cpio: more compat: -0 and -L options
function old new delta cpio_main 1417 1473 +56
This commit is contained in:
Denis Vlasenko
parent
83518d18a3
commit
05af832097
174
archival/cpio.c
174
archival/cpio.c
@ -14,6 +14,87 @@
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#include "libbb.h"
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#include "unarchive.h"
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/* GNU cpio 2.9 --help (abridged):
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Modes:
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-t, --list List the archive
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-i, --extract Extract files from an archive
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-o, --create Create the archive
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-p, --pass-through Copy-pass mode [was ist das?!]
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Options valid in any mode:
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--block-size=SIZE I/O block size = SIZE * 512 bytes
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-B I/O block size = 5120 bytes
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-c Use the old portable (ASCII) archive format
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-C, --io-size=NUMBER I/O block size in bytes
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-f, --nonmatching Only copy files that do not match given pattern
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-F, --file=FILE Use FILE instead of standard input or output
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-H, --format=FORMAT Use given archive FORMAT
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-M, --message=STRING Print STRING when the end of a volume of the
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backup media is reached
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-n, --numeric-uid-gid If -v, show numeric UID and GID
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--quiet Do not print the number of blocks copied
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--rsh-command=COMMAND Use remote COMMAND instead of rsh
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-v, --verbose Verbosely list the files processed
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-V, --dot Print a "." for each file processed
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-W, --warning=FLAG Control warning display: 'none','truncate','all';
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multiple options accumulate
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Options valid only in --extract mode:
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-b, --swap Swap both halfwords of words and bytes of
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halfwords in the data (equivalent to -sS)
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-r, --rename Interactively rename files
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-s, --swap-bytes Swap the bytes of each halfword in the files
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-S, --swap-halfwords Swap the halfwords of each word (4 bytes)
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--to-stdout Extract files to standard output
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-E, --pattern-file=FILE Read additional patterns specifying filenames to
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extract or list from FILE
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--only-verify-crc Verify CRC's, don't actually extract the files
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Options valid only in --create mode:
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-A, --append Append to an existing archive
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-O FILE File to use instead of standard output
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Options valid only in --pass-through mode:
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-l, --link Link files instead of copying them, when possible
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Options valid in --extract and --create modes:
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--absolute-filenames Do not strip file system prefix components from
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the file names
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--no-absolute-filenames Create all files relative to the current dir
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Options valid in --create and --pass-through modes:
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-0, --null A list of filenames is terminated by a NUL
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-a, --reset-access-time Reset the access times of files after reading them
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-I FILE File to use instead of standard input
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-L, --dereference Dereference symbolic links (copy the files
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that they point to instead of copying the links)
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-R, --owner=[USER][:.][GROUP] Set owner of created files
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Options valid in --extract and --pass-through modes:
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-d, --make-directories Create leading directories where needed
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-m, --preserve-modification-time Retain mtime when creating files
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--no-preserve-owner Do not change the ownership of the files
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--sparse Write files with blocks of zeros as sparse files
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-u, --unconditional Replace all files unconditionally
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*/
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enum {
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CPIO_OPT_EXTRACT = (1 << 0),
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CPIO_OPT_TEST = (1 << 1),
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CPIO_OPT_NUL_TERMINATED = (1 << 2),
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CPIO_OPT_UNCONDITIONAL = (1 << 3),
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CPIO_OPT_VERBOSE = (1 << 4),
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CPIO_OPT_CREATE_LEADING_DIR = (1 << 5),
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CPIO_OPT_PRESERVE_MTIME = (1 << 6),
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CPIO_OPT_DEREF = (1 << 7),
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CPIO_OPT_FILE = (1 << 8),
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CPIO_OPT_CREATE = (1 << 9) * ENABLE_FEATURE_CPIO_O,
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CPIO_OPT_FORMAT = (1 << 10) * ENABLE_FEATURE_CPIO_O,
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CPIO_OPT_PASSTHROUGH = (1 << 11) * ENABLE_FEATURE_CPIO_P,
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};
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#define OPTION_STR "it0uvdmLF:"
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#if ENABLE_FEATURE_CPIO_O
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static off_t cpio_pad4(off_t size)
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{
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@ -49,7 +130,9 @@ static int cpio_o(void)
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char *line;
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struct stat st;
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line = xmalloc_fgetline(stdin);
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line = (option_mask32 & CPIO_OPT_NUL_TERMINATED)
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? bb_get_chunk_from_file(stdin, NULL)
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: xmalloc_fgetline(stdin);
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if (line) {
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/* Strip leading "./[./]..." from the filename */
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@ -62,7 +145,10 @@ static int cpio_o(void)
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free(line);
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continue;
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}
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if (lstat(name, &st)) {
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if ((option_mask32 & CPIO_OPT_DEREF)
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? stat(name, &st)
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: lstat(name, &st)
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) {
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abort_cpio_o:
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bb_simple_perror_msg_and_die(name);
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}
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@ -179,71 +265,6 @@ static int cpio_o(void)
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}
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#endif
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/* GNU cpio 2.9 --help (abridged):
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Modes:
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-i, --extract Extract files from an archive
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-o, --create Create the archive
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-p, --pass-through Copy-pass mode [was ist das?!]
