vol_id: add --offset option

[elogind.git] / extras / volume_id / lib / volume_id.c

diff --git a/extras/volume_id/lib/volume_id.c b/extras/volume_id/lib/volume_id.c
index e8f6de35fdc607ca058c206c8ae1a6aa4c123b40..7c68fb1ef9fdb42cb77c2e3164982949a4ad2a36 100644 (file)
--- a/extras/volume_id/lib/volume_id.c
+++ b/extras/volume_id/lib/volume_id.c
@@ -331,9 +331,9 @@ err:
 }
 
 /* run only once into a timeout for unreadable devices */
-static int device_is_readable(struct volume_id *id)
+static int device_is_readable(struct volume_id *id, uint64_t off)
 {
-       if (volume_id_get_buffer(id, 0x00, 0x200) != NULL)
+       if (volume_id_get_buffer(id, off, 0x200) != NULL)
                return 1;
        return 0;
 }
@@ -355,7 +355,7 @@ int volume_id_probe_raid(struct volume_id *id, uint64_t off, uint64_t size)
        if (id == NULL)
                return -EINVAL;
 
-       if (!device_is_readable(id))
+       if (!device_is_readable(id, off))
                return -1;
 
        info("probing at offset 0x%llx, size 0x%llx",
@@ -389,7 +389,7 @@ int volume_id_probe_filesystem(struct volume_id *id, uint64_t off, uint64_t size
        if (id == NULL)
                return -EINVAL;
 
-       if (!device_is_readable(id))
+       if (!device_is_readable(id, off))
                return -1;
 
        info("probing at offset 0x%llx, size 0x%llx",
@@ -421,7 +421,7 @@ int volume_id_probe_all(struct volume_id *id, uint64_t off, uint64_t size)
        if (id == NULL)
                return -EINVAL;
 
-       if (!device_is_readable(id))
+       if (!device_is_readable(id, off))
                return -1;
 
        /* probe for raid first, because fs probes may be successful on raid members */