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Diffstat (limited to 'hostTools/squashfs/mksquashfs.c')
| -rw-r--r-- | hostTools/squashfs/mksquashfs.c | 1971 |
1 files changed, 1971 insertions, 0 deletions
diff --git a/hostTools/squashfs/mksquashfs.c b/hostTools/squashfs/mksquashfs.c new file mode 100644 index 0000000..e327a01 --- /dev/null +++ b/hostTools/squashfs/mksquashfs.c @@ -0,0 +1,1971 @@ +/* + * Create a squashfs filesystem. This is a highly compressed read only filesystem. + * + * Copyright (c) 2002, 2003, 2004 Phillip Lougher <plougher@users.sourceforge.net> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2, + * or (at your option) any later version. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * mksquashfs.c + */ + +#define TRUE 1 +#include <pwd.h> +#include <grp.h> +#include <time.h> +#include <unistd.h> +#include <stdio.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <errno.h> +#include <dirent.h> +#include <string.h> +#include <zlib.h> +#include <endian.h> +#include <stdlib.h> +#include <signal.h> +#include <setjmp.h> +#include <sys/mman.h> + +#include "mksquashfs.h" +#include <squashfs_fs.h> +/* BRCM begin */ +#include "7zapi.h" +/* BRCM end */ + +#ifdef SQUASHFS_TRACE +#define TRACE(s, args...) printf("mksquashfs: "s, ## args) +#else +#define TRACE(s, args...) +#endif + +#define INFO(s, args...) do { if(!silent) printf("mksquashfs: "s, ## args); } while(0) +#define ERROR(s, args...) do { fprintf(stderr, s, ## args); } while(0) +#define EXIT_MKSQUASHFS() do { if(restore)\ + restorefs();\ + exit(1); } while(0) +#define BAD_ERROR(s, args...) do {\ + fprintf(stderr, "FATAL ERROR:" s, ##args);\ + EXIT_MKSQUASHFS();\ + } while(0) + +int duplicate_checking = 1, noF = 0, no_fragments = 0, always_use_fragments = 0; +int total_compressed = 0, total_uncompressed = 0; + +int fd; + +/* superblock attributes */ +int noI = 0, noD = 0, check_data = 0, block_size = SQUASHFS_FILE_SIZE, block_log; +unsigned short uid_count = 0, guid_count = 0; +squashfs_uid uids[SQUASHFS_UIDS], guids[SQUASHFS_GUIDS]; +int block_offset; + +/* write position within data section */ +unsigned int bytes = 0, total_bytes = 0; + +/* in memory directory table - possibly compressed */ +char *directory_table = NULL; +unsigned int directory_bytes = 0, directory_size = 0, total_directory_bytes = 0; + +/* cached directory table */ +char *directory_data_cache = NULL; +unsigned int directory_cache_bytes = 0, directory_cache_size = 0; + +/* in memory inode table - possibly compressed */ +char *inode_table = NULL; +unsigned int inode_bytes = 0, inode_size = 0, total_inode_bytes = 0; + +/* cached inode table */ +char *data_cache = NULL; +unsigned int cache_bytes = 0, cache_size = 0, inode_count = 0; + +/* in memory directory header */ +struct directory { + unsigned int start_block; + unsigned int size; + unsigned char *buff; + unsigned char *p; + unsigned int entry_count; + squashfs_dir_header *entry_count_p; +}; + +struct file_info *dupl[65536], *frag_dups[65536]; +int dup_files = 0; + +int swap, silent = TRUE; +int file_count = 0, sym_count = 0, dev_count = 0, dir_count = 0, fifo_count = 0, sock_count = 0; + +/* list of exclude dirs/files */ +struct exclude_info { + dev_t st_dev; + ino_t st_ino; +}; + +#define EXCLUDE_SIZE 8192 +int exclude = 0; +struct exclude_info *exclude_paths = NULL; +int excluded(char *filename, struct stat *buf); + +/* fragment block data structures */ +int fragments = 0; +static char *fragment_data; +static int fragment_size = 0; +struct fragment { + unsigned int index; + int offset; + int size; +}; + + +#define FRAG_SIZE 32768 +squashfs_fragment_entry *fragment_table = NULL; + +/* list of source dirs/files */ +int source = 0; +char **source_path; + +/* list of root directory entries read from original filesystem */ +int old_root_entries = 0; +struct old_root_entry_info { + char name[SQUASHFS_NAME_LEN + 1]; + squashfs_inode inode; + int type; +}; + +/* in memory file info */ +struct file_info { + unsigned int bytes; + unsigned short checksum; + unsigned int start; + unsigned int *block_list; + struct file_info *next; + struct fragment *fragment; + unsigned short fragment_checksum; +}; + +/* count of how many times SIGINT or SIGQUIT has been sent */ +int interrupted = 0; + +/* restore orignal filesystem state if appending to existing filesystem is cancelled */ +jmp_buf env; +char *sdata_cache, *sdirectory_data_cache; +unsigned int sbytes, sinode_bytes, scache_bytes, sdirectory_bytes, + sdirectory_cache_bytes, suid_count, sguid_count, + stotal_bytes, stotal_inode_bytes, stotal_directory_bytes, + sinode_count, sfile_count, ssym_count, sdev_count, + sdir_count, sdup_files; +int sfragments; +int restore = 0; + +/*flag whether destination file is a block device */ +int block_device = 0; + +/* flag indicating whether files are sorted using sort list(s) */ +int sorted = 0; + +long long global_uid = -1, global_gid = -1; + +/* structure to used to pass in a pointer or an integer + * to duplicate buffer read helper functions. + */ +struct duplicate_buffer_handle { + unsigned char *ptr; + unsigned int start; +}; + +struct old_root_entry_info *old_root_entry; +void add_old_root_entry(char *name, squashfs_inode inode, int type); +extern int read_super(int fd, squashfs_super_block *sBlk, int *be, char *source); +extern int read_filesystem(char *root_name, int fd, squashfs_super_block *sBlk, char **inode_table, int *inode_bytes, + char **data_cache, int *cache_bytes, int *cache_size, char **directory_table, int *directory_bytes, + char **directory_data_cache, int *directory_cache_bytes, int *directory_cache_size, + int *file_count, int *sym_count, int *dev_count, int *dir_count, int *fifo_count, int *sock_count, + squashfs_uid *uids, unsigned short *uid_count, squashfs_uid *guids, unsigned short *guid_count, + unsigned int *uncompressed_file, unsigned int *uncompressed_inode, unsigned int *uncompressed_directory, + void (push_directory_entry)(char *, squashfs_inode, int), squashfs_fragment_entry **fragment_table); +squashfs_inode get_sorted_inode(struct stat *buf); +int read_sort_file(char *filename, int source, char *source_path[]); +void sort_files_and_write(int source, char *source_path[]); +struct file_info *duplicate(unsigned char *(get_next_file_block)(struct duplicate_buffer_handle *, unsigned int), struct duplicate_buffer_handle *file_start, int bytes, unsigned int **block_list, int *start, int blocks, struct fragment **fragment, char *frag_data, int frag_bytes); + +#define FALSE 0 + +#define MKINODE(A) ((squashfs_inode)(((squashfs_inode) inode_bytes << 16) + (((char *)A) - data_cache))) + +/* BRCM begin */ +#define LZMA 0 +#define GZIP 1 +int compress_algorithm = LZMA; +/* BRCM end */ + +void restorefs() +{ + ERROR("Exiting - restoring original filesystem!\n\n"); + bytes = sbytes; + memcpy(data_cache, sdata_cache, cache_bytes = scache_bytes); + memcpy(directory_data_cache, sdirectory_data_cache, directory_cache_bytes = sdirectory_cache_bytes); + inode_bytes = sinode_bytes; + directory_bytes = sdirectory_bytes; + uid_count = suid_count; + guid_count = sguid_count; + total_bytes = stotal_bytes; + total_inode_bytes = stotal_inode_bytes; + total_directory_bytes = stotal_directory_bytes; + inode_count = sinode_count; + file_count = sfile_count; + sym_count = ssym_count; + dev_count = sdev_count; + dir_count = sdir_count; + dup_files = sdup_files; + fragments = sfragments; + fragment_size = 0; + longjmp(env, 1); +} + + +void sighandler() +{ + if(interrupted == 1) + restorefs(); + else { + ERROR("Interrupting will restore original filesystem!