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| author | Karel Zak | 2013-10-09 16:02:42 +0200 |
|---|---|---|
| committer | Karel Zak | 2013-10-09 16:11:31 +0200 |
| commit | 565b7da63e87211ef78a7b4e67dcc66119813640 (patch) | |
| tree | 9ee4431d070a12ee3b82b2ce0406c867a3b374ce /fdisks/fdisk.c | |
| parent | libfdisk: add API to disable specified label (diff) | |
| download | kernel-qcow2-util-linux-565b7da63e87211ef78a7b4e67dcc66119813640.tar.gz kernel-qcow2-util-linux-565b7da63e87211ef78a7b4e67dcc66119813640.tar.xz kernel-qcow2-util-linux-565b7da63e87211ef78a7b4e67dcc66119813640.zip | |
fdisk: add -t <type> to enable only specified type
In some cases (for example hybrid GPT) it's useful to force fdisk to
read only specified disk label and ignore everything else.
For example:
# fdisk -l /dev/sda
Disk /dev/sda: 149.1 GiB, 160041885696 bytes, 312581808 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 3549290F-417C-4941-8503-F7835109B821
Device Start End Size Type
/dev/sda1 2048 2050047 1000M EFI System
/dev/sda2 2050048 6146047 2G Microsoft basic data
/dev/sda3 6146048 26462207 9.7G Linux swap
/dev/sda4 26462208 98142207 34.2G Microsoft basic data
/dev/sda5 98142208 230662143 63.2G Microsoft basic data
/dev/sda6 230662144 312580095 39.1G Microsoft basic data
but when GPT is disabled we can access PMBR:
# fdisk -l -t dos /dev/sda
Disk /dev/sda: 149.1 GiB, 160041885696 bytes, 312581808 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sda1 1 312581807 156290903+ ee GPT
Reported-by: Craig <util-linux_contact@magister.com.au>
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'fdisks/fdisk.c')
| -rw-r--r-- | fdisks/fdisk.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/fdisks/fdisk.c b/fdisks/fdisk.c index 50f3d412a..5df78f6a5 100644 --- a/fdisks/fdisk.c +++ b/fdisks/fdisk.c @@ -60,6 +60,7 @@ static void __attribute__ ((__noreturn__)) usage(FILE *out) fputs(_(" -h print this help text\n"), out); fputs(_(" -c[=<mode>] compatible mode: 'dos' or 'nondos' (default)\n"), out); fputs(_(" -L[=<when>] colorize output (auto, always or never)\n"), out); + fputs(_(" -t <type> force fdisk to recognize specified partition table type only\n"), out); fputs(_(" -u[=<unit>] display units: 'cylinders' or 'sectors' (default)\n"), out); fputs(_(" -v print program version\n"), out); fputs(_(" -C <number> specify the number of cylinders\n"), out); @@ -410,7 +411,7 @@ int main(int argc, char **argv) fdisk_context_set_ask(cxt, ask_callback, NULL); - while ((c = getopt(argc, argv, "b:c::C:hH:lL::sS:u::vV")) != -1) { + while ((c = getopt(argc, argv, "b:c::C:hH:lL::sS:t:u::vV")) != -1) { switch (c) { case 'b': { @@ -465,6 +466,18 @@ int main(int argc, char **argv) case 's': act = ACT_SHOWSIZE; break; + case 't': + { + struct fdisk_label *lb = NULL; + + while (fdisk_context_next_label(cxt, &lb) == 0) + fdisk_label_set_disabled(lb, 1); + + lb = fdisk_context_get_label(cxt, optarg); + if (!lb) + errx(EXIT_FAILURE, _("unsupported disklabel: %s"), optarg); + fdisk_label_set_disabled(lb, 0); + } case 'u': if (optarg && *optarg == '=') optarg++; |