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-rw-r--r--fs/jffs2/compr_rtime.c91
-rw-r--r--fs/jffs2/compr_rubin.c124
-rw-r--r--fs/jffs2/compr_zlib.c52
-rw-r--r--fs/jffs2/jffs2_1pass.c995
4 files changed, 1262 insertions, 0 deletions
diff --git a/fs/jffs2/compr_rtime.c b/fs/jffs2/compr_rtime.c
new file mode 100644
index 0000000..9bb4f1b
--- /dev/null
+++ b/fs/jffs2/compr_rtime.c
@@ -0,0 +1,91 @@
+/*
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ * Copyright (C) 2001 Red Hat, Inc.
+ *
+ * Created by Arjan van de Ven <arjanv@redhat.com>
+ *
+ * The original JFFS, from which the design for JFFS2 was derived,
+ * was designed and implemented by Axis Communications AB.
+ *
+ * The contents of this file are subject to the Red Hat eCos Public
+ * License Version 1.1 (the "Licence"); you may not use this file
+ * except in compliance with the Licence. You may obtain a copy of
+ * the Licence at http://www.redhat.com/
+ *
+ * Software distributed under the Licence is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
+ * See the Licence for the specific language governing rights and
+ * limitations under the Licence.
+ *
+ * The Original Code is JFFS2 - Journalling Flash File System, version 2
+ *
+ * Alternatively, the contents of this file may be used under the
+ * terms of the GNU General Public License version 2 (the "GPL"), in
+ * which case the provisions of the GPL are applicable instead of the
+ * above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the RHEPL, indicate your decision by
+ * deleting the provisions above and replace them with the notice and
+ * other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file
+ * under either the RHEPL or the GPL.
+ *
+ * $Id: compr_rtime.c,v 1.2 2002/01/24 22:58:42 rfeany Exp $
+ *
+ *
+ * Very simple lz77-ish encoder.
+ *
+ * Theory of operation: Both encoder and decoder have a list of "last
+ * occurances" for every possible source-value; after sending the
+ * first source-byte, the second byte indicated the "run" length of
+ * matches
+ *
+ * The algorithm is intended to only send "whole bytes", no bit-messing.
+ *
+ */
+
+#include <config.h>
+#if (CONFIG_COMMANDS & CFG_CMD_JFFS2)
+
+#include <jffs2/jffs2.h>
+
+void rtime_decompress(unsigned char *data_in, unsigned char *cpage_out,
+ u32 srclen, u32 destlen)
+{
+ int positions[256];
+ int outpos;
+ int pos;
+ int i;
+
+ outpos = pos = 0;
+
+ for (i = 0; i < 256; positions[i++] = 0);
+
+ while (outpos<destlen) {
+ unsigned char value;
+ int backoffs;
+ int repeat;
+
+ value = data_in[pos++];
+ cpage_out[outpos++] = value; /* first the verbatim copied byte */
+ repeat = data_in[pos++];
+ backoffs = positions[value];
+
+ positions[value]=outpos;
+ if (repeat) {
+ if (backoffs + repeat >= outpos) {
+ while(repeat) {
+ cpage_out[outpos++] = cpage_out[backoffs++];
+ repeat--;
+ }
+ } else {
+ for (i = 0; i < repeat; i++)
+ *(cpage_out + outpos + i) = *(cpage_out + backoffs + i);
+ outpos+=repeat;
+ }
+ }
+ }
+}
+
+#endif /* CFG_CMD_JFFS2 */
diff --git a/fs/jffs2/compr_rubin.c b/fs/jffs2/compr_rubin.c
new file mode 100644
index 0000000..cf01f88
--- /dev/null
+++ b/fs/jffs2/compr_rubin.c
@@ -0,0 +1,124 @@
+/*
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ * Copyright (C) 2001 Red Hat, Inc.
+ *
+ * Created by Arjan van de Ven <arjanv@redhat.com>
+ *
+ * Heavily modified by Russ Dill <Russ.Dill@asu.edu> in an attempt at
+ * a little more speed.
+ *
+ * The original JFFS, from which the design for JFFS2 was derived,
+ * was designed and implemented by Axis Communications AB.
+ *
+ * The contents of this file are subject to the Red Hat eCos Public
+ * License Version 1.1 (the "Licence"); you may not use this file
+ * except in compliance with the Licence. You may obtain a copy of
+ * the Licence at http://www.redhat.com/
+ *
+ * Software distributed under the Licence is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
+ * See the Licence for the specific language governing rights and
+ * limitations under the Licence.
+ *
+ * The Original Code is JFFS2 - Journalling Flash File System, version 2
+ *
+ * Alternatively, the contents of this file may be used under the
+ * terms of the GNU General Public License version 2 (the "GPL"), in
+ * which case the provisions of the GPL are applicable instead of the
+ * above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the RHEPL, indicate your decision by
+ * deleting the provisions above and replace them with the notice and
+ * other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file
+ * under either the RHEPL or the GPL.
