* and <dustin.kirkland@us.ibm.com> for LSPP certification compliance.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/init.h>
#include <asm/types.h>
#include <linux/atomic.h>
#include <linux/capability.h>
#include <linux/fs_struct.h>
#include <linux/compat.h>
+#include <linux/ctype.h>
#include "audit.h"
/* no execve audit message should be longer than this (userspace limits) */
#define MAX_EXECVE_AUDIT_LEN 7500
+/* max length to print of cmdline/proctitle value during audit */
+#define MAX_PROCTITLE_AUDIT_LEN 128
+
/* number of audit rules */
int audit_n_rules;
struct audit_field *f = &rule->fields[i];
struct audit_names *n;
int result = 0;
+ pid_t pid;
switch (f->type) {
case AUDIT_PID:
- result = audit_comparator(tsk->pid, f->op, f->val);
+ pid = task_pid_nr(tsk);
+ result = audit_comparator(pid, f->op, f->val);
break;
case AUDIT_PPID:
if (ctx) {
if (!ctx->ppid)
- ctx->ppid = sys_getppid();
+ ctx->ppid = task_ppid_nr(tsk);
result = audit_comparator(ctx->ppid, f->op, f->val);
}
break;
rcu_read_unlock();
}
-static inline struct audit_context *audit_get_context(struct task_struct *tsk,
+/* 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)
{
return context;
}
+static inline void audit_proctitle_free(struct audit_context *context)
+{
+ kfree(context->proctitle.value);
+ context->proctitle.value = NULL;
+ context->proctitle.len = 0;
+}
+
static inline void audit_free_names(struct audit_context *context)
{
struct audit_names *n, *next;
if (context->put_count + context->ino_count != context->name_count) {
int i = 0;
- printk(KERN_ERR "%s:%d(:%d): major=%d in_syscall=%d"
- " name_count=%d put_count=%d"
- " ino_count=%d [NOT freeing]\n",
- __FILE__, __LINE__,
+ pr_err("%s:%d(:%d): major=%d in_syscall=%d"
+ " name_count=%d put_count=%d ino_count=%d"
+ " [NOT freeing]\n", __FILE__, __LINE__,
context->serial, context->major, context->in_syscall,
context->name_count, context->put_count,
context->ino_count);
list_for_each_entry(n, &context->names_list, list) {
- printk(KERN_ERR "names[%d] = %p = %s\n", i++,
- n->name, n->name->name ?: "(null)");
+ pr_err("names[%d] = %p = %s\n", i++, n->name,
+ n->name->name ?: "(null)");
}
dump_stack();
return;
audit_free_aux(context);
kfree(context->filterkey);
kfree(context->sockaddr);
+ audit_proctitle_free(context);
kfree(context);
}
*/
buf = kmalloc(MAX_EXECVE_AUDIT_LEN + 1, GFP_KERNEL);
if (!buf) {
- audit_panic("out of memory for argv string\n");
+ audit_panic("out of memory for argv string");
return;
}
audit_log_end(ab);
}
+static inline int audit_proctitle_rtrim(char *proctitle, int len)
+{
+ char *end = proctitle + len - 1;
+ while (end > proctitle && !isprint(*end))
+ end--;
+
+ /* catch the case where proctitle is only 1 non-print character */
+ len = end - proctitle + 1;
+ len -= isprint(proctitle[len-1]) == 0;
+ return len;
+}
+
+static void audit_log_proctitle(struct task_struct *tsk,
+ struct audit_context *context)
+{
+ int res;
+ char *buf;
+ char *msg = "(null)";
+ int len = strlen(msg);
+ struct audit_buffer *ab;
+
+ ab = audit_log_start(context, GFP_KERNEL, AUDIT_PROCTITLE);
+ if (!ab)
+ return; /* audit_panic or being filtered */
+
+ audit_log_format(ab, "proctitle=");
+
+ /* Not cached */
+ if (!context->proctitle.value) {
+ buf = kmalloc(MAX_PROCTITLE_AUDIT_LEN, GFP_KERNEL);
+ if (!buf)
+ goto out;
+ /* Historically called this from procfs naming */
+ res = get_cmdline(tsk, buf, MAX_PROCTITLE_AUDIT_LEN);
+ if (res == 0) {
+ kfree(buf);
+ goto out;
+ }
+ res = audit_proctitle_rtrim(buf, res);
+ if (res == 0) {
+ kfree(buf);
+ goto out;
+ }
+ context->proctitle.value = buf;
+ context->proctitle.len = res;
+ }
+ msg = context->proctitle.value;
+ len = context->proctitle.len;
+out:
+ audit_log_n_untrustedstring(ab, msg, len);
+ audit_log_end(ab);
+}
+
static void audit_log_exit(struct audit_context *context, struct task_struct *tsk)
{
int i, call_panic = 0;
audit_log_name(context, n, NULL, i++, &call_panic);
}
+ audit_log_proctitle(tsk, context);
