/* $NetBSD: mknod.c,v 1.39 2009/02/13 01:37:23 lukem Exp $ */
/*-
* Copyright (c) 1998, 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#if 0
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1998\
The NetBSD Foundation, Inc. All rights reserved.");
__RCSID("$NetBSD: mknod.c,v 1.39 2009/02/13 01:37:23 lukem Exp $");
#endif /* not lint */
#endif
#include <rtems.h>
#include <rtems/shell.h>
#include <rtems/shellconfig.h>
#define __need_getopt_newlib
#include <getopt.h>
#include <sys/cdefs.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/param.h>
#if !HAVE_NBTOOL_CONFIG_H && defined(KERN_DRIVERS)
#include <sys/sysctl.h>
#endif
#include "err.h"
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <pwd.h>
#include <grp.h>
#include <string.h>
#include <ctype.h>
#include "mknod-pack_dev.h"
#include <setjmp.h>
typedef struct {
int exit_code;
jmp_buf exit_jmp;
} rtems_shell_mknod_globals;
#define exit_jump &(globals->exit_jmp)
#define exit(ec) rtems_shell_mknod_exit(globals, ec)
static int gid_name(const char *, gid_t *);
static portdev_t callPack(rtems_shell_mknod_globals* globals,
pack_t *, int, u_long *);
static int main_mknod(rtems_shell_mknod_globals*, int, char *[]);
static void usage(rtems_shell_mknod_globals* );
static void
rtems_shell_mknod_exit (rtems_shell_mknod_globals* globals, int code)
{
globals->exit_code = code;
longjmp (globals->exit_jmp, 1);
}
#include "mknod-pack_dev.c"
static int
rtems_shell_main_mknod(int argc, char *argv[])
{
rtems_shell_mknod_globals mknod_globals;
rtems_shell_mknod_globals* globals = &mknod_globals;
memset (globals, 0, sizeof (mknod_globals));
mknod_globals.exit_code = 1;
if (setjmp (mknod_globals.exit_jmp) == 0)
return main_mknod (globals, argc, argv);
return mknod_globals.exit_code;
}
#define getprogname() "mknod"
#ifdef KERN_DRIVERS
#error invalid for RTEMS
static struct kinfo_drivers *kern_drivers;
static int num_drivers;
static void get_device_info(void);
static void print_device_info(char **);
static int major_from_name(const char *, mode_t);
#endif
#define MAXARGS 3 /* 3 for bsdos, 2 for rest */
int
main_mknod(rtems_shell_mknod_globals* globals, int argc, char **argv)
{
char *name, *p;
mode_t mode;
portdev_t dev;
pack_t *pack;
u_long numbers[MAXARGS];
int n, ch, fifo, hasformat;
int r_flag = 0; /* force: delete existing entry */
#ifdef KERN_DRIVERS
int l_flag = 0; /* list device names and numbers */
int major;
#endif
#if RTEMS_REMOVED
void *modes = 0;
#endif
uid_t uid = -1;
gid_t gid = -1;
int rval;
struct getopt_data getopt_reent;
memset(&getopt_reent, 0, sizeof(getopt_data));
dev = 0;
fifo = hasformat = 0;
pack = pack_native;
#ifdef KERN_DRIVERS
while ((ch = getopt(argc, argv, "lrRF:g:m:u:")) != -1) {
#else
while ((ch = getopt_r(argc, argv, "rRF:g:m:u:", &getopt_reent)) != -1) {
#endif
switch (ch) {
#ifdef KERN_DRIVERS
case 'l':
l_flag = 1;
break;
#endif
case 'r':
r_flag = 1;
break;
case 'R':
r_flag = 2;
break;
case 'F':
pack = pack_find(getopt_reent.optarg);
if (pack == NULL)
errx(exit_jump, 1, "invalid format: %s", getopt_reent.optarg);
hasformat++;
break;
case 'g':
if (getopt_reent.optarg[0] == '#') {
gid = strtol(getopt_reent.optarg + 1, &p, 10);
if (*p == 0)
break;
}
if (gid_name(getopt_reent.optarg, &gid) == 0)
break;
gid = strtol(getopt_reent.optarg, &p, 10);
if (*p == 0)
break;
errx(exit_jump, 1, "%s: invalid group name", getopt_reent.optarg);
case 'm':
#if RTEMS_REMOVED
modes = setmode(getopt_reent.optarg);
if (modes == NULL)
#endif
err(exit_jump, 1, "Cannot set file mode `%s'", getopt_reent.optarg);
break;
case 'u':
if (getopt_reent.optarg[0] == '#') {
uid = strtol(getopt_reent.optarg + 1, &p, 10);
if (*p == 0)
break;
}
#if RTEMS_REMOVED
if (uid_from_user(getopt_reent.optarg, &uid) == 0)
break;
#endif
uid = strtol(getopt_reent.optarg, &p, 10);
if (*p == 0)
break;
errx(exit_jump, 1, "%s: invalid user name", getopt_reent.optarg);
default:
case '?':
usage(globals);
}
}
argc -= getopt_reent.optind;
argv += getopt_reent.optind;
#ifdef KERN_DRIVERS
if (l_flag) {
print_device_info(argv);
return 0;
}
#endif
if (argc < 2 || argc > 10)
usage(globals);
name = *argv;