\n"); + ERROR("Interrupt again to quit\n"); + interrupted ++; + } +} + + +unsigned int mangle(char *d, char *s, int size, int block_size, int uncompressed, int data_block) +{ + unsigned long c_byte; + unsigned int res; + + /* BRCM begin */ + if (compress_algorithm == GZIP) { + c_byte = block_size << 1; + if(!uncompressed && (res = compress2(d, &c_byte, s, size, 9)) != Z_OK) { + if(res == Z_MEM_ERROR) + BAD_ERROR("zlib::compress failed, not enough memory\n"); + else if(res == Z_BUF_ERROR) + BAD_ERROR("zlib::compress failed, not enough room in output buffer\n"); + else + BAD_ERROR("zlib::compress failed, unknown error %d\n", res); + return 0; + } + } + + if (compress_algorithm == LZMA) { + unsigned lzma_algo; + unsigned lzma_dictsize; + unsigned lzma_fastbytes; + int opt_compression_level = 1; + + c_byte = block_size << 3; + switch (opt_compression_level) { + case 1 : + lzma_algo = 1; + lzma_dictsize = 1 << 20; + lzma_fastbytes = 64; + break; + case 2 : + lzma_algo = 2; + lzma_dictsize = 1 << 22; + lzma_fastbytes = 128; + break; + case 3 : + lzma_algo = 2; + lzma_dictsize = 1 << 24; + lzma_fastbytes = 255; + break; + default : + BAD_ERROR("Invalid LZMA compression level. Must be 1,2,3."); + return 0; + } + if(!uncompressed && !(res = compress_lzma_7zapi((const unsigned char*)s, + (unsigned)size, + (unsigned char*)d, + (unsigned *)&c_byte, + lzma_algo, lzma_dictsize, lzma_fastbytes))) { + /* this should NEVER happen */ + BAD_ERROR("Internal error - LZMA compression failed.\n"); + return 0; + } + //printf("LZMA: block_size=%d, in_size=%d, out_size=%d\n", block_size, size, c_byte); + } + /* BRCM end */ + + if(uncompressed || c_byte >= size) { + memcpy(d, s, size); + return size | (data_block ? SQUASHFS_COMPRESSED_BIT_BLOCK : SQUASHFS_COMPRESSED_BIT); + } + + return (unsigned int) c_byte; +} + + +squashfs_base_inode_header *get_inode(int req_size) +{ + int data_space; + unsigned short c_byte; + + while(cache_bytes >= SQUASHFS_METADATA_SIZE) { + if((inode_size - inode_bytes) < ((SQUASHFS_METADATA_SIZE << 1)) + 2) { + if((inode_table = (char *) realloc(inode_table, inode_size + (SQUASHFS_METADATA_SIZE << 1) + 2)) + == NULL) { + goto failed; + } + inode_size += (SQUASHFS_METADATA_SIZE << 1) + 2; + } + + c_byte = mangle(inode_table + inode_bytes + block_offset, data_cache, + SQUASHFS_METADATA_SIZE, SQUASHFS_METADATA_SIZE, noI, 0); + TRACE("Inode block @ %x, size %d\n", inode_bytes, c_byte); + if(!swap) + memcpy((void *) (inode_table + inode_bytes), (void *) &c_byte, sizeof(unsigned short)); + else + SQUASHFS_SWAP_SHORTS((&c_byte), (inode_table + inode_bytes), 1); + if(check_data) + *((unsigned char *)(inode_table + inode_bytes + block_offset - 1)) = SQUASHFS_MARKER_BYTE; + inode_bytes += SQUASHFS_COMPRESSED_SIZE(c_byte) + block_offset; + total_inode_bytes += SQUASHFS_METADATA_SIZE + block_offset; + memcpy(data_cache, data_cache + SQUASHFS_METADATA_SIZE, cache_bytes - SQUASHFS_METADATA_SIZE); + cache_bytes -= SQUASHFS_METADATA_SIZE; + } + + data_space = (cache_size - cache_bytes); + if(data_space < req_size) { + int realloc_size = cache_size == 0 ? ((req_size + SQUASHFS_METADATA_SIZE) & ~(SQUASHFS_METADATA_SIZE - 1)) : req_size - data_space; + + if((data_cache = (char *) realloc(data_cache, cache_size + realloc_size)) == NULL) { + goto failed; + } + cache_size += realloc_size; + } + + cache_bytes += req_size; + + return (squashfs_base_inode_header *)(data_cache + (cache_bytes - req_size)); + +failed: + BAD_ERROR("Out of memory in inode table reallocation!\n"); +} + + +void read_bytes(int fd, unsigned int byte, int bytes, char *buff) +{ + off_t off = byte; + + if(lseek(fd, off, SEEK_SET) == -1) { + perror("Lseek on destination failed"); + EXIT_MKSQUASHFS(); + } + + if(read(fd, buff, bytes) == -1) { + perror("Read on destination failed"); + EXIT_MKSQUASHFS(); + } +} + + +void write_bytes(int fd, unsigned int byte, int bytes, char *buff) +{ + off_t off = byte; + + if(off + bytes > ((long long)1<<32) - 1 ) + BAD_ERROR("Filesystem greater than maximum size 2^32 - 1\n"); + + if(lseek(fd, off, SEEK_SET) == -1) { + perror("Lseek on destination failed"); + EXIT_MKSQUASHFS(); + } + + if(write(fd, buff, bytes) == -1) { + perror("Write on destination failed"); + EXIT_MKSQUASHFS(); + } +} + + +unsigned int write_inodes() +{ + unsigned short c_byte; + int avail_bytes; + char *datap = data_cache; + unsigned int start_bytes = bytes; + + while(cache_bytes) { + if(inode_size - inode_bytes < ((SQUASHFS_METADATA_SIZE << 1) + 2)) { + if((inode_table = (char *) realloc(inode_table, inode_size + ((SQUASHFS_METADATA_SIZE << 1) + 2))) == NULL) { + BAD_ERROR("Out of memory in inode table reallocation!\n"); + } + inode_size += (SQUASHFS_METADATA_SIZE << 1) + 2; + } + avail_bytes = cache_bytes > SQUASHFS_METADATA_SIZE ? SQUASHFS_METADATA_SIZE : cache_bytes; + c_byte = mangle(inode_table + inode_bytes + block_offset, datap, avail_bytes, SQUASHFS_METADATA_SIZE, noI, 0); + TRACE("Inode block @ %x, size %d\n", inode_bytes, c_byte); + if(!swap) + memcpy((void *) (inode_table + inode_bytes), (void *) &c_byte, sizeof(unsigned short)); + else + SQUASHFS_SWAP_SHORTS((&c_byte), (inode_table + inode_bytes), 1); + if(check_data) + *((unsigned char *)(inode_table + inode_bytes + block_offset - 1)) = SQUASHFS_MARKER_BYTE; + inode_bytes += SQUASHFS_COMPRESSED_SIZE(c_byte) + block_offset; + total_inode_bytes += avail_bytes + block_offset; + datap += avail_bytes; + cache_bytes -= avail_bytes; + } + + write_bytes(fd, bytes, inode_bytes, (char *) inode_table); + bytes += inode_bytes; + + return start_bytes; +} + + +unsigned int write_directories() +{ + unsigned short c_byte; + int avail_bytes; + char *directoryp = directory_data_cache; + unsigned int start_bytes = bytes; + + while(directory_cache_bytes) { + if(directory_size - directory_bytes < ((SQUASHFS_METADATA_SIZE << 1) + 2)) { + if((directory_table = (char *) realloc(directory_table, directory_size + + ((SQUASHFS_METADATA_SIZE << 1) + 2))) == NULL) { + BAD_ERROR("Out of memory in directory table reallocation!\n"); + } + directory_size += (SQUASHFS_METADATA_SIZE << 1) + 2; + } + avail_bytes = directory_cache_bytes > SQUASHFS_METADATA_SIZE ? SQUASHFS_METADATA_SIZE : directory_cache_bytes; + c_byte = mangle(directory_table + directory_bytes + block_offset, directoryp, avail_bytes, SQUASHFS_METADATA_SIZE, noI, 0); + TRACE("Directory block @ %x, size %d\n", directory_bytes, c_byte); + if(!swap) + memcpy((void *) (directory_table + directory_bytes), (void *) &c_byte, sizeof(unsigned short)); + else + SQUASHFS_SWAP_SHORTS((&c_byte), (directory_table + directory_bytes), 1); + if(check_data) + *((unsigned char *)(directory_table + directory_bytes + block_offset - 1)) = SQUASHFS_MARKER_BYTE; + directory_bytes += SQUASHFS_COMPRESSED_SIZE(c_byte) + block_offset; + total_directory_bytes += avail_bytes + block_offset; + directoryp += avail_bytes; + directory_cache_bytes -= avail_bytes; + } + write_bytes(fd, bytes, directory_bytes, (char *) directory_table); + bytes += directory_bytes; + + return start_bytes; +} + + +unsigned int get_uid(squashfs_uid uid) +{ + int i; + + for(i = 0; (i < uid_count) && uids[i] != uid; i++); + if(i == uid_count) { + if(uid_count == SQUASHFS_UIDS) { + ERROR("Out of uids! - using uid 0 - probably not what's wanted!\n"); + i = 0; + } else + uids[uid_count++] = uid; + } + + return i; +} + + +unsigned int get_guid(squashfs_uid uid, squashfs_uid guid) +{ + int i; + + if(uid == guid) + return SQUASHFS_GUIDS; + + for(i = 0; (i < guid_count) && guids[i] != guid; i++); + if(i == guid_count) { + if(guid_count == SQUASHFS_GUIDS) { + ERROR("Out of gids! - using gid 0 - probably not what's wanted!