[thirdparty/util-linux.git] / sys-utils / setarch.c

/*
 * Copyright (C) 2003-2007 Red Hat, Inc.
 *
 * This file is part of util-linux.
 *
 * This file 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 2 of the License, or
 * (at your option) any later version.
 *
 * This file 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.
 *
 *
 * Written by Elliot Lee <sopwith@redhat.com>
 * New personality options & code added by Jindrich Novy <jnovy@redhat.com>
 * ADD_NO_RANDOMIZE flag added by Arjan van de Ven <arjanv@redhat.com>
 * Help and MIPS support from Mike Frysinger (vapier@gentoo.org)
 * Better error handling from Dmitry V. Levin (ldv@altlinux.org)
 *
 * based on ideas from the ppc32 util by Guy Streeter (2002-01), based on the
 * sparc32 util by Jakub Jelinek (1998, 1999)
 */

#include <syscall.h>
#include <linux/personality.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <getopt.h>
#include <limits.h>
#include <sys/utsname.h>
#include "nls.h"
#include "c.h"
#include "closestream.h"

#define set_pers(pers) ((long)syscall(SYS_personality, pers))

/* Options without equivalent short options */
enum {
	OPT_4GB		= CHAR_MAX + 1,
	OPT_UNAME26
};

#define turn_on(_flag, _opts) \
	do { \
		(_opts) |= _flag; \
		if (verbose) \
			printf(_("Switching on %s.\n"), #_flag); \
	} while(0)


#ifndef UNAME26
# define UNAME26                 0x0020000
#endif
#ifndef ADDR_NO_RANDOMIZE
# define ADDR_NO_RANDOMIZE       0x0040000
#endif
#ifndef FDPIC_FUNCPTRS
# define FDPIC_FUNCPTRS          0x0080000
#endif
#ifndef MMAP_PAGE_ZERO
# define MMAP_PAGE_ZERO          0x0100000
#endif
#ifndef ADDR_COMPAT_LAYOUT
# define ADDR_COMPAT_LAYOUT      0x0200000
#endif
#ifndef READ_IMPLIES_EXEC
# define READ_IMPLIES_EXEC       0x0400000
#endif
#ifndef ADDR_LIMIT_32BIT
# define ADDR_LIMIT_32BIT        0x0800000
#endif
#ifndef SHORT_INODE
# define SHORT_INODE             0x1000000
#endif
#ifndef WHOLE_SECONDS
# define WHOLE_SECONDS           0x2000000
#endif
#ifndef STICKY_TIMEOUTS
# define STICKY_TIMEOUTS         0x4000000
#endif
#ifndef ADDR_LIMIT_3GB
# define ADDR_LIMIT_3GB          0x8000000
#endif

static void __attribute__((__noreturn__))
show_help(void)
{
  fputs(USAGE_HEADER, stdout);
  printf(_(" %s%s [options] [program [program arguments]]\n"),
	 program_invocation_short_name,
	 !strcmp(program_invocation_short_name, "setarch") ? " <arch>" : "");

  fputs(USAGE_OPTIONS, stdout);
  fputs(_(" -v, --verbose            says what options are being switched on\n"), stdout);
  fputs(_(" -R, --addr-no-randomize  disables randomization of the virtual address space\n"), stdout);
  fputs(_(" -F, --fdpic-funcptrs     makes function pointers point to descriptors\n"), stdout);
  fputs(_(" -Z, --mmap-page-zero     turns on MMAP_PAGE_ZERO\n"), stdout);
  fputs(_(" -L, --addr-compat-layout changes the way virtual memory is allocated\n"), stdout);
  fputs(_(" -X, --read-implies-exec  turns on READ_IMPLIES_EXEC\n"), stdout);
  fputs(_(" -B, --32bit              turns on ADDR_LIMIT_32BIT\n"), stdout);
  fputs(_(" -I, --short-inode        turns on SHORT_INODE\n"), stdout);
  fputs(_(" -S, --whole-seconds      turns on WHOLE_SECONDS\n"), stdout);
  fputs(_(" -T, --sticky-timeouts    turns on STICKY_TIMEOUTS\n"), stdout);
  fputs(_(" -3, --3gb                limits the used address space to a maximum of 3 GB\n"), stdout);
  fputs(_("     --4gb                ignored (for backward compatibility only)\n"), stdout);
  fputs(_("     --uname-2.6          turns on UNAME26\n"), stdout);
  fputs(_("     --list               list settable architectures, and exit\n"), stdout);

