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,
const char *pre,
const char *pre2,
const char *online,
const char *post,
const char *source) {
_cleanup_free_ char
*name = NULL, *unit = NULL, *lnk = NULL, *device = NULL,
*automount_name = NULL, *automount_unit = NULL;
_cleanup_fclose_ FILE *f = NULL;
int r;
assert(what);
assert(where);
assert(type);
assert(opts);
assert(source);
if (streq(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;
name = unit_name_from_path(where, ".mount");
if (!name)
return log_oom();
unit = strjoin(arg_dest, "/", name, NULL);
if (!unit)
return log_oom();
f = fopen(unit, "wxe");
if (!f) {
if (errno == EEXIST)
log_error("Failed to create mount unit file %s, as it already exists. Duplicate entry in /etc/fstab?", unit);
else
log_error("Failed to create unit file %s: %m", unit);
return -errno;
}
fprintf(f,
"# Automatically generated by systemd-fstab-generator\n\n"
"[Unit]\n"
"SourcePath=%s\n"
"DefaultDependencies=no\n",
source);
if (!path_equal(where, "/")) {
if (pre)
fprintf(f,
"After=%s\n",
pre);
if (pre2)
fprintf(f,
"After=%s\n",
pre2);
if (online)
fprintf(f,
"After=%s\n"
"Wants=%s\n",
online,
online);
fprintf(f,
"Conflicts=" SPECIAL_UMOUNT_TARGET "\n"
"Before=" SPECIAL_UMOUNT_TARGET "\n");
}
if (post && !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,
type,
passno);
if (!isempty(opts) &&
!streq(opts, "defaults"))
fprintf(f,
"Options=%s\n",
opts);
fflush(f);
if (ferror(f)) {
log_error("Failed to write unit file %s: %m", unit);
return -errno;
}
if (!noauto) {
/* don't start network mounts automatically, we do that via ifupdown hooks for now */
if (post && !streq(post, SPECIAL_REMOTE_FS_TARGET)) {
lnk = strjoin(arg_dest, "/", post, nofail || automount ? ".wants/" : ".requires/", name, NULL);
if (!lnk)
return log_oom();
mkdir_parents_label(lnk, 0755);
if (symlink(unit, lnk) < 0) {
log_error("Failed to create symlink %s: %m", lnk);
return -errno;
}
}
if (!isbind &&
!path_equal(where, "/")) {
r = device_name(what, &device);
if (r < 0)
return r;
if (r > 0) {
free(lnk);
lnk = strjoin(arg_dest, "/", device, ".wants/", name, NULL);
if (!lnk)
return log_oom();
mkdir_parents_label(lnk, 0755);
if (symlink(unit, lnk) < 0) {
log_error("Failed to create symlink %s: %m", lnk);
return -errno;
}
}
}
}
if (automount && !path_equal(where, "/")) {
automount_name = unit_name_from_path(where, ".automount");
if (!name)
return log_oom();
automount_unit = strjoin(arg_dest, "/", automount_name, NULL);
if (!automount_unit)
return log_oom();
fclose(f);
f = fopen(automount_unit, "wxe");
if (!f) {
log_error("Failed to create unit file %s: %m", automount_unit);
return -errno;
}
fprintf(f,
"# Automatically generated by systemd-fstab-generator\n\n"
"[Unit]\n"
"SourcePath=%s\n"
"DefaultDependencies=no\n"
"Conflicts=" SPECIAL_UMOUNT_TARGET "\n"
"Before=" SPECIAL_UMOUNT_TARGET "\n",
source);
if (post)
fprintf(f,
"Before= %s\n",
post);
fprintf(f,
"[Automount]\n"
"Where=%s\n",
where);
fflush(f);
if (ferror(f)) {
log_error("Failed to write unit file %s: %m", automount_unit);
return -errno;
}
free(lnk);
lnk = strjoin(arg_dest, "/", post, nofail ? ".wants/" : ".requires/", automount_name, NULL);
if (!lnk)
return log_oom();
mkdir_parents_label(lnk, 0755);
if (symlink(automount_unit, lnk) < 0) {
log_error("Failed to create symlink %s: %m", lnk);
return -errno;
}
}
return 0;
}
static int add_mount(
const char *what,
const char *where,
const char *fstype,
const char *opts,
int passno,
bool noauto,
bool nofail,
bool automount,
const char *post,
const char *source) {
_cleanup_free_ char
