Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 512 insertions, 0 deletions

diff --git a/usr/gen_init_cpio.c b/usr/gen_init_cpio.c
new file mode 100644
index 0000000..33dbcbf
--- /dev/null
+++ b/usr/gen_init_cpio.c
@@ -0,0 +1,512 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <string.h>
+#include <unistd.h>
+#include <time.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <ctype.h>
+#include <limits.h>
+
+/*
+ * Original work by Jeff Garzik
+ *
+ * External file lists, symlink, pipe and fifo support by Thayne Harbaugh
+ */
+
+#define xstr(s) #s
+#define str(s) xstr(s)
+
+static unsigned int offset;
+static unsigned int ino = 721;
+
+struct file_handler {
+	const char *type;
+	int (*handler)(const char *line);
+};
+
+static void push_string(const char *name)
+{
+	unsigned int name_len = strlen(name) + 1;
+
+	fputs(name, stdout);
+	putchar(0);
+	offset += name_len;
+}
+
+static void push_pad (void)
+{
+	while (offset & 3) {
+		putchar(0);
+		offset++;
+	}
+}
+
+static void push_rest(const char *name)
+{
+	unsigned int name_len = strlen(name) + 1;
+	unsigned int tmp_ofs;
+
+	fputs(name, stdout);
+	putchar(0);
+	offset += name_len;
+
+	tmp_ofs = name_len + 110;
+	while (tmp_ofs & 3) {
+		putchar(0);
+		offset++;
+		tmp_ofs++;
+	}
+}
+
+static void push_hdr(const char *s)
+{
+	fputs(s, stdout);
+	offset += 110;
+}
+
+static void cpio_trailer(void)
+{
+	char s[256];
+	const char name[] = "TRAILER!!!";
+
+	sprintf(s, "%s%08X%08X%08lX%08lX%08X%08lX"
+	       "%08X%08X%08X%08X%08X%08X%08X",
+		"070701",		/* magic */
+		0,			/* ino */
+		0,			/* mode */
+		(long) 0,		/* uid */
+		(long) 0,		/* gid */
+		1,			/* nlink */
+		(long) 0,		/* mtime */
+		0,			/* filesize */
+		0,			/* major */
+		0,			/* minor */
+		0,			/* rmajor */
+		0,			/* rminor */
+		(unsigned)strlen(name)+1, /* namesize */
+		0);			/* chksum */
+	push_hdr(s);
+	push_rest(name);
+
+	while (offset % 512) {
+		putchar(0);
+		offset++;
+	}
+}
+
+static int cpio_mkslink(const char *name, const char *target,
+			 unsigned int mode, uid_t uid, gid_t gid)
+{
+	char s[256];
+	time_t mtime = time(NULL);
+
+	sprintf(s,"%s%08X%08X%08lX%08lX%08X%08lX"
+	       "%08X%08X%08X%08X%08X%08X%08X",
+		"070701",		/* magic */
+		ino++,			/* ino */
+		S_IFLNK | mode,		/* mode */
+		(long) uid,		/* uid */
+		(long) gid,		/* gid */
+		1,			/* nlink */
+		(long) mtime,		/* mtime */
+		(unsigned)strlen(target)+1, /* filesize */
+		3,			/* major */
+		1,			/* minor */
+		0,			/* rmajor */
+		0,			/* rminor */
+		(unsigned)strlen(name) + 1,/* namesize */
+		0);			/* chksum */
+	push_hdr(s);
+	push_string(name);
+	push_pad();
+	push_string(target);
+	push_pad();
+	return 0;
+}
+
+static int cpio_mkslink_line(const char *line)
+{
+	char name[PATH_MAX + 1];
+	char target[PATH_MAX + 1];
+	unsigned int mode;
+	int uid;
+	int gid;