  fputs(USAGE_SEPARATOR, stdout);
  fputs(USAGE_HELP, stdout);
  fputs(USAGE_VERSION, stdout);
  printf(USAGE_MAN_TAIL("setarch(8)"));

  exit(EXIT_SUCCESS);
}

static void __attribute__((__noreturn__))
show_usage(const char *s)
{
  if (s)
    errx(EXIT_FAILURE, _("%s\nTry `%s --help' for more information."), s, program_invocation_short_name);
  else
    errx(EXIT_FAILURE, _("Try `%s --help' for more information."), program_invocation_short_name);
}

static void __attribute__((__noreturn__))
show_version(void)
{
  printf(UTIL_LINUX_VERSION);
  exit(EXIT_SUCCESS);
}

static int
set_arch(const char *pers, unsigned long options, int list)
{
  struct utsname un;
  int i;
  unsigned long pers_value;

  struct {
    int perval;
    const char *target_arch, *result_arch;
  } transitions[] = {
    {UNAME26, "uname26", NULL},
    {PER_LINUX32, "linux32", NULL},
    {PER_LINUX, "linux64", NULL},
#if defined(__powerpc__) || defined(__powerpc64__)
#ifdef __BIG_ENDIAN__
    {PER_LINUX32, "ppc32", "ppc"},
    {PER_LINUX32, "ppc", "ppc"},
    {PER_LINUX, "ppc64", "ppc64"},
    {PER_LINUX, "ppc64pseries", "ppc64"},
    {PER_LINUX, "ppc64iseries", "ppc64"},
#else
    {PER_LINUX32, "ppc32le", "ppcle"},
    {PER_LINUX32, "ppcle", "ppcle"},
    {PER_LINUX, "ppc64le", "ppc64le"},
#endif
#endif
#if defined(__x86_64__) || defined(__i386__) || defined(__ia64__)
    {PER_LINUX32, "i386", "i386"},
    {PER_LINUX32, "i486", "i386"},
    {PER_LINUX32, "i586", "i386"},
    {PER_LINUX32, "i686", "i386"},
    {PER_LINUX32, "athlon", "i386"},
#endif
#if defined(__x86_64__) || defined(__i386__)
    {PER_LINUX, "x86_64", "x86_64"},
#endif
#if defined(__ia64__) || defined(__i386__)
    {PER_LINUX, "ia64", "ia64"},
#endif
#if defined(__hppa__)
    {PER_LINUX32, "parisc32", "parisc"},
    {PER_LINUX32, "parisc", "parisc"},
    {PER_LINUX, "parisc64", "parisc64"},
#endif
#if defined(__s390x__) || defined(__s390__)
    {PER_LINUX32, "s390", "s390"},
    {PER_LINUX, "s390x", "s390x"},
#endif
#if defined(__sparc64__) || defined(__sparc__)
    {PER_LINUX32, "sparc", "sparc"},
    {PER_LINUX32, "sparc32bash", "sparc"},
    {PER_LINUX32, "sparc32", "sparc"},
    {PER_LINUX, "sparc64", "sparc64"},
#endif
#if defined(__mips64__) || defined(__mips__)
    {PER_LINUX32, "mips32", "mips"},
    {PER_LINUX32, "mips", "mips"},
    {PER_LINUX, "mips64", "mips64"},
#endif
#if defined(__alpha__)
    {PER_LINUX, "alpha", "alpha"},
    {PER_LINUX, "alphaev5", "alpha"},
    {PER_LINUX, "alphaev56", "alpha"},
    {PER_LINUX, "alphaev6", "alpha"},
    {PER_LINUX, "alphaev67", "alpha"},
#endif
    {-1, NULL, NULL}
  };

