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| author | Davidlohr Bueso | 2012-09-27 09:50:27 +0200 |
|---|---|---|
| committer | Karel Zak | 2012-09-27 13:38:14 +0200 |
| commit | 766d5156c43b784700d28d1c1141008b2bf35ed7 (patch) | |
| tree | 18fb6ef0dde41c5152369a973c71bb4349e0b659 /fdisks/utils.c | |
| parent | fdisk: cleanup debug messages and comments (diff) | |
| download | kernel-qcow2-util-linux-766d5156c43b784700d28d1c1141008b2bf35ed7.tar.gz kernel-qcow2-util-linux-766d5156c43b784700d28d1c1141008b2bf35ed7.tar.xz kernel-qcow2-util-linux-766d5156c43b784700d28d1c1141008b2bf35ed7.zip | |
fdisk: add GPT support
This patch allows fdisk to handle GUID partition tables, based on the latest UEFI specifications
version 2.3.1, from June 27th, 2012. The following operations are supported:
- Probing (detects both protective and hybrid MBRs)
- Writing to disk
- Listing used partitions
- Adding partitions
- Deleting partitions
- Data integrity verifications (for both headers and partitions).
A few considerations:
- Currently we do not fix invalid primary headers -- we just abort!
- Header checksums are updated upon every change (ie: add/delete partitions), this allows us
to mathematically verify the changes on-the-fly, and not only when writing to disk, like
most other related tools do.
- We are extremly picky when writing to disk, any error aborts the opeartion.
- When creating a new partition, the following GUIDs are available:
http://en.wikipedia.org/wiki/GUID_Partition_Table#Partition_type_GUIDs
For test cases, the gpt.img from libblkid tests, scsi_debug and my own hard drive (/dev/sda) were used.
For the image, all operations were tested successfully, and for /dev/sda all except write, which
was not tested - hey, I'm not suicidal!
[kzak@redhat.com: - add get/set partition type functions
- use unified on strings based table for partition types
- add partition type to table list function]
Tested-and-reviewed-by: Petr Uzel <petr.uzel@suse.cz>
Signed-off-by: Davidlohr Bueso <dave@gnu.org>
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'fdisks/utils.c')
| -rw-r--r-- | fdisks/utils.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/fdisks/utils.c b/fdisks/utils.c index 0e15875e5..a206631d8 100644 --- a/fdisks/utils.c +++ b/fdisks/utils.c @@ -40,6 +40,7 @@ int fdisk_debug_mask; */ static const struct fdisk_label *labels[] = { + &gpt_label, &dos_label, &sun_label, &sgi_label, @@ -653,8 +654,9 @@ struct fdisk_parttype *fdisk_parse_parttype( /* maybe specified by order number */ errno = 0; i = strtol(str, &end, 0); - if (errno == 0 && *end == '\0' && i < (int) fdisk_get_nparttypes(cxt)) { - ret = &types[i]; + if (errno == 0 && *end == '\0' && i > 0 + && i - 1 < (int) fdisk_get_nparttypes(cxt)) { + ret = &types[i - 1]; goto done; } } |