diff options
Diffstat (limited to 'src/libsystemd/sd-login/sd-login.c')
| -rw-r--r-- | src/libsystemd/sd-login/sd-login.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/libsystemd/sd-login/sd-login.c b/src/libsystemd/sd-login/sd-login.c index 180bdd09ad..55da26e9d9 100644 --- a/src/libsystemd/sd-login/sd-login.c +++ b/src/libsystemd/sd-login/sd-login.c @@ -101,6 +101,32 @@ _public_ int sd_pid_get_owner_uid(pid_t pid, uid_t *uid) { return cg_pid_get_owner_uid(pid, uid); } +_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) { struct ucred ucred = {}; int r; @@ -199,6 +225,20 @@ _public_ int sd_peer_get_user_slice(int fd, char **slice) { return cg_pid_get_user_slice(ucred.pid, slice); } +_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); |