* sparc32 util by Jakub Jelinek (1998, 1999)
*/
-#include <syscall.h>
-#include <linux/personality.h>
+#include <sys/personality.h>
#include <unistd.h>
#include <stdio.h>
#include <string.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
-};
+#ifndef HAVE_PERSONALITY
+# include <syscall.h>
+# define personality(pers) ((long)syscall(SYS_personality, pers))
+#endif
#define turn_on(_flag, _opts) \
do { \
printf(_("Switching on %s.\n"), #_flag); \
} while(0)
-
-#if !HAVE_DECL_UNAME26
+#ifndef UNAME26
# define UNAME26 0x0020000
#endif
-#if !HAVE_DECL_ADDR_NO_RANDOMIZE
+#ifndef ADDR_NO_RANDOMIZE
# define ADDR_NO_RANDOMIZE 0x0040000
#endif
-#if !HAVE_DECL_FDPIC_FUNCPTRS
+#ifndef FDPIC_FUNCPTRS
# define FDPIC_FUNCPTRS 0x0080000
#endif
-#if !HAVE_DECL_MMAP_PAGE_ZERO
+#ifndef MMAP_PAGE_ZERO
# define MMAP_PAGE_ZERO 0x0100000
#endif
-#if !HAVE_DECL_ADDR_COMPAT_LAYOUT
+#ifndef ADDR_COMPAT_LAYOUT
# define ADDR_COMPAT_LAYOUT 0x0200000
#endif
-#if !HAVE_DECL_READ_IMPLIES_EXEC
+#ifndef READ_IMPLIES_EXEC
# define READ_IMPLIES_EXEC 0x0400000
#endif
-#if !HAVE_DECL_ADDR_LIMIT_32BIT
+#ifndef ADDR_LIMIT_32BIT
# define ADDR_LIMIT_32BIT 0x0800000
#endif
-#if !HAVE_DECL_SHORT_INODE
+#ifndef SHORT_INODE
# define SHORT_INODE 0x1000000
#endif
-#if !HAVE_DECL_WHOLE_SECONDS
+#ifndef WHOLE_SECONDS
# define WHOLE_SECONDS 0x2000000
#endif
-#if !HAVE_DECL_STICKY_TIMEOUTS
+#ifndef STICKY_TIMEOUTS
# define STICKY_TIMEOUTS 0x4000000
#endif
-#if !HAVE_DECL_ADDR_LIMIT_3GB
+#ifndef ADDR_LIMIT_3GB
# define ADDR_LIMIT_3GB 0x8000000
#endif
-static void __attribute__((__noreturn__))
-show_help(void)
-{
- printf(USAGE_HEADER);
- printf(_(" %s%s [options] [program [program arguments]]\n"),
- program_invocation_short_name,
- !strcmp(program_invocation_short_name, "setarch") ? " <arch>" : "");
-
- printf(USAGE_OPTIONS);
- printf(_(
- " -v, --verbose says what options are being switched on\n"
- " -R, --addr-no-randomize disables randomization of the virtual address space\n"
- " -F, --fdpic-funcptrs makes function pointers point to descriptors\n"
- " -Z, --mmap-page-zero turns on MMAP_PAGE_ZERO\n"
- " -L, --addr-compat-layout changes the way virtual memory is allocated\n"
- " -X, --read-implies-exec turns on READ_IMPLIES_EXEC\n"
- " -B, --32bit turns on ADDR_LIMIT_32BIT\n"
- " -I, --short-inode turns on SHORT_INODE\n"
- " -S, --whole-seconds turns on WHOLE_SECONDS\n"
- " -T, --sticky-timeouts turns on STICKY_TIMEOUTS\n"
- " -3, --3gb limits the used address space to a maximum of 3 GB\n"
- " --4gb ignored (for backward compatibility only)\n"
- " --uname-2.6 turns on UNAME26\n"));
-
- printf(USAGE_SEPARATOR);
- printf(USAGE_HELP);
- printf(USAGE_VERSION);
- printf(USAGE_MAN_TAIL("setarch(8)"));
-
- exit(EXIT_SUCCESS);
-}
-static void __attribute__((__noreturn__))
-show_usage(const char *s)
-{
- errx(EXIT_FAILURE, _("%s\nTry `%s --help' for more information."), s, program_invocation_short_name);
-}
+struct arch_domain {
+ int perval; /* PER_* */
+ const char *target_arch;
+ const char *result_arch;
+};
-static void __attribute__((__noreturn__))
-show_version(void)
+
+static void __attribute__((__noreturn__)) usage(int archwrapper)
{
- printf(UTIL_LINUX_VERSION);
- exit(EXIT_SUCCESS);
+ fputs(USAGE_HEADER, stdout);
+ if (!archwrapper)
+ printf(_(" %s [<arch>] [options] [<program> [<argument>...]]\n"), program_invocation_short_name);
