[PATCH 00/18] xfrm: Add compat layer
by Dmitry Safonov
Due to some historical mistake, xfrm User ABI differ between native and
compatible applications. The difference is in structures paddings and in
the result in the size of netlink messages.
As it's already visible ABI, it cannot be adjusted by packing structures.
Possibility for compatible application to manage xfrm tunnels was
disabled by: the commmit 19d7df69fdb2 ("xfrm: Refuse to insert 32 bit
userspace socket policies on 64 bit systems") and the commit 74005991b78a
("xfrm: Do not parse 32bits compiled xfrm netlink msg on 64bits host").
By some wonderful reasons and brilliant architecture decisions for
creating userspace, on Arista switches we still use 32-bit userspace
with 64-bit kernel. There is slow movement to full 64-bit build, but
it's not yet here. As the switches need support for ipsec tunnels, the
local kernel has reverted mentioned patches that disable xfrm for
compat apps. On the top of that there is a bunch of disgraceful hacks
in userspace to work around the size check for netlink messages
and all that jazz.
It looks like, we're not the only desirable users of compatible xfrm,
there were a couple of attempts to make it work:
https://lkml.org/lkml/2017/1/20/733
https://patchwork.ozlabs.org/patch/44600/
http://netdev.vger.kernel.narkive.com/2Gesykj6/patch-net-next-xfrm-correc...
All the discussions end in the conclusion that xfrm should have a full
compatible layer to correctly work with 32-bit applications on 64-bit
kernels:
https://lkml.org/lkml/2017/1/23/413
https://patchwork.ozlabs.org/patch/433279/
In some recent lkml discussion, Linus said that it's worth to fix this
problem and not giving people an excuse to stay on 32-bit kernel:
https://lkml.org/lkml/2018/2/13/752
So, here I add a compatible layer to xfrm.
As xfrm uses netlink notifications, kernel should send them in ABI
format that an application will parse. The proposed solution is
to save the ABI of bind() syscall. The realization detail is
to create kernel-hidden, non visible to userspace netlink groups
for compat applications.
The first two patches simplify ifdeffery, and while I've already submitted
them a while ago, I'm resending them for completeness:
https://lore.kernel.org/lkml/20180717005004.25984-1-dima@arista.com/T/#u
There is also an exhaustive selftest for ipsec tunnels and to check
that kernel parses correctly the structures those differ in size.
It doesn't depend on any library and compat version can be easy
build with: make CFLAGS=-m32 net/ipsec
Cc: "David S. Miller" <davem(a)davemloft.net>
Cc: Herbert Xu <herbert(a)gondor.apana.org.au>
Cc: Steffen Klassert <steffen.klassert(a)secunet.com>
Cc: Dmitry Safonov <0x7f454c46(a)gmail.com>
Cc: netdev(a)vger.kernel.org
Dmitry Safonov (18):
x86/compat: Adjust in_compat_syscall() to generic code under !COMPAT
compat: Cleanup in_compat_syscall() callers
selftest/net/xfrm: Add test for ipsec tunnel
net/xfrm: Add _packed types for compat users
net/xfrm: Parse userspi_info{,_packed} depending on syscall
netlink: Do not subscribe to non-existent groups
netlink: Pass groups pointer to .bind()
xfrm: Add in-kernel groups for compat notifications
xfrm: Dump usersa_info in compat/native formats
xfrm: Send state notifications in compat format too
xfrm: Add compat support for xfrm_user_expire messages
