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fsck,fstab-generator: be lenient about missing fsck.<type>

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If fstab contains 1 for passno, treat this as an error, but only warn
briefly. If fstab doesn't contain this information, don't complain at
all.

Patch is complicated a bit by the fact that we might have the fstype specified
in fstab or on /proc/cmdline, in which case we can check if we have the appropriate
fsck tool, or not specified, or specified as auto, in which case we have to look
and check the type of the filesystem ourselves. It cannot be done before the
device appears, so it is too early in the generator phase, and it must be done
directly in fsck service.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2013-11-12 00:53:59 -05:00
parent e375825da0
commit 94192cdaf6
2 changed files with 82 additions and 35 deletions
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40
src/fsck/fsck.c
View File

@ -212,10 +212,11 @@ int main(int argc, char *argv[]) {
siginfo_t status;
_cleanup_udev_unref_ struct udev *udev = NULL;
_cleanup_udev_device_unref_ struct udev_device *udev_device = NULL;
const char *device;
const char *device, *type;
bool root_directory;
int progress_pipe[2] = { -1, -1 };
char dash_c[2+10+1];
struct stat st;
if (argc > 2) {
log_error("This program expects one or no arguments.");
@ -234,11 +235,27 @@ int main(int argc, char *argv[]) {
if (!arg_force && arg_skip)
return 0;
udev = udev_new();
if (!udev) {
log_oom();
return EXIT_FAILURE;
}
if (argc > 1) {
device = argv[1];
root_directory = false;
if (stat(device, &st) < 0) {
log_error("Failed to stat '%s': %m", device);
return EXIT_FAILURE;
}
udev_device = udev_device_new_from_devnum(udev, 'b', st.st_rdev);
if (!udev_device) {
log_error("Failed to detect device %s", device);
return EXIT_FAILURE;
}
} else {
struct stat st;
struct timespec times[2];
/* Find root device */
@ -260,12 +277,6 @@ int main(int argc, char *argv[]) {
return EXIT_SUCCESS;
}
udev = udev_new();
if (!udev) {
log_oom();
return EXIT_FAILURE;
}
udev_device = udev_device_new_from_devnum(udev, 'b', st.st_dev);
if (!udev_device) {
log_error("Failed to detect root device.");
@ -281,6 +292,19 @@ int main(int argc, char *argv[]) {
root_directory = true;
}
type = udev_device_get_property_value(udev_device, "ID_FS_TYPE");
if (type) {
const char *checker = strappenda("/sbin/fsck.", type);
r = access(checker, X_OK);
if (r < 0) {
if (errno == ENOENT) {
log_info("%s doesn't exist, not checking file system.", checker);
return EXIT_SUCCESS;
} else
log_warning("%s cannot be used: %m", checker);
}
}
if (arg_show_progress)
if (pipe(progress_pipe) < 0) {
log_error("pipe(): %m");

77
src/fstab-generator/fstab-generator.c
View File

@ -146,6 +146,52 @@ static bool mount_in_initrd(struct mntent *me) {
streq(me->mnt_dir, "/usr");
}
static int add_fsck(FILE *f, const char *what, const char *where, const char *type, int passno) {
assert(f);
if (passno == 0)
return 0;
if (type && !streq(type, "auto")) {
int r;
const char *checker;
checker = strappenda("/sbin/fsck.", type);
r = access(checker, X_OK);
if (r < 0) {
log_warning("Checking was requested for %s, but %s cannot be used: %m", what, checker);
/* treat missing check as essentially OK */
return errno == ENOENT ? 0 : -errno;
}
}
if (streq(where, "/")) {
char *lnk;
lnk = strappenda(arg_dest, "/" SPECIAL_LOCAL_FS_TARGET ".wants/systemd-fsck-root.service");
mkdir_parents_label(lnk, 0755);
if (symlink("systemd-fsck-root.service", lnk) < 0) {
log_error("Failed to create symlink %s: %m", lnk);
return -errno;
}
} else {
_cleanup_free_ char *fsck = NULL;
fsck = unit_name_from_path_instance("systemd-fsck", what, ".service");
if (!fsck)
return log_oom();
fprintf(f,
"Requires=%s\n"
"After=%s\n",
fsck,
fsck);
}
return 0;
}
static int add_mount(
const char *what,
const char *where,
@ -161,6 +207,7 @@ static int add_mount(
*name = NULL, *unit = NULL, *lnk = NULL,
*automount_name = NULL, *automount_unit = NULL;
_cleanup_fclose_ FILE *f = NULL;
int r;
assert(what);
assert(where);
@ -208,32 +255,9 @@ static int add_mount(
"Before=%s\n",
post);
if (passno > 0) {
if (streq(where, "/")) {
lnk = strjoin(arg_dest, "/", SPECIAL_LOCAL_FS_TARGET, ".wants/", "systemd-fsck-root.service", NULL);
if (!lnk)
return log_oom();
mkdir_parents_label(lnk, 0755);
if (symlink("systemd-fsck-root.service", lnk) < 0) {
log_error("Failed to create symlink %s: %m", lnk);
return -errno;
}
} else {
_cleanup_free_ char *fsck = NULL;
fsck = unit_name_from_path_instance("systemd-fsck", what, ".service");
if (!fsck)
return log_oom();
fprintf(f,
"Requires=%s\n"
"After=%s\n",
fsck,
fsck);
}
}
r = add_fsck(f, what, where, type, passno);
if (r < 0)
return r;
fprintf(f,
"\n"
@ -259,7 +283,6 @@ static int add_mount(
if (!noauto) {
if (post) {
free(lnk);
lnk = strjoin(arg_dest, "/", post, nofail || automount ? ".wants/" : ".requires/", name, NULL);
if (!lnk)
return log_oom();