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util-linux/disk-utils/fdisk.c

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/*
* Copyright (C) 1992 A. V. Le Blanc (LeBlanc@mcc.ac.uk)
* Copyright (C) 2012 Davidlohr Bueso <dave@gnu.org>
*
* Copyright (C) 2007-2013 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.
*/
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <ctype.h>
#include <errno.h>
#include <getopt.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <time.h>
#include <limits.h>
#include <signal.h>
#include <poll.h>
#include <libsmartcols.h>
#ifdef HAVE_LIBREADLINE
# define _FUNCTION_DEF
# include <readline/readline.h>
#endif
#include "c.h"
#include "xalloc.h"
#include "all-io.h"
#include "nls.h"
#include "rpmatch.h"
#include "blkdev.h"
#include "mbsalign.h"
#include "pathnames.h"
#include "canonicalize.h"
#include "strutils.h"
#include "closestream.h"
#include "pager.h"
#include "fdisk.h"
#include "pt-sun.h" /* to toggle flags */
#ifdef HAVE_LINUX_COMPILER_H
# include <linux/compiler.h>
#endif
#ifdef HAVE_LINUX_BLKPG_H
# include <linux/blkpg.h>
#endif
int pwipemode = WIPEMODE_AUTO;
int device_is_used;
int is_interactive;
struct fdisk_table *original_layout;
static int wipemode = WIPEMODE_AUTO;
/*
* fdisk debug stuff (see fdisk.h and include/debug.h)
*/
UL_DEBUG_DEFINE_MASK(fdisk);
UL_DEBUG_DEFINE_MASKNAMES(fdisk) = UL_DEBUG_EMPTY_MASKNAMES;
static void fdiskprog_init_debug(void)
{
__UL_INIT_DEBUG_FROM_ENV(fdisk, FDISKPROG_DEBUG_, 0, FDISK_DEBUG);
}
static void reply_sighandler(int sig __attribute__((unused)))
{
DBG(ASK, ul_debug("got signal"));
}
static int reply_running;
#ifdef HAVE_LIBREADLINE
static char *reply_line;
static void reply_linehandler(char *line)
{
reply_line = line;
reply_running = 0;
rl_callback_handler_remove(); /* avoid duplicate prompt */
}
#endif
int get_user_reply(const char *prompt, char *buf, size_t bufsz)
{
struct sigaction oldact, act = {
.sa_handler = reply_sighandler
};
struct pollfd fds[] = {
{ .fd = fileno(stdin), .events = POLLIN }
};
size_t sz;
int ret = 0;
DBG(ASK, ul_debug("asking for user reply %s", is_interactive ? "[interactive]" : ""));
sigemptyset(&act.sa_mask);
sigaction(SIGINT, &act, &oldact);
#ifdef HAVE_LIBREADLINE
if (is_interactive)
rl_callback_handler_install(prompt, reply_linehandler);
#endif
reply_running = 1;
do {
int rc;
*buf = '\0';
#ifdef HAVE_LIBREADLINE
if (!is_interactive)
#endif
{
fputs(prompt, stdout);
fflush(stdout);
}
rc = poll(fds, 1, -1);
if (rc == -1 && errno == EINTR) { /* interrupted by signal */
DBG(ASK, ul_debug("cancel by CTRL+C"));
ret = -ECANCELED;
goto done;
}
if (rc == -1 && errno != EAGAIN) { /* error */
ret = -errno;
goto done;
}
#ifdef HAVE_LIBREADLINE
if (is_interactive) {
/* read input and copy to buf[] */
rl_callback_read_char();
if (!reply_running && reply_line) {
sz = strlen(reply_line);
if (sz == 0)
buf[sz++] = '\n';
else
memcpy(buf, reply_line, min(sz, bufsz));
buf[min(sz, bufsz - 1)] = '\0';
free(reply_line);
reply_line = NULL;
}
} else
#endif
{
if (!fgets(buf, bufsz, stdin))
*buf = '\0';
break;
}
} while (reply_running);
if (!*buf) {
DBG(ASK, ul_debug("cancel by CTRL+D"));
ret = -ECANCELED;
goto done;
}
/*
* cleanup the reply
*/
sz = ltrim_whitespace((unsigned char *) buf);
if (sz && *(buf + sz - 1) == '\n')
