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Merge branch 'audit.b50' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current

Browse Source 
* 'audit.b50' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current:
  [PATCH] new predicate - AUDIT_FILETYPE
  [patch 2/2] Use find_task_by_vpid in audit code
  [patch 1/2] audit: let userspace fully control TTY input auditing
  [PATCH 2/2] audit: fix sparse shadowed variable warnings
  [PATCH 1/2] audit: move extern declarations to audit.h
  Audit: MAINTAINERS update
  Audit: increase the maximum length of the key field
  Audit: standardize string audit interfaces
  Audit: stop deadlock from signals under load
  Audit: save audit_backlog_limit audit messages in case auditd comes back
  Audit: collect sessionid in netlink messages
  Audit: end printk with newline
This commit is contained in:
Linus Torvalds 2008-04-29 11:41:22 -07:00
commit 9781db7b34
22 changed files with 346 additions and 233 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
MAINTAINERS
View File

@ -752,11 +752,13 @@ W: http://atmelwlandriver.sourceforge.net/
S: Maintained
AUDIT SUBSYSTEM
P: David Woodhouse
M: dwmw2@infradead.org
P: Al Viro
M: viro@zeniv.linux.org.uk
P: Eric Paris
M: eparis@redhat.com
L: linux-audit@redhat.com (subscribers-only)
W: http://people.redhat.com/sgrubb/audit/
T: git kernel.org:/pub/scm/linux/kernel/git/dwmw2/audit-2.6.git
T: git git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current.git
S: Maintained
AUXILIARY DISPLAY DRIVERS

63
drivers/char/tty_audit.c
View File

@ -92,7 +92,7 @@ static void tty_audit_buf_push(struct task_struct *tsk, uid_t loginuid,
get_task_comm(name, tsk);
audit_log_untrustedstring(ab, name);
audit_log_format(ab, " data=");
audit_log_n_untrustedstring(ab, buf->valid, buf->data);
audit_log_n_untrustedstring(ab, buf->data, buf->valid);
audit_log_end(ab);
}
buf->valid = 0;
@ -151,14 +151,9 @@ void tty_audit_fork(struct signal_struct *sig)
/**
* tty_audit_push_task - Flush task's pending audit data
*/
void tty_audit_push_task(struct task_struct *tsk, uid_t loginuid)
void tty_audit_push_task(struct task_struct *tsk, uid_t loginuid, u32 sessionid)
{
struct tty_audit_buf *buf;
/* FIXME I think this is correct. Check against netlink once that is
* I really need to read this code more closely. But that's for
* another patch.
*/
unsigned int sessionid = audit_get_sessionid(tsk);
spin_lock_irq(&tsk->sighand->siglock);
buf = tsk->signal->tty_audit_buf;
@ -238,6 +233,10 @@ void tty_audit_add_data(struct tty_struct *tty, unsigned char *data,
if (unlikely(size == 0))
return;
if (tty->driver->type == TTY_DRIVER_TYPE_PTY
&& tty->driver->subtype == PTY_TYPE_MASTER)
return;
buf = tty_audit_buf_get(tty);
if (!buf)
return;
@ -300,53 +299,3 @@ void tty_audit_push(struct tty_struct *tty)
tty_audit_buf_put(buf);
}
}
/**
* tty_audit_opening - A TTY is being opened.
*
* As a special hack, tasks that close all their TTYs and open new ones
* are assumed to be system daemons (e.g. getty) and auditing is
* automatically disabled for them.
*/
void tty_audit_opening(void)
{
int disable;
disable = 1;
spin_lock_irq(&current->sighand->siglock);
if (current->signal->audit_tty == 0)
disable = 0;
spin_unlock_irq(&current->sighand->siglock);
if (!disable)
return;
task_lock(current);
if (current->files) {
struct fdtable *fdt;
unsigned i;
/*
* We don't take a ref to the file, so we must hold ->file_lock
* instead.
*/
spin_lock(&current->files->file_lock);
fdt = files_fdtable(current->files);
for (i = 0; i < fdt->max_fds; i++) {
struct file *filp;
filp = fcheck_files(current->files, i);
if (filp && is_tty(filp)) {
disable = 0;
break;
}
}
spin_unlock(&current->files->file_lock);
}
task_unlock(current);
if (!disable)
return;
spin_lock_irq(&current->sighand->siglock);
current->signal->audit_tty = 0;
spin_unlock_irq(&current->sighand->siglock);
}

5
drivers/char/tty_io.c
View File

@ -2755,7 +2755,6 @@ got_driver:
__proc_set_tty(current, tty);
spin_unlock_irq(&current->sighand->siglock);
mutex_unlock(&tty_mutex);
tty_audit_opening();
return 0;
}
@ -2818,10 +2817,8 @@ static int ptmx_open(struct inode *inode, struct file *filp)
check_tty_count(tty, "tty_open");
retval = ptm_driver->open(tty, filp);
if (!retval) {
tty_audit_opening();
if (!retval)
return 0;
}
out1:
release_dev(filp);
return retval;

28
include/linux/audit.h
View File

@ -146,7 +146,7 @@
/* Rule structure sizes -- if these change, different AUDIT_ADD and
* AUDIT_LIST commands must be implemented. */
#define AUDIT_MAX_FIELDS 64
#define AUDIT_MAX_KEY_LEN 32
#define AUDIT_MAX_KEY_LEN 256
#define AUDIT_BITMASK_SIZE 64
#define AUDIT_WORD(nr) ((__u32)((nr)/32))
#define AUDIT_BIT(nr) (1 << ((nr) - AUDIT_WORD(nr)*32))
@ -209,6 +209,7 @@
#define AUDIT_WATCH 105
#define AUDIT_PERM 106
#define AUDIT_DIR 107
#define AUDIT_FILETYPE 108
#define AUDIT_ARG0 200
#define AUDIT_ARG1 (AUDIT_ARG0+1)
@ -549,16 +550,20 @@ extern void audit_log_format(struct audit_buffer *ab,
const char *fmt, ...)
__attribute__((format(printf,2,3)));
extern void audit_log_end(struct audit_buffer *ab);
extern void audit_log_hex(struct audit_buffer *ab,
const unsigned char *buf,
size_t len);
extern int audit_string_contains_control(const char *string,
size_t len);
extern void audit_log_n_hex(struct audit_buffer *ab,
const unsigned char *buf,
size_t len);
extern void audit_log_n_string(struct audit_buffer *ab,
const char *buf,
size_t n);
#define audit_log_string(a,b) audit_log_n_string(a, b, strlen(b));
extern void audit_log_n_untrustedstring(struct audit_buffer *ab,
const char *string,
size_t n);
extern void audit_log_untrustedstring(struct audit_buffer *ab,
const char *string);
extern void audit_log_n_untrustedstring(struct audit_buffer *ab,
size_t n,
const char *string);
extern void audit_log_d_path(struct audit_buffer *ab,
const char *prefix,
struct path *path);
@ -569,7 +574,8 @@ extern int audit_update_lsm_rules(void);
extern int audit_filter_user(struct netlink_skb_parms *cb, int type);
extern int audit_filter_type(int type);
extern int audit_receive_filter(int type, int pid, int uid, int seq,
void *data, size_t datasz, uid_t loginuid, u32 sid);
void *data, size_t datasz, uid_t loginuid,
u32 sessionid, u32 sid);
extern int audit_enabled;
#else
#define audit_log(c,g,t,f,...) do { ; } while (0)
@ -577,9 +583,11 @@ extern int audit_enabled;
#define audit_log_vformat(b,f,a) do { ; } while (0)
#define audit_log_format(b,f,...) do { ; } while (0)
#define audit_log_end(b) do { ; } while (0)
#define audit_log_hex(a,b,l) do { ; } while (0)
#define audit_log_untrustedstring(a,s) do { ; } while (0)
#define audit_log_n_hex(a,b,l) do { ; } while (0)
#define audit_log_n_string(a,c,l) do { ; } while (0)
#define audit_log_string(a,c) do { ; } while (0)
#define audit_log_n_untrustedstring(a,n,s) do { ; } while (0)
#define audit_log_untrustedstring(a,s) do { ; } while (0)
#define audit_log_d_path(b, p, d) do { ; } while (0)
#define audit_enabled 0
#endif

