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ar: fix two bugs, one added by prev comment and other we SEGV with no params

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cpio: use optind less

function                                             old     new   delta
ar_main                                              189     184      -5
cpio_main                                            549     533     -16
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-21)             Total: -21 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2010-01-04 14:30:37 +01:00
parent 2ec91aead5
commit 40e5a30b66
2 changed files with 9 additions and 9 deletions
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4
archival/ar.c
View File

@ -49,7 +49,7 @@ int ar_main(int argc UNUSED_PARAM, char **argv)
archive_handle = init_handle();
/* Prepend '-' to the first argument if required */
opt_complementary = "--:p:t:x:-1:p--tx:t--px:x--pt";
opt_complementary = "--:-1:p:t:x:-1:p--tx:t--px:x--pt";
opt = getopt32(argv, "ptxovcr");
argv += optind;
@ -75,7 +75,7 @@ int ar_main(int argc UNUSED_PARAM, char **argv)
bb_error_msg_and_die(msg_unsupported_err, "insertion");
}
archive_handle->src_fd = xopen(argv[optind++], O_RDONLY);
archive_handle->src_fd = xopen(*argv++, O_RDONLY);
while (*argv) {
archive_handle->filter = filter_accept_list;

14
archival/cpio.c
View File

@ -307,16 +307,17 @@ int cpio_main(int argc UNUSED_PARAM, char **argv)
opt = getopt32(argv, OPTION_STR, &cpio_filename);
#else
opt = getopt32(argv, OPTION_STR "oH:" IF_FEATURE_CPIO_P("p"), &cpio_filename, &cpio_fmt);
argv += optind;
if (opt & CPIO_OPT_PASSTHROUGH) {
pid_t pid;
struct fd_pair pp;
if (argv[optind] == NULL)
if (argv[0] == NULL)
bb_show_usage();
if (opt & CPIO_OPT_CREATE_LEADING_DIR)
mkdir(argv[optind], 0777);
mkdir(argv[0], 0777);
/* Crude existence check:
* close(xopen(argv[optind], O_RDONLY | O_DIRECTORY));
* close(xopen(argv[0], O_RDONLY | O_DIRECTORY));
* We can also xopen, fstat, IS_DIR, later fchdir.
* This would check for existence earlier and cleaner.
* As it stands now, if we fail xchdir later,
@ -335,14 +336,14 @@ int cpio_main(int argc UNUSED_PARAM, char **argv)
#else
xpiped_pair(pp);
#endif
pid = fork_or_rexec(argv);
pid = fork_or_rexec(argv - optind);
if (pid == 0) { /* child */
close(pp.rd);
xmove_fd(pp.wr, STDOUT_FILENO);
goto dump;
}
/* parent */
xchdir(argv[optind++]);
xchdir(*argv++);
close(pp.wr);
xmove_fd(pp.rd, STDIN_FILENO);
opt &= ~CPIO_OPT_PASSTHROUGH;
@ -361,7 +362,6 @@ int cpio_main(int argc UNUSED_PARAM, char **argv)
}
skip:
#endif
argv += optind;
archive_handle = init_handle();
archive_handle->src_fd = STDIN_FILENO;
@ -407,7 +407,7 @@ int cpio_main(int argc UNUSED_PARAM, char **argv)
while (*argv) {
archive_handle->filter = filter_accept_list;
llist_add_to(&(archive_handle->accept), *argv);
llist_add_to(&archive_handle->accept, *argv);
argv++;
}