+/* vi: set sw=4 ts=4: */
/*
* public domain -- Dave 'Kill a Cop' Cinege <dcinege@psychosis.com>
- *
+ *
* makedevs
- * Make ranges of device files quickly.
+ * Make ranges of device files quickly.
* known bugs: can't deal with alpha ranges
*/
-
-#include "internal.h"
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-
-const char makedevs_usage[] =
-"makedevs 0.01 -- Create an entire range of device files\n\n"
-"\tmakedevs /dev/ttyS c 4 64 0 63 (ttyS0-ttyS63)\n"
-"\tmakedevs /dev/hda b 3 0 0 8 s (hda,hda1-hda8)\n";
-
-int
-makedevs_main(int argc, char * * argv)
+//config:config MAKEDEVS
+//config: bool "makedevs (9.3 kb)"
+//config: default y
+//config: help
+//config: 'makedevs' is a utility used to create a batch of devices with
+//config: one command.
+//config:
+//config: There are two choices for command line behaviour, the interface
+//config: as used by LEAF/Linux Router Project, or a device table file.
+//config:
+//config: 'leaf' is traditionally what busybox follows, it allows multiple
+//config: devices of a particluar type to be created per command.
+//config: e.g. /dev/hda[0-9]
+//config: Device properties are passed as command line arguments.
+//config:
+//config: 'table' reads device properties from a file or stdin, allowing
+//config: a batch of unrelated devices to be made with one command.
+//config: User/group names are allowed as an alternative to uid/gid.
+//config:
+//config:choice
+//config: prompt "Choose makedevs behaviour"
+//config: depends on MAKEDEVS
+//config: default FEATURE_MAKEDEVS_TABLE
+//config:
+//config:config FEATURE_MAKEDEVS_LEAF
+//config: bool "leaf"
+//config:
+//config:config FEATURE_MAKEDEVS_TABLE
+//config: bool "table"
+//config:
+//config:endchoice
+
+//applet:IF_MAKEDEVS(APPLET(makedevs, BB_DIR_SBIN, BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_MAKEDEVS) += makedevs.o
+
+//usage:#if ENABLE_FEATURE_MAKEDEVS_LEAF
+//usage:#define makedevs_trivial_usage
+//usage: "NAME TYPE MAJOR MINOR FIRST LAST [s]"
+//usage:#define makedevs_full_usage "\n\n"
+//usage: "Create a range of block or character special files"
+//usage: "\n"
+//usage: "\nTYPE is:"
+//usage: "\n b Block device"
+//usage: "\n c Character device"
+//usage: "\n f FIFO, MAJOR and MINOR are ignored"
+//usage: "\n"
+//usage: "\nFIRST..LAST specify numbers appended to NAME."
+//usage: "\nIf 's' is the last argument, the base device is created as well."
+//usage: "\n"
+//usage: "\nExamples:"
+//usage: "\n makedevs /dev/ttyS c 4 66 2 63 -> ttyS2-ttyS63"
+//usage: "\n makedevs /dev/hda b 3 0 0 8 s -> hda,hda1-hda8"
+//usage:
+//usage:#define makedevs_example_usage
+//usage: "# makedevs /dev/ttyS c 4 66 2 63\n"
+//usage: "[creates ttyS2-ttyS63]\n"
+//usage: "# makedevs /dev/hda b 3 0 0 8 s\n"
+//usage: "[creates hda,hda1-hda8]\n"
+//usage:#endif
+//usage:
+//usage:#if ENABLE_FEATURE_MAKEDEVS_TABLE
+//usage:#define makedevs_trivial_usage
+//usage: "[-d device_table] rootdir"
+//usage:#define makedevs_full_usage "\n\n"
+//usage: "Create a range of special files as specified in a device table.\n"
+//usage: "Device table entries take the form of:\n"
+//usage: "<name> <type> <mode> <uid> <gid> <major> <minor> <start> <inc> <count>\n"
+//usage: "Where name is the file name, type can be one of:\n"
+//usage: " f Regular file\n"
+//usage: " d Directory\n"
+//usage: " c Character device\n"
+//usage: " b Block device\n"
+//usage: " p Fifo (named pipe)\n"
+//usage: "uid is the user id for the target file, gid is the group id for the\n"
+//usage: "target file. The rest of the entries (major, minor, etc) apply to\n"
+//usage: "to device special files. A '-' may be used for blank entries."
