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/* vi: set sw=4 ts=4: */
/*
* public domain -- Dave 'Kill a Cop' Cinege <dcinege@psychosis.com>
*
* makedevs
* Make ranges of device files quickly.
* known bugs: can't deal with alpha ranges
*/
#include "busybox.h"
#ifdef CONFIG_FEATURE_MAKEDEVS_LEAF
int makedevs_main(int argc, char **argv)
{
mode_t mode;
char *basedev, *type, *nodname, buf[255];
int Smajor, Sminor, S, E;
if (argc < 7 || *argv[1]=='-')
bb_show_usage();
basedev = argv[1];
type = argv[2];
Smajor = atoi(argv[3]);
Sminor = atoi(argv[4]);
S = atoi(argv[5]);
E = atoi(argv[6]);
nodname = argc == 8 ? basedev : buf;
mode = 0660;
switch (type[0]) {
case 'c':
mode |= S_IFCHR;
break;
case 'b':
mode |= S_IFBLK;
break;
case 'f':
mode |= S_IFIFO;
break;
default:
bb_show_usage();
}
while (S <= E) {
int sz;
sz = snprintf(buf, sizeof(buf), "%s%d", basedev, S);
if(sz<0 || sz>=sizeof(buf)) /* libc different */
bb_error_msg_and_die("%s too large", basedev);
/* if mode != S_IFCHR and != S_IFBLK third param in mknod() ignored */
if (mknod(nodname, mode, makedev(Smajor, Sminor)))
bb_error_msg("Failed to create: %s", nodname);
if (nodname == basedev) /* ex. /dev/hda - to /dev/hda1 ... */
nodname = buf;
S++;
Sminor++;
}
return 0;
}
#elif defined CONFIG_FEATURE_MAKEDEVS_TABLE
/* Licensed under the GPL v2 or later, see the file LICENSE in this tarball. */
int makedevs_main(int argc, char **argv)
{
FILE *table = stdin;
char *rootdir = NULL;
char *line = NULL;
int linenum = 0;
int ret = EXIT_SUCCESS;
getopt32(argc, argv, "d:", &line);
if (line)
table = xfopen(line, "r");
if (optind >= argc || (rootdir=argv[optind])==NULL) {
bb_error_msg_and_die("root directory not specified");
}
xchdir(rootdir);
umask(0);
printf("rootdir=%s\n", rootdir);
if (line) {
printf("table='%s'\n", line);
} else {
printf("table=<stdin>\n");
}
while ((line = bb_get_chomped_line_from_file(table))) {
char type;
unsigned int mode = 0755;
unsigned int major = 0;
unsigned int minor = 0;
unsigned int count = 0;
unsigned int increment = 0;
unsigned int start = 0;
char name[41];
char user[41];
char group[41];
char *full_name;
uid_t uid;
gid_t gid;
linenum++;
if ((2 > sscanf(line, "%40s %c %o %40s %40s %u %u %u %u %u", name,
&type, &mode, user, group, &major,
&minor, &start, &increment, &count)) ||
((major | minor | start | count | increment) > 255))
{
if (*line=='\0' || *line=='#' || isspace(*line))
continue;
bb_error_msg("line %d invalid: '%s'", linenum, line);
ret = EXIT_FAILURE;
continue;
}
if (name[0] == '#') {
continue;
}
gid = (*group) ? get_ug_id(group, bb_xgetgrnam) : getgid();
uid = (*user) ? get_ug_id(user, bb_xgetpwnam) : getuid();
full_name = concat_path_file(rootdir, name);
if (type == 'd') {
bb_make_directory(full_name, mode | S_IFDIR, FILEUTILS_RECUR);
if (chown(full_name, uid, gid) == -1) {
bb_perror_msg("line %d: chown failed for %s", linenum, full_name);
ret = EXIT_FAILURE;
goto loop;
}
if ((mode != -1) && (chmod(full_name, mode) < 0)){
bb_perror_msg("line %d: chmod failed for %s", linenum, full_name);
ret = EXIT_FAILURE;
goto loop;
}
} else if (type == 'f') {
struct stat st;
if ((stat(full_name, &st) < 0 || !S_ISREG(st.st_mode))) {
bb_perror_msg("line %d: regular file '%s' does not exist", linenum, full_name);
ret = EXIT_FAILURE;
goto loop;
}
if (chown(full_name, uid, gid) == -1) {
bb_perror_msg("line %d: chown failed for %s", linenum, full_name);
ret = EXIT_FAILURE;
goto loop;
}
if ((mode != -1) && (chmod(full_name, mode) < 0)){
bb_perror_msg("line %d: chmod failed for %s", linenum, full_name);
ret = EXIT_FAILURE;
goto loop;
}
} else
{
dev_t rdev;
if (type == 'p') {
mode |= S_IFIFO;
}
else if (type == 'c') {
mode |= S_IFCHR;
}
else if (type == 'b') {
mode |= S_IFBLK;
} else {
bb_error_msg("line %d: unsupported file type %c", linenum, type);
ret = EXIT_FAILURE;
goto loop;
}
if (count > 0) {
int i;
char *full_name_inc;
full_name_inc = xmalloc(strlen(full_name) + 4);
for (i = start; i < count; i++) {
sprintf(full_name_inc, "%s%d", full_name, i);
rdev = (major << 8) + minor + (i * increment - start);
if (mknod(full_name_inc, mode, rdev) == -1) {
bb_perror_msg("line %d: could not create node %s", linenum, full_name_inc);
ret = EXIT_FAILURE;
}
else if (chown(full_name_inc, uid, gid) == -1) {
bb_perror_msg("line %d: chown failed for %s", linenum, full_name_inc);
ret = EXIT_FAILURE;
}
if ((mode != -1) && (chmod(full_name_inc, mode) < 0)){
bb_perror_msg("line %d: chmod failed for %s", linenum, full_name_inc);
ret = EXIT_FAILURE;
}
}
free(full_name_inc);
} else {
rdev = (major << 8) + minor;
if (mknod(full_name, mode, rdev) == -1) {
bb_perror_msg("line %d: could not create node %s", linenum, full_name);
ret = EXIT_FAILURE;
}
else if (chown(full_name, uid, gid) == -1) {
bb_perror_msg("line %d: chown failed for %s", linenum, full_name);
ret = EXIT_FAILURE;
}
if ((mode != -1) && (chmod(full_name, mode) < 0)){
bb_perror_msg("line %d: chmod failed for %s", linenum, full_name);
ret = EXIT_FAILURE;
}
}
}
loop:
free(line);
free(full_name);
}
fclose(table);
return ret;
}
#else
# error makedevs configuration error, either leaf or table must be selected
#endif
|
