/*** This file is part of systemd. Copyright 2014 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 <unistd.h> #include "alloc-util.h" #include "dropin.h" #include "escape.h" #include "fd-util.h" #include "fileio.h" #include "fstab-util.h" #include "generator.h" #include "log.h" #include "macro.h" #include "mkdir.h" #include "path-util.h" #include "special.h" #include "string-util.h" #include "time-util.h" #include "unit-name.h" #include "util.h" static int write_fsck_sysroot_service(const char *dir, const char *what) { _cleanup_free_ char *device = NULL, *escaped = NULL; _cleanup_fclose_ FILE *f = NULL; const char *unit; int r; escaped = cescape(what); if (!escaped) return log_oom(); unit = strjoina(dir, "/systemd-fsck-root.service"); log_debug("Creating %s", unit); r = unit_name_from_path(what, ".device", &device); if (r < 0) return log_error_errno(r, "Failed to convert device \"%s\" to unit name: %m", what); f = fopen(unit, "wxe"); if (!f) return log_error_errno(errno, "Failed to create unit file %s: %m", unit); fprintf(f, "# Automatically generated by %1$s\n\n" "[Unit]\n" "Documentation=man:systemd-fsck-root.service(8)\n" "Description=File System Check on %2$s\n" "DefaultDependencies=no\n" "BindsTo=%3$s\n" "After=%3$s local-fs-pre.target\n" "Before=shutdown.target\n" "\n" "[Service]\n" "Type=oneshot\n" "RemainAfterExit=yes\n" "ExecStart=" SYSTEMD_FSCK_PATH " %4$s\n" "TimeoutSec=0\n", program_invocation_short_name, what, device, escaped); r = fflush_and_check(f); if (r < 0) return log_error_errno(r, "Failed to write unit file %s: %m", unit); return 0; } int generator_write_fsck_deps( FILE *f, const char *dir, const char *what, const char *where, const char *fstype) { int r; assert(f); assert(dir); assert(what); assert(where); if (!is_device_path(what)) { log_warning("Checking was requested for \"%s\", but it is not a device.", what); return 0; } if (!isempty(fstype) && !streq(fstype, "auto")) { r = fsck_exists(fstype); if (r < 0) log_warning_errno(r, "Checking was requested for %s, but couldn't detect if fsck.%s may be used, proceeding: %m", what, fstype); else if (r == 0) { /* treat missing check as essentially OK */ log_debug("Checking was requested for %s, but fsck.%s does not exist.", what, fstype); return 0; } } if (path_equal(where, "/")) { const char *lnk; lnk = strjoina(dir, "/" SPECIAL_LOCAL_FS_TARGET ".wants/systemd-fsck-root.service"); mkdir_parents(lnk, 0755); if (symlink(SYSTEM_DATA_UNIT_PATH "/systemd-fsck-root.service", lnk) < 0) return log_error_errno(errno, "Failed to create symlink %s: %m", lnk); } else { _cleanup_free_ char *_fsck = NULL; const char *fsck; if (in_initrd() && path_equal(where, "/sysroot")) { r = write_fsck_sysroot_service(dir, what); if (r < 0) return r; fsck = "systemd-fsck-root.service"; } else { r = unit_name_from_path_instance("systemd-fsck", what, ".service", &_fsck); if (r < 0) return log_error_errno(r, "Failed to create fsck service name: %m"); fsck = _fsck; } fprintf(f, "Requires=%1$s\n" "After=%1$s\n", fsck); } return 0; } int generator_write_timeouts( const char *dir, const char *what, const char *where, const char *opts, char **filtered) { /* Allow configuration how long we wait for a device that * backs a mount point to show up. This is useful to support * endless device timeouts for devices that show up only after * user input, like crypto devices. */ _cleanup_free_ char *node = NULL, *unit = NULL, *timeout = NULL; usec_t u; int r; r = fstab_filter_options(opts, "comment=systemd.device-timeout\0" "x-systemd.device-timeout\0", NULL, &timeout, filtered); if (r <= 0) return r; r = parse_sec(timeout, &u); if (r < 0) { log_warning("Failed to parse timeout for %s, ignoring: %s", where, timeout); return 0; } node = fstab_node_to_udev_node(what); if (!node) return log_oom(); r = unit_name_from_path(node, ".device", &unit); if (r < 0) return log_error_errno(r, "Failed to make unit name from path: %m"); return write_drop_in_format(dir, unit, 50, "device-timeout", "# Automatically generated by %s\n\n" "[Unit]\nJobTimeoutSec=%s", program_invocation_short_name, timeout); }