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util-linux/disk-utils/sfdisk.c

2221 lines
57 KiB

/*
* Copyright (C) 1995 Andries E. Brouwer (aeb@cwi.nl)
* Copyright (C) 2014 Karel Zak <kzak@redhat.com>
*
* This program is free software. You can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation: either Version 1
* or (at your option) any later version.
*
* A.V. Le Blanc (LeBlanc@mcc.ac.uk) wrote Linux fdisk 1992-1994,
* patched by various people (faith@cs.unc.edu, martin@cs.unc.edu,
* leisner@sdsp.mc.xerox.com, esr@snark.thyrsus.com, aeb@cwi.nl)
* 1993-1995, with version numbers (as far as I have seen) 0.93 - 2.0e.
* This program had (head,sector,cylinder) as basic unit, and was
* (therefore) broken in several ways for the use on larger disks -
* for example, my last patch (from 2.0d to 2.0e) was required
* to allow a partition to cross cylinder 8064, and to write an
* extended partition past the 4GB mark.
*
* Karel Zak wrote new sfdisk based on libfdisk from util-linux
* in 2014.
*/
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#include <getopt.h>
#include <sys/stat.h>
#include <assert.h>
#include <fcntl.h>
#include <libsmartcols.h>
#ifdef HAVE_LIBREADLINE
# define _FUNCTION_DEF
# include <readline/readline.h>
#endif
#include <libgen.h>
#include "c.h"
#include "xalloc.h"
#include "nls.h"
#include "debug.h"
#include "strutils.h"
#include "closestream.h"
#include "colors.h"
#include "blkdev.h"
#include "all-io.h"
#include "rpmatch.h"
#include "optutils.h"
#include "libfdisk.h"
#include "fdisk-list.h"
/*
* sfdisk debug stuff (see fdisk.h and include/debug.h)
*/
static UL_DEBUG_DEFINE_MASK(sfdisk);
UL_DEBUG_DEFINE_MASKNAMES(sfdisk) = UL_DEBUG_EMPTY_MASKNAMES;
#define SFDISKPROG_DEBUG_INIT (1 << 1)
#define SFDISKPROG_DEBUG_PARSE (1 << 2)
#define SFDISKPROG_DEBUG_MISC (1 << 3)
#define SFDISKPROG_DEBUG_ASK (1 << 4)
#define SFDISKPROG_DEBUG_ALL 0xFFFF
#define DBG(m, x) __UL_DBG(sfdisk, SFDISKPROG_DEBUG_, m, x)
#define ON_DBG(m, x) __UL_DBG_CALL(sfdisk, SFDISKPROG_DEBUG_, m, x)
enum {
ACT_FDISK = 1,
ACT_ACTIVATE,
ACT_CHANGE_ID,
ACT_DUMP,
ACT_LIST,
ACT_LIST_FREE,
ACT_LIST_TYPES,
ACT_REORDER,
ACT_SHOW_SIZE,
ACT_SHOW_GEOM,
ACT_VERIFY,
ACT_PARTTYPE,
ACT_PARTUUID,
ACT_PARTLABEL,
ACT_PARTATTRS,
ACT_DELETE
};
struct sfdisk {
int act; /* ACT_* */
int partno; /* -N <partno>, default -1 */
int wipemode; /* remove foreign signatures from disk */
int pwipemode; /* remove foreign signatures from partitions */
const char *label; /* --label <label> */
const char *label_nested; /* --label-nested <label> */
const char *backup_file; /* -O <path> */
const char *move_typescript; /* --movedata <typescript> */
char *prompt;
struct fdisk_context *cxt; /* libfdisk context */
struct fdisk_partition *orig_pa; /* -N <partno> before the change */
unsigned int verify : 1, /* call fdisk_verify_disklabel() */
quiet : 1, /* suppress extra messages */
interactive : 1, /* running on tty */
noreread : 1, /* don't check device is in use */
force : 1, /* do also stupid things */
backup : 1, /* backup sectors before write PT */
container : 1, /* PT contains container (MBR extended) partitions */
append : 1, /* don't create new PT, append partitions only */
json : 1, /* JSON dump */
movedata: 1, /* move data after resize */
notell : 1, /* don't tell kernel aout new PT */
noact : 1; /* do not write to device */
};
#define SFDISK_PROMPT ">>> "
static void sfdiskprog_init_debug(void)
{
__UL_INIT_DEBUG_FROM_ENV(sfdisk, SFDISKPROG_DEBUG_, 0, SFDISK_DEBUG);
}
static int get_user_reply(const char *prompt, char *buf, size_t bufsz)
{
char *p;
size_t sz;
#ifdef HAVE_LIBREADLINE
if (isatty(STDIN_FILENO)) {
p = readline(prompt);
if (!p)
return 1;
memcpy(buf, p, bufsz);
free(p);
} else
#endif
{
fputs(prompt, stdout);
fflush(stdout);
if (!fgets(buf, bufsz, stdin))
return 1;
}
for (p = buf; *p && !isgraph(*p); p++); /* get first non-blank */
if (p > buf)
memmove(buf, p, p - buf); /* remove blank space */
sz = strlen(buf);
if (sz && *(buf + sz - 1) == '\n')
*(buf + sz - 1) = '\0';
DBG(ASK, ul_debug("user's reply: >>>%s<<<", buf));
return 0;
}
static int ask_callback(struct fdisk_context *cxt __attribute__((__unused__)),
struct fdisk_ask *ask,
void *data)
{
struct sfdisk *sf = (struct sfdisk *) data;
int rc = 0;
assert(ask);
switch(fdisk_ask_get_type(ask)) {
case FDISK_ASKTYPE_INFO:
if (sf->quiet)
break;
fputs(fdisk_ask_print_get_mesg(ask), stdout);
fputc('\n', stdout);
break;
case FDISK_ASKTYPE_WARNX:
fflush(stdout);
color_scheme_fenable("warn", UL_COLOR_RED, stderr);
fputs(fdisk_ask_print_get_mesg(ask), stderr);
color_fdisable(stderr);
fputc('\n', stderr);
break;
case FDISK_ASKTYPE_WARN:
fflush(stdout);
color_scheme_fenable("warn", UL_COLOR_RED, stderr);
fputs(fdisk_ask_print_get_mesg(ask), stderr);
errno = fdisk_ask_print_get_errno(ask);
fprintf(stderr, ": %m\n");
color_fdisable(stderr);
break;
case FDISK_ASKTYPE_YESNO:
{
char buf[BUFSIZ];
fputc('\n', stdout);
do {
int x;
fputs(fdisk_ask_get_query(ask), stdout);
rc = get_user_reply(_(" [Y]es/[N]o: "), buf, sizeof(buf));
if (rc)
break;
x = rpmatch(buf);
if (x == RPMATCH_YES || x == RPMATCH_NO) {
fdisk_ask_yesno_set_result(ask, x);
break;
}
} while(1);
DBG(ASK, ul_debug("yes-no ask: reply '%s' [rc=%d]", buf, rc));
break;
}
default:
break;
}
return rc;
}
static void sfdisk_init(struct sfdisk *sf)
{
fdisk_init_debug(0);
scols_init_debug(0);
sfdiskprog_init_debug();
sf->cxt = fdisk_new_context();
if (!sf->cxt)
err(EXIT_FAILURE, _("failed to allocate libfdisk context"));
fdisk_set_ask(sf->cxt, ask_callback, (void *) sf);
fdisk_enable_bootbits_protection(sf->cxt, 1);
if (sf->label_nested) {
struct fdisk_context *x = fdisk_new_nested_context(sf->cxt,
sf->label_nested);
if (!x)
err(EXIT_FAILURE, _("failed to allocate nested libfdisk context"));
/* the original context is available by fdisk_get_parent() */
sf->cxt = x;
}
}
static int sfdisk_deinit(struct sfdisk *sf)
{
struct fdisk_context *parent;
assert(sf);
assert(sf->cxt);
parent = fdisk_get_parent(sf->cxt);
if (parent) {
fdisk_unref_context(sf->cxt);
sf->cxt = parent;
}
fdisk_unref_context(sf->cxt);
free(sf->prompt);
memset(sf, 0, sizeof(*sf));
return 0;
}
static struct fdisk_partition *get_partition(struct fdisk_context *cxt, size_t partno)
{
struct fdisk_table *tb = NULL;
struct fdisk_partition *pa;
if (fdisk_get_partitions(cxt, &tb) != 0)
return NULL;
pa = fdisk_table_get_partition_by_partno(tb, partno);
if (pa)
fdisk_ref_partition(pa);
fdisk_unref_table(tb);
return pa;
}
static void backup_sectors(struct sfdisk *sf,
const char *tpl,
const char *name,
const char *devname,
uint64_t offset, size_t size)
{
char *fname;
int fd, devfd;
devfd = fdisk_get_devfd(sf->cxt);
assert(devfd >= 0);
xasprintf(&fname, "%s0x%08"PRIx64".bak", tpl, offset);
fd = open(fname, O_CREAT | O_WRONLY, S_IRUSR | S_IWUSR);
if (fd < 0)
goto fail;
if (lseek(devfd, (off_t) offset, SEEK_SET) == (off_t) -1) {
fdisk_warn(sf->cxt, _("cannot seek %s"), devname);
goto fail;
} else {
unsigned char *buf = xmalloc(size);
if (read_all(devfd, (char *) buf, size) != (ssize_t) size) {