+//usage:
+//usage:#define makedevs_example_usage
+//usage: "For example:\n"
+//usage: "<name> <type> <mode><uid><gid><major><minor><start><inc><count>\n"
+//usage: "/dev d 755 0 0 - - - - -\n"
+//usage: "/dev/console c 666 0 0 5 1 - - -\n"
+//usage: "/dev/null c 666 0 0 1 3 0 0 -\n"
+//usage: "/dev/zero c 666 0 0 1 5 0 0 -\n"
+//usage: "/dev/hda b 640 0 0 3 0 0 0 -\n"
+//usage: "/dev/hda b 640 0 0 3 1 1 1 15\n\n"
+//usage: "Will Produce:\n"
+//usage: "/dev\n"
+//usage: "/dev/console\n"
+//usage: "/dev/null\n"
+//usage: "/dev/zero\n"
+//usage: "/dev/hda\n"
+//usage: "/dev/hda[0-15]\n"
+//usage:#endif
+
+#include "libbb.h"
+
+#if ENABLE_FEATURE_MAKEDEVS_LEAF
+/*
+makedevs NAME TYPE MAJOR MINOR FIRST LAST [s]
+TYPEs:
+b Block device
+c Character device
+f 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;
+ int Smajor, Sminor, S, E;
-const char *basedev = argv[1];
-const char *type = argv[2];
-int major = atoi(argv[3]);
-int Sminor = atoi(argv[4]);
-int S = atoi(argv[5]);
-int E = atoi(argv[6]);
-int sbase = argc == 8 ? 1 : 0;
+ if (argc < 7 || argv[1][0] == '-')
+ bb_show_usage();
-mode_t mode = 0;
-dev_t dev = 0;
-char devname[255];
-char buf[255];
+ basedev = argv[1];
+ buf = xasprintf("%s%u", argv[1], (unsigned)-1);
+ type = argv[2];
+ Smajor = xatoi_positive(argv[3]);
+ Sminor = xatoi_positive(argv[4]);
+ S = xatoi_positive(argv[5]);
+ E = xatoi_positive(argv[6]);
+ nodname = argv[7] ? 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:
- fprintf(stderr, "Usage: %s\n", makedevs_usage);
- return 2;
- }
- mode |= 0660;
-
- while ( S <= E ) {
-
- if (type[0] != 'f')
- dev = (major << 8) | Sminor;
- strcpy(devname, basedev);
-
- if (sbase == 0) {
- sprintf(buf, "%d", S);
- strcat(devname, buf);
- } else {
- sbase = 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) {
+ 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)) != 0
+ && errno != EEXIST
+ ) {
+ bb_perror_msg("can't create '%s'", nodname);
}
-
- if (mknod (devname, mode, dev))
- printf("Failed to create: %s\n", devname);
-
- S++; Sminor++;
+
+ /*if (nodname == basedev)*/ /* ex. /dev/hda - to /dev/hda1 ... */
+ nodname = buf;
+ S++;
+ Sminor++;
}
-return 0;
+ return 0;
}
-/*
-And this is what this program replaces. The shell is too slow!
