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Diffstat (limited to 'jffs2reader.c')
-rw-r--r--jffs2reader.c149
1 files changed, 77 insertions, 72 deletions
diff --git a/jffs2reader.c b/jffs2reader.c
index d5a3d95..5231ff0 100644
--- a/jffs2reader.c
+++ b/jffs2reader.c
@@ -64,7 +64,6 @@ BUGS:
#define PROGRAM_NAME "jffs2reader"
-#include <errno.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
@@ -74,23 +73,19 @@ BUGS:
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
-#include <sys/param.h>
#include <dirent.h>
-#include <linux/jffs2.h>
+#include <zlib.h>
+
+#include "mtd/jffs2-user.h"
#include "common.h"
#define SCRATCH_SIZE (5*1024*1024)
-#ifndef MAJOR
-/* FIXME: I am using illicit insider knowledge of
- * kernel major/minor representation... */
-#define MAJOR(dev) (((dev)>>8)&0xff)
-#define MINOR(dev) ((dev)&0xff)
-#endif
-
+/* macro to avoid "lvalue required as left operand of assignment" error */
+#define ADD_BYTES(p, n) ((p) = (typeof(p))((char *)(p) + (n)))
-#define DIRENT_INO(dirent) ((dirent)!=NULL?(dirent)->ino:0)
-#define DIRENT_PINO(dirent) ((dirent)!=NULL?(dirent)->pino:0)
+#define DIRENT_INO(dirent) ((dirent) !=NULL ? je32_to_cpu((dirent)->ino) : 0)
+#define DIRENT_PINO(dirent) ((dirent) !=NULL ? je32_to_cpu((dirent)->pino) : 0)
struct dir {
struct dir *next;
@@ -100,10 +95,12 @@ struct dir {
char name[256];
};
+int target_endian = __BYTE_ORDER;
+
void putblock(char *, size_t, size_t *, struct jffs2_raw_inode *);
struct dir *putdir(struct dir *, struct jffs2_raw_dirent *);
-void printdir(char *o, size_t size, struct dir *d, char *path,
- int recurse);
+void printdir(char *o, size_t size, struct dir *d, const char *path,
+ int recurse, int want_ctime);
void freedir(struct dir *);
struct jffs2_raw_inode *find_raw_inode(char *o, size_t size, uint32_t ino);
@@ -112,12 +109,12 @@ struct jffs2_raw_dirent *resolvedirent(char *, size_t, uint32_t, uint32_t,
struct jffs2_raw_dirent *resolvename(char *, size_t, uint32_t, char *, uint8_t);
struct jffs2_raw_dirent *resolveinode(char *, size_t, uint32_t);
-struct jffs2_raw_dirent *resolvepath0(char *, size_t, uint32_t, char *,
+struct jffs2_raw_dirent *resolvepath0(char *, size_t, uint32_t, const char *,
uint32_t *, int);
-struct jffs2_raw_dirent *resolvepath(char *, size_t, uint32_t, char *,
+struct jffs2_raw_dirent *resolvepath(char *, size_t, uint32_t, const char *,
uint32_t *);
-void lsdir(char *, size_t, char *, int);
+void lsdir(char *, size_t, const char *, int, int);
void catfile(char *, size_t, char *, char *, size_t, size_t *);
int main(int, char **);
@@ -135,28 +132,28 @@ int main(int, char **);
void putblock(char *b, size_t bsize, size_t * rsize,
struct jffs2_raw_inode *n)
{
- uLongf dlen = n->dsize;
+ uLongf dlen = je32_to_cpu(n->dsize);
- if (n->isize > bsize || (n->offset + dlen) > bsize)
+ if (je32_to_cpu(n->isize) > bsize || (je32_to_cpu(n->offset) + dlen) > bsize)
errmsg_die("File does not fit into buffer!");
- if (*rsize < n->isize)
- bzero(b + *rsize, n->isize - *rsize);
+ if (*rsize < je32_to_cpu(n->isize))