fdisk_warn(sf->cxt, _("cannot read %s"), devname);
free(buf);
goto fail;
}
if (write_all(fd, buf, size) != 0) {
fdisk_warn(sf->cxt, _("cannot write %s"), fname);
free(buf);
goto fail;
}
free(buf);
}
fdisk_info(sf->cxt, _("%12s (offset %5ju, size %5ju): %s"),
name, (uintmax_t) offset, (uintmax_t) size, fname);
close(fd);
free(fname);
return;
fail:
errx(EXIT_FAILURE, _("%s: failed to create a backup"), devname);
}
static char *mk_backup_filename_tpl(const char *filename, const char *devname, const char *suffix)
{
char *tpl = NULL;
char *name, *buf = xstrdup(devname);
name = basename(buf);
if (!filename) {
const char *home = getenv ("HOME");
if (!home)
errx(EXIT_FAILURE, _("failed to create a backup file, $HOME undefined"));
xasprintf(&tpl, "%s/sfdisk-%s%s", home, name, suffix);
} else
xasprintf(&tpl, "%s-%s%s", filename, name, suffix);
free(buf);
return tpl;
}
static void backup_partition_table(struct sfdisk *sf, const char *devname)
{
const char *name;
char *tpl;
uint64_t offset = 0;
size_t size = 0;
int i = 0;
assert(sf);
if (!fdisk_has_label(sf->cxt))
return;
tpl = mk_backup_filename_tpl(sf->backup_file, devname, "-");
color_scheme_enable("header", UL_COLOR_BOLD);
fdisk_info(sf->cxt, _("Backup files:"));
color_disable();
while (fdisk_locate_disklabel(sf->cxt, i++, &name, &offset, &size) == 0 && size)
backup_sectors(sf, tpl, name, devname, offset, size);
if (!sf->quiet)
fputc('\n', stdout);
free(tpl);
}
static int move_partition_data(struct sfdisk *sf, size_t partno, struct fdisk_partition *orig_pa)
{
struct fdisk_partition *pa = get_partition(sf->cxt, partno);
char *devname = NULL, *typescript = NULL, *buf = NULL;
FILE *f = NULL;
int ok = 0, fd, backward = 0;
fdisk_sector_t nsectors, from, to, step, i;
size_t ss, step_bytes, cc;
uintmax_t src, dst;
int errsv;
assert(sf->movedata);
if (!pa)
warnx(_("failed to read new partition from device; ignoring --move-data"));
else if (!fdisk_partition_has_size(pa))
warnx(_("failed to get size of the new partition; ignoring --move-data"));
else if (!fdisk_partition_has_start(pa))
warnx(_("failed to get start of the new partition; ignoring --move-data"));
else if (!fdisk_partition_has_size(orig_pa))
warnx(_("failed to get size of the old partition; ignoring --move-data"));
else if (!fdisk_partition_has_start(orig_pa))
warnx(_("failed to get start of the old partition; ignoring --move-data"));
else if (fdisk_partition_get_start(pa) == fdisk_partition_get_start(orig_pa))
warnx(_("start of the partition has not been moved; ignoring --move-data"));
else if (fdisk_partition_get_size(orig_pa) < fdisk_partition_get_size(pa))
warnx(_("new partition is smaller than original; ignoring --move-data"));
else
ok = 1;
if (!ok)
return -EINVAL;
DBG(MISC, ul_debug("moving data"));
fd = fdisk_get_devfd(sf->cxt);
ss = fdisk_get_sector_size(sf->cxt);
nsectors = fdisk_partition_get_size(orig_pa);
from = fdisk_partition_get_start(orig_pa);
to = fdisk_partition_get_start(pa);
if ((to >= from && from + nsectors >= to) ||
(from >= to && to + nsectors >= from)) {
/* source and target overlay, check if we need to copy
* backwardly from end of the source */
DBG(MISC, ul_debug("overlay between source and target"));
backward = from < to;
DBG(MISC, ul_debug(" copy order: %s", backward ? "backward" : "forward"));
step = from > to ? from - to : to - from;
if (step > nsectors)
step = nsectors;
} else
step = nsectors;
/* make step usable for malloc() */
if (step * ss > (getpagesize() * 256U))
step = (getpagesize() * 256) / ss;
/* align the step (note that nsectors does not have to be power of 2) */
while (nsectors % step)
step--;
step_bytes = step * ss;
DBG(MISC, ul_debug(" step: %ju (%zu bytes)", (uintmax_t)step, step_bytes));
#if defined(POSIX_FADV_SEQUENTIAL) && defined(HAVE_POSIX_FADVISE)
if (!backward)
posix_fadvise(fd, from * ss, nsectors * ss, POSIX_FADV_SEQUENTIAL);
#endif
devname = fdisk_partname(fdisk_get_devname(sf->cxt), partno+1);
typescript = mk_backup_filename_tpl(sf->move_typescript, devname, ".move");
if (!sf->quiet) {
fdisk_info(sf->cxt,"");
color_scheme_enable("header", UL_COLOR_BOLD);
fdisk_info(sf->cxt, _("Data move:"));
color_disable();
fdisk_info(sf->cxt, _(" typescript file: %s"), typescript);
printf(_(" old start: %ju, new start: %ju (move %ju sectors)\n"),
(uintmax_t) from, (uintmax_t) to, (uintmax_t) nsectors);
fflush(stdout);
}
if (sf->interactive) {
int yes = 0;
fdisk_ask_yesno(sf->cxt, _("Do you want to move partition data?"), &yes);
if (!yes) {
fdisk_info(sf->cxt, _("Leaving."));
return 0;
}
}
f = fopen(typescript, "w");
if (!f)
goto fail;
/* don't translate */
fprintf(f, "# sfdisk: " PACKAGE_STRING "\n");
fprintf(f, "# Disk: %s\n", devname);
fprintf(f, "# Partition: %zu\n", partno + 1);
fprintf(f, "# Operation: move data\n");
fprintf(f, "# Original start offset (sectors/bytes): %ju/%ju\n",
(uintmax_t)from, (uintmax_t)from * ss);
fprintf(f, "# New start offset (sectors/bytes): %ju/%ju\n",
(uintmax_t)to, (uintmax_t)to * ss);
fprintf(f, "# Area size (sectors/bytes): %ju/%ju\n",
(uintmax_t)nsectors, (uintmax_t)nsectors * ss);
fprintf(f, "# Sector size: %zu\n", ss);
fprintf(f, "# Step size (in bytes): %zu\n", step_bytes);
fprintf(f, "# Steps: %ju\n", (uintmax_t)(nsectors / step));
fprintf(f, "#\n");
fprintf(f, "# <step>: <from> <to> (step offsets in bytes)\n");
src = (backward ? from + nsectors : from) * ss;
dst = (backward ? to + nsectors : to) * ss;
buf = xmalloc(step_bytes);
DBG(MISC, ul_debug(" initial: src=%ju dst=%ju", src, dst));
for (cc = 1, i = 0; i < nsectors; i += step, cc++) {
ssize_t rc;
if (backward)
src -= step_bytes, dst -= step_bytes;
DBG(MISC, ul_debug("#%05zu: src=%ju dst=%ju", cc, src, dst));
/* read source */
if (lseek(fd, src, SEEK_SET) == (off_t) -1)
goto fail;
rc = read(fd, buf, step_bytes);
if (rc < 0 || rc != (ssize_t) step_bytes)
goto fail;
/* write target */
if (lseek(fd, dst, SEEK_SET) == (off_t) -1)
goto fail;
rc = write(fd, buf, step_bytes);
if (rc < 0 || rc != (ssize_t) step_bytes)
goto fail;
fsync(fd);
/* write log */
fprintf(f, "%05zu: %12ju %12ju\n", cc, src, dst);
#if defined(POSIX_FADV_DONTNEED) && defined(HAVE_POSIX_FADVISE)
posix_fadvise(fd, src, step_bytes, POSIX_FADV_DONTNEED);
#endif
if (!backward)
src += step_bytes, dst += step_bytes;
}
fclose(f);
free(buf);
free(devname);
free(typescript);
return 0;
fail:
errsv = -errno;
warn(_("%s: failed to move data"), devname);
if (f)
fclose(f);
free(buf);
free(devname);
free(typescript);
return errsv;
}
static int write_changes(struct sfdisk *sf)
{
int rc = 0;
if (sf->noact)
fdisk_info(sf->cxt, _("The partition table is unchanged (--no-act)."));
else {
rc = fdisk_write_disklabel(sf->cxt);
if (rc == 0 && sf->movedata && sf->orig_pa)
rc = move_partition_data(sf, sf->partno, sf->orig_pa);
if (!rc) {
fdisk_info(sf->cxt, _("\nThe partition table has been altered."));
if (!sf->notell) {
/* Let's wait a little bit. It's possible that our
* system is still busy with a previous re-read
* ioctl (on sfdisk start) or with another task
* related to the write to the device.