  if (list) {
    for(i = 0; transitions[i].target_arch != NULL; i++)
      printf("%s\n", transitions[i].target_arch);
    return 0;
  }

  for(i = 0; transitions[i].perval >= 0; i++)
      if(!strcmp(pers, transitions[i].target_arch))
	break;

  if(transitions[i].perval < 0)
    errx(EXIT_FAILURE, _("%s: Unrecognized architecture"), pers);

  pers_value = transitions[i].perval | options;
  if (set_pers(pers_value) == -EINVAL)
    return 1;

  uname(&un);
  if(transitions[i].result_arch &&
	strcmp(un.machine, transitions[i].result_arch))
  {
    if(strcmp(transitions[i].result_arch, "i386")
       || (strcmp(un.machine, "i486")
	   && strcmp(un.machine, "i586")
	   && strcmp(un.machine, "i686")
	   && strcmp(un.machine, "athlon")))
      errx(EXIT_FAILURE, _("%s: Unrecognized architecture"), pers);
  }

  return 0;
}

int main(int argc, char *argv[])
{
  const char *p;
  unsigned long options = 0;
  int verbose = 0;
  int c;

  /* Options --3gb and --4gb are for compatibitity with an old Debian setarch
     implementation. */
  static const struct option longopts[] =
  {
      { "help",               0, 0, 'h' },
      { "version",            0, 0, 'V' },
      { "verbose",            0, 0, 'v' },
      { "addr-no-randomize",  0, 0, 'R' },
      { "fdpic-funcptrs",     0, 0, 'F' },
      { "mmap-page-zero",     0, 0, 'Z' },
      { "addr-compat-layout", 0, 0, 'L' },
      { "read-implies-exec",  0, 0, 'X' },
      { "32bit",              0, 0, 'B' },
      { "short-inode",        0, 0, 'I' },
      { "whole-seconds",      0, 0, 'S' },
      { "sticky-timeouts",    0, 0, 'T' },
      { "3gb",                0, 0, '3' },
      { "4gb",                0, 0, OPT_4GB },
      { "uname-2.6",          0, 0, OPT_UNAME26 },
      { NULL,                 0, 0, 0 }
  };

  setlocale(LC_ALL, "");
  bindtextdomain(PACKAGE, LOCALEDIR);
  textdomain(PACKAGE);
  atexit(close_stdout);

  if (argc < 1)
    show_usage(_("Not enough arguments"));

  p = program_invocation_short_name;
  if (!strcmp(p, "setarch")) {
    argc--;
    if (argc < 1)
      show_usage(_("Not enough arguments"));
    p = argv[1];
    argv[1] = argv[0];		/* for getopt_long() to get the program name */
    argv++;
    if (!strcmp(p, "-h") || !strcmp(p, "--help"))
      show_help();
    else if (!strcmp(p, "-V") || !strcmp(p, "--version"))
      show_version();
    else if (!strcmp(p, "--list")) {
      set_arch(argv[0], 0L, 1);
      return EXIT_SUCCESS;
    }
  }
  #if defined(__sparc64__) || defined(__sparc__)
   if (!strcmp(p, "sparc32bash")) {
       if (set_arch(p, 0L, 0))
           err(EXIT_FAILURE, _("Failed to set personality to %s"), p);
       execl("/bin/bash", NULL);
       err(EXIT_FAILURE, _("failed to execute %s"), "/bin/bash");
   }
  #endif