*(buf + sz - 1) = '\0';
DBG(ASK, ul_debug("user's reply: >>>%s<<<", buf));
done:
#ifdef HAVE_LIBREADLINE
if (is_interactive)
rl_callback_handler_remove();
#endif
sigaction(SIGINT, &oldact, NULL);
return ret;
}
static int ask_menu(struct fdisk_context *cxt, struct fdisk_ask *ask,
char *buf, size_t bufsz)
{
const char *q = fdisk_ask_get_query(ask);
int dft = fdisk_ask_menu_get_default(ask);
if (q) {
fputs(q, stdout); /* print header */
fputc('\n', stdout);
}
do {
char prompt[128];
int key, c, rc;
const char *name, *desc;
size_t i = 0;
/* print menu items */
while (fdisk_ask_menu_get_item(ask, i++, &key, &name, &desc) == 0)
fprintf(stdout, " %c %s (%s)\n", key, name, desc);
/* ask for key */
snprintf(prompt, sizeof(prompt), _("Select (default %c): "), dft);
rc = get_user_reply(prompt, buf, bufsz);
if (rc)
return rc;
if (!*buf) {
fdisk_info(cxt, _("Using default response %c."), dft);
c = dft;
} else
c = tolower(buf[0]);
/* check result */
i = 0;
while (fdisk_ask_menu_get_item(ask, i++, &key, NULL, NULL) == 0) {
if (c == key) {
fdisk_ask_menu_set_result(ask, c);
return 0; /* success */
}
}
fdisk_warnx(cxt, _("Value out of range."));
} while (1);
return -EINVAL;
}
#define tochar(num) ((int) ('a' + num - 1))
static int ask_number(struct fdisk_context *cxt,
struct fdisk_ask *ask,
char *buf, size_t bufsz)
{
char prompt[128] = { '\0' };
const char *q = fdisk_ask_get_query(ask);
const char *range = fdisk_ask_number_get_range(ask);
uint64_t dflt = fdisk_ask_number_get_default(ask),
low = fdisk_ask_number_get_low(ask),
high = fdisk_ask_number_get_high(ask);
int inchar = fdisk_ask_number_inchars(ask);
assert(q);
DBG(ASK, ul_debug("asking for number "
"['%s', <%"PRIu64",%"PRIu64">, default=%"PRIu64", range: %s]",
q, low, high, dflt, range));
if (range && dflt >= low && dflt <= high) {
if (inchar)
snprintf(prompt, sizeof(prompt), _("%s (%s, default %c): "),
q, range, tochar(dflt));
else
snprintf(prompt, sizeof(prompt), _("%s (%s, default %"PRIu64"): "),
q, range, dflt);
} else if (dflt >= low && dflt <= high) {
if (inchar)
snprintf(prompt, sizeof(prompt), _("%s (%c-%c, default %c): "),
q, tochar(low), tochar(high), tochar(dflt));
else
snprintf(prompt, sizeof(prompt),
_("%s (%"PRIu64"-%"PRIu64", default %"PRIu64"): "),
q, low, high, dflt);
} else if (inchar)
snprintf(prompt, sizeof(prompt), _("%s (%c-%c): "),
q, tochar(low), tochar(high));
else
snprintf(prompt, sizeof(prompt), _("%s (%"PRIu64"-%"PRIu64"): "),
q, low, high);
do {
int rc = get_user_reply(prompt, buf, bufsz);
uint64_t num = 0;
if (rc)
return rc;
if (!*buf && dflt >= low && dflt <= high)
return fdisk_ask_number_set_result(ask, dflt);
if (isdigit_string(buf)) {
char *end;
errno = 0;
num = strtoumax(buf, &end, 10);
if (errno || buf == end || (end && *end))
continue;
} else if (inchar && isalpha(*buf)) {
num = tolower(*buf) - 'a' + 1;
} else
rc = -EINVAL;
if (rc == 0 && num >= low && num <= high)
return fdisk_ask_number_set_result(ask, num);
fdisk_warnx(cxt, _("Value out of range."));
} while (1);
return -1;
}
static int ask_offset(struct fdisk_context *cxt,
struct fdisk_ask *ask,
char *buf, size_t bufsz)
{
char prompt[128] = { '\0' };
const char *q = fdisk_ask_get_query(ask);
const char *range = fdisk_ask_number_get_range(ask);
uint64_t dflt = fdisk_ask_number_get_default(ask),