*/
xusleep(250000);
fdisk_reread_partition_table(sf->cxt);
}
}
}
if (!rc)
rc = fdisk_deassign_device(sf->cxt,
sf->noact || sf->notell); /* no-sync */
return rc;
}
/*
* sfdisk --list [<device ..]
*/
static int command_list_partitions(struct sfdisk *sf, int argc, char **argv)
{
int fail = 0;
fdisk_enable_listonly(sf->cxt, 1);
if (argc) {
int i, ct = 0;
for (i = 0; i < argc; i++) {
if (ct)
fputs("\n\n", stdout);
if (print_device_pt(sf->cxt, argv[i], 1, sf->verify) != 0)
fail++;
ct++;
}
} else
print_all_devices_pt(sf->cxt, sf->verify);
return fail;
}
/*
* sfdisk --list-free [<device ..]
*/
static int command_list_freespace(struct sfdisk *sf, int argc, char **argv)
{
int fail = 0;
fdisk_enable_listonly(sf->cxt, 1);
if (argc) {
int i, ct = 0;
for (i = 0; i < argc; i++) {
if (ct)
fputs("\n\n", stdout);
if (print_device_freespace(sf->cxt, argv[i], 1) != 0)
fail++;
ct++;
}
} else
print_all_devices_freespace(sf->cxt);
return fail;
}
/*
* sfdisk --list-types
*/
static int command_list_types(struct sfdisk *sf)
{
const struct fdisk_parttype *t;
struct fdisk_label *lb;
const char *name;
size_t i = 0;
int codes;
assert(sf);
assert(sf->cxt);
name = sf->label ? sf->label : "dos";
lb = fdisk_get_label(sf->cxt, name);
if (!lb)
errx(EXIT_FAILURE, _("unsupported label '%s'"), name);
codes = fdisk_label_has_code_parttypes(lb);
fputs(_("Id Name\n\n"), stdout);
while ((t = fdisk_label_get_parttype(lb, i++))) {
if (codes)
printf("%2x %s\n", fdisk_parttype_get_code(t),
fdisk_parttype_get_name(t));
else
printf("%s %s\n", fdisk_parttype_get_string(t),
fdisk_parttype_get_name(t));
}
return 0;
}
static int verify_device(struct sfdisk *sf, const char *devname)
{
int rc = 1;
fdisk_enable_listonly(sf->cxt, 1);
if (fdisk_assign_device(sf->cxt, devname, 1)) {
warn(_("cannot open %s"), devname);
return 1;
}
color_scheme_enable("header", UL_COLOR_BOLD);
fdisk_info(sf->cxt, "%s:", devname);
color_disable();
if (!fdisk_has_label(sf->cxt))
fdisk_info(sf->cxt, _("unrecognized partition table type"));
else
rc = fdisk_verify_disklabel(sf->cxt);
fdisk_deassign_device(sf->cxt, 1);
return rc;
}
/*
* sfdisk --verify [<device ..]
*/
static int command_verify(struct sfdisk *sf, int argc, char **argv)
{
int nfails = 0, ct = 0;
if (argc) {
int i;
for (i = 0; i < argc; i++) {
if (i)
fdisk_info(sf->cxt, " ");
if (verify_device(sf, argv[i]) < 0)
nfails++;
}
} else {
FILE *f = NULL;
char *dev;
while ((dev = next_proc_partition(&f))) {
if (ct)
fdisk_info(sf->cxt, " ");
if (verify_device(sf, dev) < 0)
nfails++;
free(dev);
ct++;
}
}
return nfails;
}
static int get_size(const char *dev, int silent, uintmax_t *sz)
{
int fd, rc = 0;
fd = open(dev, O_RDONLY);
if (fd < 0) {
if (!silent)
warn(_("cannot open %s"), dev);
return -errno;
}
if (blkdev_get_sectors(fd, (unsigned long long *) sz) == -1) {
if (!silent)
warn(_("Cannot get size of %s"), dev);
rc = -errno;
}
close(fd);
return rc;
}
/*
* sfdisk --show-size [<device ..]
*
* (silly, but just for backward compatibility)
*/
static int command_show_size(struct sfdisk *sf __attribute__((__unused__)),
int argc, char **argv)
{
uintmax_t sz;
if (argc) {
int i;
for (i = 0; i < argc; i++) {
if (get_size(argv[i], 0, &sz) == 0)
printf("%ju\n", sz / 2);
}
} else {
FILE *f = NULL;
uintmax_t total = 0;
char *dev;
while ((dev = next_proc_partition(&f))) {
if (get_size(dev, 1, &sz) == 0) {
printf("%s: %9ju\n", dev, sz / 2);
total += sz / 2;
}
free(dev);
}
if (total)
printf(_("total: %ju blocks\n"), total);
}
return 0;
}
static int print_geom(struct sfdisk *sf, const char *devname)
{
fdisk_enable_listonly(sf->cxt, 1);
if (fdisk_assign_device(sf->cxt, devname, 1)) {
warn(_("cannot open %s"), devname);
return 1;
}
fdisk_info(sf->cxt, "%s: %ju cylinders, %ju heads, %ju sectors/track",
devname,
(uintmax_t) fdisk_get_geom_cylinders(sf->cxt),
(uintmax_t) fdisk_get_geom_heads(sf->cxt),
(uintmax_t) fdisk_get_geom_sectors(sf->cxt));
fdisk_deassign_device(sf->cxt, 1);
return 0;
}
/*
* sfdisk --show-geometry [<device ..]
*/
static int command_show_geometry(struct sfdisk *sf, int argc, char **argv)
{
int nfails = 0;
if (argc) {
int i;
for (i = 0; i < argc; i++) {
if (print_geom(sf, argv[i]) < 0)
nfails++;
}
} else {
FILE *f = NULL;
char *dev;
while ((dev = next_proc_partition(&f))) {
if (print_geom(sf, dev) < 0)
nfails++;
free(dev);
}
}
return nfails;
}
/*
* sfdisk --activate <device> [<partno> ...]