  while ((c = getopt_long(argc, argv, "+hVv3BFILRSTXZ", longopts, NULL)) != -1) {
    switch (c) {
    case 'h':
      show_help();
      break;
    case 'V':
      show_version();
      break;
    case 'v':
      verbose = 1;
      break;
    case 'R':
	turn_on(ADDR_NO_RANDOMIZE, options);
	break;
    case 'F':
	turn_on(FDPIC_FUNCPTRS, options);
	break;
    case 'Z':
	turn_on(MMAP_PAGE_ZERO, options);
	break;
    case 'L':
	turn_on(ADDR_COMPAT_LAYOUT, options);
	break;
    case 'X':
	turn_on(READ_IMPLIES_EXEC, options);
	break;
    case 'B':
	turn_on(ADDR_LIMIT_32BIT, options);
	break;
    case 'I':
	turn_on(SHORT_INODE, options);
	break;
    case 'S':
	turn_on(WHOLE_SECONDS, options);
	break;
    case 'T':
	turn_on(STICKY_TIMEOUTS, options);
	break;
    case '3':
	turn_on(ADDR_LIMIT_3GB, options);
	break;
    case OPT_4GB:          /* just ignore this one */
      break;
    case OPT_UNAME26:
	turn_on(UNAME26, options);
	break;
    default:
        show_usage(NULL);
    }
  }

  argc -= optind;
  argv += optind;

  if (set_arch(p, options, 0))
    err(EXIT_FAILURE, _("Failed to set personality to %s"), p);

  /* flush all output streams before exec */
  fflush(NULL);

  if (!argc) {
    execl("/bin/sh", "-sh", NULL);
    err(EXIT_FAILURE, _("failed to execute %s"), "/bin/sh");
  }