+	int rc = -1;
+
+	if (5 != sscanf(line, "%" str(PATH_MAX) "s %" str(PATH_MAX) "s %o %d %d", name, target, &mode, &uid, &gid)) {
+		fprintf(stderr, "Unrecognized dir format '%s'", line);
+		goto fail;
+	}
+	rc = cpio_mkslink(name, target, mode, uid, gid);
+ fail:
+	return rc;
+}
+
+static int cpio_mkgeneric(const char *name, unsigned int mode,
+		       uid_t uid, gid_t gid)
+{
+	char s[256];
+	time_t mtime = time(NULL);
+
+	sprintf(s,"%s%08X%08X%08lX%08lX%08X%08lX"
+	       "%08X%08X%08X%08X%08X%08X%08X",
+		"070701",		/* magic */
+		ino++,			/* ino */
+		mode,			/* mode */
+		(long) uid,		/* uid */
+		(long) gid,		/* gid */
+		2,			/* nlink */
+		(long) mtime,		/* mtime */
+		0,			/* filesize */
+		3,			/* major */
+		1,			/* minor */
+		0,			/* rmajor */
+		0,			/* rminor */
+		(unsigned)strlen(name) + 1,/* namesize */
+		0);			/* chksum */
+	push_hdr(s);
+	push_rest(name);
+	return 0;
+}
+
+enum generic_types {
+	GT_DIR,
+	GT_PIPE,
+	GT_SOCK
+};
+
+struct generic_type {
+	const char *type;
+	mode_t mode;
+};
+
+static struct generic_type generic_type_table[] = {
+	[GT_DIR] = {
+		.type = "dir",
+		.mode = S_IFDIR
+	},
+	[GT_PIPE] = {
+		.type = "pipe",
+		.mode = S_IFIFO
+	},
+	[GT_SOCK] = {
+		.type = "sock",
+		.mode = S_IFSOCK
+	}
+};
+
+static int cpio_mkgeneric_line(const char *line, enum generic_types gt)
+{
+	char name[PATH_MAX + 1];
+	unsigned int mode;
+	int uid;
+	int gid;
+	int rc = -1;
+
+	if (4 != sscanf(line, "%" str(PATH_MAX) "s %o %d %d", name, &mode, &uid, &gid)) {
+		fprintf(stderr, "Unrecognized %s format '%s'",
+			line, generic_type_table[gt].type);
+		goto fail;
+	}
+	mode |= generic_type_table[gt].mode;
+	rc = cpio_mkgeneric(name, mode, uid, gid);
+ fail:
+	return rc;
+}
+
+static int cpio_mkdir_line(const char *line)
+{
+	return cpio_mkgeneric_line(line, GT_DIR);
+}
+
+static int cpio_mkpipe_line(const char *line)
+{
+	return cpio_mkgeneric_line(line, GT_PIPE);
+}
+
+static int cpio_mksock_line(const char *line)
+{
+	return cpio_mkgeneric_line(line, GT_SOCK);
+}
+
+static int cpio_mknod(const char *name, unsigned int mode,
+		       uid_t uid, gid_t gid, char dev_type,
+		       unsigned int maj, unsigned int min)
+{
+	char s[256];
+	time_t mtime = time(NULL);
+
+	if (dev_type == 'b')
+		mode |= S_IFBLK;
+	else
+		mode |= S_IFCHR;
+
+	sprintf(s,"%s%08X%08X%08lX%08lX%08X%08lX"
+	       "%08X%08X%08X%08X%08X%08X%08X",
+		"070701",		/* magic */
+		ino++,			/* ino */
+		mode,			/* mode */
+		(long) uid,		/* uid */
+		(long) gid,		/* gid */
+		1,			/* nlink */
+		(long) mtime,		/* mtime */
+		0,			/* filesize */
+		3,			/* major */
+		1,			/* minor */
+		maj,			/* rmajor */
+		min,			/* rminor */
+		(unsigned)strlen(name) + 1,/* namesize */
+		0);			/* chksum */
+	push_hdr(s);
+	push_rest(name);
+	return 0;
+}
+
+static int cpio_mknod_line(const char *line)
