This is a patch I've been modifying for a dozen years...
I wanted fdisk -l to return the partition names of all the
disks. I find it clumsy to run cfdisk on each disk...and you
get wonderfully confusing results when you mount by name and
two partitions on the machine with the same name...and its useful
to know then to guess on these names (especially if you boot by name,
which I like to do).
fdisk -l looks like:
: leisner@gateway 10:36:34;./fdisk -l
Disk /dev/sda: 36.7 GB, 36703918080 bytes
64 heads, 32 sectors/track, 35003 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Disk identifier: 0x0cb10cb1
Device Boot Start End Blocks Id System
/dev/sda1 * 1 144 147440 83 Linux (/boot)
/dev/sda2 145 9160 9232384 5 Extended
/dev/sda3 19177 28713 9765888 83 Linux (suse-10-2)
/dev/sda5 * 145 1576 1466352 83 Linux (/1)
/dev/sda6 1577 8730 7325680 83 Linux (/usr1)
/dev/sda7 8731 9160 440304 82 Linux swap / Solaris
Disk /dev/sdb: 147.0 GB, 147086327808 bytes
255 heads, 63 sectors/track, 17882 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xfd794735
Device Boot Start End Blocks Id System
/dev/sdb1 1 9120 73256368+ 5 Extended
/dev/sdb2 14236 17882 29294527+ 83 Linux (iso)
/dev/sdb5 1 1216 9767457 83 Linux (home)
/dev/sdb6 1217 3040 14651248+ 83 Linux (usr-local)
/dev/sdb7 3041 5472 19535008+ b W95 FAT32
/dev/sdb8 5473 7904 19535008+ 83 Linux (pictures)
/dev/sdb9 7905 9120 9767488+ 83 Linux
Disk /dev/sdc: 36.7 GB, 36748945408 bytes
64 heads, 32 sectors/track, 35046 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Disk identifier: 0x13741373
Device Boot Start End Blocks Id System
/dev/sdc1 1 9537 9765872 83 Linux (backup)
Disk /dev/sdd: 73.5 GB, 73543163904 bytes
255 heads, 63 sectors/track, 8941 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x13241323
Device Boot Start End Blocks Id System
/dev/sdd1 1 1459 11719386 7 HPFS/NTFS
/dev/sdd2 * 1460 6681 41945715 f W95 Ext'd (LBA)
/dev/sdd5 1460 1485 208813+ 83 Linux (sdd-suse-boot)
/dev/sdd6 1486 2791 10490413+ 83 Linux (sdd-suse-root)
/dev/sdd7 2792 2948 1261071 82 Linux swap / Solaris
/dev/sdd8 2949 5380 19535008+ 83 Linux (images)
It could be extended to other types of disks fairly easily...
I didn't see a way to get a list of active partition names on a stock linux
system.
Here's the patch -- its wrt util-linux-ng-2.13-rc2
--- Makefile.am 2007/07/22 02:21:51 1.1
+++ Makefile.am 2007/07/22 02:39:25
@@ -8,7 +8,7 @@
sbin_PROGRAMS = fdisk
man_MANS = fdisk.8
-fdisk_SOURCES = fdisk.c fdiskbsdlabel.c fdisksgilabel.c \
+fdisk_SOURCES = ext2_volumename.c fdisk.c fdiskbsdlabel.c fdisksgilabel.c \
fdisksunlabel.c fdiskaixlabel.c fdiskmaclabel.c partname.c \
fdisk.h fdisksunlabel.h fdisksgilabel.h fdiskaixlabel.h \
fdiskbsdlabel.h fdiskmaclabel.h $(fdisk_common)
--- ext2_volumename.c 2007/07/22 02:16:47 1.1
+++ ext2_volumename.c 2007/07/22 02:51:26
@@ -0,0 +1,100 @@
+/*
+ * From:
+ * e2label.c - Print or change the volume label on an ext2 fs
+ *
+ * Written by Andries Brouwer (aeb@xxxxxx), 970714
+ *
+ * Copyright 1997, 1998 by Theodore Ts'o.