+ bzero(b + *rsize, je32_to_cpu(n->isize) - *rsize);
switch (n->compr) {
case JFFS2_COMPR_ZLIB:
- uncompress((Bytef *) b + n->offset, &dlen,
+ uncompress((Bytef *) b + je32_to_cpu(n->offset), &dlen,
(Bytef *) ((char *) n) + sizeof(struct jffs2_raw_inode),
- (uLongf) n->csize);
+ (uLongf) je32_to_cpu(n->csize));
break;
case JFFS2_COMPR_NONE:
- memcpy(b + n->offset,
+ memcpy(b + je32_to_cpu(n->offset),
((char *) n) + sizeof(struct jffs2_raw_inode), dlen);
break;
case JFFS2_COMPR_ZERO:
- bzero(b + n->offset, dlen);
+ bzero(b + je32_to_cpu(n->offset), dlen);
break;
/* [DYN]RUBIN support required! */
@@ -165,7 +162,7 @@ void putblock(char *b, size_t bsize, size_t * rsize,
errmsg_die("Unsupported compression method!");
}
- *rsize = n->isize;
+ *rsize = je32_to_cpu(n->isize);
}
/* adds/removes directory node into dir struct. */
@@ -184,13 +181,13 @@ struct dir *putdir(struct dir *dd, struct jffs2_raw_dirent *n)
o = dd;
- if (n->ino) {
+ if (je32_to_cpu(n->ino)) {
if (dd == NULL) {
d = xmalloc(sizeof(struct dir));
d->type = n->type;
memcpy(d->name, n->name, n->nsize);
d->nsize = n->nsize;
- d->ino = n->ino;
+ d->ino = je32_to_cpu(n->ino);
d->next = NULL;
return d;
@@ -200,7 +197,7 @@ struct dir *putdir(struct dir *dd, struct jffs2_raw_dirent *n)
if (n->nsize == dd->nsize &&
!memcmp(n->name, dd->name, n->nsize)) {
dd->type = n->type;
- dd->ino = n->ino;
+ dd->ino = je32_to_cpu(n->ino);
return o;
}
@@ -210,7 +207,7 @@ struct dir *putdir(struct dir *dd, struct jffs2_raw_dirent *n)
dd->next->type = n->type;
memcpy(dd->next->name, n->name, n->nsize);
dd->next->nsize = n->nsize;
- dd->next->ino = n->ino;
+ dd->next->ino = je32_to_cpu(n->ino);
dd->next->next = NULL;
return o;
@@ -295,12 +292,14 @@ const char *mode_string(int mode)
d - dir struct
*/
-void printdir(char *o, size_t size, struct dir *d, char *path, int recurse)
+void printdir(char *o, size_t size, struct dir *d, const char *path, int recurse,
+ int want_ctime)
{
char m;
char *filetime;
time_t age;
struct jffs2_raw_inode *ri;
+ jint32_t mode;
if (!path)
return;
@@ -348,24 +347,27 @@ void printdir(char *o, size_t size, struct dir *d, char *path, int recurse)
}
filetime = ctime((const time_t *) &(ri->ctime));
- age = time(NULL) - ri->ctime;
- printf("%s %-4d %-8d %-8d ", mode_string(ri->mode),
- 1, ri->uid, ri->gid);
+ age = time(NULL) - je32_to_cpu(ri->ctime);
+ mode.v32 = ri->mode.m;
+ printf("%s %-4d %-8d %-8d ", mode_string(je32_to_cpu(mode)),
+ 1, je16_to_cpu(ri->uid), je16_to_cpu(ri->gid));
if ( d->type==DT_BLK || d->type==DT_CHR ) {
dev_t rdev;
size_t devsize;
putblock((char*)&rdev, sizeof(rdev), &devsize, ri);
- printf("%4d, %3d ", (int)MAJOR(rdev), (int)MINOR(rdev));
+ printf("%4d, %3d ", major(rdev), minor(rdev));
} else {
- printf("%9ld ", (long)ri->dsize);
+ printf("%9ld ", (long)je32_to_cpu(ri->dsize));
}
d->name[d->nsize]='\0';
- if (age < 3600L * 24 * 365 / 2 && age > -15 * 60) {
- /* hh:mm if less than 6 months old */
- printf("%6.6s %5.5s %s/%s%c", filetime + 4, filetime + 11, path, d->name, m);
- } else {
