static int parse_fstab(void) {
FILE *f;
int r = 0;
struct mntent *me;
errno = 0;
f = setmntent("/etc/fstab", "r");
if (!f) {
if (errno == ENOENT)
return 0;
log_error("Failed to open /etc/fstab: %m");
return -errno;
}
while ((me = getmntent(f))) {
char _cleanup_free_ *where = NULL, *what = NULL;
int k;
what = fstab_node_to_udev_node(me->mnt_fsname);
where = strdup(me->mnt_dir);
if (!what || !where) {
r = log_oom();
goto finish;
}
if (is_path(where))
path_kill_slashes(where);
log_debug("Found entry what=%s where=%s type=%s", what, where, me->mnt_type);
if (streq(me->mnt_type, "swap"))
k = add_swap(what, me);
else {
bool noauto, nofail, automount, isbind, isnetwork;
noauto = !!hasmntopt(me, "noauto");
nofail = !!hasmntopt(me, "nofail");
automount =
hasmntopt(me, "comment=systemd.automount") ||
hasmntopt(me, "x-systemd.automount");
isbind = mount_is_bind(me);
isnetwork = mount_is_network(me);
k = add_mount(what, where, me->mnt_type, me->mnt_opts,
me->mnt_passno, false, noauto, nofail,
automount, isbind, isnetwork,
"/etc/fstab");
}
if (k < 0)
r = k;
}
finish:
endmntent(f);
return r;
}
static int parse_fstab(const char *prefix, bool initrd) {
_cleanup_free_ char *fstab_path = NULL;
FILE *f;
int r = 0;
struct mntent *me;
fstab_path = strjoin(strempty(prefix), "/etc/fstab", NULL);
if (!fstab_path)
return log_oom();
f = setmntent(fstab_path, "r");
if (!f) {
if (errno == ENOENT)
return 0;
log_error("Failed to open %s/etc/fstab: %m", strempty(prefix));
return -errno;
}
while ((me = getmntent(f))) {
_cleanup_free_ char *where = NULL, *what = NULL;
int k;
if (initrd && !mount_in_initrd(me))
continue;
what = fstab_node_to_udev_node(me->mnt_fsname);
where = strjoin(strempty(prefix), me->mnt_dir, NULL);
if (!what || !where) {
r = log_oom();
goto finish;
}
if (is_path(where))
path_kill_slashes(where);
log_debug("Found entry what=%s where=%s type=%s", what, where, me->mnt_type);
if (streq(me->mnt_type, "swap"))
k = add_swap(what, me);
else {
bool noauto, nofail, automount, isbind;
const char *pre, *pre2, *post, *online;
noauto = !!hasmntopt(me, "noauto");
nofail = !!hasmntopt(me, "nofail");
automount =
hasmntopt(me, "comment=systemd.automount") ||
hasmntopt(me, "x-systemd.automount");
isbind = mount_is_bind(me);
if (initrd) {
pre = pre2 = online = NULL;
post = SPECIAL_INITRD_FS_TARGET;
} else if (mount_in_initrd(me)) {
pre = pre2 = online = NULL;
post = SPECIAL_INITRD_ROOT_FS_TARGET;
} else if (mount_is_network(me)) {
pre = SPECIAL_REMOTE_FS_PRE_TARGET;
pre2 = SPECIAL_NETWORK_TARGET;
online = SPECIAL_NETWORK_ONLINE_TARGET;
post = SPECIAL_REMOTE_FS_TARGET;
} else {
pre = SPECIAL_LOCAL_FS_PRE_TARGET;
pre2 = online = NULL;
post = SPECIAL_LOCAL_FS_TARGET;
}
k = add_mount(what, where, me->mnt_type, me->mnt_opts,
me->mnt_passno, noauto, nofail, automount,
isbind, pre, pre2, online, post, fstab_path);
}
if (k < 0)
r = k;
}
finish:
endmntent(f);
return r;
}
static int parse_fstab(bool initrd) {
_cleanup_endmntent_ FILE *f = NULL;
const char *fstab_path;
struct mntent *me;
int r = 0;
fstab_path = initrd ? "/sysroot/etc/fstab" : "/etc/fstab";
f = setmntent(fstab_path, "re");
if (!f) {
if (errno == ENOENT)
return 0;
log_error_errno(errno, "Failed to open %s: %m", fstab_path);
return -errno;
}
while ((me = getmntent(f))) {
_cleanup_free_ char *where = NULL, *what = NULL;
bool noauto, nofail;
int k;
if (initrd && !mount_in_initrd(me))
continue;
what = fstab_node_to_udev_node(me->mnt_fsname);
if (!what)
return log_oom();
if (is_device_path(what) && path_is_read_only_fs("sys") > 0) {
log_info("Running in a container, ignoring fstab device entry for %s.", what);
continue;
}
where = initrd ? strappend("/sysroot/", me->mnt_dir) : strdup(me->mnt_dir);
if (!where)
return log_oom();
if (is_path(where))
path_kill_slashes(where);
noauto = fstab_test_yes_no_option(me->mnt_opts, "noauto\0" "auto\0");
nofail = fstab_test_yes_no_option(me->mnt_opts, "nofail\0" "fail\0");
log_debug("Found entry what=%s where=%s type=%s nofail=%s noauto=%s",
what, where, me->mnt_type,
yes_no(noauto), yes_no(nofail));
if (streq(me->mnt_type, "swap"))
