df2f438616
Commit 3052da3eac did not renumber
remaining patches, fix that
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
140 lines
4.1 KiB
Diff
140 lines
4.1 KiB
Diff
From 65e27d545cb54ac63536a8b6e7d5def180ddb5b7 Mon Sep 17 00:00:00 2001
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From: Karel Zak <kzak@redhat.com>
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Date: Tue, 14 Jan 2020 11:50:46 +0100
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Subject: [PATCH] sfdisk: add --disk-id to change disk UUID/ID
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Addresses: https://github.com/karelzak/util-linux/issues/916
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Signed-off-by: Karel Zak <kzak@redhat.com>
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Signed-off-by: Carlos Santos <unixmania@gmail.com>
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---
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disk-utils/sfdisk.8 | 5 +++++
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disk-utils/sfdisk.c | 54 +++++++++++++++++++++++++++++++++++++++++++++
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2 files changed, 59 insertions(+)
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diff --git a/disk-utils/sfdisk.8 b/disk-utils/sfdisk.8
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index 3ff5dd4e6..9ee71e81a 100644
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--- a/disk-utils/sfdisk.8
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+++ b/disk-utils/sfdisk.8
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@@ -152,6 +152,11 @@ or a GUID for GPT. For backward compatibility the options \fB\-c\fR and
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Change the GPT partition UUID. If \fIuuid\fR is not specified,
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then print the current partition UUID.
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.TP
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+.BR "\-\-disk\-id \fIdevice " [ \fIid ]
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+Change the disk identifier. If \fIid\fR is not specified,
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+then print the current identifier. The identifier is UUID for GPT
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+or unsigned integer for MBR.
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+.TP
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.BR \-r , " \-\-reorder " \fIdevice
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Renumber the partitions, ordering them by their start offset.
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.TP
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diff --git a/disk-utils/sfdisk.c b/disk-utils/sfdisk.c
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index bb6e1c6df..0db797b2d 100644
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--- a/disk-utils/sfdisk.c
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+++ b/disk-utils/sfdisk.c
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@@ -86,6 +86,7 @@ enum {
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ACT_PARTUUID,
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ACT_PARTLABEL,
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ACT_PARTATTRS,
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+ ACT_DISKID,
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ACT_DELETE
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};
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@@ -1327,6 +1328,46 @@ static int command_partattrs(struct sfdisk *sf, int argc, char **argv)
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return write_changes(sf);
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}
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+/*
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+ * sfdisk --disk-id <device> [<str>]
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+ */
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+static int command_diskid(struct sfdisk *sf, int argc, char **argv)
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+{
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+ const char *devname = NULL;
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+ char *str = NULL;
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+
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+ if (!argc)
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+ errx(EXIT_FAILURE, _("no disk device specified"));
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+ devname = argv[0];
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+
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+ if (argc == 2)
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+ str = argv[1];
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+ else if (argc > 2)
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+ errx(EXIT_FAILURE, _("unexpected arguments"));
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+
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+ if (fdisk_assign_device(sf->cxt, devname, !str) != 0)
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+ err(EXIT_FAILURE, _("cannot open %s"), devname);
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+
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+ /* print */
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+ if (!str) {
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+ fdisk_get_disklabel_id(sf->cxt, &str);
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+ if (str)
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+ printf("%s\n", str);
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+ free(str);
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+ fdisk_deassign_device(sf->cxt, 1);
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+ return 0;
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+ }
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+
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+ /* change */
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+ if (sf->backup)
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+ backup_partition_table(sf, devname);
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+
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+ if (fdisk_set_disklabel_id_from_string(sf->cxt, str) != 0)
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+ errx(EXIT_FAILURE, _("%s: failed to set disklabel ID"), devname);
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+
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+ return write_changes(sf);
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+}
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+
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static void sfdisk_print_partition(struct sfdisk *sf, size_t n)
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{
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struct fdisk_partition *pa = NULL;
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@@ -1941,6 +1982,9 @@ static void __attribute__((__noreturn__)) usage(void)
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fputs(_(" --part-uuid <dev> <part> [<uuid>] print or change partition uuid\n"), out);
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fputs(_(" --part-attrs <dev> <part> [<str>] print or change partition attributes\n"), out);
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+ fputs(USAGE_SEPARATOR, out);
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+ fputs(_(" --disk-id <dev> [<str>] print or change disk label ID (UUID)\n"), out);
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+
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fputs(USAGE_SEPARATOR, out);
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fputs(_(" <dev> device (usually disk) path\n"), out);
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fputs(_(" <part> partition number\n"), out);
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@@ -2007,6 +2051,7 @@ int main(int argc, char *argv[])
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OPT_PARTLABEL,
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OPT_PARTTYPE,
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OPT_PARTATTRS,
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+ OPT_DISKID,
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OPT_BYTES,
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OPT_COLOR,
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OPT_MOVEDATA,
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@@ -2052,6 +2097,8 @@ int main(int argc, char *argv[])
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{ "part-type", no_argument, NULL, OPT_PARTTYPE },
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{ "part-attrs", no_argument, NULL, OPT_PARTATTRS },
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+ { "disk-id", no_argument, NULL, OPT_DISKID },
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+
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{ "show-pt-geometry", no_argument, NULL, 'G' }, /* deprecated */
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{ "unit", required_argument, NULL, 'u' }, /* deprecated */
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{ "Linux", no_argument, NULL, 'L' }, /* deprecated */
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@@ -2192,6 +2239,9 @@ int main(int argc, char *argv[])
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case OPT_PARTATTRS:
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sf->act = ACT_PARTATTRS;
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break;
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+ case OPT_DISKID:
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+ sf->act = ACT_DISKID;
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+ break;
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case OPT_NOREREAD:
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sf->noreread = 1;
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break;
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@@ -2296,6 +2346,10 @@ int main(int argc, char *argv[])
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rc = command_partattrs(sf, argc - optind, argv + optind);
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break;
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+ case ACT_DISKID:
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+ rc = command_diskid(sf, argc - optind, argv + optind);
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+ break;
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+
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case ACT_REORDER:
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rc = command_reorder(sf, argc - optind, argv + optind);
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break;
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--
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2.18.2
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