xfrm: Add compat support for xfrm_userpolicy_info messages
xfrm: Add compat support for xfrm_user_acquire messages
xfrm: Add compat support for xfrm_user_polexpire messages
xfrm: Check compat acquire listeners in xfrm_is_alive()
xfrm: Notify compat listeners about policy flush
xfrm: Notify compat listeners about state flush
xfrm: Enable compat syscalls
MAINTAINERS | 1 +
arch/x86/include/asm/compat.h | 9 +-
arch/x86/include/asm/ftrace.h | 4 +-
arch/x86/kernel/process_64.c | 4 +-
arch/x86/kernel/sys_x86_64.c | 11 +-
arch/x86/mm/hugetlbpage.c | 4 +-
arch/x86/mm/mmap.c | 2 +-
drivers/firmware/efi/efivars.c | 16 +-
include/linux/compat.h | 4 +-
include/linux/netlink.h | 2 +-
include/net/xfrm.h | 14 -
kernel/audit.c | 2 +-
kernel/time/time.c | 2 +-
net/core/rtnetlink.c | 14 +-
net/core/sock_diag.c | 25 +-
net/netfilter/nfnetlink.c | 24 +-
net/netlink/af_netlink.c | 28 +-
net/netlink/af_netlink.h | 4 +-
net/netlink/genetlink.c | 26 +-
net/xfrm/xfrm_state.c | 5 -
net/xfrm/xfrm_user.c | 690 ++++++++---
tools/testing/selftests/net/.gitignore | 1 +
tools/testing/selftests/net/Makefile | 1 +
tools/testing/selftests/net/ipsec.c | 1987 ++++++++++++++++++++++++++++++++
24 files changed, 2612 insertions(+), 268 deletions(-)
create mode 100644 tools/testing/selftests/net/ipsec.c
--
2.13.6
6 years, 3 months
[PATCH] audit: fix potential null dereference 'context->module.name'
by Yi Wang
The variable 'context->module.name' may be null pointer when
kmalloc return null, so it's better to check it before using
to avoid null dereference.
Signed-off-by: Yi Wang <wang.yi59(a)zte.com.cn>
Reviewed-by: Jiang Biao <jiang.biao2(a)zte.com.cn>
---
kernel/auditsc.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index e80459f..4830b83 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -1272,8 +1272,12 @@ static void show_special(struct audit_context *context, int *call_panic)
break;
case AUDIT_KERN_MODULE:
audit_log_format(ab, "name=");
- audit_log_untrustedstring(ab, context->module.name);
- kfree(context->module.name);
+ if (context->module.name) {
+ audit_log_untrustedstring(ab, context->module.name);
+ kfree(context->module.name);
+ } else
+ audit_log_format(ab, "(null)");
+
break;
}
audit_log_end(ab);
@@ -2409,7 +2413,8 @@ void __audit_log_kern_module(char *name)
struct audit_context *context = current->audit_context;
context->module.name = kmalloc(strlen(name) + 1, GFP_KERNEL);
- strcpy(context->module.name, name);
+ if (context->module.name)
+ strcpy(context->module.name, name);
context->type = AUDIT_KERN_MODULE;
}
--
1.8.3.1
6 years, 3 months
[RFC PATCH ghak59 V1 0/6] audit: config_change normalizations and event record gathering
by Richard Guy Briggs
Make a number of changes to normalize CONFIG_CHANGE records by adding
missing op= fields, providing more information in existing op fields and
connecting all records to existing audit events.
The user record patch is included but is *optional* since there is doubt
that we want to disconnect the records from a single event.
Since tree purge records are processed after the EOE record is produced,
the order of operation of the EOE record and the purge will have to be
reversed so that the purge records can be included in the event.
Could I get some feedback on the format of the op field values
themselves? They shouldn't cause any text processing headaches but
there may be a better way of expressing them.
