[PATCH] add uid and comm to OBJ_PID records
Add uid and comm collection to OBJ_PID records. This information was
ask for by RHEL users who wanted a better idea where signals were ending
up.
Signed-off-by: Eric Paris <eparis(a)redhat.com>
---
#kill a program running as a different user in a different domain
type=OBJ_PID msg=audit(12/10/2007 15:36:54.328:67) : opid=3018
obj=root:system_r:httpd_t:s0-s0:c0.c1023 uid=test comm=loop
type=SYSCALL msg=audit(12/10/2007 15:36:54.328:67) : arch=x86_64 syscall=kill success=yes
exit=0 a0=bca a1=f a2=0 a3=0 items=0 ppid=2189 pid=2194 auid=root uid=root gid=root
euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=pts0 comm=bash
exe=/bin/bash subj=root:system_r:unconfined_t:s0-s0:c0.c1023 key=(null)
## custom program which fork() 2 children, puts them in a grp and kills the grp.
type=OBJ_PID msg=audit(12/10/2007 15:29:59.969:38) : opid=2976
obj=root:system_r:unconfined_t:s0-s0:c0.c1023 uid=root comm=tmp
type=OBJ_PID msg=audit(12/10/2007 15:29:59.969:38) : opid=2975
obj=root:system_r:unconfined_t:s0-s0:c0.c1023 uid=root comm=tmp
type=SYSCALL msg=audit(12/10/2007 15:29:59.969:38) : arch=x86_64 syscall=kill success=yes
exit=0 a0=fffff461 a1=9 a2=0 a3=0 items=0 ppid=2194 pid=2974 auid=root uid=root gid=root
euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=pts0 comm=tmp
exe=/tmp/tmp subj=root:system_r:unconfined_t:s0-s0:c0.c1023 key=(null)
kernel/auditsc.c | 21 ++++++++++++++++++---
1 files changed, 18 insertions(+), 3 deletions(-)
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index bce9ecd..dcedbb0 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -176,7 +176,9 @@ struct audit_aux_data_fd_pair {
struct audit_aux_data_pids {
struct audit_aux_data d;
pid_t target_pid[AUDIT_AUX_PIDS];
+ pid_t target_uid[AUDIT_AUX_PIDS];
u32 target_sid[AUDIT_AUX_PIDS];
+ char target_comm[AUDIT_AUX_PIDS][TASK_COMM_LEN];
int pid_count;
};
@@ -215,7 +217,9 @@ struct audit_context {
int arch;
pid_t target_pid;
+ pid_t target_uid;
u32 target_sid;
+ char target_comm[TASK_COMM_LEN];
struct audit_tree_refs *trees, *first_trees;
int tree_count;
@@ -922,7 +926,7 @@ static void audit_log_task_info(struct audit_buffer *ab, struct
task_struct *tsk
}
static int audit_log_pid_context(struct audit_context *context, pid_t pid,
- u32 sid)
+ u32 sid, pid_t uid, char *comm)
{
struct audit_buffer *ab;
char *s = NULL;
@@ -938,6 +942,8 @@ static int audit_log_pid_context(struct audit_context *context, pid_t
pid,
rc = 1;
} else
audit_log_format(ab, "opid=%d obj=%s", pid, s);
+ audit_log_format(ab, " uid=%d comm=", uid);
+ audit_log_untrustedstring(ab, comm);
audit_log_end(ab);
kfree(s);
@@ -1168,13 +1174,16 @@ static void audit_log_exit(struct audit_context *context, struct
task_struct *ts
for (i = 0; i < axs->pid_count; i++)
if (audit_log_pid_context(context, axs->target_pid[i],
- axs->target_sid[i]))
+ axs->target_sid[i],
+ axs->target_uid[i],
+ axs->target_comm[i]))
call_panic = 1;
}
if (context->target_pid &&
audit_log_pid_context(context, context->target_pid,
- context->target_sid))
+ context->target_sid, context->target_uid,
+ context->target_comm))
call_panic = 1;
if (context->pwd && context->pwdmnt) {
@@ -2194,6 +2203,8 @@ void __audit_ptrace(struct task_struct *t)
context->target_pid = t->pid;
selinux_get_task_sid(t, &context->target_sid);
+ memcpy(context->target_comm, t->comm, TASK_COMM_LEN);
+ context->target_uid = t->uid;
}
/**
@@ -2231,6 +2242,8 @@ int __audit_signal_info(int sig, struct task_struct *t)
if (!ctx->target_pid) {
ctx->target_pid = t->tgid;
selinux_get_task_sid(t, &ctx->target_sid);
+ memcpy(ctx->target_comm, t->comm, TASK_COMM_LEN);
+ ctx->target_uid = t->uid;
return 0;
}
@@ -2248,6 +2261,8 @@ int __audit_signal_info(int sig, struct task_struct *t)
axp->target_pid[axp->pid_count] = t->tgid;
selinux_get_task_sid(t, &axp->target_sid[axp->pid_count]);
+ memcpy(axp->target_comm[axp->pid_count], t->comm, TASK_COMM_LEN);
+ axp->target_uid[axp->pid_count] = t->uid;
axp->pid_count++;
return 0;