\n"); + return SQUASHFS_GUIDS; + } else + guids[guid_count++] = guid; + } + + return i; +} + + +squashfs_inode create_inode(char *filename, int type, int byte_size, +squashfs_block start_block, unsigned int offset, unsigned int *block_list, struct fragment *fragment) +{ + squashfs_inode i_no; + struct stat buf; + squashfs_inode_header inode_header; + squashfs_base_inode_header *inode, *base = &inode_header.base; + + if(filename[0] == '\0') { + /* dummy top level directory, if multiple sources specified on command line */ + buf.st_mode = S_IRWXU | S_IRWXG | S_IRWXO; + buf.st_uid = getuid(); + buf.st_gid = getgid(); + buf.st_mtime = time(NULL); + } else if(lstat(filename, &buf) == -1) { + char buffer[8192]; + sprintf(buffer, "Cannot stat dir/file %s, ignoring", filename); + perror(buffer); + return SQUASHFS_INVALID; + } + + base->mode = SQUASHFS_MODE(buf.st_mode); + base->uid = get_uid((squashfs_uid) global_uid == -1 ? buf.st_uid : global_uid); + base->inode_type = type; + base->guid = get_guid((squashfs_uid) global_uid == -1 ? buf.st_uid : global_uid, (squashfs_uid) global_gid == -1 ? buf.st_gid : global_gid); + + if(type == SQUASHFS_FILE_TYPE) { + int i; + squashfs_reg_inode_header *reg = &inode_header.reg, *inodep; + + inodep = (squashfs_reg_inode_header *) inode = get_inode(sizeof(*reg) + + offset * sizeof(unsigned int)); + reg->mtime = buf.st_mtime; + reg->file_size = byte_size; + reg->start_block = start_block; + reg->fragment = fragment->index; + reg->offset = fragment->offset; + if(!swap) { + memcpy((void *) inodep, (void *) reg, sizeof(*reg)); + memcpy((void *) inodep->block_list, block_list, offset * sizeof(unsigned int)); + } else { + SQUASHFS_SWAP_REG_INODE_HEADER(reg, inodep); + SQUASHFS_SWAP_INTS(block_list, inodep->block_list, offset); + } + TRACE("File inode, file_size %d, start_block %x, blocks %d, fragment %d, offset %d, size %d\n", byte_size, + start_block, offset, fragment->index, fragment->offset, fragment->size); + for(i = 0; i < offset; i++) + TRACE("Block %d, size %d\n", i, block_list[i]); + } + else if(type == SQUASHFS_DIR_TYPE) { + squashfs_dir_inode_header *dir = &inode_header.dir; + + inode = get_inode(sizeof(*dir)); + dir->mtime = buf.st_mtime; + dir->file_size = byte_size; + dir->offset = offset; + dir->start_block = start_block; + if(!swap) + memcpy((void *) inode, (void *) dir, sizeof(*dir)); + else + SQUASHFS_SWAP_DIR_INODE_HEADER(dir, inode); + TRACE("Directory inode, file_size %d, start_block %x, offset %x\n", byte_size, + start_block, offset); + } + else if(type == SQUASHFS_CHRDEV_TYPE || type == SQUASHFS_BLKDEV_TYPE) { + squashfs_dev_inode_header *dev = &inode_header.dev; + + inode = get_inode(sizeof(*dev)); + dev->rdev = (unsigned short) ((major(buf.st_rdev) << 8) | + (minor(buf.st_rdev) & 0xff)); + if(!swap) + memcpy((void *) inode, (void *) dev, sizeof(*dev)); + else + SQUASHFS_SWAP_DEV_INODE_HEADER(dev, inode); + TRACE("Device inode, rdev %x\n", dev->rdev); + } + else if(type == SQUASHFS_SYMLINK_TYPE) { + squashfs_symlink_inode_header *symlink = &inode_header.symlink, *inodep; + int byte; + char buff[65536]; + + if((byte = readlink(filename, buff, 65536)) == -1) { + perror("Error in reading symbolic link, skipping..."); + return SQUASHFS_INVALID; + } + + if(byte == 65536) { + ERROR("Symlink is greater than 65536 bytes! skipping..."); + return SQUASHFS_INVALID; + } + + inodep = (squashfs_symlink_inode_header *) inode = get_inode(sizeof(*symlink) + byte); + symlink->symlink_size = byte; + if(!swap) + memcpy((void *) inode, symlink, sizeof(*symlink)); + else + SQUASHFS_SWAP_SYMLINK_INODE_HEADER(symlink, inode); + strncpy(inodep->symlink, buff, byte); + TRACE("Symbolic link inode, symlink_size %d\n", byte); + } + else if(type == SQUASHFS_FIFO_TYPE || type == SQUASHFS_SOCKET_TYPE) { + squashfs_ipc_inode_header *ipc = &inode_header.ipc; + + inode = get_inode(sizeof(*ipc)); + if(!swap) + memcpy((void *) inode, (void *) ipc, sizeof(*ipc)); + else + SQUASHFS_SWAP_IPC_INODE_HEADER(ipc, inode); + TRACE("ipc inode, type %s %d\n", type == SQUASHFS_FIFO_TYPE ? "fifo" : "socket"); + } else + return SQUASHFS_INVALID; + + i_no = MKINODE(inode); + inode_count ++; + + TRACE("Created inode 0x%Lx, type %d, uid %d, guid %d\n", i_no, type, base->uid, base->guid); + + return i_no; +} + + +void init_dir(struct directory *dir) +{ + if((dir->buff = (char *)malloc(SQUASHFS_METADATA_SIZE)) == NULL) { + BAD_ERROR("Out of memory allocating directory buffer\n"); + } + + dir->size = SQUASHFS_METADATA_SIZE; + dir->p = dir->buff; + dir->entry_count = 256; + dir->entry_count_p = NULL; +} + + +void add_dir(squashfs_inode inode, char *name, int type, struct directory *dir) +{ + char *buff; + squashfs_dir_entry idir, *idirp; + unsigned int start_block = inode >> 16; + unsigned int offset = inode & 0xffff; + unsigned int size; + + if((size = strlen(name)) > SQUASHFS_NAME_LEN) { + size = SQUASHFS_NAME_LEN; + ERROR("Filename is greater than %d characters, truncating! ...\n", SQUASHFS_NAME_LEN); + } + + if(dir->p + sizeof(squashfs_dir_entry) + size + 6 >= dir->buff + dir->size) { + if((buff = (char *) realloc(dir->buff, dir->size += SQUASHFS_METADATA_SIZE)) == NULL) { + BAD_ERROR("Out of memory reallocating directory buffer\n"); + } + + dir->p = (dir->p - dir->buff) + buff; + if(dir->entry_count_p) + dir->entry_count_p = (squashfs_dir_header *) (((unsigned char *) dir->entry_count_p) - + dir->buff + buff); + dir->buff = buff; + } + + if(dir->entry_count == 256 || start_block != dir->start_block) { + if(dir->entry_count_p) { + squashfs_dir_header dir_header; + + dir_header.count = dir->entry_count - 1; + dir_header.start_block = dir->start_block; + if(!swap) + memcpy((void *) dir->entry_count_p, (void *) &dir_header, sizeof(dir_header)); + else + SQUASHFS_SWAP_DIR_HEADER((&dir_header), dir->entry_count_p); + } + + dir->entry_count_p = (squashfs_dir_header *) dir->p; + dir->start_block = start_block; + dir->entry_count = 0; + dir->p += sizeof(squashfs_dir_header); + } + + idirp = (squashfs_dir_entry *) dir->p; + idir.offset = offset; + idir.type = type; + idir.size = size - 1; + if(!swap) + memcpy((void *) idirp, (void *) &idir, sizeof(idir)); + else + SQUASHFS_SWAP_DIR_ENTRY((&idir), idirp); + strncpy(idirp->name, name, size); + dir->p += sizeof(squashfs_dir_entry) + size; + dir->entry_count ++; +} + + +squashfs_inode write_dir(char *filename, struct directory *dir) +{ + squashfs_inode inode; + unsigned int dir_size; + int data_space; + unsigned short c_byte; + + while(directory_cache_bytes >= SQUASHFS_METADATA_SIZE) { + if((directory_size - directory_bytes) < ((SQUASHFS_METADATA_SIZE << 1) + 2)) { + if((directory_table = (char *) realloc(directory_table, + directory_size + (SQUASHFS_METADATA_SIZE << 1) + 2)) == NULL) { + goto failed; + } + directory_size += SQUASHFS_METADATA_SIZE << 1; + } + + c_byte = mangle(directory_table + directory_bytes + block_offset, directory_data_cache, + SQUASHFS_METADATA_SIZE, SQUASHFS_METADATA_SIZE, noI, 0); + TRACE("Directory block @ %x, size %d\n", directory_bytes, c_byte); + if(!swap) + memcpy((void *) directory_table + directory_bytes, (void *) &c_byte, sizeof(unsigned short)); + else + SQUASHFS_SWAP_SHORTS((&c_byte), (directory_table + directory_bytes), 1); + if(check_data) + *((unsigned char *)(directory_table + directory_bytes + block_offset - 1)) = SQUASHFS_MARKER_BYTE; + directory_bytes += SQUASHFS_COMPRESSED_SIZE(c_byte) + block_offset; + total_directory_bytes += SQUASHFS_METADATA_SIZE + block_offset; + memcpy(directory_data_cache, directory_data_cache + SQUASHFS_METADATA_SIZE, directory_cache_bytes - SQUASHFS_METADATA_SIZE); + directory_cache_bytes -= SQUASHFS_METADATA_SIZE; + } + + dir_size = dir->p - dir->buff; + data_space = (directory_cache_size - directory_cache_bytes); + if(data_space < dir_size) { + int realloc_size = directory_cache_size == 0 ? ((dir_size + SQUASHFS_METADATA_SIZE) & ~(SQUASHFS_METADATA_SIZE - 1)) : dir_size - data_space; + + if((directory_data_cache = (char *) realloc(directory_data_cache, directory_cache_size + realloc_size)) == NULL) { + goto failed; + } + directory_cache_size += realloc_size; + } + + if(dir_size) { + squashfs_dir_header dir_header; + + dir_header.count = dir->entry_count - 1; + dir_header.start_block = dir->start_block; + if(!swap) + memcpy((void *) dir->entry_count_p, (void *) &dir_header, sizeof(dir_header)); + else + SQUASHFS_SWAP_DIR_HEADER((&dir_header), dir->entry_count_p); + memcpy(directory_data_cache + directory_cache_bytes, dir->buff, dir_size); + } + + inode = create_inode(filename, SQUASHFS_DIR_TYPE, dir_size, directory_bytes, directory_cache_bytes, NULL, NULL); + + directory_cache_bytes += dir_size; + +#ifdef SQUASHFS_TRACE + if(!swap) { + unsigned char *dirp; + int count; + + TRACE("Directory contents of inode 0x%Lx\n", inode); + dirp = dir->buff; + while(dirp < dir->p) { + char buffer[SQUASHFS_NAME_LEN + 1]; + squashfs_dir_entry idir, *idirp; + squashfs_dir_header *dirh = (squashfs_dir_header *) dirp; + count = dirh->count + 1; + dirp += sizeof(squashfs_dir_header); + + TRACE("\tStart block 0x%x, count %d\n", dirh->start_block, count); + + while(count--) { + idirp = (squashfs_dir_entry *) dirp; + memcpy((char *) &idir, (char *) idirp, sizeof(idir)); + strncpy(buffer, idirp->name, idir.size + 1); + buffer[idir.size + 1] = '\0'; + TRACE("\t\tname %s, inode offset 0x%x, type %d\n", buffer, + idir.offset, idir.type); + dirp += sizeof(squashfs_dir_entry) + idir.size + 1; + } + } + } +#endif + dir_count ++; + + return inode; + +failed: + BAD_ERROR("Out of memory in directory table reallocation!\n"); +} + + +char *get_fragment(char *buffer, struct fragment *fragment) +{ + if(fragment->index == fragments || fragment->index == SQUASHFS_INVALID_BLK) + return fragment_data + fragment->offset; + else { + squashfs_fragment_entry *disk_fragment = &fragment_table[fragment->index]; + int size = SQUASHFS_COMPRESSED_SIZE_BLOCK(disk_fragment->size), res; + long bytes = block_size; + + if(SQUASHFS_COMPRESSED_BLOCK(disk_fragment->size)) { + char cbuffer[block_size]; + + read_bytes(fd, disk_fragment->start_block, size, cbuffer); + + if((res = uncompress(buffer, &bytes, (const char *) cbuffer, size)) != Z_OK) { + if(res == Z_MEM_ERROR) + BAD_ERROR("zlib::uncompress failed, not enough memory\n"); + else if(res == Z_BUF_ERROR) + BAD_ERROR("zlib::uncompress failed, not enough room in output buffer\n"); + else + BAD_ERROR("zlib::uncompress failed, unknown error %d\n", res); + } + } else + read_bytes(fd, disk_fragment->start_block, size, buffer); + return buffer + fragment->offset; + } +} + + +void write_fragment() +{ + int compressed_size; + unsigned char buffer[block_size << 1]; + + if(fragment_size == 0) + return; + + if(fragments % FRAG_SIZE == 0) + if((fragment_table = (squashfs_fragment_entry *) realloc(fragment_table, (fragments + FRAG_SIZE) * sizeof(squashfs_fragment_entry))) == NULL) + BAD_ERROR("Out of memory in fragment table\n"); + fragment_table[fragments].size = mangle(buffer, fragment_data, fragment_size, block_size, noF, 1); + fragment_table[fragments].start_block = bytes; + compressed_size = SQUASHFS_COMPRESSED_SIZE_BLOCK(fragment_table[fragments].size); + write_bytes(fd, bytes, compressed_size, buffer); + bytes += compressed_size; + total_uncompressed += fragment_size; + total_compressed += compressed_size; + TRACE("Writing fragment %d, uncompressed size %d, compressed size %d\n",fragments, fragment_size, compressed_size); + fragments ++; + fragment_size = 0; +} + + +static struct fragment empty_fragment = {SQUASHFS_INVALID_BLK, 0, 0}; +struct fragment *get_and_fill_fragment(char *buff, int size) +{ + struct fragment *ffrg; + + if(size == 0) + return &empty_fragment; + + if(fragment_size + size > block_size) + write_fragment(); + + if((ffrg = (struct fragment *) malloc(sizeof(struct fragment))) == NULL) + BAD_ERROR("Out of memory in fragment block allocation!\n"); + + ffrg->index = fragments; + ffrg->offset = fragment_size; + ffrg->size = size; + memcpy(fragment_data + fragment_size, buff, size); + fragment_size += size; + + return ffrg; +} + + +unsigned int write_fragment_table() +{ + unsigned int start_bytes, frag_bytes = SQUASHFS_FRAGMENT_BYTES(fragments), + meta_blocks = SQUASHFS_FRAGMENT_INDEXES(fragments); + char cbuffer[(SQUASHFS_METADATA_SIZE << 2) + 2], buffer[frag_bytes]; + squashfs_fragment_entry *p = (squashfs_fragment_entry *) buffer; + unsigned short c_byte; + int i, compressed_size; + squashfs_fragment_index list[meta_blocks]; + + TRACE("write_fragment_table: fragments %d, frag_bytes %d, meta_blocks %d\n", fragments, frag_bytes, meta_blocks); + for(i = 0; i < fragments; i++, p++) { + TRACE("write_fragment_table: fragment %d, start_block %x, size %d\n", i, fragment_table[i].start_block, fragment_table[i].size); + if(!swap) + memcpy((void *) p, &fragment_table[i], sizeof(squashfs_fragment_entry)); + else + SQUASHFS_SWAP_FRAGMENT_ENTRY(&fragment_table[i], p); + } + + for(i = 0; i < meta_blocks; i++) { + int avail_bytes = i == meta_blocks - 1 ? frag_bytes % SQUASHFS_METADATA_SIZE : SQUASHFS_METADATA_SIZE; + c_byte = mangle(cbuffer + block_offset, buffer + i * SQUASHFS_METADATA_SIZE , avail_bytes, SQUASHFS_METADATA_SIZE, noF, 0); + if(!swap) + memcpy((void *) cbuffer, (void *) &c_byte, sizeof(unsigned short)); + else + SQUASHFS_SWAP_SHORTS((&c_byte), cbuffer, 1); + if(check_data) + *((unsigned char *)(cbuffer + block_offset - 1)) = SQUASHFS_MARKER_BYTE; + list[i] = bytes; + compressed_size = SQUASHFS_COMPRESSED_SIZE(c_byte) + block_offset; + write_bytes(fd, bytes, compressed_size, cbuffer); + bytes += compressed_size; + } + + if(!swap) + write_bytes(fd, bytes, sizeof(list), (char *) list); + else { + squashfs_fragment_index slist[meta_blocks]; + SQUASHFS_SWAP_FRAGMENT_INDEXES(list, slist, meta_blocks); + write_bytes(fd, bytes, sizeof(list), (char *) slist); + } + + start_bytes = bytes; + bytes += sizeof(list); + + return start_bytes; +} + + +unsigned char *read_from_buffer(struct duplicate_buffer_handle *handle, unsigned int avail_bytes) +{ + unsigned char *v = handle->ptr; + handle->ptr += avail_bytes; + return v; +} + + +char read_from_file_buffer[SQUASHFS_FILE_MAX_SIZE]; +unsigned char *read_from_file(struct duplicate_buffer_handle *handle, unsigned int avail_bytes) +{ + read_bytes(fd, handle->start, avail_bytes, read_from_file_buffer); + handle->start += avail_bytes; + return read_from_file_buffer; +} + + +/* + * Compute 16 bit BSD checksum over the data + */ +unsigned short get_checksum(unsigned char *(get_next_file_block)(struct duplicate_buffer_handle *, unsigned int), struct duplicate_buffer_handle *handle, int l) +{ + unsigned short chksum = 0; + unsigned int bytes = 0; + unsigned char *b; + struct duplicate_buffer_handle position = *handle; + + while(l) { + bytes = l > SQUASHFS_FILE_MAX_SIZE ? SQUASHFS_FILE_MAX_SIZE : l; + l -= bytes; + b = get_next_file_block(&position, bytes); + while(bytes--) { + chksum = (chksum & 1) ? (chksum >> 1) | 0x8000 : chksum >> 1; + chksum += *b++; + } + } + + return chksum; +} + + +static unsigned int cached_frag = -1; +void add_file(int start, int file_bytes, unsigned int *block_listp, int blocks, unsigned int fragment, int offset, int bytes) +{ + struct fragment *frg; + struct file_info *dupl_ptr; + char *datap; + struct duplicate_buffer_handle handle; + + if(!duplicate_checking) + return; + + if((frg = (struct fragment *) malloc(sizeof(struct fragment))) == NULL) + BAD_ERROR("Out of memory in fragment block allocation!