audit_inode_child); |
3e2efce06 [PATCH] fix fault... |
2085 2086 |
/** |
b0dd25a82 [PATCH] AUDIT: ke... |
2087 2088 |
* auditsc_get_stamp - get local copies of audit_context values * @ctx: audit_context for the task |
2115bb250 audit: Use timesp... |
2089 |
* @t: timespec64 to store time recorded in the audit_context |
b0dd25a82 [PATCH] AUDIT: ke... |
2090 2091 2092 2093 |
* @serial: serial value that is recorded in the audit_context * * Also sets the context as auditable. */ |
48887e63d [PATCH] fix broke... |
2094 |
int auditsc_get_stamp(struct audit_context *ctx, |
2115bb250 audit: Use timesp... |
2095 |
struct timespec64 *t, unsigned int *serial) |
1da177e4c Linux-2.6.12-rc2 |
2096 |
{ |
48887e63d [PATCH] fix broke... |
2097 2098 |
if (!ctx->in_syscall) return 0; |
ce625a801 AUDIT: Reduce con... |
2099 2100 |
if (!ctx->serial) ctx->serial = audit_serial(); |
bfb4496e7 AUDIT: Assign ser... |
2101 2102 2103 |
t->tv_sec = ctx->ctime.tv_sec; t->tv_nsec = ctx->ctime.tv_nsec; *serial = ctx->serial; |
0590b9335 fixing audit rule... |
2104 2105 2106 2107 |
if (!ctx->prio) { ctx->prio = 1; ctx->current_state = AUDIT_RECORD_CONTEXT; } |
48887e63d [PATCH] fix broke... |
2108 |
return 1; |
1da177e4c Linux-2.6.12-rc2 |
2109 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
2110 |
/** |
20ca73bc7 [PATCH] Audit of ... |
2111 2112 2113 |
* __audit_mq_open - record audit data for a POSIX MQ open * @oflag: open flag * @mode: mode bits |
6b9625599 auditsc: fix kern... |
2114 |
* @attr: queue attributes |
20ca73bc7 [PATCH] Audit of ... |
2115 |
* |
20ca73bc7 [PATCH] Audit of ... |
2116 |
*/ |
df0a42837 switch mq_open() ... |
2117 |
void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr) |
20ca73bc7 [PATCH] Audit of ... |
2118 |
{ |
cdfb6b341 audit: use inline... |
2119 |
struct audit_context *context = audit_context(); |
20ca73bc7 [PATCH] Audit of ... |
2120 |
|
564f6993f sanitize audit_mq... |
2121 2122 2123 2124 |
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 ... |
2125 |
|
564f6993f sanitize audit_mq... |
2126 2127 |
context->mq_open.oflag = oflag; context->mq_open.mode = mode; |
20ca73bc7 [PATCH] Audit of ... |
2128 |
|
564f6993f sanitize audit_mq... |
2129 |
context->type = AUDIT_MQ_OPEN; |
20ca73bc7 [PATCH] Audit of ... |
2130 2131 2132 |
} /** |
c32c8af43 sanitize AUDIT_MQ... |
2133 |
* __audit_mq_sendrecv - record audit data for a POSIX MQ timed send/receive |
20ca73bc7 [PATCH] Audit of ... |
2134 2135 2136 |
* @mqdes: MQ descriptor * @msg_len: Message length * @msg_prio: Message priority |
c32c8af43 sanitize AUDIT_MQ... |
2137 |
* @abs_timeout: Message timeout in absolute time |
20ca73bc7 [PATCH] Audit of ... |
2138 |
* |
20ca73bc7 [PATCH] Audit of ... |
2139 |
*/ |
c32c8af43 sanitize AUDIT_MQ... |
2140 |
void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, |
b90477263 ipc: mqueue: Repl... |
2141 |
const struct timespec64 *abs_timeout) |
20ca73bc7 [PATCH] Audit of ... |
2142 |
{ |
cdfb6b341 audit: use inline... |
2143 |
struct audit_context *context = audit_context(); |
b90477263 ipc: mqueue: Repl... |
2144 |
struct timespec64 *p = &context->mq_sendrecv.abs_timeout; |
20ca73bc7 [PATCH] Audit of ... |
2145 |
|
c32c8af43 sanitize AUDIT_MQ... |
2146 |
if (abs_timeout) |
b90477263 ipc: mqueue: Repl... |
2147 |
memcpy(p, abs_timeout, sizeof(*p)); |