low = fdisk_ask_number_get_low(ask),
high = fdisk_ask_number_get_high(ask),
base = fdisk_ask_number_get_base(ask);
assert(q);
DBG(ASK, ul_debug("asking for offset ['%s', <%"PRIu64",%"PRIu64">, base=%"PRIu64", default=%"PRIu64", range: %s]",
q, low, high, base, dflt, range));
if (range && dflt >= low && dflt <= high)
snprintf(prompt, sizeof(prompt), _("%s (%s, default %"PRIu64"): "),
q, range, dflt);
else if (dflt >= low && dflt <= high)
snprintf(prompt, sizeof(prompt),
_("%s (%"PRIu64"-%"PRIu64", default %"PRIu64"): "),
q, low, high, dflt);
else
snprintf(prompt, sizeof(prompt), _("%s (%"PRIu64"-%"PRIu64"): "),
q, low, high);
do {
uintmax_t num = 0;
char sig = 0, *p;
int pwr = 0;
int rc = get_user_reply(prompt, buf, bufsz);
if (rc)
return rc;
if (!*buf && dflt >= low && dflt <= high)
return fdisk_ask_number_set_result(ask, dflt);
p = buf;
if (*p == '+' || *p == '-') {
sig = *buf;
p++;
}
rc = parse_size(p, &num, &pwr);
if (rc)
continue;
DBG(ASK, ul_debug("parsed size: %ju", num));
if (sig && pwr) {
/* +{size}{K,M,...} specified, the "num" is in bytes */
uint64_t unit = fdisk_ask_number_get_unit(ask);
num += unit/2; /* round */
num /= unit;
}
if (sig == '+')
num += base;
else if (sig == '-' && fdisk_ask_number_is_wrap_negative(ask))
num = high - num;
else if (sig == '-')
num = base - num;
DBG(ASK, ul_debug("final offset: %ju [sig: %c, power: %d, %s]",
num, sig, pwr,
sig ? "relative" : "absolute"));
if (num >= low && num <= high) {
if (sig && pwr)
fdisk_ask_number_set_relative(ask, 1);
return fdisk_ask_number_set_result(ask, (uint64_t)num);
}
fdisk_warnx(cxt, _("Value out of range."));
} while (1);
return -1;
}
static unsigned int info_count;
static void fputs_info(struct fdisk_ask *ask, FILE *out)
{
const char *msg;
assert(ask);
msg = fdisk_ask_print_get_mesg(ask);
if (!msg)
return;
if (info_count == 1)
fputc('\n', out);
fputs(msg, out);
fputc('\n', out);
}
int ask_callback(struct fdisk_context *cxt, struct fdisk_ask *ask,
void *data __attribute__((__unused__)))
{
int rc = 0;
char buf[BUFSIZ] = { '\0' };
assert(cxt);
assert(ask);
if (fdisk_ask_get_type(ask) != FDISK_ASKTYPE_INFO)
info_count = 0;
switch(fdisk_ask_get_type(ask)) {
case FDISK_ASKTYPE_MENU:
return ask_menu(cxt, ask, buf, sizeof(buf));
case FDISK_ASKTYPE_NUMBER:
return ask_number(cxt, ask, buf, sizeof(buf));
case FDISK_ASKTYPE_OFFSET:
return ask_offset(cxt, ask, buf, sizeof(buf));
case FDISK_ASKTYPE_INFO:
if (!fdisk_is_listonly(cxt))
info_count++;
fputs_info(ask, 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:
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;
case FDISK_ASKTYPE_STRING:
{
char prmt[BUFSIZ];
snprintf(prmt, sizeof(prmt), "%s: ", fdisk_ask_get_query(ask));
fputc('\n', stdout);
rc = get_user_reply(prmt, buf, sizeof(buf));
if (rc == 0)
fdisk_ask_string_set_result(ask, xstrdup(buf));
DBG(ASK, ul_debug("string ask: reply '%s' [rc=%d]", buf, rc));
break;
}
default:
warnx(_("internal error: unsupported dialog type %d"), fdisk_ask_get_type(ask));
return -EINVAL;
}
return rc;
}
static struct fdisk_parttype *ask_partition_type(struct fdisk_context *cxt, int *canceled)
{
const char *q;
struct fdisk_label *lb;
assert(cxt);
lb = fdisk_get_label(cxt, NULL);
if (!lb)
return NULL;
*canceled = 0;
q = fdisk_label_has_code_parttypes(lb) ?