+ *
+ * $Id: compr_rubin.c,v 1.2 2002/01/24 22:58:42 rfeany Exp $
+ *
+ */
+
+#include <config.h>
+#if (CONFIG_COMMANDS & CFG_CMD_JFFS2)
+
+#include <jffs2/jffs2.h>
+#include <jffs2/compr_rubin.h>
+
+
+void rubin_do_decompress(unsigned char *bits, unsigned char *in,
+ unsigned char *page_out, __u32 destlen)
+{
+ register char *curr = page_out;
+ char *end = page_out + destlen;
+ register unsigned long temp;
+ register unsigned long result;
+ register unsigned long p;
+ register unsigned long q;
+ register unsigned long rec_q;
+ register unsigned long bit;
+ register long i0;
+ unsigned long i;
+
+ /* init_pushpull */
+ temp = *(u32 *) in;
+ bit = 16;
+
+ /* init_rubin */
+ q = 0;
+ p = (long) (2 * UPPER_BIT_RUBIN);
+
+ /* init_decode */
+ rec_q = (in[0] << 8) | in[1];
+
+ while (curr < end) {
+ /* in byte */
+
+ result = 0;
+ for (i = 0; i < 8; i++) {
+ /* decode */
+
+ while ((q & UPPER_BIT_RUBIN) || ((p + q) <= UPPER_BIT_RUBIN)) {
+ q &= ~UPPER_BIT_RUBIN;
+ q <<= 1;
+ p <<= 1;
+ rec_q &= ~UPPER_BIT_RUBIN;
+ rec_q <<= 1;
+ rec_q |= (temp >> (bit++ ^ 7)) & 1;
+ if (bit > 31) {
+ bit = 0;
+ temp = *(++((u32 *) in));
+ }
+ }
+ i0 = (bits[i] * p) >> 8;
+
+ if (i0 <= 0) i0 = 1;
+ /* if it fails, it fails, we have our crc
+ if (i0 >= p) i0 = p - 1; */
+
+ result >>= 1;
+ if (rec_q < q + i0) {
+ /* result |= 0x00; */
+ p = i0;
+ } else {
+ result |= 0x80;
+ p -= i0;
+ q += i0;
+ }
+ }
+ *(curr++) = result;
+ }
+}
+
+void dynrubin_decompress(unsigned char *data_in, unsigned char *cpage_out,
+ unsigned long sourcelen, unsigned long dstlen)
+{
+ unsigned char bits[8];
+ int c;
+
+ for (c=0; c<8; c++)
+ bits[c] = (256 - data_in[c]);
+
+ rubin_do_decompress(bits, data_in+8, cpage_out, dstlen);
+}
+
+#endif /* CFG_CMD_JFFS2 */
diff --git a/fs/jffs2/compr_zlib.c b/fs/jffs2/compr_zlib.c
new file mode 100644
index 0000000..1b35585
--- /dev/null
+++ b/fs/jffs2/compr_zlib.c
@@ -0,0 +1,52 @@
+/*
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ * Copyright (C) 2001 Red Hat, Inc.
+ *
+ * Created by David Woodhouse <dwmw2@cambridge.redhat.com>
+ *
+ * The original JFFS, from which the design for JFFS2 was derived,
+ * was designed and implemented by Axis Communications AB.
+ *
+ * The contents of this file are subject to the Red Hat eCos Public
+ * License Version 1.1 (the "Licence"); you may not use this file
+ * except in compliance with the Licence. You may obtain a copy of
+ * the Licence at http://www.redhat.com/
+ *
+ * Software distributed under the Licence is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
+ * See the Licence for the specific language governing rights and
+ * limitations under the Licence.
+ *
+ * The Original Code is JFFS2 - Journalling Flash File System, version 2
+ *
+ * Alternatively, the contents of this file may be used under the
+ * terms of the GNU General Public License version 2 (the "GPL"), in
+ * which case the provisions of the GPL are applicable instead of the
+ * above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the RHEPL, indicate your decision by
+ * deleting the provisions above and replace them with the notice and
+ * other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file
+ * under either the RHEPL or the GPL.
+ *
+ * $Id: compr_zlib.c,v 1.2 2002/01/24 22:58:42 rfeany Exp $
+ *
+ */
+
+#include <common.h>
+#include <config.h>
+#if (CONFIG_COMMANDS & CFG_CMD_JFFS2)
+
+#include <jffs2/jffs2.h>
+#include <jffs2/mini_inflate.h>
+
+long zlib_decompress(unsigned char *data_in, unsigned char *cpage_out,
+ __u32 srclen, __u32 destlen)
+{
+ return (decompress_block(cpage_out, data_in + 2, ldr_memcpy));
+
+}
+
+#endif /* CFG_CMD_JFFS2 */
diff --git a/fs/jffs2/jffs2_1pass.c b/fs/jffs2/jffs2_1pass.c
new file mode 100644
index 0000000..bacec8e
--- /dev/null
+++ b/fs/jffs2/jffs2_1pass.c
@@ -0,0 +1,995 @@
+/*
+-------------------------------------------------------------------------
+ * Filename: jffs2.c
+ * Version: $Id: jffs2_1pass.c,v 1.7 2002/01/25 01:56:47 nyet Exp $
+ * Copyright: Copyright (C) 2001, Russ Dill
+ * Author: Russ Dill <Russ.Dill@asu.edu>
+ * Description: Module to load kernel from jffs2
+ *-----------------------------------------------------------------------*/
+/*
+ * some portions of this code are taken from jffs2, and as such, the
+ * following copyright notice is included.
+ *
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ * Copyright (C) 2001 Red Hat, Inc.
+ *
+ * Created by David Woodhouse <dwmw2@cambridge.redhat.com>
+ *
+ * The original JFFS, from which the design for JFFS2 was derived,
+ * was designed and implemented by Axis Communications AB.
+ *
+ * The contents of this file are subject to the Red Hat eCos Public
+ * License Version 1.1 (the "Licence"); you may not use this file
+ * except in compliance with the Licence. You may obtain a copy of
+ * the Licence at http://www.redhat.com/
+ *
+ * Software distributed under the Licence is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
+ * See the Licence for the specific language governing rights and
+ * limitations under the Licence.
+ *
+ * The Original Code is JFFS2 - Journalling Flash File System, version 2
+ *
+ * Alternatively, the contents of this file may be used under the
+ * terms of the GNU General Public License version 2 (the "GPL"), in
+ * which case the provisions of the GPL are applicable instead of the
+ * above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the RHEPL, indicate your decision by
+ * deleting the provisions above and replace them with the notice and
+ * other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file
+ * under either the RHEPL or the GPL.
