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| author | Karel Zak | 2013-10-15 12:17:03 +0200 |
|---|---|---|
| committer | Karel Zak | 2013-10-15 12:21:28 +0200 |
| commit | f32a9be45aa53abe15fe223affb31b08db097e16 (patch) | |
| tree | 045eb5fe7e81d65343e657959f322ab5bad29677 /libfdisk/src/dos.c | |
| parent | docs: tweak formatting and grammar of the ipcrm man page (diff) | |
| download | kernel-qcow2-util-linux-f32a9be45aa53abe15fe223affb31b08db097e16.tar.gz kernel-qcow2-util-linux-f32a9be45aa53abe15fe223affb31b08db097e16.tar.xz kernel-qcow2-util-linux-f32a9be45aa53abe15fe223affb31b08db097e16.zip | |
libfdisk: (dos) all disklabel locate function
.. to make 'D'ump expert command usable also for MBR.
Yes, we have -rc2 now and this is a new feature, but it's tiny change
without any interaction to the rest of the code and without gettext stuff.
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'libfdisk/src/dos.c')
| -rw-r--r-- | libfdisk/src/dos.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/libfdisk/src/dos.c b/libfdisk/src/dos.c index 3aa40deea..0456ba5f2 100644 --- a/libfdisk/src/dos.c +++ b/libfdisk/src/dos.c @@ -1374,6 +1374,39 @@ done: return rc; } +static int dos_locate_disklabel(struct fdisk_context *cxt, int n, + const char **name, off_t *offset, size_t *size) +{ + assert(cxt); + + *name = NULL; + *offset = 0; + *size = 0; + + switch (n) { + case 0: + *name = "MBR"; + *offset = 0; + *size = 512; + break; + default: + /* extended partitions */ + if (n - 1 + 4 < cxt->label->nparts_max) { + struct pte *pe = self_pte(cxt, n - 1 + 4); + + assert(pe->private_sectorbuffer); + + *name = "EBR"; + *offset = pe->offset * cxt->sector_size; + *size = 512; + } else + return 1; + break; + } + + return 0; +} + static struct fdisk_parttype *dos_get_parttype( struct fdisk_context *cxt, size_t partnum) @@ -1911,6 +1944,7 @@ static const struct fdisk_label_operations dos_operations = .write = dos_write_disklabel, .verify = dos_verify_disklabel, .create = dos_create_disklabel, + .locate = dos_locate_disklabel, .list = dos_list_disklabel, .get_id = dos_get_disklabel_id, .set_id = dos_set_disklabel_id, |