along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#include <unistd.h>
-#include <string.h>
#include <errno.h>
-#include <sys/inotify.h>
#include <poll.h>
+#include <string.h>
+#include <sys/inotify.h>
+#include <unistd.h>
-#include "util.h"
+#include "sd-login.h"
+
+#include "alloc-util.h"
#include "cgroup-util.h"
-#include "macro.h"
-#include "strv.h"
+#include "dirent-util.h"
+#include "escape.h"
+#include "fd-util.h"
#include "fileio.h"
-#include "login-util.h"
#include "formats-util.h"
+#include "fs-util.h"
#include "hostname-util.h"
-#include "sd-login.h"
+#include "io-util.h"
+#include "login-util.h"
+#include "macro.h"
+#include "parse-util.h"
+#include "path-util.h"
+#include "socket-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "user-util.h"
+#include "util.h"
+
+/* Error codes:
+ *
+ * invalid input parameters → -EINVAL
+ * invalid fd → -EBADF
+ * process does not exist → -ESRCH
+ * cgroup does not exist → -ENOENT
+ * machine, session does not exist → -ENXIO
+ * requested metadata on object is missing → -ENODATA
+ */
_public_ int sd_pid_get_session(pid_t pid, char **session) {
assert_return(pid >= 0, -EINVAL);
assert_return(unit, -EINVAL);
+#if 0 /// elogind does not support systemd units
return cg_pid_get_unit(pid, unit);
+#else
+ return -ESRCH;
+#endif // 0
}
_public_ int sd_pid_get_user_unit(pid_t pid, char **unit) {
assert_return(pid >= 0, -EINVAL);
assert_return(unit, -EINVAL);
+#if 0 /// elogind does not support systemd units
return cg_pid_get_user_unit(pid, unit);
+#else
+ return -ESRCH;
+#endif // 0
}
_public_ int sd_pid_get_machine_name(pid_t pid, char **name) {
assert_return(pid >= 0, -EINVAL);
assert_return(name, -EINVAL);
+#if 0 /// elogind does not support systemd units
return cg_pid_get_machine_name(pid, name);
+#else
+ return -ESRCH;
+#endif // 0
}
_public_ int sd_pid_get_slice(pid_t pid, char **slice) {
assert_return(pid >= 0, -EINVAL);
assert_return(slice, -EINVAL);
+#if 0 /// elogind does not support systemd slices
return cg_pid_get_slice(pid, slice);
+#else
+ return -ESRCH;
+#endif // 0
}
_public_ int sd_pid_get_user_slice(pid_t pid, char **slice) {
assert_return(pid >= 0, -EINVAL);
assert_return(slice, -EINVAL);
+#if 0 /// elogind does not support systemd slices
return cg_pid_get_user_slice(pid, slice);
+#else
+ return -ESRCH;
+#endif // 0
}
_public_ int sd_pid_get_owner_uid(pid_t pid, uid_t *uid) {
assert_return(pid >= 0, -EINVAL);
assert_return(uid, -EINVAL);
+#if 0 /// elogind does not support systemd slices
return cg_pid_get_owner_uid(pid, uid);
+#else
+ return -ESRCH;
+#endif // 0
+}
+
+_public_ int sd_pid_get_cgroup(pid_t pid, char **cgroup) {
+ char *c;
+ int r;
+
+ assert_return(pid >= 0, -EINVAL);
+ assert_return(cgroup, -EINVAL);
+
+ r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, pid, &c);
+ if (r < 0)
+ return r;
+
+ /* The internal APIs return the empty string for the root
+ * cgroup, let's return the "/" in the public APIs instead, as
+ * that's easier and less ambigious for people to grok. */
+ if (isempty(c)) {
+ free(c);
+ c = strdup("/");
+ if (!c)
+ return -ENOMEM;
+
+ }
+
+ *cgroup = c;
+ return 0;
}
_public_ int sd_peer_get_session(int fd, char **session) {
if (r < 0)
return r;
+#if 0 /// elogind does not support systemd scopes
return cg_pid_get_session(ucred.pid, session);
+#else
+ return -ESRCH;
+#endif // 0
}
_public_ int sd_peer_get_owner_uid(int fd, uid_t *uid) {
if (r < 0)
return r;
+#if 0 /// elogind does not support systemd units
return cg_pid_get_owner_uid(ucred.pid, uid);
+#else
+ return -ESRCH;
+#endif // 0
}