\n"); + + frg->index = fragment; + frg->offset = offset; + frg->size = bytes; + if(cached_frag == fragment) + datap = fragment_data + offset; + else + datap = get_fragment(fragment_data, frg); + handle.start = start; + if((dupl_ptr = duplicate(read_from_file, &handle, file_bytes, &block_listp, &start, blocks, &frg, datap, bytes)) != NULL) + dupl_ptr->fragment = frg; + cached_frag = fragment; +} + + +struct file_info *duplicate(unsigned char *(get_next_file_block)(struct duplicate_buffer_handle *, unsigned int), struct duplicate_buffer_handle *file_start, int bytes, unsigned int **block_list, int *start, int blocks, struct fragment **fragment, char *frag_data, int frag_bytes) +{ + unsigned short checksum = get_checksum(get_next_file_block, file_start, bytes); + struct duplicate_buffer_handle handle = { frag_data, 0 }; + unsigned short fragment_checksum = get_checksum(read_from_buffer, &handle, frag_bytes); + struct file_info *dupl_ptr = bytes ? dupl[checksum] : frag_dups[fragment_checksum]; + + + for(; dupl_ptr; dupl_ptr = dupl_ptr->next) + if(bytes == dupl_ptr->bytes && frag_bytes == dupl_ptr->fragment->size && fragment_checksum == dupl_ptr->fragment_checksum) { + unsigned char buffer1[SQUASHFS_FILE_MAX_SIZE]; + unsigned int dup_bytes = dupl_ptr->bytes, dup_start = dupl_ptr->start; + struct duplicate_buffer_handle position = *file_start; + unsigned char *buffer; + while(dup_bytes) { + int avail_bytes = dup_bytes > SQUASHFS_FILE_MAX_SIZE ? SQUASHFS_FILE_MAX_SIZE : dup_bytes; + + buffer = get_next_file_block(&position, avail_bytes); + read_bytes(fd, dup_start, avail_bytes, buffer1); + if(memcmp(buffer, buffer1, avail_bytes) != 0) + break; + dup_bytes -= avail_bytes; + dup_start += avail_bytes; + } + if(dup_bytes == 0) { + char frag_buffer1[block_size]; + char *fragment_buffer1 = get_fragment(frag_buffer1, dupl_ptr->fragment); + if(frag_bytes == 0 || memcmp(frag_data, fragment_buffer1, frag_bytes) == 0) { + TRACE("Found duplicate file, start 0x%x, size %d, checksum 0x%x, fragment %d, size %d, offset %d, checksum 0x%x\n", dupl_ptr->start, + dupl_ptr->bytes, dupl_ptr->checksum, dupl_ptr->fragment->index, frag_bytes, dupl_ptr->fragment->offset, fragment_checksum); + *block_list = dupl_ptr->block_list; + *start = dupl_ptr->start; + *fragment = dupl_ptr->fragment; + return 0; + } + } + } + + + if((dupl_ptr = (struct file_info *) malloc(sizeof(struct file_info))) == NULL) { + BAD_ERROR("Out of memory in dup_files allocation!\n"); + } + + dupl_ptr->bytes = bytes; + dupl_ptr->checksum = checksum; + dupl_ptr->start = *start; + dupl_ptr->fragment_checksum = fragment_checksum; + if((dupl_ptr->block_list = (unsigned int *) malloc(blocks * sizeof(unsigned int))) == NULL) { + BAD_ERROR("Out of memory allocating block_list\n"); + } + + memcpy(dupl_ptr->block_list, *block_list, blocks * sizeof(unsigned int)); + dup_files ++; + if(bytes) { + dupl_ptr->next = dupl[checksum]; + dupl[checksum] = dupl_ptr; + } else { + dupl_ptr->next = frag_dups[fragment_checksum]; + frag_dups[fragment_checksum] = dupl_ptr; + } + + return dupl_ptr; +} + + +#define MINALLOCBYTES (1024 * 1024) +squashfs_inode write_file(char *filename, long long size, int *duplicate_file) +{ + unsigned int frag_bytes, file, start, file_bytes = 0, block = 0; + unsigned int c_byte; + long long read_size = (size > SQUASHFS_MAX_FILE_SIZE) ? SQUASHFS_MAX_FILE_SIZE : size; + unsigned int blocks = (read_size + block_size - 1) >> block_log; + unsigned int block_list[blocks], *block_listp = block_list; + char buff[block_size], *c_buffer; + int allocated_blocks = blocks, i, bbytes, whole_file = 1; + struct fragment *fragment; + struct file_info *dupl_ptr; + struct duplicate_buffer_handle handle; + + if(!no_fragments && (read_size < block_size || always_use_fragments)) { + allocated_blocks = blocks = read_size >> block_log; + frag_bytes = read_size % block_size; + } else + frag_bytes = 0; + + if(size > read_size) + ERROR("file %s truncated to %Ld bytes\n", filename, SQUASHFS_MAX_FILE_SIZE); + + total_bytes += read_size; + if((file = open(filename, O_RDONLY)) == -1) { + perror("Error in opening file, skipping..."); + return SQUASHFS_INVALID; + } + + do { + if((c_buffer = (char *) malloc((allocated_blocks + 1) << block_log)) == NULL) { + TRACE("Out of memory allocating write_file buffer, allocated_blocks %d, blocks %d\n", allocated_blocks, blocks); + whole_file = 0; + if((allocated_blocks << (block_log - 1)) < MINALLOCBYTES) + BAD_ERROR("Out of memory allocating write_file buffer, could not allocate %d blocks (%d Kbytes)\n", allocated_blocks, allocated_blocks << (block_log - 10)); + allocated_blocks >>= 1; + } + } while(!c_buffer); + + for(start = bytes; block < blocks; file_bytes += bbytes) { + for(i = 0, bbytes = 0; (i < allocated_blocks) && (block < blocks); i++) { + int available_bytes = read_size - (block * block_size) > block_size ? block_size : read_size - (block * block_size); + if(read(file, buff, available_bytes) == -1) + goto read_err; + c_byte = mangle(c_buffer + bbytes, buff, available_bytes, block_size, noD, 1); + block_list[block ++] = c_byte; + bbytes += SQUASHFS_COMPRESSED_SIZE_BLOCK(c_byte); + } + if(!whole_file) { + write_bytes(fd, bytes, bbytes, c_buffer); + bytes += bbytes; + } + } + + if(frag_bytes != 0) + if(read(file, buff, frag_bytes) == -1) + goto read_err; + + close(file); + if(whole_file) { + handle.ptr = c_buffer; + if(duplicate_checking && (dupl_ptr = duplicate(read_from_buffer, &handle, file_bytes, &block_listp, &start, blocks, &fragment, buff, frag_bytes)) == NULL) { + *duplicate_file = TRUE; + goto wr_inode; + } + write_bytes(fd, bytes, file_bytes, c_buffer); + bytes += file_bytes; + } else { + handle.start = start; + if(duplicate_checking && (dupl_ptr = duplicate(read_from_file, &handle, file_bytes, &block_listp, &start, blocks, &fragment, buff, frag_bytes)) == NULL) { + bytes = start; + if(!block_device) + ftruncate(fd, bytes); + *duplicate_file = TRUE; + goto wr_inode; + } + } + + fragment = get_and_fill_fragment(buff, frag_bytes); + if(duplicate_checking) + dupl_ptr->fragment = fragment; + + *duplicate_file = FALSE; + +wr_inode: + free(c_buffer); + file_count ++; + return create_inode(filename, SQUASHFS_FILE_TYPE, read_size, start, blocks, block_listp, fragment); + +read_err: + perror("Error in reading file, skipping..."); + free(c_buffer); + return SQUASHFS_INVALID; +} + + +struct linuxdir { + DIR *linuxdir; + char pathname[8192]; +}; + + +void *linux_opendir(char *pathname, struct directory *dir) +{ + struct linuxdir *linuxdir; + if((linuxdir = malloc(sizeof(struct linuxdir))) == NULL) + return NULL; + if((linuxdir->linuxdir = opendir(pathname)) == NULL) { + free(linuxdir); + return NULL; + } + strcpy(linuxdir->pathname, pathname); + return (void *) linuxdir; +} + + +int linux_readdir(void *l, char *filename, char *dir_name) +{ + struct dirent *d_name; + struct linuxdir *linuxdir = (struct linuxdir *)l; + + do { + if((d_name = readdir(linuxdir->linuxdir)) == NULL) + return FALSE; + } while(strcmp(d_name->d_name, ".") == 0 || strcmp(d_name->d_name, "..") == 0); + strcat(strcat(strcpy(filename, linuxdir->pathname), "/"), d_name->d_name); + strcpy(dir_name, d_name->d_name); + return TRUE; +} + + +void linux_closedir(void *linuxdir) +{ + closedir(((struct linuxdir *)linuxdir)->linuxdir); + free(linuxdir); +} + + +char b_buffer[8192]; +char *name; +char *basename_r(); + +char *getbase(char *pathname) +{ + char *result; + + if(*pathname != '/') { + result = getenv("PWD"); + strcat(strcat(strcpy(b_buffer, result), "/"), pathname); + } else + strcpy(b_buffer, pathname); + name = b_buffer; + if(((result = basename_r()) == NULL) || (strcmp(result, "..") == 0)) + return NULL; + else + return result; +} + + +char *basename_r() +{ + char *s; + char *p; + int n = 1; + + for(;;) { + s = name; + if(*name == '\0') + return NULL; + if(*name != '/') { + while(*name != '\0' && *name != '/') name++; + n = name - s; + } + while(*name == '/') name++; + if(strncmp(s, ".", n) == 0) + continue; + if((*name == '\0') || (strncmp(s, "..", n) == 0) || ((p = basename_r()) == NULL)) { + s[n] = '\0'; + return s; + } + if(strcmp(p, "..") == 0) + continue; + return p; + } +} + + +char encomp_pathname[8192]; +int encomp_entry = 0; + +void *encomp_opendir(char *pathname, struct directory *dir) +{ + int i; + + for(i = 0; i < old_root_entries; i++) + add_dir(old_root_entry[i].inode, old_root_entry[i].name, old_root_entry[i].type, dir); + + return (void *)source_path; +} + + +int encomp_readdir(void *l, char *filename, char *dir_name) +{ + char *basename; + int n, pass = 1; + + while(encomp_entry < source) { + if((basename = getbase(source_path[encomp_entry])) == NULL) { + ERROR("Bad source directory %s - skipping ...