diff options
Diffstat (limited to 'src/core/device.c')
| -rw-r--r-- | src/core/device.c | 51 |
1 files changed, 24 insertions, 27 deletions
diff --git a/src/core/device.c b/src/core/device.c index 8eca4c2fa0..c784cabbb5 100644 --- a/src/core/device.c +++ b/src/core/device.c @@ -292,18 +292,19 @@ static int device_add_udev_wants(Unit *u, struct udev_device *dev) { static int device_setup_unit(Manager *m, struct udev_device *dev, const char *path, bool main) { _cleanup_free_ char *e = NULL; - const char *sysfs; + const char *sysfs = NULL; Unit *u = NULL; bool delete; int r; assert(m); - assert(dev); assert(path); - sysfs = udev_device_get_syspath(dev); - if (!sysfs) - return 0; + if (dev) { + sysfs = udev_device_get_syspath(dev); + if (!sysfs) + return 0; + } r = unit_name_from_path(path, ".device", &e); if (r < 0) @@ -312,6 +313,7 @@ static int device_setup_unit(Manager *m, struct udev_device *dev, const char *pa u = manager_get_unit(m, e); if (u && + sysfs && DEVICE(u)->sysfs && !path_equal(DEVICE(u)->sysfs, sysfs)) { log_unit_debug(u, "Device %s appeared twice with different sysfs paths %s and %s", e, DEVICE(u)->sysfs, sysfs); @@ -336,17 +338,19 @@ static int device_setup_unit(Manager *m, struct udev_device *dev, const char *pa /* If this was created via some dependency and has not * actually been seen yet ->sysfs will not be * initialized. Hence initialize it if necessary. */ + if (sysfs) { + r = device_set_sysfs(DEVICE(u), sysfs); + if (r < 0) + goto fail; - r = device_set_sysfs(DEVICE(u), sysfs); - if (r < 0) - goto fail; + (void) device_update_description(u, dev, path); - (void) device_update_description(u, dev, path); + /* The additional systemd udev properties we only interpret + * for the main object */ + if (main) + (void) device_add_udev_wants(u, dev); + } - /* The additional systemd udev properties we only interpret - * for the main object */ - if (main) - (void) device_add_udev_wants(u, dev); /* Note that this won't dispatch the load queue, the caller * has to do that if needed and appropriate */ @@ -788,23 +792,16 @@ int device_found_node(Manager *m, const char *node, bool add, DeviceFound found, * will still have a device node even when the medium * is not there... */ - if (stat(node, &st) < 0) { - if (errno == ENOENT) + if (stat(node, &st) >= 0) { + if (!S_ISBLK(st.st_mode) && !S_ISCHR(st.st_mode)) return 0; - return log_error_errno(errno, "Failed to stat device node file %s: %m", node); - } - - if (!S_ISBLK(st.st_mode) && !S_ISCHR(st.st_mode)) - return 0; - - dev = udev_device_new_from_devnum(m->udev, S_ISBLK(st.st_mode) ? 'b' : 'c', st.st_rdev); - if (!dev) { - if (errno == ENOENT) - return 0; + dev = udev_device_new_from_devnum(m->udev, S_ISBLK(st.st_mode) ? 'b' : 'c', st.st_rdev); + if (!dev && errno != ENOENT) + return log_error_errno(errno, "Failed to get udev device from devnum %u:%u: %m", major(st.st_rdev), minor(st.st_rdev)); - return log_oom(); - } + } else if (errno != ENOENT) + return log_error_errno(errno, "Failed to stat device node file %s: %m", node); /* If the device is known in the kernel and newly * appeared, then we'll create a device unit for it, |