  execvp(argv[0], argv);
  err(EXIT_FAILURE, "%s", argv[0]);
  return EXIT_FAILURE;
}
Commit	Line	Data
8855c38d KZ	1	/*
	2	* Copyright (C) 2003-2007 Red Hat, Inc.
	3	*
601d12fb	4	* This file is part of util-linux.
8855c38d KZ	5	*
	6	* This file is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This file is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
8b3a46d2 KZ	16	*
	17	* Written by Elliot Lee <sopwith@redhat.com>
	18	* New personality options & code added by Jindrich Novy <jnovy@redhat.com>
	19	* ADD_NO_RANDOMIZE flag added by Arjan van de Ven <arjanv@redhat.com>
	20	* Help and MIPS support from Mike Frysinger (vapier@gentoo.org)
	21	* Better error handling from Dmitry V. Levin (ldv@altlinux.org)
	22	*
	23	* based on ideas from the ppc32 util by Guy Streeter (2002-01), based on the
	24	* sparc32 util by Jakub Jelinek (1998, 1999)
	25	*/
	26
8b3a46d2 KZ	27	#include <syscall.h>
	28	#include <linux/personality.h>
	29	#include <unistd.h>
	30	#include <stdio.h>
	31	#include <string.h>
	32	#include <stdlib.h>
8df90dec KZ	33	#include <getopt.h>
8df90dec KZ	34	#include <limits.h>
8b3a46d2	35	#include <sys/utsname.h>
a5b47e0a	36	#include "nls.h"
c60103a9	37	#include "c.h"
efb8854f	38	#include "closestream.h"
8b3a46d2 KZ	39
	40	#define set_pers(pers) ((long)syscall(SYS_personality, pers))
	41
70eebc40 BH	42	/* Options without equivalent short options */
	43	enum {
	44	OPT_4GB = CHAR_MAX + 1,
	45	OPT_UNAME26
	46	};
8df90dec KZ	47
	48	#define turn_on(_flag, _opts) \
	49	do { \
	50	(_opts) \|= _flag; \
	51	if (verbose) \
	52	printf(_("Switching on %s.\n"), #_flag); \
	53	} while(0)
	54
2d281745	55
f29a3d18	56	#ifndef UNAME26
70eebc40 BH	57	# define UNAME26 0x0020000
70eebc40 BH	58	#endif
f29a3d18	59	#ifndef ADDR_NO_RANDOMIZE
2d281745 KZ	60	# define ADDR_NO_RANDOMIZE 0x0040000
2d281745 KZ	61	#endif
f29a3d18	62	#ifndef FDPIC_FUNCPTRS
2d281745 KZ	63	# define FDPIC_FUNCPTRS 0x0080000
2d281745 KZ	64	#endif
f29a3d18	65	#ifndef MMAP_PAGE_ZERO
2d281745 KZ	66	# define MMAP_PAGE_ZERO 0x0100000
2d281745 KZ	67	#endif
f29a3d18	68	#ifndef ADDR_COMPAT_LAYOUT
2d281745 KZ	69	# define ADDR_COMPAT_LAYOUT 0x0200000
2d281745 KZ	70	#endif
f29a3d18	71	#ifndef READ_IMPLIES_EXEC
2d281745 KZ	72	# define READ_IMPLIES_EXEC 0x0400000
2d281745 KZ	73	#endif
f29a3d18	74	#ifndef ADDR_LIMIT_32BIT
2d281745 KZ	75	# define ADDR_LIMIT_32BIT 0x0800000
2d281745 KZ	76	#endif
f29a3d18	77	#ifndef SHORT_INODE
2d281745 KZ	78	# define SHORT_INODE 0x1000000
2d281745 KZ	79	#endif
f29a3d18	80	#ifndef WHOLE_SECONDS
2d281745 KZ	81	# define WHOLE_SECONDS 0x2000000
2d281745 KZ	82	#endif
f29a3d18	83	#ifndef STICKY_TIMEOUTS
2d281745 KZ	84	# define STICKY_TIMEOUTS 0x4000000
2d281745 KZ	85	#endif
f29a3d18	86	#ifndef ADDR_LIMIT_3GB
2d281745 KZ	87	# define ADDR_LIMIT_3GB 0x8000000
	88	#endif
	89
8b3a46d2 KZ	90	static void __attribute__((__noreturn__))
	91	show_help(void)
	92	{
69d00b75 SK	93	fputs(USAGE_HEADER, stdout);
	94	printf(_(" %s%s [options] [program [program arguments]]\n"),
	95	program_invocation_short_name,
b7fcd7ab	96	!strcmp(program_invocation_short_name, "setarch") ? " <arch>" : "");
8b3a46d2	97