1
include/linux/netlink.h
View File

@ -166,6 +166,7 @@ struct netlink_skb_parms
__u32 dst_group;
kernel_cap_t eff_cap;
__u32 loginuid; /* Login (audit) uid */
__u32 sessionid; /* Session id (audit) */
__u32 sid; /* SELinux security id */
};

9
include/linux/tty.h
View File

@ -300,7 +300,6 @@ extern void tty_hangup(struct tty_struct * tty);
extern void tty_vhangup(struct tty_struct * tty);
extern void tty_unhangup(struct file *filp);
extern int tty_hung_up_p(struct file * filp);
extern int is_tty(struct file *filp);
extern void do_SAK(struct tty_struct *tty);
extern void __do_SAK(struct tty_struct *tty);
extern void disassociate_ctty(int priv);
@ -351,8 +350,7 @@ extern void tty_audit_add_data(struct tty_struct *tty, unsigned char *data,
extern void tty_audit_exit(void);
extern void tty_audit_fork(struct signal_struct *sig);
extern void tty_audit_push(struct tty_struct *tty);
extern void tty_audit_push_task(struct task_struct *tsk, uid_t loginuid);
extern void tty_audit_opening(void);
extern void tty_audit_push_task(struct task_struct *tsk, uid_t loginuid, u32 sessionid);
#else
static inline void tty_audit_add_data(struct tty_struct *tty,
unsigned char *data, size_t size)
@ -367,10 +365,7 @@ static inline void tty_audit_fork(struct signal_struct *sig)
static inline void tty_audit_push(struct tty_struct *tty)
{
}
static inline void tty_audit_push_task(struct task_struct *tsk, uid_t loginuid)
{
}
static inline void tty_audit_opening(void)
static inline void tty_audit_push_task(struct task_struct *tsk, uid_t loginuid, u32 sessionid)
{
}
#endif

1
include/net/netlabel.h
View File

@ -103,6 +103,7 @@ struct cipso_v4_doi;
struct netlbl_audit {
u32 secid;
uid_t loginuid;
u32 sessionid;
};
/*

23
include/net/xfrm.h
View File

@ -597,8 +597,9 @@ struct xfrm_spi_skb_cb {
/* Audit Information */
struct xfrm_audit
{
u32 loginuid;
u32 secid;
uid_t loginuid;
u32 sessionid;
};
#ifdef CONFIG_AUDITSYSCALL
@ -616,13 +617,13 @@ static inline struct audit_buffer *xfrm_audit_start(const char *op)
return audit_buf;
}
static inline void xfrm_audit_helper_usrinfo(u32 auid, u32 secid,
static inline void xfrm_audit_helper_usrinfo(uid_t auid, u32 ses, u32 secid,
struct audit_buffer *audit_buf)
{
char *secctx;
u32 secctx_len;
audit_log_format(audit_buf, " auid=%u", auid);
audit_log_format(audit_buf, " auid=%u ses=%u", auid, ses);
if (secid != 0 &&
security_secid_to_secctx(secid, &secctx, &secctx_len) == 0) {
audit_log_format(audit_buf, " subj=%s", secctx);
@ -632,13 +633,13 @@ static inline void xfrm_audit_helper_usrinfo(u32 auid, u32 secid,
}
extern void xfrm_audit_policy_add(struct xfrm_policy *xp, int result,
u32 auid, u32 secid);
u32 auid, u32 ses, u32 secid);
extern void xfrm_audit_policy_delete(struct xfrm_policy *xp, int result,
u32 auid, u32 secid);
u32 auid, u32 ses, u32 secid);
extern void xfrm_audit_state_add(struct xfrm_state *x, int result,
u32 auid, u32 secid);
u32 auid, u32 ses, u32 secid);
extern void xfrm_audit_state_delete(struct xfrm_state *x, int result,
u32 auid, u32 secid);
u32 auid, u32 ses, u32 secid);
extern void xfrm_audit_state_replay_overflow(struct xfrm_state *x,
struct sk_buff *skb);
extern void xfrm_audit_state_notfound_simple(struct sk_buff *skb, u16 family);
@ -647,10 +648,10 @@ extern void xfrm_audit_state_notfound(struct sk_buff *skb, u16 family,
extern void xfrm_audit_state_icvfail(struct xfrm_state *x,
struct sk_buff *skb, u8 proto);
#else
#define xfrm_audit_policy_add(x, r, a, s) do { ; } while (0)
#define xfrm_audit_policy_delete(x, r, a, s) do { ; } while (0)
#define xfrm_audit_state_add(x, r, a, s) do { ; } while (0)
#define xfrm_audit_state_delete(x, r, a, s) do { ; } while (0)
#define xfrm_audit_policy_add(x, r, a, se, s) do { ; } while (0)
#define xfrm_audit_policy_delete(x, r, a, se, s) do { ; } while (0)
#define xfrm_audit_state_add(x, r, a, se, s) do { ; } while (0)
#define xfrm_audit_state_delete(x, r, a, se, s) do { ; } while (0)
#define xfrm_audit_state_replay_overflow(x, s) do { ; } while (0)
#define xfrm_audit_state_notfound_simple(s, f) do { ; } while (0)
#define xfrm_audit_state_notfound(s, f, sp, sq) do { ; } while (0)