_public_ int sd_peer_get_unit(int fd, char **unit) {
if (r < 0)
return r;
+#if 0 /// elogind does not support systemd units
return cg_pid_get_unit(ucred.pid, unit);
+#else
+ return -ESRCH;
+#endif // 0
}
_public_ int sd_peer_get_user_unit(int fd, char **unit) {
if (r < 0)
return r;
+#if 0 /// elogind does not support systemd units
return cg_pid_get_user_unit(ucred.pid, unit);
+#else
+ return -ESRCH;
+#endif // 0
}
_public_ int sd_peer_get_machine_name(int fd, char **machine) {
if (r < 0)
return r;
+#if 0 /// elogind does not support systemd units
return cg_pid_get_machine_name(ucred.pid, machine);
+#else
+ return -ESRCH;
+#endif // 0
}
_public_ int sd_peer_get_slice(int fd, char **slice) {
if (r < 0)
return r;
+#if 0 /// elogind does not support systemd slices
return cg_pid_get_slice(ucred.pid, slice);
+#else
+ return -ESRCH;
+#endif // 0
}
_public_ int sd_peer_get_user_slice(int fd, char **slice) {
if (r < 0)
return r;
+#if 0 /// elogind does not support systemd slices
return cg_pid_get_user_slice(ucred.pid, slice);
+#else
+ return -ESRCH;
+#endif // 0
+}
+
+_public_ int sd_peer_get_cgroup(int fd, char **cgroup) {
+ struct ucred ucred;
+ int r;
+
+ assert_return(fd >= 0, -EBADF);
+ assert_return(cgroup, -EINVAL);
+
+ r = getpeercred(fd, &ucred);
+ if (r < 0)
+ return r;
+
+ return sd_pid_get_cgroup(ucred.pid, cgroup);
}
static int file_of_uid(uid_t uid, char **p) {
+
+ assert_return(uid_is_valid(uid), -EINVAL);
assert(p);
if (asprintf(p, "/run/systemd/users/" UID_FMT, uid) < 0)
if (!s)
return -ENOMEM;
- } else if (r < 0) {
+ }
+ if (r < 0) {
free(s);
return r;
- } else if (!s)
+ }
+ if (isempty(s)) {
+ free(s);
return -EIO;
+ }
*state = s;
return 0;
r = parse_env_file(p, NEWLINE, "DISPLAY", &s, NULL);
if (r == -ENOENT)
- return -ENXIO;
+ return -ENODATA;
if (r < 0)
return r;
-
if (isempty(s))
- return -ENXIO;
+ return -ENODATA;
*session = s;
s = NULL;
return 0;
}
-_public_ int sd_uid_is_on_seat(uid_t uid, int require_active, const char *seat) {
- _cleanup_free_ char *t = NULL, *s = NULL, *p = NULL;
- size_t l;
+static int file_of_seat(const char *seat, char **_p) {
+ char *p;
int r;
- const char *word, *variable, *state;
- assert_return(seat, -EINVAL);
+ assert(_p);
- variable = require_active ? "ACTIVE_UID" : "UIDS";
+ if (seat) {
+ if (!filename_is_valid(seat))
+ return -EINVAL;
p = strappend("/run/systemd/seats/", seat);
+ } else {
+ _cleanup_free_ char *buf = NULL;
+
+ r = sd_session_get_seat(NULL, &buf);
+ if (r < 0)
+ return r;
+
+ p = strappend("/run/systemd/seats/", buf);
+ }
+
if (!p)
return -ENOMEM;
- r = parse_env_file(p, NEWLINE, variable, &s, NULL);
+ *_p = p;
+ p = NULL;
+ return 0;
+}
+_public_ int sd_uid_is_on_seat(uid_t uid, int require_active, const char *seat) {
+ _cleanup_free_ char *t = NULL, *s = NULL, *p = NULL;
+ size_t l;
+ int r;
+ const char *word, *variable, *state;
+
+ assert_return(uid_is_valid(uid), -EINVAL);
+
+ r = file_of_seat(seat, &p);
if (r < 0)
return r;
- if (!s)
- return -EIO;
+ variable = require_active ? "ACTIVE_UID" : "UIDS";
+
+ r = parse_env_file(p, NEWLINE, variable, &s, NULL);
+ if (r == -ENOENT)
+ return 0;
+ if (r < 0)
+ return r;
+ if (isempty(s))
+ return 0;
if (asprintf(&t, UID_FMT, uid) < 0)
return -ENOMEM;
- FOREACH_WORD(word, l, s, state) {
+ FOREACH_WORD(word, l, s, state)
if (strneq(t, word, l))
return 1;
- }
return 0;
}
char **a;
int r;
+ assert(variable);
+
r = file_of_uid(uid, &p);
if (r < 0)
return r;
- r = parse_env_file(p, NEWLINE,
- variable, &s,
- NULL);
- if (r < 0) {
- if (r == -ENOENT) {
+ r = parse_env_file(p, NEWLINE, variable, &s, NULL);
