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Removing btrfsctl, btrfs-vol, btrfs-show

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With the commit 002d021c (committed October 2011)
btrfsctl, btrfs-vol, btrfs-show were declared deprecated.
The last patches related to these commands are dated December 2010.

These tools are replaced by the "btrfs" tool in all the
functionality.

This commit removes all the related code.

Signed-off-by: Goffredo Baroncelli <kreijack@inwind.it>
Signed-off-by: David Sterba <dsterba@suse.cz>
This commit is contained in:
Goffredo Baroncelli 2012-06-09 07:52:10 +02:00 committed by David Sterba
parent cf7e3472d7
commit f243fcd1b2
11 changed files with 3 additions and 699 deletions
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3
.gitignore vendored
View File

@ -8,10 +8,7 @@ btrfs
btrfs.static
btrfs-debug-tree
btrfs-map-logical
btrfs-show
btrfs-vol
btrfsck
btrfsctl
calc-size
ioctl-test
dir-test

5
INSTALL
View File

@ -1,10 +1,5 @@
Install Instructions
Btrfs puts snapshots and subvolumes into the root directory of the FS. This
directory can only be changed by btrfsctl right now, and normal filesystem
operations do not work on it. The default subvolume is called 'default',
and you can create files and directories in mount_point/default
Btrfs uses libcrc32c in the kernel for file and metadata checksums. You need
to compile the kernel with:

14
Makefile
View File

@ -44,7 +44,7 @@ endif
MAKEOPTS = --no-print-directory Q=$(Q)
progs = btrfsctl mkfs.btrfs btrfs-debug-tree btrfs-show btrfs-vol btrfsck \
progs = mkfs.btrfs btrfs-debug-tree btrfsck \
btrfs btrfs-map-logical btrfs-image btrfs-zero-log btrfs-convert \
btrfs-find-root btrfstune btrfs-show-super
@ -127,18 +127,6 @@ btrfs-find-root.static: $(static_objects) find-root.static.o
@echo " [LD] $@"
$(Q)$(CC) $(STATIC_CFLAGS) -o btrfs-find-root.static find-root.static.o $(static_objects) $(STATIC_LDFLAGS) $(STATIC_LIBS)
btrfsctl: $(objects) $(libs) btrfsctl.o
@echo " [LD] $@"
$(Q)$(CC) $(CFLAGS) -o btrfsctl btrfsctl.o $(objects) $(LDFLAGS) $(LIBS)
btrfs-vol: $(objects) $(libs) btrfs-vol.o
@echo " [LD] $@"
$(Q)$(CC) $(CFLAGS) -o btrfs-vol btrfs-vol.o $(objects) $(LDFLAGS) $(LIBS)
btrfs-show: $(objects) $(libs) btrfs-show.o
@echo " [LD] $@"
$(Q)$(CC) $(CFLAGS) -o btrfs-show btrfs-show.o $(objects) $(LDFLAGS) $(LIBS)
# For backward compatibility, 'btrfs' changes behaviour to fsck if it's named 'btrfsck'
btrfsck: btrfs
@echo " [LN] $@"

