diff options
Diffstat (limited to 'src/systemd-quotacheck/quotacheck.c')
-rw-r--r-- | src/systemd-quotacheck/quotacheck.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/src/systemd-quotacheck/quotacheck.c b/src/systemd-quotacheck/quotacheck.c new file mode 100644 index 0000000000..6d8c05f046 --- /dev/null +++ b/src/systemd-quotacheck/quotacheck.c @@ -0,0 +1,124 @@ +/*** + 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 <http://www.gnu.org/licenses/>. +***/ + +#include <errno.h> +#include <stdbool.h> +#include <stdio.h> +#include <sys/prctl.h> +#include <unistd.h> + +#include "proc-cmdline.h" +#include "process-util.h" +#include "signal-util.h" +#include "string-util.h" +#include "util.h" + +static bool arg_skip = false; +static bool arg_force = false; + +static int parse_proc_cmdline_item(const char *key, const char *value) { + + if (streq(key, "quotacheck.mode") && value) { + + if (streq(value, "auto")) + arg_force = arg_skip = false; + else if (streq(value, "force")) + arg_force = true; + else if (streq(value, "skip")) + arg_skip = true; + else + log_warning("Invalid quotacheck.mode= parameter '%s'. Ignoring.", value); + } + +#ifdef HAVE_SYSV_COMPAT + else if (streq(key, "forcequotacheck") && !value) { + log_warning("Please use 'quotacheck.mode=force' rather than 'forcequotacheck' on the kernel command line."); + arg_force = true; + } +#endif + + return 0; +} + +static void test_files(void) { + +#ifdef HAVE_SYSV_COMPAT + if (access("/forcequotacheck", F_OK) >= 0) { + log_error("Please pass 'quotacheck.mode=force' on the kernel command line rather than creating /forcequotacheck on the root file system."); + arg_force = true; + } +#endif +} + +int main(int argc, char *argv[]) { + + static const char * const cmdline[] = { + QUOTACHECK, + "-anug", + NULL + }; + + pid_t pid; + int r; + + if (argc > 1) { + log_error("This program takes no arguments."); + return EXIT_FAILURE; + } + + log_set_target(LOG_TARGET_AUTO); + log_parse_environment(); + log_open(); + + umask(0022); + + r = parse_proc_cmdline(parse_proc_cmdline_item); + if (r < 0) + log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m"); + + test_files(); + + if (!arg_force) { + if (arg_skip) + return EXIT_SUCCESS; + + if (access("/run/systemd/quotacheck", F_OK) < 0) + return EXIT_SUCCESS; + } + + pid = fork(); + if (pid < 0) { + log_error_errno(errno, "fork(): %m"); + return EXIT_FAILURE; + } else if (pid == 0) { + + /* Child */ + + (void) reset_all_signal_handlers(); + (void) reset_signal_mask(); + assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0); + + execv(cmdline[0], (char**) cmdline); + _exit(1); /* Operational error */ + } + + r = wait_for_terminate_and_warn("quotacheck", pid, true); + + return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; +} |