249
kernel/audit.c
View File

@ -126,6 +126,8 @@ static int audit_freelist_count;
static LIST_HEAD(audit_freelist);
static struct sk_buff_head audit_skb_queue;
/* queue of skbs to send to auditd when/if it comes back */
static struct sk_buff_head audit_skb_hold_queue;
static struct task_struct *kauditd_task;
static DECLARE_WAIT_QUEUE_HEAD(kauditd_wait);
static DECLARE_WAIT_QUEUE_HEAD(audit_backlog_wait);
@ -154,6 +156,11 @@ struct audit_buffer {
gfp_t gfp_mask;
};
struct audit_reply {
int pid;
struct sk_buff *skb;
};
static void audit_set_pid(struct audit_buffer *ab, pid_t pid)
{
if (ab) {
@ -252,14 +259,15 @@ void audit_log_lost(const char *message)
}
static int audit_log_config_change(char *function_name, int new, int old,
uid_t loginuid, u32 sid, int allow_changes)
uid_t loginuid, u32 sessionid, u32 sid,
int allow_changes)
{
struct audit_buffer *ab;
int rc = 0;
ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE);
audit_log_format(ab, "%s=%d old=%d by auid=%u", function_name, new,
old, loginuid);
audit_log_format(ab, "%s=%d old=%d auid=%u ses=%u", function_name, new,
old, loginuid, sessionid);
if (sid) {
char *ctx = NULL;
u32 len;
@ -279,7 +287,8 @@ static int audit_log_config_change(char *function_name, int new, int old,
}
static int audit_do_config_change(char *function_name, int *to_change,
int new, uid_t loginuid, u32 sid)
int new, uid_t loginuid, u32 sessionid,
u32 sid)
{
int allow_changes, rc = 0, old = *to_change;
@ -290,8 +299,8 @@ static int audit_do_config_change(char *function_name, int *to_change,
allow_changes = 1;
if (audit_enabled != AUDIT_OFF) {
rc = audit_log_config_change(function_name, new, old,
loginuid, sid, allow_changes);
rc = audit_log_config_change(function_name, new, old, loginuid,
sessionid, sid, allow_changes);
if (rc)
allow_changes = 0;
}
@ -305,26 +314,28 @@ static int audit_do_config_change(char *function_name, int *to_change,
return rc;
}
static int audit_set_rate_limit(int limit, uid_t loginuid, u32 sid)
static int audit_set_rate_limit(int limit, uid_t loginuid, u32 sessionid,
u32 sid)
{
return audit_do_config_change("audit_rate_limit", &audit_rate_limit,
limit, loginuid, sid);
limit, loginuid, sessionid, sid);
}
static int audit_set_backlog_limit(int limit, uid_t loginuid, u32 sid)
static int audit_set_backlog_limit(int limit, uid_t loginuid, u32 sessionid,
u32 sid)
{
return audit_do_config_change("audit_backlog_limit", &audit_backlog_limit,
limit, loginuid, sid);
limit, loginuid, sessionid, sid);
}
static int audit_set_enabled(int state, uid_t loginuid, u32 sid)
static int audit_set_enabled(int state, uid_t loginuid, u32 sessionid, u32 sid)
{
int rc;
if (state < AUDIT_OFF || state > AUDIT_LOCKED)
return -EINVAL;
rc = audit_do_config_change("audit_enabled", &audit_enabled, state,
loginuid, sid);
loginuid, sessionid, sid);
if (!rc)
audit_ever_enabled |= !!state;
@ -332,7 +343,7 @@ static int audit_set_enabled(int state, uid_t loginuid, u32 sid)
return rc;
}
static int audit_set_failure(int state, uid_t loginuid, u32 sid)
static int audit_set_failure(int state, uid_t loginuid, u32 sessionid, u32 sid)
{
if (state != AUDIT_FAIL_SILENT
&& state != AUDIT_FAIL_PRINTK
@ -340,7 +351,43 @@ static int audit_set_failure(int state, uid_t loginuid, u32 sid)
return -EINVAL;
return audit_do_config_change("audit_failure", &audit_failure, state,
loginuid, sid);
loginuid, sessionid, sid);
}
/*
* Queue skbs to be sent to auditd when/if it comes back. These skbs should
* already have been sent via prink/syslog and so if these messages are dropped
* it is not a huge concern since we already passed the audit_log_lost()
* notification and stuff. This is just nice to get audit messages during
* boot before auditd is running or messages generated while auditd is stopped.
* This only holds messages is audit_default is set, aka booting with audit=1
* or building your kernel that way.
*/
static void audit_hold_skb(struct sk_buff *skb)
{
if (audit_default &&
skb_queue_len(&audit_skb_hold_queue) < audit_backlog_limit)
skb_queue_tail(&audit_skb_hold_queue, skb);
else
kfree_skb(skb);
}
static void kauditd_send_skb(struct sk_buff *skb)
{
int err;
/* take a reference in case we can't send it and we want to hold it */
skb_get(skb);
err = netlink_unicast(audit_sock, skb, audit_nlk_pid, 0);
if (err < 0) {
BUG_ON(err != -ECONNREFUSED); /* Shoudn't happen */
printk(KERN_ERR "audit: *NO* daemon at audit_pid=%d\n", audit_pid);
audit_log_lost("auditd dissapeared\n");
audit_pid = 0;
/* we might get lucky and get this in the next auditd */
audit_hold_skb(skb);
} else
/* drop the extra reference if sent ok */
kfree_skb(skb);
}
static int kauditd_thread(void *dummy)
@ -349,24 +396,41 @@ static int kauditd_thread(void *dummy)
set_freezable();
while (!kthread_should_stop()) {
/*
* if auditd just started drain the queue of messages already
* sent to syslog/printk. remember loss here is ok. we already
* called audit_log_lost() if it didn't go out normally. so the
* race between the skb_dequeue and the next check for audit_pid
* doesn't matter.
*
* if you ever find kauditd to be too slow we can get a perf win
* by doing our own locking and keeping better track if there
* are messages in this queue. I don't see the need now, but
* in 5 years when I want to play with this again I'll see this
* note and still have no friggin idea what i'm thinking today.
*/
if (audit_default && audit_pid) {
skb = skb_dequeue(&audit_skb_hold_queue);
if (unlikely(skb)) {
while (skb && audit_pid) {
kauditd_send_skb(skb);
skb = skb_dequeue(&audit_skb_hold_queue);
}
}
}
skb = skb_dequeue(&audit_skb_queue);
wake_up(&audit_backlog_wait);
if (skb) {
if (audit_pid) {
int err = netlink_unicast(audit_sock, skb, audit_nlk_pid, 0);
if (err < 0) {
BUG_ON(err != -ECONNREFUSED); /* Shoudn't happen */
printk(KERN_ERR "audit: *NO* daemon at audit_pid=%d\n", audit_pid);
audit_log_lost("auditd dissapeared\n");
audit_pid = 0;
}
} else {
if (audit_pid)
kauditd_send_skb(skb);
else {
if (printk_ratelimit())
printk(KERN_NOTICE "%s\n", skb->data +
NLMSG_SPACE(0));
printk(KERN_NOTICE "%s\n", skb->data + NLMSG_SPACE(0));
else
audit_log_lost("printk limit exceeded\n");
kfree_skb(skb);
audit_hold_skb(skb);
}
} else {
DECLARE_WAITQUEUE(wait, current);
@ -385,13 +449,13 @@ static int kauditd_thread(void *dummy)
return 0;
}
static int audit_prepare_user_tty(pid_t pid, uid_t loginuid)
static int audit_prepare_user_tty(pid_t pid, uid_t loginuid, u32 sessionid)
{
struct task_struct *tsk;
int err;
read_lock(&tasklist_lock);
tsk = find_task_by_pid(pid);
tsk = find_task_by_vpid(pid);
err = -ESRCH;
if (!tsk)
goto out;
@ -404,7 +468,7 @@ static int audit_prepare_user_tty(pid_t pid, uid_t loginuid)
if (err)
goto out;
tty_audit_push_task(tsk, loginuid);
tty_audit_push_task(tsk, loginuid, sessionid);
out:
read_unlock(&tasklist_lock);
return err;
@ -469,6 +533,19 @@ nlmsg_failure: /* Used by NLMSG_PUT */
return NULL;
}
static int audit_send_reply_thread(void *arg)
{
struct audit_reply *reply = (struct audit_reply *)arg;
mutex_lock(&audit_cmd_mutex);
mutex_unlock(&audit_cmd_mutex);
/* Ignore failure. It'll only happen if the sender goes away,
because our timeout is set to infinite. */
netlink_unicast(audit_sock, reply->skb, reply->pid, 0);
kfree(reply);
return 0;
}
/**
* audit_send_reply - send an audit reply message via netlink
* @pid: process id to send reply to
@ -485,14 +562,26 @@ nlmsg_failure: /* Used by NLMSG_PUT */
void audit_send_reply(int pid, int seq, int type, int done, int multi,
void *payload, int size)
{
struct sk_buff *skb;
struct sk_buff *skb;
struct task_struct *tsk;
struct audit_reply *reply = kmalloc(sizeof(struct audit_reply),
GFP_KERNEL);
if (!reply)
return;
skb = audit_make_reply(pid, seq, type, done, multi, payload, size);
if (!skb)
return;
/* Ignore failure. It'll only happen if the sender goes away,
because our timeout is set to infinite. */
netlink_unicast(audit_sock, skb, pid, 0);
return;
reply->pid = pid;
reply->skb = skb;
tsk = kthread_run(audit_send_reply_thread, reply, "audit_send_reply");
if (IS_ERR(tsk)) {
kfree(reply);
kfree_skb(skb);
}
}
/*
@ -534,7 +623,8 @@ static int audit_netlink_ok(struct sk_buff *skb, u16 msg_type)
}
static int audit_log_common_recv_msg(struct audit_buffer **ab, u16 msg_type,
u32 pid, u32 uid, uid_t auid, u32 sid)
u32 pid, u32 uid, uid_t auid, u32 ses,
u32 sid)
{
int rc = 0;