69d00b75 SK	98	fputs(USAGE_OPTIONS, stdout);
	99	fputs(_(" -v, --verbose says what options are being switched on\n"), stdout);
	100	fputs(_(" -R, --addr-no-randomize disables randomization of the virtual address space\n"), stdout);
	101	fputs(_(" -F, --fdpic-funcptrs makes function pointers point to descriptors\n"), stdout);
	102	fputs(_(" -Z, --mmap-page-zero turns on MMAP_PAGE_ZERO\n"), stdout);
	103	fputs(_(" -L, --addr-compat-layout changes the way virtual memory is allocated\n"), stdout);
	104	fputs(_(" -X, --read-implies-exec turns on READ_IMPLIES_EXEC\n"), stdout);
	105	fputs(_(" -B, --32bit turns on ADDR_LIMIT_32BIT\n"), stdout);
	106	fputs(_(" -I, --short-inode turns on SHORT_INODE\n"), stdout);
	107	fputs(_(" -S, --whole-seconds turns on WHOLE_SECONDS\n"), stdout);
	108	fputs(_(" -T, --sticky-timeouts turns on STICKY_TIMEOUTS\n"), stdout);
	109	fputs(_(" -3, --3gb limits the used address space to a maximum of 3 GB\n"), stdout);
	110	fputs(_(" --4gb ignored (for backward compatibility only)\n"), stdout);
	111	fputs(_(" --uname-2.6 turns on UNAME26\n"), stdout);
	112	fputs(_(" --list list settable architectures, and exit\n"), stdout);
b7fcd7ab	113
69d00b75 SK	114	fputs(USAGE_SEPARATOR, stdout);
	115	fputs(USAGE_HELP, stdout);
	116	fputs(USAGE_VERSION, stdout);
b7fcd7ab	117	printf(USAGE_MAN_TAIL("setarch(8)"));
70eebc40	118
8b3a46d2 KZ	119	exit(EXIT_SUCCESS);
	120	}
	121
	122	static void __attribute__((__noreturn__))
	123	show_usage(const char *s)
	124	{
edf1cf0a SK	125	if (s)
	126	errx(EXIT_FAILURE, _("%s\nTry `%s --help' for more information."), s, program_invocation_short_name);
	127	else
	128	errx(EXIT_FAILURE, _("Try `%s --help' for more information."), program_invocation_short_name);
8b3a46d2 KZ	129	}
8b3a46d2 KZ	130
b446402b SK	131	static void __attribute__((__noreturn__))
	132	show_version(void)
	133	{
	134	printf(UTIL_LINUX_VERSION);
	135	exit(EXIT_SUCCESS);
	136	}
8df90dec	137
5b90f817	138	static int
5d1607e2	139	set_arch(const char *pers, unsigned long options, int list)
8b3a46d2 KZ	140	{
	141	struct utsname un;
	142	int i;
cfe2d249	143	unsigned long pers_value;
8b3a46d2 KZ	144
	145	struct {
	146	int perval;
	147	const char target_arch, result_arch;
	148	} transitions[] = {
f6eb160c	149	{UNAME26, "uname26", NULL},
8b3a46d2 KZ	150	{PER_LINUX32, "linux32", NULL},
	151	{PER_LINUX, "linux64", NULL},
	152	#if defined(__powerpc__) \|\| defined(__powerpc64__)
95bf26fd	153	#ifdef __BIG_ENDIAN__
8b3a46d2 KZ	154	{PER_LINUX32, "ppc32", "ppc"},
	155	{PER_LINUX32, "ppc", "ppc"},
	156	{PER_LINUX, "ppc64", "ppc64"},
	157	{PER_LINUX, "ppc64pseries", "ppc64"},
	158	{PER_LINUX, "ppc64iseries", "ppc64"},
95bf26fd AB	159	#else
	160	{PER_LINUX32, "ppc32le", "ppcle"},
	161	{PER_LINUX32, "ppcle", "ppcle"},
	162	{PER_LINUX, "ppc64le", "ppc64le"},
	163	#endif
8b3a46d2 KZ	164	#endif
	165	#if defined(__x86_64__) \|\| defined(__i386__) \|\| defined(__ia64__)
	166	{PER_LINUX32, "i386", "i386"},
	167	{PER_LINUX32, "i486", "i386"},
	168	{PER_LINUX32, "i586", "i386"},
	169	{PER_LINUX32, "i686", "i386"},
	170	{PER_LINUX32, "athlon", "i386"},
	171	#endif
