Copyright 2011 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ 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
- General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU General Public License
+ You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
return 0;
}
+_public_ int sd_pid_get_unit(pid_t pid, char **unit) {
+ int r;
+ char *cgroup, *p, *at, *b;
+ size_t k;
+
+ if (!unit)
+ return -EINVAL;
+
+ r = pid_get_cgroup(pid, NULL, &cgroup);
+ if (r < 0)
+ return r;
+
+ if (!startswith(cgroup, "/system/")) {
+ free(cgroup);
+ return -ENOENT;
+ }
+
+ p = cgroup + 8;
+ k = strcspn(p, "/");
+
+ at = memchr(p, '@', k);
+ if (at && at[1] == '.') {
+ size_t j;
+
+ /* This is a templated service */
+ if (p[k] != '/') {
+ free(cgroup);
+ return -EIO;
+ }
+
+ j = strcspn(p+k+1, "/");
+
+ b = malloc(k + j + 1);
+
+ if (b) {
+ memcpy(b, p, at - p + 1);
+ memcpy(b + (at - p) + 1, p + k + 1, j);
+ memcpy(b + (at - p) + 1 + j, at + 1, k - (at - p) - 1);
+ b[k+j] = 0;
+ }
+ } else
+ b = strndup(p, k);
+
+ free(cgroup);
+
+ if (!b)
+ return -ENOMEM;
+
+ *unit = b;
+ return 0;
+}
+
_public_ int sd_pid_get_owner_uid(pid_t pid, uid_t *uid) {
int r;
char *root, *cgroup, *p, *cc;
return uid_get_array(uid, require_active ? "ACTIVE_SEATS" : "SEATS", seats);
}
-_public_ int sd_session_is_active(const char *session) {
+static int file_of_session(const char *session, char **_p) {
+ char *p;
int r;
- char *p, *s = NULL;
- if (!session)
- return -EINVAL;
+ assert(_p);
+
+ if (session)
+ p = strappend("/run/systemd/sessions/", session);
+ else {
+ char *buf;
+
+ r = sd_pid_get_session(0, &buf);
+ if (r < 0)
+ return r;
+
+ p = strappend("/run/systemd/sessions/", buf);
+ free(buf);
+ }
- p = strappend("/run/systemd/sessions/", session);
if (!p)
return -ENOMEM;
+ *_p = p;
+ return 0;
+}
+
+_public_ int sd_session_is_active(const char *session) {
+ int r;
+ char *p, *s = NULL;
+
+ r = file_of_session(session, &p);
+ if (r < 0)
+ return r;
+
r = parse_env_file(p, NEWLINE, "ACTIVE", &s, NULL);
free(p);
int r;
char *p, *s = NULL;
- if (!session)
- return -EINVAL;
if (!uid)
return -EINVAL;
- p = strappend("/run/systemd/sessions/", session);
- if (!p)
- return -ENOMEM;
+ r = file_of_session(session, &p);
+ if (r < 0)
+ return r;
r = parse_env_file(p, NEWLINE, "UID", &s, NULL);
free(p);
return r;
}
-_public_ int sd_session_get_seat(const char *session, char **seat) {
+static int session_get_string(const char *session, const char *field, char **value) {
char *p, *s = NULL;
int r;
- if (!session)
- return -EINVAL;
- if (!seat)
+ if (!value)
return -EINVAL;
- p = strappend("/run/systemd/sessions/", session);
- if (!p)
- return -ENOMEM;
+ r = file_of_session(session, &p);
+ if (r < 0)
+ return r;
- r = parse_env_file(p, NEWLINE, "SEAT", &s, NULL);
+ r = parse_env_file(p, NEWLINE, field, &s, NULL);
free(p);
if (r < 0) {
if (isempty(s))
return -ENOENT;
- *seat = s;
+ *value = s;
+ return 0;
+}
+
+_public_ int sd_session_get_seat(const char *session, char **seat) {
+ return session_get_string(session, "SEAT", seat);
+}
+
+_public_ int sd_session_get_service(const char *session, char **service) {
+ return session_get_string(session, "SERVICE", service);
+}
+
+_public_ int sd_session_get_type(const char *session, char **type) {
+ return session_get_string(session, "TYPE", type);
+}
+
+_public_ int sd_session_get_class(const char *session, char **class) {
+ return session_get_string(session, "CLASS", class);
+}
+
+_public_ int sd_session_get_display(const char *session, char **display) {
+ return session_get_string(session, "DISPLAY", display);
+}
+
+static int file_of_seat(const char *seat, char **_p) {
+ char *p;
+ int r;
+
+ assert(_p);
+
+ if (seat)
+ p = strappend("/run/systemd/seats/", seat);
+ else {
+ char *buf;
+
+ r = sd_session_get_seat(NULL, &buf);
+ if (r < 0)
+ return r;
+
+ p = strappend("/run/systemd/seats/", buf);
+ free(buf);
+ }
+
+ if (!p)
+ return -ENOMEM;
+
+ *_p = p;
return 0;
}
char *p, *s = NULL, *t = NULL;
int r;
- if (!seat)
- return -EINVAL;
if (!session && !uid)
return -EINVAL;
- p = strappend("/run/systemd/seats/", seat);
- if (!p)
- return -ENOMEM;
+ r = file_of_seat(seat, &p);
+ if (r < 0)
+ return r;
r = parse_env_file(p, NEWLINE,
"ACTIVE", &s,
unsigned n = 0;
int r;
- if (!seat)
- return -EINVAL;
-
- p = strappend("/run/systemd/seats/", seat);
- if (!p)
- return -ENOMEM;
+ r = file_of_seat(seat, &p);
+ if (r < 0)
+ return r;
r = parse_env_file(p, NEWLINE,
"SESSIONS", &s,
char *p, *s = NULL;
int r;
- if (!seat)
- return -EINVAL;
-
- p = strappend("/run/systemd/seats/", seat);
- if (!p)
- return -ENOMEM;
+ r = file_of_seat(seat, &p);
+ if (r < 0)
+ return r;
r = parse_env_file(p, NEWLINE,
- "IS_VTCONSOLE", &s,
+ "CAN_MULTI_SESSION", &s,
NULL);
free(p);
~ianmdlvl / elogind.git / blobdiff