156
btrfs-show.c
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@ -1,156 +0,0 @@
/*
* Copyright (C) 2007 Oracle. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#define _GNU_SOURCE
#ifndef __CHECKER__
#include <sys/ioctl.h>
#include <sys/mount.h>
#include "ioctl.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <getopt.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <dirent.h>
#include <uuid/uuid.h>
#include "kerncompat.h"
#include "ctree.h"
#include "transaction.h"
#include "utils.h"
#include "volumes.h"
#include "version.h"
static int uuid_search(struct btrfs_fs_devices *fs_devices, char *search)
{
struct list_head *cur;
struct btrfs_device *device;
list_for_each(cur, &fs_devices->devices) {
device = list_entry(cur, struct btrfs_device, dev_list);
if ((device->label && strcmp(device->label, search) == 0) ||
strcmp(device->name, search) == 0)
return 1;
}
return 0;
}
static void print_one_uuid(struct btrfs_fs_devices *fs_devices)
{
char uuidbuf[37];
struct list_head *cur;
struct btrfs_device *device;
char *super_bytes_used;
u64 devs_found = 0;
u64 total;
uuid_unparse(fs_devices->fsid, uuidbuf);
device = list_entry(fs_devices->devices.next, struct btrfs_device,
dev_list);
if (device->label && device->label[0])
printf("Label: %s ", device->label);
else
printf("Label: none ");
super_bytes_used = pretty_sizes(device->super_bytes_used);
total = device->total_devs;
printf(" uuid: %s\n\tTotal devices %llu FS bytes used %s\n", uuidbuf,
(unsigned long long)total, super_bytes_used);
free(super_bytes_used);
list_for_each(cur, &fs_devices->devices) {
char *total_bytes;
char *bytes_used;
device = list_entry(cur, struct btrfs_device, dev_list);
total_bytes = pretty_sizes(device->total_bytes);
bytes_used = pretty_sizes(device->bytes_used);
printf("\tdevid %4llu size %s used %s path %s\n",
(unsigned long long)device->devid,
total_bytes, bytes_used, device->name);
free(total_bytes);
free(bytes_used);
devs_found++;
}
if (devs_found < total) {
printf("\t*** Some devices missing\n");
}
printf("\n");
}
static void print_usage(void)
{
fprintf(stderr, "usage: btrfs-show [search label or device]\n");
fprintf(stderr, "%s\n", BTRFS_BUILD_VERSION);
exit(1);
}
static struct option long_options[] = {
/* { "byte-count", 1, NULL, 'b' }, */
{ 0, 0, 0, 0}
};
int main(int ac, char **av)
{
struct list_head *all_uuids;
struct btrfs_fs_devices *fs_devices;
struct list_head *cur_uuid;
char *search = NULL;
int ret;
int option_index = 0;
printf( "**\n"
"** WARNING: this program is considered deprecated\n"
"** Please consider to switch to the btrfs utility\n"
"**\n");
while(1) {
int c;
c = getopt_long(ac, av, "", long_options,
&option_index);
if (c < 0)
break;
switch(c) {
default:
print_usage();
}
}
ac = ac - optind;
if (ac != 0) {
search = av[optind];
}
ret = btrfs_scan_one_dir("/dev", 0);
if (ret)
fprintf(stderr, "error %d while scanning\n", ret);
all_uuids = btrfs_scanned_uuids();
list_for_each(cur_uuid, all_uuids) {
fs_devices = list_entry(cur_uuid, struct btrfs_fs_devices,
list);
if (search && uuid_search(fs_devices, search) == 0)
continue;
print_one_uuid(fs_devices);
}
printf("%s\n", BTRFS_BUILD_VERSION);
return 0;
}

175
btrfs-vol.c
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@ -1,175 +0,0 @@