For reference, here are the calling methods and function tree for all
CONFIG_CHANGE events:
- audit_log_config_change() "op=set"
- AUDIT_SET:AUDIT_STATUS_PID
- AUDIT_SET:AUDIT_STATUS_LOST
- audit_do_config_change()
- AUDIT_SET:AUDIT_STATUS_FAILURE
- AUDIT_SET:AUDIT_STATUS_ENABLED
- AUDIT_SET:AUDIT_STATUS_RATE_LIMIT
- AUDIT_SET:AUDIT_STATUS_BACKLOG_LIMIT
- AUDIT_SET:AUDIT_STATUS_BACKLOG_WAIT_TIME
- audit_log_common_recv_msg()
- AUDIT_*USER* events (not CONFIG_CHANGE like all the rest)
- AUDIT_LOCKED "op=%s_rule"(add/remove)
- AUDIT_TRIM "op=trim"
- AUDIT_MAKE_EQUIV: "op=make_equiv"
- AUDIT_TTY_SET: "op=tty_set"
- audit_log_rule_change()
- AUDIT_ADD_RULE -F dir=:
- AUDIT_DEL_RULE -F dir=:
- audit_mark_log_rule_change()
- audit_autoremove_mark_rule() "op=autoremove_rule(mark)"
- audit_mark_handle_event()
- audit_mark_fsnotify_ops.handle_event
- audit_tree_log_remove_rule() "op=remove_rule(tree:%s)" from kill_rules()
- from trim_marked()
- AUDIT_TRIM: audit_trim_trees() "trim"
- audit_add_tree_rule() iterate_mounts err "add"
- audit_add_rule()
- audit_rule_change()
- AUDIT_ADD_RULE -F dir=:
- AUDIT_MAKE_EQUIV: audit_tag_tree() iterate_mounts err "equiv"
- from audit_kill_trees()
- __audit_free() "free"
- do_exit()
- copy_process() err
- __audit_syscall_exit() "exit"
- from evict_chunk() "evict"
- audit_tree_freeing_mark()
- audit_tree_ops.freeing_mark
- audit_watch_log_rule_change()
- audit_update_watch() "updated_rules(watch:inval)" : "updated_rules(watch:set)"
- audit_watch_handle_event() FS_CREATE|FS_MOVED_TO, FS_DELETE|FS_MOVED_FROM
- audit_watch_fsnotify_ops.handle_event
- audit_remove_parent_watches() "remove_rule(watch:parent)"
- audit_watch_handle_event() FS_DELETE_SELF|FS_UNMOUNT|FS_MOVE_SELF
- audit_watch_fsnotify_ops.handle_event
See: https://github.com/linux-audit/audit-kernel/issues/50
See: https://github.com/linux-audit/audit-kernel/issues/59
Richard Guy Briggs (6):
audit: give a clue what CONFIG_CHANGE op was involved
audit: add syscall information to CONFIG_CHANGE records
audit: exclude user records from syscall context
audit: hand taken context to audit_kill_trees for syscall logging
audit: move EOE record after kill_trees for exit/free
audit: extend config_change mark/watch/tree rule changes
kernel/audit.c | 20 ++++++++++++++------
kernel/audit.h | 4 ++--
kernel/audit_fsnotify.c | 4 ++--
kernel/audit_tree.c | 28 +++++++++++++++-------------
kernel/audit_watch.c | 8 +++++---
kernel/auditfilter.c | 2 +-
kernel/auditsc.c | 26 ++++++++++++++++++--------
7 files changed, 57 insertions(+), 35 deletions(-)
--
1.8.3.1
6 years, 3 months
[RFC PATCH] audit: use current whenever possible
by Paul Moore
There are many places, notably audit_log_task_info() and
audit_log_exit(), that take task_struct pointers but in reality they
are always working on the current task. This patch eliminates the
task_struct arguments and uses current directly which allows a number
of cleanups as well.
