FreeCalypso > hg > freecalypso-tools
view ffstools/tiffs-rd/xtr.c @ 778:3ba64341137b
simagent: bare Tx works with extra delays
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 13 Mar 2021 19:31:53 +0000 |
parents | e7502631a0f9 |
children |
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/* * This C module implements the xtr command. */ #include <sys/types.h> #include <sys/file.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include <unistd.h> #include "types.h" #include "struct.h" #include "globals.h" #include "pathname.h" static void dump_head_chunk(fd, headino) { struct inode_info *inf = inode_info[headino]; struct chunkinfo chi; if (size_head_chunk(inf, &chi)) write(fd, chi.start, chi.len); } static void dump_extra_chunk(inf, opaque) struct inode_info *inf; u_long opaque; { int fd = (int)opaque; struct chunkinfo chi; size_extra_chunk(inf, &chi); write(fd, chi.start, chi.len); } extract_file(relpath, headino) char *relpath; { int fd; fd = open(relpath, O_WRONLY|O_CREAT|O_TRUNC, 0666); if (fd < 0) { perror(relpath); exit(1); } dump_head_chunk(fd, headino); iterate_seg_file(headino, dump_extra_chunk, (u_long)fd, 0, 0); close(fd); } void xtr_tree_callback(pathname, ino, depth) char *pathname; { struct inode_info *inf = inode_info[ino]; switch (inf->type) { case 0xE1: case 0xF1: /* skip /.journal; those who need it can cat it */ if (strcmp(pathname, "/.journal")) extract_file(pathname + 1, ino); return; case 0xE2: case 0xF2: if (mkdir(pathname + 1, 0777) < 0) { perror(pathname + 1); exit(1); } return; case 0xE3: case 0xF3: fprintf(stderr, "symlink at %s ignored: symlink extraction not implemented yet\n", pathname); return; default: fprintf(stderr, "BUG: bad inode byte %02X reached xtr_tree_callback()\n", inf->type); exit(1); } } cmd_xtr(argc, argv) char **argv; { if (argc != 2) { fprintf(stderr, "usage: xtr dest-dir\n"); exit(1); } read_ffs_image(); find_inode_block(); alloc_inode_table(); find_root_inode(); if (chdir(argv[1]) < 0) { perror(argv[1]); exit(1); } traverse_visible_tree(xtr_tree_callback); exit(0); }