diff options
Diffstat (limited to 'package/mtd/src')
| -rw-r--r-- | package/mtd/src/Makefile | 14 | ||||
| -rw-r--r-- | package/mtd/src/crc32.c | 95 | ||||
| -rw-r--r-- | package/mtd/src/crc32.h | 19 | ||||
| -rw-r--r-- | package/mtd/src/jffs2.c | 303 | ||||
| -rw-r--r-- | package/mtd/src/jffs2.h | 217 | ||||
| -rw-r--r-- | package/mtd/src/mtd-api.h (renamed from package/mtd/src/mtd.h) | 0 | ||||
| -rw-r--r-- | package/mtd/src/mtd.c | 295 |
7 files changed, 809 insertions, 134 deletions
diff --git a/package/mtd/src/Makefile b/package/mtd/src/Makefile index 99e3ad792..5ab7d7b1e 100644 --- a/package/mtd/src/Makefile +++ b/package/mtd/src/Makefile @@ -1,12 +1,6 @@ -# $Id$ - -all: mtd - -%.o: %.c - $(CC) -I. $(CFLAGS) $(EXTRA_CFLAGS) -c -o $@ $^ - -mtd: mtd.o - $(CC) -o $@ $^ +CC = gcc +CFLAGS += -Wall +mtd: mtd.o jffs2.o crc32.o clean: - rm -f *.o mtd + rm -f *.o jffs2 diff --git a/package/mtd/src/crc32.c b/package/mtd/src/crc32.c new file mode 100644 index 000000000..6b1e50c42 --- /dev/null +++ b/package/mtd/src/crc32.c @@ -0,0 +1,95 @@ +/* + * COPYRIGHT (C) 1986 Gary S. Brown. You may use this program, or + * code or tables extracted from it, as desired without restriction. + * + * First, the polynomial itself and its table of feedback terms. The + * polynomial is + * X^32+X^26+X^23+X^22+X^16+X^12+X^11+X^10+X^8+X^7+X^5+X^4+X^2+X^1+X^0 + * + * Note that we take it "backwards" and put the highest-order term in + * the lowest-order bit. The X^32 term is "implied"; the LSB is the + * X^31 term, etc. The X^0 term (usually shown as "+1") results in + * the MSB being 1 + * + * Note that the usual hardware shift register implementation, which + * is what we're using (we're merely optimizing it by doing eight-bit + * chunks at a time) shifts bits into the lowest-order term. In our + * implementation, that means shifting towards the right. Why do we + * do it this way? Because the calculated CRC must be transmitted in + * order from highest-order term to lowest-order term. UARTs transmit + * characters in order from LSB to MSB. By storing the CRC this way + * we hand it to the UART in the order low-byte to high-byte; the UART + * sends each low-bit to hight-bit; and the result is transmission bit + * by bit from highest- to lowest-order term without requiring any bit + * shuffling on our part. Reception works similarly + * + * The feedback terms table consists of 256, 32-bit entries. Notes + * + * The table can be generated at runtime if desired; code to do so + * is shown later. It might not be obvious, but the feedback + * terms simply represent the results of eight shift/xor opera + * tions for all combinations of data and CRC register values + * + * The values must be right-shifted by eight bits by the "updcrc + * logic; the shift must be unsigned (bring in zeroes). On some + * hardware you could probably optimize the shift in assembler by + * using byte-swap instructions + * polynomial $edb88320 + */ + +#include <stdint.h> + +const uint32_t crc32_table[256] = { + 0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L, + 0x706af48fL, 0xe963a535L, 0x9e6495a3L, 0x0edb8832L, 0x79dcb8a4L, + 0xe0d5e91eL, 0x97d2d988L, 0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L, + 0x90bf1d91L, 0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL, + 0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L, 0x136c9856L, + 0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL, 0x14015c4fL, 0x63066cd9L, + 0xfa0f3d63L, 0x8d080df5L, 0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L, + 0xa2677172L, 0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL, + 0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L, 0x32d86ce3L, + 0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L, 0x26d930acL, 0x51de003aL, + 0xc8d75180L, 0xbfd06116L, 0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L, + 0xb8bda50fL, 0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L, + 0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL, 0x76dc4190L, + 0x01db7106L, 0x98d220bcL, 0xefd5102aL, 0x71b18589L, 0x06b6b51fL, + 