+ else
+ printf(_(" %s [options] [<program> [<argument>...]]\n"), program_invocation_short_name);
+
+ fputs(USAGE_SEPARATOR, stdout);
+ fputs(_("Change the reported architecture and set personality flags.\n"), stdout);
+
+ fputs(USAGE_OPTIONS, stdout);
+ fputs(_(" -B, --32bit turns on ADDR_LIMIT_32BIT\n"), stdout);
+ fputs(_(" -F, --fdpic-funcptrs makes function pointers point to descriptors\n"), stdout);
+ fputs(_(" -I, --short-inode turns on SHORT_INODE\n"), stdout);
+ fputs(_(" -L, --addr-compat-layout changes the way virtual memory is allocated\n"), stdout);
+ fputs(_(" -R, --addr-no-randomize disables randomization of the virtual address space\n"), stdout);
+ fputs(_(" -S, --whole-seconds turns on WHOLE_SECONDS\n"), stdout);
+ fputs(_(" -T, --sticky-timeouts turns on STICKY_TIMEOUTS\n"), stdout);
+ fputs(_(" -X, --read-implies-exec turns on READ_IMPLIES_EXEC\n"), stdout);
+ fputs(_(" -Z, --mmap-page-zero turns on MMAP_PAGE_ZERO\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(_(" -v, --verbose say what options are being switched on\n"), stdout);
+
+ if (!archwrapper)
+ fputs(_(" --list list settable architectures, and exit\n"), stdout);
+
+ fputs(USAGE_SEPARATOR, stdout);
+ printf(USAGE_HELP_OPTIONS(26));
+ printf(USAGE_MAN_TAIL("setarch(8)"));
+
+ exit(EXIT_SUCCESS);
}
-int set_arch(const char *pers, unsigned long options)
+/*
+ * Returns inilialized list of all available execution domains.
+ */
+static struct arch_domain *init_arch_domains(void)
{
- struct utsname un;
- int i;
- unsigned long pers_value;
-
- struct {
- int perval;
- const char *target_arch, *result_arch;
- } transitions[] = {
- {PER_LINUX32, "linux32", NULL},
- {PER_LINUX, "linux64", NULL},
+ static struct utsname un;
+ size_t i;
+
+ static struct arch_domain transitions[] =
+ {
+ {UNAME26, "uname26", NULL},
+ {PER_LINUX32, "linux32", NULL},
+ {PER_LINUX, "linux64", NULL},
#if defined(__powerpc__) || defined(__powerpc64__)
- {PER_LINUX32, "ppc32", "ppc"},
- {PER_LINUX32, "ppc", "ppc"},
- {PER_LINUX, "ppc64", "ppc64"},
- {PER_LINUX, "ppc64pseries", "ppc64"},
- {PER_LINUX, "ppc64iseries", "ppc64"},
+# 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, "ppc32", "ppcle"},
+ {PER_LINUX32, "ppc", "ppcle"},
+ {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"},
+ {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"},
+ {PER_LINUX, "x86_64", "x86_64"},
#endif
#if defined(__ia64__) || defined(__i386__)
- {PER_LINUX, "ia64", "ia64"},
+ {PER_LINUX, "ia64", "ia64"},
#endif
#if defined(__hppa__)
- {PER_LINUX32, "parisc32", "parisc"},
- {PER_LINUX32, "parisc", "parisc"},
- {PER_LINUX, "parisc64", "parisc64"},
+ {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"},
+ {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"},
+ {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"},
+ {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"},
+ {PER_LINUX, "alpha", "alpha"},
+ {PER_LINUX, "alphaev5", "alpha"},
+ {PER_LINUX, "alphaev56", "alpha"},
+ {PER_LINUX, "alphaev6", "alpha"},
+ {PER_LINUX, "alphaev67", "alpha"},
#endif
- {-1, NULL, NULL}
- };
-
- 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;
+#if defined(__e2k__)
+ {PER_LINUX, "e2k", "e2k"},
+ {PER_LINUX, "e2kv4", "e2k"},
+ {PER_LINUX, "e2kv5", "e2k"},
+ {PER_LINUX, "e2kv6", "e2k"},
+ {PER_LINUX, "e2k4c", "e2k"},
