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Make unlink old files default behaviour and add a new option -k to

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prevent overwritting existing files
This commit is contained in:
Glenn L McGrath 2003-11-18 20:23:04 +00:00
parent de3ea9f049
commit 3b9fc8fe2a
1 changed files with 23 additions and 19 deletions
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8
archival/tar.c
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@ -595,7 +595,7 @@ static llist_t *append_file_list_to_list(llist_t *list)
#endif #endif
static const char tar_options[]="ctxjT:X:C:f:Opvz"; static const char tar_options[]="ctxjT:X:C:f:Opvzk";
#define CTX_CREATE 1 #define CTX_CREATE 1
#define CTX_TEST 2 #define CTX_TEST 2
@ -609,6 +609,7 @@ static const char tar_options[]="ctxjT:X:C:f:Opvz";
#define TAR_OPT_P 512 #define TAR_OPT_P 512
#define TAR_OPT_VERBOSE 1024 #define TAR_OPT_VERBOSE 1024
#define TAR_OPT_GZIP 2048 #define TAR_OPT_GZIP 2048
#define TAR_OPT_KEEP_OLD 4096
int tar_main(int argc, char **argv) int tar_main(int argc, char **argv)
{ {
@ -633,7 +634,7 @@ int tar_main(int argc, char **argv)
/* Initialise default values */ /* Initialise default values */
tar_handle = init_handle(); tar_handle = init_handle();
tar_handle->flags = ARCHIVE_CREATE_LEADING_DIRS | ARCHIVE_PRESERVE_DATE; tar_handle->flags = ARCHIVE_CREATE_LEADING_DIRS | ARCHIVE_PRESERVE_DATE | ARCHIVE_EXTRACT_UNCONDITIONAL;
bb_opt_complementaly = "c~tx:t~cx:x~ct:X*"; bb_opt_complementaly = "c~tx:t~cx:x~ct:X*";
opt = bb_getopt_ulflags(argc, argv, tar_options, opt = bb_getopt_ulflags(argc, argv, tar_options,
@ -671,6 +672,9 @@ int tar_main(int argc, char **argv)
tar_handle->action_header = header_list; tar_handle->action_header = header_list;
} }
} }
if (opt & TAR_OPT_KEEP_OLD) {
tar_handle->flags &= ~ARCHIVE_EXTRACT_UNCONDITIONAL;
}
if(opt & TAR_OPT_GZIP) { if(opt & TAR_OPT_GZIP) {
#ifdef CONFIG_FEATURE_TAR_GZIP #ifdef CONFIG_FEATURE_TAR_GZIP