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![Amy Griffis](/assets/img/avatar_default.png)
When an audit event involves changes to a directory entry, include a PATH record for the directory itself. A few other notable changes: - fixed audit_inode_child() hooks in fsnotify_move() - removed unused flags arg from audit_inode() - added audit log routines for logging a portion of a string Here's some sample output. before patch: type=SYSCALL msg=audit(1149821605.320:26): arch=40000003 syscall=39 success=yes exit=0 a0=bf8d3c7c a1=1ff a2=804e1b8 a3=bf8d3c7c items=1 ppid=739 pid=800 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=ttyS0 comm="mkdir" exe="/bin/mkdir" subj=root:system_r:unconfined_t:s0-s0:c0.c255 type=CWD msg=audit(1149821605.320:26): cwd="/root" type=PATH msg=audit(1149821605.320:26): item=0 name="foo" parent=164068 inode=164010 dev=03:00 mode=040755 ouid=0 ogid=0 rdev=00:00 obj=root:object_r:user_home_t:s0 after patch: type=SYSCALL msg=audit(1149822032.332:24): arch=40000003 syscall=39 success=yes exit=0 a0=bfdd9c7c a1=1ff a2=804e1b8 a3=bfdd9c7c items=2 ppid=714 pid=777 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=ttyS0 comm="mkdir" exe="/bin/mkdir" subj=root:system_r:unconfined_t:s0-s0:c0.c255 type=CWD msg=audit(1149822032.332:24): cwd="/root" type=PATH msg=audit(1149822032.332:24): item=0 name="/root" inode=164068 dev=03:00 mode=040750 ouid=0 ogid=0 rdev=00:00 obj=root:object_r:user_home_dir_t:s0 type=PATH msg=audit(1149822032.332:24): item=1 name="foo" inode=164010 dev=03:00 mode=040755 ouid=0 ogid=0 rdev=00:00 obj=root:object_r:user_home_t:s0 Signed-off-by: Amy Griffis <amy.griffis@hp.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
145 lines
4.5 KiB
C
145 lines
4.5 KiB
C
/* audit -- definition of audit_context structure and supporting types
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*
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* Copyright 2003-2004 Red Hat, Inc.
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* Copyright 2005 Hewlett-Packard Development Company, L.P.
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* Copyright 2005 IBM Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/fs.h>
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#include <linux/audit.h>
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#include <linux/skbuff.h>
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/* 0 = no checking
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1 = put_count checking
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2 = verbose put_count checking
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*/
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#define AUDIT_DEBUG 0
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/* At task start time, the audit_state is set in the audit_context using
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a per-task filter. At syscall entry, the audit_state is augmented by
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the syscall filter. */
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enum audit_state {
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AUDIT_DISABLED, /* Do not create per-task audit_context.
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* No syscall-specific audit records can
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* be generated. */
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AUDIT_SETUP_CONTEXT, /* Create the per-task audit_context,
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* but don't necessarily fill it in at
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* syscall entry time (i.e., filter
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* instead). */
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AUDIT_BUILD_CONTEXT, /* Create the per-task audit_context,
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* and always fill it in at syscall
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* entry time. This makes a full
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* syscall record available if some
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* other part of the kernel decides it
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* should be recorded. */
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AUDIT_RECORD_CONTEXT /* Create the per-task audit_context,
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* always fill it in at syscall entry
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* time, and always write out the audit
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* record at syscall exit time. */
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};
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/* Rule lists */
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struct audit_parent;
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struct audit_watch {
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atomic_t count; /* reference count */
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char *path; /* insertion path */
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dev_t dev; /* associated superblock device */
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unsigned long ino; /* associated inode number */
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struct audit_parent *parent; /* associated parent */
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struct list_head wlist; /* entry in parent->watches list */
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struct list_head rules; /* associated rules */
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};
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struct audit_field {
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u32 type;
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u32 val;
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u32 op;
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char *se_str;
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struct selinux_audit_rule *se_rule;
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};
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struct audit_krule {
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int vers_ops;
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u32 flags;
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u32 listnr;
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u32 action;
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u32 mask[AUDIT_BITMASK_SIZE];
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u32 buflen; /* for data alloc on list rules */
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u32 field_count;
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struct audit_field *fields;
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struct audit_field *inode_f; /* quick access to an inode field */
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struct audit_watch *watch; /* associated watch */
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struct list_head rlist; /* entry in audit_watch.rules list */
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};
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struct audit_entry {
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struct list_head list;
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struct rcu_head rcu;
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struct audit_krule rule;
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};
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extern int audit_pid;
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#define AUDIT_INODE_BUCKETS 32
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extern struct list_head audit_inode_hash[AUDIT_INODE_BUCKETS];
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static inline int audit_hash_ino(u32 ino)
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{
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return (ino & (AUDIT_INODE_BUCKETS-1));
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}
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extern int audit_comparator(const u32 left, const u32 op, const u32 right);
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extern int audit_compare_dname_path(const char *dname, const char *path,
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int *dirlen);
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extern struct sk_buff * audit_make_reply(int pid, int seq, int type,
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int done, int multi,
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void *payload, int size);
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extern void audit_send_reply(int pid, int seq, int type,
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int done, int multi,
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void *payload, int size);
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extern void audit_log_lost(const char *message);
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extern void audit_panic(const char *message);
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struct audit_netlink_list {
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int pid;
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struct sk_buff_head q;
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};
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int audit_send_list(void *);
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struct inotify_watch;
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extern void audit_free_parent(struct inotify_watch *);
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extern void audit_handle_ievent(struct inotify_watch *, u32, u32, u32,
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const char *, struct inode *);
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extern int selinux_audit_rule_update(void);
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#ifdef CONFIG_AUDITSYSCALL
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extern void __audit_signal_info(int sig, struct task_struct *t);
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static inline void audit_signal_info(int sig, struct task_struct *t)
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{
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if (unlikely(audit_pid && t->tgid == audit_pid))
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__audit_signal_info(sig, t);
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}
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extern enum audit_state audit_filter_inodes(struct task_struct *,
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struct audit_context *);
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extern void audit_set_auditable(struct audit_context *);
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#else
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#define audit_signal_info(s,t)
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#define audit_filter_inodes(t,c) AUDIT_DISABLED
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#define audit_set_auditable(c)
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#endif
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