argc--;
argv++;
umask(mode = umask(0));
mode = (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH) & ~mode;
if (argv[0][1] != '\0')
goto badtype;
switch (*argv[0]) {
case 'c':
mode |= S_IFCHR;
break;
case 'b':
mode |= S_IFBLK;
break;
case 'p':
if (hasformat)
errx(exit_jump, 1, "format is meaningless for fifos");
mode |= S_IFIFO;
fifo = 1;
break;
default:
badtype:
errx(exit_jump, 1, "node type must be 'b', 'c' or 'p'.");
}
argc--;
argv++;
if (fifo) {
if (argc != 0)
usage(globals);
} else {
if (argc < 1 || argc > MAXARGS)
usage(globals);
}
for (n = 0; n < argc; n++) {
errno = 0;
numbers[n] = strtoul(argv[n], &p, 0);
if (*p == 0 && errno == 0)
continue;
#ifdef KERN_DRIVERS
if (n == 0) {
major = major_from_name(argv[0], mode);
if (major != -1) {
numbers[0] = major;
continue;
}
if (!isdigit(*(unsigned char *)argv[0]))
errx(1, "unknown driver: %s", argv[0]);
}
#endif
errx(exit_jump, 1, "invalid number: %s", argv[n]);
}
switch (argc) {
case 0:
dev = 0;
break;
case 1:
dev = numbers[0];
break;
default:
dev = callPack(globals, pack, argc, numbers);
break;
}
#if RTEMS_REMOVED
if (modes != NULL)
mode = getmode(modes, mode);
#endif
umask(0);
rval = fifo ? mkfifo(name, mode) : mknod(name, mode, dev);
if (rval < 0 && errno == EEXIST && r_flag) {
struct stat sb;
if (lstat(name, &sb) != 0 || (!fifo && sb.st_rdev != dev))
sb.st_mode = 0;
if ((sb.st_mode & S_IFMT) == (mode & S_IFMT)) {
if (r_flag == 1)
/* Ignore permissions and user/group */
return 0;
if (sb.st_mode != mode)
rval = chmod(name, mode);
else
rval = 0;
} else {
unlink(name);
rval = fifo ? mkfifo(name, mode)
: mknod(name, mode, dev);
}
}
if (rval < 0)
err(exit_jump, 1, "%s", name);
if ((uid != (uid_t)-1 || gid != (uid_t)-1) && chown(name, uid, gid) == -1)
/* XXX Should we unlink the files here? */
warn("%s: uid/gid not changed", name);
return 0;
}
static void
usage(rtems_shell_mknod_globals* globals)
{
const char *progname = getprogname();
(void)fprintf(stderr,
"usage: %s [-rR] [-F format] [-m mode] [-u user] [-g group]\n",
progname);
(void)fprintf(stderr,
#ifdef KERN_DRIVERS
" [ name [b | c] [major | driver] minor\n"
#else
" [ name [b | c] major minor\n"
#endif
" | name [b | c] major unit subunit\n"
" | name [b | c] number\n"
" | name p ]\n");
#ifdef KERN_DRIVERS
(void)fprintf(stderr, " %s -l [driver] ...\n", progname);
#endif
exit(1);
}
static int
gid_name(const char *name, gid_t *gid)
{
struct group *g;
g = getgrnam(name);
if (!g)
return -1;
*gid = g->gr_gid;
return 0;
}
static portdev_t
callPack(rtems_shell_mknod_globals* globals, pack_t *f, int n, u_long *numbers)
{
portdev_t d;
const char *error = NULL;
d = (*f)(n, numbers, &error);
if (error != NULL)
errx(exit_jump, 1, "%s", error);
return d;
}
#ifdef KERN_DRIVERS
static void
get_device_info(void)
{
static int mib[2] = {CTL_KERN, KERN_DRIVERS};
size_t len;
if (sysctl(mib, 2, NULL, &len, NULL, 0) != 0)
err(1, "kern.drivers" );
kern_drivers = malloc(len);
if (kern_drivers == NULL)
err(1, "malloc");
if (sysctl(mib, 2, kern_drivers, &len, NULL, 0) != 0)
err(1, "kern.drivers" );
num_drivers = len / sizeof *kern_drivers;
}
static void
print_device_info(char **names)
{
int i;
struct kinfo_drivers *kd;
if (kern_drivers == NULL)
get_device_info();
do {
kd = kern_drivers;
for (i = 0; i < num_drivers; kd++, i++) {
if (*names && strcmp(*names, kd->d_name))
continue;
printf("%s", kd->d_name);
if (kd->d_cmajor != -1)
printf(" character major %d", kd->d_cmajor);
if (kd->d_bmajor != -1)
printf(" block major %d", kd->d_bmajor);
printf("\n");
}
} while (*names && *++names);
}
static int
major_from_name(const char *name, mode_t mode)
{
int i;
struct kinfo_drivers *kd;
if (kern_drivers == NULL)
get_device_info();
kd = kern_drivers;
for (i = 0; i < num_drivers; kd++, i++) {
if (strcmp(name, kd->d_name))
continue;
if (S_ISCHR(mode))
return kd->d_cmajor;
return kd->d_bmajor;
}
return -1;
}
#endif
rtems_shell_cmd_t rtems_shell_MKNOD_Command = {
"mknod", /* name */
"mknod mknod [-rR] [-F fmt] [-m mode] name [c | b] minor", /* usage */
"files", /* topic */
rtems_shell_main_mknod, /* command */
NULL, /* alias */
NULL /* next */
};
