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mkfs.jffs2.c
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/* vi: set sw=4 ts=4: */
/*
* Build a JFFS2 image in a file, from a given directory tree.
*
* Copyright 2001, 2002 Red Hat, Inc.
* 2001 David A. Schleef <ds@lineo.com>
* 2002 Axis Communications AB
* 2001, 2002 Erik Andersen <andersen@codepoet.org>
* 2004 University of Szeged, Hungary
* 2006 KaiGai Kohei <kaigai@ak.jp.nec.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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 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
*
* Cross-endian support added by David Schleef <ds@schleef.org>.
*
* Major architectural rewrite by Erik Andersen <andersen@codepoet.org>
* to allow support for making hard links (though hard links support is
* not yet implemented), and for munging file permissions and ownership
* on the fly using --faketime, --squash, --devtable. And I plugged a
* few memory leaks, adjusted the error handling and fixed some little
* nits here and there.
*
* I also added a sample device table file. See device_table.txt
* -Erik, September 2001
*
* Cleanmarkers support added by Axis Communications AB
*
* Rewritten again. Cleanly separated host and target filsystem
* activities (mainly so I can reuse all the host handling stuff as I
* rewrite other mkfs utils). Added a verbose option to list types
* and attributes as files are added to the file system. Major cleanup
* and scrubbing of the code so it can be read, understood, and
* modified by mere mortals.
*
* -Erik, November 2002
*/
#define _GNU_SOURCE
#include <sys/types.h>
#include <stdio.h>
#include <sys/stat.h>
#include <unistd.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <dirent.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <stdarg.h>
#include <stdint.h>
#include <libgen.h>
#include <ctype.h>
#include <time.h>
#include <getopt.h>
#ifndef WITHOUT_XATTR
#include <sys/xattr.h>
#include <sys/acl.h>
#endif
#include <byteswap.h>
#define crc32 __complete_crap
#include <zlib.h>
#undef crc32
#include "crc32.h"
/* Do not use the wierd XPG version of basename */
#undef basename
//#define DMALLOC
//#define mkfs_debug_msg error_msg
#define mkfs_debug_msg(a...) { }
#define min(x,y) ({ typeof((x)) _x = (x); typeof((y)) _y = (y); (_x>_y)?_y:_x; })
#define PAD(x) (((x)+3)&~3)
struct filesystem_entry {
char *name; /* Name of this directory (think basename) */
char *path; /* Path of this directory (think dirname) */
char *fullname; /* Full name of this directory (i.e. path+name) */
char *hostname; /* Full path to this file on the host filesystem */
struct stat sb; /* Stores directory permissions and whatnot */
char *link; /* Target a symlink points to. */
struct filesystem_entry *parent; /* Parent directory */
struct filesystem_entry *prev; /* Only relevant to non-directories */
struct filesystem_entry *next; /* Only relevant to non-directories */
struct filesystem_entry *files; /* Only relevant to directories */
};
static int out_fd = -1;
static int in_fd = -1;
static char default_rootdir[] = ".";
static char *rootdir = default_rootdir;
static int verbose = 0;
static int squash_uids = 0;
static int squash_perms = 0;
static int fake_times = 0;
int target_endian = __BYTE_ORDER;
static const char *const app_name = "mkfs.jffs2";
static const char *const memory_exhausted = "memory exhausted";
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(const char *s, ...)
{
va_list p;
va_start(p, s);
verror_msg(s, p);
va_end(p);
putc('\n', stderr);
}
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));
}
static void perror_msg(const char *s, ...)