char *ctx = NULL;
@ -546,8 +636,8 @@ static int audit_log_common_recv_msg(struct audit_buffer **ab, u16 msg_type,
}
*ab = audit_log_start(NULL, GFP_KERNEL, msg_type);
audit_log_format(*ab, "user pid=%d uid=%u auid=%u",
pid, uid, auid);
audit_log_format(*ab, "user pid=%d uid=%u auid=%u ses=%u",
pid, uid, auid, ses);
if (sid) {
rc = security_secid_to_secctx(sid, &ctx, &len);
if (rc)
@ -570,6 +660,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
struct audit_buffer *ab;
u16 msg_type = nlh->nlmsg_type;
uid_t loginuid; /* loginuid of sender */
u32 sessionid;
struct audit_sig_info *sig_data;
char *ctx = NULL;
u32 len;
@ -591,6 +682,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
pid = NETLINK_CREDS(skb)->pid;
uid = NETLINK_CREDS(skb)->uid;
loginuid = NETLINK_CB(skb).loginuid;
sessionid = NETLINK_CB(skb).sessionid;
sid = NETLINK_CB(skb).sid;
seq = nlh->nlmsg_seq;
data = NLMSG_DATA(nlh);
@ -613,12 +705,12 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
status_get = (struct audit_status *)data;
if (status_get->mask & AUDIT_STATUS_ENABLED) {
err = audit_set_enabled(status_get->enabled,
loginuid, sid);
loginuid, sessionid, sid);
if (err < 0) return err;
}
if (status_get->mask & AUDIT_STATUS_FAILURE) {
err = audit_set_failure(status_get->failure,
loginuid, sid);
loginuid, sessionid, sid);
if (err < 0) return err;
}
if (status_get->mask & AUDIT_STATUS_PID) {
@ -627,17 +719,17 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
if (audit_enabled != AUDIT_OFF)
audit_log_config_change("audit_pid", new_pid,
audit_pid, loginuid,
sid, 1);
sessionid, sid, 1);
audit_pid = new_pid;
audit_nlk_pid = NETLINK_CB(skb).pid;
}
if (status_get->mask & AUDIT_STATUS_RATE_LIMIT)
err = audit_set_rate_limit(status_get->rate_limit,
loginuid, sid);
loginuid, sessionid, sid);
if (status_get->mask & AUDIT_STATUS_BACKLOG_LIMIT)
err = audit_set_backlog_limit(status_get->backlog_limit,
loginuid, sid);
loginuid, sessionid, sid);
break;
case AUDIT_USER:
case AUDIT_FIRST_USER_MSG ... AUDIT_LAST_USER_MSG:
@ -649,12 +741,13 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
if (err == 1) {
err = 0;
if (msg_type == AUDIT_USER_TTY) {
err = audit_prepare_user_tty(pid, loginuid);
err = audit_prepare_user_tty(pid, loginuid,
sessionid);
if (err)
break;
}
audit_log_common_recv_msg(&ab, msg_type, pid, uid,
loginuid, sid);
loginuid, sessionid, sid);
if (msg_type != AUDIT_USER_TTY)
audit_log_format(ab, " msg='%.1024s'",
@ -664,8 +757,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
audit_log_format(ab, " msg=");
size = nlmsg_len(nlh);
audit_log_n_untrustedstring(ab, size,
data);
audit_log_n_untrustedstring(ab, data, size);
}
audit_set_pid(ab, pid);
audit_log_end(ab);
@ -677,7 +769,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
return -EINVAL;
if (audit_enabled == AUDIT_LOCKED) {
audit_log_common_recv_msg(&ab, AUDIT_CONFIG_CHANGE, pid,
uid, loginuid, sid);
uid, loginuid, sessionid, sid);
audit_log_format(ab, " audit_enabled=%d res=0",
audit_enabled);
@ -688,7 +780,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
case AUDIT_LIST:
err = audit_receive_filter(nlh->nlmsg_type, NETLINK_CB(skb).pid,
uid, seq, data, nlmsg_len(nlh),
loginuid, sid);
loginuid, sessionid, sid);
break;
case AUDIT_ADD_RULE:
case AUDIT_DEL_RULE:
@ -696,7 +788,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
return -EINVAL;
if (audit_enabled == AUDIT_LOCKED) {
audit_log_common_recv_msg(&ab, AUDIT_CONFIG_CHANGE, pid,
uid, loginuid, sid);
uid, loginuid, sessionid, sid);
audit_log_format(ab, " audit_enabled=%d res=0",
audit_enabled);
@ -707,13 +799,13 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
case AUDIT_LIST_RULES:
err = audit_receive_filter(nlh->nlmsg_type, NETLINK_CB(skb).pid,
uid, seq, data, nlmsg_len(nlh),
loginuid, sid);
loginuid, sessionid, sid);
break;
case AUDIT_TRIM:
audit_trim_trees();
audit_log_common_recv_msg(&ab, AUDIT_CONFIG_CHANGE, pid,
uid, loginuid, sid);
uid, loginuid, sessionid, sid);
audit_log_format(ab, " op=trim res=1");
audit_log_end(ab);
@ -721,21 +813,21 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
case AUDIT_MAKE_EQUIV: {
void *bufp = data;
u32 sizes[2];
size_t len = nlmsg_len(nlh);
size_t msglen = nlmsg_len(nlh);
char *old, *new;
err = -EINVAL;
if (len < 2 * sizeof(u32))
if (msglen < 2 * sizeof(u32))
break;
memcpy(sizes, bufp, 2 * sizeof(u32));
bufp += 2 * sizeof(u32);
len -= 2 * sizeof(u32);
old = audit_unpack_string(&bufp, &len, sizes[0]);
msglen -= 2 * sizeof(u32);
old = audit_unpack_string(&bufp, &msglen, sizes[0]);
if (IS_ERR(old)) {
err = PTR_ERR(old);
break;
}
new = audit_unpack_string(&bufp, &len, sizes[1]);
new = audit_unpack_string(&bufp, &msglen, sizes[1]);
if (IS_ERR(new)) {
err = PTR_ERR(new);
kfree(old);
@ -745,7 +837,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
err = audit_tag_tree(old, new);
audit_log_common_recv_msg(&ab, AUDIT_CONFIG_CHANGE, pid,
uid, loginuid, sid);
uid, loginuid, sessionid, sid);
audit_log_format(ab, " op=make_equiv old=");
audit_log_untrustedstring(ab, old);
@ -779,7 +871,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
struct task_struct *tsk;
read_lock(&tasklist_lock);
tsk = find_task_by_pid(pid);
tsk = find_task_by_vpid(pid);
if (!tsk)
err = -ESRCH;
else {
@ -802,7 +894,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
if (s->enabled != 0 && s->enabled != 1)
return -EINVAL;
read_lock(&tasklist_lock);
tsk = find_task_by_pid(pid);
tsk = find_task_by_vpid(pid);
if (!tsk)
err = -ESRCH;
else {
@ -877,6 +969,7 @@ static int __init audit_init(void)
audit_sock->sk_sndtimeo = MAX_SCHEDULE_TIMEOUT;
skb_queue_head_init(&audit_skb_queue);
skb_queue_head_init(&audit_skb_hold_queue);
audit_initialized = 1;
audit_enabled = audit_default;
audit_ever_enabled |= !!audit_default;
@ -1199,7 +1292,7 @@ void audit_log_format(struct audit_buffer *ab, const char *fmt, ...)
* This function will take the passed buf and convert it into a string of
* ascii hex digits. The new string is placed onto the skb.
*/
void audit_log_hex(struct audit_buffer *ab, const unsigned char *buf,
void audit_log_n_hex(struct audit_buffer *ab, const unsigned char *buf,
size_t len)
{
int i, avail, new_len;
@ -1235,8 +1328,8 @@ void audit_log_hex(struct audit_buffer *ab, const unsigned char *buf,
* Format a string of no more than slen characters into the audit buffer,
* enclosed in quote marks.
*/
static void audit_log_n_string(struct audit_buffer *ab, size_t slen,
const char *string)
void audit_log_n_string(struct audit_buffer *ab, const char *string,
size_t slen)
{
int avail, new_len;
unsigned char *ptr;
@ -1292,13 +1385,13 @@ int audit_string_contains_control(const char *string, size_t len)
* The caller specifies the number of characters in the string to log, which may
* or may not be the entire string.
*/
void audit_log_n_untrustedstring(struct audit_buffer *ab, size_t len,
const char *string)
void audit_log_n_untrustedstring(struct audit_buffer *ab, const char *string,
size_t len)
{
if (audit_string_contains_control(string, len))
audit_log_hex(ab, string, len);
audit_log_n_hex(ab, string, len);
else
audit_log_n_string(ab, len, string);
audit_log_n_string(ab, string, len);
}
/**
@ -1311,7 +1404,7 @@ void audit_log_n_untrustedstring(struct audit_buffer *ab, size_t len,
*/
void audit_log_untrustedstring(struct audit_buffer *ab, const char *string)
{
audit_log_n_untrustedstring(ab, strlen(string), string);
audit_log_n_untrustedstring(ab, string, strlen(string));
}
/* This is a helper-function to print the escaped d_path */
@ -1355,19 +1448,23 @@ void audit_log_end(struct audit_buffer *ab)
audit_log_lost("rate limit exceeded");
} else {
struct nlmsghdr *nlh = nlmsg_hdr(ab->skb);
nlh->nlmsg_len = ab->skb->len - NLMSG_SPACE(0);
if (audit_pid) {
nlh->nlmsg_len = ab->skb->len - NLMSG_SPACE(0);
skb_queue_tail(&audit_skb_queue, ab->skb);
ab->skb = NULL;
wake_up_interruptible(&kauditd_wait);
} else if (nlh->nlmsg_type != AUDIT_EOE) {
if (printk_ratelimit()) {
printk(KERN_NOTICE "type=%d %s\n",
nlh->nlmsg_type,
ab->skb->data + NLMSG_SPACE(0));
} else
audit_log_lost("printk limit exceeded\n");
} else {
if (nlh->nlmsg_type != AUDIT_EOE) {
if (printk_ratelimit()) {
printk(KERN_NOTICE "type=%d %s\n",
nlh->nlmsg_type,
ab->skb->data + NLMSG_SPACE(0));
} else
audit_log_lost("printk limit exceeded\n");
}
audit_hold_skb(ab->skb);
}
ab->skb = NULL;
}
audit_buffer_free(ab);
}

