contrib/cpio/global.c

   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 non-NULL, the name of a file that will be read to
  40    rename all of the files in the archive.  --rename-batch-file.  */
  41 char *rename_batch_file = NULL;
  42
  43 /* If TRUE, print a table of contents of input. (-t) */
  44 int table_flag = FALSE;
  45
  46 /* If TRUE, copy unconditionally (older replaces newer). (-u) */
  47 int unconditional_flag = FALSE;
  48
  49 /* If TRUE, list the files processed, or ls -l style output with -t. (-v) */
  50 int verbose_flag = FALSE;
  51
  52 /* If TRUE, print a . for each file processed. (-V) */
  53 int dot_flag = FALSE;
  54
  55 /* If TRUE, link files whenever possible.  Used with -p option. (-l) */
  56 int link_flag = FALSE;
  57
  58 /* If TRUE, retain previous file modification time. (-m) */
  59 int retain_time_flag = FALSE;
  60
  61 /* Set TRUE if crc_flag is TRUE and we are doing a cpio -i.  Used
  62    by copy_files so it knows whether to compute the crc.  */
  63 int crc_i_flag = FALSE;
  64
  65 /* If TRUE, append to end of archive. (-A) */
  66 int append_flag = FALSE;
  67
  68 /* If TRUE, swap bytes of each file during cpio -i.  */
  69 int swap_bytes_flag = FALSE;
  70
  71 /* If TRUE, swap halfwords of each file during cpio -i.  */
  72 int swap_halfwords_flag = FALSE;
  73
  74 /* If TRUE, we are swapping halfwords on the current file.  */
  75 int swapping_halfwords = FALSE;
  76
  77 /* If TRUE, we are swapping bytes on the current file.  */
  78 int swapping_bytes = FALSE;
  79
  80 /* If TRUE, set ownership of all files to UID `set_owner'.  */
  81 int set_owner_flag = FALSE;
  82 uid_t set_owner;
  83
  84 /* If TRUE, set group ownership of all files to GID `set_group'.  */
  85 int set_group_flag = FALSE;
  86 gid_t set_group;
  87
  88 /* If TRUE, do not chown the files.  */
  89 int no_chown_flag = FALSE;
  90
  91 /* If TRUE, try to write sparse ("holey") files.  */
  92 int sparse_flag = FALSE;
  93
  94 /* If TRUE, don't report number of blocks copied.  */
  95 int quiet_flag = FALSE;
  96
  97 /* If TRUE, only read the archive and verify the files' CRC's, don't
  98    actually extract the files. */
  99 int only_verify_crc_flag = FALSE;
 100
 101 /* If TRUE, don't use any absolute paths, prefix them by `./'.  */
 102 int no_abs_paths_flag = FALSE;
 103
 104 #ifdef DEBUG_CPIO
 105 /* If TRUE, print debugging information.  */
 106 int debug_flag = FALSE;
 107 #endif
 108
 109 /* File position of last header read.  Only used during -A to determine
 110    where the old TRAILER!!! record started.  */
 111 int last_header_start = 0;
 112
 113 /* With -i; if TRUE, copy only files that match any of the given patterns;
 114    if FALSE, copy only files that do not match any of the patterns. (-f) */
 115 int copy_matching_files = TRUE;
 116
 117 /* With -itv; if TRUE, list numeric uid and gid instead of translating them
 118    into names.  */
 119 int numeric_uid = FALSE;
 120
 121 /* Name of file containing additional patterns (-E).  */
 122 char *pattern_file_name = NULL;
 123
 124 /* Message to print when end of medium is reached (-M).  */
 125 char *new_media_message = NULL;
 126
 127 /* With -M with %d, message to print when end of medium is reached.  */
 128 char *new_media_message_with_number = NULL;
 129 char *new_media_message_after_number = NULL;
 130
 131 /* File descriptor containing the archive.  */
 132 int archive_des;
 133
 134 /* Name of file containing the archive, if known; NULL if stdin/out.  */
 135 char *archive_name = NULL;
 136
 137 /* CRC checksum.  */
 138 unsigned long crc;
 139
 140 /* Input and output buffers.  */
 141 char *input_buffer, *output_buffer;
 142
 143 /* The size of the input buffer.  */
 144 long input_buffer_size;
 145
 146 /* Current locations in `input_buffer' and `output_buffer'.  */
 147 char *in_buff, *out_buff;
 148
 149 /* Current number of bytes stored at `input_buff' and `output_buff'.  */
 150 long input_size, output_size;
 151
 152 /* Total number of bytes read and written for all files.
 153    Now that many tape drives hold more than 4Gb we need more than 32
 154    bits to hold input_bytes and output_bytes.  But it's not worth
 155    the trouble of adding special multi-precision arithmetic if the
 156    compiler doesn't support 64 bit ints since input_bytes and
 157    output_bytes are only used to print the number of blocks copied.  */
 158 #ifdef __GNUC__
 159 long long input_bytes, output_bytes;
 160 #else
 161 long input_bytes, output_bytes;
 162 #endif
 163
 164 /* 512 bytes of 0; used for various padding operations.  */
 165 char zeros_512[512];
 166
 167 /* Saving of argument values for later reference.  */
 168 char *directory_name = NULL;
 169 char **save_patterns;
 170 int num_patterns;
 171
 172 /* Character that terminates file names read from stdin.  */
 173 char name_end = '\n';
 174
 175 /* TRUE if input (cpio -i) or output (cpio -o) is a device node.  */
 176 char input_is_special = FALSE;
 177 char output_is_special = FALSE;
 178
 179 /* TRUE if lseek works on the input.  */
 180 char input_is_seekable = FALSE;
 181
 182 /* TRUE if lseek works on the output.  */
 183 char output_is_seekable = FALSE;
 184
 185 /* If nonzero, don't consider file names that contain a `:' to be
 186    on remote hosts; all files are local.  */
 187 int f_force_local = 0;
 188
 189 /* The name this program was run with.  */
 190 char *program_name;
 191
 192 /* A pointer to either lstat or stat, depending on whether
 193    dereferencing of symlinks is done for input files.  */
 194 int (*xstat) ();
 195
 196 /* Which copy operation to perform. (-i, -o, -p) */
 197 void (*copy_function) () = 0;