X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Flogin%2Fuser-sessions.c;h=ca5de41f40277113244fc118f60e0e703b780999;hp=18066ccc39f1c05e2a0498212aec2f73e5e5ec25;hb=638ca89c53e2b897cfb3f627f4acbc7d09af2f4c;hpb=9444b1f20e311f073864d81e913bd4f32fe95cfd diff --git a/src/login/user-sessions.c b/src/login/user-sessions.c index 18066ccc3..ca5de41f4 100644 --- a/src/login/user-sessions.c +++ b/src/login/user-sessions.c @@ -25,111 +25,9 @@ #include "log.h" #include "util.h" -#include "cgroup-util.h" #include "fileio.h" -static int kill_all_users(void) { - _cleanup_closedir_ DIR *d = NULL; - struct dirent *de; - int r = 0; - - d = opendir("/run/systemd/users"); - if (!d) { - if (errno == ENOENT) - return 0; - - log_error("Failed to open /run/systemd/users: %m"); - return -errno; - } - - FOREACH_DIRENT(de, d, return -errno) { - _cleanup_free_ char *cgroup = NULL; - char *a; - int k; - - if (!dirent_is_file(de)) - continue; - - a = strappenda("/run/systemd/users/", de->d_name); - - k = parse_env_file(a, NEWLINE, "CGROUP", &cgroup, NULL); - if (k < 0) { - if (k != -ENOENT) { - log_error("Failed to read user data: %s", strerror(-k)); - r = k; - } - - continue; - } - - if (!cgroup) { - log_error("User data did not contain cgroup field."); - r = -ENOENT; - continue; - } - - k = cg_kill_recursive_and_wait(SYSTEMD_CGROUP_CONTROLLER, cgroup, true); - if (k < 0) { - log_error("Failed to kill cgroup %s: %s", cgroup, strerror(-k)); - r = k; - } - } - - return r; -} - -static int kill_all_sessions(void) { - _cleanup_closedir_ DIR *d = NULL; - struct dirent *de; - int r = 0; - - d = opendir("/run/systemd/sessions"); - if (!d) { - if (errno == ENOENT) - return 0; - - log_error("Failed to open /run/systemd/sessions: %m"); - return -errno; - } - - FOREACH_DIRENT(de, d, return -errno) { - _cleanup_free_ char *cgroup = NULL; - char *a; - int k; - - if (!dirent_is_file(de)) - continue; - - a = strappenda("/run/systemd/sessions/", de->d_name); - - k = parse_env_file(a, NEWLINE, "CGROUP", &cgroup, NULL); - if (k < 0) { - if (k != -ENOENT) { - log_error("Failed to read session data: %s", strerror(-k)); - r = k; - } - - continue; - } - - if (!cgroup) { - log_error("Session data did not contain cgroup field."); - r = -ENOENT; - continue; - } - - k = cg_kill_recursive_and_wait(SYSTEMD_CGROUP_CONTROLLER, cgroup, true); - if (k < 0) { - log_error("Failed to kill cgroup %s: %s", cgroup, strerror(-k)); - r = k; - } - } - - return r; -} - int main(int argc, char*argv[]) { - int ret = EXIT_FAILURE; if (argc != 2) { log_error("This program requires one argument."); @@ -143,7 +41,7 @@ int main(int argc, char*argv[]) { umask(0022); if (streq(argv[1], "start")) { - int q = 0, r = 0; + int r = 0; if (unlink("/run/nologin") < 0 && errno != ENOENT) { log_error("Failed to remove /run/nologin file: %m"); @@ -151,7 +49,6 @@ int main(int argc, char*argv[]) { } if (unlink("/etc/nologin") < 0 && errno != ENOENT) { - /* If the file doesn't exist and /etc simply * was read-only (in which case unlink() * returns EROFS even if the file doesn't @@ -159,35 +56,26 @@ int main(int argc, char*argv[]) { if (errno != EROFS || access("/etc/nologin", F_OK) >= 0) { log_error("Failed to remove /etc/nologin file: %m"); - q = -errno; + return EXIT_FAILURE; } } - if (r < 0 || q < 0) - goto finish; + if (r < 0) + return EXIT_FAILURE; } else if (streq(argv[1], "stop")) { - int r, q; + int r; r = write_string_file_atomic("/run/nologin", "System is going down."); - if (r < 0) + if (r < 0) { log_error("Failed to create /run/nologin: %s", strerror(-r)); - - q = kill_all_users(); - if (q < 0 && r >= 0) - r = q; - - q = kill_all_sessions(); - if (q < 0 && r >= 0) - r = q; + return EXIT_FAILURE; + } } else { log_error("Unknown verb %s.", argv[1]); - goto finish; + return EXIT_FAILURE; } - ret = EXIT_SUCCESS; - -finish: - return ret; + return EXIT_SUCCESS; }