13
kernel/audit.h
View File

@ -74,6 +74,11 @@ struct audit_entry {
struct audit_krule rule;
};
#ifdef CONFIG_AUDIT
extern int audit_enabled;
extern int audit_ever_enabled;
#endif
extern int audit_pid;
#define AUDIT_INODE_BUCKETS 32
@ -104,6 +109,9 @@ struct audit_netlink_list {
int audit_send_list(void *);
struct inotify_watch;
/* Inotify handle */
extern struct inotify_handle *audit_ih;
extern void audit_free_parent(struct inotify_watch *);
extern void audit_handle_ievent(struct inotify_watch *, u32, u32, u32,
const char *, struct inode *);
@ -111,6 +119,7 @@ extern int selinux_audit_rule_update(void);
extern struct mutex audit_filter_mutex;
extern void audit_free_rule_rcu(struct rcu_head *);
extern struct list_head audit_filter_list[];
#ifdef CONFIG_AUDIT_TREE
extern struct audit_chunk *audit_tree_lookup(const struct inode *);
@ -137,6 +146,10 @@ extern void audit_put_tree(struct audit_tree *);
extern char *audit_unpack_string(void **, size_t *, size_t);
extern pid_t audit_sig_pid;
extern uid_t audit_sig_uid;
extern u32 audit_sig_sid;
#ifdef CONFIG_AUDITSYSCALL
extern int __audit_signal_info(int sig, struct task_struct *t);
static inline int audit_signal_info(int sig, struct task_struct *t)

45
kernel/auditfilter.c
View File

@ -89,14 +89,9 @@ struct list_head audit_filter_list[AUDIT_NR_FILTERS] = {
DEFINE_MUTEX(audit_filter_mutex);
/* Inotify handle */
extern struct inotify_handle *audit_ih;
/* Inotify events we care about. */
#define AUDIT_IN_WATCH IN_MOVE|IN_CREATE|IN_DELETE|IN_DELETE_SELF|IN_MOVE_SELF
extern int audit_enabled;
void audit_free_parent(struct inotify_watch *i_watch)
{
struct audit_parent *parent;
@ -422,7 +417,7 @@ exit_err:
static struct audit_entry *audit_rule_to_entry(struct audit_rule *rule)
{
struct audit_entry *entry;
struct audit_field *f;
struct audit_field *ino_f;
int err = 0;
int i;
@ -483,6 +478,10 @@ static struct audit_entry *audit_rule_to_entry(struct audit_rule *rule)
if (f->val & ~15)
goto exit_free;
break;
case AUDIT_FILETYPE:
if ((f->val & ~S_IFMT) > S_IFMT)
goto exit_free;
break;
case AUDIT_INODE:
err = audit_to_inode(&entry->rule, f);
if (err)
@ -504,9 +503,9 @@ static struct audit_entry *audit_rule_to_entry(struct audit_rule *rule)
}
}
f = entry->rule.inode_f;
if (f) {
switch(f->op) {
ino_f = entry->rule.inode_f;
if (ino_f) {
switch(ino_f->op) {
case AUDIT_NOT_EQUAL:
entry->rule.inode_f = NULL;
case AUDIT_EQUAL:
@ -531,7 +530,7 @@ static struct audit_entry *audit_data_to_entry(struct audit_rule_data *data,
{
int err = 0;
struct audit_entry *entry;
struct audit_field *f;
struct audit_field *ino_f;
void *bufp;
size_t remain = datasz - sizeof(struct audit_rule_data);
int i;
@ -654,14 +653,18 @@ static struct audit_entry *audit_data_to_entry(struct audit_rule_data *data,
if (f->val & ~15)
goto exit_free;
break;
case AUDIT_FILETYPE:
if ((f->val & ~S_IFMT) > S_IFMT)
goto exit_free;
break;
default:
goto exit_free;
}
}
f = entry->rule.inode_f;
if (f) {
switch(f->op) {
ino_f = entry->rule.inode_f;
if (ino_f) {
switch(ino_f->op) {
case AUDIT_NOT_EQUAL:
entry->rule.inode_f = NULL;
case AUDIT_EQUAL:
@ -1500,8 +1503,9 @@ static void audit_list_rules(int pid, int seq, struct sk_buff_head *q)
}
/* Log rule additions and removals */
static void audit_log_rule_change(uid_t loginuid, u32 sid, char *action,
struct audit_krule *rule, int res)
static void audit_log_rule_change(uid_t loginuid, u32 sessionid, u32 sid,
char *action, struct audit_krule *rule,
int res)
{
struct audit_buffer *ab;
@ -1511,7 +1515,7 @@ static void audit_log_rule_change(uid_t loginuid, u32 sid, char *action,
ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE);
if (!ab)
return;
audit_log_format(ab, "auid=%u", loginuid);
audit_log_format(ab, "auid=%u ses=%u", loginuid, sessionid);
if (sid) {
char *ctx = NULL;
u32 len;
@ -1543,7 +1547,7 @@ static void audit_log_rule_change(uid_t loginuid, u32 sid, char *action,
* @sid: SE Linux Security ID of sender
*/
int audit_receive_filter(int type, int pid, int uid, int seq, void *data,
size_t datasz, uid_t loginuid, u32 sid)
size_t datasz, uid_t loginuid, u32 sessionid, u32 sid)
{
struct task_struct *tsk;
struct audit_netlink_list *dest;
@ -1590,7 +1594,8 @@ int audit_receive_filter(int type, int pid, int uid, int seq, void *data,
err = audit_add_rule(entry,
&audit_filter_list[entry->rule.listnr]);
audit_log_rule_change(loginuid, sid, "add", &entry->rule, !err);
audit_log_rule_change(loginuid, sessionid, sid, "add",
&entry->rule, !err);
if (err)
audit_free_rule(entry);
@ -1606,8 +1611,8 @@ int audit_receive_filter(int type, int pid, int uid, int seq, void *data,
err = audit_del_rule(entry,
&audit_filter_list[entry->rule.listnr]);
audit_log_rule_change(loginuid, sid, "remove", &entry->rule,
!err);
audit_log_rule_change(loginuid, sessionid, sid, "remove",
&entry->rule, !err);
audit_free_rule(entry);
break;