-
-makedev () {
-local basedev=$1; local S=$2; local E=$3
-local major=$4; local Sminor=$5; local type=$6
-local sbase=$7
-
- if [ ! "$sbase" = "" ]; then
- mknod "$basedev" $type $major $Sminor
- S=`expr $S + 1`
- Sminor=`expr $Sminor + 1`
- fi
-
- while [ $S -le $E ]; do
- mknod "$basedev$S" $type $major $Sminor
- S=`expr $S + 1`
- Sminor=`expr $Sminor + 1`
- done
+#elif ENABLE_FEATURE_MAKEDEVS_TABLE
+
+/* Licensed under GPLv2 or later, see file LICENSE in this source tree. */
+
+int makedevs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int makedevs_main(int argc UNUSED_PARAM, char **argv)
+{
+ parser_t *parser;
+ char *line = (char *)"-";
+ int ret = EXIT_SUCCESS;
+
+ opt_complementary = "=1"; /* exactly one param */
+ getopt32(argv, "d:", &line);
+ argv += optind;
+
+ xchdir(*argv); /* ensure root dir exists */
+
+ umask(0);
+
+ printf("rootdir=%s\ntable=", *argv);
+ if (NOT_LONE_DASH(line)) {
+ printf("'%s'\n", line);
+ } else {
+ puts("<stdin>");
+ }
+
+ parser = config_open(line);
+ while (config_read(parser, &line, 1, 1, "# \t", PARSE_NORMAL)) {
+ int linenum;
+ char type;
+ unsigned mode = 0755;
+ unsigned major = 0;
+ unsigned minor = 0;
+ unsigned count = 0;
+ unsigned increment = 0;
+ unsigned start = 0;
+ char user[41];
+ char group[41];
+ char *full_name;
+ int name_len;
+ uid_t uid;
+ gid_t gid;
+
+ linenum = parser->lineno;
+
+ if ((1 > sscanf(line, "%*s%n %c %o %40s %40s %u %u %u %u %u",
+ &name_len, &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;
+ }
+
+ gid = (*group) ? get_ug_id(group, xgroup2gid) : getgid();
+ uid = (*user) ? get_ug_id(user, xuname2uid) : getuid();
+ line[name_len] = '\0';
+ full_name = line;
+ /* We are already in the right root dir,
+ * so make absolute paths relative */
+ if ('/' == full_name[0])
+ full_name++;
+
+ if (type == 'd') {
+ bb_make_directory(full_name, mode | S_IFDIR, FILEUTILS_RECUR);
+ if (chown(full_name, uid, gid) == -1) {
+ chown_fail:
+ bb_perror_msg("line %d: can't chown %s", linenum, full_name);
+ ret = EXIT_FAILURE;
+ continue;
+ }
+ if (chmod(full_name, mode) < 0) {
+ chmod_fail:
+ bb_perror_msg("line %d: can't chmod %s", linenum, full_name);
+ ret = EXIT_FAILURE;
+ continue;
+ }
+ } 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;
+ continue;
+ }
+ if (chown(full_name, uid, gid) < 0)
+ goto chown_fail;
+ if (chmod(full_name, mode) < 0)
+ goto chmod_fail;
+ } else {
+ unsigned i;
+
+ 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;
+ continue;
+ }
+
+ if (count != 0)
+ count--;
+ for (i = 0; i <= count; i++) {
+ dev_t rdev;
+ char *nameN = full_name;
+ if (count != 0)
+ nameN = xasprintf("%s%u", full_name, start + i);
+ rdev = makedev(major, minor + i * increment);
+ if (mknod(nameN, mode, rdev) != 0
+ && errno != EEXIST
+ ) {
+ bb_perror_msg("line %d: can't create node %s", linenum, nameN);
+ ret = EXIT_FAILURE;
+ } else if (chown(nameN, uid, gid) < 0) {
+ bb_perror_msg("line %d: can't chown %s", linenum, nameN);
+ ret = EXIT_FAILURE;
+ } else if (chmod(nameN, mode) < 0) {
+ bb_perror_msg("line %d: can't chmod %s", linenum, nameN);
+ ret = EXIT_FAILURE;
+ }
+ if (count != 0)
+ free(nameN);
+ }
+ }
+ }
+ if (ENABLE_FEATURE_CLEAN_UP)
+ config_close(parser);
+
+ return ret;
}
-*/
+
+#else
+# error makedevs configuration error, either leaf or table must be selected
+#endif
projects / oweals / busybox.git / blobdiff