28759d0e95
<sys/sysmacros.h> is linux-only FreeBSD defines makedev in sys/types.h already included in the libbb.h. Signed-off-by: Alex Samorukov <samm@os2.kiev.ua> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
89 lines
2.3 KiB
C
89 lines
2.3 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* mknod implementation for busybox
|
|
*
|
|
* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
|
|
*
|
|
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
|
|
*/
|
|
//config:config MKNOD
|
|
//config: bool "mknod (4.5 kb)"
|
|
//config: default y
|
|
//config: help
|
|
//config: mknod is used to create FIFOs or block/character special
|
|
//config: files with the specified names.
|
|
|
|
//applet:IF_MKNOD(APPLET_NOEXEC(mknod, mknod, BB_DIR_BIN, BB_SUID_DROP, mknod))
|
|
|
|
//kbuild:lib-$(CONFIG_MKNOD) += mknod.o
|
|
|
|
/* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */
|
|
|
|
//usage:#define mknod_trivial_usage
|
|
//usage: "[-m MODE] " IF_SELINUX("[-Z] ") "NAME TYPE [MAJOR MINOR]"
|
|
//usage:#define mknod_full_usage "\n\n"
|
|
//usage: "Create a special file (block, character, or pipe)\n"
|
|
//usage: "\n -m MODE Creation mode (default a=rw)"
|
|
//usage: IF_SELINUX(
|
|
//usage: "\n -Z Set security context"
|
|
//usage: )
|
|
//usage: "\nTYPE:"
|
|
//usage: "\n b Block device"
|
|
//usage: "\n c or u Character device"
|
|
//usage: "\n p Named pipe (MAJOR MINOR must be omitted)"
|
|
//usage:
|
|
//usage:#define mknod_example_usage
|
|
//usage: "$ mknod /dev/fd0 b 2 0\n"
|
|
//usage: "$ mknod -m 644 /tmp/pipe p\n"
|
|
|
|
#ifdef __linux__
|
|
# include <sys/sysmacros.h> // For makedev
|
|
#endif
|
|
|
|
#include "libbb.h"
|
|
#include "libcoreutils/coreutils.h"
|
|
|
|
/* This is a NOEXEC applet. Be very careful! */
|
|
|
|
static const char modes_chars[] ALIGN1 = { 'p', 'c', 'u', 'b', 0, 1, 1, 2 };
|
|
static const mode_t modes_cubp[] = { S_IFIFO, S_IFCHR, S_IFBLK };
|
|
|
|
int mknod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int mknod_main(int argc UNUSED_PARAM, char **argv)
|
|
{
|
|
mode_t mode;
|
|
dev_t dev;
|
|
const char *type, *arg;
|
|
|
|
mode = getopt_mk_fifo_nod(argv);
|
|
argv += optind;
|
|
//argc -= optind;
|
|
|
|
if (!argv[0] || !argv[1])
|
|
bb_show_usage();
|
|
type = strchr(modes_chars, argv[1][0]);
|
|
if (!type)
|
|
bb_show_usage();
|
|
|
|
mode |= modes_cubp[(int)(type[4])];
|
|
|
|
dev = 0;
|
|
arg = argv[2];
|
|
if (*type != 'p') {
|
|
if (!argv[2] || !argv[3])
|
|
bb_show_usage();
|
|
/* Autodetect what the system supports; these macros should
|
|
* optimize out to two constants. */
|
|
dev = makedev(xatoul_range(argv[2], 0, major(UINT_MAX)),
|
|
xatoul_range(argv[3], 0, minor(UINT_MAX)));
|
|
arg = argv[4];
|
|
}
|
|
if (arg)
|
|
bb_show_usage();
|
|
|
|
if (mknod(argv[0], mode, dev) != 0) {
|
|
bb_simple_perror_msg_and_die(argv[0]);
|
|
}
|
|
return EXIT_SUCCESS;
|
|
}
|