0x9fbfe4a5L, 0xe8b8d433L, 0x7807c9a2L, 0x0f00f934L, 0x9609a88eL, + 0xe10e9818L, 0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L, + 0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL, 0x6c0695edL, + 0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L, 0x65b0d9c6L, 0x12b7e950L, + 0x8bbeb8eaL, 0xfcb9887cL, 0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L, + 0xfbd44c65L, 0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L, + 0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL, 0x4369e96aL, + 0x346ed9fcL, 0xad678846L, 0xda60b8d0L, 0x44042d73L, 0x33031de5L, + 0xaa0a4c5fL, 0xdd0d7cc9L, 0x5005713cL, 0x270241aaL, 0xbe0b1010L, + 0xc90c2086L, 0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL, + 0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L, 0x59b33d17L, + 0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL, 0xedb88320L, 0x9abfb3b6L, + 0x03b6e20cL, 0x74b1d29aL, 0xead54739L, 0x9dd277afL, 0x04db2615L, + 0x73dc1683L, 0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L, + 0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L, 0xf00f9344L, + 0x8708a3d2L, 0x1e01f268L, 0x6906c2feL, 0xf762575dL, 0x806567cbL, + 0x196c3671L, 0x6e6b06e7L, 0xfed41b76L, 0x89d32be0L, 0x10da7a5aL, + 0x67dd4accL, 0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L, + 0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L, 0xd1bb67f1L, + 0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL, 0xd80d2bdaL, 0xaf0a1b4cL, + 0x36034af6L, 0x41047a60L, 0xdf60efc3L, 0xa867df55L, 0x316e8eefL, + 0x4669be79L, 0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L, + 0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL, 0xc5ba3bbeL, + 0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L, 0xc2d7ffa7L, 0xb5d0cf31L, + 0x2cd99e8bL, 0x5bdeae1dL, 0x9b64c2b0L, 0xec63f226L, 0x756aa39cL, + 0x026d930aL, 0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L, + 0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L, 0x92d28e9bL, + 0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L, 0x86d3d2d4L, 0xf1d4e242L, + 0x68ddb3f8L, 0x1fda836eL, 0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L, + 0x18b74777L, 0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL, + 0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L, 0xa00ae278L, + 0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L, 0xa7672661L, 0xd06016f7L, + 0x4969474dL, 0x3e6e77dbL, 0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L, + 0x37d83bf0L, 0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L, + 0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L, + 0xcdd70693L, 0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L, + 0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL, + 0x2d02ef8dL +}; diff --git a/package/mtd/src/crc32.h b/package/mtd/src/crc32.h new file mode 100644 index 000000000..ee3145bc1 --- /dev/null +++ b/package/mtd/src/crc32.h @@ -0,0 +1,19 @@ +#ifndef CRC32_H +#define CRC32_H + +#include <stdint.h> + +extern const uint32_t crc32_table[256]; + +/* Return a 32-bit CRC of the contents of the buffer. */ + + static inline uint32_t +crc32(uint32_t val, const void *ss, int len) +{ + const unsigned char *s = ss; + while (--len >= 0) + val = crc32_table[(val ^ *s++) & 0xff] ^ (val >> 8); + return val; +} + +#endif diff --git a/package/mtd/src/jffs2.c b/package/mtd/src/jffs2.c new file mode 100644 index 000000000..7b68ae575 --- /dev/null +++ b/package/mtd/src/jffs2.c @@ -0,0 +1,303 @@ +#include <sys/types.h> +#include <sys/stat.h> +#include <stdint.h> +#include <stdio.h> +#include <fcntl.h> +#include <stdlib.h> +#include <string.h> +#include <dirent.h> +#include <unistd.h> +#include "jffs2.h" +#include "crc32.h" +#include "mtd.h" + +#define PAD(x) (((x)+3)&~3) + +#define CLEANMARKER "\x85\x19\x03\x20\x0c\x00\x00\x00\xb1\xb0\x1e\xe4" +#define JFFS2_EOF "\xde\xad\xc0\xde" + +static int last_ino = 0; +static int last_version = 0; +static char *buf = NULL; +static int ofs = 0; +static int outfd = 0; +static int mtdofs = 0; + +static void prep_eraseblock(void); + +static void pad(int size) +{ + if ((ofs % size == 0) && (ofs < erasesize)) + return; + + if (ofs < erasesize) { + memset(buf + ofs, 0xff, (size - (ofs % size))); + ofs += (size - (ofs % size)); + } + ofs = ofs % erasesize; + if (ofs == 0) { + mtd_erase_block(outfd, mtdofs); + write(outfd, buf, erasesize); + mtdofs += erasesize; + } +} + +static inline int rbytes(void) +{ + return erasesize - (ofs % erasesize); +} + +static inline void add_data(char *ptr, int len) +{ + if (ofs + len > erasesize) { + pad(erasesize); + prep_eraseblock(); + } + memcpy(buf + ofs, ptr, len); + ofs += len; +} + +static void prep_eraseblock(void) +{ + if (ofs > 0) + return; + + add_data(CLEANMARKER, sizeof(CLEANMARKER) - 1); +} + +static int add_dirent(char *name, char type, int parent) +{ + struct jffs2_raw_dirent *de; + + if (ofs - erasesize < sizeof(struct jffs2_raw_dirent) + strlen(name)) + pad(erasesize); + + prep_eraseblock(); + last_ino++; + memset(buf + ofs, 0, sizeof(struct jffs2_raw_dirent)); + de = (struct jffs2_raw_dirent *) (buf + ofs); + + de->magic = JFFS2_MAGIC_BITMASK; + de->nodetype = JFFS2_NODETYPE_DIRENT; + de->type = type; + de->name_crc = crc32(0, name, strlen(name)); + de->ino = last_ino++; + de->pino = parent; + de->totlen = sizeof(*de) + strlen(name); + de->hdr_crc = crc32(0, (void *) de, sizeof(struct jffs2_unknown_node) - 4); + de->version = last_version++; + de->mctime = 0; + de->nsize = strlen(name); + de->node_crc = crc32(0, (void *) de, sizeof(*de) - 8); + memcpy(de->name, name, strlen(name)); + + ofs += sizeof(struct jffs2_raw_dirent) + de->nsize; + pad(4); + + return de->ino; +} + +static int add_dir(char *name, int parent) +{ + struct jffs2_raw_inode ri; + int inode; + + inode = add_dirent(name, IFTODT(S_IFDIR), parent); + + if (rbytes() < sizeof(ri)) + pad(erasesize); + prep_eraseblock(); + + memset(&ri, 0, sizeof(ri)); + ri.magic = JFFS2_MAGIC_BITMASK; + ri.nodetype = JFFS2_NODETYPE_INODE; + ri.totlen = sizeof(ri); + ri.hdr_crc = crc32(0, &ri, sizeof(struct jffs2_unknown_node) - 4); + + ri.ino = inode; + ri.mode = S_IFDIR | 0755; + ri.uid = ri.gid = 0; + ri.atime = ri.ctime = ri.mtime = 0; + ri.isize = ri.csize = ri.dsize = 0; + ri.version = 1; + ri.node_crc = crc32(0, &ri, sizeof(ri) - 8); + ri.data_crc = 0; + + add_data((char *) &ri, sizeof(ri)); + pad(4); + return inode; +} + +static void add_file(char *name, int parent) +{ + int inode, f_offset = 0, fd; + struct jffs2_raw_inode ri; + struct stat st; + char wbuf[4096], *fname; + FILE *f; + + if (stat(name, &st)) { + fprintf(stderr, "File %s does not exist\n", name); + return; + } + + fname = strrchr(name, '/'); + if (fname) + fname++; + else + fname = name; + + inode = add_dirent(name, IFTODT(S_IFREG), parent); + memset(&ri, 0, sizeof(ri)); + ri.magic = JFFS2_MAGIC_BITMASK; + ri.nodetype = JFFS2_NODETYPE_INODE; + + ri.ino = inode; + ri.mode = st.st_mode; + ri.uid = ri.gid = 0; + ri.atime = st.st_atime; + ri.ctime = st.st_ctime; + ri.mtime = st.st_mtime; + ri.isize = st.st_size; + ri.compr = 0; + ri.usercompr = 0; + + fd = open(name, 0); + if (fd <= 0) { + fprintf(stderr, "File %s does not exist\n", name); + return; + } + + for (;;) { + int len = 0; + + for (;;) { + len = rbytes() - sizeof(ri); + if (len > 128) + break; + + pad(erasesize); + prep_eraseblock(); + } + + if (len > sizeof(wbuf)) + len = sizeof(wbuf); + + len = read(fd, wbuf, len); + if (len <= 0) + break; + + ri.totlen = sizeof(ri) + len; + ri.hdr_crc = crc32(0, &ri, sizeof(struct jffs2_unknown_node) - 4); + ri.version = ++last_version; + ri.offset = f_offset; + ri.csize = ri.dsize = len; + ri.node_crc = crc32(0, &ri, sizeof(ri) - 8); + ri.data_crc = crc32(0, wbuf, len); + f_offset += len; + add_data((char *) &ri, sizeof(ri)); + add_data(wbuf, len); + pad(4); + prep_eraseblock(); + } + + close(fd); +} + +int mtd_write_jffs2(char *mtd, char *filename, char *dir) +{ + int target_ino = 0; + int err = -1, fdeof = 0; + off_t offset; + + outfd = mtd_check_open(mtd); + if (!outfd) + return -1; + + if (quiet < 2) + fprintf(stderr, "Appending %s to jffs2 partition %s\n", filename, mtd); + + buf = malloc(erasesize); + if (!buf) { + fprintf(stderr, "Out of memory!