+ *
+ * $Id: jffs2_1pass.c,v 1.7 2002/01/25 01:56:47 nyet Exp $
+ *
+ */
+
+/* Ok, so anyone who knows the jffs2 code will probably want to get a papar
+ * bag to throw up into before reading this code. I looked through the jffs2
+ * code, the caching scheme is very elegant. I tried to keep the version
+ * for a bootloader as small and simple as possible. Instead of worring about
+ * unneccesary data copies, node scans, etc, I just optimized for the known
+ * common case, a kernel, which looks like:
+ * (1) most pages are 4096 bytes
+ * (2) version numbers are somewhat sorted in acsending order
+ * (3) multiple compressed blocks making up one page is uncommon
+ *
+ * So I create a linked list of decending version numbers (insertions at the
+ * head), and then for each page, walk down the list, until a matching page
+ * with 4096 bytes is found, and then decompress the watching pages in
+ * reverse order.
+ *
+ */
+
+/*
+ * Adapted by Nye Liu <nyet@zumanetworks.com> and
+ * Rex Feany <rfeany@zumanetworks.com>
+ * on Jan/2002 for U-Boot.
+ *
+ * Clipped out all the non-1pass functions, cleaned up warnings,
+ * wrappers, etc. No major changes to the code.
+ * Please, he really means it when he said have a paper bag
+ * handy. We needed it ;).
+ *
+ */
+
+#include <common.h>
+#include <config.h>
+#include <malloc.h>
+#include <linux/stat.h>
+#include <linux/time.h>
+
+#if (CONFIG_COMMANDS & CFG_CMD_JFFS2)
+
+#include <jffs2/jffs2.h>
+#include <jffs2/jffs2_1pass.h>
+
+#include "jffs2_private.h"
+
+/* Compression names */
+static char *compr_names[] = {
+ "NONE",
+ "ZERO",
+ "RTIME",
+ "RUBINMIPS",
+ "COPY",
+ "DYNRUBIN",
+ "ZLIB" };
+
+static char spinner[] = { '|', '\\', '-', '/' };
+
+#define DEBUG
+#ifdef DEBUG
+# define DEBUGF(fmt,args...) printf(fmt ,##args)
+#else
+# define DEBUGF(fmt,args...)
+#endif
+
+#define MALLOC_CHUNK (10*1024)
+
+
+static struct b_node *
+add_node(struct b_node *tail, u32 * count, u32 * memBase)
+{
+ u32 index;
+ u32 memLimit;
+ struct b_node *b;
+
+ index = (*count) * sizeof(struct b_node) % MALLOC_CHUNK;
+ memLimit = MALLOC_CHUNK;
+
+#if 0
+ putLabeledWord("add_node: index = ", index);
+ putLabeledWord("add_node: memLimit = ", memLimit);
+ putLabeledWord("add_node: memBase = ", *memBase);
+#endif
+
+ /* we need not keep a list of bases since we'll never free the */
+ /* memory, just jump the the kernel */
+ if ((index == 0) || (index > memLimit)) { /* we need mode space before we continue */
+ if ((*memBase = (u32) mmalloc(MALLOC_CHUNK)) == (u32) NULL) {
+ putstr("add_node: malloc failed\n");
+ return NULL;
+ }
+#if 0
+ putLabeledWord("add_node: alloced a new membase at ", *memBase);
+#endif
+
+ }
+ /* now we have room to add it. */
+ b = (struct b_node *) (*memBase + index);
+
+ /* null on first call */
+ if (tail)
+ tail->next = b;
+
+#if 0
+ putLabeledWord("add_node: tail = ", (u32) tail);
+ if (tail)
+ putLabeledWord("add_node: tail->next = ", (u32) tail->next);
+
+#endif
+
+#if 0
+ putLabeledWord("add_node: mb+i = ", (u32) (*memBase + index));
+ putLabeledWord("add_node: b = ", (u32) b);
+#endif
+ (*count)++;
+ b->next = (struct b_node *) NULL;
+ return b;
+
+}
+
+/* we know we have empties at the start offset so we will hop */
+/* t points that would be non F if there were a node here to speed this up. */
+struct jffs2_empty_node {
+ u32 first;
+ u32 second;
+};
+
+static u32
+jffs2_scan_empty(u32 start_offset, struct part_info *part)
+{
+ u32 max = part->size - sizeof(struct jffs2_raw_inode);
+
+ /* this would be either dir node_crc or frag isize */
+ u32 offset = start_offset + 32;
+ struct jffs2_empty_node *node;
+
+ start_offset += 4;
+ while (offset < max) {
+ node = (struct jffs2_empty_node *) (part->offset + offset);
+ if ((node->first == 0xFFFFFFFF) && (node->second == 0xFFFFFFFF)) {
+ /* we presume that there were no nodes in between and advance in a hop */
+ /* putLabeledWord("\t\tjffs2_scan_empty: empty at offset=",offset); */
+ start_offset = offset + 4;
+ offset = start_offset + 32; /* orig 32 + 4 bytes for the second==0xfffff */
+ } else {
+ return start_offset;
+ }
+ }
+ return start_offset;
+}
+
+static u32
+jffs_init_1pass_list(struct part_info *part)
+{
+ if ( 0 != ( part->jffs2_priv=malloc(sizeof(struct b_lists)))){
+ struct b_lists *pL =(struct b_lists *)part->jffs2_priv;
+
