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