*name = NULL, *unit = NULL, *lnk = NULL,
*automount_name = NULL, *automount_unit = NULL,
*filtered = NULL;
_cleanup_fclose_ FILE *f = NULL;
int r;
assert(what);
assert(where);
assert(opts);
assert(source);
if (streq_ptr(fstype, "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;
if (path_equal(where, "/")) {
/* The root disk is not an option */
automount = false;
noauto = false;
nofail = false;
}
name = unit_name_from_path(where, ".mount");
if (!name)
return log_oom();
unit = strjoin(arg_dest, "/", name, NULL);
if (!unit)
return log_oom();
f = fopen(unit, "wxe");
if (!f) {
if (errno == EEXIST)
log_error("Failed to create mount unit file %s, as it already exists. Duplicate entry in /etc/fstab?", unit);
else
log_error_errno(errno, "Failed to create unit file %s: %m", unit);
return -errno;
}
fprintf(f,
"# Automatically generated by systemd-fstab-generator\n\n"
"[Unit]\n"
"SourcePath=%s\n"
"Documentation=man:fstab(5) man:systemd-fstab-generator(8)\n",
source);
if (post && !noauto && !nofail && !automount)
fprintf(f, "Before=%s\n", post);
if (passno != 0) {
r = generator_write_fsck_deps(f, arg_dest, what, where, fstype);
if (r < 0)
return r;
}
fprintf(f,
"\n"
"[Mount]\n"
"What=%s\n"
"Where=%s\n",
what,
where);
if (!isempty(fstype) && !streq(fstype, "auto"))
fprintf(f, "Type=%s\n", fstype);
r = generator_write_timeouts(arg_dest, what, where, opts, &filtered);
if (r < 0)
return r;
if (!isempty(filtered) && !streq(filtered, "defaults"))
fprintf(f, "Options=%s\n", filtered);
fflush(f);
if (ferror(f))
return log_error_errno(errno, "Failed to write unit file %s: %m", unit);
if (!noauto && post) {
lnk = strjoin(arg_dest, "/", post, nofail || automount ? ".wants/" : ".requires/", name, NULL);
if (!lnk)
return log_oom();
mkdir_parents_label(lnk, 0755);
if (symlink(unit, lnk) < 0)
return log_error_errno(errno, "Failed to create symlink %s: %m", lnk);
}
if (automount) {
automount_name = unit_name_from_path(where, ".automount");
if (!automount_name)
return log_oom();
automount_unit = strjoin(arg_dest, "/", automount_name, NULL);
if (!automount_unit)
return log_oom();
fclose(f);
f = fopen(automount_unit, "wxe");
if (!f)
return log_error_errno(errno, "Failed to create unit file %s: %m", automount_unit);
fprintf(f,
"# Automatically generated by systemd-fstab-generator\n\n"
"[Unit]\n"
"SourcePath=%s\n"
"Documentation=man:fstab(5) man:systemd-fstab-generator(8)\n",
source);
if (post)
fprintf(f,
"Before=%s\n",
post);
fprintf(f,
"[Automount]\n"
"Where=%s\n",
where);
fflush(f);
if (ferror(f))
return log_error_errno(errno, "Failed to write unit file %s: %m", automount_unit);
free(lnk);
lnk = strjoin(arg_dest, "/", post, nofail ? ".wants/" : ".requires/", automount_name, NULL);
if (!lnk)
return log_oom();
mkdir_parents_label(lnk, 0755);
if (symlink(automount_unit, lnk) < 0)
return log_error_errno(errno, "Failed to create symlink %s: %m", lnk);
}
return 0;
}
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;
}
static int add_mount(
const char *what,
const char *where,
const char *type,
const char *opts,
int passno,
bool noauto,
bool nofail,
bool automount,
const char *post,
const char *source) {
_cleanup_free_ char
*name = NULL, *unit = NULL, *lnk = NULL,
*automount_name = NULL, *automount_unit = NULL;
_cleanup_fclose_ FILE *f = NULL;
assert(what);
assert(where);
assert(type);
assert(opts);
assert(source);
if (streq(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;
name = unit_name_from_path(where, ".mount");
if (!name)
return log_oom();
unit = strjoin(arg_dest, "/", name, NULL);
if (!unit)
return log_oom();
