if (verify) {
r = readlink_and_canonicalize(_syspath, &syspath);
- if (r == -EINVAL) {
+ if (r == -ENOENT)
+ /* the device does not exist (any more?) */
+ return -ENODEV;
+ else if (r == -EINVAL) {
/* not a symlink */
syspath = canonicalize_file_name(_syspath);
if (!syspath) {
+ if (errno == ENOENT)
+ /* the device does not exist (any more?) */
+ return -ENODEV;
+
log_debug("sd-device: could not canonicalize '%s': %m", _syspath);
return -errno;
}
- /* ignore errors due to the link not being a symlink */
- } else if (r < 0 && r != -EINVAL) {
+ } else if (r < 0) {
log_debug("sd-device: could not get target of '%s': %s", _syspath, strerror(-r));
return r;
}
path = strjoina(syspath, "/uevent");
r = access(path, F_OK);
if (r < 0) {
+ if (errno == ENOENT)
+ /* this is not a valid device */
+ return -ENODEV;
+
log_debug("sd-device: %s does not have an uevent file: %m", syspath);
return -errno;
}
} else {
/* everything else just just needs to be a directory */
- if (!is_dir(syspath, false)) {
- log_debug("sd-device: %s is not a directory", syspath);
- return -EINVAL;
- }
+ if (!is_dir(syspath, false))
+ return -ENODEV;
}
} else {
syspath = strdup(_syspath);
return sd_device_new_from_syspath(ret, syspath);
}
- return -ENOENT;
+ return -ENODEV;
}
int device_set_devtype(sd_device *device, const char *_devtype) {
if (device->uevent_loaded || device->sealed)
return 0;
+ device->uevent_loaded = true;
+
r = sd_device_get_syspath(device, &syspath);
if (r < 0)
return r;
if (r == -EACCES)
/* empty uevent files may be write-only */
return 0;
+ else if (r == -ENOENT)
+ /* some devices may not have uevent files, see set_syspath() */
+ return 0;
else if (r < 0) {
log_debug("sd-device: failed to read uevent file '%s': %s", path, strerror(-r));
return r;
log_debug("sd-device: could not set 'MAJOR=%s' or 'MINOR=%s' from '%s': %s", major, minor, path, strerror(-r));
}
- device->uevent_loaded = true;
-
return 0;
}
if (r < 0)
return r;
- /* this si racey, so we might end up with the wrong device */
+ /* this is racey, so we might end up with the wrong device */
if (ifr.ifr_ifindex != ifindex)
return -ENODEV;
return 0;
}
- return -ENOENT;
+ return -ENODEV;
}
_public_ int sd_device_get_parent(sd_device *child, sd_device **ret) {
path_startswith(device->devpath, "/class/") ||
path_startswith(device->devpath, "/bus/"))
r = device_set_subsystem(device, "subsystem");
- if (r < 0)
- return log_debug_errno(r, "sd-devcie: could not set subsystem for %s: %m", device->devpath);
+ if (r < 0 && r != -ENOENT)
+ return log_debug_errno(r, "sd-device: could not set subsystem for %s: %m", device->devpath);
device->subsystem_set = true;
}
return r;
if (major(devnum) > 0) {
+ assert(subsystem);
+
/* use dev_t -- b259:131072, c254:0 */
r = asprintf(&id, "%c%u:%u",
streq(subsystem, "block") ? 'b' : 'c',
major(devnum), minor(devnum));
if (r < 0)
- return -errno;
+ return -ENOMEM;
} else if (ifindex > 0) {
/* use netdev ifindex -- n3 */
r = asprintf(&id, "n%u", ifindex);
if (r < 0)
- return -errno;
+ return -ENOMEM;
} else {
/* use $subsys:$sysname -- pci:0000:00:1f.2
* sysname() has '!' translated, get it from devpath
if (!sysname)
return -EINVAL;
+ if (!subsystem)
+ return -EINVAL;
+
r = asprintf(&id, "+%s:%s", subsystem, sysname);
if (r < 0)
- return -errno;
+ return -ENOMEM;
}
device->id_filename = id;
return 0;
}
-static int device_read_db(sd_device *device) {
+int device_read_db_aux(sd_device *device, bool force) {
_cleanup_free_ char *db = NULL;
char *path;
const char *id, *value;
INVALID_LINE,
} state = PRE_KEY;
- if (device->db_loaded || device->sealed)
+ if (device->db_loaded || (!force && device->sealed))
return 0;
+ device->db_loaded = true;
+
r = device_get_id_filename(device, &id);
if (r < 0)
return r;
}
}
- device->db_loaded = true;
-
return 0;
}
+static int device_read_db(sd_device *device) {
+ return device_read_db_aux(device, false);
+}
+
_public_ int sd_device_get_is_initialized(sd_device *device, int *initialized) {
int r;