+ {PER_LINUX, "e2k8c", "e2k"},
+ {PER_LINUX, "e2k1cp", "e2k"},
+ {PER_LINUX, "e2k8c2", "e2k"},
+ {PER_LINUX, "e2k12c", "e2k"},
+ {PER_LINUX, "e2k16c", "e2k"},
+ {PER_LINUX, "e2k2c3", "e2k"},
+#endif
+ /* place holder, will be filled up at runtime */
+ {-1, NULL, NULL},
+ {-1, NULL, NULL}
+ };
+
+ /* Add the trivial transition {PER_LINUX, machine, machine} if no
+ * such target_arch is hardcoded yet. */
+ uname(&un);
+ for (i = 0; transitions[i].perval >= 0; i++)
+ if (!strcmp(un.machine, transitions[i].target_arch))
+ break;
+ if (transitions[i].perval < 0) {
+ unsigned long wrdsz = CHAR_BIT * sizeof(void *);
+ if (wrdsz == 32 || wrdsz == 64) {
+ /* fill up the place holder */
+ transitions[i].perval = wrdsz == 32 ? PER_LINUX32 : PER_LINUX;
+ transitions[i].target_arch = un.machine;
+ transitions[i].result_arch = un.machine;
+ }
+ }
+
+ return transitions;
+}
+
+/*
+ * List all execution domains from transitions
+ */
+static void list_arch_domains(struct arch_domain *doms)
+{
+ struct arch_domain *d;
+
+ for (d = doms; d->target_arch != NULL; d++)
+ printf("%s\n", d->target_arch);
+}
+
+static struct arch_domain *get_arch_domain(struct arch_domain *doms, const char *pers)
+{
+ struct arch_domain *d;
+
+ for (d = doms; d && d->perval >= 0; d++) {
+ if (!strcmp(pers, d->target_arch))
+ break;
+ }
+
+ return !d || d->perval < 0 ? NULL : d;
+}
+
+static void verify_arch_domain(struct arch_domain *dom, const char *wanted)
+{
+ struct utsname un;
+
+ if (!dom || !dom->result_arch)
+ return;
+
+ uname(&un);
+ if (strcmp(un.machine, dom->result_arch)) {
+ if (strcmp(dom->result_arch, "i386")
+ || (strcmp(un.machine, "i486")
+ && strcmp(un.machine, "i586")
+ && strcmp(un.machine, "i686")
+ && strcmp(un.machine, "athlon")))
+ errx(EXIT_FAILURE, _("Kernel cannot set architecture to %s"), wanted);
+ }
}
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")) {
- argv++;
- argc--;
- if (argc < 1)
- show_usage(_("Not enough arguments"));
- p = argv[0];
- argv[0] = argv[-1]; /* for getopt_long() to get the program name */
- if (!strcmp(p, "-h") || !strcmp(p, "--help"))
- show_help();
- else if (!strcmp(p, "-V") || !strcmp(p, "--version"))
- show_version();
- }
- #if defined(__sparc64__) || defined(__sparc__)
- if (!strcmp(p, "sparc32bash")) {
- if (set_arch(p, 0L))
- err(EXIT_FAILURE, _("Failed to set personality to %s"), p);
- execl("/bin/bash", NULL);
- err(EXIT_FAILURE, "/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;
- }
- }
-
- argc -= optind;
- argv += optind;
-
- if (set_arch(p, options))
- err(EXIT_FAILURE, _("Failed to set personality to %s"), p);
-
- if (!argc) {
- execl("/bin/sh", "-sh", NULL);
- err(EXIT_FAILURE, "/bin/sh");
- }
-
- execvp(argv[0], argv);
- err(EXIT_FAILURE, "%s", argv[0]);
- return EXIT_FAILURE;
+ const char *arch = NULL;
+ unsigned long options = 0;
+ int verbose = 0;
+ int archwrapper;
+ int c;
+ struct arch_domain *doms, *target = NULL;
+ unsigned long pers_value = 0;
+ char *shell = NULL, *shell_arg = NULL;
+
+ /* Options without equivalent short options */
+ enum {
+ OPT_4GB = CHAR_MAX + 1,
+ OPT_UNAME26,
+ OPT_LIST
+ };
+
+ /* Options --3gb and --4gb are for compatibility with an old
+ * Debian setarch implementation. */
+ static const struct option longopts[] = {
+ {"help", no_argument, NULL, 'h'},
+ {"version", no_argument, NULL, 'V'},
+ {"verbose", no_argument, NULL, 'v'},