f = fopen(unit, "wxe");
if (!f) {
if (errno == EEXIST)
log_error("Failed to create mount unit file %s, as it already exists. Duplicate entry in /etc/fstab?", unit);
else
log_error("Failed to create unit file %s: %m", unit);
return -errno;
}
fprintf(f,
"# Automatically generated by systemd-fstab-generator\n\n"
"[Unit]\n"
"SourcePath=%s\n",
source);
if (post && !noauto && !nofail && !automount)
fprintf(f,
"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);
}
}
fprintf(f,
"\n"
"[Mount]\n"
"What=%s\n"
"Where=%s\n"
"Type=%s\n",
what,
where,
type);
if (!isempty(opts) &&
!streq(opts, "defaults"))
fprintf(f,
"Options=%s\n",
opts);
fflush(f);
if (ferror(f)) {
log_error("Failed to write unit file %s: %m", unit);
return -errno;
}
if (!noauto) {
if (post) {
free(lnk);
lnk = strjoin(arg_dest, "/", post, nofail || automount ? ".wants/" : ".requires/", name, NULL);
if (!lnk)
return log_oom();
mkdir_parents_label(lnk, 0755);
if (symlink(unit, lnk) < 0) {
log_error("Failed to create symlink %s: %m", lnk);
return -errno;
}
}
}
if (automount && !path_equal(where, "/")) {
automount_name = unit_name_from_path(where, ".automount");
if (!automount_name)
return log_oom();
automount_unit = strjoin(arg_dest, "/", automount_name, NULL);
if (!automount_unit)
return log_oom();
fclose(f);
f = fopen(automount_unit, "wxe");
if (!f) {
log_error("Failed to create unit file %s: %m", automount_unit);
return -errno;
}
fprintf(f,
"# Automatically generated by systemd-fstab-generator\n\n"
"[Unit]\n"
"SourcePath=%s\n",
source);
if (post)
fprintf(f,
"Before= %s\n",
post);
fprintf(f,
"[Automount]\n"
"Where=%s\n",
where);
fflush(f);
if (ferror(f)) {
log_error("Failed to write unit file %s: %m", automount_unit);
return -errno;
}
free(lnk);
lnk = strjoin(arg_dest, "/", post, nofail ? ".wants/" : ".requires/", automount_name, NULL);
if (!lnk)
return log_oom();
mkdir_parents_label(lnk, 0755);
if (symlink(automount_unit, lnk) < 0) {
log_error("Failed to create symlink %s: %m", lnk);
return -errno;
}
}
return 0;
}
static int mount_points_list_get(MountPoint **head) {
_cleanup_fclose_ FILE *proc_self_mountinfo = NULL;
unsigned int i;
int r;
assert(head);
proc_self_mountinfo = fopen("/proc/self/mountinfo", "re");
if (!proc_self_mountinfo)
return -errno;
for (i = 1;; i++) {
_cleanup_free_ char *path = NULL;
char *p = NULL;
MountPoint *m;
int k;
k = fscanf(proc_self_mountinfo,
"%*s " /* (1) mount id */
"%*s " /* (2) parent id */
"%*s " /* (3) major:minor */
"%*s " /* (4) root */
"%ms " /* (5) mount point */
"%*s" /* (6) mount options */
"%*[^-]" /* (7) optional fields */
"- " /* (8) separator */
"%*s " /* (9) file system type */
"%*s" /* (10) mount source */
"%*s" /* (11) mount options 2 */
"%*[^\n]", /* some rubbish at the end */
&path);
if (k != 1) {
if (k == EOF)
break;
log_warning("Failed to parse /proc/self/mountinfo:%u.", i);
continue;
}
r = cunescape(path, UNESCAPE_RELAX, &p);
if (r < 0)
return r;
/* Ignore mount points we can't unmount because they
* are API or because we are keeping them open (like
* /dev/console). Also, ignore all mounts below API
* file systems, since they are likely virtual too,
* and hence not worth spending time on. Also, in
* unprivileged containers we might lack the rights to
* unmount these things, hence don't bother. */
if (mount_point_is_api(p) ||
mount_point_ignore(p) ||
path_startswith(p, "/dev") ||
path_startswith(p, "/sys") ||
path_startswith(p, "/proc")) {
free(p);
continue;
}
m = new0(MountPoint, 1);
if (!m) {
free(p);
return -ENOMEM;
}
m->path = p;
LIST_PREPEND(mount_point, *head, m);
}
return 0;
}