k = add_swap(what, me, noauto, nofail);
else {
bool automount;
const char *post;
automount = fstab_test_option(me->mnt_opts,
"comment=systemd.automount\0"
"x-systemd.automount\0");
if (initrd)
post = SPECIAL_INITRD_FS_TARGET;
else if (mount_in_initrd(me))
post = SPECIAL_INITRD_ROOT_FS_TARGET;
else if (mount_is_network(me))
post = SPECIAL_REMOTE_FS_TARGET;
else
post = SPECIAL_LOCAL_FS_TARGET;
k = add_mount(what,
where,
me->mnt_type,
me->mnt_opts,
me->mnt_passno,
noauto,
nofail,
automount,
post,
fstab_path);
}
if (k < 0)
r = k;
}
return r;
}
static int add_mount(const char *what, const char *where, struct mntent *me) {
char *name = NULL, *unit = NULL, *lnk = NULL, *device = NULL, *automount_name = NULL, *automount_unit = NULL;
FILE *f = NULL;
bool noauto, nofail, automount, isbind, isnetwork;
int r;
const char *post, *pre;
assert(what);
assert(where);
assert(me);
if (streq(me->mnt_type, "autofs"))
return 0;
if (!is_path(where)) {
log_warning("Mount point %s is not a valid path, ignoring.", where);
return 0;
}
if (mount_point_is_api(where) ||
mount_point_ignore(where))
return 0;
isnetwork = mount_is_network(me);
isbind = mount_is_bind(me);
noauto = !!hasmntopt(me, "noauto");
nofail = !!hasmntopt(me, "nofail");
automount =
hasmntopt(me, "comment=systemd.automount") ||
hasmntopt(me, "x-systemd.automount");
if (isnetwork) {
post = SPECIAL_REMOTE_FS_TARGET;
pre = SPECIAL_REMOTE_FS_PRE_TARGET;
} else {
post = SPECIAL_LOCAL_FS_TARGET;
pre = SPECIAL_LOCAL_FS_PRE_TARGET;
}
name = unit_name_from_path(where, ".mount");
if (!name) {
r = log_oom();
goto finish;
}
unit = strjoin(arg_dest, "/", name, NULL);
if (!unit) {
r = log_oom();
goto finish;
}
f = fopen(unit, "wxe");
if (!f) {
r = -errno;
log_error("Failed to create unit file: %m");
goto finish;
}
fputs("# Automatically generated by systemd-fstab-generator\n\n"
"[Unit]\n"
"SourcePath=/etc/fstab\n"
"DefaultDependencies=no\n", f);
if (!path_equal(where, "/"))
fprintf(f,
"After=%s\n"
"Wants=%s\n"
"Conflicts=" SPECIAL_UMOUNT_TARGET "\n"
"Before=" SPECIAL_UMOUNT_TARGET "\n",
pre,
pre);
if (!noauto && !nofail && !automount)
fprintf(f,
"Before=%s\n",
post);
fprintf(f,
"\n"
"[Mount]\n"
"What=%s\n"
"Where=%s\n"
"Type=%s\n"
"FsckPassNo=%i\n",
what,
where,
me->mnt_type,
me->mnt_passno);
if (!isempty(me->mnt_opts) &&
!streq(me->mnt_opts, "defaults"))
fprintf(f,
"Options=%s\n",
me->mnt_opts);
fflush(f);
if (ferror(f)) {
log_error("Failed to write unit file: %m");
r = -errno;
goto finish;
}
if (!noauto) {
lnk = strjoin(arg_dest, "/", post, nofail || automount ? ".wants/" : ".requires/", name, NULL);
if (!lnk) {
r = log_oom();
goto finish;
}
mkdir_parents_label(lnk, 0755);
if (symlink(unit, lnk) < 0) {
log_error("Failed to create symlink: %m");
r = -errno;
goto finish;
}
if (!isbind &&
!path_equal(where, "/")) {
r = device_name(what, &device);
if (r < 0)
goto finish;
if (r > 0) {
free(lnk);
lnk = strjoin(arg_dest, "/", device, ".wants/", name, NULL);
if (!lnk) {
r = log_oom();
goto finish;
}
mkdir_parents_label(lnk, 0755);
if (symlink(unit, lnk) < 0) {
log_error("Failed to create symlink: %m");
r = -errno;
goto finish;
}
}
}
}
if (automount && !path_equal(where, "/")) {
automount_name = unit_name_from_path(where, ".automount");
if (!name) {
r = log_oom();
goto finish;
}
automount_unit = strjoin(arg_dest, "/", automount_name, NULL);
if (!automount_unit) {
r = log_oom();
goto finish;
}
fclose(f);
f = fopen(automount_unit, "wxe");
if (!f) {
r = -errno;
log_error("Failed to create unit file: %m");
goto finish;
}
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",
post,
where);
fflush(f);
if (ferror(f)) {
log_error("Failed to write unit file: %m");
r = -errno;
goto finish;
}
free(lnk);
lnk = strjoin(arg_dest, "/", post, nofail ? ".wants/" : ".requires/", automount_name, NULL);
if (!lnk) {
r = log_oom();
goto finish;
}
mkdir_parents_label(lnk, 0755);
if (symlink(automount_unit, lnk) < 0) {
log_error("Failed to create symlink: %m");
r = -errno;
goto finish;
}
}
r = 0;
finish:
if (f)
fclose(f);
free(unit);
free(lnk);
free(name);
free(device);
free(automount_name);
free(automount_unit);
return r;
}
