[Libguestfs] Re: [PATCH] daemon: Fix btrfs volume device reverse-translation

+/* btrfsvol:/dev/sdX also needs reversing. */ +static char * +reverse_btrfsvol (const char *device) +{ + const char prefix[] = "btrfsvol:"; + const char *device_start, *device_end; + CLEANUP_FREE char *device_name = NULL; + CLEANUP_FREE char *reversed_device = NULL; + char *ret; + + device_start = device + strlen (prefix); + device_end = strchr (device_start + strlen ("/dev/"), '/'); + device_name = strndup (device_start, device_end - device_start);

+ + reversed_device = reverse_device_name_translation (device_name); + if (reversed_device == NULL) + return NULL; + + /* Construct the final btrfsvol: and return it, caller frees. */ + if (asprintf (&ret, "%s%s%s", prefix, reversed_device, device_end) == -1) { + reply_with_perror ("asprintf"); + return NULL; + } + + return ret; +}