+ pL->dirListHead = pL->dirListTail = NULL;
+ pL->fragListHead = pL->fragListTail = NULL;
+ pL->dirListCount = 0;
+ pL->dirListMemBase = 0;
+ pL->fragListCount = 0;
+ pL->fragListMemBase = 0;
+ pL->partOffset = 0x0;
+ }
+ return 0;
+}
+
+/* find the inode from the slashless name given a parent */
+static long
+jffs2_1pass_read_inode(struct b_lists *pL, u32 inode, char *dest)
+{
+ struct b_node *b;
+ struct jffs2_raw_inode *jNode;
+ u32 totalSize = 1;
+ u32 oldTotalSize = 0;
+ u32 size = 0;
+ char *lDest = (char *) dest;
+ char *src;
+ long ret;
+ int i;
+ u32 counter = 0;
+ char totalSizeSet = 0;
+
+#if 0
+ b = pL->fragListHead;
+ while (b) {
+ jNode = (struct jffs2_raw_inode *) (b->offset);
+ if ((inode == jNode->ino)) {
+ putLabeledWord("\r\n\r\nread_inode: totlen = ", jNode->totlen);
+ putLabeledWord("read_inode: inode = ", jNode->ino);
+ putLabeledWord("read_inode: version = ", jNode->version);
+ putLabeledWord("read_inode: isize = ", jNode->isize);
+ putLabeledWord("read_inode: offset = ", jNode->offset);
+ putLabeledWord("read_inode: csize = ", jNode->csize);
+ putLabeledWord("read_inode: dsize = ", jNode->dsize);
+ putLabeledWord("read_inode: compr = ", jNode->compr);
+ putLabeledWord("read_inode: usercompr = ", jNode->usercompr);
+ putLabeledWord("read_inode: flags = ", jNode->flags);
+ }
+
+ b = b->next;
+ }
+
+#endif
+
+#if 1
+ b = pL->fragListHead;
+ while (b && (size < totalSize)) {
+ jNode = (struct jffs2_raw_inode *) (b->offset);
+ if ((inode == jNode->ino)) {
+ if ((jNode->isize == oldTotalSize) && (jNode->isize > totalSize)) {
+ /* 2 consecutive isizes indicate file length */
+ totalSize = jNode->isize;
+ totalSizeSet = 1;
+ } else if (!totalSizeSet) {
+ totalSize = size + jNode->dsize + 1;
+ }
+ oldTotalSize = jNode->isize;
+
+ if(dest) {
+ src = ((char *) jNode) + sizeof(struct jffs2_raw_inode);
+ /* lDest = (char *) (dest + (jNode->offset & ~3)); */
+ lDest = (char *) (dest + jNode->offset);
+#if 0
+ putLabeledWord("\r\n\r\nread_inode: src = ", src);
+ putLabeledWord("read_inode: dest = ", lDest);
+ putLabeledWord("read_inode: dsize = ", jNode->dsize);
+ putLabeledWord("read_inode: csize = ", jNode->csize);
+ putLabeledWord("read_inode: version = ", jNode->version);
+ putLabeledWord("read_inode: isize = ", jNode->isize);
+ putLabeledWord("read_inode: offset = ", jNode->offset);
+ putLabeledWord("read_inode: compr = ", jNode->compr);
+ putLabeledWord("read_inode: flags = ", jNode->flags);
+#endif
+ switch (jNode->compr) {
+ case JFFS2_COMPR_NONE:
+#if 0
+ {
+ int i;
+
+ if ((dest > 0xc0092ff0) && (dest < 0xc0093000))
+ for (i = 0; i < first->length; i++) {
+ putLabeledWord("\tCOMPR_NONE: src =", src + i);
+ putLabeledWord("\tCOMPR_NONE: length =", first->length);
+ putLabeledWord("\tCOMPR_NONE: dest =", dest + i);
+ putLabeledWord("\tCOMPR_NONE: data =", (unsigned char) *(src + i));
+ }
+ }
+#endif
+
+ ret = (unsigned long) ldr_memcpy(lDest, src, jNode->dsize);
+ break;
+ case JFFS2_COMPR_ZERO:
+ ret = 0;
+ for (i = 0; i < jNode->dsize; i++)
+ *(lDest++) = 0;
+ break;
+ case JFFS2_COMPR_RTIME:
+ ret = 0;
+ rtime_decompress(src, lDest, jNode->csize, jNode->dsize);
+ break;
+ case JFFS2_COMPR_DYNRUBIN:
+ /* this is slow but it works */
+ ret = 0;
+ dynrubin_decompress(src, lDest, jNode->csize, jNode->dsize);
+ break;
+ case JFFS2_COMPR_ZLIB:
+ ret = zlib_decompress(src, lDest, jNode->csize, jNode->dsize);
+ break;
+ default:
+ /* unknown */
+ putLabeledWord("UNKOWN COMPRESSION METHOD = ", jNode->compr);
+ return -1;
+ break;
+ }
+ }
+
+ size += jNode->dsize;
+#if 0
+ putLabeledWord("read_inode: size = ", size);
+ putLabeledWord("read_inode: totalSize = ", totalSize);
+ putLabeledWord("read_inode: compr ret = ", ret);
+#endif
+ }
+ b = b->next;
+ counter++;
+ }
+#endif
+
+#if 0
+ putLabeledWord("read_inode: returning = ", size);
+#endif
+ return size;
+}
+
+/* find the inode from the slashless name given a parent */
+static u32
+jffs2_1pass_find_inode(struct b_lists * pL, const char *name, u32 pino)
+{
+ struct b_node *b;
+ struct jffs2_raw_dirent *jDir;
+ int len;
+ u32 counter;
+ u32 version = 0;
+ u32 inode = 0;
+
+ /* name is assumed slash free */
+ len = strlen(name);
+
+ counter = 0;
+ /* we need to search all and return the inode with the highest version */
+ for(b = pL->dirListHead;b;b=b->next,counter++) {
+ jDir = (struct jffs2_raw_dirent *) (b->offset);
