| /*** |
| 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$s\n" |
| "After=initrd-root-device.target local-fs-pre.target %3$s\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); |
| } |
| |
| int generator_write_initrd_root_device_deps(const char *dir, const char *what) { |
| _cleanup_free_ char *unit = NULL; |
| int r; |
| |
| r = unit_name_from_path(what, ".device", &unit); |
| if (r < 0) |
| return log_error_errno(r, "Failed to make unit name from path: %m"); |
| |
| return write_drop_in_format(dir, SPECIAL_INITRD_ROOT_DEVICE_TARGET, 50, "root-device", |
| "# Automatically generated by %s\n\n" |
| "[Unit]\nRequires=%s\nAfter=%s", |
| program_invocation_short_name, unit, unit); |
| } |