{
va_list p;
va_start(p, s);
vperror_msg(s, p);
va_end(p);
}
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);
}
#ifndef DMALLOC
extern void *xmalloc(size_t size)
{
void *ptr = malloc(size);
if (ptr == NULL && size != 0)
error_msg_and_die(memory_exhausted);
return ptr;
}
extern void *xcalloc(size_t nmemb, size_t size)
{
void *ptr = calloc(nmemb, size);
if (ptr == NULL && nmemb != 0 && size != 0)
error_msg_and_die(memory_exhausted);
return ptr;
}
extern void *xrealloc(void *ptr, size_t size)
{
ptr = realloc(ptr, size);
if (ptr == NULL && size != 0)
error_msg_and_die(memory_exhausted);
return ptr;
}
extern 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;
}
#endif
extern char *xreadlink(const char *path)
{
static const int GROWBY = 80; /* how large we will grow strings by */
char *buf = NULL;
int bufsize = 0, readsize = 0;
do {
buf = xrealloc(buf, bufsize += GROWBY);
readsize = readlink(path, buf, bufsize); /* 1st try */
if (readsize == -1) {
perror_msg("%s:%s", app_name, path);
return NULL;
}
}
while (bufsize < readsize + 1);
buf[readsize] = '\0';
return buf;
}
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 struct filesystem_entry *find_filesystem_entry(
struct filesystem_entry *dir, char *fullname, uint32_t type)
{
struct filesystem_entry *e = dir;
if (S_ISDIR(dir->sb.st_mode)) {
e = dir->files;
}
while (e) {
/* Only bother to do the expensive strcmp on matching file types */
if (type == (e->sb.st_mode & S_IFMT)) {
if (S_ISDIR(e->sb.st_mode)) {
int len = strlen(e->fullname);
/* Check if we are a parent of the correct path */
if (strncmp(e->fullname, fullname, len) == 0) {
/* Is this an _exact_ match? */
if (strcmp(fullname, e->fullname) == 0) {
return (e);
}
/* Looks like we found a parent of the correct path */
if (fullname[len] == '/') {
if (e->files) {
return (find_filesystem_entry (e, fullname, type));
} else {
return NULL;
}
}
}
} else {
if (strcmp(fullname, e->fullname) == 0) {
return (e);
}
}
}
e = e->next;
}
return (NULL);
}
static struct filesystem_entry *add_host_filesystem_entry(
char *name, char *path, unsigned long uid, unsigned long gid,
unsigned long mode, dev_t rdev, struct filesystem_entry *parent)
{
int status;
char *tmp;
struct stat sb;
time_t timestamp = time(NULL);
struct filesystem_entry *entry;
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;
} else {
/* If this is a regular file, it _must_ exist on disk */
if ((mode & S_IFMT) == S_IFREG) {
error_msg_and_die("%s: does not exist!", path);
}
}
/* Squash all permissions so files are owned by root, all
* timestamps are _right now_, and file permissions
* have group and other write removed */
if (squash_uids) {
uid = gid = 0;
}
if (squash_perms) {
if (!S_ISLNK(mode)) {
mode &= ~(S_IWGRP | S_IWOTH);
mode &= ~(S_ISUID | S_ISGID);
}
}
if (fake_times) {
timestamp = 0;
}
entry = xcalloc(1, sizeof(struct filesystem_entry));
entry->hostname = xstrdup(path);
entry->fullname = xstrdup(name);
tmp = xstrdup(name);
entry->name = xstrdup(basename(tmp));
free(tmp);
tmp = xstrdup(name);
entry->path = xstrdup(dirname(tmp));
free(tmp);
entry->sb.st_uid = uid;
entry->sb.st_gid = gid;
entry->sb.st_mode = mode;
entry->sb.st_rdev = rdev;
entry->sb.st_atime = entry->sb.st_ctime =
entry->sb.st_mtime = timestamp;
if (S_ISREG(mode)) {
entry->sb.st_size = sb.st_size;
}
if (S_ISLNK(mode)) {
entry->link = xreadlink(path);
entry->sb.st_size = strlen(entry->link);
}
/* This happens only for root */
if (!parent)
return (entry);
/* Hook the file into the parent directory */
entry->parent = parent;
if (!parent->files) {
parent->files = entry;
} else {
struct filesystem_entry *prev;
for (prev = parent->files; prev->next; prev = prev->next);
prev->next = entry;
entry->prev = prev;
}
return (entry);
}
static struct filesystem_entry *recursive_add_host_directory(
struct filesystem_entry *parent, char *targetpath, char *hostpath)
{
int i, n;
struct stat sb;
char *hpath, *tpath;
struct dirent *dp, **namelist;
struct filesystem_entry *entry;
if (lstat(hostpath, &sb)) {
perror_msg_and_die("%s", hostpath);
}
entry = add_host_filesystem_entry(targetpath, hostpath,
sb.st_uid, sb.st_gid, sb.st_mode, 0, parent);
n = scandir(hostpath, &namelist, 0, alphasort);
if (n < 0) {
perror_msg_and_die("opening directory %s", hostpath);
}
for (i=0; i<n; i++)
{
dp = namelist[i];
if (dp->d_name[0] == '.' && (dp->d_name[1] == 0 ||
(dp->d_name[1] == '.' && dp->d_name[2] == 0)))
{
free(dp);
continue;
}
asprintf(&hpath, "%s/%s", hostpath, dp->d_name);
if (lstat(hpath, &sb)) {
perror_msg_and_die("%s", hpath);
}
if (strcmp(targetpath, "/") == 0) {
asprintf(&tpath, "%s%s", targetpath, dp->d_name);
} else {
asprintf(&tpath, "%s/%s", targetpath, dp->d_name);
}
switch (sb.st_mode & S_IFMT) {
case S_IFDIR:
recursive_add_host_directory(entry, tpath, hpath);
break;
case S_IFREG:
case S_IFSOCK:
case S_IFIFO:
case S_IFLNK:
case S_IFCHR:
case S_IFBLK:
add_host_filesystem_entry(tpath, hpath, sb.st_uid,
sb.st_gid, sb.st_mode, sb.st_rdev, entry);
break;
default:
error_msg("Unknown file type %o for %s", sb.st_mode, hpath);
break;
}
free(dp);
free(hpath);
free(tpath);
}
free(namelist);
return (entry);
}
/* the GNU C library has a wonderful scanf("%as", string) which will
allocate the string with the right size, good to avoid buffer overruns.