+ if ((pino == jDir->pino) && (len == jDir->nsize) && (jDir->ino) && /* 0 for unlink */
+ (!strncmp(jDir->name, name, len))) { /* a match */
+ if (jDir->version < version) continue;
+
+ if(jDir->version==0) {
+ /* Is this legal? */
+ putstr(" ** WARNING ** ");
+ putnstr(jDir->name, jDir->nsize);
+ putstr(" is version 0 (in find, ignoring)\r\n");
+ } else if(jDir->version==version) {
+ /* Im pretty sure this isn't ... */
+ putstr(" ** ERROR ** ");
+ putnstr(jDir->name, jDir->nsize);
+ putLabeledWord(" has dup version =", version);
+ }
+ inode = jDir->ino;
+ version = jDir->version;
+ }
+#if 0
+ putstr("\r\nfind_inode:p&l ->");
+ putnstr(jDir->name, jDir->nsize);
+ putstr("\r\n");
+ putLabeledWord("pino = ", jDir->pino);
+ putLabeledWord("nsize = ", jDir->nsize);
+ putLabeledWord("b = ", (u32) b);
+ putLabeledWord("counter = ", counter);
+#endif
+ }
+ return inode;
+}
+
+static char *mkmodestr(unsigned long mode, char *str)
+{
+ static const char *l="xwr";
+ int mask=1, i;
+ char c;
+
+ switch (mode & S_IFMT) {
+ case S_IFDIR: str[0]='d'; break;
+ case S_IFBLK: str[0]='b'; break;
+ case S_IFCHR: str[0]='c'; break;
+ case S_IFIFO: str[0]='f'; break;
+ case S_IFLNK: str[0]='l'; break;
+ case S_IFSOCK: str[0]='s'; break;
+ case S_IFREG: str[0]='-'; break;
+ default: str[0]='?';
+ }
+
+ for(i=0;i<9;i++) {
+ c=l[i%3];
+ str[9-i]=(mode & mask)?c:'-';
+ mask=mask<<1;
+ }
+
+ if(mode & S_ISUID) str[3]=(mode & S_IXUSR)?'s':'S';
+ if(mode & S_ISGID) str[6]=(mode & S_IXGRP)?'s':'S';
+ if(mode & S_ISVTX) str[9]=(mode & S_IXOTH)?'t':'T';
+ str[10]='\0';
+ return str;
+}
+
+static inline void dump_stat(struct stat *st, const char *name)
+{
+ char str[20];
+ char s[64], *p;
+
+ if (st->st_mtime == (time_t)(-1)) /* some ctimes really hate -1 */
+ st->st_mtime = 1;
+
+ ctime_r(&st->st_mtime, s/*, 64*/); /* newlib ctime doesn't have buflen */
+
+ if((p=strchr(s,'\n'))!=NULL) *p='\0';
+ if((p=strchr(s,'\r'))!=NULL) *p='\0';
+
+/*
+ printf("%6lo %s %8ld %s %s\n", st->st_mode, mkmodestr(st->st_mode, str),
+ st->st_size, s, name);
+*/
+
+ printf(" %s %8ld %s %s", mkmodestr(st->st_mode,str), st->st_size, s, name);
+}
+
+static inline u32 dump_inode(struct b_lists * pL, struct jffs2_raw_dirent *d, struct jffs2_raw_inode *i)
+{
+ char fname[256];
+ struct stat st;
+
+ if(!d || !i) return -1;
+
+ strncpy(fname, d->name, d->nsize);
+ fname[d->nsize]='\0';
+
+ memset(&st,0,sizeof(st));
+
+ st.st_mtime=i->mtime;
+ st.st_mode=i->mode;
+ st.st_ino=i->ino;
+
+ /* neither dsize nor isize help us.. do it the long way */
+ st.st_size=jffs2_1pass_read_inode(pL, i->ino, NULL);
+
+ dump_stat(&st, fname);
+
+ if (d->type == DT_LNK) {
+ unsigned char *src = (unsigned char *) (&i[1]);
+ putstr(" -> ");
+ putnstr(src, (int)i->dsize);
+ }
+
+ putstr("\r\n");
+
+ return 0;
+}
+
+/* list inodes with the given pino */
+static u32
+jffs2_1pass_list_inodes(struct b_lists * pL, u32 pino)
+{
+ struct b_node *b;
+ struct jffs2_raw_dirent *jDir;
+
+ for(b = pL->dirListHead;b;b=b->next) {
+ jDir = (struct jffs2_raw_dirent *) (b->offset);
+ if ((pino == jDir->pino) && (jDir->ino)) { /* 0 inode for unlink */
+ u32 i_version=0;
+ struct jffs2_raw_inode *jNode, *i=NULL;
+ struct b_node *b2 = pL->fragListHead;
+
+ while (b2) {
+ jNode = (struct jffs2_raw_inode *) (b2->offset);
+ if (jNode->ino == jDir->ino
+ && jNode->version>=i_version)
+ i=jNode;
+ b2 = b2->next;
+ }
+
+ dump_inode(pL, jDir, i);
+ }
+ }
+ return pino;
+}
+
+static u32
+jffs2_1pass_search_inode(struct b_lists * pL, const char *fname, u32 pino)
+{
+ int i;
+ char tmp[256];
+ char working_tmp[256];
+ char *c;
+
+ /* discard any leading slash */
+ i = 0;
+ while (fname[i] == '/')
+ i++;
+ strcpy(tmp, &fname[i]);
+
+ while ((c = (char *) strchr(tmp, '/'))) /* we are still dired searching */
+ {
+ strncpy(working_tmp, tmp, c - tmp);
+ working_tmp[c - tmp] = '\0';
+#if 0
+ putstr("search_inode: tmp = ");
+ putstr(tmp);
+ putstr("\r\n");
+ putstr("search_inode: wtmp = ");
+ putstr(working_tmp);
+ putstr("\r\n");
+ putstr("search_inode: c = ");
+ putstr(c);
+ putstr("\r\n");
+#endif
+ for (i = 0; i < strlen(c) - 1; i++)
+ tmp[i] = c[i + 1];
+ tmp[i] = '\0';
+#if 0
+ putstr("search_inode: post tmp = ");
+ putstr(tmp);
+ putstr("\r\n");
+#endif
+
+ if (!(pino = jffs2_1pass_find_inode(pL, working_tmp, pino))) {
+ putstr("find_inode failed for name=");