	172	#if defined(__x86_64__) \|\| defined(__i386__)
	173	{PER_LINUX, "x86_64", "x86_64"},
	174	#endif
	175	#if defined(__ia64__) \|\| defined(__i386__)
	176	{PER_LINUX, "ia64", "ia64"},
	177	#endif
782e198d	178	#if defined(__hppa__)
eeadb4f4 KZ	179	{PER_LINUX32, "parisc32", "parisc"},
eeadb4f4 KZ	180	{PER_LINUX32, "parisc", "parisc"},
782e198d LJ	181	{PER_LINUX, "parisc64", "parisc64"},
782e198d LJ	182	#endif
8b3a46d2 KZ	183	#if defined(__s390x__) \|\| defined(__s390__)
	184	{PER_LINUX32, "s390", "s390"},
	185	{PER_LINUX, "s390x", "s390x"},
	186	#endif
	187	#if defined(__sparc64__) \|\| defined(__sparc__)
	188	{PER_LINUX32, "sparc", "sparc"},
ee7401c5	189	{PER_LINUX32, "sparc32bash", "sparc"},
8b3a46d2 KZ	190	{PER_LINUX32, "sparc32", "sparc"},
	191	{PER_LINUX, "sparc64", "sparc64"},
	192	#endif
	193	#if defined(__mips64__) \|\| defined(__mips__)
	194	{PER_LINUX32, "mips32", "mips"},
	195	{PER_LINUX32, "mips", "mips"},
	196	{PER_LINUX, "mips64", "mips64"},
9e19737a BC	197	#endif
	198	#if defined(__alpha__)
	199	{PER_LINUX, "alpha", "alpha"},
adf88e66 OF	200	{PER_LINUX, "alphaev5", "alpha"},
	201	{PER_LINUX, "alphaev56", "alpha"},
	202	{PER_LINUX, "alphaev6", "alpha"},
	203	{PER_LINUX, "alphaev67", "alpha"},
8b3a46d2 KZ	204	#endif
	205	{-1, NULL, NULL}
	206	};
	207
5d1607e2 SK	208	if (list) {
	209	for(i = 0; transitions[i].target_arch != NULL; i++)
	210	printf("%s\n", transitions[i].target_arch);
	211	return 0;
	212	}
	213
8b3a46d2 KZ	214	for(i = 0; transitions[i].perval >= 0; i++)
	215	if(!strcmp(pers, transitions[i].target_arch))
	216	break;
	217
	218	if(transitions[i].perval < 0)
c60103a9	219	errx(EXIT_FAILURE, _("%s: Unrecognized architecture"), pers);
8b3a46d2 KZ	220
8b3a46d2 KZ	221	pers_value = transitions[i].perval \| options;
cfe2d249	222	if (set_pers(pers_value) == -EINVAL)
8b3a46d2 KZ	223	return 1;
	224
	225	uname(&un);
	226	if(transitions[i].result_arch &&
	227	strcmp(un.machine, transitions[i].result_arch))
	228	{
	229	if(strcmp(transitions[i].result_arch, "i386")
	230	\|\| (strcmp(un.machine, "i486")
	231	&& strcmp(un.machine, "i586")
	232	&& strcmp(un.machine, "i686")
	233	&& strcmp(un.machine, "athlon")))
c60103a9	234	errx(EXIT_FAILURE, _("%s: Unrecognized architecture"), pers);
8b3a46d2 KZ	235	}
	236
	237	return 0;
	238	}
	239
	240	int main(int argc, char *argv[])
	241	{
	242	const char *p;
	243	unsigned long options = 0;
	244	int verbose = 0;
8df90dec	245	int c;
8b3a46d2	246
74562799 SK	247	/* Options --3gb and --4gb are for compatibitity with an old Debian setarch
	248	implementation. */
	249	static const struct option longopts[] =
	250	{
	251	{ "help", 0, 0, 'h' },
b446402b	252	{ "version", 0, 0, 'V' },
74562799 SK	253	{ "verbose", 0, 0, 'v' },
	254	{ "addr-no-randomize", 0, 0, 'R' },
	255	{ "fdpic-funcptrs", 0, 0, 'F' },
	256	{ "mmap-page-zero", 0, 0, 'Z' },
	257	{ "addr-compat-layout", 0, 0, 'L' },
	258	{ "read-implies-exec", 0, 0, 'X' },
	259	{ "32bit", 0, 0, 'B' },
	260	{ "short-inode", 0, 0, 'I' },
	261	{ "whole-seconds", 0, 0, 'S' },
	262	{ "sticky-timeouts", 0, 0, 'T' },
	263	{ "3gb", 0, 0, '3' },
	264	{ "4gb", 0, 0, OPT_4GB },
