Initial population

git-svn-id: https://svn.o-hand.com/repos/poky@1 311d38ba-8fff-0310-9ca6-ca027cbcb966

1 files changed, 338 insertions, 0 deletions

diff --git a/openembedded/packages/makedevs/makedevs-1.0.0/makedevs.c b/openembedded/packages/makedevs/makedevs-1.0.0/makedevs.c
new file mode 100644
index 0000000000..a9bf8e782a
--- /dev/null
+++ b/openembedded/packages/makedevs/makedevs-1.0.0/makedevs.c
@@ -0,0 +1,338 @@
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <unistd.h>
+#include <time.h>
+#include <getopt.h>
+#include <libgen.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#define MINORBITS	8
+#define MKDEV(ma,mi)	(((ma) << MINORBITS) | (mi))
+
+/* These are all stolen from busybox's libbb to make
+ * error handling simpler (and since I maintain busybox, 
+ * I'm rather partial to these for error handling). 
+ *  -Erik
+ */
+static const char *const app_name = "makedevs";
+static const char *const memory_exhausted = "memory exhausted";
+static char default_rootdir[]=".";
+static char *rootdir = default_rootdir;
+
+static void verror_msg(const char *s, va_list p)
+{
+	fflush(stdout);
+	fprintf(stderr, "%s: ", app_name);
+	vfprintf(stderr, s, p);
+}
+
+static void error_msg_and_die(const char *s, ...)
+{
+	va_list p;
+
+	va_start(p, s);
+	verror_msg(s, p);
+	va_end(p);
+	putc('\n', stderr);
+	exit(EXIT_FAILURE);
+}
+
+static void vperror_msg(const char *s, va_list p)
+{
+	int err = errno;
+
+	if (s == 0)
+		s = "";
+	verror_msg(s, p);
+	if (*s)
+		s = ": ";
+	fprintf(stderr, "%s%s\n", s, strerror(err));
+}
+
+#if 0
+static void perror_msg(const char *s, ...)
+{
+	va_list p;
+
+	va_start(p, s);
+	vperror_msg(s, p);
+	va_end(p);
+}
+#endif
+
+static void perror_msg_and_die(const char *s, ...)
+{
+	va_list p;
+
+	va_start(p, s);
+	vperror_msg(s, p);
+	va_end(p);
+	exit(EXIT_FAILURE);
+}
+
+static FILE *xfopen(const char *path, const char *mode)
+{
+	FILE *fp;
+
+	if ((fp = fopen(path, mode)) == NULL)
+		perror_msg_and_die("%s", path);
+	return fp;
+}
+
+static char *xstrdup(const char *s)
+{
+	char *t;
+
+	if (s == NULL)
+		return NULL;
+
+	t = strdup(s);
+
+	if (t == NULL)
+		error_msg_and_die(memory_exhausted);
+
+	return t;
+}
+
+
+static void add_new_directory(char *name, char *path, 
+		unsigned long uid, unsigned long gid, unsigned long mode)
+{
+//	printf("Directory: %s %s  UID: %ld  GID %ld  MODE: %ld\n", path, name, uid, gid, mode);
+}
+
+static void add_new_device(char *name, char *path, unsigned long uid, 
+	unsigned long gid, unsigned long mode, dev_t rdev)
+{
+	int status;
+	struct stat sb;
+	time_t timestamp = time(NULL);
+
+	memset(&sb, 0, sizeof(struct stat));
+	status = lstat(path, &sb);
+
+	if (status >= 0) {
+		/* It is ok for some types of files to not exit on disk (such as
+		 * device nodes), but if they _do_ exist the specified mode had
+		 * better match the actual file or strange things will happen.... */
+		if ((mode & S_IFMT) != (sb.st_mode & S_IFMT))
+			error_msg_and_die("%s: file type does not match specified type!", path);
+		timestamp = sb.st_mtime;
+	}
+
+	mknod(name, mode, rdev);
+//	printf("Device: %s %s  UID: %ld  GID: %ld  MODE: %ld  MAJOR: %d  MINOR: %d\n",
+//			path, name, uid, gid, mode, (short)(rdev >> 8), (short)(rdev & 0xff));
+}
+
+static void add_new_file(char *name, char *path, unsigned long uid,
+				  unsigned long gid, unsigned long mode)
+{
+//	printf("File: %s %s  UID: %ld  GID: %ld  MODE: %ld\n",
+//			path, name, gid, uid, mode);
+}
+
+
+/*  device table entries take the form of:
+    <path>	<type> <mode>	<uid>	<gid>	<major>	<minor>	<start>	<inc>	<count>
+    /dev/mem    c      640      0       0       1       1       0        0        -
+
+    type can be one of: 
+	f	A regular file
+	d	Directory
+	c	Character special device file
+	b	Block special device file
+	p	Fifo (named pipe)
+
+    I don't bother with symlinks (permissions are irrelevant), hard
+    links (special cases of regular files), or sockets (why bother).
+
+    Regular files must exist in the target root directory.  If a char,
+    block, fifo, or directory does not exist, it will be created.
+*/
+static int interpret_table_entry(char *line)
+{
+	char *name;
+	char path[4096], type;
+	unsigned long mode = 0755, uid = 0, gid = 0, major = 0, minor = 0;
+	unsigned long start = 0, increment = 1, count = 0;