+{
+	char name[PATH_MAX + 1];
+	unsigned int mode;
+	int uid;
+	int gid;
+	char dev_type;
+	unsigned int maj;
+	unsigned int min;
+	int rc = -1;
+
+	if (7 != sscanf(line, "%" str(PATH_MAX) "s %o %d %d %c %u %u",
+			 name, &mode, &uid, &gid, &dev_type, &maj, &min)) {
+		fprintf(stderr, "Unrecognized nod format '%s'", line);
+		goto fail;
+	}
+	rc = cpio_mknod(name, mode, uid, gid, dev_type, maj, min);
+ fail:
+	return rc;
+}
+
+/* Not marked static to keep the compiler quiet, as no one uses this yet... */
+static int cpio_mkfile(const char *name, const char *location,
+			unsigned int mode, uid_t uid, gid_t gid)
+{
+	char s[256];
+	char *filebuf = NULL;
+	struct stat buf;
+	int file = -1;
+	int retval;
+	int rc = -1;
+
+	mode |= S_IFREG;
+
+	retval = stat (location, &buf);
+	if (retval) {
+		fprintf (stderr, "File %s could not be located\n", location);
+		goto error;
+	}
+
+	file = open (location, O_RDONLY);
+	if (file < 0) {
+		fprintf (stderr, "File %s could not be opened for reading\n", location);
+		goto error;
+	}
+
+	filebuf = malloc(buf.st_size);
+	if (!filebuf) {
+		fprintf (stderr, "out of memory\n");
+		goto error;
+	}
+
+	retval = read (file, filebuf, buf.st_size);
+	if (retval < 0) {
+		fprintf (stderr, "Can not read %s file\n", location);
+		goto error;
+	}
+
+	sprintf(s,"%s%08X%08X%08lX%08lX%08X%08lX"
+	       "%08X%08X%08X%08X%08X%08X%08X",
+		"070701",		/* magic */
+		ino++,			/* ino */
+		mode,			/* mode */
+		(long) uid,		/* uid */
+		(long) gid,		/* gid */
+		1,			/* nlink */
+		(long) buf.st_mtime,	/* mtime */
+		(int) buf.st_size,	/* filesize */
+		3,			/* major */
+		1,			/* minor */
+		0,			/* rmajor */
+		0,			/* rminor */
+		(unsigned)strlen(name) + 1,/* namesize */
+		0);			/* chksum */
+	push_hdr(s);
+	push_string(name);
+	push_pad();
+
+	fwrite(filebuf, buf.st_size, 1, stdout);
+	offset += buf.st_size;
+	push_pad();
+	rc = 0;
+	
+error:
+	if (filebuf) free(filebuf);
+	if (file >= 0) close(file);
+	return rc;
+}
+
+static int cpio_mkfile_line(const char *line)
+{
+	char name[PATH_MAX + 1];
+	char location[PATH_MAX + 1];
+	unsigned int mode;
+	int uid;
+	int gid;
+	int rc = -1;
+
+	if (5 != sscanf(line, "%" str(PATH_MAX) "s %" str(PATH_MAX) "s %o %d %d", name, location, &mode, &uid, &gid)) {
+		fprintf(stderr, "Unrecognized file format '%s'", line);
+		goto fail;
+	}
+	rc = cpio_mkfile(name, location, mode, uid, gid);
+ fail:
+	return rc;
+}
+
+void usage(const char *prog)
+{
+	fprintf(stderr, "Usage:\n"
+		"\t%s <cpio_list>\n"
+		"\n"
+		"<cpio_list> is a file containing newline separated entries that\n"
+		"describe the files to be included in the initramfs archive:\n"
+		"\n"
+		"# a comment\n"
+		"file <name> <location> <mode> <uid> <gid>\n"
+		"dir <name> <mode> <uid> <gid>\n"
+		"nod <name> <mode> <uid> <gid> <dev_type> <maj> <min>\n"