+ if (r == -ENOENT || (r >= 0 && isempty(s))) {
if (array)
*array = NULL;
return 0;
}
-
+ if (r < 0)
return r;
- }
-
- if (!s) {
- if (array)
- *array = NULL;
- return 0;
- }
a = strv_split(s, " ");
-
if (!a)
return -ENOMEM;
}
_public_ int sd_session_is_active(const char *session) {
- int r;
_cleanup_free_ char *p = NULL, *s = NULL;
+ int r;
r = file_of_session(session, &p);
if (r < 0)
return r;
r = parse_env_file(p, NEWLINE, "ACTIVE", &s, NULL);
+ if (r == -ENOENT)
+ return -ENXIO;
if (r < 0)
return r;
-
- if (!s)
+ if (isempty(s))
return -EIO;
return parse_boolean(s);
}
_public_ int sd_session_is_remote(const char *session) {
- int r;
_cleanup_free_ char *p = NULL, *s = NULL;
+ int r;
r = file_of_session(session, &p);
if (r < 0)
return r;
r = parse_env_file(p, NEWLINE, "REMOTE", &s, NULL);
+ if (r == -ENOENT)
+ return -ENXIO;
if (r < 0)
return r;
-
- if (!s)
- return -EIO;
+ if (isempty(s))
+ return -ENODATA;
return parse_boolean(s);
}
return r;
r = parse_env_file(p, NEWLINE, "STATE", &s, NULL);
+ if (r == -ENOENT)
+ return -ENXIO;
if (r < 0)
return r;
- else if (!s)
+ if (isempty(s))
return -EIO;
*state = s;
return r;
r = parse_env_file(p, NEWLINE, "UID", &s, NULL);
+ if (r == -ENOENT)
+ return -ENXIO;
if (r < 0)
return r;
-
- if (!s)
+ if (isempty(s))
return -EIO;
return parse_uid(s, uid);
int r;
assert_return(value, -EINVAL);
+ assert(field);
r = file_of_session(session, &p);
if (r < 0)
return r;
r = parse_env_file(p, NEWLINE, field, &s, NULL);
+ if (r == -ENOENT)
+ return -ENXIO;
if (r < 0)
return r;
-
if (isempty(s))
- return -ENXIO;
+ return -ENODATA;
*value = s;
s = NULL;
unsigned u;
int r;
+ assert_return(vtnr, -EINVAL);
+
r = session_get_string(session, "VTNR", &vtnr_string);
if (r < 0)
return r;
return session_get_string(session, "REMOTE_HOST", remote_host);
}
-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 {
- _cleanup_free_ char *buf = NULL;
-
- r = sd_session_get_seat(NULL, &buf);
- if (r < 0)
- return r;
-
- p = strappend("/run/systemd/seats/", buf);
- }
-
- if (!p)
- return -ENOMEM;
-
- *_p = p;
- p = NULL;
- return 0;
-}
-
_public_ int sd_seat_get_active(const char *seat, char **session, uid_t *uid) {
_cleanup_free_ char *p = NULL, *s = NULL, *t = NULL;
int r;
"ACTIVE", &s,
"ACTIVE_UID", &t,
NULL);
+ if (r == -ENOENT)
+ return -ENXIO;
if (r < 0)
return r;
if (session && !s)
- return -ENOENT;
+ return -ENODATA;
if (uid && !t)
- return -ENOENT;
+ return -ENODATA;
if (uid && t) {
r = parse_uid(t, uid);
"SESSIONS", &s,
"ACTIVE_SESSIONS", &t,
NULL);
-
+ if (r == -ENOENT)
+ return -ENXIO;
if (r < 0)
return r;
return -ENOMEM;
r = parse_uid(k, b + i);
-
if (r < 0)
continue;
_cleanup_free_ char *p = NULL, *s = NULL;
int r;
- assert_return(variable, -EINVAL);
+ assert(variable);
r = file_of_seat(seat, &p);
if (r < 0)
r = parse_env_file(p, NEWLINE,
variable, &s,
NULL);
+ if (r == -ENOENT)
+ return -ENXIO;
if (r < 0)
return r;
- if (!s)
- return 0;
+ if (isempty(s))
+ return -ENODATA;
return parse_boolean(s);
}
p = strjoina("/run/systemd/machines/", machine);
r = parse_env_file(p, NEWLINE, "CLASS", &c, NULL);
+ if (r == -ENOENT)
+ return -ENXIO;
if (r < 0)
return r;
if (!c)
p = strjoina("/run/systemd/machines/", machine);
r = parse_env_file(p, NEWLINE, "NETIF", &netif, NULL);
+ if (r == -ENOENT)
+ return -ENXIO;
if (r < 0)
return r;
if (!netif) {
*(char*) (mempcpy(buf, word, l)) = 0;
- if (safe_atoi(buf, &ifi) < 0)
- continue;
- if (ifi <= 0)
+ if (parse_ifindex(buf, &ifi) < 0)
continue;
if (!GREEDY_REALLOC(ni, allocated, nr+1)) {
~ianmdlvl / elogind.git / blobdiff