/*
* Copyright (C) 2007 Oracle. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#define _GNU_SOURCE
#ifndef __CHECKER__
#include <sys/ioctl.h>
#include <sys/mount.h>
#include "ioctl.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <getopt.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <dirent.h>
#include <uuid/uuid.h>
#include "kerncompat.h"
#include "ctree.h"
#include "transaction.h"
#include "utils.h"
#include "volumes.h"
#ifdef __CHECKER__
#define BLKGETSIZE64 0
#define BTRFS_IOC_SNAP_CREATE 0
#define BTRFS_IOC_ADD_DEV 0
#define BTRFS_IOC_RM_DEV 0
#define BTRFS_VOL_NAME_MAX 255
struct btrfs_ioctl_vol_args { char name[BTRFS_VOL_NAME_MAX]; };
static inline int ioctl(int fd, int define, void *arg) { return 0; }
#endif
static void print_usage(void)
{
fprintf(stderr, "usage: btrfs-vol [options] mount_point\n");
fprintf(stderr, "\t-a device add one device\n");
fprintf(stderr, "\t-b balance chunks across all devices\n");
fprintf(stderr, "\t-r device remove one device\n");
exit(1);
}
static struct option long_options[] = {
/* { "byte-count", 1, NULL, 'b' }, */
{ "add", 1, NULL, 'a' },
{ "balance", 0, NULL, 'b' },
{ "remove", 1, NULL, 'r' },
{ 0, 0, 0, 0}
};
int main(int ac, char **av)
{
struct stat st;
char *device = NULL;
char *mnt = NULL;
int ret;
int option_index = 0;
int cmd = 0;
int fd;
int devfd = 0;
DIR *dirstream;
struct btrfs_ioctl_vol_args args;
u64 dev_block_count = 0;
printf( "**\n"
"** WARNING: this program is considered deprecated\n"
"** Please consider to switch to the btrfs utility\n"
"**\n");
while(1) {
int c;
c = getopt_long(ac, av, "a:br:", long_options,
&option_index);
if (c < 0)
break;
switch(c) {
case 'a':
device = strdup(optarg);
cmd = BTRFS_IOC_ADD_DEV;
break;
case 'b':
cmd = BTRFS_IOC_BALANCE;
break;
case 'r':
device = strdup(optarg);
cmd = BTRFS_IOC_RM_DEV;
break;
default:
print_usage();
}
}
ac = ac - optind;
if (ac == 0 || !cmd) {
if (!ac)
fprintf(stderr, "No mountpoint specified\n");
else
fprintf(stderr, "No command specified\n");
print_usage();
}
mnt = av[optind];
if (device && strcmp(device, "missing") == 0 &&
cmd == BTRFS_IOC_RM_DEV) {
fprintf(stderr, "removing missing devices from %s\n", mnt);
} else if (cmd != BTRFS_IOC_BALANCE) {
if (cmd == BTRFS_IOC_ADD_DEV) {
ret = check_mounted(device);
if (ret < 0) {
fprintf(stderr,
"error checking %s mount status\n",
device);
exit(1);
}
if (ret == 1) {
fprintf(stderr, "%s is mounted\n", device);
exit(1);
}
}
devfd = open(device, O_RDWR);
if (devfd < 0) {
fprintf(stderr, "Unable to open device %s\n", device);
exit(1);
}
ret = fstat(devfd, &st);
if (ret) {
fprintf(stderr, "Unable to stat %s\n", device);
exit(1);
}
if (!S_ISBLK(st.st_mode)) {
fprintf(stderr, "%s is not a block device\n", device);
exit(1);
}
}
dirstream = opendir(mnt);
if (!dirstream) {
fprintf(stderr, "Unable to open directory %s\n", mnt);
exit(1);
}
if (cmd == BTRFS_IOC_ADD_DEV) {
int mixed = 0;
ret = btrfs_prepare_device(devfd, device, 1, &dev_block_count,
0, &mixed, 0);
if (ret) {
fprintf(stderr, "Unable to init %s\n", device);
exit(1);
}
}
fd = dirfd(dirstream);
if (device)
strncpy_null(args.name, device);
else
args.name[0] = '\0';
ret = ioctl(fd, cmd, &args);
printf("ioctl returns %d\n", ret);
return 0;
}