40
kernel/auditsc.c
View File

@ -68,9 +68,6 @@
#include "audit.h"
extern struct list_head audit_filter_list[];
extern int audit_ever_enabled;
/* AUDIT_NAMES is the number of slots we reserve in the audit_context
* for saving names from getname(). */
#define AUDIT_NAMES 20
@ -283,6 +280,19 @@ static int audit_match_perm(struct audit_context *ctx, int mask)
}
}
static int audit_match_filetype(struct audit_context *ctx, int which)
{
unsigned index = which & ~S_IFMT;
mode_t mode = which & S_IFMT;
if (index >= ctx->name_count)
return 0;
if (ctx->names[index].ino == -1)
return 0;
if ((ctx->names[index].mode ^ mode) & S_IFMT)
return 0;
return 1;
}
/*
* 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.
@ -592,6 +602,9 @@ static int audit_filter_rules(struct task_struct *tsk,
case AUDIT_PERM:
result = audit_match_perm(ctx, f->val);
break;
case AUDIT_FILETYPE:
result = audit_match_filetype(ctx, f->val);
break;
}
if (!result)
@ -1095,7 +1108,7 @@ static int audit_log_single_execve_arg(struct audit_context *context,
audit_log_format(*ab, "[%d]", i);
audit_log_format(*ab, "=");
if (has_cntl)
audit_log_hex(*ab, buf, to_send);
audit_log_n_hex(*ab, buf, to_send);
else
audit_log_format(*ab, "\"%s\"", buf);
audit_log_format(*ab, "\n");
@ -1296,7 +1309,6 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
break; }
case AUDIT_SOCKETCALL: {
int i;
struct audit_aux_data_socketcall *axs = (void *)aux;
audit_log_format(ab, "nargs=%d", axs->nargs);
for (i=0; i<axs->nargs; i++)
@ -1307,7 +1319,7 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
struct audit_aux_data_sockaddr *axs = (void *)aux;
audit_log_format(ab, "saddr=");
audit_log_hex(ab, axs->a, axs->len);
audit_log_n_hex(ab, axs->a, axs->len);
break; }
case AUDIT_FD_PAIR: {
@ -1321,7 +1333,6 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
for (aux = context->aux_pids; aux; aux = aux->next) {
struct audit_aux_data_pids *axs = (void *)aux;
int i;
for (i = 0; i < axs->pid_count; i++)
if (audit_log_pid_context(context, axs->target_pid[i],
@ -1371,8 +1382,8 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
default:
/* log the name's directory component */
audit_log_format(ab, " name=");
audit_log_n_untrustedstring(ab, n->name_len,
n->name);
audit_log_n_untrustedstring(ab, n->name,
n->name_len);
}
} else
audit_log_format(ab, " name=(null)");
@ -1596,7 +1607,7 @@ static inline void handle_one(const struct inode *inode)
if (likely(put_tree_ref(context, chunk)))
return;
if (unlikely(!grow_tree_refs(context))) {
printk(KERN_WARNING "out of memory, audit has lost a tree reference");
printk(KERN_WARNING "out of memory, audit has lost a tree reference\n");
audit_set_auditable(context);
audit_put_chunk(chunk);
unroll_tree_refs(context, p, count);
@ -1656,7 +1667,7 @@ retry:
}
/* too bad */
printk(KERN_WARNING
"out of memory, audit has lost a tree reference");
"out of memory, audit has lost a tree reference\n");
unroll_tree_refs(context, p, count);
audit_set_auditable(context);
return;
@ -1752,13 +1763,13 @@ static int audit_inc_name_count(struct audit_context *context,
if (context->name_count >= AUDIT_NAMES) {
if (inode)
printk(KERN_DEBUG "name_count maxed, losing inode data: "
"dev=%02x:%02x, inode=%lu",
"dev=%02x:%02x, inode=%lu\n",
MAJOR(inode->i_sb->s_dev),
MINOR(inode->i_sb->s_dev),
inode->i_ino);
else
printk(KERN_DEBUG "name_count maxed, losing inode data");
printk(KERN_DEBUG "name_count maxed, losing inode data\n");
return 1;
}
context->name_count++;
@ -2361,9 +2372,6 @@ int __audit_signal_info(int sig, struct task_struct *t)
struct audit_aux_data_pids *axp;
struct task_struct *tsk = current;
struct audit_context *ctx = tsk->audit_context;
extern pid_t audit_sig_pid;
extern uid_t audit_sig_uid;
extern u32 audit_sig_sid;
if (audit_pid && t->tgid == audit_pid) {
if (sig == SIGTERM || sig == SIGHUP || sig == SIGUSR1) {