*/
static int command_activate(struct sfdisk *sf, int argc, char **argv)
{
int rc, nparts, i, listonly;
struct fdisk_partition *pa = NULL;
const char *devname = NULL;
if (argc < 1)
errx(EXIT_FAILURE, _("no disk device specified"));
devname = argv[0];
/* --activate <device> */
listonly = argc == 1;
rc = fdisk_assign_device(sf->cxt, devname, listonly);
if (rc)
err(EXIT_FAILURE, _("cannot open %s"), devname);
if (fdisk_is_label(sf->cxt, GPT)) {
/* Switch from GPT to PMBR */
sf->cxt = fdisk_new_nested_context(sf->cxt, "dos");
if (!sf->cxt)
err(EXIT_FAILURE, _("cannot switch to PMBR"));
} else if (!fdisk_is_label(sf->cxt, DOS))
errx(EXIT_FAILURE, _("toggle boot flags is supported for MBR or PMBR only"));
if (!listonly && sf->backup)
backup_partition_table(sf, devname);
nparts = fdisk_get_npartitions(sf->cxt);
for (i = 0; i < nparts; i++) {
char *data = NULL;
/* note that fdisk_get_partition() reuses the @pa pointer, you
* don't have to (re)allocate it */
if (fdisk_get_partition(sf->cxt, i, &pa) != 0)
continue;
/* sfdisk --activate list bootable partitions */
if (listonly) {
if (!fdisk_partition_is_bootable(pa))
continue;
if (fdisk_partition_to_string(pa, sf->cxt,
FDISK_FIELD_DEVICE, &data) == 0) {
printf("%s\n", data);
free(data);
}
/* deactivate all active partitions */
} else if (fdisk_partition_is_bootable(pa))
fdisk_toggle_partition_flag(sf->cxt, i, DOS_FLAG_ACTIVE);
}
/* sfdisk --activate <partno> [..] */
for (i = 1; i < argc; i++) {
int n;
if (i == 1 && strcmp(argv[1], "-") == 0)
break;
n = strtou32_or_err(argv[i], _("failed to parse partition number"));
rc = fdisk_toggle_partition_flag(sf->cxt, n - 1, DOS_FLAG_ACTIVE);
if (rc)
errx(EXIT_FAILURE,
_("%s: partition %d: failed to toggle bootable flag"),
devname, i + 1);
}
fdisk_unref_partition(pa);
if (listonly)
rc = fdisk_deassign_device(sf->cxt, 1);
else
rc = write_changes(sf);
return rc;
}
/*
* sfdisk --delete <device> [<partno> ...]
*/
static int command_delete(struct sfdisk *sf, int argc, char **argv)
{
size_t i;
const char *devname = NULL;
if (argc < 1)
errx(EXIT_FAILURE, _("no disk device specified"));
devname = argv[0];
if (fdisk_assign_device(sf->cxt, devname, 0) != 0)
err(EXIT_FAILURE, _("cannot open %s"), devname);
if (sf->backup)
backup_partition_table(sf, devname);
/* delete all */
if (argc == 1) {
size_t nparts = fdisk_get_npartitions(sf->cxt);
for (i = 0; i < nparts; i++) {
if (fdisk_is_partition_used(sf->cxt, i) &&
fdisk_delete_partition(sf->cxt, i) != 0)
errx(EXIT_FAILURE, _("%s: partition %zu: failed to delete"), devname, i + 1);
}
/* delete specified */
} else {
for (i = 1; i < (size_t) argc; i++) {
size_t n = strtou32_or_err(argv[i], _("failed to parse partition number"));
if (fdisk_delete_partition(sf->cxt, n - 1) != 0)
errx(EXIT_FAILURE, _("%s: partition %zu: failed to delete"), devname, n);
}
}
return write_changes(sf);
}
/*
* sfdisk --reorder <device>
*/
static int command_reorder(struct sfdisk *sf, int argc, char **argv)
{
const char *devname = NULL;
int rc;
if (argc)
devname = argv[0];
if (!devname)
errx(EXIT_FAILURE, _("no disk device specified"));
rc = fdisk_assign_device(sf->cxt, devname, 0); /* read-write */
if (rc)
err(EXIT_FAILURE, _("cannot open %s"), devname);
if (sf->backup)
backup_partition_table(sf, devname);
if (fdisk_reorder_partitions(sf->cxt) == 1) /* unchanged */
rc = fdisk_deassign_device(sf->cxt, 1);
else
rc = write_changes(sf);
return rc;
}
/*
* sfdisk --dump <device>
*/
static int command_dump(struct sfdisk *sf, int argc, char **argv)
{
const char *devname = NULL;
struct fdisk_script *dp;
int rc;
if (argc)
devname = argv[0];
if (!devname)
errx(EXIT_FAILURE, _("no disk device specified"));
rc = fdisk_assign_device(sf->cxt, devname, 1); /* read-only */
if (rc)
err(EXIT_FAILURE, _("cannot open %s"), devname);
if (!fdisk_has_label(sf->cxt))
errx(EXIT_FAILURE, _("%s: does not contain a recognized partition table"), devname);
dp = fdisk_new_script(sf->cxt);
if (!dp)
err(EXIT_FAILURE, _("failed to allocate dump struct"));
rc = fdisk_script_read_context(dp, NULL);
if (rc)
errx(EXIT_FAILURE, _("%s: failed to dump partition table"), devname);
if (sf->json)
fdisk_script_enable_json(dp, 1);
fdisk_script_write_file(dp, stdout);
fdisk_unref_script(dp);
fdisk_deassign_device(sf->cxt, 1); /* no-sync() */
return 0;
}
static void assign_device_partition(struct sfdisk *sf,
const char *devname,
size_t partno,
int rdonly)
{
int rc;
size_t n;
struct fdisk_label *lb = NULL;
assert(sf);
assert(devname);
/* read-only when a new <type> undefined */
rc = fdisk_assign_device(sf->cxt, devname, rdonly);
if (rc)
err(EXIT_FAILURE, _("cannot open %s"), devname);
lb = fdisk_get_label(sf->cxt, NULL);
if (!lb)
errx(EXIT_FAILURE, _("%s: no partition table found"), devname);
n = fdisk_get_npartitions(sf->cxt);
if (partno > n)
errx(EXIT_FAILURE, _("%s: partition %zu: partition table contains "
"only %zu partitions"), devname, partno, n);
if (!fdisk_is_partition_used(sf->cxt, partno - 1))
errx(EXIT_FAILURE, _("%s: partition %zu: partition is unused"),
devname, partno);
}
/*
* sfdisk --part-type <device> <partno> [<type>]
*/
static int command_parttype(struct sfdisk *sf, int argc, char **argv)
{
size_t partno;
struct fdisk_parttype *type = NULL;
struct fdisk_label *lb;
const char *devname = NULL, *typestr = 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)
typestr = argv[2];
else if (argc > 3)
errx(EXIT_FAILURE, _("unexpected arguments"));
/* read-only when a new <type> undefined */
assign_device_partition(sf, devname, partno, !typestr);
lb = fdisk_get_label(sf->cxt, NULL);
/* print partition type */
if (!typestr) {
const struct fdisk_parttype *t = NULL;
struct fdisk_partition *pa = NULL;
if (fdisk_get_partition(sf->cxt, partno - 1, &pa) == 0)
t = fdisk_partition_get_type(pa);
if (!t)
errx(EXIT_FAILURE, _("%s: partition %zu: failed to get partition type"),
devname, partno);
if (fdisk_label_has_code_parttypes(lb))
printf("%2x\n", fdisk_parttype_get_code(t));
else
printf("%s\n", fdisk_parttype_get_string(t));
fdisk_unref_partition(pa);
fdisk_deassign_device(sf->cxt, 1);
return 0;
}
if (sf->backup)
backup_partition_table(sf, devname);
/* parse <type> and apply to PT */
type = fdisk_label_parse_parttype(lb, typestr);
if (!type)
errx(EXIT_FAILURE, _("failed to parse %s partition type '%s'"),
fdisk_label_get_name(lb), typestr);
else if (fdisk_set_partition_type(sf->cxt, partno - 1, type) != 0)
errx(EXIT_FAILURE, _("%s: partition %zu: failed to set partition type"),
devname, partno);
fdisk_unref_parttype(type);
return write_changes(sf);
}
/*
* sfdisk --part-uuid <device> <partno> [<uuid>]
*/
static int command_partuuid(struct sfdisk *sf, int argc, char **argv)
{
size_t partno;
struct fdisk_partition *pa = NULL;
const char *devname = NULL, *uuid = 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)
uuid = argv[2];
else if (argc > 3)
errx(EXIT_FAILURE, _("unexpected arguments"));
/* read-only if uuid not given */
assign_device_partition(sf, devname, partno, !uuid);
/* print partition uuid */
if (!uuid) {
const char *str = NULL;
if (fdisk_get_partition(sf->cxt, partno - 1, &pa) == 0)
str = fdisk_partition_get_uuid(pa);
if (!str)
errx(EXIT_FAILURE, _("%s: partition %zu: failed to get partition UUID"),