c32c8af43 sanitize AUDIT_MQ... |
2148 |
else |
b90477263 ipc: mqueue: Repl... |
2149 |
memset(p, 0, sizeof(*p)); |
20ca73bc7 [PATCH] Audit of ... |
2150 |
|
c32c8af43 sanitize AUDIT_MQ... |
2151 2152 2153 |
context->mq_sendrecv.mqdes = mqdes; context->mq_sendrecv.msg_len = msg_len; context->mq_sendrecv.msg_prio = msg_prio; |
20ca73bc7 [PATCH] Audit of ... |
2154 |
|
c32c8af43 sanitize AUDIT_MQ... |
2155 |
context->type = AUDIT_MQ_SENDRECV; |
20ca73bc7 [PATCH] Audit of ... |
2156 2157 2158 2159 2160 |
} /** * __audit_mq_notify - record audit data for a POSIX MQ notify * @mqdes: MQ descriptor |
6b9625599 auditsc: fix kern... |
2161 |
* @notification: Notification event |
20ca73bc7 [PATCH] Audit of ... |
2162 |
* |
20ca73bc7 [PATCH] Audit of ... |
2163 |
*/ |
20114f71b sanitize audit_mq... |
2164 |
void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification) |
20ca73bc7 [PATCH] Audit of ... |
2165 |
{ |
cdfb6b341 audit: use inline... |
2166 |
struct audit_context *context = audit_context(); |
20ca73bc7 [PATCH] Audit of ... |
2167 |
|
20114f71b sanitize audit_mq... |
2168 2169 2170 2171 |
if (notification) context->mq_notify.sigev_signo = notification->sigev_signo; else context->mq_notify.sigev_signo = 0; |
20ca73bc7 [PATCH] Audit of ... |
2172 |
|
20114f71b sanitize audit_mq... |
2173 2174 |
context->mq_notify.mqdes = mqdes; context->type = AUDIT_MQ_NOTIFY; |
20ca73bc7 [PATCH] Audit of ... |
2175 2176 2177 2178 2179 2180 2181 |
} /** * __audit_mq_getsetattr - record audit data for a POSIX MQ get/set attribute * @mqdes: MQ descriptor * @mqstat: MQ flags * |
20ca73bc7 [PATCH] Audit of ... |
2182 |
*/ |
7392906ea sanitize audit_mq... |
2183 |
void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat) |
20ca73bc7 [PATCH] Audit of ... |
2184 |
{ |
cdfb6b341 audit: use inline... |
2185 |
struct audit_context *context = audit_context(); |
7392906ea sanitize audit_mq... |
2186 2187 2188 |
context->mq_getsetattr.mqdes = mqdes; context->mq_getsetattr.mqstat = *mqstat; context->type = AUDIT_MQ_GETSETATTR; |
20ca73bc7 [PATCH] Audit of ... |
2189 2190 2191 |
} /** |
196a50855 audit: update the... |
2192 |
* __audit_ipc_obj - record audit data for ipc object |
073115d6b [PATCH] Rework of... |
2193 2194 |
* @ipcp: ipc permissions * |
073115d6b [PATCH] Rework of... |
2195 |
*/ |
a33e67510 sanitize audit_ip... |
2196 |
void __audit_ipc_obj(struct kern_ipc_perm *ipcp) |
073115d6b [PATCH] Rework of... |
2197 |
{ |
cdfb6b341 audit: use inline... |
2198 |
struct audit_context *context = audit_context(); |
a33e67510 sanitize audit_ip... |
2199 2200 2201 |
context->ipc.uid = ipcp->uid; context->ipc.gid = ipcp->gid; context->ipc.mode = ipcp->mode; |
e816f370c sanitize audit_ip... |
2202 |
context->ipc.has_perm = 0; |
a33e67510 sanitize audit_ip... |
2203 2204 |
security_ipc_getsecid(ipcp, &context->ipc.osid); context->type = AUDIT_IPC; |
073115d6b [PATCH] Rework of... |
2205 2206 2207 |
} /** |
196a50855 audit: update the... |
2208 |
* __audit_ipc_set_perm - record audit data for new ipc permissions |
b0dd25a82 [PATCH] AUDIT: ke... |
2209 2210 2211 2212 2213 |
* @qbytes: msgq bytes * @uid: msgq user id * @gid: msgq group id * @mode: msgq mode (permissions) * |
e816f370c sanitize audit_ip... |
2214 |
* Called only after audit_ipc_obj(). |
b0dd25a82 [PATCH] AUDIT: ke... |
2215 |
*/ |
