chiark / gitweb /
Move x-systemd-device.timeout handling from core to fstab-generator
[elogind.git] / src / shared / generator.c
index 6110303..762033b 100644 (file)
@@ -19,6 +19,7 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
+#include <string.h>
 #include <unistd.h>
 
 #include "util.h"
@@ -26,6 +27,8 @@
 #include "mkdir.h"
 #include "unit-name.h"
 #include "generator.h"
+#include "path-util.h"
+#include "dropin.h"
 
 int generator_write_fsck_deps(
                 FILE *f,
@@ -45,16 +48,15 @@ int generator_write_fsck_deps(
         }
 
         if (!isempty(fstype) && !streq(fstype, "auto")) {
-                const char *checker;
                 int r;
-
-                checker = strappenda("/sbin/fsck.", fstype);
-                r = access(checker, X_OK);
-                if (r < 0) {
-                        log_warning("Checking was requested for %s, but %s cannot be used: %m", what, checker);
-
+                r = fsck_exists(fstype);
+                if (r == -ENOENT) {
                         /* treat missing check as essentially OK */
-                        return errno == ENOENT ? 0 : -errno;
+                        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;
                 }
         }
 
@@ -85,3 +87,59 @@ int generator_write_fsck_deps(
 
         return 0;
 }
+
+int generator_write_timeouts(const char *dir, const char *what, const char *where,
+                             const char *opts, char **filtered) {
+
+        /* Allow configuration how long we wait for a device that
+         * backs a mount point to show up. This is useful to support
+         * endless device timeouts for devices that show up only after
+         * user input, like crypto devices. */
+
+        _cleanup_free_ char *node = NULL, *unit = NULL, *t = NULL;
+        char *prefix, *start, *timeout, *postfix;
+        usec_t u;
+        int r;
+        size_t len;
+
+        if ((start = mount_test_option(opts, "comment=systemd.device-timeout")))
+                timeout = start + 31;
+        else if ((start = mount_test_option(opts, "x-systemd.device-timeout")))
+                timeout = start + 25;
+        else {
+                *filtered = strdup(opts);
+                if (!*filtered)
+                        return log_oom();
+
+                return 0;
+        }
+
+        len = strcspn(timeout, ",;" WHITESPACE);
+        t = strndup(timeout, len);
+        if (!t)
+                return -ENOMEM;
+
+        prefix = strndupa(opts, start - opts - (start != opts));
+        postfix = timeout + len + (timeout[len] != '\0');
+        *filtered = strjoin(prefix, *postfix ? postfix : NULL, NULL);
+        if (!*filtered)
+                return log_oom();
+
+        r = parse_sec(t, &u);
+        if (r < 0) {
+                log_warning("Failed to parse timeout for %s, ignoring: %s",
+                            where, timeout);
+                return 0;
+        }
+
+        node = fstab_node_to_udev_node(what);
+        if (!node)
+                return log_oom();
+
+        unit = unit_name_from_path(node, ".device");
+        if (!unit)
+                return -ENOMEM;
+
+        return write_drop_in_format(dir, unit, "device-timeout",
+                                    "[Unit]\nJobTimeoutSec=%u", u / USEC_PER_SEC);
+}