devname, partno);
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_uuid(pa, uuid) != 0 ||
fdisk_set_partition(sf->cxt, partno - 1, pa) != 0)
errx(EXIT_FAILURE, _("%s: partition %zu: failed to set partition UUID"),
devname, partno);
fdisk_unref_partition(pa);
return write_changes(sf);
}
/*
* sfdisk --part-label <device> <partno> [<label>]
*/
static int command_partlabel(struct sfdisk *sf, int argc, char **argv)
{
size_t partno;
struct fdisk_partition *pa = NULL;
const char *devname = NULL, *name = 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)
name = argv[2];
else if (argc > 3)
errx(EXIT_FAILURE, _("unexpected arguments"));
/* read-only if name not given */
assign_device_partition(sf, devname, partno, !name);
/* print partition name */
if (!name) {
const char *str = NULL;
if (fdisk_get_partition(sf->cxt, partno - 1, &pa) == 0)
str = fdisk_partition_get_name(pa);
if (!str)
errx(EXIT_FAILURE, _("%s: partition %zu: failed to get partition name"),
devname, partno);
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_name(pa, name) != 0 ||
fdisk_set_partition(sf->cxt, partno - 1, pa) != 0)
errx(EXIT_FAILURE, _("%s: partition %zu: failed to set partition name"),
devname, partno);
fdisk_unref_partition(pa);
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, _("unexpected arguments"));
/* read-only if name not given */
assign_device_partition(sf, devname, partno, !attrs);
/* print partition name */
if (!attrs) {
const char *str = NULL;
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;
char *data;
assert(sf);
if (sf->quiet)
return;
if (fdisk_get_partition(sf->cxt, n, &pa) != 0)
return;
fdisk_partition_to_string(pa, sf->cxt, FDISK_FIELD_DEVICE, &data);
printf("%12s : ", data);
fdisk_partition_to_string(pa, sf->cxt, FDISK_FIELD_START, &data);
printf("%12s ", data);
fdisk_partition_to_string(pa, sf->cxt, FDISK_FIELD_END, &data);
printf("%12s ", data);
fdisk_partition_to_string(pa, sf->cxt, FDISK_FIELD_SIZE, &data);
printf("(%s) ", data);
fdisk_partition_to_string(pa, sf->cxt, FDISK_FIELD_TYPE, &data);
printf("%s\n", data);
fdisk_unref_partition(pa);
}
static void command_fdisk_help(void)
{
fputs(_("\nHelp:\n"), stdout);
fputc('\n', stdout);
color_scheme_enable("help-title", UL_COLOR_BOLD);
fputs(_(" Commands:\n"), stdout);
color_disable();
fputs(_(" write write table to disk and exit\n"), stdout);
fputs(_(" quit show new situation and wait for user's feedback before write\n"), stdout);
fputs(_(" abort exit sfdisk shell\n"), stdout);
fputs(_(" print display the partition table\n"), stdout);
fputs(_(" help show this help text\n"), stdout);
fputc('\n', stdout);
fputs(_(" Ctrl-D the same as 'quit'\n"), stdout);
fputc('\n', stdout);
color_scheme_enable("help-title", UL_COLOR_BOLD);
fputs(_(" Input format:\n"), stdout);
color_disable();
fputs(_(" <start>, <size>, <type>, <bootable>\n"), stdout);
fputc('\n', stdout);
fputs(_(" <start> Beginning of the partition in sectors, or bytes if\n"
" specified in the format <number>{K,M,G,T,P,E,Z,Y}.\n"
" The default is the first free space.\n"), stdout);
fputc('\n', stdout);
fputs(_(" <size> Size of the partition in sectors, or bytes if\n"
" specified in the format <number>{K,M,G,T,P,E,Z,Y}.\n"
" The default is all available space.\n"), stdout);
fputc('\n', stdout);
fputs(_(" <type> The partition type. Default is a Linux data partition.\n"), stdout);
fputs(_(" MBR: hex or L,S,E,X,U,R,V shortcuts.\n"), stdout);
fputs(_(" GPT: UUID or L,S,H,U,R,V shortcuts.\n"), stdout);
fputc('\n', stdout);
fputs(_(" <bootable> Use '*' to mark an MBR partition as bootable.\n"), stdout);
fputc('\n', stdout);
color_scheme_enable("help-title", UL_COLOR_BOLD);
fputs(_(" Example:\n"), stdout);
color_disable();
fputs(_(" , 4G Creates a 4GiB partition at default start offset.\n"), stdout);
fputc('\n', stdout);
}
enum {
SFDISK_DONE_NONE = 0,
SFDISK_DONE_EOF,
SFDISK_DONE_ABORT,
SFDISK_DONE_WRITE,
SFDISK_DONE_ASK
};
/* returns: 0 on success, <0 on error, 1 successfully stop sfdisk */
static int loop_control_commands(struct sfdisk *sf,
struct fdisk_script *dp,
char *buf)
{
const char *p = skip_blank(buf);
int rc = SFDISK_DONE_NONE;
if (strcmp(p, "print") == 0)
list_disklabel(sf->cxt);
else if (strcmp(p, "help") == 0)
command_fdisk_help();
else if (strcmp(p, "quit") == 0)
rc = SFDISK_DONE_ASK;
else if (strcmp(p, "write") == 0)
rc = SFDISK_DONE_WRITE;
else if (strcmp(p, "abort") == 0)
rc = SFDISK_DONE_ABORT;
else {
if (sf->interactive)
fdisk_warnx(sf->cxt, _("unsupported command"));
else {
fdisk_warnx(sf->cxt, _("line %d: unsupported command"),
fdisk_script_get_nlines(dp));
rc = -EINVAL;
}
}
return rc;
}
static int has_container(struct sfdisk *sf)
{
size_t i, nparts;
struct fdisk_partition *pa = NULL;
if (sf->container)
return sf->container;
nparts = fdisk_get_npartitions(sf->cxt);
for (i = 0; i < nparts; i++) {
if (fdisk_get_partition(sf->cxt, i, &pa) != 0)
continue;
if (fdisk_partition_is_container(pa)) {
sf->container = 1;
break;
}
}
fdisk_unref_partition(pa);
return sf->container;
}
static size_t last_pt_partno(struct sfdisk *sf)
{
size_t i, nparts, partno = 0;
struct fdisk_partition *pa = NULL;
nparts = fdisk_get_npartitions(sf->cxt);
for (i = 0; i < nparts; i++) {
size_t x;
if (fdisk_get_partition(sf->cxt, i, &pa) != 0 ||
!fdisk_partition_is_used(pa))
continue;
x = fdisk_partition_get_partno(pa);
if (x > partno)
partno = x;
}
fdisk_unref_partition(pa);
return partno;
}
#ifdef HAVE_LIBREADLINE
static char *sfdisk_fgets(struct fdisk_script *dp,
char *buf, size_t bufsz, FILE *f)
{
struct sfdisk *sf = (struct sfdisk *) fdisk_script_get_userdata(dp);
assert(dp);
assert(buf);
assert(bufsz > 2);
if (sf->interactive) {
char *p = readline(sf->prompt);
size_t len;
if (!p)
return NULL;
len = strlen(p);
if (len > bufsz - 2)
len = bufsz - 2;
memcpy(buf, p, len);
buf[len] = '\n'; /* append \n to be compatible with libc fgetc() */
buf[len + 1] = '\0';
free(p);
fflush(stdout);
return buf;
}
return fgets(buf, bufsz, f);
}
#endif
static int ignore_partition(struct fdisk_partition *pa)
{
/* incomplete partition setting */
if (!fdisk_partition_has_start(pa) && !fdisk_partition_start_is_default(pa))
return 1;
if (!fdisk_partition_has_size(pa) && !fdisk_partition_end_is_default(pa))
return 1;
/* probably dump from old sfdisk with start=0 size=0 */
if (fdisk_partition_has_start(pa) && fdisk_partition_get_start(pa) == 0 &&
fdisk_partition_has_size(pa) && fdisk_partition_get_size(pa) == 0)
return 1;
return 0;
}
static void follow_wipe_mode(struct sfdisk *sf)
{
int dowipe = sf->wipemode == WIPEMODE_ALWAYS ? 1 : 0;
if (sf->interactive && sf->wipemode == WIPEMODE_AUTO)
dowipe = 1; /* do it in interactive mode */
if (fdisk_is_ptcollision(sf->cxt) && sf->wipemode != WIPEMODE_NEVER)
dowipe = 1; /* always wipe old PT */
fdisk_enable_wipe(sf->cxt, dowipe);
if (sf->quiet)
return;
if (dowipe) {
if (!fdisk_is_ptcollision(sf->cxt)) {
fdisk_info(sf->cxt, _("The old %s signature will be removed by a write command."),
fdisk_get_collision(sf->cxt));
fputc('\n', stderr);
}
} else {
fdisk_warnx(sf->cxt, _(
"The old %s signature may remain on the device. "
"It is recommended to wipe the device with wipefs(8) or "
"sfdisk --wipe, in order to avoid possible collisions."),
