diff options
Diffstat (limited to 'src/login/sd-login.c')
-rw-r--r-- | src/login/sd-login.c | 806 |
1 files changed, 0 insertions, 806 deletions
diff --git a/src/login/sd-login.c b/src/login/sd-login.c deleted file mode 100644 index eb1a4b91..00000000 --- a/src/login/sd-login.c +++ /dev/null @@ -1,806 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - This file is part of systemd. - - 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 - (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. - - You should have received a copy of the GNU General Public License - 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 "util.h" -#include "cgroup-util.h" -#include "macro.h" -#include "sd-login.h" -#include "strv.h" - -static int pid_get_cgroup(pid_t pid, char **root, char **cgroup) { - char *cg_process, *cg_init, *p; - int r; - - if (pid == 0) - pid = getpid(); - - if (pid <= 0) - return -EINVAL; - - r = cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, pid, &cg_process); - if (r < 0) - return r; - - r = cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, 1, &cg_init); - if (r < 0) { - free(cg_process); - return r; - } - - if (endswith(cg_init, "/system")) - cg_init[strlen(cg_init)-7] = 0; - else if (streq(cg_init, "/")) - cg_init[0] = 0; - - if (startswith(cg_process, cg_init)) - p = cg_process + strlen(cg_init); - else - p = cg_process; - - free(cg_init); - - if (cgroup) { - char* c; - - c = strdup(p); - if (!c) { - free(cg_process); - return -ENOMEM; - } - - *cgroup = c; - } - - if (root) { - cg_process[p-cg_process] = 0; - *root = cg_process; - } else - free(cg_process); - - return 0; -} - -_public_ int sd_pid_get_session(pid_t pid, char **session) { - int r; - char *cgroup, *p; - - if (!session) - return -EINVAL; - - r = pid_get_cgroup(pid, NULL, &cgroup); - if (r < 0) - return r; - - if (!startswith(cgroup, "/user/")) { - free(cgroup); - return -ENOENT; - } - - p = strchr(cgroup + 6, '/'); - if (!p) { - free(cgroup); - return -ENOENT; - } - - p++; - if (startswith(p, "shared/") || streq(p, "shared")) { - free(cgroup); - return -ENOENT; - } - - p = strndup(p, strcspn(p, "/")); - free(cgroup); - - if (!p) - return -ENOMEM; - - *session = p; - 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; - struct stat st; - - if (!uid) - return -EINVAL; - - r = pid_get_cgroup(pid, &root, &cgroup); - if (r < 0) - return r; - - if (!startswith(cgroup, "/user/")) { - free(cgroup); - free(root); - return -ENOENT; - } - - p = strchr(cgroup + 6, '/'); - if (!p) { - free(cgroup); - return -ENOENT; - } - - p++; - p += strcspn(p, "/"); - *p = 0; - - r = cg_get_path(SYSTEMD_CGROUP_CONTROLLER, root, cgroup, &cc); - free(root); - free(cgroup); - - if (r < 0) - return -ENOMEM; - - r = lstat(cc, &st); - free(cc); - - if (r < 0) - return -errno; - - if (!S_ISDIR(st.st_mode)) - return -ENOTDIR; - - *uid = st.st_uid; - return 0; -} - -_public_ int sd_uid_get_state(uid_t uid, char**state) { - char *p, *s = NULL; - int r; - - if (!state) - return -EINVAL; - - if (asprintf(&p, "/run/systemd/users/%lu", (unsigned long) uid) < 0) - return -ENOMEM; - - r = parse_env_file(p, NEWLINE, "STATE", &s, NULL); - free(p); - - if (r == -ENOENT) { - free(s); - s = strdup("offline"); - if (!s) - return -ENOMEM; - - *state = s; - return 0; - } else if (r < 0) { - free(s); - return r; - } else if (!s) - return -EIO; - - *state = s; - return 0; -} - -_public_ int sd_uid_is_on_seat(uid_t uid, int require_active, const char *seat) { - char *p, *w, *t, *state, *s = NULL; - size_t l; - int r; - const char *variable; - - if (!seat) - return -EINVAL; - - variable = require_active ? "ACTIVE_UID" : "UIDS"; - - p = strappend("/run/systemd/seats/", seat); - if (!p) - return -ENOMEM; - - r = parse_env_file(p, NEWLINE, variable, &s, NULL); - free(p); - - if (r < 0) { - free(s); - return r; - } - - if (!s) - return -EIO; - - if (asprintf(&t, "%lu", (unsigned long) uid) < 0) { - free(s); - return -ENOMEM; - } - - FOREACH_WORD(w, l, s, state) { - if (strncmp(t, w, l) == 0) { - free(s); - free(t); - - return 1; - } - } - - free(s); - free(t); - - return 0; -} - -static int uid_get_array(uid_t uid, const char *variable, char ***array) { - char *p, *s = NULL; - char **a; - int r; - - if (asprintf(&p, "/run/systemd/users/%lu", (unsigned long) uid) < 0) - return -ENOMEM; - - r = parse_env_file(p, NEWLINE, - variable, &s, - NULL); - free(p); - - if (r < 0) { - free(s); - - if (r == -ENOENT) { - if (array) - *array = NULL; - return 0; - } - - return r; - } - - if (!s) { - if (array) - *array = NULL; - return 0; - } - - a = strv_split(s, " "); - free(s); - - if (!a) - return -ENOMEM; - - strv_uniq(a); - r = strv_length(a); - - if (array) - *array = a; - else - strv_free(a); - - return r; -} - -_public_ int sd_uid_get_sessions(uid_t uid, int require_active, char ***sessions) { - return uid_get_array(uid, require_active ? "ACTIVE_SESSIONS" : "SESSIONS", sessions); -} - -_public_ int sd_uid_get_seats(uid_t uid, int require_active, char ***seats) { - return uid_get_array(uid, require_active ? "ACTIVE_SEATS" : "SEATS", seats); -} - -_public_ int sd_session_is_active(const char *session) { - int r; - char *p, *s = NULL; - - if (!session) - return -EINVAL; - - p = strappend("/run/systemd/sessions/", session); - if (!p) - return -ENOMEM; - - r = parse_env_file(p, NEWLINE, "ACTIVE", &s, NULL); - free(p); - - if (r < 0) { - free(s); - return r; - } - - if (!s) - return -EIO; - - r = parse_boolean(s); - free(s); - - return r; -} - -_public_ int sd_session_get_uid(const char *session, uid_t *uid) { - 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 = parse_env_file(p, NEWLINE, "UID", &s, NULL); - free(p); - - if (r < 0) { - free(s); - return r; - } - - if (!s) - return -EIO; - - r = parse_uid(s, uid); - free(s); - - return r; -} - -_public_ int sd_session_get_seat(const char *session, char **seat) { - char *p, *s = NULL; - int r; - - if (!session) - return -EINVAL; - if (!seat) - return -EINVAL; - - p = strappend("/run/systemd/sessions/", session); - if (!p) - return -ENOMEM; - - r = parse_env_file(p, NEWLINE, "SEAT", &s, NULL); - free(p); - - if (r < 0) { - free(s); - return r; - } - - if (isempty(s)) - return -ENOENT; - - *seat = s; - return 0; -} - -_public_ int sd_session_get_service(const char *session, char **service) { - char *p, *s = NULL; - int r; - - if (!session) - return -EINVAL; - if (!service) - return -EINVAL; - - p = strappend("/run/systemd/sessions/", session); - if (!p) - return -ENOMEM; - - r = parse_env_file(p, NEWLINE, "SERVICE", &s, NULL); - free(p); - - if (r < 0) { - free(s); - return r; - } - - if (isempty(s)) - return -ENOENT; - - *service = s; - return 0; -} - -_public_ int sd_seat_get_active(const char *seat, char **session, uid_t *uid) { - 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 = parse_env_file(p, NEWLINE, - "ACTIVE", &s, - "ACTIVE_UID", &t, - NULL); - free(p); - - if (r < 0) { - free(s); - free(t); - return r; - } - - if (session && !s) { - free(t); - return -ENOENT; - } - - if (uid && !t) { - free(s); - return -ENOENT; - } - - if (uid && t) { - r = parse_uid(t, uid); - if (r < 0) { - free(t); - free(s); - return r; - } - } - - free(t); - - if (session && s) - *session = s; - else - free(s); - - return 0; -} - -_public_ int sd_seat_get_sessions(const char *seat, char ***sessions, uid_t **uids, unsigned *n_uids) { - char *p, *s = NULL, *t = NULL, **a = NULL; - uid_t *b = NULL; - unsigned n = 0; - int r; - - if (!seat) - return -EINVAL; - - p = strappend("/run/systemd/seats/", seat); - if (!p) - return -ENOMEM; - - r = parse_env_file(p, NEWLINE, - "SESSIONS", &s, - "ACTIVE_SESSIONS", &t, - NULL); - free(p); - - if (r < 0) { - free(s); - free(t); - return