+
+	if (0 > sscanf(line, "%40s %c %lo %lu %lu %lu %lu %lu %lu %lu", path,
+		    &type, &mode, &uid, &gid, &major, &minor, &start,
+		    &increment, &count)) 
+	{
+		return 1;
+	}
+
+	if (!strcmp(path, "/")) {
+		error_msg_and_die("Device table entries require absolute paths");
+	}
+	name = xstrdup(path + 1);
+	sprintf(path, "%s/%s\0", rootdir, name);
+
+	switch (type) {
+	case 'd':
+		mode |= S_IFDIR;
+		add_new_directory(name, path, uid, gid, mode);
+		break;
+	case 'f':
+		mode |= S_IFREG;
+		add_new_file(name, path, uid, gid, mode);
+		break;
+	case 'p':
+		mode |= S_IFIFO;
+		add_new_file(name, path, uid, gid, mode);
+		break;
+	case 'c':
+	case 'b':
+		mode |= (type == 'c') ? S_IFCHR : S_IFBLK;
+		if (count > 0) {
+			int i;
+			dev_t rdev;
+			char buf[80];
+
+			for (i = start; i < count; i++) {
+				sprintf(buf, "%s%d", name, i);
+				/* FIXME:  MKDEV uses illicit insider knowledge of kernel 
+				 * major/minor representation...  */
+				rdev = MKDEV(major, minor + (i * increment - start));
+				add_new_device(buf, path, uid, gid, mode, rdev);
+			}
+		} else {
+			/* FIXME:  MKDEV uses illicit insider knowledge of kernel 
+			 * major/minor representation...  */
+			dev_t rdev = MKDEV(major, minor);
+
+			add_new_device(name, path, uid, gid, mode, rdev);
+		}
+		break;
+	default:
+		error_msg_and_die("Unsupported file type");
+	}
+	if (name) free(name);
+	return 0;
+}
+
+
+static void parse_device_table(FILE * file)
+{
+	char *line;
+	size_t length = 256;
+	int len = 0;
+
+	/* Looks ok so far.  The general plan now is to read in one
+	 * line at a time, check for leading comment delimiters ('#'),
+	 * then try and parse the line as a device table.  If we fail
+	 * to parse things, try and help the poor fool to fix their
+	 * device table with a useful error msg... */
+
+	if((line = (char *)malloc(length)) == NULL) {
+		fclose(file);
+		return;
+	}
+
+	while ((len = getline(&line, &length, file)) != -1) {
+		/* First trim off any whitespace */
+
+		/* trim trailing whitespace */
+		while (len > 0 && isspace(line[len - 1]))
+			line[--len] = '\0';
+
+		/* trim leading whitespace */
+		memmove(line, &line[strspn(line, " \n\r\t\v")], len + 1);
+
+		/* If this is NOT a comment line, try to interpret it */
+		if (*line != '#') interpret_table_entry(line);
+	}
+	if (line) free(line);
+
+	fclose(file);
+}
+
+static int go(char *dname, FILE * devtable)
+{
+	struct stat sb;
+
+	if (lstat(dname, &sb)) {
+		perror_msg_and_die("%s", dname);
+	}
+	if (chdir(dname))
+		perror_msg_and_die("%s", dname);
+
+	if (devtable)
+		parse_device_table(devtable);
+
+	return 0;
+}
+
+
+static struct option long_options[] = {
+	{"root", 1, NULL, 'r'},
+	{"help", 0, NULL, 'h'},
+	{"squash", 0, NULL, 'q'},
+	{"version", 0, NULL, 'v'},
+	{"devtable", 1, NULL, 'D'},
+	{NULL, 0, NULL, 0}
+};
+
+static char *helptext =
+	"Usage: makedevs [OPTIONS]\n"
+	"Build entries based upon device_table.txt\n\n"
+	"Options:\n"
+	"  -r, -d, --root=DIR     Build filesystem from directory DIR (default: cwd)\n"
+	"  -D, --devtable=FILE    Use the named FILE as a device table file\n"
+	"  -q, --squash           Squash permissions and owners making all files be owned by root\n"
+	"  -h, --help             Display this help text\n"
+	"  -v, --version          Display version information\n\n";
+
+
+static char *revtext = "$Revision: 0.1 $";
+
+int main(int argc, char **argv)
+{
+	int c, opt;
+	extern char *optarg;
+	struct stat statbuf;
+	FILE *devtable = NULL;
+
+	umask (0);
+
+	while ((opt = getopt_long(argc, argv, "D:d:r:qhv", 
+			long_options, &c)) >= 0) {
+		switch (opt) {
+		case 'D':
+			devtable = xfopen(optarg, "r");
+			if (fstat(fileno(devtable), &statbuf) < 0)
+				perror_msg_and_die(optarg);
+			if (statbuf.st_size < 10)
+				error_msg_and_die("%s: not a proper device table file", optarg);
+			break;
+		case 'h':
+			fprintf(stderr, helptext);
+			exit(1);
+		case 'r':
+		case 'd':				/* for compatibility with mkfs.jffs, genext2fs, etc... */
+			if (rootdir != default_rootdir) {
+				error_msg_and_die("root directory specified more than once");
+			}
+			rootdir = xstrdup(optarg);
+			break;
+
+		case 'v':
+			fprintf(stderr, "makedevs revision %.*s\n",
+					(int) strlen(revtext) - 13, revtext + 11);
+			exit(1);
+		}
+	}
+
+	go(rootdir, devtable);
+	return 0;
+}