From 4ebf19b48fafc8d94e14e4ba779969613b241a6a Mon Sep 17 00:00:00 2001 From: John Crispin Date: Fri, 21 Jun 2013 16:54:37 +0000 Subject: packages: clean up the package folder Signed-off-by: John Crispin SVN-Revision: 37007 --- package/mtd/src/jffs2.c | 357 ------------------------------------------------ 1 file changed, 357 deletions(-) delete mode 100644 package/mtd/src/jffs2.c (limited to 'package/mtd/src/jffs2.c') diff --git a/package/mtd/src/jffs2.c b/package/mtd/src/jffs2.c deleted file mode 100644 index 2a83bd4..0000000 --- a/package/mtd/src/jffs2.c +++ /dev/null @@ -1,357 +0,0 @@ -/* - * jffs2 on-disk structure generator for mtd - * - * Copyright (C) 2008 Felix Fietkau - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License v2 - * as published by the Free Software Foundation. - * - * 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. - * Based on: - * JFFS2 -- Journalling Flash File System, Version 2. - * Copyright © 2001-2007 Red Hat, Inc. - * Created by David Woodhouse - */ -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include "jffs2.h" -#include "crc32.h" -#include "mtd.h" - -#define PAD(x) (((x)+3)&~3) - -#if BYTE_ORDER == BIG_ENDIAN -# define CLEANMARKER "\x19\x85\x20\x03\x00\x00\x00\x0c\xf0\x60\xdc\x98" -#else -# define CLEANMARKER "\x85\x19\x03\x20\x0c\x00\x00\x00\xb1\xb0\x1e\xe4" -#endif - -static int last_ino = 0; -static int last_version = 0; -static char *buf = NULL; -static int ofs = 0; -static int outfd = -1; -static int mtdofs = 0; -static int target_ino = 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(const char *name, const 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(const 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(const char *name, int parent) -{ - int inode, f_offset = 0, fd; - struct jffs2_raw_inode ri; - struct stat st; - char wbuf[4096]; - const char *fname; - - 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(fname, 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_replace_jffs2(const char *mtd, int fd, int ofs, const char *filename) -{ - outfd = fd; - mtdofs = ofs; - - buf = malloc(erasesize); - target_ino = 1; - if (!last_ino) - last_ino = 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); - free(buf); - - return (mtdofs - ofs); -} - -void mtd_parse_jffs2data(const char *buf, const char *dir) -{ - struct jffs2_unknown_node *node = (struct jffs2_unknown_node *) buf; - unsigned int ofs = 0; - - while (ofs < erasesize) { - node = (struct jffs2_unknown_node *) (buf + ofs); - if (node->magic != 0x1985) - break; - - 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 (*dir && (de->pino == 1) && !strncmp((char *) 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; - } - } -} - -int mtd_write_jffs2(const char *mtd, const char *filename, const char *dir) -{ - int err = -1, fdeof = 0; - - outfd = mtd_check_open(mtd); - if (outfd < 0) - 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; - } - - if (!*dir) - target_ino = 1; - - /* 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; - - 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; - - mtd_parse_jffs2data(buf, dir); - } - - 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; - - if (trx_fixup) { - trx_fixup(outfd, mtd); - } - -done: - close(outfd); - if (buf) - free(buf); - - return err; -} -- cgit v1.1