From 7ad5d6bf5d7fcc61eace7e933b305f69d439fcc9 Mon Sep 17 00:00:00 2001 From: Luke Shumaker Date: Wed, 10 May 2017 15:51:29 -0400 Subject: ./tools/notsd-move --- .../systemd-user-sessions/user-sessions.c | 84 ++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 src/grp-initprogs/systemd-user-sessions/user-sessions.c (limited to 'src/grp-initprogs/systemd-user-sessions/user-sessions.c') diff --git a/src/grp-initprogs/systemd-user-sessions/user-sessions.c b/src/grp-initprogs/systemd-user-sessions/user-sessions.c new file mode 100644 index 0000000000..3ccb419aee --- /dev/null +++ b/src/grp-initprogs/systemd-user-sessions/user-sessions.c @@ -0,0 +1,84 @@ +/*** + This file is part of systemd. + + Copyright 2010 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see . +***/ + +#include +#include + +#include "systemd-basic/fileio-label.h" +#include "systemd-basic/fileio.h" +#include "systemd-basic/log.h" +#include "systemd-basic/selinux-util.h" +#include "systemd-basic/string-util.h" +#include "systemd-basic/util.h" + +int main(int argc, char*argv[]) { + + if (argc != 2) { + log_error("This program requires one argument."); + return EXIT_FAILURE; + } + + log_set_target(LOG_TARGET_AUTO); + log_parse_environment(); + log_open(); + + umask(0022); + + mac_selinux_init(); + + if (streq(argv[1], "start")) { + int r = 0; + + if (unlink("/run/nologin") < 0 && errno != ENOENT) + r = log_error_errno(errno, + "Failed to remove /run/nologin file: %m"); + + 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 + * exist), don't complain */ + + if (errno != EROFS || access("/etc/nologin", F_OK) >= 0) { + log_error_errno(errno, "Failed to remove /etc/nologin file: %m"); + return EXIT_FAILURE; + } + } + + if (r < 0) + return EXIT_FAILURE; + + } else if (streq(argv[1], "stop")) { + int r; + + r = write_string_file_atomic_label("/run/nologin", "System is going down."); + if (r < 0) { + log_error_errno(r, "Failed to create /run/nologin: %m"); + return EXIT_FAILURE; + } + + } else { + log_error("Unknown verb %s.", argv[1]); + return EXIT_FAILURE; + } + + mac_selinux_finish(); + + return EXIT_SUCCESS; +} -- cgit v1.2.3-54-g00ecf