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Check that one and only one of the [cxt] options is given

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This commit is contained in:
Glenn L McGrath 2002-11-27 07:52:22 +00:00
parent 441e7efc72
commit ec87d37305
1 changed files with 14 additions and 6 deletions
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20
archival/tar.c
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@ -597,6 +597,10 @@ static const llist_t *append_file_list_to_list(const char *filename, const llist
}
#endif
#define CTX_CREATE 1
#define CTX_TEST 2
#define CTX_EXTRACT 4
int tar_main(int argc, char **argv)
{
char (*get_header_ptr)(archive_handle_t *) = get_header_tar;
@ -604,10 +608,7 @@ int tar_main(int argc, char **argv)
int opt;
char *base_dir = NULL;
const char *tar_filename = "-";
#ifdef CONFIG_FEATURE_TAR_CREATE
unsigned char tar_create = FALSE;
#endif
unsigned char ctx_flag = 0;
if (argc < 2) {
show_usage();
@ -630,10 +631,11 @@ int tar_main(int argc, char **argv)
/* One and only one of these is required */
#ifdef CONFIG_FEATURE_TAR_CREATE
case 'c':
tar_create = TRUE;
ctx_flag |= CTX_CREATE;
break;
#endif
case 't':
ctx_flag |= CTX_TEST;
if ((tar_handle->action_header == header_list) ||
(tar_handle->action_header == header_verbose_list)) {
tar_handle->action_header = header_verbose_list;
@ -642,6 +644,7 @@ int tar_main(int argc, char **argv)
}
break;
case 'x':
ctx_flag |= CTX_EXTRACT;
tar_handle->action_data = data_extract_all;
break;
@ -691,6 +694,11 @@ int tar_main(int argc, char **argv)
}
}
/* Check one and only one context option was given */
if ((ctx_flag != CTX_CREATE) && (ctx_flag != CTX_TEST) && (ctx_flag != CTX_EXTRACT)) {
show_usage();
}
/* Check if we are reading from stdin */
if ((argv[optind]) && (*argv[optind] == '-')) {
/* Default is to read from stdin, so just skip to next arg */
@ -710,7 +718,7 @@ int tar_main(int argc, char **argv)
#ifdef CONFIG_FEATURE_TAR_CREATE
/* create an archive */
if (tar_create == TRUE) {
if (ctx_flag == CTX_CREATE) {
int verboseFlag = FALSE;
int gzipFlag = FALSE;