diff options
Diffstat (limited to 'target/cramfs/cramfs-02-endian.patch')
| -rw-r--r-- | target/cramfs/cramfs-02-endian.patch | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/target/cramfs/cramfs-02-endian.patch b/target/cramfs/cramfs-02-endian.patch index 4c28b8397..0da55bfae 100644 --- a/target/cramfs/cramfs-02-endian.patch +++ b/target/cramfs/cramfs-02-endian.patch @@ -132,3 +132,153 @@ case 's': /* old option, ignored */ break; +--- cramfs-1.1/cramfsck.c.orig 2005-04-25 11:50:31.000000000 -0700 ++++ cramfs-1.1/cramfsck.c 2005-04-25 16:53:25.000000000 -0700 +@@ -30,6 +30,7 @@ + * 2000/07/15: Daniel Quinlan (initial support for block devices) + * 2002/01/10: Daniel Quinlan (additional checks, test more return codes, + * use read if mmap fails, standardize messages) ++ * 2004/09/01: Alfonso Acosta (Add swapping support) + */ + + /* compile-time options */ +@@ -51,6 +52,7 @@ + #include <utime.h> + #include <sys/ioctl.h> + #define _LINUX_STRING_H_ ++#include <byteswap.h> + #include "linux/cramfs_fs.h" + #include <zlib.h> + +@@ -74,6 +76,7 @@ + static char *filename; /* ROM image filename */ + struct cramfs_super super; /* just find the cramfs superblock once */ + static int opt_verbose = 0; /* 1 = verbose (-v), 2+ = very verbose (-vv) */ ++static int need_swapping = 0; /* fs and host dont have the same endianness */ + #ifdef INCLUDE_FS_TESTS + static int opt_extract = 0; /* extract cramfs (-x) */ + static char *extract_dir = "/"; /* extraction directory (-x) */ +@@ -85,6 +88,9 @@ + static unsigned long start_data = ~0UL; /* start of the data (256 MB = max) */ + static unsigned long end_data = 0; /* end of the data */ + ++/* access 32 byte variables */ ++#define CRAMFS_32(x) (need_swapping ? bswap_32(x) : x) ++ + /* Guarantee access to at least 8kB at a time */ + #define ROMBUFFER_BITS 13 + #define ROMBUFFERSIZE (1 << ROMBUFFER_BITS) +@@ -166,20 +172,34 @@ + if (super.magic == CRAMFS_MAGIC) { + *start = 0; + } ++ else if (super.magic == bswap_32(CRAMFS_MAGIC)) { ++ *start = 0; ++ need_swapping = 1; ++ } ++ + else if (*length >= (PAD_SIZE + sizeof(super))) { + lseek(fd, PAD_SIZE, SEEK_SET); + if (read(fd, &super, sizeof(super)) != sizeof(super)) { + die(FSCK_ERROR, 1, "read failed: %s", filename); + } +- if (super.magic == CRAMFS_MAGIC) { ++ if (super.magic == CRAMFS_32(CRAMFS_MAGIC)) { + *start = PAD_SIZE; + } + } + + /* superblock tests */ +- if (super.magic != CRAMFS_MAGIC) { ++ if (super.magic != CRAMFS_32(CRAMFS_MAGIC)) { + die(FSCK_UNCORRECTED, 0, "superblock magic not found"); + } ++ if (need_swapping){ ++ super.size = bswap_32(super.size); ++ super.flags = bswap_32(super.flags); ++ super.future = bswap_32(super.future); ++ super.fsid.crc = bswap_32(super.fsid.crc); ++ super.fsid.edition = bswap_32(super.fsid.edition); ++ super.fsid.blocks = bswap_32(super.fsid.blocks); ++ super.fsid.files = bswap_32(super.fsid.files); ++ } + if (super.flags & ~CRAMFS_SUPPORTED_FLAGS) { + die(FSCK_ERROR, 0, "unsupported filesystem features"); + } +@@ -215,7 +235,10 @@ + die(FSCK_USAGE, 0, "unable to test CRC: old cramfs format"); + #endif /* not INCLUDE_FS_TESTS */ + } +- ++ else if (need_swapping) { ++ /* crc checking in this case would mean translating the whole file */ ++ return; ++ } + crc = crc32(0L, Z_NULL, 0); + + buf = mmap(NULL, super.size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0); +@@ -300,12 +323,23 @@ + + static struct cramfs_inode *cramfs_iget(struct cramfs_inode * i) + { ++#define wswap(x) (((x)>>24) | (((x)>>8)&0xff00) | (((x)&0xff00)<<8) | (((x)&0xff)<<24)) + struct cramfs_inode *inode = malloc(sizeof(struct cramfs_inode)); + + if (!inode) { + die(FSCK_ERROR, 1, "malloc failed"); + } +- *inode = *i; ++ if(!need_swapping) { ++ *inode = *i; ++ } ++ else { ++ inode->mode=bswap_16(i->mode); ++ inode->uid=bswap_16(i->uid); ++ inode->size=bswap_32(i->size << 8); ++ inode->gid=i->gid; ++ inode->namelen = bswap_32(((u32*)i)[2]) >> 26; ++ inode->offset = bswap_32(((u32*)i)[2]) & 0x3FFFFFFF; ++ } + return inode; + } + +@@ -324,9 +358,9 @@ + */ + static struct cramfs_inode *read_super(void) + { +- unsigned long offset = super.root.offset << 2; +- +- if (!S_ISDIR(super.root.mode)) ++ struct cramfs_inode *root = cramfs_iget(&super.root); ++ unsigned long offset = root->offset << 2; ++ if (!S_ISDIR(root->mode)) + die(FSCK_UNCORRECTED, 0, "root inode is not directory"); + if (!(super.flags & CRAMFS_FLAG_SHIFTED_ROOT_OFFSET) && + ((offset != sizeof(struct cramfs_super)) && +@@ -334,7 +368,7 @@ + { + die(FSCK_UNCORRECTED, 0, "bad root offset (%lu)", offset); + } +- return cramfs_iget(&super.root); ++ return root; + } + + static int uncompress_block(void *src, int len) +@@ -366,7 +400,7 @@ + + do { + unsigned long out = PAGE_CACHE_SIZE; +- unsigned long next = *(u32 *) romfs_read(offset); ++ unsigned long next = CRAMFS_32(*(u32 *) romfs_read(offset)); + + if (next > end_data) { + end_data = next; +@@ -529,7 +563,7 @@ + { + unsigned long offset = i->offset << 2; + unsigned long curr = offset + 4; +- unsigned long next = *(u32 *) romfs_read(offset); ++ unsigned long next = CRAMFS_32(*(u32 *) romfs_read(offset)); + unsigned long size; + + if (offset == 0) { |