Device table support for makedevs, the previous behaviour can been

selected at configure time.

2 files changed, 190 insertions, 32 deletions

diff --git a/miscutils/Config.in b/miscutils/Config.in
index 7e18c16..320f4c2 100644
--- a/miscutils/Config.in
+++ b/miscutils/Config.in
@@ -143,10 +143,32 @@ config CONFIG_MAKEDEVS
 	bool "makedevs"
 	default n
 	help
-	  'makedevs' is a utility used and created by the Linux Router Project.
-	  It creates a large number of device special files (/dev devices)
-	  rather quickly, and can be considerably faster then running mknod a
-	  zillion times.
+	  'makedevs' is a utility used to create a batch of devices with
+	  one command.
+	  .
+	  There are two choices for command line behaviour, the interface
+	  as used by LEAF/Linux Router Project, or a device table file.
+	  . 
+	  'leaf' is traditionally what busybox follows, it allows multiple
+	  devices of a particluar type to be created per command.
+	  e.g. /dev/hda[0-9]
+          Device properties are passed as command line arguments.
+	  .
+	  'table' reads device properties from a file or stdin, allowing
+	  a batch of unrelated devices to be makde with one command. 
+          User/group names are allowed as an alternative to uid/gid.
+
+choice
+	prompt "Choose makedevs behaviour"
+	default CONFIG_FEATURE_MAKDEVS_TABLE
+
+config CONFIG_FEATURE_MAKEDEVS_LEAF
+        bool "leaf"
+
+config CONFIG_FEATURE_MAKEDEVS_TABLE
+	bool "table"
+
+endchoice
 
 config CONFIG_MT
 	bool "mt"
diff --git a/miscutils/makedevs.c b/miscutils/makedevs.c
index 45498bb..57b2d6c 100644
--- a/miscutils/makedevs.c
+++ b/miscutils/makedevs.c
@@ -1,20 +1,27 @@
 /* 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 <sys/types.h>
+
+#include <fcntl.h>
+#include <getopt.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <fcntl.h>
+#include <time.h>
 #include <unistd.h>
-#include <sys/types.h>
+
 #include "busybox.h"
 
+#ifdef CONFIG_FEATURE_MAKEDEVS_LEAF
+
+/*
+ * 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
+ */
+ 
 int makedevs_main(int argc, char **argv)
 {
 	mode_t mode;
@@ -69,24 +76,153 @@ int makedevs_main(int argc, char **argv)
 	return 0;
 }
 
+#elif defined CONFIG_FEATURE_MAKEDEVS_TABLE
+
 /*
-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
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+static const struct option makedevs_long_options[] = {
+	{"root", 1, NULL, 'r'},
+	{0, 0, 0, 0}
+};
+
+extern int makedevs_main(int argc, char **argv)
+{
+	FILE *table;
+	int opt;
+	char *rootdir = "./";
+	char *line;
+	int ret = EXIT_SUCCESS;
+
+	bb_opt_complementaly = "d~r";
+	bb_applet_long_options = makedevs_long_options;
+	opt = bb_getopt_ulflags(argc, argv, "d:r:", &rootdir, &rootdir);
+
+	if (optind + 1 == argc) {
+		table = bb_xfopen(argv[optind], "r");
+	} else {
+		table = stdin;
+	}
+
+	if (chdir(rootdir) == -1) {
+		bb_perror_msg_and_die("Couldnt chdor to %s", rootdir);
+	}
+
+	umask(0);
+
+	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;
+
+		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)) {
+			bb_error_msg("Ignoring invalid line\n%s\n", line);
+			ret = EXIT_FAILURE;
+			continue;
+		}
+		if (name[0] == '#') {
+			continue;
+		}
+		if (group) {
+			gid = get_ug_id(group, my_getgrnam);
+		} else {
+			gid = getgid();
+		}
+		if (user) {
+			uid = get_ug_id(user, my_getpwnam);
+		} else {
+			uid = getuid();
+		}
+		full_name = concat_path_file(rootdir, name);
+
+		if (type == 'd') {
+			bb_make_directory(full_name, mode | S_IFDIR, 0);
+			if (chown(full_name, uid, gid) == -1) {
+				bb_perror_msg("chown failed for %s", 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("Unsupported file type %c", 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("Couldnt create node %s", full_name_inc);
+						ret = EXIT_FAILURE;
+					}
+					else if (chown(full_name_inc, uid, gid) == -1) {
+						bb_perror_msg("chown failed for %s", 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("Couldnt create node %s", full_name);
+					ret = EXIT_FAILURE;
+				}
+				else if (chown(full_name, uid, gid) == -1) {
+					bb_perror_msg("chown failed for %s", full_name);
+					ret = EXIT_FAILURE;
+				}
+			}
+		}
+loop:
+		free(line);
+		free(full_name);
+	}
+	fclose(table);
+
+	return 0;
 }
-*/
+#else
+# error makdedevs configuration error, either leaf or table must be selected
+#endif