/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ /*** 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 <stdio.h> #include <stdbool.h> #include <string.h> #include <errno.h> #include <unistd.h> #include "util.h" #include "virt.h" #include "fileio.h" static bool arg_skip = false; static bool arg_force = false; static int parse_proc_cmdline(void) { char *line, *w, *state; int r; size_t l; if (detect_container(NULL) > 0) return 0; if ((r = read_one_line_file("/proc/cmdline", &line)) < 0) { log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r)); return 0; } FOREACH_WORD_QUOTED(w, l, line, state) { if (strneq(w, "quotacheck.mode=auto", l)) arg_force = arg_skip = false; else if (strneq(w, "quotacheck.mode=force", l)) arg_force = true; else if (strneq(w, "quotacheck.mode=skip", l)) arg_skip = true; else if (startswith(w, "quotacheck")) log_warning("Invalid quotacheck parameter. Ignoring."); #ifdef HAVE_SYSV_COMPAT else if (strneq(w, "forcequotacheck", l)) { log_error("Please use 'quotacheck.mode=force' rather than 'forcequotacheck' on the kernel command line."); arg_force = true; } #endif } free(line); 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[] = { "/sbin/quotacheck", "-anug", NULL }; int r = EXIT_FAILURE; pid_t pid; 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); parse_proc_cmdline(); test_files(); if (!arg_force) { if (arg_skip) return 0; if (access("/run/systemd/quotacheck", F_OK) < 0) return 0; } if ((pid = fork()) < 0) { log_error("fork(): %m"); goto finish; } else if (pid == 0) { /* Child */ execv(cmdline[0], (char**) cmdline); _exit(1); /* Operational error */ } r = wait_for_terminate_and_warn("quotacheck", pid) == 0 ? EXIT_SUCCESS : EXIT_FAILURE; finish: return r; }