1 /* global.c - global variables and initial values for cpio. 2 Copyright (C) 1990, 1991, 1992 Free Software Foundation, Inc. 3 4 This program is free software; you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 2, or (at your option) 7 any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program; if not, write to the Free Software 16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ 17 18 #include <sys/types.h> 19 #include "cpiohdr.h" 20 #include "dstring.h" 21 #include "system.h" 22 #include "extern.h" 23 24 /* If TRUE, reset access times after reading files (-a). */ 25 int reset_time_flag = FALSE; 26 27 /* Block size value, initially 512. -B sets to 5120. */ 28 int io_block_size = 512; 29 30 /* The header format to recognize and produce. */ 31 enum archive_format archive_format = arf_unknown; 32 33 /* If TRUE, create directories as needed. (-d with -i or -p) */ 34 int create_dir_flag = FALSE; 35 36 /* If TRUE, interactively rename files. (-r) */ 37 int rename_flag = FALSE; 38 39 /* If TRUE, print a table of contents of input. (-t) */ 40 int table_flag = FALSE; 41 42 /* If TRUE, copy unconditionally (older replaces newer). (-u) */ 43 int unconditional_flag = FALSE; 44 45 /* If TRUE, list the files processed, or ls -l style output with -t. (-v) */ 46 int verbose_flag = FALSE; 47 48 /* If TRUE, print a . for each file processed. (-V) */ 49 int dot_flag = FALSE; 50 51 /* If TRUE, link files whenever possible. Used with -p option. (-l) */ 52 int link_flag = FALSE; 53 54 /* If TRUE, retain previous file modification time. (-m) */ 55 int retain_time_flag = FALSE; 56 57 /* Set TRUE if crc_flag is TRUE and we are doing a cpio -i. Used 58 by copy_files so it knows whether to compute the crc. */ 59 int crc_i_flag = FALSE; 60 61 /* If TRUE, append to end of archive. (-A) */ 62 int append_flag = FALSE; 63 64 /* If TRUE, swap bytes of each file during cpio -i. */ 65 int swap_bytes_flag = FALSE; 66 67 /* If TRUE, swap halfwords of each file during cpio -i. */ 68 int swap_halfwords_flag = FALSE; 69 70 /* If TRUE, we are swapping halfwords on the current file. */ 71 int swapping_halfwords = FALSE; 72 73 /* If TRUE, we are swapping bytes on the current file. */ 74 int swapping_bytes = FALSE; 75 76 /* If TRUE, set ownership of all files to UID `set_owner'. */ 77 int set_owner_flag = FALSE; 78 uid_t set_owner; 79 80 /* If TRUE, set group ownership of all files to GID `set_group'. */ 81 int set_group_flag = FALSE; 82 gid_t set_group; 83 84 /* If TRUE, do not chown the files. */ 85 int no_chown_flag = FALSE; 86 87 #ifdef DEBUG_CPIO 88 /* If TRUE, print debugging information. */ 89 int debug_flag = FALSE; 90 #endif 91 92 /* File position of last header read. Only used during -A to determine 93 where the old TRAILER!!! record started. */ 94 int last_header_start = 0; 95 96 /* With -i; if TRUE, copy only files that match any of the given patterns; 97 if FALSE, copy only files that do not match any of the patterns. (-f) */ 98 int copy_matching_files = TRUE; 99 100 /* With -itv; if TRUE, list numeric uid and gid instead of translating them 101 into names. */ 102 int numeric_uid = FALSE; 103 104 /* Name of file containing additional patterns (-E). */ 105 char *pattern_file_name = NULL; 106 107 /* Message to print when end of medium is reached (-M). */ 108 char *new_media_message = NULL; 109 110 /* With -M with %d, message to print when end of medium is reached. */ 111 char *new_media_message_with_number = NULL; 112 char *new_media_message_after_number = NULL; 113 114 /* File descriptor containing the archive. */ 115 int archive_des; 116 117 /* Name of file containing the archive, if known; NULL if stdin/out. */ 118 char *archive_name = NULL; 119 120 /* CRC checksum. */ 121 unsigned long crc; 122 123 /* Input and output buffers. */ 124 char *input_buffer, *output_buffer; 125 126 /* Current locations in `input_buffer' and `output_buffer'. */ 127 char *in_buff, *out_buff; 128 129 /* Current number of bytes stored at `input_buff' and `output_buff'. */ 130 long input_size, output_size; 131 132 /* Total number of bytes read and written for all files. */ 133 long input_bytes, output_bytes; 134 135 /* 512 bytes of 0; used for various padding operations. */ 136 char zeros_512[512]; 137 138 /* Saving of argument values for later reference. */ 139 char *directory_name = NULL; 140 char **save_patterns; 141 int num_patterns; 142 143 /* Character that terminates file names read from stdin. */ 144 char name_end = '\n'; 145 146 /* TRUE if input (cpio -i) or output (cpio -o) is a device node. */ 147 char input_is_special = FALSE; 148 char output_is_special = FALSE; 149 150 /* TRUE if lseek works on the input. */ 151 char input_is_seekable = FALSE; 152 153 /* TRUE if lseek works on the output. */ 154 char output_is_seekable = FALSE; 155 156 /* If nonzero, don't consider file names that contain a `:' to be 157 on remote hosts; all files are local. */ 158 int f_force_local = 0; 159 160 /* The name this program was run with. */ 161 char *program_name; 162 163 /* A pointer to either lstat or stat, depending on whether 164 dereferencing of symlinks is done for input files. */ 165 int (*xstat) (); 166 167 /* Which copy operation to perform. (-i, -o, -p) */ 168 void (*copy_function) () = 0; 169