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-rw-r--r--miscutils/makedevs.c150
1 files changed, 64 insertions, 86 deletions
diff --git a/miscutils/makedevs.c b/miscutils/makedevs.c
index ed08f7e..91da169 100644
--- a/miscutils/makedevs.c
+++ b/miscutils/makedevs.c
@@ -10,26 +10,39 @@
#include "libbb.h"
#if ENABLE_FEATURE_MAKEDEVS_LEAF
+/*
+makedevs NAME TYPE MAJOR MINOR FIRST LAST [s]
+TYPEs:
+b Block device
+c Character device
+p FIFO
+
+FIRST..LAST specify numbers appended to NAME.
+If 's' is the last argument, the base device is created as well.
+Examples:
+ makedevs /dev/ttyS c 4 66 2 63 -> ttyS2-ttyS63
+ makedevs /dev/hda b 3 0 0 8 s -> hda,hda1-hda8
+*/
int makedevs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int makedevs_main(int argc, char **argv)
{
mode_t mode;
- char *basedev, *type, *nodname, buf[255];
+ char *basedev, *type, *nodname, *buf;
int Smajor, Sminor, S, E;
- if (argc < 7 || *argv[1]=='-')
+ if (argc < 7 || argv[1][0] == '-')
bb_show_usage();
basedev = argv[1];
+ buf = xasprintf("%s%u", argv[1], (unsigned)-1);
type = argv[2];
Smajor = xatoi_u(argv[3]);
Sminor = xatoi_u(argv[4]);
S = xatoi_u(argv[5]);
E = xatoi_u(argv[6]);
- nodname = argc == 8 ? basedev : buf;
+ nodname = argv[7] ? basedev : buf;
mode = 0660;
-
switch (type[0]) {
case 'c':
mode |= S_IFCHR;
@@ -45,18 +58,14 @@ int makedevs_main(int argc, char **argv)
}
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 */
+ sprintf(buf, "%s%u", basedev, S);
+ /* 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);
+ bb_perror_msg("can't create %s", nodname);
- if (nodname == basedev) /* ex. /dev/hda - to /dev/hda1 ... */
+ /*if (nodname == basedev)*/ /* ex. /dev/hda - to /dev/hda1 ... */
nodname = buf;
S++;
Sminor++;
@@ -70,34 +79,31 @@ int makedevs_main(int argc, char **argv)
/* Licensed under the GPL v2 or later, see the file LICENSE in this tarball. */
int makedevs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int makedevs_main(int argc, char **argv)
+int makedevs_main(int argc UNUSED_PARAM, char **argv)
{
- FILE *table = stdin;
+ parser_t *parser;
char *rootdir = NULL;
- char *line = NULL;
- int linenum = 0;
+ char *line = (char *)"-";
+ int linenum;
int ret = EXIT_SUCCESS;
+ opt_complementary = "=1"; /* exactly one param */
getopt32(argv, "d:", &line);
- if (line)
- table = xfopen_for_read(line);
-
- if (optind >= argc || (rootdir=argv[optind])==NULL) {
- bb_error_msg_and_die("root directory not specified");
- }
+ rootdir = argv[optind];
+ parser = config_open(line);
xchdir(rootdir);
umask(0);
printf("rootdir=%s\n", rootdir);
- if (line) {
+ if (NOT_LONE_DASH(line)) {
printf("table='%s'\n", line);
} else {
printf("table=<stdin>\n");
}
- while ((line = xmalloc_fgetline(table)) != NULL) {
+ while (config_read(parser, &line, 1, 1, "# \t", PARSE_NORMAL)) {
char type;
unsigned mode = 0755;
unsigned major = 0;
@@ -112,22 +118,17 @@ int makedevs_main(int argc, char **argv)
uid_t uid;
gid_t gid;
- linenum++;
+ linenum = parser->lineno;
- 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;
+ if ((2 > sscanf(line, "%40s %c %o %40s %40s %u %u %u %u %u",
+ name, &type, &mode, user, group,