_("Hex code (type L to list all codes): ") :
_("Partition type (type L to list all types): ");
do {
char buf[256] = { '\0' };
int rc = get_user_reply(q, buf, sizeof(buf));
if (rc) {
if (rc == -ECANCELED)
*canceled = 1;
break;
}
if (buf[1] == '\0' && toupper(*buf) == 'L')
list_partition_types(cxt);
else if (*buf) {
struct fdisk_parttype *t = fdisk_label_parse_parttype(lb, buf);
if (!t)
fdisk_info(cxt, _("Failed to parse '%s' partition type."), buf);
return t;
}
} while (1);
return NULL;
}
void list_partition_types(struct fdisk_context *cxt)
{
size_t ntypes = 0;
struct fdisk_label *lb;
assert(cxt);
lb = fdisk_get_label(cxt, NULL);
if (!lb)
return;
ntypes = fdisk_label_get_nparttypes(lb);
if (!ntypes)
return;
if (fdisk_label_has_code_parttypes(lb)) {
/*
* Prints in 4 columns in format <hex> <name>
*/
size_t last[4], done = 0, next = 0, size;
int i;
size = ntypes;
for (i = 3; i >= 0; i--)
last[3 - i] = done += (size + i - done) / (i + 1);
i = done = 0;
do {
#define NAME_WIDTH 15
char name[NAME_WIDTH * MB_LEN_MAX];
size_t width = NAME_WIDTH;
const struct fdisk_parttype *t = fdisk_label_get_parttype(lb, next);
size_t ret;
if (fdisk_parttype_get_name(t)) {
printf("%c%2x ", i ? ' ' : '\n',
fdisk_parttype_get_code(t));
ret = mbsalign(_(fdisk_parttype_get_name(t)),
name, sizeof(name),
&width, MBS_ALIGN_LEFT, 0);
if (ret == (size_t)-1 || ret >= sizeof(name))
printf("%-15.15s",
_(fdisk_parttype_get_name(t)));
else
fputs(name, stdout);
}
next = last[i++] + done;
if (i > 3 || next >= last[i]) {
i = 0;
next = ++done;
}
} while (done < last[0]);
} else {
/*
* Prints 1 column in format <idx> <name> <typestr>
*/
size_t i;
pager_open();
for (i = 0; i < ntypes; i++) {
const struct fdisk_parttype *t = fdisk_label_get_parttype(lb, i);
printf("%3zu %-30s %s\n", i + 1,
fdisk_parttype_get_name(t),
fdisk_parttype_get_string(t));
}
pager_close();
}
putchar('\n');
}
void toggle_dos_compatibility_flag(struct fdisk_context *cxt)
{
struct fdisk_label *lb = fdisk_get_label(cxt, "dos");
int flag;
if (!lb)
return;
flag = !fdisk_dos_is_compatible(lb);
fdisk_info(cxt, flag ?