the following macros use it if available or use a hacky workaround...
*/
#ifdef __GNUC__
#define SCANF_PREFIX "a"
#define SCANF_STRING(s) (&s)
#define GETCWD_SIZE 0
#else
#define SCANF_PREFIX "511"
#define SCANF_STRING(s) (s = malloc(512))
#define GETCWD_SIZE -1
inline int snprintf(char *str, size_t n, const char *fmt, ...)
{
int ret;
va_list ap;
va_start(ap, fmt);
ret = vsprintf(str, fmt, ap);
va_end(ap);
return ret;
}
#endif
/* 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(struct filesystem_entry *root, char *line)
{
char *hostpath;
char type, *name = NULL, *tmp, *dir;
unsigned long mode = 0755, uid = 0, gid = 0, major = 0, minor = 0;
unsigned long start = 0, increment = 1, count = 0;
struct filesystem_entry *parent, *entry;
if (sscanf (line, "%" SCANF_PREFIX "s %c %lo %lu %lu %lu %lu %lu %lu %lu",
SCANF_STRING(name), &type, &mode, &uid, &gid, &major, &minor,
&start, &increment, &count) < 0)
{
return 1;
}
if (!strcmp(name, "/")) {
error_msg_and_die("Device table entries require absolute paths");
}
asprintf(&hostpath, "%s%s", rootdir, name);
/* Check if this file already exists... */
switch (type) {
case 'd':
mode |= S_IFDIR;
break;
case 'f':
mode |= S_IFREG;
break;
case 'p':
mode |= S_IFIFO;
break;
case 'c':
mode |= S_IFCHR;
break;
case 'b':
mode |= S_IFBLK;
break;
default:
error_msg_and_die("Unsupported file type");
}
entry = find_filesystem_entry(root, name, mode);
if (entry) {
/* Ok, we just need to fixup the existing entry
* and we will be all done... */
entry->sb.st_uid = uid;
entry->sb.st_gid = gid;
entry->sb.st_mode = mode;
if (major && minor) {
entry->sb.st_rdev = makedev(major, minor);
}
} else {
/* If parent is NULL (happens with device table entries),
* try and find our parent now) */
tmp = strdup(name);
dir = dirname(tmp);
parent = find_filesystem_entry(root, dir, S_IFDIR);
free(tmp);
if (parent == NULL) {
error_msg ("skipping device_table entry '%s': no parent directory!", name);
free(name);
free(hostpath);
return 1;
}
switch (type) {
case 'd':
add_host_filesystem_entry(name, hostpath, uid, gid, mode, 0, parent);
break;
case 'f':
add_host_filesystem_entry(name, hostpath, uid, gid, mode, 0, parent);
break;
case 'p':
add_host_filesystem_entry(name, hostpath, uid, gid, mode, 0, parent);
break;
case 'c':
case 'b':
if (count > 0) {
dev_t rdev;
unsigned long i;
char *dname, *hpath;
for (i = start; i < count; i++) {
asprintf(&dname, "%s%lu", name, i);
asprintf(&hpath, "%s/%s%lu", rootdir, name, i);
rdev = makedev(major, minor + (i * increment - start));
add_host_filesystem_entry(dname, hpath, uid, gid,
mode, rdev, parent);
free(dname);
free(hpath);
}
} else {
dev_t rdev = makedev(major, minor);
add_host_filesystem_entry(name, hostpath, uid, gid,
mode, rdev, parent);
}
break;
default:
error_msg_and_die("Unsupported file type");
}
}
free(name);
free(hostpath);
return 0;
}
static int parse_device_table(struct filesystem_entry *root, FILE * file)
{
char *line;
int status = 0;
size_t length = 0;
/* Turn off squash, since we must ensure that values
* entered via the device table are not squashed */
squash_uids = 0;
