diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/libudev/libudev-device.c | 22 | ||||
| -rw-r--r-- | src/libudev/libudev-private.h | 1 | ||||
| -rw-r--r-- | src/shared/util.c | 18 | ||||
| -rw-r--r-- | src/shared/util.h | 3 | ||||
| -rw-r--r-- | src/udev/udev-event.c | 31 |
5 files changed, 60 insertions, 15 deletions
diff --git a/src/libudev/libudev-device.c b/src/libudev/libudev-device.c index 32c80cc9ec..8df84d9888 100644 --- a/src/libudev/libudev-device.c +++ b/src/libudev/libudev-device.c @@ -1988,3 +1988,25 @@ struct udev_device *udev_device_new_from_nulstr(struct udev *udev, char *nulstr, return device; } + +int udev_device_rename(struct udev_device *udev_device, const char *name) +{ + _cleanup_free_ char *dirname = NULL; + char *new_syspath; + int r; + + if (udev_device == NULL || name == NULL) + return -EINVAL; + + dirname = dirname_malloc(udev_device->syspath); + if (!dirname) + return -ENOMEM; + + new_syspath = strjoina(dirname, "/", name); + + r = udev_device_set_syspath(udev_device, new_syspath); + if (r < 0) + return r; + + return 0; +} diff --git a/src/libudev/libudev-private.h b/src/libudev/libudev-private.h index 29df8df6c4..e8629e2446 100644 --- a/src/libudev/libudev-private.h +++ b/src/libudev/libudev-private.h @@ -45,6 +45,7 @@ uid_t udev_device_get_devnode_uid(struct udev_device *udev_device); gid_t udev_device_get_devnode_gid(struct udev_device *udev_device); int udev_device_set_subsystem(struct udev_device *udev_device, const char *subsystem); int udev_device_set_syspath(struct udev_device *udev_device, const char *syspath); +int udev_device_rename(struct udev_device *udev_device, const char *new_name); int udev_device_set_devnum(struct udev_device *udev_device, dev_t devnum); int udev_device_add_devlink(struct udev_device *udev_device, const char *devlink); void udev_device_cleanup_devlinks_list(struct udev_device *udev_device); diff --git a/src/shared/util.c b/src/shared/util.c index e76325e7c2..091b3c04a1 100644 --- a/src/shared/util.c +++ b/src/shared/util.c @@ -846,6 +846,24 @@ ssize_t loop_read(int fd, void *buf, size_t nbytes, bool do_poll) { return n; } +char* dirname_malloc(const char *path) { + char *d, *dir, *dir2; + + d = strdup(path); + if (!d) + return NULL; + dir = dirname(d); + assert(dir); + + if (dir != d) { + dir2 = strdup(dir); + free(d); + return dir2; + } + + return dir; +} + int dev_urandom(void *p, size_t n) { static int have_syscall = -1; int r, fd; diff --git a/src/shared/util.h b/src/shared/util.h index c5dd6bde0a..9458a1942f 100644 --- a/src/shared/util.h +++ b/src/shared/util.h @@ -275,6 +275,9 @@ int flush_fd(int fd); int fopen_temporary(const char *path, FILE **_f, char **_temp_path); ssize_t loop_read(int fd, void *buf, size_t nbytes, bool do_poll); + +char* dirname_malloc(const char *path); + int chmod_and_chown(const char *path, mode_t mode, uid_t uid, gid_t gid); bool null_or_empty(struct stat *st) _pure_; diff --git a/src/udev/udev-event.c b/src/udev/udev-event.c index 7bd625495c..99b079f048 100644 --- a/src/udev/udev-event.c +++ b/src/udev/udev-event.c @@ -862,26 +862,27 @@ void udev_event_execute_rules(struct udev_event *event, sigmask); /* rename a new network interface, if needed */ - int r; if (udev_device_get_ifindex(dev) > 0 && streq(udev_device_get_action(dev), "add") && event->name != NULL && !streq(event->name, udev_device_get_sysname(dev))) { - char syspath[UTIL_PATH_SIZE]; - char *pos; - char *finalifname = event->name; + int r; r = rename_netif(event); - if (r >= 0) { - /* remember old name */ - udev_device_add_property(dev, "INTERFACE_OLD", udev_device_get_sysname(dev)); + if (r < 0) + log_warning_errno(r, "could not rename interface '%d' from '%s' to '%s': %m", udev_device_get_ifindex(dev), + udev_device_get_sysname(dev), event->name); + else { + const char *interface_old; - /* now change the devpath, because the kernel device name has changed */ - strscpy(syspath, sizeof(syspath), udev_device_get_syspath(dev)); - pos = strrchr(syspath, '/'); - if (pos != NULL) { - pos++; - strscpy(pos, sizeof(syspath) - (pos - syspath), finalifname); - udev_device_set_syspath(event->dev, syspath); - udev_device_add_property(dev, "INTERFACE", udev_device_get_sysname(dev)); + /* remember old name */ + interface_old = udev_device_get_sysname(dev); + + r = udev_device_rename(dev, event->name); + if (r < 0) + log_warning_errno(r, "renamed interface '%d' from '%s' to '%s', but could not update udev_device: %m", + udev_device_get_ifindex(dev), udev_device_get_sysname(dev), event->name); + else { + udev_device_add_property(dev, "INTERFACE_OLD", interface_old); + udev_device_add_property(dev, "INTERFACE", event->name); log_debug("changed devpath to '%s'", udev_device_get_devpath(dev)); } } |