273
btrfsctl.c
View File

@ -1,273 +0,0 @@
/*
* Copyright (C) 2007 Oracle. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#ifndef __CHECKER__
#include <sys/ioctl.h>
#include <sys/mount.h>
#include "ioctl.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <dirent.h>
#include <libgen.h>
#include <stdlib.h>
#include "kerncompat.h"
#include "ctree.h"
#include "transaction.h"
#include "utils.h"
#include "version.h"
#ifdef __CHECKER__
#define BLKGETSIZE64 0
#define BTRFS_IOC_SNAP_CREATE 0
#define BTRFS_VOL_NAME_MAX 255
struct btrfs_ioctl_vol_args { char name[BTRFS_VOL_NAME_MAX]; };
static inline int ioctl(int fd, int define, void *arg) { return 0; }
#endif
static void print_usage(void)
{
printf("usage: btrfsctl [ -d file|dir] [ -s snap_name subvol|tree ]\n");
printf(" [-r size] [-A device] [-a] [-c] [-D dir .]\n");
printf("\t-d filename: defragments one file\n");
printf("\t-d directory: defragments the entire Btree\n");
printf("\t-s snap_name dir: creates a new snapshot of dir\n");
printf("\t-S subvol_name dir: creates a new subvolume\n");
printf("\t-r [+-]size[gkm]: resize the FS by size amount\n");
printf("\t-A device: scans the device file for a Btrfs filesystem\n");
printf("\t-a: scans all devices for Btrfs filesystems\n");
printf("\t-c: forces a single FS sync\n");
printf("\t-D: delete snapshot\n");
printf("\t-m [tree id] directory: set the default mounted subvolume"
" to the [tree id] or the directory\n");
printf("%s\n", BTRFS_BUILD_VERSION);
exit(1);
}
static int btrfsctl_open_file_or_dir(const char *fname)
{
int ret;
struct stat st;
DIR *dirstream;
int fd;
ret = stat(fname, &st);
if (ret < 0) {
perror("stat:");
exit(1);
}
if (S_ISDIR(st.st_mode)) {
dirstream = opendir(fname);
if (!dirstream) {
perror("opendir");
exit(1);
}
fd = dirfd(dirstream);
} else {
fd = open(fname, O_RDWR);
}
if (fd < 0) {
perror("open");
exit(1);
}
return fd;
}
int main(int ac, char **av)
{
char *fname = NULL;
char *snap_location = NULL;
int snap_fd = 0;
int fd;
int ret;
struct btrfs_ioctl_vol_args args;
char *name = NULL;
int i;
unsigned long command = 0;
int len;
char *pos;
char *fullpath;
u64 objectid = 0;
printf( "**\n"
"** WARNING: this program is considered deprecated\n"
"** Please consider to switch to the btrfs utility\n"
"**\n");
if (ac == 2 && strcmp(av[1], "-a") == 0) {
fprintf(stderr, "Scanning for Btrfs filesystems\n");
btrfs_scan_one_dir("/dev", 1);
exit(0);
}
for (i = 1; i < ac; i++) {
if (strcmp(av[i], "-s") == 0) {
if (i + 1 >= ac - 1) {
fprintf(stderr, "-s requires an arg");
print_usage();
}
fullpath = av[i + 1];
snap_location = strdup(fullpath);
snap_location = dirname(snap_location);
snap_fd = btrfsctl_open_file_or_dir(snap_location);
name = strdup(fullpath);
name = basename(name);
len = strlen(name);
if (len == 0 || len >= BTRFS_VOL_NAME_MAX) {
fprintf(stderr,
"snapshot name zero length or too long\n");
exit(1);
}
if (strchr(name, '/')) {
fprintf(stderr,
"error: / not allowed in names\n");
exit(1);
}
command = BTRFS_IOC_SNAP_CREATE;
} else if (strcmp(av[i], "-S") == 0) {
if (i + 1 >= ac - 1) {
fprintf(stderr, "-S requires an arg");
print_usage();
}
name = av[i + 1];
len = strlen(name);
if (len == 0 || len >= BTRFS_VOL_NAME_MAX) {
fprintf(stderr,
"snapshot name zero length or too long\n");
exit(1);
}
if (strchr(name, '/')) {
fprintf(stderr,
"error: / not allowed in names\n");
exit(1);
}
command = BTRFS_IOC_SUBVOL_CREATE;
} else if (strcmp(av[i], "-d") == 0) {
if (i >= ac - 1) {
fprintf(stderr, "-d requires an arg\n");
print_usage();
}
command = BTRFS_IOC_DEFRAG;
} else if (strcmp(av[i], "-D") == 0) {
if (i >= ac - 1) {
fprintf(stderr, "-D requires an arg\n");
print_usage();
}
command = BTRFS_IOC_SNAP_DESTROY;
name = av[i + 1];
len = strlen(name);
pos = strchr(name, '/');
if (pos) {
if (*(pos + 1) == '\0')
*(pos) = '\0';
else {
fprintf(stderr,
"error: / not allowed in names\n");
exit(1);
}
}
if (len == 0 || len >= BTRFS_VOL_NAME_MAX) {
fprintf(stderr, "-D size too long\n");
exit(1);
}
} else if (strcmp(av[i], "-A") == 0) {
if (i >= ac - 1) {
fprintf(stderr, "-A requires an arg\n");
print_usage();
}
command = BTRFS_IOC_SCAN_DEV;
} else if (strcmp(av[i], "-r") == 0) {
if (i >= ac - 1) {
fprintf(stderr, "-r requires an arg\n");
print_usage();
}
name = av[i + 1];
len = strlen(name);
if (len == 0 || len >= BTRFS_VOL_NAME_MAX) {
fprintf(stderr, "-r size too long\n");
exit(1);
}
command = BTRFS_IOC_RESIZE;
} else if (strcmp(av[i], "-c") == 0) {
command = BTRFS_IOC_SYNC;
} else if (strcmp(av[i], "-m") == 0) {
command = BTRFS_IOC_DEFAULT_SUBVOL;
if (i == ac - 3) {
objectid = (unsigned long long)
strtoll(av[i + 1], NULL, 0);
if (errno == ERANGE) {
fprintf(stderr, "invalid tree id\n");
exit(1);
}
}
}
}
if (command == 0) {
fprintf(stderr, "no valid commands given\n");
print_usage();
exit(1);
}
fname = av[ac - 1];
if (command == BTRFS_IOC_SCAN_DEV) {
fd = open("/dev/btrfs-control", O_RDWR);
if (fd < 0) {
perror("failed to open /dev/btrfs-control");
exit(1);
}
name = fname;
} else {
fd = btrfsctl_open_file_or_dir(fname);
}
if (name)
strncpy_null(args.name, name);
else
args.name[0] = '\0';
if (command == BTRFS_IOC_SNAP_CREATE) {
args.fd = fd;
ret = ioctl(snap_fd, command, &args);
} else if (command == BTRFS_IOC_DEFAULT_SUBVOL) {
printf("objectid is %llu\n", (unsigned long long)objectid);
ret = ioctl(fd, command, &objectid);
} else
ret = ioctl(fd, command, &args);
if (ret < 0) {
perror("ioctl:");
exit(1);
}
if (ret == 0) {
printf("operation complete\n");
} else {
printf("ioctl failed with error %d\n", ret);
}
printf("%s\n", BTRFS_BUILD_VERSION);
if (ret)
exit(1);
return 0;
}