fdisk_get_collision(sf->cxt));
fputc('\n', stderr);
}
}
static int wipe_partition(struct sfdisk *sf, size_t partno)
{
int rc, yes = 0;
char *fstype = NULL;
struct fdisk_partition *tmp = NULL;
DBG(MISC, ul_debug("checking for signature"));
rc = fdisk_get_partition(sf->cxt, partno, &tmp);
if (rc)
goto done;
rc = fdisk_partition_to_string(tmp, sf->cxt, FDISK_FIELD_FSTYPE, &fstype);
if (rc || fstype == NULL)
goto done;
fdisk_warnx(sf->cxt, _("Partition #%zu contains a %s signature."), partno + 1, fstype);
if (sf->pwipemode == WIPEMODE_AUTO && isatty(STDIN_FILENO))
fdisk_ask_yesno(sf->cxt, _("Do you want to remove the signature?"), &yes);
else if (sf->pwipemode == WIPEMODE_ALWAYS)
yes = 1;
if (yes) {
fdisk_info(sf->cxt, _("The signature will be removed by a write command."));
rc = fdisk_wipe_partition(sf->cxt, partno, TRUE);
}
done:
fdisk_unref_partition(tmp);
free(fstype);
DBG(MISC, ul_debug("partition wipe check end [rc=%d]", rc));
return rc;
}
static void refresh_prompt_buffer(struct sfdisk *sf, const char *devname,
size_t next_partno, int created)
{
if (created) {
char *partname = fdisk_partname(devname, next_partno + 1);
if (!partname)
err(EXIT_FAILURE, _("failed to allocate partition name"));
if (!sf->prompt || !startswith(sf->prompt, partname)) {
free(sf->prompt);
xasprintf(&sf->prompt,"%s: ", partname);
}
free(partname);
} else if (!sf->prompt || !startswith(sf->prompt, SFDISK_PROMPT)) {
free(sf->prompt);
sf->prompt = xstrdup(SFDISK_PROMPT);
}
}
/*
* sfdisk <device> [[-N] <partno>]
*
* Note that the option -N is there for backward compatibility only.
*/
static int command_fdisk(struct sfdisk *sf, int argc, char **argv)
{
int rc = 0, partno = sf->partno, created = 0, unused = 0;
struct fdisk_script *dp;
struct fdisk_table *tb = NULL;
const char *devname = NULL, *label;
char buf[BUFSIZ];
size_t next_partno = (size_t) -1;
if (argc)
devname = argv[0];
if (partno < 0 && argc > 1)
partno = strtou32_or_err(argv[1],
_("failed to parse partition number"));
if (!devname)
errx(EXIT_FAILURE, _("no disk device specified"));
rc = fdisk_assign_device(sf->cxt, devname, 0);
if (rc)
err(EXIT_FAILURE, _("cannot open %s"), devname);
dp = fdisk_new_script(sf->cxt);
if (!dp)
err(EXIT_FAILURE, _("failed to allocate script handler"));
fdisk_set_script(sf->cxt, dp);
#ifdef HAVE_LIBREADLINE
fdisk_script_set_fgets(dp, sfdisk_fgets);
#endif
fdisk_script_set_userdata(dp, (void *) sf);
/*
* Don't create a new disklabel when [-N] <partno> specified. In this
* case reuse already specified disklabel. Let's check that the disk
* really contains the partition.
*/
if (partno >= 0) {
size_t n;
if (!fdisk_has_label(sf->cxt))
errx(EXIT_FAILURE, _("%s: cannot modify partition %d: "
"no partition table was found"),
devname, partno + 1);
n = fdisk_get_npartitions(sf->cxt);
if ((size_t) partno > n)
errx(EXIT_FAILURE, _("%s: cannot modify partition %d: "
"partition table contains only %zu "
"partitions"),
devname, partno + 1, n);
if (!fdisk_is_partition_used(sf->cxt, partno)) {
fdisk_warnx(sf->cxt, _("warning: %s: partition %d is not defined yet"),
devname, partno + 1);
unused = 1;
}
created = 1;
next_partno = partno;
if (sf->movedata)
sf->orig_pa = get_partition(sf->cxt, partno);
}
if (sf->append) {
created = 1;
next_partno = last_pt_partno(sf) + 1;
}
if (!sf->quiet && sf->interactive) {
color_scheme_enable("welcome", UL_COLOR_GREEN);
fdisk_info(sf->cxt, _("\nWelcome to sfdisk (%s)."), PACKAGE_STRING);
color_disable();
fdisk_info(sf->cxt, _("Changes will remain in memory only, until you decide to write them.\n"
"Be careful before using the write command.\n"));
}
if (!sf->noact && !sf->noreread) {
if (!sf->quiet)
fputs(_("Checking that no-one is using this disk right now ..."), stdout);
if (fdisk_device_is_used(sf->cxt)) {
if (!sf->quiet)
fputs(_(" FAILED\n\n"), stdout);
fdisk_warnx(sf->cxt, _(
"This disk is currently in use - repartitioning is probably a bad idea.\n"
"Umount all file systems, and swapoff all swap partitions on this disk.\n"
"Use the --no-reread flag to suppress this check.\n"));
if (!sf->force)
errx(EXIT_FAILURE, _("Use the --force flag to overrule all checks."));
} else if (!sf->quiet)
fputs(_(" OK\n\n"), stdout);
}
if (fdisk_get_collision(sf->cxt))
follow_wipe_mode(sf);
if (sf->backup)
backup_partition_table(sf, devname);
if (!sf->quiet) {
list_disk_geometry(sf->cxt);
if (fdisk_has_label(sf->cxt)) {
fdisk_info(sf->cxt, _("\nOld situation:"));
list_disklabel(sf->cxt);
}
}
if (sf->label)
label = sf->label;
else if (fdisk_has_label(sf->cxt))
label = fdisk_label_get_name(fdisk_get_label(sf->cxt, NULL));
else
label = "dos"; /* just for backward compatibility */
fdisk_script_set_header(dp, "label", label);
if (!sf->quiet && sf->interactive) {
if (!fdisk_has_label(sf->cxt) && !sf->label)
fdisk_info(sf->cxt,
_("\nsfdisk is going to create a new '%s' disk label.\n"
"Use 'label: <name>' before you define a first partition\n"
"to override the default."), label);
fdisk_info(sf->cxt, _("\nType 'help' to get more information.\n"));
} else if (!sf->quiet)
fputc('\n', stdout);
tb = fdisk_script_get_table(dp);
assert(tb);
do {
size_t nparts;
DBG(PARSE, ul_debug("<---next-line--->"));
if (next_partno == (size_t) -1)
next_partno = fdisk_table_get_nents(tb);
if (created
&& partno < 0
&& next_partno == fdisk_get_npartitions(sf->cxt)
&& !has_container(sf)) {
fdisk_info(sf->cxt, _("All partitions used."));
rc = SFDISK_DONE_ASK;
break;
}
refresh_prompt_buffer(sf, devname, next_partno, created);
if (sf->prompt && (sf->interactive || !sf->quiet)) {
#ifndef HAVE_LIBREADLINE
fputs(sf->prompt, stdout);
#else
if (!sf->interactive)
fputs(sf->prompt, stdout);
#endif
}
rc = fdisk_script_read_line(dp, stdin, buf, sizeof(buf));
if (rc < 0) {
DBG(PARSE, ul_debug("script parsing failed, trying sfdisk specific commands"));
buf[sizeof(buf) - 1] = '\0';
rc = loop_control_commands(sf, dp, buf);
if (rc)
break;
continue;
} else if (rc == 1) {
rc = SFDISK_DONE_EOF;
if (!sf->quiet)
fputs(_("Done.\n"), stdout);
break;
}
nparts = fdisk_table_get_nents(tb);
if (nparts) {
size_t cur_partno;
struct fdisk_partition *pa = fdisk_table_get_partition(tb, nparts - 1);
assert(pa);
if (ignore_partition(pa)) {
fdisk_info(sf->cxt, _("Ignoring partition."));
next_partno++;
continue;
}
if (!created) { /* create a new disklabel */
rc = fdisk_apply_script_headers(sf->cxt, dp);
created = !rc;
if (rc)
fdisk_warnx(sf->cxt, _(
"Failed to apply script headers, "
"disk label not created."));
if (rc == 0 && fdisk_get_collision(sf->cxt))
follow_wipe_mode(sf);
}
if (!rc && partno >= 0) { /* -N <partno>, modify partition */
rc = fdisk_set_partition(sf->cxt, partno, pa);
rc = rc == 0 ? SFDISK_DONE_ASK : SFDISK_DONE_ABORT;
break;
} else if (!rc) { /* add partition */
if (!sf->interactive && !sf->quiet &&
(!sf->prompt || startswith(sf->prompt, SFDISK_PROMPT))) {
refresh_prompt_buffer(sf, devname, next_partno, created);
fputs(sf->prompt, stdout);
}
rc = fdisk_add_partition(sf->cxt, pa, &cur_partno);
if (rc) {
errno = -rc;
fdisk_warn(sf->cxt, _("Failed to add #%d partition"), next_partno + 1);
}
}
/* wipe partition on success
*
* Note that unused=1 means -N <partno> for unused,
* otherwise we wipe only newly created partitions.