+
/* Send end of event record to help user space know we are finished */
ab = audit_log_start(context, GFP_KERNEL, AUDIT_EOE);
if (ab)
{
struct audit_context *context;
- context = audit_get_context(tsk, 0, 0);
+ context = audit_take_context(tsk, 0, 0);
if (!context)
return;
else
success = AUDITSC_FAILURE;
- context = audit_get_context(tsk, success, return_code);
+ context = audit_take_context(tsk, success, return_code);
if (!context)
return;
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\n");
+ pr_warn("out of memory, audit has lost a tree reference\n");
audit_set_auditable(context);
audit_put_chunk(chunk);
unroll_tree_refs(context, p, count);
goto retry;
}
/* too bad */
- printk(KERN_WARNING
- "out of memory, audit has lost a tree reference\n");
+ pr_warn("out of memory, audit has lost a tree reference\n");
unroll_tree_refs(context, p, count);
audit_set_auditable(context);
return;
if (!context->in_syscall) {
#if AUDIT_DEBUG == 2
- printk(KERN_ERR "%s:%d(:%d): ignoring getname(%p)\n",
+ pr_err("%s:%d(:%d): ignoring getname(%p)\n",
__FILE__, __LINE__, context->serial, name);
dump_stack();
#endif
BUG_ON(!context);
if (!name->aname || !context->in_syscall) {
#if AUDIT_DEBUG == 2
- printk(KERN_ERR "%s:%d(:%d): final_putname(%p)\n",
+ pr_err("%s:%d(:%d): final_putname(%p)\n",
__FILE__, __LINE__, context->serial, name);
if (context->name_count) {
struct audit_names *n;
int i = 0;
list_for_each_entry(n, &context->names_list, list)
- printk(KERN_ERR "name[%d] = %p = %s\n", i++,
- n->name, n->name->name ?: "(null)");
+ pr_err("name[%d] = %p = %s\n", i++, n->name,
+ n->name->name ?: "(null)");
}
#endif
final_putname(name);
else {
++context->put_count;
if (context->put_count > context->name_count) {
- printk(KERN_ERR "%s:%d(:%d): major=%d"
- " in_syscall=%d putname(%p) name_count=%d"
- " put_count=%d\n",
+ pr_err("%s:%d(:%d): major=%d in_syscall=%d putname(%p)"
+ " name_count=%d put_count=%d\n",
__FILE__, __LINE__,
context->serial, context->major,
context->in_syscall, name->name,
ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_LOGIN);
if (!ab)
return;
- audit_log_format(ab, "pid=%d uid=%u"
- " old-auid=%u new-auid=%u old-ses=%u new-ses=%u"
- " res=%d",
- current->pid, uid,
- oldloginuid, loginuid, oldsessionid, sessionid,
- !rc);
+ audit_log_format(ab, "pid=%d uid=%u", task_pid_nr(current), uid);
+ audit_log_task_context(ab);
+ audit_log_format(ab, " old-auid=%u auid=%u old-ses=%u ses=%u res=%d",
+ oldloginuid, loginuid, oldsessionid, sessionid, !rc);
audit_log_end(ab);
}
{
struct audit_context *context = current->audit_context;
- context->target_pid = t->pid;
+ context->target_pid = task_pid_nr(t);
context->target_auid = audit_get_loginuid(t);
context->target_uid = task_uid(t);
context->target_sessionid = audit_get_sessionid(t);
if (audit_pid && t->tgid == audit_pid) {
if (sig == SIGTERM || sig == SIGHUP || sig == SIGUSR1 || sig == SIGUSR2) {
- audit_sig_pid = tsk->pid;
+ audit_sig_pid = task_pid_nr(tsk);
if (uid_valid(tsk->loginuid))
audit_sig_uid = tsk->loginuid;
else
/* optimize the common case by putting first signal recipient directly
* in audit_context */
if (!ctx->target_pid) {
- ctx->target_pid = t->tgid;
+ ctx->target_pid = task_tgid_nr(t);
ctx->target_auid = audit_get_loginuid(t);
ctx->target_uid = t_uid;
ctx->target_sessionid = audit_get_sessionid(t);
}
BUG_ON(axp->pid_count >= AUDIT_AUX_PIDS);
- axp->target_pid[axp->pid_count] = t->tgid;
+ axp->target_pid[axp->pid_count] = task_tgid_nr(t);
axp->target_auid[axp->pid_count] = audit_get_loginuid(t);
axp->target_uid[axp->pid_count] = t_uid;
axp->target_sessionid[axp->pid_count] = audit_get_sessionid(t);
from_kgid(&init_user_ns, gid),
sessionid);
audit_log_task_context(ab);
- audit_log_format(ab, " pid=%d comm=", current->pid);
+ audit_log_format(ab, " pid=%d comm=", task_pid_nr(current));
audit_log_untrustedstring(ab, current->comm);
if (mm) {
down_read(&mm->mmap_sem);
projects / cascardo / linux.git / blobdiff