2570ebbd1 switch kern_ipc_p... |
2216 |
void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode) |
1da177e4c Linux-2.6.12-rc2 |
2217 |
{ |
cdfb6b341 audit: use inline... |
2218 |
struct audit_context *context = audit_context(); |
1da177e4c Linux-2.6.12-rc2 |
2219 |
|
e816f370c sanitize audit_ip... |
2220 2221 2222 2223 2224 |
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 |
2225 |
} |
c2f0c7c35 The attached patc... |
2226 |
|
d9cfea91e audit: move audit... |
2227 |
void __audit_bprm(struct linux_binprm *bprm) |
473ae30bc [PATCH] execve ar... |
2228 |
{ |
cdfb6b341 audit: use inline... |
2229 |
struct audit_context *context = audit_context(); |
473ae30bc [PATCH] execve ar... |
2230 |
|
d9cfea91e audit: move audit... |
2231 2232 |
context->type = AUDIT_EXECVE; context->execve.argc = bprm->argc; |
473ae30bc [PATCH] execve ar... |
2233 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
2234 |
/** |
196a50855 audit: update the... |
2235 |
* __audit_socketcall - record audit data for sys_socketcall |
2950fa9d3 kernel: audit: be... |
2236 |
* @nargs: number of args, which should not be more than AUDITSC_ARGS. |
b0dd25a82 [PATCH] AUDIT: ke... |
2237 2238 |
* @args: args array * |
b0dd25a82 [PATCH] AUDIT: ke... |
2239 |
*/ |
2950fa9d3 kernel: audit: be... |
2240 |
int __audit_socketcall(int nargs, unsigned long *args) |
3ec3b2fba AUDIT: Capture sy... |
2241 |
{ |
cdfb6b341 audit: use inline... |
2242 |
struct audit_context *context = audit_context(); |
3ec3b2fba AUDIT: Capture sy... |
2243 |
|
2950fa9d3 kernel: audit: be... |
2244 2245 |
if (nargs <= 0 || nargs > AUDITSC_ARGS || !args) return -EINVAL; |
f3298dc4f sanitize audit_so... |
2246 2247 2248 |
context->type = AUDIT_SOCKETCALL; context->socketcall.nargs = nargs; memcpy(context->socketcall.args, args, nargs * sizeof(unsigned long)); |
2950fa9d3 kernel: audit: be... |
2249 |
return 0; |
3ec3b2fba AUDIT: Capture sy... |
2250 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
2251 |
/** |
db3495099 [PATCH] AUDIT_FD_... |
2252 2253 2254 2255 |
* __audit_fd_pair - record audit data for pipe and socketpair * @fd1: the first file descriptor * @fd2: the second file descriptor * |
db3495099 [PATCH] AUDIT_FD_... |
2256 |
*/ |
157cf649a sanitize audit_fd... |
2257 |
void __audit_fd_pair(int fd1, int fd2) |
db3495099 [PATCH] AUDIT_FD_... |
2258 |
{ |
cdfb6b341 audit: use inline... |
2259 |
struct audit_context *context = audit_context(); |
157cf649a sanitize audit_fd... |
2260 2261 |
context->fds[0] = fd1; context->fds[1] = fd2; |
db3495099 [PATCH] AUDIT_FD_... |
2262 2263 2264 |
} /** |
196a50855 audit: update the... |
2265 |
* __audit_sockaddr - record audit data for sys_bind, sys_connect, sys_sendto |
b0dd25a82 [PATCH] AUDIT: ke... |
2266 2267 2268 2269 2270 |
* @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... |
2271 |
int __audit_sockaddr(int len, void *a) |
3ec3b2fba AUDIT: Capture sy... |
2272 |
{ |
cdfb6b341 audit: use inline... |
2273 |
struct audit_context *context = audit_context(); |
3ec3b2fba AUDIT: Capture sy... |
2274 |
|
4f6b434fe don't reallocate ... |
2275 2276 2277 2278 2279 2280 |
if (!context->sockaddr) { void *p = kmalloc(sizeof(struct sockaddr_storage), GFP_KERNEL); if (!p) return -ENOMEM; context->sockaddr = p; } |
3ec3b2fba AUDIT: Capture sy... |
2281 |
|
4f6b434fe don't reallocate ... |