Signed-off-by: Paul Moore <paul(a)paul-moore.com>
---
drivers/tty/tty_audit.c | 13 ++--
include/linux/audit.h | 6 +-
kernel/audit.c | 34 +++++------
kernel/audit.h | 2 -
kernel/auditsc.c | 118 +++++++++++++++++---------------------
security/integrity/ima/ima_api.c | 2 -
6 files changed, 81 insertions(+), 94 deletions(-)
diff --git a/drivers/tty/tty_audit.c b/drivers/tty/tty_audit.c
index 50f567b6a66e..28f87fd6a28e 100644
--- a/drivers/tty/tty_audit.c
+++ b/drivers/tty/tty_audit.c
@@ -61,20 +61,19 @@ static void tty_audit_log(const char *description, dev_t dev,
unsigned char *data, size_t size)
{
struct audit_buffer *ab;
- struct task_struct *tsk = current;
- pid_t pid = task_pid_nr(tsk);
- uid_t uid = from_kuid(&init_user_ns, task_uid(tsk));
- uid_t loginuid = from_kuid(&init_user_ns, audit_get_loginuid(tsk));
- unsigned int sessionid = audit_get_sessionid(tsk);
+ pid_t pid = task_pid_nr(current);
+ uid_t uid = from_kuid(&init_user_ns, task_uid(current));
+ uid_t loginuid = from_kuid(&init_user_ns, audit_get_loginuid(current));
+ unsigned int sessionid = audit_get_sessionid(current);
ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_TTY);
if (ab) {
- char name[sizeof(tsk->comm)];
+ char name[sizeof(current->comm)];
audit_log_format(ab, "%s pid=%u uid=%u auid=%u ses=%u major=%d"
" minor=%d comm=", description, pid, uid,
loginuid, sessionid, MAJOR(dev), MINOR(dev));
- get_task_comm(name, tsk);
+ get_task_comm(name, current);
audit_log_untrustedstring(ab, name);
audit_log_format(ab, " data=");
audit_log_n_hex(ab, data, size);
diff --git a/include/linux/audit.h b/include/linux/audit.h
index 9334fbef7bae..108dd9706a30 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -153,8 +153,7 @@ extern void audit_log_link_denied(const char *operation);
extern void audit_log_lost(const char *message);
extern int audit_log_task_context(struct audit_buffer *ab);
-extern void audit_log_task_info(struct audit_buffer *ab,
- struct task_struct *tsk);
+extern void audit_log_task_info(struct audit_buffer *ab);
extern int audit_update_lsm_rules(void);
@@ -202,8 +201,7 @@ static inline int audit_log_task_context(struct audit_buffer *ab)
{
return 0;
}
-static inline void audit_log_task_info(struct audit_buffer *ab,
- struct task_struct *tsk)
+static inline void audit_log_task_info(struct audit_buffer *ab)
{ }
#define audit_enabled AUDIT_OFF
#endif /* CONFIG_AUDIT */
diff --git a/kernel/audit.c b/kernel/audit.c
index 2a8058764aa6..160144f7e5f9 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -1096,10 +1096,11 @@ static void audit_log_feature_change(int which, u32 old_feature, u32 new_feature
if (audit_enabled == AUDIT_OFF)
return;
+
ab = audit_log_start(audit_context(), GFP_KERNEL, AUDIT_FEATURE_CHANGE);
if (!ab)
return;
- audit_log_task_info(ab, current);
+ audit_log_task_info(ab);
audit_log_format(ab, " feature=%s old=%u new=%u old_lock=%u new_lock=%u res=%d",
audit_feature_names[which], !!old_feature, !!new_feature,
!!old_lock, !!new_lock, res);
@@ -2247,15 +2248,15 @@ void audit_log_d_path_exe(struct audit_buffer *ab,
audit_log_format(ab, " exe=(null)");
}
-struct tty_struct *audit_get_tty(struct task_struct *tsk)
+struct tty_struct *audit_get_tty(void)
{
struct tty_struct *tty = NULL;
unsigned long flags;
- spin_lock_irqsave(&tsk->sighand->siglock, flags);
- if (tsk->signal)