\n", source_path[encomp_entry]); + encomp_entry++; + continue; + } + strcpy(filename, source_path[encomp_entry]); + strcpy(dir_name, basename); + for(;;) { + for(n = 0; n < old_root_entries && strcmp(old_root_entry[n].name, dir_name) != 0; n++); + if(n == old_root_entries) { + add_old_root_entry(dir_name, 0, 0); + encomp_entry++; + return TRUE; + } + ERROR("Source directory entry %s already used! - trying ", dir_name); + sprintf(dir_name, "%s_%d", basename, pass++); + ERROR("%s\n", dir_name); + } + } + return FALSE; +} + + +void encomp_closedir(void *linuxdir) +{ +} + + +void *single_opendir(char *pathname, struct directory *dir) +{ + encomp_opendir(pathname, dir); + return linux_opendir(pathname, dir); +} + + +int single_readdir(void *l, char *filename, char *dir_name) +{ + int i, pass = 1; + char name[SQUASHFS_NAME_LEN + 1]; + + if(linux_readdir(l, filename, dir_name) == FALSE) + return FALSE; + + strcpy(name, dir_name); + for(;;) { + for(i = 0; i < old_root_entries && strcmp(old_root_entry[i].name, dir_name) != 0; i++); + if(i == old_root_entries) { + add_old_root_entry(dir_name, 0, 0); + return TRUE; + } + ERROR("Source directory entry %s already used! - trying ", dir_name); + sprintf(dir_name, "%s_%d", name, pass++); + ERROR("%s\n", dir_name); + } +} + + +squashfs_inode dir_scan(char *pathname, void* (_opendir)(char *, struct directory *), int (_readdir)(void *, char *, char *), + void (_closedir)(void *)) +{ + void *linuxdir; + struct stat buf; + char filename[8192], dir_name[8192]; + int squashfs_type; + squashfs_inode inode = SQUASHFS_INVALID; + struct directory dir; + + init_dir(&dir); + if((linuxdir = _opendir(pathname, &dir)) == NULL) { + ERROR("Could not open %s, skipping...\n", pathname); + goto error; + } + + while(_readdir(linuxdir, filename, dir_name) != FALSE) { + + if(lstat(filename, &buf) == -1) { + char buffer[8192]; + sprintf(buffer, "Cannot stat dir/file %s, ignoring", filename); + perror(buffer); + continue; + } + if(excluded(filename, &buf)) + continue; + + switch(buf.st_mode & S_IFMT) { + case S_IFREG: { + int duplicate_file; + + squashfs_type = SQUASHFS_FILE_TYPE; + if(!sorted) { + inode = write_file(filename, buf.st_size, &duplicate_file); + INFO("file %s, uncompressed size %Ld bytes, %s\n", filename, buf.st_size, duplicate_file ? "DUPLICATE" : ""); + } else + inode = get_sorted_inode(&buf); + break; + } + case S_IFDIR: + squashfs_type = SQUASHFS_DIR_TYPE; + inode = dir_scan(filename, linux_opendir, linux_readdir, linux_closedir); + break; + + case S_IFLNK: + squashfs_type = SQUASHFS_SYMLINK_TYPE; + inode = create_inode(filename, squashfs_type, 0, 0, 0, NULL, NULL); + INFO("symbolic link %s inode 0x%Lx\n", dir_name, inode); + sym_count ++; + break; + + case S_IFCHR: + squashfs_type = SQUASHFS_CHRDEV_TYPE; + inode = create_inode(filename, squashfs_type, 0, 0, 0, NULL, NULL); + INFO("character device %s inode 0x%Lx\n", dir_name, inode); + dev_count ++; + break; + + case S_IFBLK: + squashfs_type = SQUASHFS_BLKDEV_TYPE; + inode = create_inode(filename, squashfs_type, 0, 0, 0, NULL, NULL); + INFO("block device %s inode 0x%Lx\n", dir_name, inode); + dev_count ++; + break; + + case S_IFIFO: + squashfs_type = SQUASHFS_FIFO_TYPE; + inode = create_inode(filename, squashfs_type, 0, 0, 0, NULL, NULL); + INFO("fifo %s inode 0x%Lx\n", dir_name, inode); + fifo_count ++; + break; + + case S_IFSOCK: + squashfs_type = SQUASHFS_SOCKET_TYPE; + inode = create_inode(filename, squashfs_type, 0, 0, 0, NULL, NULL); + INFO("unix domain socket %s inode 0x%Lx\n", dir_name, inode); + sock_count ++; + break; + + default: + ERROR("%s unrecognised file type, mode is %x\n", filename, buf.st_mode); + continue; + } + + if(inode != SQUASHFS_INVALID) + add_dir(inode, dir_name, squashfs_type, &dir); + } + + _closedir(linuxdir); + inode = write_dir(pathname, &dir); + INFO("directory %s inode 0x%Lx\n", pathname, inode); + +error: + free(dir.buff); + + return inode; +} + + +unsigned int slog(unsigned int block) +{ + int i; + + for(i = 9; i <= 16; i++) + if(block == (1 << i)) + return i; + return 0; +} + + +int excluded(char *filename, struct stat *buf) +{ + int i; + + for(i = 0; i < exclude; i++) + if((exclude_paths[i].st_dev == buf->st_dev) && (exclude_paths[i].st_ino == buf->st_ino)) + return TRUE; + return FALSE; +} + + +#define ADD_ENTRY(buf) \ + if(exclude % EXCLUDE_SIZE == 0) {\ + if((exclude_paths = (struct exclude_info *) realloc(exclude_paths, (exclude + EXCLUDE_SIZE) * sizeof(struct exclude_info))) == NULL)\ + BAD_ERROR("Out of memory in exclude dir/file table\n");\ + }\ + exclude_paths[exclude].st_dev = buf.st_dev;\ + exclude_paths[exclude++].st_ino = buf.st_ino; +int add_exclude(char *path) +{ + int i; + char buffer[4096], filename[4096]; + struct stat buf; + + if(path[0] == '/' || strncmp(path, "./", 2) == 0 || strncmp(path, "../", 3) == 0) { + if(lstat(path, &buf) == -1) { + sprintf(buffer, "Cannot stat exclude dir/file %s, ignoring", path); + perror(buffer); + return TRUE; + } + ADD_ENTRY(buf); + return TRUE; + } + + for(i = 0; i < source; i++) { + strcat(strcat(strcpy(filename, source_path[i]), "/"), path); + if(lstat(filename, &buf) == -1) { + if(!(errno == ENOENT || errno == ENOTDIR)) { + sprintf(buffer, "Cannot stat exclude dir/file %s, ignoring", filename); + perror(buffer); + } + continue; + } + ADD_ENTRY(buf); + } + return TRUE; +} + + +void add_old_root_entry(char *name, squashfs_inode inode, int type) +{ + if((old_root_entry = (struct old_root_entry_info *) realloc(old_root_entry, sizeof(struct old_root_entry_info) + * (old_root_entries + 1))) == NULL) + BAD_ERROR("Out of memory in old root directory entries reallocation\n"); + + strcpy(old_root_entry[old_root_entries].name, name); + old_root_entry[old_root_entries].inode = inode; + old_root_entry[old_root_entries++].type = type; +} + + +#define VERSION() \ + printf("mksquashfs version 2.0\n");\ + printf("copyright (C) 2004 Phillip Lougher (plougher@users.sourceforge.net)\n\n"); \ + printf("This program is free software; you can redistribute it and/or\n");\ + printf("modify it under the terms of the GNU General Public License\n");\ + printf("as published by the Free Software Foundation; either version 2,\n");\ + printf("or (at your option) any later version.\n\n");\ + printf("This program is distributed in the hope that it will be useful,\n");\ + printf("but WITHOUT ANY WARRANTY; without even the implied warranty of\n");\ + printf("MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n");\ + printf("GNU General Public License for more details.\n"); +int main(int argc, char *argv[]) +{ + struct stat buf; + int i; + squashfs_super_block sBlk; + char *b, *root_name = NULL; + int be, nopad = FALSE, delete = FALSE, keep_as_directory = FALSE, orig_be; + +#if __BYTE_ORDER == __BIG_ENDIAN + be = TRUE; +#else + be = FALSE; +#endif + + block_log = slog(block_size); + if(argc > 1 && strcmp(argv[1], "-version") == 0) { + VERSION(); + exit(0); + } + for(i = 1; i < argc && argv[i][0] != '-'; i++); + if(i < 3) + goto printOptions; + source_path = argv + 1; + source = i - 2; + for(; i < argc; i++) { + if(strcmp(argv[i], "-b") == 0) { + if((++i == argc) || (block_size = strtol(argv[i], &b, 10), *b !