+ &major, &minor, &start, &increment, &count))
+ || ((unsigned)(major | minor | start | count | increment) > 255)
+ ) {
bb_error_msg("invalid line %d: '%s'", linenum, line);
ret = EXIT_FAILURE;
continue;
}
- if (name[0] == '#') {
- continue;
- }
gid = (*group) ? get_ug_id(group, xgroup2gid) : getgid();
uid = (*user) ? get_ug_id(user, xuname2uid) : getuid();
@@ -136,12 +137,14 @@ int makedevs_main(int argc, char **argv)
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);
+ chown_fail:
+ bb_perror_msg("line %d: can't chown %s", linenum, full_name);
ret = EXIT_FAILURE;
goto loop;
}
if (chmod(full_name, mode) < 0) {
- bb_perror_msg("line %d: chmod failed for %s", linenum, full_name);
+ chmod_fail:
+ bb_perror_msg("line %d: can't chmod %s", linenum, full_name);
ret = EXIT_FAILURE;
goto loop;
}
@@ -152,26 +155,20 @@ int makedevs_main(int argc, char **argv)
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 (chmod(full_name, mode) < 0) {
- bb_perror_msg("line %d: chmod failed for %s", linenum, full_name);
- ret = EXIT_FAILURE;
- goto loop;
- }
+ if (chown(full_name, uid, gid) < 0)
+ goto chown_fail;
+ if (chmod(full_name, mode) < 0)
+ goto chmod_fail;
} else {
dev_t rdev;
+ unsigned i;
+ char *full_name_inc;
if (type == 'p') {
mode |= S_IFIFO;
- }
- else if (type == 'c') {
+ } else if (type == 'c') {
mode |= S_IFCHR;
- }
- else if (type == 'b') {
+ } else if (type == 'b') {
mode |= S_IFBLK;
} else {
bb_error_msg("line %d: unsupported file type %c", linenum, type);
@@ -179,49 +176,30 @@ int makedevs_main(int argc, char **argv)
goto loop;
}
- if (count > 0) {
- unsigned 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 = makedev(major, minor + (i * increment - start));
- if (mknod(full_name_inc, mode, rdev) == -1) {
- bb_perror_msg("line %d: cannot 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 (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 = makedev(major, minor);
- if (mknod(full_name, mode, rdev) == -1) {
- bb_perror_msg("line %d: cannot create node %s", linenum, full_name);
+ full_name_inc = xmalloc(strlen(full_name) + sizeof(int)*3 + 2);
+ if (count)
+ count--;
+ for (i = start; i <= start + count; i++) {
+ sprintf(full_name_inc, count ? "%s%u" : "%s", full_name, i);
+ rdev = makedev(major, minor + (i - start) * increment);
+ if (mknod(full_name_inc, mode, rdev) < 0) {
+ bb_perror_msg("line %d: can't create node %s", linenum, full_name_inc);
ret = EXIT_FAILURE;
- }
- else if (chown(full_name, uid, gid) == -1) {
- bb_perror_msg("line %d: chown failed for %s", linenum, full_name);
+ } else if (chown(full_name_inc, uid, gid) < 0) {
+ bb_perror_msg("line %d: can't chown %s", linenum, full_name_inc);
ret = EXIT_FAILURE;
- }
- if (chmod(full_name, mode) < 0) {
- bb_perror_msg("line %d: chmod failed for %s", linenum, full_name);
+ } else if (chmod(full_name_inc, mode) < 0) {
+ bb_perror_msg("line %d: can't chmod %s", linenum, full_name_inc);
ret = EXIT_FAILURE;
}
}
+ free(full_name_inc);
}
loop:
- free(line);
free(full_name);
}
- fclose(table);
+ if (ENABLE_FEATURE_CLEAN_UP)
+ config_close(parser);
return ret;
}
generated by cgit v1.1 at 2024-12-27 07:35:23 +0000