+ putstr(working_tmp);
+ putstr("\r\n");
+ return 0;
+ }
+ }
+ /* this is for the bare filename, directories have already been mapped */
+ if (!(pino = jffs2_1pass_find_inode(pL, tmp, pino))) {
+ putstr("find_inode failed for name=");
+ putstr(tmp);
+ putstr("\r\n");
+ return 0;
+ }
+ return pino;
+
+}
+
+static u32
+jffs2_1pass_resolve_inode(struct b_lists * pL, u32 ino)
+{
+ struct b_node *b;
+ struct b_node *b2;
+ struct jffs2_raw_dirent *jDir;
+ struct jffs2_raw_inode *jNode;
+ struct jffs2_raw_dirent *jDirFound = NULL;
+ char tmp[256];
+ u32 version = 0;
+ u32 pino;
+ unsigned char *src;
+
+ /* we need to search all and return the inode with the highest version */
+ for(b = pL->dirListHead; b; b=b->next) {
+ jDir = (struct jffs2_raw_dirent *) (b->offset);
+ if (ino == jDir->ino) {
+ if(jDir->version < version) continue;
+
+ if(jDir->version == 0) {
+ /* Is this legal? */
+ putstr(" ** WARNING ** ");
+ putnstr(jDir->name, jDir->nsize);
+ putstr(" is version 0 (in resolve, ignoring)\r\n");
+ } else if(jDir->version == version) {
+ /* Im pretty sure this isn't ... */
+ putstr(" ** ERROR ** ");
+ putnstr(jDir->name, jDir->nsize);
+ putLabeledWord(" has dup version (resolve) = ",
+ version);
+ }
+
+ jDirFound = jDir;
+ version = jDir->version;
+ }
+ }
+ /* now we found the right entry again. (shoulda returned inode*) */
+ if (jDirFound->type != DT_LNK)
+ return jDirFound->ino;
+ /* so its a soft link so we follow it again. */
+ b2 = pL->fragListHead;
+ while (b2) {
+ jNode = (struct jffs2_raw_inode *) (b2->offset);
+ if (jNode->ino == jDirFound->ino) {
+ src = (unsigned char *) (b2->offset + sizeof(struct jffs2_raw_inode));
+
+#if 0
+ putLabeledWord("\t\t dsize = ", jNode->dsize);
+ putstr("\t\t target = ");
+ putnstr(src, jNode->dsize);
+ putstr("\r\n");
+#endif
+ strncpy(tmp, src, jNode->dsize);
+ tmp[jNode->dsize] = '\0';
+ break;
+ }
+ b2 = b2->next;
+ }
+ /* ok so the name of the new file to find is in tmp */
+ /* if it starts with a slash it is root based else shared dirs */
+ if (tmp[0] == '/')
+ pino = 1;
+ else
+ pino = jDirFound->pino;
+
+ return jffs2_1pass_search_inode(pL, tmp, pino);
+}
+
+static u32
+jffs2_1pass_search_list_inodes(struct b_lists * pL, const char *fname, u32 pino)
+{
+ int i;
+ char tmp[256];
+ char working_tmp[256];
+ char *c;
+
+ /* discard any leading slash */
+ i = 0;
+ while (fname[i] == '/')
+ i++;
+ strcpy(tmp, &fname[i]);
+ working_tmp[0] = '\0';
+ while ((c = (char *) strchr(tmp, '/'))) /* we are still dired searching */
+ {
+ strncpy(working_tmp, tmp, c - tmp);
+ working_tmp[c - tmp] = '\0';
+ for (i = 0; i < strlen(c) - 1; i++)
+ tmp[i] = c[i + 1];
+ tmp[i] = '\0';
+ /* only a failure if we arent looking at top level */
+ if (!(pino = jffs2_1pass_find_inode(pL, working_tmp, pino)) && (working_tmp[0])) {
+ putstr("find_inode failed for name=");
+ putstr(working_tmp);
+ putstr("\r\n");
+ return 0;
+ }
+ }
+
+ if (tmp[0] && !(pino = jffs2_1pass_find_inode(pL, tmp, pino))) {
+ putstr("find_inode failed for name=");
+ putstr(tmp);
+ putstr("\r\n");
+ return 0;
+ }
+ /* this is for the bare filename, directories have already been mapped */
+ if (!(pino = jffs2_1pass_list_inodes(pL, pino))) {
+ putstr("find_inode failed for name=");
+ putstr(tmp);
+ putstr("\r\n");
+ return 0;
+ }
+ return pino;
+
+}
+
+unsigned char
+jffs2_1pass_rescan_needed(struct part_info *part)
+{
+ struct b_node *b;
+ struct jffs2_unknown_node *node;
+ struct b_lists *pL=(struct b_lists *)part->jffs2_priv;
+
+ if (part->jffs2_priv == 0){
+ DEBUGF ("rescan: First time in use\n");
+ return 1;
+ }
+ /* if we have no list, we need to rescan */
+ if (pL->fragListCount == 0) {
+ DEBUGF ("rescan: fraglist zero\n");
+ return 1;
+ }
+
+ /* or if we are scanninga new partition */
+ if (pL->partOffset != part->offset) {
+ DEBUGF ("rescan: different partition\n");
+ return 1;
+ }
+ /* but suppose someone reflashed the root partition at the same offset... */
+ b = pL->dirListHead;
+ while (b) {
+ node = (struct jffs2_unknown_node *) (b->offset);
+ if (node->nodetype != JFFS2_NODETYPE_DIRENT) {
+ DEBUGF ("rescan: fs changed beneath me? (%lx)\n", (unsigned long) b->offset);
+ return 1;
+ }
+ b = b->next;
+ }
+ return 0;
+}
+
+static u32
+jffs2_1pass_build_lists(struct part_info * part)
+{
+ struct b_lists *pL;
+ struct jffs2_unknown_node *node;