\n"); + goto done; + } + + /* parse the structure of the jffs2 first + * locate the directory that the file is going to be placed in */ + for(;;) { + struct jffs2_unknown_node *node = (struct jffs2_unknown_node *) buf; + unsigned int ofs = 0; + + if (read(outfd, buf, erasesize) != erasesize) { + fdeof = 1; + break; + } + mtdofs += erasesize; + + if (node->magic == 0x8519) { + fprintf(stderr, "Error: wrong endianness filesystem\n"); + goto done; + } + + /* assume no magic == end of filesystem + * the filesystem will probably end with be32(0xdeadc0de) */ + if (node->magic != 0x1985) + break; + + while (ofs < erasesize) { + node = (struct jffs2_unknown_node *) (buf + ofs); + if (node->magic == 0x1985) { + ofs += PAD(node->totlen); + if (node->nodetype == JFFS2_NODETYPE_DIRENT) { + struct jffs2_raw_dirent *de = (struct jffs2_raw_dirent *) node; + + /* is this the right directory name and is it a subdirectory of / */ + if ((de->pino == 1) && !strncmp(de->name, dir, de->nsize)) + target_ino = de->ino; + + /* store the last inode and version numbers for adding extra files */ + if (last_ino < de->ino) + last_ino = de->ino; + if (last_version < de->version) + last_version = de->version; + } + } else { + ofs = ~0; + } + } + } + + if (fdeof) { + fprintf(stderr, "Error: No room for additional data\n"); + goto done; + } + + /* jump back one eraseblock */ + mtdofs -= erasesize; + lseek(outfd, mtdofs, SEEK_SET); + + ofs = 0; + + if (!last_ino) + last_ino = 1; + + if (!target_ino) + target_ino = add_dir(dir, 1); + + add_file(filename, target_ino); + pad(erasesize); + + /* add eof marker, pad to eraseblock size and write the data */ + add_data(JFFS2_EOF, sizeof(JFFS2_EOF) - 1); + pad(erasesize); + + err = 0; + +done: + close(outfd); + if (buf) + free(buf); + + return err; +} diff --git a/package/mtd/src/jffs2.h b/package/mtd/src/jffs2.h new file mode 100644 index 000000000..70d461953 --- /dev/null +++ b/package/mtd/src/jffs2.h @@ -0,0 +1,217 @@ +/* + * JFFS2 -- Journalling Flash File System, Version 2. + * + * Copyright (C) 2001-2003 Red Hat, Inc. + * + * Created by David Woodhouse <dwmw2@infradead.org> + * + * For licensing information, see the file 'LICENCE' in the + * jffs2 directory. + * + * $Id: jffs2.h,v 1.38 2005/09/26 11:37:23 havasi Exp $ + * + */ + +#ifndef __LINUX_JFFS2_H__ +#define __LINUX_JFFS2_H__ + +#define JFFS2_SUPER_MAGIC 0x72b6 + +/* You must include something which defines the C99 uintXX_t types. + We don't do it from here because this file is used in too many + different environments. */ + +/* Values we may expect to find in the 'magic' field */ +#define JFFS2_OLD_MAGIC_BITMASK 0x1984 +#define JFFS2_MAGIC_BITMASK 0x1985 +#define KSAMTIB_CIGAM_2SFFJ 0x8519 /* For detecting wrong-endian fs */ +#define JFFS2_EMPTY_BITMASK 0xffff +#define JFFS2_DIRTY_BITMASK 0x0000 + +/* Summary node MAGIC marker */ +#define JFFS2_SUM_MAGIC 0x02851885 + +/* We only allow a single char for length, and 0xFF is empty flash so + we don't want it confused with a real length. Hence max 254. +*/ +#define JFFS2_MAX_NAME_LEN 254 + +/* How small can we sensibly write nodes? */ +#define JFFS2_MIN_DATA_LEN 128 + +#define JFFS2_COMPR_NONE 0x00 +#define JFFS2_COMPR_ZERO 0x01 +#define JFFS2_COMPR_RTIME 0x02 +#define JFFS2_COMPR_RUBINMIPS 0x03 +#define JFFS2_COMPR_COPY 0x04 +#define JFFS2_COMPR_DYNRUBIN 0x05 +#define JFFS2_COMPR_ZLIB 0x06 +/* Compatibility flags. */ +#define JFFS2_COMPAT_MASK 0xc000 /* What do to if an unknown nodetype is found */ +#define JFFS2_NODE_ACCURATE 0x2000 +/* INCOMPAT: Fail to mount the filesystem */ +#define JFFS2_FEATURE_INCOMPAT 0xc000 +/* ROCOMPAT: Mount read-only */ +#define JFFS2_FEATURE_ROCOMPAT 0x8000 +/* RWCOMPAT_COPY: Mount read/write, and copy the node when it's GC'd */ +#define JFFS2_FEATURE_RWCOMPAT_COPY 0x4000 +/* RWCOMPAT_DELETE: Mount read/write, and delete the node when it's GC'd */ +#define JFFS2_FEATURE_RWCOMPAT_DELETE 0x0000 + +#define JFFS2_NODETYPE_DIRENT (JFFS2_FEATURE_INCOMPAT | JFFS2_NODE_ACCURATE | 1) +#define