<variablelist class='fstab-options'>
<varlistentry>
+ <term><option>x-systemd.requires=</option></term>
+
+ <listitem><para>Configures a <varname>Requires=</varname> and
+ an <varname>After=</varname> dependency between the created
+ mount unit and another systemd unit, such as a device or mount
+ unit. The argument should be a unit name, or an absolute path
+ to a device node or mount point. This option may be specified
+ more than once. This option is particularly useful for mount
+ point declarations that need an additional device to be around
+ (such as an external journal device for journal file systems)
+ or an additional mount to be in place (such as an overlay file
+ system that merges multiple mount points). See
+ <varname>After=</varname> and <varname>Requires=</varname> in
+ <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ for details.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>x-systemd.requires-mounts-for=</option></term>
+
+ <listitem><para>Configures a
+ <varname>RequiresMountsFor=</varname> dependency between the
+ created mount unit and other mount units. The argument must be
+ an absolute path. This option may be specified more than once.
+ See <varname>RequiresMountsFor=</varname> in
+ <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ for details.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
<term><option>x-systemd.automount</option></term>
<listitem><para>An automount unit will be created for the file
return 0;
}
+static int write_requires_after(FILE *f, const char *opts) {
+ _cleanup_strv_free_ char **names = NULL, **units = NULL;
+ _cleanup_free_ char *res = NULL;
+ char **s;
+ int r;
+
+ assert(f);
+ assert(opts);
+
+ r = fstab_extract_values(opts, "x-systemd.requires", &names);
+ if (r < 0)
+ return log_warning_errno(r, "Failed to parse options: %m");
+ if (r == 0)
+ return 0;
+
+ STRV_FOREACH(s, names) {
+ char *x;
+
+ r = unit_name_mangle_with_suffix(*s, UNIT_NAME_NOGLOB, ".mount", &x);
+ if (r < 0)
+ return log_error_errno(r, "Failed to generate unit name: %m");
+ r = strv_consume(&units, x);
+ if (r < 0)
+ return log_oom();
+ }
+
+ if (units) {
+ res = strv_join(units, " ");
+ if (!res)
+ return log_oom();
+ fprintf(f, "After=%1$s\nRequires=%1$s\n", res);
+ }
+
+ return 0;
+}
+
+static int write_requires_mounts_for(FILE *f, const char *opts) {
+ _cleanup_strv_free_ char **paths = NULL;
+ _cleanup_free_ char *res = NULL;
+ int r;
+
+ assert(f);
+ assert(opts);
+
+ r = fstab_extract_values(opts, "x-systemd.requires-mounts-for", &paths);
+ if (r < 0)
+ return log_warning_errno(r, "Failed to parse options: %m");
+ if (r == 0)
+ return 0;
+
+ res = strv_join(paths, " ");
+ if (!res)
+ return log_oom();
+
+ fprintf(f, "RequiresMountsFor=%s\n", res);
+
+ return 0;
+}
+
static int add_mount(
const char *what,
const char *where,
if (post && !noauto && !nofail && !automount)
fprintf(f, "Before=%s\n", post);
+ if (!automount && opts) {
+ r = write_requires_after(f, opts);
+ if (r < 0)
+ return r;
+ r = write_requires_mounts_for(f, opts);
+ if (r < 0)
+ return r;
+ }
+
if (passno != 0) {
r = generator_write_fsck_deps(f, arg_dest, what, where, fstype);
if (r < 0)
"Before=%s\n",
post);
+ if (opts) {
+ r = write_requires_after(f, opts);
+ if (r < 0)
+ return r;
+ r = write_requires_mounts_for(f, opts);
+ if (r < 0)
+ return r;
+ }
+
fprintf(f,
"[Automount]\n"
"Where=%s\n",
return !!n;
}
+int fstab_extract_values(const char *opts, const char *name, char ***values) {
+ _cleanup_strv_free_ char **optsv = NULL, **res = NULL;
+ char **s;
+
+ assert(opts);
+ assert(name);
+ assert(values);
+
+ optsv = strv_split(opts, ",");
+ if (!optsv)
+ return -ENOMEM;
+
+ STRV_FOREACH(s, optsv) {
+ char *arg;
+ int r;
+
+ arg = startswith(*s, name);
+ if (!arg || *arg != '=')
+ continue;
+ r = strv_extend(&res, arg + 1);
+ if (r < 0)
+ return r;
+ }
+
+ *values = res;
+ res = NULL;
+
+ return !!*values;
+}
+
int fstab_find_pri(const char *options, int *ret) {
_cleanup_free_ char *opt = NULL;
int r;
int fstab_filter_options(const char *opts, const char *names,
const char **namefound, char **value, char **filtered);
+int fstab_extract_values(const char *opts, const char *name, char ***values);
+
static inline bool fstab_test_option(const char *opts, const char *names) {
return !!fstab_filter_options(opts, names, NULL, NULL, NULL);
}