_("DOS Compatibility flag is set (DEPRECATED!)") :
_("DOS Compatibility flag is not set"));
fdisk_dos_enable_compatible(lb, flag);
if (fdisk_is_label(cxt, DOS))
fdisk_reset_alignment(cxt); /* reset the current label */
}
void change_partition_type(struct fdisk_context *cxt)
{
size_t i;
struct fdisk_parttype *t = NULL;
struct fdisk_partition *pa = NULL;
const char *old = NULL;
int canceled = 0;
assert(cxt);
if (fdisk_ask_partnum(cxt, &i, FALSE))
return;
if (fdisk_get_partition(cxt, i, &pa)) {
fdisk_warnx(cxt, _("Partition %zu does not exist yet!"), i + 1);
return;
}
t = (struct fdisk_parttype *) fdisk_partition_get_type(pa);
old = t ? fdisk_parttype_get_name(t) : _("Unknown");
do {
t = ask_partition_type(cxt, &canceled);
if (canceled)
break;
} while (!t);
if (canceled == 0 && t && fdisk_set_partition_type(cxt, i, t) == 0)
fdisk_info(cxt,
_("Changed type of partition '%s' to '%s'."),
old, t ? fdisk_parttype_get_name(t) : _("Unknown"));
else
fdisk_info(cxt,
_("Type of partition %zu is unchanged: %s."),
i + 1, old);
fdisk_unref_partition(pa);
fdisk_unref_parttype(t);
}
int print_partition_info(struct fdisk_context *cxt)
{
struct fdisk_partition *pa = NULL;
int rc = 0;
size_t i, nfields;
int *fields = NULL;
struct fdisk_label *lb = fdisk_get_label(cxt, NULL);
if ((rc = fdisk_ask_partnum(cxt, &i, FALSE)))
return rc;
if ((rc = fdisk_get_partition(cxt, i, &pa))) {
fdisk_warnx(cxt, _("Partition %zu does not exist yet!"), i + 1);
return rc;
}
if ((rc = fdisk_label_get_fields_ids_all(lb, cxt, &fields, &nfields)))
goto clean_data;
for (i = 0; i < nfields; ++i) {
int id = fields[i];
char *data = NULL;
const struct fdisk_field *fd = fdisk_label_get_field(lb, id);
if (!fd)
continue;
rc = fdisk_partition_to_string(pa, cxt, id, &data);
if (rc < 0)
goto clean_data;
if (!data || !*data)
continue;
fdisk_info(cxt, "%15s: %s", fdisk_field_get_name(fd), data);
free(data);
}
clean_data:
fdisk_unref_partition(pa);
free(fields);
return rc;
}
static size_t skip_empty(const unsigned char *buf, size_t i, size_t sz)
{
size_t next;
const unsigned char *p0 = buf + i;
for (next = i + 16; next < sz; next += 16) {
if (memcmp(p0, buf + next, 16) != 0)
break;
}
return next == i + 16 ? i : next;
}
static void dump_buffer(off_t base, unsigned char *buf, size_t sz, int all)
{
size_t i, l, next = 0;
if (!buf)
return;
for (i = 0, l = 0; i < sz; i++, l++) {
if (l == 0) {
if (all == 0 && !next)
next = skip_empty(buf, i, sz);
printf("%08jx ", (intmax_t)base + i);
}
printf(" %02x", buf[i]);
if (l == 7) /* words separator */
fputs(" ", stdout);
else if (l == 15) {
fputc('\n', stdout); /* next line */
l = -1;
if (next > i) {
printf("*\n");
i = next - 1;
}
next = 0;
}
}
if (l > 0)
printf("\n");
}
static void dump_blkdev(struct fdisk_context *cxt, const char *name,
uint64_t offset, size_t size, int all)
{
int fd = fdisk_get_devfd(cxt);
fdisk_info(cxt, _("\n%s: offset = %"PRIu64", size = %zu bytes."),
name, offset, size);
assert(fd >= 0);
if (lseek(fd, (off_t) offset, SEEK_SET) == (off_t) -1)
fdisk_warn(cxt, _("cannot seek"));
else {
unsigned char *buf = xmalloc(size);