- tty = tty_kref_get(tsk->signal->tty);
- spin_unlock_irqrestore(&tsk->sighand->siglock, flags);
+ spin_lock_irqsave(¤t->sighand->siglock, flags);
+ if (current->signal)
+ tty = tty_kref_get(current->signal->tty);
+ spin_unlock_irqrestore(¤t->sighand->siglock, flags);
return tty;
}
@@ -2264,25 +2265,24 @@ void audit_put_tty(struct tty_struct *tty)
tty_kref_put(tty);
}
-void audit_log_task_info(struct audit_buffer *ab, struct task_struct *tsk)
+void audit_log_task_info(struct audit_buffer *ab)
{
const struct cred *cred;
- char comm[sizeof(tsk->comm)];
+ char comm[sizeof(current->comm)];
struct tty_struct *tty;
if (!ab)
return;
- /* tsk == current */
cred = current_cred();
- tty = audit_get_tty(tsk);
+ tty = audit_get_tty();
audit_log_format(ab,
" ppid=%d pid=%d auid=%u uid=%u gid=%u"
" euid=%u suid=%u fsuid=%u"
" egid=%u sgid=%u fsgid=%u tty=%s ses=%u",
- task_ppid_nr(tsk),
- task_tgid_nr(tsk),
- from_kuid(&init_user_ns, audit_get_loginuid(tsk)),
+ task_ppid_nr(current),
+ task_tgid_nr(current),
+ from_kuid(&init_user_ns, audit_get_loginuid(current)),
from_kuid(&init_user_ns, cred->uid),
from_kgid(&init_user_ns, cred->gid),
from_kuid(&init_user_ns, cred->euid),
@@ -2292,11 +2292,11 @@ void audit_log_task_info(struct audit_buffer *ab, struct task_struct *tsk)
from_kgid(&init_user_ns, cred->sgid),
from_kgid(&init_user_ns, cred->fsgid),
tty ? tty_name(tty) : "(none)",
- audit_get_sessionid(tsk));
+ audit_get_sessionid(current));
audit_put_tty(tty);
audit_log_format(ab, " comm=");
- audit_log_untrustedstring(ab, get_task_comm(comm, tsk));
- audit_log_d_path_exe(ab, tsk->mm);
+ audit_log_untrustedstring(ab, get_task_comm(comm, current));
+ audit_log_d_path_exe(ab, current->mm);
audit_log_task_context(ab);
}
EXPORT_SYMBOL(audit_log_task_info);
@@ -2317,7 +2317,7 @@ void audit_log_link_denied(const char *operation)
if (!ab)
return;
audit_log_format(ab, "op=%s", operation);
- audit_log_task_info(ab, current);
+ audit_log_task_info(ab);
audit_log_format(ab, " res=0");
audit_log_end(ab);
}
diff --git a/kernel/audit.h b/kernel/audit.h
index 214e14948370..9c76b7a6e956 100644
--- a/kernel/audit.h
+++ b/kernel/audit.h
@@ -262,7 +262,7 @@ extern struct audit_entry *audit_dupe_rule(struct audit_krule *old);
extern void audit_log_d_path_exe(struct audit_buffer *ab,
struct mm_struct *mm);
-extern struct tty_struct *audit_get_tty(struct task_struct *tsk);
+extern struct tty_struct *audit_get_tty(void);
extern void audit_put_tty(struct tty_struct *tty);
/* audit watch functions */
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index fb207466e99b..8b12e525306e 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -836,44 +836,6 @@ void audit_filter_inodes(struct task_struct *tsk, struct audit_context *ctx)
rcu_read_unlock();
}
-/* Transfer the audit context pointer to the caller, clearing it in the tsk's struct */
-static inline struct audit_context *audit_take_context(struct task_struct *tsk,
- int return_valid,
- long return_code)
-{
- struct audit_context *context = tsk->audit_context;
-
- if (!context)
- return NULL;
- context->return_valid = return_valid;
-
- /*
- * 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;
-
- if (context->in_syscall && !context->dummy) {
- audit_filter_syscall(tsk, context, &audit_filter_list[AUDIT_FILTER_EXIT]);
- audit_filter_inodes(tsk, context);
- }
-