*/
if (rc == 0 && (unused || partno < 0)) {
rc = wipe_partition(sf, unused ? (size_t) partno : cur_partno);
if (rc)
errno = -rc;
}
if (!rc) {
/* success print result */
if (sf->interactive)
sfdisk_print_partition(sf, cur_partno);
next_partno = cur_partno + 1;
} else if (pa) /* error, drop partition from script */
fdisk_table_remove_partition(tb, pa);
} else
fdisk_info(sf->cxt, _("Script header accepted."));
if (rc && !sf->interactive) {
rc = SFDISK_DONE_ABORT;
break;
}
} while (1);
/* create empty disk label if label, but no partition specified */
if ((rc == SFDISK_DONE_EOF || rc == SFDISK_DONE_WRITE) && created == 0
&& fdisk_script_has_force_label(dp) == 1
&& fdisk_table_get_nents(tb) == 0
&& fdisk_script_get_header(dp, "label")) {
int xrc = fdisk_apply_script_headers(sf->cxt, dp);
created = !xrc;
if (xrc) {
fdisk_warnx(sf->cxt, _(
"Failed to apply script headers, "
"disk label not created."));
rc = SFDISK_DONE_ABORT;
}
}
if (!sf->quiet && rc != SFDISK_DONE_ABORT) {
fdisk_info(sf->cxt, _("\nNew situation:"));
list_disk_identifier(sf->cxt);
list_disklabel(sf->cxt);
}
switch (rc) {
case SFDISK_DONE_ASK:
case SFDISK_DONE_EOF:
if (sf->interactive) {
int yes = 0;
fdisk_ask_yesno(sf->cxt, _("Do you want to write this to disk?"), &yes);
if (!yes) {
fdisk_info(sf->cxt, _("Leaving."));
rc = 0;
break;
}
}
/* fallthrough */
case SFDISK_DONE_WRITE:
rc = write_changes(sf);
break;
case SFDISK_DONE_ABORT:
default: /* rc < 0 on error */
fdisk_info(sf->cxt, _("Leaving.\n"));
break;
}
fdisk_unref_script(dp);
return rc;
}
static void __attribute__((__noreturn__)) usage(void)
{
FILE *out = stdout;
fputs(USAGE_HEADER, out);
fprintf(out,
_(" %1$s [options] <dev> [[-N] <part>]\n"
" %1$s [options] <command>\n"), program_invocation_short_name);
fputs(USAGE_SEPARATOR, out);
fputs(_("Display or manipulate a disk partition table.\n"), out);
fputs(USAGE_COMMANDS, out);
fputs(_(" -A, --activate <dev> [<part> ...] list or set bootable (P)MBR partitions\n"), out);
fputs(_(" -d, --dump <dev> dump partition table (usable for later input)\n"), out);
fputs(_(" -J, --json <dev> dump partition table in JSON format\n"), out);
fputs(_(" -g, --show-geometry [<dev> ...] list geometry of all or specified devices\n"), out);
fputs(_(" -l, --list [<dev> ...] list partitions of each device\n"), out);
fputs(_(" -F, --list-free [<dev> ...] list unpartitioned free areas of each device\n"), out);
fputs(_(" -r, --reorder <dev> fix partitions order (by start offset)\n"), out);
fputs(_(" -s, --show-size [<dev> ...] list sizes of all or specified devices\n"), out);
fputs(_(" -T, --list-types print the recognized types (see -X)\n"), out);
fputs(_(" -V, --verify [<dev> ...] test whether partitions seem correct\n"), out);
fputs(_(" --delete <dev> [<part> ...] delete all or specified partitions\n"), out);
fputs(USAGE_SEPARATOR, 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);
fputs(_(" <part> partition number\n"), out);
fputs(_(" <type> partition type, GUID for GPT, hex for MBR\n"), out);
fputs(USAGE_OPTIONS, out);
fputs(_(" -a, --append append partitions to existing partition table\n"), out);
fputs(_(" -b, --backup backup partition table sectors (see -O)\n"), out);
fputs(_(" --bytes print SIZE in bytes rather than in human readable format\n"), out);
fputs(_(" --move-data[=<typescript>] move partition data after relocation (requires -N)\n"), out);
fputs(_(" -f, --force disable all consistency checking\n"), out);
fputs(_(" --color[=<when>] colorize output (auto, always or never)\n"), out);
fprintf(out,
" %s\n", USAGE_COLORS_DEFAULT);
fputs(_(" -N, --partno <num> specify partition number\n"), out);
fputs(_(" -n, --no-act do everything except write to device\n"), out);
fputs(_(" --no-reread do not check whether the device is in use\n"), out);
fputs(_(" --no-tell-kernel do not tell kernel about changes\n"), out);
fputs(_(" -O, --backup-file <path> override default backup file name\n"), out);
fputs(_(" -o, --output <list> output columns\n"), out);
fputs(_(" -q, --quiet suppress extra info messages\n"), out);
fputs(_(" -w, --wipe <mode> wipe signatures (auto, always or never)\n"), out);
fputs(_(" -W, --wipe-partitions <mode> wipe signatures from new partitions (auto, always or never)\n"), out);
fputs(_(" -X, --label <name> specify label type (dos, gpt, ...)\n"), out);
fputs(_(" -Y, --label-nested <name> specify nested label type (dos, bsd)\n"), out);
fputs(USAGE_SEPARATOR, out);
fputs(_(" -G, --show-pt-geometry deprecated, alias to --show-geometry\n"), out);
fputs(_(" -L, --Linux deprecated, only for backward compatibility\n"), out);
fputs(_(" -u, --unit S deprecated, only sector unit is supported\n"), out);
fputs(USAGE_SEPARATOR, out);
printf( " -h, --help %s\n", USAGE_OPTSTR_HELP);
printf( " -v, --version %s\n", USAGE_OPTSTR_VERSION);
list_available_columns(out);
printf(USAGE_MAN_TAIL("sfdisk(8)"));
exit(EXIT_SUCCESS);
}
int main(int argc, char *argv[])
{
const char *outarg = NULL;
int rc = -EINVAL, c, longidx = -1, bytes = 0;
int colormode = UL_COLORMODE_UNDEF;
struct sfdisk _sf = {
.partno = -1,
.wipemode = WIPEMODE_AUTO,
.pwipemode = WIPEMODE_AUTO,
.interactive = isatty(STDIN_FILENO) ? 1 : 0,
}, *sf = &_sf;
enum {
OPT_CHANGE_ID = CHAR_MAX + 1,
OPT_PRINT_ID,
OPT_ID,
OPT_NOREREAD,
OPT_PARTUUID,
OPT_PARTLABEL,
OPT_PARTTYPE,
OPT_PARTATTRS,
OPT_BYTES,
OPT_COLOR,
OPT_MOVEDATA,
OPT_DELETE,
OPT_NOTELL
};
static const struct option longopts[] = {
{ "activate",no_argument, NULL, 'A' },
{ "append", no_argument, NULL, 'a' },
{ "backup", no_argument, NULL, 'b' },
{ "backup-file", required_argument, NULL, 'O' },
{ "bytes", no_argument, NULL, OPT_BYTES },
{ "color", optional_argument, NULL, OPT_COLOR },
{ "delete", no_argument, NULL, OPT_DELETE },
{ "dump", no_argument, NULL, 'd' },
{ "help", no_argument, NULL, 'h' },
{ "force", no_argument, NULL, 'f' },
{ "json", no_argument, NULL, 'J' },