- printf("%6.6s %4.4s %s/%s%c", filetime + 4, filetime + 20, path, d->name, m);
+ if (want_ctime) {
+ if (age < 3600L * 24 * 365 / 2 && age > -15 * 60)
+ /* hh:mm if less than 6 months old */
+ printf("%6.6s %5.5s ", filetime + 4, filetime + 11);
+ else
+ printf("%6.6s %4.4s ", filetime + 4, filetime + 20);
}
+ printf("%s/%s%c", path, d->name, m);
if (d->type == DT_LNK) {
char symbuf[1024];
size_t symsize;
@@ -379,7 +381,7 @@ void printdir(char *o, size_t size, struct dir *d, char *path, int recurse)
char *tmp;
tmp = xmalloc(BUFSIZ);
sprintf(tmp, "%s/%s", path, d->name);
- lsdir(o, size, tmp, recurse); /* Go recursive */
+ lsdir(o, size, tmp, recurse, want_ctime); /* Go recursive */
free(tmp);
}
@@ -439,12 +441,12 @@ struct jffs2_raw_inode *find_raw_inode(char *o, size_t size, uint32_t ino)
lr = n;
do {
- while (n < e && n->u.magic != JFFS2_MAGIC_BITMASK)
- ((char *) n) += 4;
+ while (n < e && je16_to_cpu(n->u.magic) != JFFS2_MAGIC_BITMASK)
+ ADD_BYTES(n, 4);
- if (n < e && n->u.magic == JFFS2_MAGIC_BITMASK) {
- if (n->u.nodetype == JFFS2_NODETYPE_INODE &&
- n->i.ino == ino && (v = n->i.version) > vcur) {
+ if (n < e && je16_to_cpu(n->u.magic) == JFFS2_MAGIC_BITMASK) {
+ if (je16_to_cpu(n->u.nodetype) == JFFS2_NODETYPE_INODE &&
+ je32_to_cpu(n->i.ino) == ino && (v = je32_to_cpu(n->i.version)) > vcur) {
/* XXX crc check */
if (vmaxt < v)
@@ -458,7 +460,7 @@ struct jffs2_raw_inode *find_raw_inode(char *o, size_t size, uint32_t ino)
return (&(n->i));
}
- ((char *) n) += ((n->u.totlen + 3) & ~3);
+ ADD_BYTES(n, ((je32_to_cpu(n->u.totlen) + 3) & ~3));
} else
n = (union jffs2_node_union *) o; /* we're at the end, rewind to the beginning */
@@ -507,12 +509,12 @@ struct dir *collectdir(char *o, size_t size, uint32_t ino, struct dir *d)
lr = n;
do {
- while (n < e && n->u.magic != JFFS2_MAGIC_BITMASK)
- ((char *) n) += 4;
+ while (n < e && je16_to_cpu(n->u.magic) != JFFS2_MAGIC_BITMASK)
+ ADD_BYTES(n, 4);
- if (n < e && n->u.magic == JFFS2_MAGIC_BITMASK) {
- if (n->u.nodetype == JFFS2_NODETYPE_DIRENT &&
- n->d.pino == ino && (v = n->d.version) > vcur) {
+ if (n < e && je16_to_cpu(n->u.magic) == JFFS2_MAGIC_BITMASK) {
+ if (je16_to_cpu(n->u.nodetype) == JFFS2_NODETYPE_DIRENT &&
+ je32_to_cpu(n->d.pino) == ino && (v = je32_to_cpu(n->d.version)) > vcur) {
/* XXX crc check */
if (vmaxt < v)
@@ -531,7 +533,7 @@ struct dir *collectdir(char *o, size_t size, uint32_t ino, struct dir *d)
}
}
- ((char *) n) += ((n->u.totlen + 3) & ~3);
+ ADD_BYTES(n, ((je32_to_cpu(n->u.totlen) + 3) & ~3));
} else
n = (union jffs2_node_union *) o; /* we're at the end, rewind to the beginning */
@@ -545,7 +547,7 @@ struct dir *collectdir(char *o, size_t size, uint32_t ino, struct dir *d)
lr = n =
(union jffs2_node_union *) (((char *) mp) +
- ((mp->u.totlen + 3) & ~3));
+ ((je32_to_cpu(mp->u.totlen) + 3) & ~3));
vcur = vmin;
}
@@ -594,14 +596,14 @@ struct jffs2_raw_dirent *resolvedirent(char *o, size_t size,
n = (union jffs2_node_union *) o;
do {
- while (n < e && n->u.magic != JFFS2_MAGIC_BITMASK)
- ((char *) n) += 4;
-
- if (n < e && n->u.magic == JFFS2_MAGIC_BITMASK) {