='\0')) { + ERROR("%s: -b missing or invalid block size\n", argv[0]); + exit(1); + } + + if((block_log = slog(block_size)) == 0) { + ERROR("%s: -b block size not power of two or not between 512 and 64K\n", argv[0]); + exit(1); + } + } else if(strcmp(argv[i], "-ef") == 0) { + if(++i == argc) { + ERROR("%s: -ef missing filename\n", argv[0]); + exit(1); + } + } else if(strcmp(argv[i], "-no-duplicates") == 0) + duplicate_checking = FALSE; + + else if(strcmp(argv[i], "-no-fragments") == 0) + no_fragments = TRUE; + + else if(strcmp(argv[i], "-always-use-fragments") == 0) + always_use_fragments = TRUE; + + else if(strcmp(argv[i], "-sort") == 0) { + if(++i == argc) { + ERROR("%s: -sort missing filename\n", argv[0]); + exit(1); + } + } else if(strcmp(argv[i], "-all-root") == 0 || + strcmp(argv[i], "-root-owned") == 0) + global_uid = global_gid = 0; + + else if(strcmp(argv[i], "-force-uid") == 0) { + if(++i == argc) { + ERROR("%s: -force-uid missing uid or user\n", argv[0]); + exit(1); + } + if((global_uid = strtoll(argv[i], &b, 10)), *b =='\0') { + if(global_uid < 0 || global_uid > (((long long) 1 << 32) - 1)) { + ERROR("%s: -force-uid uid out of range\n", argv[0]); + exit(1); + } + } else { + struct passwd *uid = getpwnam(argv[i]); + if(uid) + global_uid = uid->pw_uid; + else { + ERROR("%s: -force-uid invalid uid or unknown user\n", argv[0]); + exit(1); + } + } + } else if(strcmp(argv[i], "-force-gid") == 0) { + if(++i == argc) { + ERROR("%s: -force-gid missing gid or group\n", argv[0]); + exit(1); + } + if((global_gid = strtoll(argv[i], &b, 10)), *b =='\0') { + if(global_gid < 0 || global_gid > (((long long) 1 << 32) - 1)) { + ERROR("%s: -force-gid gid out of range\n", argv[0]); + exit(1); + } + } else { + struct group *gid = getgrnam(argv[i]); + if(gid) + global_gid = gid->gr_gid; + else { + ERROR("%s: -force-gid invalid gid or unknown group\n", argv[0]); + exit(1); + } + } + } else if(strcmp(argv[i], "-noI") == 0 || + strcmp(argv[i], "-noInodeCompression") == 0) + noI = TRUE; + + else if(strcmp(argv[i], "-noD") == 0 || + strcmp(argv[i], "-noDataCompression") == 0) + noD = TRUE; + + else if(strcmp(argv[i], "-noF") == 0 || + strcmp(argv[i], "-noFragmentCompression") == 0) + noF = TRUE; + + else if(strcmp(argv[i], "-nopad") == 0) + nopad = TRUE; + + else if(strcmp(argv[i], "-check_data") == 0) + check_data = TRUE; + + else if(strcmp(argv[i], "-info") == 0) + silent = 0; + + else if(strcmp(argv[i], "-be") == 0) + be = TRUE; + + else if(strcmp(argv[i], "-le") == 0) + be = FALSE; + /* BRCM begin */ + else if(strcmp(argv[i], "-gzip") == 0) + compress_algorithm = GZIP; + + else if(strcmp(argv[i], "-lzma") == 0) + compress_algorithm = LZMA; + /* BRCM end */ + + else if(strcmp(argv[i], "-e") == 0) + break; + + else if(strcmp(argv[i], "-noappend") == 0) + delete = TRUE; + + else if(strcmp(argv[i], "-keep-as-directory") == 0) + keep_as_directory = TRUE; + + else if(strcmp(argv[i], "-root-becomes") == 0) { + if(++i == argc) { + ERROR("%s: -root-becomes: missing name\n", argv[0]); + exit(1); + } + root_name = argv[i]; + } else if(strcmp(argv[i], "-version") == 0) { + VERSION(); + } else { + ERROR("%s: invalid option\n\n", argv[0]); +printOptions: + ERROR("SYNTAX:%s source1 source2 ... dest [options] [-e list of exclude dirs/files]\n", argv[0]); + ERROR("\nOptions are\n"); + ERROR("\t-info\t\t\t\tprint files written to filesystem\n"); + ERROR("\t-sort sort file\t\t\tsort files according to priorities in sort file. One file or dir\n"); + ERROR("\t\t\t\t\twith priority per line. Priority -32768 to 32767, default priority 0\n"); + ERROR("\t-b block size\t\t\tsize of blocks in "); + ERROR("filesystem, default %d\n", SQUASHFS_FILE_SIZE); + ERROR("\t-noappend\t\t\tDo not append to existing filesystem on dest, write a new filesystem\n"); + ERROR("\t\t\t\t\tThis is the default action if dest does not exist, or if no filesystem is on it\n"); + ERROR("\t-keep-as-directory\t\tIf one source directory is specified, create a root directory\n"); + ERROR("\t\t\t\t\tcontaining that directory, rather than the contents of the directory\n"); + ERROR("\t-root-becomes name\t\tWhen appending source files/directories, make the original\n"); + ERROR("\t\t\t\t\troot become a subdirectory in the new root called name, rather\n"); + ERROR("\t\t\t\t\tthan adding the new source items to the original root\n"); + ERROR("\t-noI -noInodeCompression\tdo not compress inode table\n"); + ERROR("\t-noD -noDataCompression\t\tdo not compress data blocks\n"); + ERROR("\t-noF -noFragmentCompression\tdo not compress fragment blocks\n"); + ERROR("\t-no-duplicates\t\t\tdo not perform duplicate checking\n"); + ERROR("\t-no-fragments\t\t\tdo not use fragments\n"); + ERROR("\t-always-use-fragments\t\tuse fragment blocks for files larger than block size\n"); + ERROR("\t-nopad\t\t\t\tdo not pad filesystem to a multiple of 4K\n"); + ERROR("\t-check_data\t\t\tadd checkdata for greater filesystem checks\n"); + ERROR("\t-le\t\t\t\tcreate a little endian filesystem\n"); + ERROR("\t-be\t\t\t\tcreate a big endian filesystem\n"); + /* BRCM begin */ + ERROR("\t-gzip\t\t\t\tuse gzip compression\n"); + ERROR("\t-lzma\t\t\t\tuse lzma compression(default)\n"); + /* BRCM end */ + ERROR("\t-ef exclude file\t\tfile is a list of exclude dirs/files - one per line\n"); + ERROR("\t-all-root\t\t\toverride file uid/gid and make all file uid/gids owned by root\n"); + ERROR("\t-root-owned\t\t\talternative name for -all-root\n"); + ERROR("\t-force-uid uid\t\t\tset all file uids to uid\n"); + ERROR("\t-force-gid gid\t\t\tset all file gids to gid\n"); + ERROR("\t-version\t\t\tprint version, licence and copyright message\n"); + exit(1); + } + } + + if(stat(argv[source + 1], &buf) == -1) { + if(errno == ENOENT) { /* Does not exist */ + if((fd = open(argv[source + 1], O_CREAT | O_TRUNC | O_RDWR, S_IRWXU)) == -1) { + perror("Could not create destination file"); + exit(1); + } + delete = TRUE; + } else { + perror("Could not stat destination file"); + exit(1); + } + + } else { + if(S_ISBLK(buf.st_mode)) { + if((fd = open(argv[source + 1], O_RDWR)) == -1) { + perror("Could not open block device as destination"); + exit(1); + } + block_device = 1; + + } else if(S_ISREG(buf.st_mode)) { + if((fd = open(argv[source + 1], (delete ? O_TRUNC : 0) | O_RDWR)) == -1) { + perror("Could not open regular file for writing as destination"); + exit(1); + } + } + else { + ERROR("Destination not block device or regular file\n"); + exit(1); + } + + if(!delete) { + if(read_super(fd, &sBlk, &orig_be, argv[source + 1]) == 0) { + if(S_ISREG(buf.st_mode)) { /* reopen truncating file */ + close(fd); + if((fd = open(argv[source + 1], O_TRUNC | O_RDWR)) == -1) { + perror("Could not open regular file for writing as destination"); + exit(1); + } + } + delete = TRUE; + } + + } + } + + /* process the exclude files - must be done afer destination file has been possibly created */ + for(i = source + 2; i < argc; i++) + if(strcmp(argv[i], "-ef") == 0) { + FILE *fd; + char filename[16385]; + if((fd = fopen(argv[++i], "r")) == NULL) { + perror("Could not open exclude file..."); + exit(1); + } + while(fscanf(fd, "%16384[^\n]\n", filename) != EOF) + add_exclude(filename); + fclose(fd); + } else if(strcmp(argv[i], "-e") == 0) + break; + else if(strcmp(argv[i], "-b") == 0 || strcmp(argv[i], "-root-becomes") == 0 || strcmp(argv[i], "-sort") == 0) + i++; + + if(i != argc) { + if(++i == argc) { + ERROR("%s: -e missing arguments\n", argv[0]); + exit(1); + } + while(i < argc && add_exclude(argv[i++])); + } + + /* process the sort files - must be done afer the exclude files */ + for(i = source + 2; i < argc; i++) + if(strcmp(argv[i], "-sort") == 0) { + read_sort_file(argv[++i], source, source_path); + sorted ++; + } else if(strcmp(argv[i], "-e") == 0) + break; + else if(strcmp(argv[i], "-b") == 0 || strcmp(argv[i], "-root-becomes") == 0 || strcmp(argv[i], "-ef") == 0) + i++; + + if((fragment_data = (char *) malloc(block_size)) == NULL) + BAD_ERROR("Out of memory allocating fragment_data"); + + if(delete) { + printf("Creating %s filesystem on %s, block size %d.