JFFS2_NODETYPE_INODE (JFFS2_FEATURE_INCOMPAT | JFFS2_NODE_ACCURATE | 2) +#define JFFS2_NODETYPE_CLEANMARKER (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 3) +#define JFFS2_NODETYPE_PADDING (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 4) + +#define JFFS2_NODETYPE_SUMMARY (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 6) + +#define JFFS2_NODETYPE_XATTR (JFFS2_FEATURE_INCOMPAT | JFFS2_NODE_ACCURATE | 8) +#define JFFS2_NODETYPE_XREF (JFFS2_FEATURE_INCOMPAT | JFFS2_NODE_ACCURATE | 9) + +/* XATTR Related */ +#define JFFS2_XPREFIX_USER 1 /* for "user." */ +#define JFFS2_XPREFIX_SECURITY 2 /* for "security." */ +#define JFFS2_XPREFIX_ACL_ACCESS 3 /* for "system.posix_acl_access" */ +#define JFFS2_XPREFIX_ACL_DEFAULT 4 /* for "system.posix_acl_default" */ +#define JFFS2_XPREFIX_TRUSTED 5 /* for "trusted.*" */ + +#define JFFS2_ACL_VERSION 0x0001 + +// Maybe later... +//#define JFFS2_NODETYPE_CHECKPOINT (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 3) +//#define JFFS2_NODETYPE_OPTIONS (JFFS2_FEATURE_RWCOMPAT_COPY | JFFS2_NODE_ACCURATE | 4) + + +#define JFFS2_INO_FLAG_PREREAD 1 /* Do read_inode() for this one at + mount time, don't wait for it to + happen later */ +#define JFFS2_INO_FLAG_USERCOMPR 2 /* User has requested a specific + compression type */ + + +/* These can go once we've made sure we've caught all uses without + byteswapping */ + +typedef uint32_t jint32_t; + +typedef uint32_t jmode_t; + +typedef uint16_t jint16_t; + +struct jffs2_unknown_node +{ + /* All start like this */ + jint16_t magic; + jint16_t nodetype; + jint32_t totlen; /* So we can skip over nodes we don't grok */ + jint32_t hdr_crc; +}; + +struct jffs2_raw_dirent +{ + jint16_t magic; + jint16_t nodetype; /* == JFFS2_NODETYPE_DIRENT */ + jint32_t totlen; + jint32_t hdr_crc; + jint32_t pino; + jint32_t version; + jint32_t ino; /* == zero for unlink */ + jint32_t mctime; + uint8_t nsize; + uint8_t type; + uint8_t unused[2]; + jint32_t node_crc; + jint32_t name_crc; + uint8_t name[0]; +}; + +/* The JFFS2 raw inode structure: Used for storage on physical media. */ +/* The uid, gid, atime, mtime and ctime members could be longer, but + are left like this for space efficiency. If and when people decide + they really need them extended, it's simple enough to add support for + a new type of raw node. +*/ +struct jffs2_raw_inode +{ + jint16_t magic; /* A constant magic number. */ + jint16_t nodetype; /* == JFFS2_NODETYPE_INODE */ + jint32_t totlen; /* Total length of this node (inc data, etc.) */ + jint32_t hdr_crc; + jint32_t ino; /* Inode number. */ + jint32_t version; /* Version number. */ + jmode_t mode; /* The file's type or mode. */ + jint16_t uid; /* The file's owner. */ + jint16_t gid; /* The file's group. */ + jint32_t isize; /* Total resultant size of this inode (used for truncations) */ + jint32_t atime; /* Last access time. */ + jint32_t mtime; /* Last modification time. */ + jint32_t ctime; /* Change time. */ + jint32_t offset; /* Where to begin to write. */ + jint32_t csize; /* (Compressed) data size */ + jint32_t dsize; /* Size of the node's data. (after decompression) */ + uint8_t compr; /* Compression algorithm used */ + uint8_t usercompr; /* Compression algorithm requested by the user */ + jint16_t flags; /* See JFFS2_INO_FLAG_* */ + jint32_t data_crc; /* CRC for the (compressed) data. */ + jint32_t node_crc; /* CRC for the raw inode (excluding data) */ + uint8_t data[0]; +}; + +struct jffs2_raw_xattr { + jint16_t magic; + jint16_t nodetype; /* = JFFS2_NODETYPE_XATTR */ + jint32_t totlen; + jint32_t hdr_crc; + jint32_t xid; /* XATTR identifier number */ + jint32_t version; + uint8_t xprefix; + uint8_t name_len; + jint16_t value_len; + jint32_t data_crc; + jint32_t node_crc; + uint8_t data[0]; +} __attribute__((packed)); + +struct jffs2_raw_xref +{ + jint16_t magic; + jint16_t nodetype; /* = JFFS2_NODETYPE_XREF */ + jint32_t totlen; + jint32_t hdr_crc; + jint32_t ino; /* inode number */ + jint32_t xid; /* XATTR identifier number */ + jint32_t xseqno; /* xref sequencial number */ + jint32_t