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fsck: consider a fsck implementation linked to /bin/true non-existant

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This commit is contained in:
Lennart Poettering 2014-06-24 19:37:22 +02:00
parent fbe1a1a94f
commit 571d0134bd
3 changed files with 30 additions and 14 deletions
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14
src/fsck/fsck.c
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@ -302,15 +302,11 @@ int main(int argc, char *argv[]) {
type = udev_device_get_property_value(udev_device, "ID_FS_TYPE"); type = udev_device_get_property_value(udev_device, "ID_FS_TYPE");
if (type) { if (type) {
r = fsck_exists(type); r = fsck_exists(type);
if (r < 0) { if (r == -ENOENT) {
if (r == -ENOENT) { log_info("fsck.%s doesn't exist, not checking file system on %s", type, device);
log_info("fsck.%s doesn't exist, not checking file system on %s", return EXIT_SUCCESS;
type, device); } else if (r < 0)
return EXIT_SUCCESS; log_warning("fsck.%s cannot be used for %s: %s", type, device, strerror(-r));
} else
log_warning("fsck.%s cannot be used for %s: %s",
type, device, strerror(-r));
}
} }
if (arg_show_progress) if (arg_show_progress)

9
src/shared/generator.c
View File

@ -49,10 +49,13 @@ int generator_write_fsck_deps(
if (!isempty(fstype) && !streq(fstype, "auto")) { if (!isempty(fstype) && !streq(fstype, "auto")) {
int r; int r;
r = fsck_exists(fstype); r = fsck_exists(fstype);
if (r < 0) { if (r == -ENOENT) {
log_warning("Checking was requested for %s, but fsck.%s cannot be used: %s", what, fstype, strerror(-r));
/* treat missing check as essentially OK */ /* treat missing check as essentially OK */
return r == -ENOENT ? 0 : r; log_debug("Checking was requested for %s, but fsck.%s does not exist: %s", what, fstype, strerror(-r));
return 0;
} else if (r < 0) {
log_warning("Checking was requested for %s, but fsck.%s cannot be used: %s", what, fstype, strerror(-r));
return r;
} }
} }

21
src/shared/path-util.c
View File

@ -541,7 +541,7 @@ int path_is_os_tree(const char *path) {
int find_binary(const char *name, char **filename) { int find_binary(const char *name, char **filename) {
assert(name); assert(name);
if (strchr(name, '/')) { if (is_path(name)) {
if (access(name, X_OK) < 0) if (access(name, X_OK) < 0)
return -errno; return -errno;
@ -626,8 +626,25 @@ bool paths_check_timestamp(const char* const* paths, usec_t *timestamp, bool upd
} }
int fsck_exists(const char *fstype) { int fsck_exists(const char *fstype) {
_cleanup_free_ char *p = NULL, *d = NULL;
const char *checker; const char *checker;
int r;
checker = strappenda("fsck.", fstype); checker = strappenda("fsck.", fstype);
return find_binary(checker, NULL);
r = find_binary(checker, &p);
if (r < 0)
return r;
/* An fsck that is linked to /bin/true is a non-existant
* fsck */
r = readlink_malloc(p, &d);
if (r >= 0 &&
(path_equal(d, "/bin/true") ||
path_equal(d, "/usr/bin/true") ||
path_equal(d, "/dev/null")))
return -ENOENT;
return 0;
} }