3
man/Makefile
View File

@ -11,8 +11,7 @@ man8dir = $(mandir)/man8
# list only those we use
.SUFFIXES: .in .gz
MANPAGES = mkfs.btrfs.8.gz btrfsctl.8.gz btrfsck.8.gz btrfs-image.8.gz \
btrfs-show.8.gz btrfs.8.gz
MANPAGES = mkfs.btrfs.8.gz btrfsck.8.gz btrfs-image.8.gz btrfs.8.gz
INFILES = ${MANPAGES:.in=.gz}
all: $(MANPAGES)

2
man/btrfs-image.8.in
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@ -31,4 +31,4 @@ and not suitable for any uses other than benchmarking and review.
Please refer to the btrfs wiki
http://btrfs.wiki.kernel.org for further details.
.SH SEE ALSO
.BR btrfsck (8), btrfsctl (8), mkfs.btrfs (8)
.BR btrfsck (8), mkfs.btrfs (8)

22
man/btrfs-show.8.in
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@ -1,22 +0,0 @@
.TH BTRFS-SHOW 8
.SH NAME
btrfs-show \- scan the /dev directory for btrfs partitions and print results.
.SH SYNOPSIS
.B btrfs-show
.SH NOTE
.B btrfs-show
is deprecated. Please consider to switch to the btrfs utility.
.SH DESCRIPTION
.B btrfs-show
is used to scan the /dev directory for btrfs partitions and display brief
information such as lable, uuid, etc of each btrfs partition.
.SH OPTIONS
none
.SH AVAILABILITY
.B btrfs-show
is part of btrfs-progs. Btrfs is currently under heavy development,
and not suitable for any uses other than benchmarking and review.
Please refer to the btrfs wiki
http://btrfs.wiki.kernel.org for further details.
.SH SEE ALSO
.BR btrfsck (8), btrfsctl (8), mkfs.btrfs (8), btrfs-image (8)

1
man/btrfsck.8.in
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@ -14,4 +14,3 @@ Please refer to the btrfs wiki http://btrfs.wiki.kernel.org for
further details.
.SH SEE ALSO
.BR mkfs.btrfs (8)
.BR btrfsctl (8)

48
man/btrfsctl.8.in
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@ -1,48 +0,0 @@
.TH BTRFSCTL 8
.SH NAME
btrfsctl \- control a btrfs filesystem
.SH SYNOPSIS
.B btrfsctl
[ \fB\-d\fP\fI file|directory \fP ]
[ \fB\-s\fP\fI snapshot-name directory\fP ]
[ \fB \-S\fP\fI subvolume-name directory\fP ]
[ \fB \-r\fP\fI [+-]size\fP ]
[ \fB \-A\fP\fI device\fP ]
[ \fB \-a\fP ]
[ \fB \-c\fP ]
.SH NOTE
B btrfsctl
is deprecated. Please consider to switch to the btrfs utility.
.SH DESCRIPTION
.B btrfsctl
is used to control the filesystem and the files and directories stored. It is the tool to create a new snapshot for the filesystem.
.SH OPTIONS
.TP
\fB\-d\fR \fIfile|directory\fR
Defragment a file or a directory. If the argument is a directory, the entire b-tree under the directory is defragged.
.TP
\fB\-s\fR \fIsnapshot-name directory\fR
Creates a new \fIsnapshot\fP of the \fIdirectory\fP specified.
.TP
\fB\-S\fR \fIsubvolume-name directory\fR
Creates a new subvolume.
.TP
\fB\-r\fR \fI[+|-]size\fR
Resizes the filesystem with the \fIsize\fP specified. If the value is preceded with a signed symbol, the filesystem is resized with respect to the current filesystem size. \fIsize\fP can be suffixed by k,m or g to represent kilobytes, megabytes, or gigabytes respectively.
.TP
\fB\-A\fR \fIdevice\fR
Scans the \fIdevice\fR for btrfs filesystem.
.TP
\fB\-a\fR
Scans all devices present in the system for btrfs filesystem.
.TP
\fB\-c\fR
Forces a filesystem sync.
.SH AVAILABILITY
.B btrfsctl
is part of btrfs-progs. Btrfs is currently under heavy development,
and not suitable for any uses other than benchmarking and review.
Please refer to the btrfs wiki http://btrfs.wiki.kernel.org for
further details.
.SH SEE ALSO
.BR mkfs.btrfs (8)