node_crc; +} __attribute__((packed)); + +struct jffs2_raw_summary +{ + jint16_t magic; + jint16_t nodetype; /* = JFFS2_NODETYPE_SUMMARY */ + jint32_t totlen; + jint32_t hdr_crc; + jint32_t sum_num; /* number of sum entries*/ + jint32_t cln_mkr; /* clean marker size, 0 = no cleanmarker */ + jint32_t padded; /* sum of the size of padding nodes */ + jint32_t sum_crc; /* summary information crc */ + jint32_t node_crc; /* node crc */ + jint32_t sum[0]; /* inode summary info */ +}; + +union jffs2_node_union +{ + struct jffs2_raw_inode i; + struct jffs2_raw_dirent d; + struct jffs2_raw_xattr x; + struct jffs2_raw_xref r; + struct jffs2_raw_summary s; + struct jffs2_unknown_node u; +}; + +/* Data payload for device nodes. */ +union jffs2_device_node { + jint16_t old; + jint32_t new; +}; + +#endif /* __LINUX_JFFS2_H__ */ diff --git a/package/mtd/src/mtd.h b/package/mtd/src/mtd-api.h index 6ce62611e..6ce62611e 100644 --- a/package/mtd/src/mtd.h +++ b/package/mtd/src/mtd-api.h diff --git a/package/mtd/src/mtd.c b/package/mtd/src/mtd.c index 85b069f81..92018c23c 100644 --- a/package/mtd/src/mtd.c +++ b/package/mtd/src/mtd.c @@ -28,6 +28,7 @@ #include <stdlib.h> #include <stdio.h> #include <stdint.h> +#include <signal.h> #include <sys/ioctl.h> #include <sys/syscall.h> #include <fcntl.h> @@ -43,7 +44,7 @@ #include <sys/reboot.h> #include <linux/reboot.h> -#include "mtd.h" +#include "mtd-api.h" #define TRX_MAGIC 0x30524448 /* "HDR0" */ #define BUFSIZE (16 * 1024) @@ -51,6 +52,8 @@ #define DEBUG +#define JFFS2_DEFAULT_DIR "tmp" + #define SYSTYPE_UNKNOWN 0 #define SYSTYPE_BROADCOM 1 /* to be continued */ @@ -63,16 +66,86 @@ struct trx_header { uint32_t offsets[3]; /* Offsets of partitions from start of header */ }; -char buf[BUFSIZE]; -int buflen; +static char buf[BUFSIZE]; +static char *imagefile; +static int buflen; int quiet; +int mtdsize = 0; +int erasesize = 0; + +int mtd_open(const char *mtd) +{ + FILE *fp; + char dev[PATH_MAX]; + int i; + int ret; + int flags = O_RDWR | O_SYNC; + + if ((fp = fopen("/proc/mtd", "r"))) { + while (fgets(dev, sizeof(dev), fp)) { + if (sscanf(dev, "mtd%d:", &i) && strstr(dev, mtd)) { + snprintf(dev, sizeof(dev), "/dev/mtd/%d", i); + if ((ret=open(dev, flags))<0) { + snprintf(dev, sizeof(dev), "/dev/mtd%d", i); + ret=open(dev, flags); + } + fclose(fp); + return ret; + } + } + fclose(fp); + } + + return open(mtd, flags); +} + +int mtd_check_open(const char *mtd) +{ + struct mtd_info_user mtdInfo; + int fd; + + fd = mtd_open(mtd); + if(fd < 0) { + fprintf(stderr, "Could not open mtd device: %s\n", mtd); + return 0; + } + + if(ioctl(fd, MEMGETINFO, &mtdInfo)) { + fprintf(stderr, "Could not get MTD device info from %s\n", mtd); + close(fd); + return 0; + } + mtdsize = mtdInfo.size; + erasesize = mtdInfo.erasesize; + + return fd; +} + +int mtd_erase_block(int fd, int offset) +{ + struct erase_info_user mtdEraseInfo; + + mtdEraseInfo.start = offset; + mtdEraseInfo.length = erasesize; + ioctl(fd, MEMUNLOCK, &mtdEraseInfo); + if (ioctl (fd, MEMERASE, &mtdEraseInfo) < 0) { + fprintf(stderr, "Erasing mtd failed.\n"); + exit(1); + } +} + +int mtd_write_buffer(int fd, char *buf, int offset, int length) +{ + lseek(fd, offset, SEEK_SET); + write(fd, buf, length); +} + #ifdef target_brcm -int +static int image_check_brcm(int imagefd, const char *mtd) { struct trx_header *trx = (struct trx_header *) buf; - struct mtd_info_user mtdInfo; int fd; if (strcmp(mtd, "linux") != 0) @@ -94,18 +167,13 @@ image_check_brcm(int imagefd, const char *mtd) } /* check if image fits to mtd device */ - fd = mtd_open(mtd, O_RDWR | O_SYNC); + fd = mtd_check_open(mtd); if(fd < 0) { fprintf(stderr, "Could not open mtd device: %s\n", mtd); exit(1); } - if(ioctl(fd, MEMGETINFO, &mtdInfo)) { - fprintf(stderr, "Could not get MTD device info from %s\n", mtd); - exit(1); - } - - if(mtdInfo.size < trx->len) { + if(mtdsize < trx->len) { fprintf(stderr, "Image too big for partition: %s\n", mtd); close(fd); return 0; @@ -116,7 +184,7 @@ image_check_brcm(int imagefd, const char *mtd) } #endif /* target_brcm */ -int +static