This patch changes sfdisk behavior and it wipes foreign signatures
from the device to avoid collisions. The wipe functionality is
automatically enabled in the interactive mode only (user is always
warned about it), otherwise it's possible to control all by --wipe
<auto|never|always>.
The program does not change behavior when executed in scripts (echo
<something> | sfdisk), the option "--wipe=always" is required to enable
in this case.
Signed-off-by: Karel Zak <kzak@redhat.com>
It seesm that kernel always returns EINVAL for BLKRRPART on loop
devices, we call the ioctl to check if nobody else uses the device.
Signed-off-by: Karel Zak <kzak@redhat.com>
Let's use fgets-like callback only when compiled with readline,
otherwise (and also for non-tty) print prompt by printf().
Reported-by: Ruediger Meier <sweet_f_a@gmx.de>
Signed-off-by: Karel Zak <kzak@redhat.com>
The -A has been originally used for --activate, since v2.26 it's used
for --append. This is stupid mistake. This patch reverts the change to:
-A, --activate
-a, --append
Note that --append is a new command line option in v2.26.
Addresses: https://bugs.archlinux.org/task/44349
Signed-off-by: Karel Zak <kzak@redhat.com>
It's better to use exact and explicitly defined types (e.g. uint64_t)
rather than something like off_t to make code more portable.
[reported with gcc (Ubuntu 4.4.3-4ubuntu5.1) 4.4.3)]
The patch also fixes one debug message.
Reported-by: Benno Schulenberg <bensberg@justemail.net>
Signed-off-by: Karel Zak <kzak@redhat.com>
This adds a concise description of a tool to its usage text.
A first form of this patch was proposed by Steven Honeyman
(see http://www.spinics.net/lists/util-linux-ng/msg09994.html).
Signed-off-by: Benno Schulenberg <bensberg@justemail.net>
In sfdisk -V is taken by --verify. Use for the description of --version
the same indentation as for --help, not that of the other options.
Signed-off-by: Benno Schulenberg <bensberg@justemail.net>
The struct fdisk_partition has special flag "end_follow_default" to
make the partition large as much as possible. This patch makes this
flag usable for fdisk_set_partition() function.
Command line example (enlarge the first partition):
# echo ',+' | ./sfdisk -N1 /dev/sdb
...
Disk /dev/sdb: 100 MiB, 104857600 bytes, 204800 sectors
...
Old situation:
Device Boot Start End Sectors Size Id Type
/dev/sdb1 2048 22527 20480 10M 83 Linux
^^^^^
New situation:
Device Boot Start End Sectors Size Id Type
/dev/sdb1 2048 204799 202752 99M 83 Linux
^^^^^^
Signed-off-by: Karel Zak <kzak@redhat.com>
disk-utils/sfdisk.c:222:9: warning: variable 'rc' is uninitialized when
used here [-Wuninitialized]
return rc;
disk-utils/sfdisk.c:208:8: note: initialize the variable 'rc' to silence
this warning
int rc;
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
The zero may be valid size and start of the partition. This patch
introduces:
fdisk_partition_has_start()
fdisk_partition_has_size()
fdisk_partition_unset_size()
fdisk_partition_unset_start()
to make it possible to work with zero. The feature is internally
implemented by magic constant ((type) -1) for undefined sizes and
offsets.
Signed-off-by: Karel Zak <kzak@redhat.com>
regular disk label:
# sfdisk --list /dev/sdb
..
Disklabel type: gpt
Disk identifier: 9DF9A9F1-0654-4E7A-9A5E-36E66D60FD79
Device Start End Sectors Size Type
/dev/sdb1 2048 22527 20480 10M Linux filesystem
/dev/sdb2 22528 43007 20480 10M Linux swap
/dev/sdb3 43008 204766 161759 79M Linux filesystem
nested (PMBR):
# sfdisk --list --label-nested dos /dev/sdb
...
Disklabel type: dos
Disk identifier: 0x00000000
Device Boot Start End Sectors Size Id Type
/dev/sdb1 1 204799 204799 100M ee GPT
and for example:
# sfdisk --label-nested dos /dev/sdb <<EOF
1, 2047, ee
, 10M, L
, 10M, S
,,
creates hybrid GPT (PMBR partitions point to the same location as GPT)
Signed-off-by: Karel Zak <kzak@redhat.com>
Ruediger Meier
Karel Zak
Benno Schulenberg
Sami Kerola
Yuri Chornoivan