-int audit_session_from_pid(pid_t pid, uint32_t *id) {
- char *s;
- uint32_t u;
- int r;
-
- assert(id);
-
- if (have_effective_cap(CAP_AUDIT_CONTROL) <= 0)
- return -ENOENT;
-
- if (pid == 0)
- r = read_one_line_file("/proc/self/sessionid", &s);
- else {
- char *p;
-
- if (asprintf(&p, "/proc/%lu/sessionid", (unsigned long) pid) < 0)
- return -ENOMEM;
-
- r = read_one_line_file(p, &s);
- free(p);
- }
-
- if (r < 0)
- return r;
-
- r = safe_atou32(s, &u);
- free(s);
-
- if (r < 0)
- return r;
-
- if (u == (uint32_t) -1 || u <= 0)
- return -ENOENT;
-
- *id = u;
- return 0;
-}
-
-int audit_loginuid_from_pid(pid_t pid, uid_t *uid) {
- char *s;
- uid_t u;
- int r;
-
- assert(uid);
-
- /* Only use audit login uid if we are executed with sufficient
- * capabilities so that pam_loginuid could do its job. If we
- * are lacking the CAP_AUDIT_CONTROL capabality we most likely
- * are being run in a container and /proc/self/loginuid is
- * useless since it probably contains a uid of the host
- * system. */
-
- if (have_effective_cap(CAP_AUDIT_CONTROL) <= 0)
- return -ENOENT;
-
- if (pid == 0)
- r = read_one_line_file("/proc/self/loginuid", &s);
- else {
- char *p;
-
- if (asprintf(&p, "/proc/%lu/loginuid", (unsigned long) pid) < 0)
- return -ENOMEM;
-
- r = read_one_line_file(p, &s);
- free(p);
- }
-
- if (r < 0)
- return r;
-
- r = parse_uid(s, &u);
- free(s);
-
- if (r < 0)
- return r;
-
- if (u == (uid_t) -1)
- return -ENOENT;
-
- *uid = (uid_t) u;
- return 0;
-}
-