squash_perms = 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... */
line = NULL;
while (getline(&line, &length, file) != -1) {
/* First trim off any whitespace */
int len = strlen(line);
/* 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);
/* How long are we after trimming? */
len = strlen(line);
/* If this is NOT a comment line, try to interpret it */
if (len && *line != '#') {
if (interpret_table_entry(root, line))
status = 1;
}
free(line);
line = NULL;
}
fclose(file);
return status;
}
static void cleanup(struct filesystem_entry *dir)
{
struct filesystem_entry *e, *prev;
e = dir->files;
while (e) {
if (e->name)
free(e->name);
if (e->path)
free(e->path);
if (e->fullname)
free(e->fullname);
e->next = NULL;
e->name = NULL;
e->path = NULL;
e->fullname = NULL;
e->prev = NULL;
prev = e;
if (S_ISDIR(e->sb.st_mode)) {
cleanup(e);
}
e = e->next;
free(prev);
}
}
/* Here is where we do the actual creation of the file system */
#include "mtd/jffs2-user.h"
#define JFFS2_MAX_FILE_SIZE 0xFFFFFFFF
#ifndef JFFS2_MAX_SYMLINK_LEN
#define JFFS2_MAX_SYMLINK_LEN 254
#endif
static uint32_t ino = 0;
static uint8_t *file_buffer = NULL; /* file buffer contains the actual erase block*/
static int out_ofs = 0;
static int erase_block_size = 65536;
static int pad_fs_size = 0;
static int add_cleanmarkers = 1;
static struct jffs2_unknown_node cleanmarker;
static int cleanmarker_size = sizeof(cleanmarker);
static unsigned char ffbuf[16] =
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff
};
/* We default to 4096, per x86. When building a fs for
* 64-bit arches and whatnot, use the --pagesize=SIZE option */
int page_size = 4096;
#include "compr.h"
static void full_write(int fd, const void *buf, int len)
{
int ret;
while (len > 0) {
ret = write(fd, buf, len);
if (ret < 0)
perror_msg_and_die("write");
if (ret == 0)
perror_msg_and_die("write returned zero");
len -= ret;
buf += ret;
out_ofs += ret;
}
}
static void padblock(void)
{
while (out_ofs % erase_block_size) {
full_write(out_fd, ffbuf, min(sizeof(ffbuf),
erase_block_size - (out_ofs % erase_block_size)));
}
}
static void pad(int req)
{
while (req) {
if (req > sizeof(ffbuf)) {
full_write(out_fd, ffbuf, sizeof(ffbuf));
req -= sizeof(ffbuf);
} else {
full_write(out_fd, ffbuf, req);
req = 0;
}
}
}
static inline void padword(void)
{
if (out_ofs % 4) {
full_write(out_fd, ffbuf, 4 - (out_ofs % 4));
}
}
static inline void pad_block_if_less_than(int req)
{
if (add_cleanmarkers) {
if ((out_ofs % erase_block_size) == 0) {
full_write(out_fd, &cleanmarker, sizeof(cleanmarker));
pad(cleanmarker_size - sizeof(cleanmarker));
padword();
}
}
if ((out_ofs % erase_block_size) + req > erase_block_size) {
padblock();
}
if (add_cleanmarkers) {
if ((out_ofs % erase_block_size) == 0) {
full_write(out_fd, &cleanmarker, sizeof(cleanmarker));
pad(cleanmarker_size - sizeof(cleanmarker));
padword();
}
}
}
static void write_dirent(struct filesystem_entry *e)
{
char *name = e->name;
struct jffs2_raw_dirent rd;
struct stat *statbuf = &(e->sb);
static uint32_t version = 0;
memset(&rd, 0, sizeof(rd));
rd.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
