We only mount "/usr" and entries marked with "x-initrd.mount".
This (together with the right unit files) is needed in the initramfs in order to
natively support mounting /usr (and friends) from the initramfs.
The way it is meant to work is:
* wait for sysroot.mount to be mounted
* do a daemon-reload to generate sysroot-usr.mount (++) from /sysroot/etc/fstab
* wait for sysroot-usr.mount to be mounted
* switch-root
Cc: Harald Hoyer <harald.hoyer@gmail.com>
Cc: Dave Reisner <d@falconindy.com>
fstype_is_network(me->mnt_type);
}
fstype_is_network(me->mnt_type);
}
+static bool mount_in_initrd(struct mntent *me) {
+ assert(me);
+
+ return
+ hasmntopt(me, "x-initrd.mount") ||
+ streq(me->mnt_dir, "/usr");
+}
+
static int add_mount(const char *what, const char *where, const char *type, const char *opts,
int passno, bool noauto, bool nofail, bool automount, bool isbind, bool isnetwork,
const char *source) {
static int add_mount(const char *what, const char *where, const char *type, const char *opts,
int passno, bool noauto, bool nofail, bool automount, bool isbind, bool isnetwork,
const char *source) {
fprintf(f,
"# Automatically generated by systemd-fstab-generator\n\n"
"[Unit]\n"
fprintf(f,
"# Automatically generated by systemd-fstab-generator\n\n"
"[Unit]\n"
- "SourcePath=/etc/fstab\n"
"DefaultDependencies=no\n"
"Conflicts=" SPECIAL_UMOUNT_TARGET "\n"
"Before=" SPECIAL_UMOUNT_TARGET " %s\n"
"\n"
"[Automount]\n"
"Where=%s\n",
"DefaultDependencies=no\n"
"Conflicts=" SPECIAL_UMOUNT_TARGET "\n"
"Before=" SPECIAL_UMOUNT_TARGET " %s\n"
"\n"
"[Automount]\n"
"Where=%s\n",
-static int parse_fstab(void) {
+static int parse_fstab(const char *prefix, bool initrd) {
+ _cleanup_free_ char *fstab_path = NULL;
int r = 0;
struct mntent *me;
errno = 0;
int r = 0;
struct mntent *me;
errno = 0;
- f = setmntent("/etc/fstab", "r");
+ fstab_path = strjoin(prefix, "/etc/fstab", NULL);
+ f = setmntent(fstab_path, "r");
if (!f) {
if (errno == ENOENT)
return 0;
if (!f) {
if (errno == ENOENT)
return 0;
- log_error("Failed to open /etc/fstab: %m");
+ log_error("Failed to open %s/etc/fstab: %m", prefix);
char _cleanup_free_ *where = NULL, *what = NULL;
int k;
char _cleanup_free_ *where = NULL, *what = NULL;
int k;
+ if (initrd && !mount_in_initrd(me))
+ continue;
+
what = fstab_node_to_udev_node(me->mnt_fsname);
what = fstab_node_to_udev_node(me->mnt_fsname);
- where = strdup(me->mnt_dir);
+ where = strjoin(prefix, me->mnt_dir, NULL);
if (!what || !where) {
r = log_oom();
goto finish;
if (!what || !where) {
r = log_oom();
goto finish;
k = add_mount(what, where, me->mnt_type, me->mnt_opts,
me->mnt_passno, noauto, nofail, automount,
k = add_mount(what, where, me->mnt_type, me->mnt_opts,
me->mnt_passno, noauto, nofail, automount,
- isbind, isnetwork, "/etc/fstab");
+ isbind, isnetwork, fstab_path);
}
int main(int argc, char *argv[]) {
}
int main(int argc, char *argv[]) {
if (argc > 1 && argc != 4) {
log_error("This program takes three or no arguments.");
if (argc > 1 && argc != 4) {
log_error("This program takes three or no arguments.");
return EXIT_FAILURE;
if (in_initrd())
return EXIT_FAILURE;
if (in_initrd())
- k = parse_new_root_from_proc_cmdline();
+ r = parse_new_root_from_proc_cmdline();
+ return (r < 0) ? EXIT_FAILURE : EXIT_SUCCESS;
+ k = parse_fstab("", false);
+
+ if (in_initrd())
+ l = parse_fstab("/sysroot", true);
- return (r < 0) || (k < 0) ? EXIT_FAILURE : EXIT_SUCCESS;
+ return (r < 0) || (k < 0) || (l < 0) ? EXIT_FAILURE : EXIT_SUCCESS;