int image_check(int imagefd, const char *mtd) { int fd, systype; @@ -129,48 +197,35 @@ image_check(int imagefd, const char *mtd) #endif } -int mtd_check(char *mtd) +static int mtd_check(const char *mtd) { - struct mtd_info_user mtdInfo; int fd; - fd = mtd_open(mtd, O_RDWR | O_SYNC); - if(fd < 0) { - fprintf(stderr, "Could not open mtd device: %s\n", mtd); + fd = mtd_check_open(mtd); + if (!fd) return 0; - } - - if(ioctl(fd, MEMGETINFO, &mtdInfo)) { - fprintf(stderr, "Could not get MTD device info from %s\n", mtd); - close(fd); - return 0; - } close(fd); return 1; } -int +static int mtd_unlock(const char *mtd) { int fd; - struct mtd_info_user mtdInfo; struct erase_info_user mtdLockInfo; - fd = mtd_open(mtd, O_RDWR | O_SYNC); - if(fd < 0) { + fd = mtd_check_open(mtd); + if(fd <= 0) { fprintf(stderr, "Could not open mtd device: %s\n", mtd); exit(1); } - if(ioctl(fd, MEMGETINFO, &mtdInfo)) { - fprintf(stderr, "Could not get MTD device info from %s\n", mtd); - close(fd); - exit(1); - } + if (quiet < 2) + fprintf(stderr, "Unlocking %s ...\n", mtd); mtdLockInfo.start = 0; - mtdLockInfo.length = mtdInfo.size; + mtdLockInfo.length = mtdsize; if(ioctl(fd, MEMUNLOCK, &mtdLockInfo)) { close(fd); return 0; @@ -180,56 +235,26 @@ mtd_unlock(const char *mtd) return 0; } -int -mtd_open(const char *mtd, int flags) -{ - FILE *fp; - char dev[PATH_MAX]; - int i; - int ret; - - if ((fp = fopen("/proc/mtd", "r"))) { - while (fgets(dev, sizeof(dev), fp)) { - if (sscanf(dev, "mtd%d:", &i) && strstr(dev, mtd)) { - snprintf(dev, sizeof(dev), "/dev/mtd/%d", i); - if ((ret=open(dev, flags))<0) { - snprintf(dev, sizeof(dev), "/dev/mtd%d", i); - ret=open(dev, flags); - } - fclose(fp); - return ret; - } - } - fclose(fp); - } - - return open(mtd, flags); -} - -int +static int mtd_erase(const char *mtd) { int fd; - struct mtd_info_user mtdInfo; struct erase_info_user mtdEraseInfo; - fd = mtd_open(mtd, O_RDWR | O_SYNC); - if(fd < 0) { - fprintf(stderr, "Could not open mtd device: %s\n", mtd); - exit(1); - } + if (quiet < 2) + fprintf(stderr, "Erasing %s ...\n", mtd); - if(ioctl(fd, MEMGETINFO, &mtdInfo)) { - fprintf(stderr, "Could not get MTD device info from %s\n", mtd); - close(fd); + fd = mtd_check_open(mtd); + if(fd <= 0) { + fprintf(stderr, "Could not open mtd device: %s\n", mtd); exit(1); } - mtdEraseInfo.length = mtdInfo.erasesize; + mtdEraseInfo.length = erasesize; for (mtdEraseInfo.start = 0; - mtdEraseInfo.start < mtdInfo.size; - mtdEraseInfo.start += mtdInfo.erasesize) { + mtdEraseInfo.start < mtdsize; + mtdEraseInfo.start += erasesize) { ioctl(fd, MEMUNLOCK, &mtdEraseInfo); if(ioctl(fd, MEMERASE, &mtdEraseInfo)) @@ -241,46 +266,50 @@ mtd_erase(const char *mtd) } -int +static int mtd_refresh(const char *mtd) { int fd; - fd = mtd_open(mtd, O_RDWR | O_SYNC); - if(fd < 0) { + if (quiet < 2) + fprintf(stderr, "Refreshing mtd partition %s ... ", mtd); + + fd = mtd_check_open(mtd); + if(fd <= 0) { fprintf(stderr, "Could not open mtd device: %s\n", mtd); exit(1); } + if (ioctl(fd, MTDREFRESH, NULL)) { fprintf(stderr, "Failed to refresh the MTD device\n"); close(fd); exit(1); } close(fd); + + if (quiet < 2) + fprintf(stderr, "\n"); + return 0; } -int +static int mtd_write(int imagefd, const char *mtd) { int fd, i, result; size_t r, w, e; - struct mtd_info_user mtdInfo; struct erase_info_user mtdEraseInfo; int ret = 0; - fd = mtd_open(mtd, O_RDWR | O_SYNC); + fd = mtd_check_open(mtd); if(fd < 0) { fprintf(stderr, "Could not open mtd device: %s\n", mtd); exit(1); } - - if(ioctl(fd, MEMGETINFO, &mtdInfo)) { - fprintf(stderr, "Could not get MTD device info from %s\n", mtd); - close(fd); - exit(1); - } + if (quiet < 2) + fprintf(stderr, "Writing from %s to %s ... ", imagefile, mtd); + r = w = e = 0; if (!quiet) fprintf(stderr, " [ ]"); @@ -296,17 +325,13 @@ mtd_write(int imagefd, const char *mtd) /* need to erase the next block before writing data to it */ while (w > e) { - mtdEraseInfo.start = e; - mtdEraseInfo.length = mtdInfo.erasesize; - if (!quiet) fprintf(stderr, "\b\b\b[e]"); + + mtd_erase_block(fd, e); + /* erase the chunk */ - if (ioctl (fd,MEMERASE,&mtdEraseInfo) < 0) { - fprintf(stderr, "Erasing mtd failed: %s\n", mtd); - exit(1); - } - e += mtdInfo.erasesize; + e += erasesize; } if (!quiet) @@ -327,11 +352,14 @@ mtd_write(int imagefd, const char *mtd) if (!quiet) fprintf(stderr, "\b\b\b\b"); + if (quiet < 2) + fprintf(stderr, "\n"); + close(fd); return 0; } -void usage(void) +static void usage(void) { fprintf(stderr, "Usage: mtd [<options> ...] <command> [<arguments> ...] <device>\n\n" "The device is in the format of mtdX (eg: mtd4) or its label.