rd.nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT);
rd.totlen = cpu_to_je32(sizeof(rd) + strlen(name));
rd.hdr_crc = cpu_to_je32(crc32(0, &rd,
sizeof(struct jffs2_unknown_node) - 4));
rd.pino = cpu_to_je32((e->parent) ? e->parent->sb.st_ino : 1);
rd.version = cpu_to_je32(version++);
rd.ino = cpu_to_je32(statbuf->st_ino);
rd.mctime = cpu_to_je32(statbuf->st_mtime);
rd.nsize = strlen(name);
rd.type = IFTODT(statbuf->st_mode);
//rd.unused[0] = 0;
//rd.unused[1] = 0;
rd.node_crc = cpu_to_je32(crc32(0, &rd, sizeof(rd) - 8));
rd.name_crc = cpu_to_je32(crc32(0, name, strlen(name)));
pad_block_if_less_than(sizeof(rd) + rd.nsize);
full_write(out_fd, &rd, sizeof(rd));
full_write(out_fd, name, rd.nsize);
padword();
}
static unsigned int write_regular_file(struct filesystem_entry *e)
{
int fd, len;
uint32_t ver;
unsigned int offset;
unsigned char *buf, *cbuf, *wbuf;
struct jffs2_raw_inode ri;
struct stat *statbuf;
unsigned int totcomp = 0;
statbuf = &(e->sb);
if (statbuf->st_size >= JFFS2_MAX_FILE_SIZE) {
error_msg("Skipping file \"%s\" too large.", e->path);
return -1;
}
fd = open(e->hostname, O_RDONLY);
if (fd == -1) {
perror_msg_and_die("%s: open file", e->hostname);
}
statbuf->st_ino = ++ino;
mkfs_debug_msg("writing file '%s' ino=%lu parent_ino=%lu",
e->name, (unsigned long) statbuf->st_ino,
(unsigned long) e->parent->sb.st_ino);
write_dirent(e);
buf = xmalloc(page_size);
cbuf = NULL;
ver = 0;
offset = 0;
memset(&ri, 0, sizeof(ri));
ri.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
ri.nodetype = cpu_to_je16(JFFS2_NODETYPE_INODE);
ri.ino = cpu_to_je32(statbuf->st_ino);
ri.mode = cpu_to_jemode(statbuf->st_mode);
ri.uid = cpu_to_je16(statbuf->st_uid);
ri.gid = cpu_to_je16(statbuf->st_gid);
ri.atime = cpu_to_je32(statbuf->st_atime);
ri.ctime = cpu_to_je32(statbuf->st_ctime);
ri.mtime = cpu_to_je32(statbuf->st_mtime);
ri.isize = cpu_to_je32(statbuf->st_size);
while ((len = read(fd, buf, page_size))) {
unsigned char *tbuf = buf;
if (len < 0) {
perror_msg_and_die("read");
}
while (len) {
uint32_t dsize, space;
uint16_t compression;
pad_block_if_less_than(sizeof(ri) + JFFS2_MIN_DATA_LEN);
dsize = len;
space =
erase_block_size - (out_ofs % erase_block_size) -
sizeof(ri);
if (space > dsize)
space = dsize;
compression = jffs2_compress(tbuf, &cbuf, &dsize, &space);
ri.compr = compression & 0xff;
ri.usercompr = (compression >> 8) & 0xff;
if (ri.compr) {
wbuf = cbuf;
} else {
wbuf = tbuf;
dsize = space;
}
ri.totlen = cpu_to_je32(sizeof(ri) + space);
ri.hdr_crc = cpu_to_je32(crc32(0,
&ri, sizeof(struct jffs2_unknown_node) - 4));
ri.version = cpu_to_je32(++ver);
ri.offset = cpu_to_je32(offset);
ri.csize = cpu_to_je32(space);
ri.dsize = cpu_to_je32(dsize);
ri.node_crc = cpu_to_je32(crc32(0, &ri, sizeof(ri) - 8));
ri.data_crc = cpu_to_je32(crc32(0, wbuf, space));
full_write(out_fd, &ri, sizeof(ri));
totcomp += sizeof(ri);
full_write(out_fd, wbuf, space);
totcomp += space;
padword();
if (tbuf != cbuf) {
free(cbuf);
cbuf = NULL;
}
tbuf += dsize;
len -= dsize;
offset += dsize;
}
}
if (!je32_to_cpu(ri.version)) {
/* Was empty file */
