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authorGlenn L McGrath2003-11-18 20:23:04 +0000
committerGlenn L McGrath2003-11-18 20:23:04 +0000
commit3b9fc8fe2a0fee6f1128f3f73ff408555ff45df8 (patch)
tree073b6ac0a1b25a951e6e1fb5cfbc18888d3c001a /archival/tar.c
parentde3ea9f049167fdd6813f53af23096b6110afe05 (diff)
downloadbusybox-3b9fc8fe2a0fee6f1128f3f73ff408555ff45df8.zip
busybox-3b9fc8fe2a0fee6f1128f3f73ff408555ff45df8.tar.gz
Make unlink old files default behaviour and add a new option -k to
prevent overwritting existing files
Diffstat (limited to 'archival/tar.c')
-rw-r--r--archival/tar.c42
1 files changed, 23 insertions, 19 deletions
diff --git a/archival/tar.c b/archival/tar.c
index bee24d8..7516b57 100644
--- a/archival/tar.c
+++ b/archival/tar.c
@@ -595,7 +595,7 @@ static llist_t *append_file_list_to_list(llist_t *list)
#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_TEST 2
@@ -609,6 +609,7 @@ static const char tar_options[]="ctxjT:X:C:f:Opvz";
#define TAR_OPT_P 512
#define TAR_OPT_VERBOSE 1024
#define TAR_OPT_GZIP 2048
+#define TAR_OPT_KEEP_OLD 4096
int tar_main(int argc, char **argv)
{
@@ -633,7 +634,7 @@ int tar_main(int argc, char **argv)
/* Initialise default values */
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*";
opt = bb_getopt_ulflags(argc, argv, tar_options,
@@ -647,29 +648,32 @@ int tar_main(int argc, char **argv)
bb_show_usage();
ctx_flag = opt & (CTX_CREATE | CTX_TEST | CTX_EXTRACT);
if(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;
- } else {
- tar_handle->action_header = header_list;
- }
+ if ((tar_handle->action_header == header_list) ||
+ (tar_handle->action_header == header_verbose_list)) {
+ tar_handle->action_header = header_verbose_list;
+ } else {
+ tar_handle->action_header = header_list;
+ }
}
if(ctx_flag & CTX_EXTRACT) {
if (tar_handle->action_data != data_extract_to_stdout)
- tar_handle->action_data = data_extract_all;
- }
+ tar_handle->action_data = data_extract_all;
+ }
if(opt & TAR_OPT_2STDOUT) {
/* To stdout */
- tar_handle->action_data = data_extract_to_stdout;
+ tar_handle->action_data = data_extract_to_stdout;
}
if(opt & TAR_OPT_VERBOSE) {
- if ((tar_handle->action_header == header_list) ||
- (tar_handle->action_header == header_verbose_list))
- {
- tar_handle->action_header = header_verbose_list;
- } else {
- tar_handle->action_header = header_list;
- }
+ if ((tar_handle->action_header == header_list) ||
+ (tar_handle->action_header == header_verbose_list))
+ {
+ tar_handle->action_header = header_verbose_list;
+ } else {
+ tar_handle->action_header = header_list;
+ }
+ }
+ if (opt & TAR_OPT_KEEP_OLD) {
+ tar_handle->flags &= ~ARCHIVE_EXTRACT_UNCONDITIONAL;
}
if(opt & TAR_OPT_GZIP) {
@@ -681,7 +685,7 @@ int tar_main(int argc, char **argv)
}
if(opt & TAR_OPT_BZIP2) {
#ifdef CONFIG_FEATURE_TAR_BZIP2
- get_header_ptr = get_header_tar_bz2;
+ get_header_ptr = get_header_tar_bz2;
#else
bb_show_usage();
#endif