if (read_all(fd, (char *) buf, size) != (ssize_t) size)
fdisk_warn(cxt, _("cannot read"));
else
dump_buffer(offset, buf, size, all);
free(buf);
}
}
void dump_firstsector(struct fdisk_context *cxt)
{
int all = !isatty(STDOUT_FILENO);
assert(cxt);
dump_blkdev(cxt, _("First sector"), 0, fdisk_get_sector_size(cxt), all);
}
void dump_disklabel(struct fdisk_context *cxt)
{
int all = !isatty(STDOUT_FILENO);
int i = 0;
const char *name = NULL;
uint64_t offset = 0;
size_t size = 0;
assert(cxt);
while (fdisk_locate_disklabel(cxt, i++, &name, &offset, &size) == 0 && size)
dump_blkdev(cxt, name, offset, size, all);
}
static fdisk_sector_t get_dev_blocks(char *dev)
{
int fd, ret;
fdisk_sector_t size;
if ((fd = open(dev, O_RDONLY)) < 0)
err(EXIT_FAILURE, _("cannot open %s"), dev);
ret = blkdev_get_sectors(fd, (unsigned long long *) &size);
close(fd);
if (ret < 0)
err(EXIT_FAILURE, _("BLKGETSIZE ioctl failed on %s"), dev);
return size/2;
}
void follow_wipe_mode(struct fdisk_context *cxt)
{
int dowipe = wipemode == WIPEMODE_ALWAYS ? 1 : 0;
if (isatty(STDIN_FILENO) && wipemode == WIPEMODE_AUTO)
dowipe = 1; /* do it in interactive mode */
if (fdisk_is_ptcollision(cxt) && wipemode != WIPEMODE_NEVER)
dowipe = 1; /* always remove old PT */
fdisk_enable_wipe(cxt, dowipe);
if (dowipe)
fdisk_warnx(cxt, _(
"The old %s signature will be removed by a write command."),
fdisk_get_collision(cxt));
else
fdisk_warnx(cxt, _(
"The old %s signature may remain on the device. "
"It is recommended to wipe the device with wipefs(8) or "
"fdisk --wipe, in order to avoid possible collisions."),
fdisk_get_collision(cxt));
}
static void __attribute__((__noreturn__)) usage(void)
{
FILE *out = stdout;
fputs(USAGE_HEADER, out);
fprintf(out,
_(" %1$s [options] <disk> change partition table\n"
" %1$s [options] -l [<disk>] list partition table(s)\n"),
program_invocation_short_name);
fputs(USAGE_SEPARATOR, out);
fputs(_("Display or manipulate a disk partition table.\n"), out);
fputs(USAGE_OPTIONS, out);
fputs(_(" -b, --sector-size <size> physical and logical sector size\n"), out);
fputs(_(" -B, --protect-boot don't erase bootbits when creating a new label\n"), out);
fputs(_(" -c, --compatibility[=<mode>] mode is 'dos' or 'nondos' (default)\n"), out);
fputs(_(" -L, --color[=<when>] colorize output (auto, always or never)\n"), out);
fprintf(out,
" %s\n", USAGE_COLORS_DEFAULT);
fputs(_(" -l, --list display partitions and exit\n"), out);
fputs(_(" -o, --output <list> output columns\n"), out);
fputs(_(" -t, --type <type> recognize specified partition table type only\n"), out);
fputs(_(" -u, --units[=<unit>] display units: 'cylinders' or 'sectors' (default)\n"), out);
fputs(_(" -s, --getsz display device size in 512-byte sectors [DEPRECATED]\n"), out);
fputs(_(" --bytes print SIZE in bytes rather than in human readable format\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(USAGE_SEPARATOR, out);
fputs(_(" -C, --cylinders <number> specify the number of cylinders\n"), out);
fputs(_(" -H, --heads <number> specify the number of heads\n"), out);