\n", + be ? "big endian" : "little endian", argv[source + 1], block_size); + bytes = sizeof(squashfs_super_block); + } else { + be = orig_be; + block_log = slog(block_size = sBlk.block_size); + noI = SQUASHFS_UNCOMPRESSED_INODES(sBlk.flags); + noD = SQUASHFS_UNCOMPRESSED_DATA(sBlk.flags); + noF = SQUASHFS_UNCOMPRESSED_FRAGMENTS(sBlk.flags); + check_data = SQUASHFS_CHECK_DATA(sBlk.flags); + no_fragments = SQUASHFS_NO_FRAGMENTS(sBlk.flags); + always_use_fragments = SQUASHFS_ALWAYS_FRAGMENTS(sBlk.flags); + duplicate_checking = SQUASHFS_DUPLICATES(sBlk.flags); + + fragments = SQUASHFS_INVALID_BLK; + if((bytes = read_filesystem(root_name, fd, &sBlk, &inode_table, &inode_bytes, &data_cache, + &cache_bytes, &cache_size, &directory_table, &directory_bytes, + &directory_data_cache, &directory_cache_bytes, &directory_cache_size, + &file_count, &sym_count, &dev_count, &dir_count, &fifo_count, &sock_count, (squashfs_uid *) uids, &uid_count, + (squashfs_uid *) guids, &guid_count, + &total_bytes, &total_inode_bytes, &total_directory_bytes, add_old_root_entry, &fragment_table)) == 0) { + ERROR("Failed to read existing filesystem - will not overwrite - ABORTING!\n"); + exit(1); + } + if((fragments = sBlk.fragments)) + fragment_table = (squashfs_fragment_entry *) realloc((char *) fragment_table, ((fragments + FRAG_SIZE - 1) & ~(FRAG_SIZE - 1)) * sizeof(squashfs_fragment_entry)); + + printf("Appending to existing %s squashfs filesystem on %s, block size %d\n", be ? "big endian" : + "little endian", argv[source + 1], block_size); + printf("All -be, -le, -b, -noI, noD, noF, -check_data, no-duplicates, no-fragments and always-use-fragments options ignored\n"); + printf("\nIf appending is not wanted, please re-run with -noappend specified!\n\n"); + + inode_size = inode_bytes; + directory_size = directory_bytes; + + /* save original filesystem state for restoring ... */ + sfragments = fragments; + sbytes = bytes; + sinode_count = sBlk.inodes; + inode_count = file_count + dir_count + sym_count + dev_count; + sdata_cache = (char *)malloc(scache_bytes = cache_size); + sdirectory_data_cache = (char *)malloc(sdirectory_cache_bytes = directory_cache_size); + memcpy(sdata_cache, data_cache, scache_bytes); + memcpy(sdirectory_data_cache, directory_data_cache, sdirectory_cache_bytes); + sinode_bytes = inode_bytes; + sdirectory_bytes = directory_bytes; + suid_count = uid_count; + sguid_count = guid_count; + stotal_bytes = total_bytes; + stotal_inode_bytes = total_inode_bytes; + stotal_directory_bytes = total_directory_bytes; + sfile_count = file_count; + ssym_count = sym_count; + sdev_count = dev_count; + sdir_count = dir_count; + sdup_files = dup_files; + restore = TRUE; + if(setjmp(env)) + goto restore_filesystem; + signal(SIGTERM, sighandler); + signal(SIGINT, sighandler); + write_bytes(fd, SQUASHFS_START, 4, "\0\0\0\0"); + } + +#if __BYTE_ORDER == __BIG_ENDIAN + swap = !be; +#else + swap = be; +#endif + + block_offset = check_data ? 3 : 2; + + if(stat(source_path[0], &buf) == -1) { + perror("Cannot stat source directory"); + EXIT_MKSQUASHFS(); + } + + if(sorted) + sort_files_and_write(source, source_path); + + if(delete && !keep_as_directory && source == 1 && S_ISDIR(buf.st_mode)) + sBlk.root_inode = dir_scan(source_path[0], linux_opendir, linux_readdir, linux_closedir); + else if(!keep_as_directory && source == 1 && S_ISDIR(buf.st_mode)) + sBlk.root_inode = dir_scan(source_path[0], single_opendir, single_readdir, linux_closedir); + else + sBlk.root_inode = dir_scan("", encomp_opendir, encomp_readdir, encomp_closedir); + sBlk.inodes = inode_count; + sBlk.s_magic = SQUASHFS_MAGIC; + sBlk.s_major = SQUASHFS_MAJOR; + sBlk.s_minor = SQUASHFS_MINOR; + sBlk.block_size = block_size; + sBlk.block_log = block_log; + sBlk.flags = SQUASHFS_MKFLAGS(noI, noD, check_data, noF, no_fragments, always_use_fragments, duplicate_checking); + sBlk.mkfs_time = time(NULL); + +restore_filesystem: + write_fragment(); + sBlk.fragments = fragments; + sBlk.inode_table_start = write_inodes(); + sBlk.directory_table_start = write_directories(); + sBlk.fragment_table_start = write_fragment_table(); + + TRACE("sBlk->inode_table_start 0x%x\n", sBlk.inode_table_start); + TRACE("sBlk->directory_table_start 0x%x\n", sBlk.directory_table_start); + TRACE("sBlk->fragment_table_start 0x%x\n", sBlk.fragment_table_start); + + if(sBlk.no_uids = uid_count) { + if(!swap) + write_bytes(fd, bytes, uid_count * sizeof(squashfs_uid), (char *) uids); + else { + squashfs_uid uids_copy[uid_count]; + + SQUASHFS_SWAP_DATA(uids, uids_copy, uid_count, sizeof(squashfs_uid) * 8); + write_bytes(fd, bytes, uid_count * sizeof(squashfs_uid), (char *) uids_copy); + } + sBlk.uid_start = bytes; + bytes += uid_count * sizeof(squashfs_uid); + } else + sBlk.uid_start = 0; + + if(sBlk.no_guids = guid_count) { + if(!swap) + write_bytes(fd, bytes, guid_count * sizeof(squashfs_uid), (char *) guids); + else { + squashfs_uid guids_copy[guid_count]; + + SQUASHFS_SWAP_DATA(guids, guids_copy, guid_count, sizeof(squashfs_uid) * 8); + write_bytes(fd, bytes, guid_count * sizeof(squashfs_uid), (char *) guids_copy); + } + sBlk.guid_start = bytes; + bytes += guid_count * sizeof(squashfs_uid); + } else + sBlk.guid_start = 0; + + sBlk.bytes_used = bytes; + + if(!swap) + write_bytes(fd, SQUASHFS_START, sizeof(squashfs_super_block), (char *) &sBlk); + else { + squashfs_super_block sBlk_copy; + + SQUASHFS_SWAP_SUPER_BLOCK((&sBlk), &sBlk_copy); + write_bytes(fd, SQUASHFS_START, sizeof(squashfs_super_block), (char *) &sBlk_copy); + } + + if(!nopad && (i = bytes & (4096 - 1))) { + unsigned char temp[4096] = {0}; + write_bytes(fd, bytes, 4096 - i, temp); + } + + total_bytes += total_inode_bytes + total_directory_bytes + uid_count + * sizeof(unsigned short) + guid_count * sizeof(unsigned short) + + sizeof(squashfs_super_block); + + printf("\n%s filesystem, data block size %d, %s data, %s metadata, %s fragments\n", be ? + "Big endian" : "Little endian", block_size, noI ? "uncompressed" : "compressed", noD ? + "uncompressed" : "compressed", no_fragments ? "no" : noF ? "uncompressed" : "compressed"); + printf("Filesystem size %.2f Kbytes (%.2f Mbytes)\n", bytes / 1024.0, bytes / (1024.0 * 1024.0)); + printf("\t%.2f%% of uncompressed filesystem size (%.2f Kbytes)\n", + ((float) bytes / total_bytes) * 100.0, total_bytes / 1024.0); + printf("Inode table size %d bytes (%.2f Kbytes)\n", + inode_bytes, inode_bytes / 1024.0); + printf("\t%.2f%% of uncompressed inode table size (%d bytes)\n", + ((float) inode_bytes / total_inode_bytes) * 100.0, total_inode_bytes); + printf("Directory table size %d bytes (%.2f Kbytes)\n", + directory_bytes, directory_bytes / 1024.0); + printf("\t%.2f%% of uncompressed directory table size (%d bytes)\n", + ((float) directory_bytes / total_directory_bytes) * 100.0, total_directory_bytes); + if(duplicate_checking) + printf("Number of duplicate files found %d\n", file_count - dup_files); + else + printf("No duplicate files removed\n"); + printf("Number of inodes %d\n", inode_count); + printf("Number of files %d\n", file_count); + if(!no_fragments) + printf("Number of fragments %d\n", fragments); + printf("Number of symbolic links %d\n", sym_count); + printf("Number of device nodes %d\n", dev_count); + printf("Number of fifo nodes %d\n", fifo_count); + printf("Number of socket nodes %d\n", sock_count); + printf("Number of directories %d\n", dir_count); + printf("Number of uids %d\n", uid_count); + + for(i = 0; i < uid_count; i++) { + struct passwd *user = getpwuid(uids[i]); + printf("\t%s (%d)\n", user == NULL ? "unknown" : user->pw_name, uids[i]); + } + + printf("Number of gids %d\n", guid_count); + + for(i = 0; i < guid_count; i++) { + struct group *group = getgrgid(guids[i]); + printf("\t%s (%d)\n", group == NULL ? "unknown" : group->gr_name, guids[i]); + } + close(fd); + return 0; +} |