+ u32 offset;
+ u32 max = part->size - sizeof(struct jffs2_raw_inode);
+ u32 counter = 0;
+ u32 counter4 = 0;
+ u32 counterF = 0;
+ u32 counterN = 0;
+
+ /* turn off the lcd. Refreshing the lcd adds 50% overhead to the */
+ /* jffs2 list building enterprise nope. in newer versions the overhead is */
+ /* only about 5 %. not enough to inconvenience people for. */
+ /* lcd_off(); */
+
+ /* if we are building a list we need to refresh the cache. */
+ /* note that since we don't free our memory, eventually this will be bad. */
+ /* but we're a bootldr so what the hell. */
+ jffs_init_1pass_list(part);
+ pL=(struct b_lists *)part->jffs2_priv;
+ pL->partOffset = part->offset;
+ offset = 0;
+ printf("Scanning JFFS2 FS: ");
+
+ /* start at the beginning of the partition */
+ while (offset < max) {
+ if (! (++counter%10000))
+ printf("\b\b%c ", spinner[(counter / 10000) % 4]);
+
+ node = (struct jffs2_unknown_node *) (part->offset + offset);
+ if (node->magic == JFFS2_MAGIC_BITMASK && hdr_crc(node)) {
+ /* if its a fragment add it */
+ if (node->nodetype == JFFS2_NODETYPE_INODE && inode_crc((struct jffs2_raw_inode *) node)) {
+ if (!(pL->fragListTail = add_node(pL->fragListTail, &(pL->fragListCount),
+ &(pL->fragListMemBase)))) {
+ putstr("add_node failed!\r\n");
+ return 0;
+ }
+ pL->fragListTail->offset = (u32) (part->offset + offset);
+ if (!pL->fragListHead)
+ pL->fragListHead = pL->fragListTail;
+ } else if (node->nodetype == JFFS2_NODETYPE_DIRENT &&
+ dirent_crc((struct jffs2_raw_dirent *) node) &&
+ dirent_name_crc((struct jffs2_raw_dirent *) node)) {
+ if (! (counterN%100))
+ printf("\b\b. ");
+#if 0
+ printf("Found DIRENT @ 0x%lx\n", offset);
+ putstr("\r\nbuild_lists:p&l ->");
+ putnstr(((struct jffs2_raw_dirent *) node)->name, ((struct jffs2_raw_dirent *) node)->nsize);
+ putstr("\r\n");
+ putLabeledWord("\tpino = ", ((struct jffs2_raw_dirent *) node)->pino);
+ putLabeledWord("\tnsize = ", ((struct jffs2_raw_dirent *) node)->nsize);
+#endif
+
+ if (!(pL->dirListTail = add_node(pL->dirListTail, &(pL->dirListCount), &(pL->dirListMemBase)))) {
+ putstr("add_node failed!\r\n");
+ return 0;
+ }
+ pL->dirListTail->offset = (u32) (part->offset + offset);
+#if 0
+ putLabeledWord("\ttail = ", (u32) pL->dirListTail);
+ putstr("\ttailName ->");
+ putnstr(((struct jffs2_raw_dirent *) (pL->dirListTail->offset))->name,
+ ((struct jffs2_raw_dirent *) (pL->dirListTail->offset))->nsize);
+ putstr("\r\n");
+#endif
+ if (!pL->dirListHead)
+ pL->dirListHead = pL->dirListTail;
+ counterN++;
+ } else if (node->nodetype == JFFS2_NODETYPE_CLEANMARKER) {
+ if (node->totlen != sizeof(struct jffs2_unknown_node))
+ printf("OOPS Cleanmarker has bad size %d != %d\n", node->totlen, sizeof(struct jffs2_unknown_node));
+ } else {
+ printf("Unknown node type: %x len %d offset 0x%x\n", node->nodetype, node->totlen, offset);
+ }
+ offset += ((node->totlen + 3) & ~3);
+ counterF++;
+ } else if (node->magic == JFFS2_EMPTY_BITMASK && node->nodetype == JFFS2_EMPTY_BITMASK) {
+ offset = jffs2_scan_empty(offset, part);
+ } else { /* if we know nothing of the filesystem, we just step and look. */
+ offset += 4;
+ counter4++;
+ }
+/* printf("unknown node magic %4.4x %4.4x @ %lx\n", node->magic, node->nodetype, (unsigned long)node); */
+
+ }
+
+ putstr("\b\b done.\r\n"); /* close off the dots */
+ /* turn the lcd back on. */
+ /* splash(); */
+
+#if 0
+ putLabeledWord("dir entries = ", pL->dirListCount);
+ putLabeledWord("frag entries = ", pL->fragListCount);
+ putLabeledWord("+4 increments = ", counter4);
+ putLabeledWord("+file_offset increments = ", counterF);
+
+#endif
+
+#undef SHOW_ALL
+#undef SHOW_ALL_FRAGMENTS
+
+#ifdef SHOW_ALL
+ {
+ struct b_node *b;
+ struct b_node *b2;
+ struct jffs2_raw_dirent *jDir;
+ struct jffs2_raw_inode *jNode;
+
+ putstr("\r\n\r\n******The directory Entries******\r\n");
+ b = pL->dirListHead;
+ while (b) {
+ jDir = (struct jffs2_raw_dirent *) (b->offset);
+ putstr("\r\n");
+ putnstr(jDir->name, jDir->nsize);
+ putLabeledWord("\r\n\tbuild_list: magic = ", jDir->magic);
+ putLabeledWord("\tbuild_list: nodetype = ", jDir->nodetype);
+ putLabeledWord("\tbuild_list: hdr_crc = ", jDir->hdr_crc);
+ putLabeledWord("\tbuild_list: pino = ", jDir->pino);
+ putLabeledWord("\tbuild_list: version = ", jDir->version);
+ putLabeledWord("\tbuild_list: ino = ", jDir->ino);