- if (n->u.nodetype == JFFS2_NODETYPE_DIRENT &&
- (!ino || n->d.ino == ino) &&
- (v = n->d.version) > vmax &&
- (!pino || (n->d.pino == pino &&
+ while (n < e && je16_to_cpu(n->u.magic) != JFFS2_MAGIC_BITMASK)
+ ADD_BYTES(n, 4);
+
+ if (n < e && je16_to_cpu(n->u.magic) == JFFS2_MAGIC_BITMASK) {
+ if (je16_to_cpu(n->u.nodetype) == JFFS2_NODETYPE_DIRENT &&
+ (!ino || je32_to_cpu(n->d.ino) == ino) &&
+ (v = je32_to_cpu(n->d.version)) > vmax &&
+ (!pino || (je32_to_cpu(n->d.pino) == pino &&
nsize == n->d.nsize &&
!memcmp(name, n->d.name, nsize)))) {
/* XXX crc check */
@@ -612,7 +614,7 @@ struct jffs2_raw_dirent *resolvedirent(char *o, size_t size,
}
}
- ((char *) n) += ((n->u.totlen + 3) & ~3);
+ ADD_BYTES(n, ((je32_to_cpu(n->u.totlen) + 3) & ~3));
} else
return dd;
} while (1);
@@ -672,7 +674,7 @@ struct jffs2_raw_dirent *resolveinode(char *o, size_t size, uint32_t ino)
*/
struct jffs2_raw_dirent *resolvepath0(char *o, size_t size, uint32_t ino,
- char *p, uint32_t * inos, int recc)
+ const char *p, uint32_t * inos, int recc)
{
struct jffs2_raw_dirent *dir = NULL;
@@ -788,7 +790,7 @@ struct jffs2_raw_dirent *resolvepath0(char *o, size_t size, uint32_t ino,
*/
struct jffs2_raw_dirent *resolvepath(char *o, size_t size, uint32_t ino,
- char *p, uint32_t * inos)
+ const char *p, uint32_t * inos)
{
return resolvepath0(o, size, ino, p, inos, 0);
}
@@ -801,7 +803,7 @@ struct jffs2_raw_dirent *resolvepath(char *o, size_t size, uint32_t ino,
p - path to be resolved
*/
-void lsdir(char *o, size_t size, char *path, int recurse)
+void lsdir(char *o, size_t size, const char *path, int recurse, int want_ctime)
{
struct jffs2_raw_dirent *dd;
struct dir *d = NULL;
@@ -815,7 +817,7 @@ void lsdir(char *o, size_t size, char *path, int recurse)
errmsg_die("%s: No such file or directory", path);
d = collectdir(o, size, ino, d);
- printdir(o, size, d, path, recurse);
+ printdir(o, size, d, path, recurse, want_ctime);
freedir(d);
}
@@ -855,7 +857,7 @@ void catfile(char *o, size_t size, char *path, char *b, size_t bsize,
int main(int argc, char **argv)
{
- int fd, opt, recurse = 0;
+ int fd, opt, recurse = 0, want_ctime = 0;
struct stat st;
char *scratch, *dir = NULL, *file = NULL;
@@ -863,7 +865,7 @@ int main(int argc, char **argv)
char *buf;
- while ((opt = getopt(argc, argv, "rd:f:")) > 0) {
+ while ((opt = getopt(argc, argv, "rd:f:t")) > 0) {
switch (opt) {
case 'd':
dir = optarg;
@@ -874,6 +876,9 @@ int main(int argc, char **argv)
case 'r':
recurse++;
break;
+ case 't':
+ want_ctime++;
+ break;
default:
fprintf(stderr,
"Usage: %s <image> [-d|-f] < path >\n",
@@ -895,7 +900,7 @@ int main(int argc, char **argv)
sys_errmsg_die("%s", argv[optind]);
if (dir)
- lsdir(buf, st.st_size, dir, recurse);
+ lsdir(buf, st.st_size, dir, recurse, want_ctime);
if (file) {
scratch = xmalloc(SCRATCH_SIZE);
@@ -905,7 +910,7 @@ int main(int argc, char **argv)
}
if (!dir && !file)
- lsdir(buf, st.st_size, "/", 1);
+ lsdir(buf, st.st_size, "/", 1, want_ctime);
free(buf);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-03 15:12:05 +0000