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/*
* 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 "c.h"
#include "xalloc.h"
#include "nls.h"
#include "debug.h"
#include "strutils.h"
#include "closestream.h"
#include "colors.h"
#include "libfdisk.h"
#include "fdisk-list.h"
/*
* sfdisk debug stuff (see fdisk.h and include/debug.h)
*/
UL_DEBUG_DEFINE_MASK(sfdisk);
UL_DEBUG_DEFINE_MASKANEMS(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_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 = 0, /* default */
ACT_ACTIVATE,
ACT_CHANGE_ID,
ACT_DUMP,
ACT_LIST,
ACT_LIST_SIZES,
ACT_LIST_TYPES,
ACT_VERIFY
};
struct sfdisk {
int act; /* action */
size_t partno; /* partition number <1..N> */
const char *devname; /* disk */
struct fdisk_context *cxt; /* libfdisk context */
};
static void sfdiskprog_init_debug(void)
{
__UL_INIT_DEBUG(sfdisk, SFDISKPROG_DEBUG_, 0, SFDISK_DEBUG);
}
static int ask_callback(struct fdisk_context *cxt, struct fdisk_ask *ask,
void *data __attribute__((__unused__)))
{
assert(cxt);
assert(ask);
switch(fdisk_ask_get_type(ask)) {
case FDISK_ASKTYPE_INFO:
fputs(fdisk_ask_print_get_mesg(ask), stdout);
fputc('\n', stdout);
break;
case FDISK_ASKTYPE_WARNX:
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:
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;
default:
break;
}
return 0;
}
static void sfdisk_init(struct sfdisk *sf)
{
fdisk_init_debug(0);
sfdiskprog_init_debug();
colors_init(UL_COLORMODE_UNDEF, "sfdisk");
sf->cxt = fdisk_new_context();
if (!sf->cxt)
err(EXIT_FAILURE, _("failed to allocate libfdisk context"));
fdisk_set_ask(sf->cxt, ask_callback, NULL);
}
static int sfdisk_deinit(struct sfdisk *sf)
{
int rc;
assert(sf);
assert(sf->cxt);
if (sf->devname)
rc = fdisk_deassign_device(sf->cxt, 0);
fdisk_unref_context(sf->cxt);
memset(sf, 0, sizeof(*sf));
return rc;
}
/* --list backend */
static int command_list_partitions(struct sfdisk *sf, int argc, char **argv)
{
int i;
fdisk_enable_listonly(sf->cxt, 1);
if (argc > optind) {
for (i = optind; i < argc; i++)
print_device_pt(sf->cxt, argv[i], 0);
} else
print_all_devices_pt(sf->cxt);
return 0;
}
/* default command */
static int command_fdisk(struct sfdisk *sf, int argc, char **argv)
{
int rc;
if (argc > 1)
sf->devname = argv[optind++];
if (argc > 2)
sf->partno = strtou32_or_err(argv[optind++],
_("failed to parse partition number"));
if (!sf->devname)
errx(EXIT_FAILURE, _("no disk device specified"));
rc = fdisk_assign_device(sf->cxt, sf->devname, 0);
if (rc != 0)
err(EXIT_FAILURE, _("cannot open %s"), sf->devname);
return rc;
}
static void __attribute__ ((__noreturn__)) usage(FILE *out)
{
fputs(USAGE_HEADER, out);
fprintf(out,
_(" %1$s [options] <disk>\n"), program_invocation_short_name);
fputs(USAGE_OPTIONS, out);
fputs(USAGE_SEPARATOR, out);
fputs(USAGE_HELP, out);
fputs(USAGE_VERSION, out);
fprintf(out, USAGE_MAN_TAIL("sfdisk(8)"));
exit(out == stderr ? EXIT_FAILURE : EXIT_SUCCESS);
}
int main(int argc, char *argv[])
{
struct sfdisk _sf = { .partno = 0 }, *sf = &_sf;
int rc, c;
static const struct option longopts[] = {
{ "list", no_argument, NULL, 'l' },
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, 'v' },
{ NULL, 0, 0, 0 },
};
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
atexit(close_stdout);
while((c = getopt_long(argc, argv, "hlv", longopts, NULL)) != -1) {
switch(c) {
case 'h':
usage(stdout);
break;
case 'l':
sf->act = ACT_LIST;
break;
case 'v':
printf(_("%s from %s\n"), program_invocation_short_name,
PACKAGE_STRING);
return EXIT_SUCCESS;
}
}
sfdisk_init(sf);
switch (sf->act) {
case ACT_LIST:
rc = command_list_partitions(sf, argc - optind, argv + optind);
break;
case ACT_FDISK:
rc = command_fdisk(sf, argc - optind, argv + optind);
break;
}
sfdisk_deinit(sf);
DBG(MISC, ul_debug("bye! [rc=%d]", rc));
return rc == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
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