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sanitize audit_fd_pair()

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* no allocations
* return void

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2008-12-14 04:57:47 -05:00
parent 564f6993ff
commit 157cf649a7
4 changed files with 20 additions and 49 deletions
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44
kernel/auditsc.c
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@ -131,11 +131,6 @@ struct audit_aux_data_execve {
struct mm_struct *mm;
};
struct audit_aux_data_fd_pair {
struct audit_aux_data d;
int fd[2];
};
struct audit_aux_data_pids {
struct audit_aux_data d;
pid_t target_pid[AUDIT_AUX_PIDS];
@ -241,6 +236,7 @@ struct audit_context {
struct mq_attr attr;
} mq_open;
};
int fds[2];
#if AUDIT_DEBUG
int put_count;
@ -1382,11 +1378,6 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
audit_log_execve_info(context, &ab, axi);
break; }
case AUDIT_FD_PAIR: {
struct audit_aux_data_fd_pair *axs = (void *)aux;
audit_log_format(ab, "fd0=%d fd1=%d", axs->fd[0], axs->fd[1]);
break; }
case AUDIT_BPRM_FCAPS: {
struct audit_aux_data_bprm_fcaps *axs = (void *)aux;
audit_log_format(ab, "fver=%x", axs->fcap_ver);
@ -1416,6 +1407,15 @@ static void audit_log_exit(struct audit_context *context, struct task_struct *ts
if (context->type)
show_special(context, &call_panic);
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);
}
}
if (context->sockaddr_len) {
ab = audit_log_start(context, GFP_KERNEL, AUDIT_SOCKADDR);
if (ab) {
@ -1696,6 +1696,7 @@ void audit_syscall_exit(int valid, long return_code)
context->target_sid = 0;
context->sockaddr_len = 0;
context->type = 0;
context->fds[0] = -1;
kfree(context->filterkey);
context->filterkey = NULL;
tsk->audit_context = context;
@ -2291,29 +2292,12 @@ void audit_socketcall(int nargs, unsigned long *args)
* @fd1: the first file descriptor
* @fd2: the second file descriptor
*
* Returns 0 for success or NULL context or < 0 on error.
*/
int __audit_fd_pair(int fd1, int fd2)
void __audit_fd_pair(int fd1, int fd2)
{
struct audit_context *context = current->audit_context;
struct audit_aux_data_fd_pair *ax;
if (likely(!context)) {
return 0;
}
ax = kmalloc(sizeof(*ax), GFP_KERNEL);
if (!ax) {
return -ENOMEM;
}
ax->fd[0] = fd1;
ax->fd[1] = fd2;
ax->d.type = AUDIT_FD_PAIR;
ax->d.next = context->aux;
context->aux = (void *)ax;
return 0;
context->fds[0] = fd1;
context->fds[1] = fd2;
}
/**