{ "label", required_argument, NULL, 'X' },
{ "label-nested", required_argument, NULL, 'Y' },
{ "list", no_argument, NULL, 'l' },
{ "list-free", no_argument, NULL, 'F' },
{ "list-types", no_argument, NULL, 'T' },
{ "no-act", no_argument, NULL, 'n' },
{ "no-reread", no_argument, NULL, OPT_NOREREAD },
{ "no-tell-kernel", no_argument, NULL, OPT_NOTELL },
{ "move-data", optional_argument, NULL, OPT_MOVEDATA },
{ "output", required_argument, NULL, 'o' },
{ "partno", required_argument, NULL, 'N' },
{ "reorder", no_argument, NULL, 'r' },
{ "show-geometry", no_argument, NULL, 'g' },
{ "quiet", no_argument, NULL, 'q' },
{ "verify", no_argument, NULL, 'V' },
{ "version", no_argument, NULL, 'v' },
{ "wipe", required_argument, NULL, 'w' },
{ "wipe-partitions", required_argument, NULL, 'W' },
{ "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 },
{ "show-pt-geometry", no_argument, NULL, 'G' }, /* deprecated */
{ "unit", required_argument, NULL, 'u' }, /* deprecated */
{ "Linux", no_argument, NULL, 'L' }, /* deprecated */
{ "show-size", no_argument, NULL, 's' }, /* deprecated */
{ "change-id",no_argument, NULL, OPT_CHANGE_ID }, /* deprecated */
{ "id", no_argument, NULL, 'c' }, /* deprecated */
{ "print-id",no_argument, NULL, OPT_PRINT_ID }, /* deprecated */
{ NULL, 0, NULL, 0 },
};
static const ul_excl_t excl[] = { /* rows and cols in ASCII order */
{ 's','u'}, /* --show-size --unit */
{ 0 }
};
int excl_st[ARRAY_SIZE(excl)] = UL_EXCL_STATUS_INIT;
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
atexit(close_stdout);
while ((c = getopt_long(argc, argv, "aAbcdfFgGhJlLo:O:nN:qrsTu:vVX:Y:w:W:",
longopts, &longidx)) != -1) {
err_exclusive_options(c, longopts, excl, excl_st);
switch(c) {
case 'A':
sf->act = ACT_ACTIVATE;
break;
case 'a':
sf->append = 1;
break;
case 'b':
sf->backup = 1;
break;
case OPT_CHANGE_ID:
case OPT_PRINT_ID:
case OPT_ID:
warnx(_("%s is deprecated in favour of --part-type"),
longopts[longidx].name);
sf->act = ACT_PARTTYPE;
break;
case 'c':
warnx(_("--id is deprecated in favour of --part-type"));
sf->act = ACT_PARTTYPE;
break;
case 'J':
sf->json = 1;
/* fallthrough */
case 'd':
sf->act = ACT_DUMP;
break;
case 'F':
sf->act = ACT_LIST_FREE;
break;
case 'f':
sf->force = 1;
break;
case 'G':
warnx(_("--show-pt-geometry is no more implemented. Using --show-geometry."));
/* fallthrough */
case 'g':
sf->act = ACT_SHOW_GEOM;
break;
case 'h':
usage();
break;
case 'l':
sf->act = ACT_LIST;
break;
case 'L':
warnx(_("--Linux option is unnecessary and deprecated"));
break;
case 'o':
outarg = optarg;
break;
case 'O':
sf->backup = 1;
sf->backup_file = optarg;
break;
case 'n':
sf->noact = 1;
break;
case 'N':
sf->partno = strtou32_or_err(optarg, _("failed to parse partition number")) - 1;
break;
case 'q':
sf->quiet = 1;
break;
case 'r':
sf->act = ACT_REORDER;
break;
case 's':
sf->act = ACT_SHOW_SIZE;
break;
case 'T':
sf->act = ACT_LIST_TYPES;
break;
case 'u':
if (*optarg != 'S')
errx(EXIT_FAILURE, _("unsupported unit '%c'"), *optarg);
break;
case 'v':
printf(_("%s from %s\n"), program_invocation_short_name,
PACKAGE_STRING);
return EXIT_SUCCESS;
case 'V':
sf->verify = 1;
break;
case 'w':
sf->wipemode = wipemode_from_string(optarg);
if (sf->wipemode < 0)
errx(EXIT_FAILURE, _("unsupported wipe mode"));
break;
case 'W':
sf->pwipemode = wipemode_from_string(optarg);
if (sf->pwipemode < 0)
errx(EXIT_FAILURE, _("unsupported wipe mode"));
break;
case 'X':
sf->label = optarg;
break;
case 'Y':
sf->label_nested = optarg;
break;
case OPT_PARTUUID:
sf->act = ACT_PARTUUID;
break;
case OPT_PARTTYPE:
sf->act = ACT_PARTTYPE;
break;
case OPT_PARTLABEL:
sf->act = ACT_PARTLABEL;
break;
case OPT_PARTATTRS:
sf->act = ACT_PARTATTRS;
break;
case OPT_NOREREAD:
sf->noreread = 1;
break;
case OPT_BYTES:
bytes = 1;
break;
case OPT_COLOR:
colormode = UL_COLORMODE_AUTO;
if (optarg)
colormode = colormode_or_err(optarg,
_("unsupported color mode"));
break;
case OPT_MOVEDATA:
sf->movedata = 1;
sf->move_typescript = optarg;
break;
case OPT_DELETE:
sf->act = ACT_DELETE;
break;
case OPT_NOTELL:
sf->notell = 1;
break;
default:
errtryhelp(EXIT_FAILURE);
}
}
colors_init(colormode, "sfdisk");
sfdisk_init(sf);
if (bytes)
fdisk_set_size_unit(sf->cxt, FDISK_SIZEUNIT_BYTES);
if (outarg)
init_fields(NULL, outarg, NULL);
if (sf->verify && !sf->act)
sf->act = ACT_VERIFY; /* --verify make be used with --list too */
else if (!sf->act)
sf->act = ACT_FDISK; /* default */
if (sf->movedata && !(sf->act == ACT_FDISK && sf->partno >= 0))
errx(EXIT_FAILURE, _("--movedata requires -N"));
switch (sf->act) {
case ACT_ACTIVATE:
rc = command_activate(sf, argc - optind, argv + optind);
break;
case ACT_DELETE:
rc = command_delete(sf, argc - optind, argv + optind);
break;
case ACT_LIST:
rc = command_list_partitions(sf, argc - optind, argv + optind);
break;
case ACT_LIST_TYPES:
rc = command_list_types(sf);
break;
case ACT_LIST_FREE:
rc = command_list_freespace(sf, argc - optind, argv + optind);
break;
case ACT_FDISK:
rc = command_fdisk(sf, argc - optind, argv + optind);
break;
case ACT_DUMP:
rc = command_dump(sf, argc - optind, argv + optind);
break;
case ACT_SHOW_SIZE:
rc = command_show_size(sf, argc - optind, argv + optind);
break;
case ACT_SHOW_GEOM:
rc = command_show_geometry(sf, argc - optind, argv + optind);
break;
case ACT_VERIFY:
rc = command_verify(sf, argc - optind, argv + optind);
break;
case ACT_PARTTYPE:
rc = command_parttype(sf, argc - optind, argv + optind);
break;
case ACT_PARTUUID:
rc = command_partuuid(sf, argc - optind, argv + optind);
break;
case ACT_PARTLABEL:
rc = command_partlabel(sf, argc - optind, argv + optind);
break;
case ACT_PARTATTRS:
rc = command_partattrs(sf, argc - optind, argv + optind);
break;
case ACT_REORDER:
rc = command_reorder(sf, argc - optind, argv + optind);
break;
}
sfdisk_deinit(sf);
DBG(MISC, ul_debug("bye! [rc=%d]", rc));
return rc == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}