block: strip trailing spaces from vfat labels

Strip trailing spaces from vfat labels to mimic the behaviour of "blkid"

diff --git a/libblkid-tiny/vfat.c b/libblkid-tiny/vfat.c
index a24e6c354389e24506ec928f1f11ede4e7e4b05a..dd53d6856cd3b4c5c24a71fc267028a269fc178a 100644 (file)
--- a/libblkid-tiny/vfat.c
+++ b/libblkid-tiny/vfat.c
@@ -273,6 +273,16 @@ static int fat_valid_superblock(const struct blkid_idmag *mag,
 static struct vfat_super_block vs;
 static struct msdos_super_block ms;
 
+static int set_label(blkid_probe pr, unsigned char *vol_label)
+{
+       unsigned char *c;
+
+       for (c = vol_label + 10; c > vol_label && *c == ' '; c--)
+               *c = 0;
+
+       return blkid_probe_set_label(pr, vol_label, 11);
+}
+
 /* FAT label extraction from the root directory taken from Kay
  * Sievers's volume_id library */
 static int probe_vfat(blkid_probe pr, const struct blkid_idmag *mag)
@@ -396,7 +406,7 @@ static int probe_vfat(blkid_probe pr, const struct blkid_idmag *mag)
        }
 
        if (vol_label && memcmp(vol_label, no_name, 11))
-               blkid_probe_set_label(pr, (unsigned char *) vol_label, 11);
+               set_label(pr, (unsigned char *) vol_label);
 
        /* We can't just print them as %04X, because they are unaligned */
        if (vol_serno)