+ {"addr-no-randomize", no_argument, NULL, 'R'},
+ {"fdpic-funcptrs", no_argument, NULL, 'F'},
+ {"mmap-page-zero", no_argument, NULL, 'Z'},
+ {"addr-compat-layout", no_argument, NULL, 'L'},
+ {"read-implies-exec", no_argument, NULL, 'X'},
+ {"32bit", no_argument, NULL, 'B'},
+ {"short-inode", no_argument, NULL, 'I'},
+ {"whole-seconds", no_argument, NULL, 'S'},
+ {"sticky-timeouts", no_argument, NULL, 'T'},
+ {"3gb", no_argument, NULL, '3'},
+ {"4gb", no_argument, NULL, OPT_4GB},
+ {"uname-2.6", no_argument, NULL, OPT_UNAME26},
+ {"list", no_argument, NULL, OPT_LIST},
+ {NULL, 0, NULL, 0}
+ };
+
+ setlocale(LC_ALL, "");
+ bindtextdomain(PACKAGE, LOCALEDIR);
+ textdomain(PACKAGE);
+ close_stdout_atexit();
+
+ if (argc < 1) {
+ warnx(_("Not enough arguments"));
+ errtryhelp(EXIT_FAILURE);
+ }
+ archwrapper = strcmp(program_invocation_short_name, "setarch") != 0;
+ if (archwrapper) {
+ arch = program_invocation_short_name; /* symlinks to setarch */
+
+ /* Don't use ifdef sparc here, we get "Unrecognized architecture"
+ * error message later if necessary */
+ if (strcmp(arch, "sparc32bash") == 0) {
+ shell = "/bin/bash";
+ shell_arg = "";
+ goto set_arch;
+ }
+ } else {
+ if (1 < argc && *argv[1] != '-') {
+ arch = argv[1];
+ argv[1] = argv[0]; /* for getopt_long() to get the program name */
+ argv++;
+ argc--;
+ }
+ }
+
+ while ((c = getopt_long(argc, argv, "+hVv3BFILRSTXZ", longopts, NULL)) != -1) {
+ switch (c) {
+ 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;
+ case OPT_LIST:
+ if (!archwrapper) {
+ list_arch_domains(init_arch_domains());
+ return EXIT_SUCCESS;
+ } else
+ warnx(_("unrecognized option '--list'"));
+ /* fallthrough */
+
+ default:
+ errtryhelp(EXIT_FAILURE);
+ case 'h':
+ usage(archwrapper);
+ case 'V':
+ print_version(EXIT_SUCCESS);
+ }
+ }
+
+ if (!arch && !options)
+ errx(EXIT_FAILURE, _("no architecture argument or personality flags specified"));
+
+ argc -= optind;
+ argv += optind;
+
+set_arch:
+ /* get execution domain (architecture) */
+ if (arch) {
+ doms = init_arch_domains();
+ target = get_arch_domain(doms, arch);
+
+ if (!target)
+ errx(EXIT_FAILURE, _("%s: Unrecognized architecture"), arch);
+ pers_value = target->perval;
+ }
+
+ /* add personality flags */
+ pers_value |= options;
+
+ /* call kernel */
+ if (personality(pers_value) < 0) {
+ /*
+ * Depending on architecture and kernel version, personality
+ * syscall is either capable or incapable of returning an error.
+ * If the return value is not an error, then it's the previous
+ * personality value, which can be an arbitrary value
+ * undistinguishable from an error value.
+ * To make things clear, a second call is needed.
+ */
+ if (personality(pers_value) < 0)
+ err(EXIT_FAILURE, _("failed to set personality to %s"), arch);
+ }
+
+ /* make sure architecture is set as expected */
+ if (arch)
+ verify_arch_domain(target, arch);
+
+ if (!argc) {
+ shell = "/bin/sh";
+ shell_arg = "-sh";
+ }
+ if (verbose) {
+ printf(_("Execute command `%s'.\n"), shell ? shell : argv[0]);
+ /* flush all output streams before exec */
+ fflush(NULL);
+ }
+
+ /* Execute shell */
+ if (shell) {
+ execl(shell, shell_arg, NULL);
+ errexec(shell);
+ }
+
+ /* Execute on command line specified command */
+ execvp(argv[0], argv);
+ errexec(argv[0]);
}
projects / thirdparty / util-linux.git / blobdiff