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cpio: improve help text more; fix -p and -F interaction

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2010-01-09 20:23:03 +01:00
parent 93ac7d8468
commit 607f65d171
2 changed files with 17 additions and 15 deletions
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22
archival/cpio.c
View File

@ -298,6 +298,10 @@ int cpio_main(int argc UNUSED_PARAM, char **argv)
;
#endif
archive_handle = init_handle();
/* archive_handle->src_fd = STDIN_FILENO; - done by init_handle */
archive_handle->ah_flags = ARCHIVE_EXTRACT_NEWER;
/* 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 */
@ -307,11 +311,17 @@ int cpio_main(int argc UNUSED_PARAM, char **argv)
/* no parameters */
opt_complementary = "=0";
opt = getopt32(argv, OPTION_STR, &cpio_filename);
if (opt & CPIO_OPT_FILE) { /* -F */
archive_handle->src_fd = xopen(cpio_filename, O_RDONLY);
}
#else
/* _exactly_ one parameter for -p, thus <= 1 param if -p is allowed */
opt_complementary = ENABLE_FEATURE_CPIO_P ? "?1" : "=0";
opt = getopt32(argv, OPTION_STR "oH:" IF_FEATURE_CPIO_P("p"), &cpio_filename, &cpio_fmt);
argv += optind;
if ((opt & (CPIO_OPT_FILE|CPIO_OPT_CREATE)) == CPIO_OPT_FILE) { /* -F without -o */
xmove_fd(xopen(cpio_filename, O_RDONLY), STDIN_FILENO);
}
if (opt & CPIO_OPT_PASSTHROUGH) {
pid_t pid;
struct fd_pair pp;
@ -367,11 +377,6 @@ int cpio_main(int argc UNUSED_PARAM, char **argv)
skip:
#endif
archive_handle = init_handle();
/* archive_handle->src_fd = STDIN_FILENO; - done by init_handle */
archive_handle->seek = seek_by_read;
archive_handle->ah_flags = ARCHIVE_EXTRACT_NEWER;
/* One of either extract or test options must be given */
if ((opt & (CPIO_OPT_TEST | CPIO_OPT_EXTRACT)) == 0) {
bb_show_usage();
@ -398,10 +403,6 @@ int cpio_main(int argc UNUSED_PARAM, char **argv)
archive_handle->action_header = header_list;
}
}
if (opt & CPIO_OPT_FILE) { /* -F */
archive_handle->src_fd = xopen(cpio_filename, O_RDONLY);
archive_handle->seek = seek_by_jump;
}
if (opt & CPIO_OPT_CREATE_LEADING_DIR) {
archive_handle->ah_flags |= ARCHIVE_CREATE_LEADING_DIRS;
}
@ -422,8 +423,9 @@ int cpio_main(int argc UNUSED_PARAM, char **argv)
if (archive_handle->cpio__blocks != (off_t)-1
&& !(opt & CPIO_OPT_QUIET)
)
) {
printf("%"OFF_FMT"u blocks\n", archive_handle->cpio__blocks);
}
return EXIT_SUCCESS;
}

10
include/usage.h
View File

@ -560,8 +560,8 @@
"\n -l,-s Create (sym)links" \
#define cpio_trivial_usage \
"[-ti" IF_FEATURE_CPIO_O("o") "]" IF_FEATURE_CPIO_P(" [-p DIR]") \
" [-dmvu] [-F FILE]" IF_FEATURE_CPIO_O(" [-H newc]")
"[-dmvu] [-F FILE]" IF_FEATURE_CPIO_O(" [-H newc]") \
" [-ti"IF_FEATURE_CPIO_O("o")"]" IF_FEATURE_CPIO_P(" [-p DIR]")
#define cpio_full_usage "\n\n" \
"Extract or list files from a cpio archive" \
IF_FEATURE_CPIO_O(", or" \
@ -573,7 +573,7 @@
"\n -t List" \
"\n -i Extract" \
IF_FEATURE_CPIO_O( \
"\n -o Create" \
"\n -o Create (requires -H newc)" \
) \
IF_FEATURE_CPIO_P( \
"\n -p DIR Copy files to DIR" \
@ -583,9 +583,9 @@
"\n -m Preserve mtime" \
"\n -v Verbose" \
"\n -u Overwrite" \
"\n -F Input file" \
"\n -F FILE Input (-t,-i,-p) or output (-o) file" \
IF_FEATURE_CPIO_O( \
"\n -H Define format" \
"\n -H newc Archive format" \
) \
#define crond_trivial_usage \