- audit_set_context(tsk, NULL);
- return context;
-}
-
static inline void audit_proctitle_free(struct audit_context *context)
{
kfree(context->proctitle.value);
@@ -1298,15 +1260,18 @@ static inline int audit_proctitle_rtrim(char *proctitle, int len)
return len;
}
-static void audit_log_proctitle(struct task_struct *tsk,
- struct audit_context *context)
+static void audit_log_proctitle(void)
{
int res;
char *buf;
char *msg = "(null)";
int len = strlen(msg);
+ struct audit_context *context = audit_context();
struct audit_buffer *ab;
+ if (!context)
+ return;
+
ab = audit_log_start(context, GFP_KERNEL, AUDIT_PROCTITLE);
if (!ab)
return; /* audit_panic or being filtered */
@@ -1319,7 +1284,7 @@ static void audit_log_proctitle(struct task_struct *tsk,
if (!buf)
goto out;
/* Historically called this from procfs naming */
- res = get_cmdline(tsk, buf, MAX_PROCTITLE_AUDIT_LEN);
+ res = get_cmdline(current, buf, MAX_PROCTITLE_AUDIT_LEN);
if (res == 0) {
kfree(buf);
goto out;
@@ -1339,15 +1304,39 @@ static void audit_log_proctitle(struct task_struct *tsk,
audit_log_end(ab);
}
-static void audit_log_exit(struct audit_context *context, struct task_struct *tsk)
+static void audit_log_exit(int ret_valid, long ret_code)
{
int i, call_panic = 0;
+ struct audit_context *context = audit_context();
struct audit_buffer *ab;
struct audit_aux_data *aux;
struct audit_names *n;
- /* tsk == current */
- context->personality = tsk->personality;
+ context->personality = current->personality;
+ context->return_valid = ret_valid;
+
+ /*
+ * 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(ret_code <= -ERESTARTSYS) &&
+ (ret_code >= -ERESTART_RESTARTBLOCK) &&
+ (ret_code != -ENOIOCTLCMD))
+ ret_code = -EINTR;
+ context->return_code = ret_code;
+
+ if (context->in_syscall && !context->dummy) {
+ audit_filter_syscall(current, context,
+ &audit_filter_list[AUDIT_FILTER_EXIT]);
+ audit_filter_inodes(current, context);
+ }
ab = audit_log_start(context, GFP_KERNEL, AUDIT_SYSCALL);
if (!ab)
@@ -1356,10 +1345,10 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
context->arch, context->major);
if (context->personality != PER_LINUX)
audit_log_format(ab, " per=%lx", context->personality);
- if (context->return_valid)
+ if (ret_valid)
audit_log_format(ab, " success=%s exit=%ld",
- (context->return_valid==AUDITSC_SUCCESS)?"yes":"no",
- context->return_code);
+ (ret_valid == AUDITSC_SUCCESS) ? "yes" : "no",
+ ret_code);
audit_log_format(ab,
" a0=%lx a1=%lx a2=%lx a3=%lx items=%d",
@@ -1369,7 +1358,7 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
context->argv[3],
context->name_count);
- audit_log_task_info(ab, tsk);
+ audit_log_task_info(ab);
audit_log_key(ab, context->filterkey);
audit_log_end(ab);
@@ -1458,7 +1447,7 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
audit_log_name(context, n, NULL, i++, &call_panic);
}
- audit_log_proctitle(tsk, context);
+ audit_log_proctitle();
/* Send end of event record to help user space know we are finished */
ab = audit_log_start(context, GFP_KERNEL, AUDIT_EOE);
@@ -1478,20 +1467,23 @@ void __audit_free(struct task_struct *tsk)
{
struct audit_context *context;
- context = audit_take_context(tsk, 0, 0);
+ context = tsk->audit_context;
if (!context)
return;
- /* Check for system calls that do not go through the exit
- * function (e.g., exit_group), then free context block.
