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cpio: support some long options; document GNU options
This commit is contained in:
Denis Vlasenko
parent
abe49fa54f
commit
2b407b12be
105
archival/cpio.c
105
archival/cpio.c
@ -14,18 +14,6 @@
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#include "libbb.h"
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#include "unarchive.h"
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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),
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CPIO_OPT_FORMAT = (1 << 8),
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};
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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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@ -190,15 +178,102 @@ static int cpio_o(void)
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}
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#endif
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/* GNU cpio (GNU cpio) 2.9 help (abridged):
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Main operation mode:
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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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Operation modifiers 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 to the given NUMBER 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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Operation modifiers 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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Operation modifiers 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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Operation modifiers valid only in --pass-through mode:
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-l, --link Link files instead of copying them, when possible
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Operation modifiers 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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Operation modifiers 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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Operation modifiers 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
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Retain previous file modification times when
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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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archive_handle_t *archive_handle;
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char *cpio_filename;
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#if ENABLE_FEATURE_CPIO_O
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const char *cpio_fmt = "";
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#endif
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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),
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CPIO_OPT_FORMAT = (1 << 8),
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};
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#if ENABLE_GETOPT_LONG && ENABLE_DESKTOP
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applet_long_options =
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"extract\0" No_argument "i"
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"list\0" No_argument "t"
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#if ENABLE_FEATURE_CPIO_O
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"create\0" No_argument "o"
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"format\0" Required_argument "H"
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#endif
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;
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#endif
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/* Initialize */
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archive_handle = init_handle();
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@ -7,8 +7,8 @@
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#include "libbb.h"
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#include "unarchive.h"
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typedef struct hardlinks_s {
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struct hardlinks_s *next;
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typedef struct hardlinks_t {
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struct hardlinks_t *next;
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int inode; /* TODO: must match maj/min too! */
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int mode ;
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int mtime; /* These three are useful only in corner case */
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@ -149,6 +149,7 @@ char FAST_FUNC get_header_cpio(archive_handle_t *archive_handle)
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free(make_me);
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goto next_link;
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}
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cur = cur->next;
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}
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/* Oops... no file with such inode was created... do it now
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* (happens when hardlinked files are empty (zero length)) */
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