+		"slink <name> <target> <mode> <uid> <gid>\n"
+		"pipe <name> <mode> <uid> <gid>\n"
+		"sock <name> <mode> <uid> <gid>\n"
+		"\n"
+		"<name>      name of the file/dir/nod/etc in the archive\n"
+		"<location>  location of the file in the current filesystem\n"
+		"<target>    link target\n"
+		"<mode>      mode/permissions of the file\n"
+		"<uid>       user id (0=root)\n"
+		"<gid>       group id (0=root)\n"
+		"<dev_type>  device type (b=block, c=character)\n"
+		"<maj>       major number of nod\n"
+		"<min>       minor number of nod\n"
+		"\n"
+		"example:\n"
+		"# A simple initramfs\n"
+		"dir /dev 0755 0 0\n"
+		"nod /dev/console 0600 0 0 c 5 1\n"
+		"dir /root 0700 0 0\n"
+		"dir /sbin 0755 0 0\n"
+		"file /sbin/kinit /usr/src/klibc/kinit/kinit 0755 0 0\n",
+		prog);
+}
+
+struct file_handler file_handler_table[] = {
+	{
+		.type    = "file",
+		.handler = cpio_mkfile_line,
+	}, {
+		.type    = "nod",
+		.handler = cpio_mknod_line,
+	}, {
+		.type    = "dir",
+		.handler = cpio_mkdir_line,
+	}, {
+		.type    = "slink",
+		.handler = cpio_mkslink_line,
+	}, {
+		.type    = "pipe",
+		.handler = cpio_mkpipe_line,
+	}, {
+		.type    = "sock",
+		.handler = cpio_mksock_line,
+	}, {
+		.type    = NULL,
+		.handler = NULL,
+	}
+};
+
+#define LINE_SIZE (2 * PATH_MAX + 50)
+
+int main (int argc, char *argv[])
+{
+	FILE *cpio_list;
+	char line[LINE_SIZE];
+	char *args, *type;
+	int ec = 0;
+	int line_nr = 0;
+
+	if (2 != argc) {
+		usage(argv[0]);
+		exit(1);
+	}
+
+	if (! (cpio_list = fopen(argv[1], "r"))) {
+		fprintf(stderr, "ERROR: unable to open '%s': %s\n\n",
+			argv[1], strerror(errno));
+		usage(argv[0]);
+		exit(1);
+	}
+
+	while (fgets(line, LINE_SIZE, cpio_list)) {
+		int type_idx;
+		size_t slen = strlen(line);
+
+		line_nr++;
+
+		if ('#' == *line) {
+			/* comment - skip to next line */
+			continue;
+		}
+
+		if (! (type = strtok(line, " \t"))) {
+			fprintf(stderr,
+				"ERROR: incorrect format, could not locate file type line %d: '%s'\n",
+				line_nr, line);
+			ec = -1;
+		}
+
+		if ('\n' == *type) {
+			/* a blank line */
+			continue;
+		}
+
+		if (slen == strlen(type)) {
+			/* must be an empty line */
+			continue;
+		}
+
+		if (! (args = strtok(NULL, "\n"))) {
+			fprintf(stderr,
+				"ERROR: incorrect format, newline required line %d: '%s'\n",
+				line_nr, line);
+			ec = -1;
+		}
+
+		for (type_idx = 0; file_handler_table[type_idx].type; type_idx++) {
+			int rc;
+			if (! strcmp(line, file_handler_table[type_idx].type)) {
+				if ((rc = file_handler_table[type_idx].handler(args))) {
+					ec = rc;
+					fprintf(stderr, " line %d\n", line_nr);
+				}
+				break;
+			}
+		}
+
+		if (NULL == file_handler_table[type_idx].type) {
+			fprintf(stderr, "unknown file type line %d: '%s'\n",
+				line_nr, line);
+		}
+	}
+	cpio_trailer();
+
+	exit(ec);
+}