+ putLabeledWord("\tbuild_list: mctime = ", jDir->mctime);
+ putLabeledWord("\tbuild_list: nsize = ", jDir->nsize);
+ putLabeledWord("\tbuild_list: type = ", jDir->type);
+ putLabeledWord("\tbuild_list: node_crc = ", jDir->node_crc);
+ putLabeledWord("\tbuild_list: name_crc = ", jDir->name_crc);
+ b = b->next;
+ }
+
+#ifdef SHOW_ALL_FRAGMENTS
+ putstr("\r\n\r\n******The fragment Entries******\r\n");
+ b = pL->fragListHead;
+ while (b) {
+ jNode = (struct jffs2_raw_inode *) (b->offset);
+ putLabeledWord("\r\n\tbuild_list: FLASH_OFFSET = ", b->offset);
+ putLabeledWord("\tbuild_list: totlen = ", jNode->totlen);
+ putLabeledWord("\tbuild_list: inode = ", jNode->ino);
+ putLabeledWord("\tbuild_list: version = ", jNode->version);
+ putLabeledWord("\tbuild_list: isize = ", jNode->isize);
+ putLabeledWord("\tbuild_list: atime = ", jNode->atime);
+ putLabeledWord("\tbuild_list: offset = ", jNode->offset);
+ putLabeledWord("\tbuild_list: csize = ", jNode->csize);
+ putLabeledWord("\tbuild_list: dsize = ", jNode->dsize);
+ putLabeledWord("\tbuild_list: compr = ", jNode->compr);
+ putLabeledWord("\tbuild_list: usercompr = ", jNode->usercompr);
+ putLabeledWord("\tbuild_list: flags = ", jNode->flags);
+ b = b->next;
+ }
+#endif /* SHOW_ALL_FRAGMENTS */
+ }
+
+#endif /* SHOW_ALL */
+ /* give visual feedback that we are done scanning the flash */
+ led_blink(0x0, 0x0, 0x1, 0x1); /* off, forever, on 100ms, off 100ms */
+ return 1;
+}
+
+
+
+
+
+static u32
+jffs2_1pass_fill_info(struct b_lists * pL, struct b_jffs2_info * piL)
+{
+ struct b_node *b;
+ struct jffs2_raw_inode *jNode;
+ int i;
+
+ b = pL->fragListHead;
+ for (i = 0; i < JFFS2_NUM_COMPR; i++) {
+ piL->compr_info[i].num_frags = 0;
+ piL->compr_info[i].compr_sum = 0;
+ piL->compr_info[i].decompr_sum = 0;
+ }
+
+ while (b) {
+ jNode = (struct jffs2_raw_inode *) (b->offset);
+ if (jNode->compr < JFFS2_NUM_COMPR) {
+ piL->compr_info[jNode->compr].num_frags++;
+ piL->compr_info[jNode->compr].compr_sum += jNode->csize;
+ piL->compr_info[jNode->compr].decompr_sum += jNode->dsize;
+ }
+ b = b->next;
+ }
+ return 0;
+}
+
+
+
+static struct b_lists *
+jffs2_get_list(struct part_info * part, const char *who)
+{
+ if (jffs2_1pass_rescan_needed(part)) {
+ if (!jffs2_1pass_build_lists(part)) {
+ printf("%s: Failed to scan JFFSv2 file structure\n", who);
+ return NULL;
+ }
+ }
+ return (struct b_lists *)part->jffs2_priv;
+}
+
+
+/* Print directory / file contents */
+u32
+jffs2_1pass_ls(struct part_info * part, const char *fname)
+{
+ struct b_lists *pl;
+ long ret = 0;
+ u32 inode;
+
+ if (! (pl = jffs2_get_list(part, "ls")))
+ return 0;
+
+ if (! (inode = jffs2_1pass_search_list_inodes(pl, fname, 1))) {
+ putstr("ls: Failed to scan jffs2 file structure\r\n");
+ return 0;
+ }
+
+
+#if 0
+ putLabeledWord("found file at inode = ", inode);
+ putLabeledWord("read_inode returns = ", ret);
+#endif
+
+ return ret;
+}
+
+
+
+
+
+/* Load a file from flash into memory. fname can be a full path */
+u32
+jffs2_1pass_load(char *dest, struct part_info * part, const char *fname)
+{
+
+ struct b_lists *pl;
+ long ret = 0;
+ u32 inode;
+
+ if (! (pl = jffs2_get_list(part, "load")))
+ return 0;
+
+ if (! (inode = jffs2_1pass_search_inode(pl, fname, 1))) {
+ putstr("load: Failed to find inode\r\n");
+ return 0;
+ }
+
+ /* Resolve symlinks */
+ if (! (inode = jffs2_1pass_resolve_inode(pl, inode))) {
+ putstr("load: Failed to resolve inode structure\r\n");
+ return 0;
+ }
+
+ if ((ret = jffs2_1pass_read_inode(pl, inode, dest)) < 0) {
+ putstr("load: Failed to read inode\r\n");
+ return 0;
+ }
+
+ DEBUGF ("load: loaded '%s' to 0x%lx (%ld bytes)\n", fname,
+ (unsigned long) dest, ret);
+ return ret;
+}
+
+/* Return information about the fs on this partition */
+u32
+jffs2_1pass_info(struct part_info * part)
+{
+ struct b_jffs2_info info;
+ struct b_lists *pl;
+ int i;
+
+ if (! (pl = jffs2_get_list(part, "info")))
+ return 0;
+
+ jffs2_1pass_fill_info(pl, &info);
+ for (i=0; i < JFFS2_NUM_COMPR; i++) {
+ printf("Compression: %s\n", compr_names[i]);
+ printf("\tfrag count: %d\n", info.compr_info[i].num_frags);
+ printf("\tcompressed sum: %d\n", info.compr_info[i].compr_sum);
+ printf("\tuncompressed sum: %d\n", info.compr_info[i].decompr_sum);
+ }
+ return 1;
+}
+
+#endif /* CFG_CMD_JFFS2 */
generated by cgit v1.1 at 2024-11-29 15:33:44 +0000