2282 2283 |
context->sockaddr_len = len; memcpy(context->sockaddr, a, len); |
3ec3b2fba AUDIT: Capture sy... |
2284 2285 |
return 0; } |
a5cb013da [PATCH] auditing ... |
2286 2287 |
void __audit_ptrace(struct task_struct *t) { |
cdfb6b341 audit: use inline... |
2288 |
struct audit_context *context = audit_context(); |
a5cb013da [PATCH] auditing ... |
2289 |
|
fa2bea2f5 audit: consistent... |
2290 |
context->target_pid = task_tgid_nr(t); |
c2a7780ef [AUDIT] collect u... |
2291 |
context->target_auid = audit_get_loginuid(t); |
c69e8d9c0 CRED: Use RCU to ... |
2292 |
context->target_uid = task_uid(t); |
4746ec5b0 [AUDIT] add sessi... |
2293 |
context->target_sessionid = audit_get_sessionid(t); |
2a862b32f Audit: use new LS... |
2294 |
security_task_getsecid(t, &context->target_sid); |
c2a7780ef [AUDIT] collect u... |
2295 |
memcpy(context->target_comm, t->comm, TASK_COMM_LEN); |
a5cb013da [PATCH] auditing ... |
2296 |
} |
b0dd25a82 [PATCH] AUDIT: ke... |
2297 |
/** |
b48345aaf audit: deliver si... |
2298 |
* audit_signal_info_syscall - record signal info for syscalls |
b0dd25a82 [PATCH] AUDIT: ke... |
2299 2300 2301 2302 2303 |
* @t: task being signaled * * If the audit subsystem is being terminated, record the task (pid) * and uid that is doing that. */ |
b48345aaf audit: deliver si... |
2304 |
int audit_signal_info_syscall(struct task_struct *t) |
c2f0c7c35 The attached patc... |
2305 |
{ |
e54dc2431 [PATCH] audit sig... |
2306 |
struct audit_aux_data_pids *axp; |
cdfb6b341 audit: use inline... |
2307 |
struct audit_context *ctx = audit_context(); |
b48345aaf audit: deliver si... |
2308 |
kuid_t t_uid = task_uid(t); |
e54dc2431 [PATCH] audit sig... |
2309 |
|
ab6434a13 audit: move audit... |
2310 2311 |
if (!audit_signals || audit_dummy_context()) return 0; |
e54dc2431 [PATCH] audit sig... |
2312 2313 2314 |
/* optimize the common case by putting first signal recipient directly * in audit_context */ if (!ctx->target_pid) { |
f1dc4867f audit: anchor all... |
2315 |
ctx->target_pid = task_tgid_nr(t); |
c2a7780ef [AUDIT] collect u... |
2316 |
ctx->target_auid = audit_get_loginuid(t); |
c69e8d9c0 CRED: Use RCU to ... |
2317 |
ctx->target_uid = t_uid; |
4746ec5b0 [AUDIT] add sessi... |
2318 |
ctx->target_sessionid = audit_get_sessionid(t); |
2a862b32f Audit: use new LS... |
2319 |
security_task_getsecid(t, &ctx->target_sid); |
c2a7780ef [AUDIT] collect u... |
2320 |
memcpy(ctx->target_comm, t->comm, TASK_COMM_LEN); |
e54dc2431 [PATCH] audit sig... |
2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 |
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:... |
2334 |
BUG_ON(axp->pid_count >= AUDIT_AUX_PIDS); |
e54dc2431 [PATCH] audit sig... |
2335 |
|
f1dc4867f audit: anchor all... |
2336 |
axp->target_pid[axp->pid_count] = task_tgid_nr(t); |
c2a7780ef [AUDIT] collect u... |
2337 |
axp->target_auid[axp->pid_count] = audit_get_loginuid(t); |
c69e8d9c0 CRED: Use RCU to ... |
2338 |
axp->target_uid[axp->pid_count] = t_uid; |
4746ec5b0 [AUDIT] add sessi... |
2339 |
axp->target_sessionid[axp->pid_count] = audit_get_sessionid(t); |
2a862b32f Audit: use new LS... |
2340 |
security_task_getsecid(t, &axp->target_sid[axp->pid_count]); |
c2a7780ef [AUDIT] collect u... |
2341 |
memcpy(axp->target_comm[axp->pid_count], t->comm, TASK_COMM_LEN); |
e54dc2431 [PATCH] audit sig... |