fputs(_(" -S, --sectors <number> specify the number of sectors per track\n"), out);
fputs(USAGE_SEPARATOR, out);
printf(USAGE_HELP_OPTIONS(31));
list_available_columns(out);
printf(USAGE_MAN_TAIL("fdisk(8)"));
exit(EXIT_SUCCESS);
}
enum {
ACT_FDISK = 0, /* default */
ACT_LIST,
ACT_SHOWSIZE
};
int main(int argc, char **argv)
{
int rc, i, c, act = ACT_FDISK;
int colormode = UL_COLORMODE_UNDEF;
struct fdisk_context *cxt;
char *outarg = NULL;
enum {
OPT_BYTES = CHAR_MAX + 1
};
static const struct option longopts[] = {
{ "bytes", no_argument, NULL, OPT_BYTES },
{ "color", optional_argument, NULL, 'L' },
{ "compatibility", optional_argument, NULL, 'c' },
{ "cylinders", required_argument, NULL, 'C' },
{ "heads", required_argument, NULL, 'H' },
{ "sectors", required_argument, NULL, 'S' },
{ "getsz", no_argument, NULL, 's' },
{ "help", no_argument, NULL, 'h' },
{ "list", no_argument, NULL, 'l' },
{ "sector-size", required_argument, NULL, 'b' },
{ "type", required_argument, NULL, 't' },
{ "units", optional_argument, NULL, 'u' },
{ "version", no_argument, NULL, 'V' },
{ "output", no_argument, NULL, 'o' },
{ "protect-boot", no_argument, NULL, 'B' },
{ "wipe", required_argument, NULL, 'w' },
{ "wipe-partitions",required_argument, NULL, 'W' },
{ NULL, 0, NULL, 0 }
};
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
close_stdout_atexit();
fdisk_init_debug(0);
scols_init_debug(0);
fdiskprog_init_debug();
cxt = fdisk_new_context();
if (!cxt)
err(EXIT_FAILURE, _("failed to allocate libfdisk context"));
fdisk_set_ask(cxt, ask_callback, NULL);
while ((c = getopt_long(argc, argv, "b:Bc::C:hH:lL::o:sS:t:u::vVw:W:",
longopts, NULL)) != -1) {
switch (c) {
case 'b':
{
size_t sz = strtou32_or_err(optarg,
_("invalid sector size argument"));
if (sz != 512 && sz != 1024 && sz != 2048 && sz != 4096)
errx(EXIT_FAILURE, _("invalid sector size argument"));
fdisk_save_user_sector_size(cxt, sz, sz);
break;
}
case 'B':
fdisk_enable_bootbits_protection(cxt, 1);
break;
case 'C':
fdisk_save_user_geometry(cxt,
strtou32_or_err(optarg,
_("invalid cylinders argument")),
0, 0);
break;
case 'c':
if (optarg) {
/* this setting is independent on the current
* actively used label
*/
char *p = *optarg == '=' ? optarg + 1 : optarg;
struct fdisk_label *lb = fdisk_get_label(cxt, "dos");
if (!lb)
err(EXIT_FAILURE, _("not found DOS label driver"));
if (strcmp(p, "dos") == 0)
fdisk_dos_enable_compatible(lb, TRUE);
else if (strcmp(p, "nondos") == 0)
fdisk_dos_enable_compatible(lb, FALSE);
else
errx(EXIT_FAILURE, _("unknown compatibility mode '%s'"), p);
}
/* use default if no optarg specified */
break;
case 'H':
fdisk_save_user_geometry(cxt, 0,
strtou32_or_err(optarg,
_("invalid heads argument")),
0);
break;
case 'S':
fdisk_save_user_geometry(cxt, 0, 0,
strtou32_or_err(optarg,
_("invalid sectors argument")));
break;
case 'l':
act = ACT_LIST;
break;
case 'L':
colormode = UL_COLORMODE_AUTO;
if (optarg)
colormode = colormode_or_err(optarg,
_("unsupported color mode"));
break;
case 'o':
outarg = optarg;
break;
case 's':
act = ACT_SHOWSIZE;
break;
case 't':
{
struct fdisk_label *lb = NULL;
while (fdisk_next_label(cxt, &lb) == 0)