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-t, --list List the archive
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Options valid in any mode:
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--block-size=SIZE I/O block size = SIZE * 512 bytes
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-B I/O block size = 5120 bytes
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-c Use the old portable (ASCII) archive format
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-C, --io-size=NUMBER I/O block size in bytes
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-f, --nonmatching Only copy files that do not match given pattern
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-F, --file=FILE Use FILE instead of standard input or output
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-H, --format=FORMAT Use given archive FORMAT
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-M, --message=STRING Print STRING when the end of a volume of the
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backup media is reached
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-n, --numeric-uid-gid If -v, show numeric UID and GID
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--quiet Do not print the number of blocks copied
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--rsh-command=COMMAND Use remote COMMAND instead of rsh
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-v, --verbose Verbosely list the files processed
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-V, --dot Print a "." for each file processed
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-W, --warning=FLAG Control warning display: 'none','truncate','all';
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multiple options accumulate
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Options valid only in --extract mode:
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-b, --swap Swap both halfwords of words and bytes of
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halfwords in the data (equivalent to -sS)
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-r, --rename Interactively rename files
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-s, --swap-bytes Swap the bytes of each halfword in the files
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-S, --swap-halfwords Swap the halfwords of each word (4 bytes)
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--to-stdout Extract files to standard output
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-E, --pattern-file=FILE Read additional patterns specifying filenames to
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extract or list from FILE
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--only-verify-crc Verify CRC's, don't actually extract the files
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Options valid only in --create mode:
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-A, --append Append to an existing archive
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-O FILE File to use instead of standard output
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Options valid only in --pass-through mode:
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-l, --link Link files instead of copying them, when possible
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Options valid in --extract and --create modes:
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--absolute-filenames Do not strip file system prefix components from
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the file names
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--no-absolute-filenames Create all files relative to the current dir
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Options valid in --create and --pass-through modes:
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-0, --null A list of filenames is terminated by a NUL
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-a, --reset-access-time Reset the access times of files after reading them
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-I FILE File to use instead of standard input
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-L, --dereference Dereference symbolic links (copy the files
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that they point to instead of copying the links)
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-R, --owner=[USER][:.][GROUP] Set owner of created files
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Options valid in --extract and --pass-through modes:
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-d, --make-directories Create leading directories where needed
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-m, --preserve-modification-time Retain mtime when creating files
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--no-preserve-owner Do not change the ownership of the files
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--sparse Write files with blocks of zeros as sparse files
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-u, --unconditional Replace all files unconditionally
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*/
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int cpio_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int cpio_main(int argc UNUSED_PARAM, char **argv)
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{
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@ -251,18 +272,6 @@ int cpio_main(int argc UNUSED_PARAM, char **argv)
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char *cpio_filename;
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USE_FEATURE_CPIO_O(const char *cpio_fmt = "";)
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unsigned opt;
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enum {
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CPIO_OPT_EXTRACT = (1 << 0),
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CPIO_OPT_TEST = (1 << 1),
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CPIO_OPT_UNCONDITIONAL = (1 << 2),
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CPIO_OPT_VERBOSE = (1 << 3),
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CPIO_OPT_FILE = (1 << 4),
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CPIO_OPT_CREATE_LEADING_DIR = (1 << 5),
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CPIO_OPT_PRESERVE_MTIME = (1 << 6),
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CPIO_OPT_CREATE = (1 << 7) * ENABLE_FEATURE_CPIO_O,
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CPIO_OPT_FORMAT = (1 << 8) * ENABLE_FEATURE_CPIO_O,
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CPIO_OPT_PASSTHROUGH = (1 << 9) * ENABLE_FEATURE_CPIO_P,
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};
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#if ENABLE_GETOPT_LONG
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applet_long_options =
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@ -281,11 +290,12 @@ int cpio_main(int argc UNUSED_PARAM, char **argv)
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/* As of now we do not enforce this: */
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/* -i,-t,-o,-p are mutually exclusive */
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/* -u,-d,-m make sense only with -i or -p */
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/* -F makes sense only with -o */
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/* -L makes sense only with -o or -p */
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#if !ENABLE_FEATURE_CPIO_O
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opt = getopt32(argv, "ituvF:dm", &cpio_filename);
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opt = getopt32(argv, OPTION_STR, &cpio_filename);
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#else
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opt = getopt32(argv, "ituvF:dmoH:" USE_FEATURE_CPIO_P("p"), &cpio_filename, &cpio_fmt);
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opt = getopt32(argv, OPTION_STR "oH:" USE_FEATURE_CPIO_P("p"), &cpio_filename, &cpio_fmt);
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if (opt & CPIO_OPT_PASSTHROUGH) {
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pid_t pid;
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struct fd_pair pp;
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