2342 2343 2344 |
axp->pid_count++; return 0; |
c2f0c7c35 The attached patc... |
2345 |
} |
0a4ff8c25 [PATCH] Abnormal ... |
2346 2347 |
/** |
3fc689e96 Any time fcaps or... |
2348 |
* __audit_log_bprm_fcaps - store information about a loading bprm and relevant fcaps |
d84f4f992 CRED: Inaugurate ... |
2349 2350 2351 |
* @bprm: pointer to the bprm being processed * @new: the proposed new credentials * @old: the old credentials |
3fc689e96 Any time fcaps or... |
2352 2353 2354 2355 |
* * 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... |
2356 2357 |
* -Eric */ |
d84f4f992 CRED: Inaugurate ... |
2358 2359 |
int __audit_log_bprm_fcaps(struct linux_binprm *bprm, const struct cred *new, const struct cred *old) |
3fc689e96 Any time fcaps or... |
2360 2361 |
{ struct audit_aux_data_bprm_fcaps *ax; |
cdfb6b341 audit: use inline... |
2362 |
struct audit_context *context = audit_context(); |
3fc689e96 Any time fcaps or... |
2363 |
struct cpu_vfs_cap_data vcaps; |
3fc689e96 Any time fcaps or... |
2364 2365 2366 |
ax = kmalloc(sizeof(*ax), GFP_KERNEL); if (!ax) |
d84f4f992 CRED: Inaugurate ... |
2367 |
return -ENOMEM; |
3fc689e96 Any time fcaps or... |
2368 2369 2370 2371 |
ax->d.type = AUDIT_BPRM_FCAPS; ax->d.next = context->aux; context->aux = (void *)ax; |
f4a4a8b12 file->f_path.dent... |
2372 |
get_vfs_caps_from_disk(bprm->file->f_path.dentry, &vcaps); |
3fc689e96 Any time fcaps or... |
2373 2374 2375 2376 |
ax->fcap.permitted = vcaps.permitted; ax->fcap.inheritable = vcaps.inheritable; ax->fcap.fE = !!(vcaps.magic_etc & VFS_CAP_FLAGS_EFFECTIVE); |
2fec30e24 audit: add suppor... |
2377 |
ax->fcap.rootid = vcaps.rootid; |
3fc689e96 Any time fcaps or... |
2378 |
ax->fcap_ver = (vcaps.magic_etc & VFS_CAP_REVISION_MASK) >> VFS_CAP_REVISION_SHIFT; |
d84f4f992 CRED: Inaugurate ... |
2379 2380 2381 |
ax->old_pcap.permitted = old->cap_permitted; ax->old_pcap.inheritable = old->cap_inheritable; ax->old_pcap.effective = old->cap_effective; |
7786f6b6d audit: add ambien... |
2382 |
ax->old_pcap.ambient = old->cap_ambient; |
3fc689e96 Any time fcaps or... |
2383 |
|
d84f4f992 CRED: Inaugurate ... |
2384 2385 2386 |
ax->new_pcap.permitted = new->cap_permitted; ax->new_pcap.inheritable = new->cap_inheritable; ax->new_pcap.effective = new->cap_effective; |
7786f6b6d audit: add ambien... |
2387 |
ax->new_pcap.ambient = new->cap_ambient; |
d84f4f992 CRED: Inaugurate ... |
2388 |
return 0; |
3fc689e96 Any time fcaps or... |
2389 2390 2391 |
} /** |
e68b75a02 When the capset s... |
2392 |
* __audit_log_capset - store information about the arguments to the capset syscall |
d84f4f992 CRED: Inaugurate ... |
2393 2394 |
* @new: the new credentials * @old: the old (current) credentials |
e68b75a02 When the capset s... |
2395 |
* |
da3dae54e Documentation: Do... |
2396 |
* Record the arguments userspace sent to sys_capset for later printing by the |
e68b75a02 When the capset s... |
2397 2398 |
* audit system if applicable */ |
ca24a23eb audit: Simplify a... |
2399 |
void __audit_log_capset(const struct cred *new, const struct cred *old) |
e68b75a02 When the capset s... |
2400 |
{ |
cdfb6b341 audit: use inline... |
2401 |
struct audit_context *context = audit_context(); |
fa2bea2f5 audit: consistent... |
2402 |
context->capset.pid = task_tgid_nr(current); |
57f71a0af sanitize audit_lo... |