fdisk_label_set_disabled(lb, 1);
lb = fdisk_get_label(cxt, optarg);
if (!lb)
errx(EXIT_FAILURE, _("unsupported disklabel: %s"), optarg);
fdisk_label_set_disabled(lb, 0);
break;
}
case 'u':
if (optarg && *optarg == '=')
optarg++;
if (fdisk_set_unit(cxt, optarg) != 0)
errx(EXIT_FAILURE, _("unsupported unit"));
break;
case 'V': /* preferred for util-linux */
case 'v': /* for backward compatibility only */
print_version(EXIT_SUCCESS);
case 'w':
wipemode = wipemode_from_string(optarg);
if (wipemode < 0)
errx(EXIT_FAILURE, _("unsupported wipe mode"));
break;
case 'W':
pwipemode = wipemode_from_string(optarg);
if (pwipemode < 0)
errx(EXIT_FAILURE, _("unsupported wipe mode"));
break;
case 'h':
usage();
case OPT_BYTES:
fdisk_set_size_unit(cxt, FDISK_SIZEUNIT_BYTES);
break;
default:
errtryhelp(EXIT_FAILURE);
}
}
if (argc-optind != 1 && fdisk_has_user_device_properties(cxt))
warnx(_("The device properties (sector size and geometry) should"
" be used with one specified device only."));
colors_init(colormode, "fdisk");
is_interactive = isatty(STDIN_FILENO);
switch (act) {
case ACT_LIST:
fdisk_enable_listonly(cxt, 1);
init_fields(cxt, outarg, NULL);
if (argc > optind) {
int k;
int ct = 0;
for (rc = 0, k = optind; k < argc; k++) {
if (ct)
fputs("\n\n", stdout);
rc += print_device_pt(cxt, argv[k], 1, 0);
ct++;
}
if (rc)
return EXIT_FAILURE;
} else
print_all_devices_pt(cxt, 0);
break;
case ACT_SHOWSIZE:
/* deprecated */
if (argc - optind <= 0) {
warnx(_("bad usage"));
errtryhelp(EXIT_FAILURE);
}
for (i = optind; i < argc; i++) {
uintmax_t blks = get_dev_blocks(argv[i]);
if (argc - optind == 1)
printf("%ju\n", blks);
else
printf("%s: %ju\n", argv[i], blks);
}
break;
case ACT_FDISK:
if (argc-optind != 1) {
warnx(_("bad usage"));
errtryhelp(EXIT_FAILURE);
}
/* Here starts interactive mode, use fdisk_{warn,info,..} functions */
color_scheme_enable("welcome", UL_COLOR_GREEN);
fdisk_info(cxt, _("Welcome to fdisk (%s)."), PACKAGE_STRING);
color_disable();
fdisk_info(cxt, _("Changes will remain in memory only, until you decide to write them.\n"
"Be careful before using the write command.\n"));
rc = fdisk_assign_device(cxt, argv[optind], 0);
if (rc == -EACCES) {
rc = fdisk_assign_device(cxt, argv[optind], 1);
if (rc == 0)
fdisk_warnx(cxt, _("Device is open in read-only mode."));
}
if (rc)
err(EXIT_FAILURE, _("cannot open %s"), argv[optind]);
fflush(stdout);
if (fdisk_get_collision(cxt))
follow_wipe_mode(cxt);
if (!fdisk_has_label(cxt)) {
fdisk_info(cxt, _("Device does not contain a recognized partition table."));
fdisk_create_disklabel(cxt, NULL);
} else if (fdisk_is_label(cxt, GPT) && fdisk_gpt_is_hybrid(cxt))
fdisk_warnx(cxt, _(
"A hybrid GPT was detected. You have to sync "
"the hybrid MBR manually (expert command 'M')."));
init_fields(cxt, outarg, NULL); /* -o <columns> */
if (!fdisk_is_readonly(cxt)) {
fdisk_get_partitions(cxt, &original_layout);
device_is_used = fdisk_device_is_used(cxt);
}
while (1)
process_fdisk_menu(&cxt);
}
fdisk_unref_context(cxt);
return EXIT_SUCCESS;
}
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