17
net/key/af_key.c
View File

@ -1498,7 +1498,8 @@ static int pfkey_add(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr,
err = xfrm_state_update(x);
xfrm_audit_state_add(x, err ? 0 : 1,
audit_get_loginuid(current), 0);
audit_get_loginuid(current),
audit_get_sessionid(current), 0);
if (err < 0) {
x->km.state = XFRM_STATE_DEAD;
@ -1552,7 +1553,8 @@ static int pfkey_delete(struct sock *sk, struct sk_buff *skb, struct sadb_msg *h
km_state_notify(x, &c);
out:
xfrm_audit_state_delete(x, err ? 0 : 1,
audit_get_loginuid(current), 0);
audit_get_loginuid(current),
audit_get_sessionid(current), 0);
xfrm_state_put(x);
return err;
@ -1728,6 +1730,7 @@ static int pfkey_flush(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hd
return -EINVAL;
audit_info.loginuid = audit_get_loginuid(current);
audit_info.sessionid = audit_get_sessionid(current);
audit_info.secid = 0;
err = xfrm_state_flush(proto, &audit_info);
if (err)
@ -2324,7 +2327,8 @@ static int pfkey_spdadd(struct sock *sk, struct sk_buff *skb, struct sadb_msg *h
hdr->sadb_msg_type != SADB_X_SPDUPDATE);
xfrm_audit_policy_add(xp, err ? 0 : 1,
audit_get_loginuid(current), 0);
audit_get_loginuid(current),
audit_get_sessionid(current), 0);
if (err)
goto out;
@ -2406,7 +2410,8 @@ static int pfkey_spddelete(struct sock *sk, struct sk_buff *skb, struct sadb_msg
return -ENOENT;
xfrm_audit_policy_delete(xp, err ? 0 : 1,
audit_get_loginuid(current), 0);
audit_get_loginuid(current),
audit_get_sessionid(current), 0);
if (err)
goto out;
@ -2667,7 +2672,8 @@ static int pfkey_spdget(struct sock *sk, struct sk_buff *skb, struct sadb_msg *h
if (delete) {
xfrm_audit_policy_delete(xp, err ? 0 : 1,
audit_get_loginuid(current), 0);
audit_get_loginuid(current),
audit_get_sessionid(current), 0);
if (err)
goto out;
@ -2767,6 +2773,7 @@ static int pfkey_spdflush(struct sock *sk, struct sk_buff *skb, struct sadb_msg
int err;
audit_info.loginuid = audit_get_loginuid(current);
audit_info.sessionid = audit_get_sessionid(current);
audit_info.secid = 0;
err = xfrm_policy_flush(XFRM_POLICY_TYPE_MAIN, &audit_info);
if (err)

1
net/netlabel/netlabel_unlabeled.c
View File

@ -1780,6 +1780,7 @@ int __init netlbl_unlabel_defconf(void)
* messages so don't worry to much about these values. */
security_task_getsecid(current, &audit_info.secid);
audit_info.loginuid = 0;
audit_info.sessionid = 0;
entry = kzalloc(sizeof(*entry), GFP_KERNEL);
if (entry == NULL)

4
net/netlabel/netlabel_user.c
View File

@ -107,7 +107,9 @@ struct audit_buffer *netlbl_audit_start_common(int type,
if (audit_buf == NULL)
return NULL;
audit_log_format(audit_buf, "netlabel: auid=%u", audit_info->loginuid);
audit_log_format(audit_buf, "netlabel: auid=%u ses=%u",
audit_info->loginuid,
audit_info->sessionid);
if (audit_info->secid != 0 &&
security_secid_to_secctx(audit_info->secid,

1
net/netlabel/netlabel_user.h
View File

@ -51,6 +51,7 @@ static inline void netlbl_netlink_auditinfo(struct sk_buff *skb,
{
audit_info->secid = NETLINK_CB(skb).sid;
audit_info->loginuid = NETLINK_CB(skb).loginuid;
audit_info->sessionid = NETLINK_CB(skb).sessionid;
}
/* NetLabel NETLINK I/O functions */

1
net/netlink/af_netlink.c
View File

@ -1248,6 +1248,7 @@ static int netlink_sendmsg(struct kiocb *kiocb, struct socket *sock,
NETLINK_CB(skb).pid = nlk->pid;
NETLINK_CB(skb).dst_group = dst_group;
NETLINK_CB(skb).loginuid = audit_get_loginuid(current);
NETLINK_CB(skb).sessionid = audit_get_sessionid(current);
security_task_getsecid(current, &(NETLINK_CB(skb).sid));
memcpy(NETLINK_CREDS(skb), &siocb->scm->creds, sizeof(struct ucred));

12
net/xfrm/xfrm_policy.c
View File

@ -762,6 +762,7 @@ xfrm_policy_flush_secctx_check(u8 type, struct xfrm_audit *audit_info)
if (err) {
xfrm_audit_policy_delete(pol, 0,
audit_info->loginuid,
audit_info->sessionid,
audit_info->secid);
return err;
}
@ -777,6 +778,7 @@ xfrm_policy_flush_secctx_check(u8 type, struct xfrm_audit *audit_info)
if (err) {
xfrm_audit_policy_delete(pol, 0,
audit_info->loginuid,
audit_info->sessionid,
audit_info->secid);
return err;
}
@ -819,6 +821,7 @@ int xfrm_policy_flush(u8 type, struct xfrm_audit *audit_info)
write_unlock_bh(&xfrm_policy_lock);
xfrm_audit_policy_delete(pol, 1, audit_info->loginuid,
audit_info->sessionid,
audit_info->secid);
xfrm_policy_kill(pol);
@ -841,6 +844,7 @@ int xfrm_policy_flush(u8 type, struct xfrm_audit *audit_info)
xfrm_audit_policy_delete(pol, 1,
audit_info->loginuid,
audit_info->sessionid,
audit_info->secid);
xfrm_policy_kill(pol);
killed++;
@ -2472,14 +2476,14 @@ static void xfrm_audit_common_policyinfo(struct xfrm_policy *xp,
}
void xfrm_audit_policy_add(struct xfrm_policy *xp, int result,
u32 auid, u32 secid)
uid_t auid, u32 sessionid, u32 secid)
{
struct audit_buffer *audit_buf;
audit_buf = xfrm_audit_start("SPD-add");
if (audit_buf == NULL)
return;
xfrm_audit_helper_usrinfo(auid, secid, audit_buf);
xfrm_audit_helper_usrinfo(auid, sessionid, secid, audit_buf);
audit_log_format(audit_buf, " res=%u", result);
xfrm_audit_common_policyinfo(xp, audit_buf);
audit_log_end(audit_buf);
@ -2487,14 +2491,14 @@ void xfrm_audit_policy_add(struct xfrm_policy *xp, int result,
EXPORT_SYMBOL_GPL(xfrm_audit_policy_add);
void xfrm_audit_policy_delete(struct xfrm_policy *xp, int result,
u32 auid, u32 secid)
uid_t auid, u32 sessionid, u32 secid)
{
struct audit_buffer *audit_buf;
audit_buf = xfrm_audit_start("SPD-delete");
if (audit_buf == NULL)
return;
xfrm_audit_helper_usrinfo(auid, secid, audit_buf);
xfrm_audit_helper_usrinfo(auid, sessionid, secid, audit_buf);
audit_log_format(audit_buf, " res=%u", result);
xfrm_audit_common_policyinfo(xp, audit_buf);
audit_log_end(audit_buf);