	265	{ "uname-2.6", 0, 0, OPT_UNAME26 },
	266	{ NULL, 0, 0, 0 }
	267	};
	268
a5b47e0a KZ	269	setlocale(LC_ALL, "");
	270	bindtextdomain(PACKAGE, LOCALEDIR);
	271	textdomain(PACKAGE);
efb8854f	272	atexit(close_stdout);
a5b47e0a	273
8b3a46d2	274	if (argc < 1)
a5b47e0a	275	show_usage(_("Not enough arguments"));
8b3a46d2 KZ	276
	277	p = program_invocation_short_name;
	278	if (!strcmp(p, "setarch")) {
8b3a46d2 KZ	279	argc--;
8b3a46d2 KZ	280	if (argc < 1)
a5b47e0a	281	show_usage(_("Not enough arguments"));
50f32c36 SK	282	p = argv[1];
	283	argv[1] = argv[0]; /* for getopt_long() to get the program name */
	284	argv++;
8b3a46d2 KZ	285	if (!strcmp(p, "-h") \|\| !strcmp(p, "--help"))
8b3a46d2 KZ	286	show_help();
b446402b SK	287	else if (!strcmp(p, "-V") \|\| !strcmp(p, "--version"))
b446402b SK	288	show_version();
5d1607e2 SK	289	else if (!strcmp(p, "--list")) {
	290	set_arch(argv[0], 0L, 1);
	291	return EXIT_SUCCESS;
	292	}
8b3a46d2	293	}
ee7401c5 DG	294	#if defined(__sparc64__) \|\| defined(__sparc__)
ee7401c5 DG	295	if (!strcmp(p, "sparc32bash")) {
5d1607e2	296	if (set_arch(p, 0L, 0))
c60103a9	297	err(EXIT_FAILURE, _("Failed to set personality to %s"), p);
ee7401c5	298	execl("/bin/bash", NULL);
07ff972e	299	err(EXIT_FAILURE, _("failed to execute %s"), "/bin/bash");
ee7401c5 DG	300	}
ee7401c5 DG	301	#endif
8b3a46d2	302
b446402b	303	while ((c = getopt_long(argc, argv, "+hVv3BFILRSTXZ", longopts, NULL)) != -1) {
8df90dec KZ	304	switch (c) {
8df90dec KZ	305	case 'h':
8b3a46d2	306	show_help();
8df90dec	307	break;
b446402b SK	308	case 'V':
	309	show_version();
	310	break;
8df90dec KZ	311	case 'v':
	312	verbose = 1;
	313	break;
	314	case 'R':
	315	turn_on(ADDR_NO_RANDOMIZE, options);
	316	break;
	317	case 'F':
	318	turn_on(FDPIC_FUNCPTRS, options);
	319	break;
	320	case 'Z':
	321	turn_on(MMAP_PAGE_ZERO, options);
	322	break;
	323	case 'L':
	324	turn_on(ADDR_COMPAT_LAYOUT, options);
	325	break;
	326	case 'X':
	327	turn_on(READ_IMPLIES_EXEC, options);
	328	break;
	329	case 'B':
	330	turn_on(ADDR_LIMIT_32BIT, options);
	331	break;
	332	case 'I':
	333	turn_on(SHORT_INODE, options);
	334	break;
	335	case 'S':
	336	turn_on(WHOLE_SECONDS, options);
	337	break;
	338	case 'T':
	339	turn_on(STICKY_TIMEOUTS, options);
	340	break;
	341	case '3':
	342	turn_on(ADDR_LIMIT_3GB, options);
	343	break;
	344	case OPT_4GB: /* just ignore this one */
	345	break;
70eebc40 BH	346	case OPT_UNAME26:
	347	turn_on(UNAME26, options);
	348	break;
edf1cf0a SK	349	default:
edf1cf0a SK	350	show_usage(NULL);
8b3a46d2 KZ	351	}
	352	}
	353
8df90dec KZ	354	argc -= optind;
	355	argv += optind;
	356
5d1607e2	357	if (set_arch(p, options, 0))
c60103a9	358	err(EXIT_FAILURE, _("Failed to set personality to %s"), p);
8b3a46d2	359
34c265f0 RM	360	/* flush all output streams before exec */
	361	fflush(NULL);
	362
8b3a46d2 KZ	363	if (!argc) {
8b3a46d2 KZ	364	execl("/bin/sh", "-sh", NULL);
07ff972e	365	err(EXIT_FAILURE, _("failed to execute %s"), "/bin/sh");
8b3a46d2 KZ	366	}
	367
	368	execvp(argv[0], argv);
c60103a9	369	err(EXIT_FAILURE, "%s", argv[0]);
8b3a46d2 KZ	370	return EXIT_FAILURE;
8b3a46d2 KZ	371	}