r; - } - - if (s) { - a = strv_split(s, " "); - if (!a) { - free(s); - free(t); - return -ENOMEM; - } - } - - free(s); - - if (uids && t) { - char *w, *state; - size_t l; - - FOREACH_WORD(w, l, t, state) - n++; - - if (n == 0) - b = NULL; - else { - unsigned i = 0; - - b = new(uid_t, n); - if (!b) { - strv_free(a); - return -ENOMEM; - } - - FOREACH_WORD(w, l, t, state) { - char *k; - - k = strndup(w, l); - if (!k) { - free(t); - free(b); - strv_free(a); - return -ENOMEM; - } - - r = parse_uid(k, b + i); - free(k); - if (r < 0) - continue; - - i++; - } - } - } - - free(t); - - r = strv_length(a); - - if (sessions) - *sessions = a; - else - strv_free(a); - - if (uids) - *uids = b; - - if (n_uids) - *n_uids = n; - - return r; -} - -_public_ int sd_seat_can_multi_session(const char *seat) { - char *p, *s = NULL; - int r; - - if (!seat) - return -EINVAL; - - p = strappend("/run/systemd/seats/", seat); - if (!p) - return -ENOMEM; - - r = parse_env_file(p, NEWLINE, - "CAN_MULTI_SESSION", &s, - NULL); - free(p); - - if (r < 0) { - free(s); - return r; - } - - if (s) { - r = parse_boolean(s); - free(s); - } else - r = 0; - - return r; -} - -_public_ int sd_get_seats(char ***seats) { - return get_files_in_directory("/run/systemd/seats/", seats); -} - -_public_ int sd_get_sessions(char ***sessions) { - return get_files_in_directory("/run/systemd/sessions/", sessions); -} - -_public_ int sd_get_uids(uid_t **users) { - DIR *d; - int r = 0; - unsigned n = 0; - uid_t *l = NULL; - - d = opendir("/run/systemd/users/"); - if (!d) - return -errno; - - for (;;) { - struct dirent buffer, *de; - int k; - uid_t uid; - - k = readdir_r(d, &buffer, &de); - if (k != 0) { - r = -k; - goto finish; - } - - if (!de) - break; - - dirent_ensure_type(d, de); - - if (!dirent_is_file(de)) - continue; - - k = parse_uid(de->d_name, &uid); - if (k < 0) - continue; - - if (users) { - if ((unsigned) r >= n) { - uid_t *t; - - n = MAX(16, 2*r); - t = realloc(l, sizeof(uid_t) * n); - if (!t) { - r = -ENOMEM; - goto finish; - } - - l = t; - } - - assert((unsigned) r < n); - l[r++] = uid; - } else - r++; - } - -finish: - if (d) - closedir(d); - - if (r >= 0) { - if (users) - *users = l; - } else - free(l); - - return r; -} - -static inline int MONITOR_TO_FD(sd_login_monitor *m) { - return (int) (unsigned long) m - 1; -} - -static inline sd_login_monitor* FD_TO_MONITOR(int fd) { - return (sd_login_monitor*) (unsigned long) (fd + 1); -} - -_public_ int sd_login_monitor_new(const char *category, sd_login_monitor **m) { - int fd, k; - bool good = false; - - if (!m) - return -EINVAL; - - fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC); - if (fd < 0) - return errno; - - if (!category || streq(category, "seat")) { - k = inotify_add_watch(fd, "/run/systemd/seats/", IN_MOVED_TO|IN_DELETE); - if (k < 0) { - close_nointr_nofail(fd); - return -errno; - } - - good = true; - } - - if (!category || streq(category, "session")) { - k = inotify_add_watch(fd, "/run/systemd/sessions/", IN_MOVED_TO|IN_DELETE); - if (k < 0) { - close_nointr_nofail(fd); - return -errno; - } - - good = true; - } - - if (!category || streq(category, "uid")) { - k = inotify_add_watch(fd, "/run/systemd/users/", IN_MOVED_TO|IN_DELETE); - if (k < 0) { - close_nointr_nofail(fd); - return -errno; - } - - good = true; - } - - if (!good) { - close_nointr(fd); - return -EINVAL; - } - - *m = FD_TO_MONITOR(fd); - return 0; -} - -_public_ sd_login_monitor* sd_login_monitor_unref(sd_login_monitor *m) { - int fd; - - if (!m) - return NULL; - - fd = MONITOR_TO_FD(m); - close_nointr(fd); - - return NULL; -} - -_public_ int sd_login_monitor_flush(sd_login_monitor *m) { - - if (!m) - return -EINVAL; - - return flush_fd(MONITOR_TO_FD(m)); -} - -_public_ int sd_login_monitor_get_fd(sd_login_monitor *m) { - - if (!m) - return -EINVAL; - - return MONITOR_TO_FD(m); -} |