2403 2404 2405 |
context->capset.cap.effective = new->cap_effective; context->capset.cap.inheritable = new->cap_effective; context->capset.cap.permitted = new->cap_permitted; |
7786f6b6d audit: add ambien... |
2406 |
context->capset.cap.ambient = new->cap_ambient; |
57f71a0af sanitize audit_lo... |
2407 |
context->type = AUDIT_CAPSET; |
e68b75a02 When the capset s... |
2408 |
} |
120a795da audit mmap |
2409 2410 |
void __audit_mmap_fd(int fd, int flags) { |
cdfb6b341 audit: use inline... |
2411 |
struct audit_context *context = audit_context(); |
120a795da audit mmap |
2412 2413 2414 2415 |
context->mmap.fd = fd; context->mmap.flags = flags; context->type = AUDIT_MMAP; } |
ca86cad73 audit: log module... |
2416 2417 |
void __audit_log_kern_module(char *name) { |
cdfb6b341 audit: use inline... |
2418 |
struct audit_context *context = audit_context(); |
ca86cad73 audit: log module... |
2419 |
|
b305f7ed0 audit: fix potent... |
2420 2421 2422 |
context->module.name = kstrdup(name, GFP_KERNEL); if (!context->module.name) audit_log_lost("out of memory in __audit_log_kern_module"); |
ca86cad73 audit: log module... |
2423 2424 |
context->type = AUDIT_KERN_MODULE; } |
de8cd83e9 audit: Record fan... |
2425 2426 |
void __audit_fanotify(unsigned int response) { |
cdfb6b341 audit: use inline... |
2427 |
audit_log(audit_context(), GFP_KERNEL, |
de8cd83e9 audit: Record fan... |
2428 2429 |
AUDIT_FANOTIFY, "resp=%u", response); } |
2d87a0674 timekeeping: Audi... |
2430 2431 2432 2433 2434 2435 |
void __audit_tk_injoffset(struct timespec64 offset) { audit_log(audit_context(), GFP_KERNEL, AUDIT_TIME_INJOFFSET, "sec=%lli nsec=%li", (long long)offset.tv_sec, offset.tv_nsec); } |
7e8eda734 ntp: Audit NTP pa... |
2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 |
static void audit_log_ntp_val(const struct audit_ntp_data *ad, const char *op, enum audit_ntp_type type) { const struct audit_ntp_val *val = &ad->vals[type]; if (val->newval == val->oldval) return; audit_log(audit_context(), GFP_KERNEL, AUDIT_TIME_ADJNTPVAL, "op=%s old=%lli new=%lli", op, val->oldval, val->newval); } void __audit_ntp_log(const struct audit_ntp_data *ad) { audit_log_ntp_val(ad, "offset", AUDIT_NTP_OFFSET); audit_log_ntp_val(ad, "freq", AUDIT_NTP_FREQ); audit_log_ntp_val(ad, "status", AUDIT_NTP_STATUS); audit_log_ntp_val(ad, "tai", AUDIT_NTP_TAI); audit_log_ntp_val(ad, "tick", AUDIT_NTP_TICK); audit_log_ntp_val(ad, "adjust", AUDIT_NTP_ADJUST); } |
7b9205bd7 audit: create exp... |
2457 |
static void audit_log_task(struct audit_buffer *ab) |
85e7bac33 seccomp: audit ab... |
2458 |
{ |
cca080d9b userns: Convert a... |
2459 2460 |
kuid_t auid, uid; kgid_t gid; |
85e7bac33 seccomp: audit ab... |
2461 |
unsigned int sessionid; |
9eab339b1 audit: get comm u... |
2462 |
char comm[sizeof(current->comm)]; |
85e7bac33 seccomp: audit ab... |
2463 2464 2465 2466 2467 2468 |
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... |
2469 2470 2471 2472 |
from_kuid(&init_user_ns, auid), from_kuid(&init_user_ns, uid), from_kgid(&init_user_ns, gid), sessionid); |
85e7bac33 seccomp: audit ab... |
2473 |
audit_log_task_context(ab); |
fa2bea2f5 audit: consistent... |
2474 |
audit_log_format(ab, " pid=%d comm=", task_tgid_nr(current)); |
9eab339b1 audit: get comm u... |
2475 |
audit_log_untrustedstring(ab, get_task_comm(comm, current)); |