pad_block_if_less_than(sizeof(ri));
ri.version = cpu_to_je32(++ver);
ri.totlen = cpu_to_je32(sizeof(ri));
ri.hdr_crc = cpu_to_je32(crc32(0,
&ri, sizeof(struct jffs2_unknown_node) - 4));
ri.csize = cpu_to_je32(0);
ri.dsize = cpu_to_je32(0);
ri.node_crc = cpu_to_je32(crc32(0, &ri, sizeof(ri) - 8));
full_write(out_fd, &ri, sizeof(ri));
padword();
}
free(buf);
close(fd);
return totcomp;
}
static void write_symlink(struct filesystem_entry *e)
{
int len;
struct stat *statbuf;
struct jffs2_raw_inode ri;
statbuf = &(e->sb);
statbuf->st_ino = ++ino;
mkfs_debug_msg("writing symlink '%s' ino=%lu parent_ino=%lu",
e->name, (unsigned long) statbuf->st_ino,
(unsigned long) e->parent->sb.st_ino);
write_dirent(e);
len = strlen(e->link);
if (len > JFFS2_MAX_SYMLINK_LEN) {
error_msg("symlink too large. Truncated to %d chars.",
JFFS2_MAX_SYMLINK_LEN);
len = JFFS2_MAX_SYMLINK_LEN;
}
memset(&ri, 0, sizeof(ri));
ri.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
ri.nodetype = cpu_to_je16(JFFS2_NODETYPE_INODE);
ri.totlen = cpu_to_je32(sizeof(ri) + len);
ri.hdr_crc = cpu_to_je32(crc32(0,
&ri, sizeof(struct jffs2_unknown_node) - 4));
ri.ino = cpu_to_je32(statbuf->st_ino);
ri.mode = cpu_to_jemode(statbuf->st_mode);
ri.uid = cpu_to_je16(statbuf->st_uid);
ri.gid = cpu_to_je16(statbuf->st_gid);
ri.atime = cpu_to_je32(statbuf->st_atime);
ri.ctime = cpu_to_je32(statbuf->st_ctime);
ri.mtime = cpu_to_je32(statbuf->st_mtime);
ri.isize = cpu_to_je32(statbuf->st_size);
ri.version = cpu_to_je32(1);
ri.csize = cpu_to_je32(len);
ri.dsize = cpu_to_je32(len);
ri.node_crc = cpu_to_je32(crc32(0, &ri, sizeof(ri) - 8));
ri.data_crc = cpu_to_je32(crc32(0, e->link, len));
pad_block_if_less_than(sizeof(ri) + len);
full_write(out_fd, &ri, sizeof(ri));
full_write(out_fd, e->link, len);
padword();
}
static void write_pipe(struct filesystem_entry *e)
{
struct stat *statbuf;
struct jffs2_raw_inode ri;
statbuf = &(e->sb);
statbuf->st_ino = ++ino;
if (S_ISDIR(statbuf->st_mode)) {
mkfs_debug_msg("writing dir '%s' ino=%lu parent_ino=%lu",
e->name, (unsigned long) statbuf->st_ino,
(unsigned long) (e->parent) ? e->parent->sb. st_ino : 1);
}
write_dirent(e);
memset(&ri, 0, sizeof(ri));
ri.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
ri.nodetype = cpu_to_je16(JFFS2_NODETYPE_INODE);
ri.totlen = cpu_to_je32(sizeof(ri));
ri.hdr_crc = cpu_to_je32(crc32(0,
&ri, sizeof(struct jffs2_unknown_node) - 4));
ri.ino = cpu_to_je32(statbuf->st_ino);
ri.mode = cpu_to_jemode(statbuf->st_mode);
ri.uid = cpu_to_je16(statbuf->st_uid);
ri.gid = cpu_to_je16(statbuf->st_gid);
ri.atime = cpu_to_je32(statbuf->st_atime);
ri.ctime = cpu_to_je32(statbuf->st_ctime);
ri.mtime = cpu_to_je32(statbuf->st_mtime);
ri.isize = cpu_to_je32(0);
ri.version = cpu_to_je32(1);
ri.csize = cpu_to_je32(0);
ri.dsize = cpu_to_je32(0);
ri.node_crc = cpu_to_je32(crc32(0, &ri, sizeof(ri) - 8));
ri.data_crc = cpu_to_je32(0);
pad_block_if_less_than(sizeof(ri));
full_write(out_fd, &ri, sizeof(ri));
padword();
}
static void write_special_file(struct filesystem_entry *e)
{
jint16_t kdev;
struct stat *statbuf;
struct jffs2_raw_inode ri;
statbuf = &(e->sb);