- * We use GFP_ATOMIC here because we might be doing this
- * in the context of the idle thread */
- /* that can happen only if we are called from do_exit() */
- if (context->in_syscall && context->current_state == AUDIT_RECORD_CONTEXT)
- audit_log_exit(context, tsk);
+ /* 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->in_syscall &&
+ context->current_state == AUDIT_RECORD_CONTEXT)
+ audit_log_exit(0, 0);
+
if (!list_empty(&context->killed_trees))
audit_kill_trees(&context->killed_trees);
+ audit_set_context(tsk, NULL);
audit_free_context(context);
}
@@ -1566,12 +1558,12 @@ void __audit_syscall_exit(int success, long return_code)
else
success = AUDITSC_FAILURE;
- context = audit_take_context(current, success, return_code);
+ context = audit_context();
if (!context)
return;
if (context->in_syscall && context->current_state == AUDIT_RECORD_CONTEXT)
- audit_log_exit(context, current);
+ audit_log_exit(success, return_code);
context->in_syscall = 0;
context->prio = context->state == AUDIT_RECORD_CONTEXT ? ~0ULL : 0;
@@ -1593,7 +1585,6 @@ void __audit_syscall_exit(int success, long return_code)
kfree(context->filterkey);
context->filterkey = NULL;
}
- audit_set_context(current, context);
}
static inline void handle_one(const struct inode *inode)
@@ -2031,7 +2022,7 @@ static void audit_log_set_loginuid(kuid_t koldloginuid, kuid_t kloginuid,
uid = from_kuid(&init_user_ns, task_uid(current));
oldloginuid = from_kuid(&init_user_ns, koldloginuid);
loginuid = from_kuid(&init_user_ns, kloginuid),
- tty = audit_get_tty(current);
+ tty = audit_get_tty();
audit_log_format(ab, "pid=%d uid=%u", task_tgid_nr(current), uid);
audit_log_task_context(ab);
@@ -2052,7 +2043,6 @@ static void audit_log_set_loginuid(kuid_t koldloginuid, kuid_t kloginuid,
*/
int audit_set_loginuid(kuid_t loginuid)
{
- struct task_struct *task = current;
unsigned int oldsessionid, sessionid = AUDIT_SID_UNSET;
kuid_t oldloginuid;
int rc;
@@ -2071,8 +2061,8 @@ int audit_set_loginuid(kuid_t loginuid)
sessionid = (unsigned int)atomic_inc_return(&session_id);
}
- task->sessionid = sessionid;
- task->loginuid = loginuid;
+ current->sessionid = sessionid;
+ current->loginuid = loginuid;
out:
audit_log_set_loginuid(oldloginuid, loginuid, oldsessionid, sessionid, rc);
return rc;
diff --git a/security/integrity/ima/ima_api.c b/security/integrity/ima/ima_api.c
index a02c5acfd403..30999169c0a8 100644
--- a/security/integrity/ima/ima_api.c
+++ b/security/integrity/ima/ima_api.c
@@ -335,7 +335,7 @@ void ima_audit_measurement(struct integrity_iint_cache *iint,
audit_log_untrustedstring(ab, filename);
audit_log_format(ab, " hash=\"%s:%s\"", algo_name, hash);
- audit_log_task_info(ab, current);
+ audit_log_task_info(ab);
audit_log_end(ab);
iint->flags |= IMA_AUDITED;
6 years, 3 months
[PATCH v2] rfkill: fix spelling mistake contidion to condition
by Richard Guy Briggs
This came about while trying to determine if there would be any pattern
match on contid, a new audit container identifier internal variable.
This was the only one.