4766b199e audit: consolidat... |
2476 |
audit_log_d_path_exe(ab, current->mm); |
7b9205bd7 audit: create exp... |
2477 |
} |
e68b75a02 When the capset s... |
2478 |
/** |
0a4ff8c25 [PATCH] Abnormal ... |
2479 |
* audit_core_dumps - record information about processes that end abnormally |
6d9525b52 kerneldoc fix in ... |
2480 |
* @signr: signal value |
0a4ff8c25 [PATCH] Abnormal ... |
2481 2482 2483 2484 2485 2486 2487 |
* * 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 ... |
2488 2489 2490 2491 2492 2493 |
if (!audit_enabled) return; if (signr == SIGQUIT) /* don't care for those */ return; |
d87de4a87 audit: tie ANOM_A... |
2494 |
ab = audit_log_start(audit_context(), GFP_KERNEL, AUDIT_ANOM_ABEND); |
0644ec0cc audit: catch poss... |
2495 2496 |
if (unlikely(!ab)) return; |
61c0ee879 audit: drop audit... |
2497 |
audit_log_task(ab); |
89670affa audit: Make AUDIT... |
2498 |
audit_log_format(ab, " sig=%ld res=1", signr); |
85e7bac33 seccomp: audit ab... |
2499 2500 |
audit_log_end(ab); } |
0a4ff8c25 [PATCH] Abnormal ... |
2501 |
|
326bee028 seccomp: Don't sp... |
2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 |
/** * audit_seccomp - record information about a seccomp action * @syscall: syscall number * @signr: signal value * @code: the seccomp action * * Record the information associated with a seccomp action. Event filtering for * seccomp actions that are not to be logged is done in seccomp_log(). * Therefore, this function forces auditing independent of the audit_enabled * and dummy context state because seccomp actions should be logged even when * audit is not in use. */ void audit_seccomp(unsigned long syscall, long signr, int code) |
85e7bac33 seccomp: audit ab... |
2515 2516 |
{ struct audit_buffer *ab; |
9b8753fff audit: tie SECCOM... |
2517 |
ab = audit_log_start(audit_context(), GFP_KERNEL, AUDIT_SECCOMP); |
7b9205bd7 audit: create exp... |
2518 2519 2520 |
if (unlikely(!ab)) return; audit_log_task(ab); |
84db564aa audit: add arch f... |
2521 |
audit_log_format(ab, " sig=%ld arch=%x syscall=%ld compat=%d ip=0x%lx code=0x%x", |
16add4116 syscall_get_arch:... |
2522 |
signr, syscall_get_arch(current), syscall, |
efbc0fbf3 auditsc: for secc... |
2523 |
in_compat_syscall(), KSTK_EIP(current), code); |
0a4ff8c25 [PATCH] Abnormal ... |
2524 2525 |
audit_log_end(ab); } |
916d75761 Fix rule eviction... |
2526 |
|
ea6eca778 seccomp: Audit at... |
2527 2528 2529 2530 2531 2532 2533 |
void audit_seccomp_actions_logged(const char *names, const char *old_names, int res) { struct audit_buffer *ab; if (!audit_enabled) return; |
8982a1fbe audit: use new au... |
2534 |
ab = audit_log_start(audit_context(), GFP_KERNEL, |
ea6eca778 seccomp: Audit at... |
2535 2536 2537 |
AUDIT_CONFIG_CHANGE); if (unlikely(!ab)) return; |
d0a3f18a7 audit: minimize o... |
2538 2539 2540 |
audit_log_format(ab, "op=seccomp-logging actions=%s old-actions=%s res=%d", names, old_names, res); |
ea6eca778 seccomp: Audit at... |
2541 2542 |
audit_log_end(ab); } |
916d75761 Fix rule eviction... |
2543 2544 |
struct list_head *audit_killed_trees(void) { |
cdfb6b341 audit: use inline... |
2545 |
struct audit_context *ctx = audit_context(); |
916d75761 Fix rule eviction... |
2546 2547 2548 2549 |
if (likely(!ctx || !ctx->in_syscall)) return NULL; return &ctx->killed_trees; } |