audit.c revision 5b12334d35eadf1f45cc3d631fd1a2e72ffaea0a
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <assert.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include "macro.h"
#include "audit.h"
#include "util.h"
#include "log.h"
#include "fileio.h"
#include "virt.h"
int audit_session_from_pid(pid_t pid, uint32_t *id) {
_cleanup_free_ char *s = NULL;
const char *p;
uint32_t u;
int r;
assert(id);
/* Audit doesn't support containers right now */
if (detect_container(NULL) > 0)
return -ENOTSUP;
if (pid == 0)
p = "/proc/self/sessionid";
else
p = procfs_file_alloca(pid, "sessionid");
r = read_one_line_file(p, &s);
if (r < 0)
return r;
r = safe_atou32(s, &u);
if (r < 0)
return r;
if (u == (uint32_t) -1 || u <= 0)
return -ENXIO;
*id = u;
return 0;
}
int audit_loginuid_from_pid(pid_t pid, uid_t *uid) {
_cleanup_free_ char *s = NULL;
const char *p;
uid_t u;
int r;
assert(uid);
/* Audit doesn't support containers right now */
if (detect_container(NULL) > 0)
return -ENOTSUP;
if (pid == 0)
p = "/proc/self/loginuid";
else
p = procfs_file_alloca(pid, "loginuid");
r = read_one_line_file(p, &s);
if (r < 0)
return r;
r = parse_uid(s, &u);
if (r < 0)
return r;
if (u == (uid_t) -1)
return -ENXIO;
*uid = (uid_t) u;
return 0;
}