13
net/xfrm/xfrm_state.c
View File

@ -496,7 +496,8 @@ expired:
km_state_expired(x, 1, 0);
xfrm_audit_state_delete(x, err ? 0 : 1,
audit_get_loginuid(current), 0);
audit_get_loginuid(current),
audit_get_sessionid(current), 0);
out:
spin_unlock(&x->lock);
@ -603,6 +604,7 @@ xfrm_state_flush_secctx_check(u8 proto, struct xfrm_audit *audit_info)
(err = security_xfrm_state_delete(x)) != 0) {
xfrm_audit_state_delete(x, 0,
audit_info->loginuid,
audit_info->sessionid,
audit_info->secid);
return err;
}
@ -641,6 +643,7 @@ restart:
err = xfrm_state_delete(x);
xfrm_audit_state_delete(x, err ? 0 : 1,
audit_info->loginuid,
audit_info->sessionid,
audit_info->secid);
xfrm_state_put(x);
@ -2123,14 +2126,14 @@ static void xfrm_audit_helper_pktinfo(struct sk_buff *skb, u16 family,
}
void xfrm_audit_state_add(struct xfrm_state *x, int result,
u32 auid, u32 secid)
uid_t auid, u32 sessionid, u32 secid)
{
struct audit_buffer *audit_buf;
audit_buf = xfrm_audit_start("SAD-add");
if (audit_buf == NULL)
return;
xfrm_audit_helper_usrinfo(auid, secid, audit_buf);
xfrm_audit_helper_usrinfo(auid, sessionid, secid, audit_buf);
xfrm_audit_helper_sainfo(x, audit_buf);
audit_log_format(audit_buf, " res=%u", result);
audit_log_end(audit_buf);
@ -2138,14 +2141,14 @@ void xfrm_audit_state_add(struct xfrm_state *x, int result,
EXPORT_SYMBOL_GPL(xfrm_audit_state_add);
void xfrm_audit_state_delete(struct xfrm_state *x, int result,
u32 auid, u32 secid)
uid_t auid, u32 sessionid, u32 secid)
{
struct audit_buffer *audit_buf;
audit_buf = xfrm_audit_start("SAD-delete");
if (audit_buf == NULL)
return;
xfrm_audit_helper_usrinfo(auid, secid, audit_buf);
xfrm_audit_helper_usrinfo(auid, sessionid, secid, audit_buf);
xfrm_audit_helper_sainfo(x, audit_buf);
audit_log_format(audit_buf, " res=%u", result);
audit_log_end(audit_buf);

41
net/xfrm/xfrm_user.c
View File

@ -407,6 +407,9 @@ static int xfrm_add_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
struct xfrm_state *x;
int err;
struct km_event c;
uid_t loginuid = NETLINK_CB(skb).loginuid;
u32 sessionid = NETLINK_CB(skb).sessionid;
u32 sid = NETLINK_CB(skb).sid;
err = verify_newsa_info(p, attrs);
if (err)
@ -422,8 +425,7 @@ static int xfrm_add_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
else
err = xfrm_state_update(x);
xfrm_audit_state_add(x, err ? 0 : 1, NETLINK_CB(skb).loginuid,
NETLINK_CB(skb).sid);
xfrm_audit_state_add(x, err ? 0 : 1, loginuid, sessionid, sid);
if (err < 0) {
x->km.state = XFRM_STATE_DEAD;
@ -478,6 +480,9 @@ static int xfrm_del_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
int err = -ESRCH;
struct km_event c;
struct xfrm_usersa_id *p = nlmsg_data(nlh);
uid_t loginuid = NETLINK_CB(skb).loginuid;
u32 sessionid = NETLINK_CB(skb).sessionid;
u32 sid = NETLINK_CB(skb).sid;
x = xfrm_user_state_lookup(p, attrs, &err);
if (x == NULL)
@ -502,8 +507,7 @@ static int xfrm_del_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
km_state_notify(x, &c);
out:
xfrm_audit_state_delete(x, err ? 0 : 1, NETLINK_CB(skb).loginuid,
NETLINK_CB(skb).sid);
xfrm_audit_state_delete(x, err ? 0 : 1, loginuid, sessionid, sid);
xfrm_state_put(x);
return err;
}
@ -1123,6 +1127,9 @@ static int xfrm_add_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
struct km_event c;
int err;
int excl;
uid_t loginuid = NETLINK_CB(skb).loginuid;
u32 sessionid = NETLINK_CB(skb).sessionid;
u32 sid = NETLINK_CB(skb).sid;
err = verify_newpolicy_info(p);
if (err)
@ -1141,8 +1148,7 @@ static int xfrm_add_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
* a type XFRM_MSG_UPDPOLICY - JHS */
excl = nlh->nlmsg_type == XFRM_MSG_NEWPOLICY;
err = xfrm_policy_insert(p->dir, xp, excl);
xfrm_audit_policy_add(xp, err ? 0 : 1, NETLINK_CB(skb).loginuid,
NETLINK_CB(skb).sid);
xfrm_audit_policy_add(xp, err ? 0 : 1, loginuid, sessionid, sid);
if (err) {
security_xfrm_policy_free(xp->security);
@ -1371,9 +1377,12 @@ static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
NETLINK_CB(skb).pid);
}
} else {
xfrm_audit_policy_delete(xp, err ? 0 : 1,
NETLINK_CB(skb).loginuid,
NETLINK_CB(skb).sid);
uid_t loginuid = NETLINK_CB(skb).loginuid;
u32 sessionid = NETLINK_CB(skb).sessionid;
u32 sid = NETLINK_CB(skb).sid;
xfrm_audit_policy_delete(xp, err ? 0 : 1, loginuid, sessionid,
sid);
if (err != 0)
goto out;
@ -1399,6 +1408,7 @@ static int xfrm_flush_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
int err;
audit_info.loginuid = NETLINK_CB(skb).loginuid;
audit_info.sessionid = NETLINK_CB(skb).sessionid;
audit_info.secid = NETLINK_CB(skb).sid;
err = xfrm_state_flush(p->proto, &audit_info);
if (err)
@ -1546,6 +1556,7 @@ static int xfrm_flush_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
return err;
audit_info.loginuid = NETLINK_CB(skb).loginuid;
audit_info.sessionid = NETLINK_CB(skb).sessionid;
audit_info.secid = NETLINK_CB(skb).sid;
err = xfrm_policy_flush(type, &audit_info);
if (err)
@ -1604,9 +1615,11 @@ static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
read_unlock(&xp->lock);
err = 0;
if (up->hard) {
uid_t loginuid = NETLINK_CB(skb).loginuid;
uid_t sessionid = NETLINK_CB(skb).sessionid;
u32 sid = NETLINK_CB(skb).sid;
xfrm_policy_delete(xp, p->dir);
xfrm_audit_policy_delete(xp, 1, NETLINK_CB(skb).loginuid,
NETLINK_CB(skb).sid);
xfrm_audit_policy_delete(xp, 1, loginuid, sessionid, sid);
} else {
// reset the timers here?
@ -1640,9 +1653,11 @@ static int xfrm_add_sa_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
km_state_expired(x, ue->hard, current->pid);
if (ue->hard) {
uid_t loginuid = NETLINK_CB(skb).loginuid;
uid_t sessionid = NETLINK_CB(skb).sessionid;
u32 sid = NETLINK_CB(skb).sid;
__xfrm_state_delete(x);
xfrm_audit_state_delete(x, 1, NETLINK_CB(skb).loginuid,
NETLINK_CB(skb).sid);
xfrm_audit_state_delete(x, 1, loginuid, sessionid, sid);
}
err = 0;
out:

2
security/selinux/avc.c
View File

@ -646,7 +646,7 @@ void avc_audit(u32 ssid, u32 tsid,
if (*p)
audit_log_untrustedstring(ab, p);
else
audit_log_hex(ab, p, len);
audit_log_n_hex(ab, p, len);
break;
}
}

2
security/smack/smackfs.c
View File

@ -324,6 +324,7 @@ static void smk_cipso_doi(void)
struct netlbl_audit audit_info;
audit_info.loginuid = audit_get_loginuid(current);
audit_info.sessionid = audit_get_sessionid(current);
audit_info.secid = smack_to_secid(current->security);
rc = netlbl_cfg_map_del(NULL, &audit_info);
@ -356,6 +357,7 @@ static void smk_unlbl_ambient(char *oldambient)
struct netlbl_audit audit_info;
audit_info.loginuid = audit_get_loginuid(current);
audit_info.sessionid = audit_get_sessionid(current);
audit_info.secid = smack_to_secid(current->security);
if (oldambient != NULL) {