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sfdisk: add --part-attrs 

Signed-off-by: Karel Zak <kzak@redhat.com>
This commit is contained in:
Karel Zak 2014-10-02 15:49:24 +02:00
parent c77ba5316f
commit bc9e854709
2 changed files with 74 additions and 1 deletions
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10
disk-utils/sfdisk.8
View File

@ -66,6 +66,13 @@ List geometry of all or specified devices.
List partitions of all or specified devices. This command can be used
together with \fB\-\-verify\fR.
.TP
.BR \-\-part\-attrs " " \fIdevice\fR " " \fIpartno\fR " "[\fIattrs\fR]
Change GPT partition attribute bits. If \fIattrs\fR no specified then print the current
partition setting. The \fIattrs\fR is comma delimited list of bits. The currently
supported attribute bits are: RequiredPartiton, NoBlockIOProtocol, LegacyBIOSBootable
and GUID specific bits in range from 48 to 63. For example string
"RequiredPartiton,50,51" sets three bits.
.TP
.BR \-\-part\-label " " \fIdevice\fR " " \fIpartno\fR " "[\fIlabel\fR]
Change GPT partition name (label). If \fIlabel\fR no specified then print the current
partition label.
@ -255,7 +262,8 @@ in bytes and the size is aligned according to device I/O limits.
Mark partition as bootable.
.TP
.B attrs=<string>
Partition attributes.
Partition attributes, usually GPT partition attribute bits. See --part-attrs for
more details about GPT bits string format.
.TP
.B uuid=<string>
GPT partition UUID.

65
disk-utils/sfdisk.c
View File

@ -72,6 +72,7 @@ enum {
ACT_PARTTYPE,
ACT_PARTUUID,
ACT_PARTLABEL,
ACT_PARTATTRS,
};
struct sfdisk {
@ -821,6 +822,60 @@ static int command_partlabel(struct sfdisk *sf, int argc, char **argv)
return write_changes(sf);
}
/*
* sfdisk --part-attrs <device> <partno> [<attrs>]
*/
static int command_partattrs(struct sfdisk *sf, int argc, char **argv)
{
size_t partno;
struct fdisk_partition *pa = NULL;
const char *devname = NULL, *attrs = NULL;
if (!argc)
errx(EXIT_FAILURE, _("no disk device specified"));
devname = argv[0];
if (argc < 2)
errx(EXIT_FAILURE, _("no partition number specified"));
partno = strtou32_or_err(argv[1], _("failed to parse partition number"));
if (argc == 3)
attrs = argv[2];
else if (argc > 3)
errx(EXIT_FAILURE, _("uneexpected arguments"));
/* read-only if name not given */
assign_device_partition(sf, devname, partno, !attrs);
/* print partition name */
if (!attrs) {
const char *str;
if (fdisk_get_partition(sf->cxt, partno - 1, &pa) == 0)
str = fdisk_partition_get_attrs(pa);
if (str)
printf("%s\n", str);
fdisk_unref_partition(pa);
fdisk_deassign_device(sf->cxt, 1);
return 0;
}
if (sf->backup)
backup_partition_table(sf, devname);
pa = fdisk_new_partition();
if (!pa)
err(EXIT_FAILURE, _("failed to allocate partition object"));
if (fdisk_partition_set_attrs(pa, attrs) != 0 ||
fdisk_set_partition(sf->cxt, partno - 1, pa) != 0)
errx(EXIT_FAILURE, _("%s: partition %zu: failed to set partition attributes"),
devname, partno);
fdisk_unref_partition(pa);
return write_changes(sf);
}
static void sfdisk_print_partition(struct sfdisk *sf, size_t n)
{
struct fdisk_partition *pa = NULL;
@ -1240,6 +1295,7 @@ static void __attribute__ ((__noreturn__)) usage(FILE *out)
fputs(_(" --part-label <dev> <part> [<str>] print or change partition label\n"), out);
fputs(_(" --part-type <dev> <part> [<type>] print or change partition type\n"), out);
fputs(_(" --part-uuid <dev> <part> [<uuid>] print or change partition uuid\n"), out);
fputs(_(" --part-attrs <dev> <part> [<str>] print or change partition attributes\n"), out);
fputs(USAGE_SEPARATOR, out);
fputs(_(" <dev> device (usually disk) path\n"), out);
@ -1284,6 +1340,7 @@ int main(int argc, char *argv[])
OPT_PARTUUID,
OPT_PARTLABEL,
OPT_PARTTYPE,
OPT_PARTATTRS,
};
static const struct option longopts[] = {
@ -1309,6 +1366,7 @@ int main(int argc, char *argv[])
{ "part-uuid", no_argument, NULL, OPT_PARTUUID },
{ "part-label", no_argument, NULL, OPT_PARTLABEL },
{ "part-type", no_argument, NULL, OPT_PARTTYPE },
{ "part-attrs", no_argument, NULL, OPT_PARTATTRS },
{ "unit", required_argument, NULL, 'u' }, /* deprecated */
{ "Linux", no_argument, NULL, 'L' }, /* deprecated */
@ -1410,6 +1468,9 @@ int main(int argc, char *argv[])
case OPT_PARTLABEL:
sf->act = ACT_PARTLABEL;
break;
case OPT_PARTATTRS:
sf->act = ACT_PARTATTRS;
break;
case OPT_NOREREAD:
sf->noreread = 1;
break;
@ -1471,6 +1532,10 @@ int main(int argc, char *argv[])
rc = command_partlabel(sf, argc - optind, argv + optind);
break;
case ACT_PARTATTRS:
rc = command_partattrs(sf, argc - optind, argv + optind);
break;
}
sfdisk_deinit(sf);