\n" @@ -340,26 +368,44 @@ void usage(void) " refresh refresh mtd partition\n" " erase erase all data on device\n" " write <imagefile>|- write <imagefile> (use - for stdin) to device\n" + " jffs2write <file> append <file> to the jffs2 partition on the device\n" "Following options are available:\n" " -q quiet mode (once: no [w] on writing,\n" " twice: no status messages)\n" " -r reboot after successful command\n" " -f force write without trx checks\n" - " -e <device> erase <device> before executing the command\n\n" + " -e <device> erase <device> before executing the command\n" + " -d <name> directory for jffs2write, defaults to \"tmp\"\n" + "\n" "Example: To write linux.trx to mtd4 labeled as linux and reboot afterwards\n" " mtd -r write linux.trx linux\n\n"); exit(1); } +static void do_reboot(void) +{ + fprintf(stderr, "Rebooting ...\n"); + fflush(stderr); + + /* try regular reboot method first */ + system("/sbin/reboot"); + sleep(2); + + /* if we're still alive at this point, force the kernel to reboot */ + syscall(SYS_reboot,LINUX_REBOOT_MAGIC1,LINUX_REBOOT_MAGIC2,LINUX_REBOOT_CMD_RESTART,NULL); +} + int main (int argc, char **argv) { int ch, i, boot, unlock, imagefd, force, unlocked; - char *erase[MAX_ARGS], *device, *imagefile; + char *erase[MAX_ARGS], *device; + char *jffs2dir = JFFS2_DEFAULT_DIR; enum { CMD_ERASE, CMD_WRITE, CMD_UNLOCK, - CMD_REFRESH + CMD_REFRESH, + CMD_JFFS2WRITE } cmd; erase[0] = NULL; @@ -368,7 +414,7 @@ int main (int argc, char **argv) buflen = 0; quiet = 0; - while ((ch = getopt(argc, argv, "frqe:")) != -1) + while ((ch = getopt(argc, argv, "frqe:d:")) != -1) switch (ch) { case 'f': force = 1; @@ -387,7 +433,9 @@ int main (int argc, char **argv) erase[i++] = optarg; erase[i] = NULL; break; - + case 'd': + jffs2dir = optarg; + break; case '?': default: usage(); @@ -434,6 +482,15 @@ int main (int argc, char **argv) exit(1); } } + } else if ((strcmp(argv[0], "jffs2write") == 0) && (argc == 3)) { + cmd = CMD_JFFS2WRITE; + device = argv[2]; + + imagefile = argv[1]; + if (!mtd_check(device)) { + fprintf(stderr, "Can't open device for writing!\n"); + exit(1); + } } else { usage(); } @@ -443,53 +500,43 @@ int main (int argc, char **argv) i = 0; unlocked = 0; while (erase[i] != NULL) { - if (quiet < 2) - fprintf(stderr, "Unlocking %s ...\n", erase[i]); mtd_unlock(erase[i]); - if (quiet < 2) - fprintf(stderr, "Erasing %s ...\n", erase[i]); mtd_erase(erase[i]); if (strcmp(erase[i], device) == 0) unlocked = 1; i++; } - if (!unlocked) { - if (quiet < 2) - fprintf(stderr, "Unlocking %s ...\n", device); - mtd_unlock(device); - } switch (cmd) { case CMD_UNLOCK: + if (!unlocked) + mtd_unlock(device); break; case CMD_ERASE: - if (quiet < 2) - fprintf(stderr, "Erasing %s ...\n", device); + if (!unlocked) + mtd_unlock(device); mtd_erase(device); break; case CMD_WRITE: - if (quiet < 2) - fprintf(stderr, "Writing from %s to %s ... ", imagefile, device); + if (!unlocked) + mtd_unlock(device); mtd_write(imagefd, device); - if (quiet < 2) - fprintf(stderr, "\n"); + break; + case CMD_JFFS2WRITE: + if (!unlocked) + mtd_unlock(device); + mtd_write_jffs2(device, imagefile, jffs2dir); break; case CMD_REFRESH: - if (quiet < 2) - fprintf(stderr, "Refreshing mtd partition %s ... "); mtd_refresh(device); - if (quiet < 2) - fprintf(stderr, "\n"); break; } sync(); - if (boot) { - fprintf(stderr, "Rebooting ...\n"); - fflush(stderr); - syscall(SYS_reboot,LINUX_REBOOT_MAGIC1,LINUX_REBOOT_MAGIC2,LINUX_REBOOT_CMD_RESTART,NULL); - } + if (boot) + do_reboot(); + return 0; } |