[Libguestfs] [PATCH 3/7] mountable: Make list-filesystems return btrfsvols

--- src/listfs.c | 37 ++++++++++++++++++++++++++++++------- 1 file changed, 30 insertions(+), 7 deletions(-) diff --git a/src/listfs.c b/src/listfs.c index 4bcdf51..3e4f28e 100644 --- a/src/listfs.c +++ b/src/listfs.c @@ -136,6 +136,20 @@ remove_from_list (char **list, const char *item) } } +static void +add_vfs(guestfs_h *g, char *mountable, char *vfs_type, + char ***ret, size_t *ret_size) +{ + /* Extend the return array. */ + size_t i = *ret_size; + *ret_size += 2; + *ret = safe_realloc (g, *ret, (*ret_size + 1) * sizeof (char *)); + + (*ret)[i] = mountable; + (*ret)[i+1] = vfs_type; + (*ret)[i+2] = NULL; +} + /* Use vfs-type to look for a filesystem of some sort on 'dev'. * Apart from some types which we ignore, add the result to the * 'ret' string list. @@ -157,6 +171,21 @@ check_with_vfs_type (guestfs_h *g, const char *device, v = safe_strdup (g, "unknown"); free (vfs_type); } + else if (STREQ (vfs_type, "btrfs")) { + struct guestfs_btrfssubvolume_list *vols = + guestfs_btrfs_subvolume_list (g, device); + + for (size_t i = 0; i < vols->len; i++) { + struct guestfs_btrfssubvolume *this = &vols->val[i]; + char *mountable = safe_asprintf (g, "btrfsvol:%s/%s", + device, this->btrfssubvolume_path); + add_vfs (g, mountable, safe_strdup (g, "btrfs"), ret, ret_size); + } + + guestfs_free_btrfssubvolume_list (vols); + + v = safe_strdup (g, "btrfs"); + } else { /* Ignore all "*_member" strings. In libblkid these are returned * for things which are members of some RAID or LVM set, most @@ -177,13 +206,7 @@ check_with_vfs_type (guestfs_h *g, const char *device, v = vfs_type; } - /* Extend the return array. */ - size_t i = *ret_size; - *ret_size += 2; - *ret = safe_realloc (g, *ret, (*ret_size + 1) * sizeof (char *)); - (*ret)[i] = safe_strdup (g, device); - (*ret)[i+1] = v; - (*ret)[i+2] = NULL; + add_vfs (g, safe_strdup (g, device), v, ret, ret_size); } /* We should ignore partitions that have MBR type byte 0x42, because -- 1.8.1.2