Signed-off-by: Richard Guy Briggs <rgb(a)redhat.com>
---
net/rfkill/core.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index a7a4e6f..3aab053 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c
@@ -508,8 +508,8 @@ void rfkill_remove_epo_lock(void)
/**
* rfkill_is_epo_lock_active - returns true EPO is active
*
- * Returns 0 (false) if there is NOT an active EPO contidion,
- * and 1 (true) if there is an active EPO contition, which
+ * Returns 0 (false) if there is NOT an active EPO condition,
+ * and 1 (true) if there is an active EPO condition, which
* locks all radios in one of the BLOCKED states.
*
* Can be called in atomic context.
--
1.8.3.1
6 years, 3 months
[PATCH] rfkill: fix spelling mistake contidion to condition
by Richard Guy Briggs
This came about while trying to determine if there would be any pattern
match on contid, a new audit container identifier internal variable.
Thsi was the only one.
Signed-off-by: Richard Guy Briggs <rgb(a)redhat.com>
---
net/rfkill/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index 59d0eb9..e89a009 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c
@@ -494,7 +494,7 @@ void rfkill_remove_epo_lock(void)
/**
* rfkill_is_epo_lock_active - returns true EPO is active
*
- * Returns 0 (false) if there is NOT an active EPO contidion,
+ * Returns 0 (false) if there is NOT an active EPO condition,
* and 1 (true) if there is an active EPO contition, which
* locks all radios in one of the BLOCKED states.
*
--
1.8.3.1
6 years, 3 months
[RFC PATCH ghak10 v3 0/3] audit: Log modifying adjtimex(2) calls
by Ondrej Mosnacek
I tried to implement separate records for each variable as suggested by
Richard and it turned out to be quite straightforward and results in
more compact and readable records (even though there is now a bit more
of them).
Changes in v3:
- Switched to separate records for each variable
- Both old and new value is now reported for each change
- Injecting offset is reported via a separate record (since this
offset consists of two values and is added directly to the clock,
i.e. it doesn't make sense to log old and new value)
- Added example records produced by chronyd -q (see the commit message
of the last patch)
Changes in v2:
- The audit_adjtime() function has been modified to only log those
fields that contain values that are actually used, resulting in more
compact records.
- The audit_adjtime() call has been moved to do_adjtimex() in
timekeeping.c
- Added an additional patch (for review) that simplifies the detection
if the syscall is read-only.
6 years, 3 months
Audit-3.0 pre-release available
by Steve Grubb
Hello,
This is to let everyone know that an audit-3.0 pre-release is being made.
The big change that is prompting this email is that there is a config change
that people might need to be aware of. One of the improvements is to drop
audispd (realtime audit event dispatcher) and merge its functionality into
auditd. This will eliminate one source of overflow messages and decrease the
time from event occurrence to plugin seeing it. But since audispd doesn't
exist anymore, I think that the location for the plugin directory should be
moved from /etc/audisp/plugins.d/ to /etc/audit/plugins.d/. This way we have
all audit config items in one place for the first time. There is a config
option to point auditd to another directory for plugins in case you want to
use the old location.
I have already coordinated this with some selinux developers. They are moving
the selinux troubleshooter plugin and adjusting selinux policy for the new
locations and label transitions from auditd to the plugins. I don't know how
many people beyond those I have contacted makes use of the audit dispatcher
plugin capabilities for real time audit analysis. But that is why I'm doing a
pre-release and making this announcement.
You can find the pre-release here:
http://people.redhat.com/sgrubb/audit/audit-3.0-alpha.tar.gz
Its sha256 hash is:
5c6bd356dfd8f2f6a35df35a8cd5138bd511413ee03d56076b47dc120f406dbf
I will be blogging about the new capabilities in the coming weeks. If you are
inclined, give it a try. There are changes that packagers will need to make
to accommodate the move from audisp to auditd directly handling plugins. I
have also pushed this into Fedora's rawhide and it should be available on the
next compose.
Thanks,
-Steve
6 years, 3 months