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Public
+ * License.
+ * %End-Header%
+ *
+ * Modified marty leisner Dec 18, 1998
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <termios.h>
+#include <time.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#define EXT2_SUPER_MAGIC 0xEF53
+
+#define VOLNAMSZ 16
+
+static struct ext2_super_block {
+ char s_dummy0[56];
+ unsigned char s_magic[2];
+ char s_dummy1[62];
+ char s_volume_name[VOLNAMSZ];
+ char s_last_mounted[64];
+ char s_dummy2[824];
+} sb;
+
+/* stick valid superblock in sb.
+ * return 0 if it works, -1 otherwise
+ */
+static int read_superblock(char *dev)
+{
+ int fd;
+
+ fd = open(dev, O_RDONLY);
+ if (fd < 0) {
+ perror(dev);
+ fprintf (stderr, "e2label: cannot open %s\n", dev);
+ return -1;
+ }
+ if (lseek(fd, 1024, SEEK_SET) != 1024) {
+ close(fd);
+ perror(dev);
+ fprintf (stderr, "e2label: cannot seek to superblock\n");
+ return -1;
+ }
+
+ if (read(fd, (char *) &sb, sizeof(sb)) != sizeof(sb)) {
+ close(fd);
+ perror(dev);
+ fprintf (stderr, "e2label: error reading superblock\n");
+ return -1;
+ }
+
+ close(fd);
+
+ if (sb.s_magic[0] + 256*sb.s_magic[1] != EXT2_SUPER_MAGIC) {
+#if 0
+ fprintf (stderr, "e2label: not an ext2 filesystem\n");
+#endif
+ return -1;
+ }
+ return 0;
+
+}
+
+
+
+/* return a NULL point on failure, or the actual NULL volume name
+ * if it works
+ */
+char *extfs_volume_name(char *base, int device)
+{
+ char device_name[80];
+ static char volume_name[VOLNAMSZ + 1];
+ int result;
+
+ sprintf(device_name, "%s%d", base, device); /* no error detection */
+ result = read_superblock(device_name);
+ if(result < 0)
+ return NULL;
+
+ bzero(volume_name, sizeof(volume_name));
+ strncpy(volume_name, sb.s_volume_name, VOLNAMSZ);
+ return volume_name;
+
+
+}
--- fdisk.c 2007/07/22 02:09:33 1.1
+++ fdisk.c 2007/07/22 02:09:39
@@ -1816,7 +1816,7 @@
if (sector_size > 1024)
pblocks *= (sector_size / 1024);
printf(
- "%s %c %11lu %11lu %11lu%c %2x %s\n",
+ "%s %c %11lu %11lu %11lu%c %2x %s",
partname(disk_device, i+1, w+2),
/* boot flag */ !p->boot_ind ? ' ' : p->boot_ind == ACTIVE_FLAG
? '*' : '?',
@@ -1827,6 +1827,16 @@
/* type id */ p->sys_ind,
/* type name */ (type = partition_type(p->sys_ind)) ?
type : _("Unknown"));
+
+ if(LINUX_NATIVE == p->sys_ind) {
+ char *p;
+
+ p = extfs_volume_name(disk_device, i+ 1);
+ if(p && *p ) {
+ printf(" (%s)", p);
+ }
+ }
+ printf("\n");
check_consistency(p, i);
}
}
--- fdisk.h 2007/07/22 02:14:38 1.1
+++ fdisk.h 2007/07/22 02:17:22
@@ -107,4 +107,7 @@
/* prototypes for fdisksgilabel.c */
extern int valid_part_table_flag(unsigned char *b);
+/* prototypes for ext2_volumename.c */
+extern char *extfs_volume_name(char *base, int device);
+
#define PROC_PARTITIONS "/proc/partitions"
-
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