diff options
| author | Glenn L McGrath <bug1@ihug.co.nz> | 2003-11-20 09:53:31 +0000 |
|---|---|---|
| committer | Glenn L McGrath <bug1@ihug.co.nz> | 2003-11-20 09:53:31 +0000 |
| commit | bebc40b4066384288a5db13884162e1e67789d4b (patch) | |
| tree | ce3afc7fb79bd3f100751f787de927d2309199f3 /archival | |
| parent | ba49651de96fb8891b4627f85b068cb91232f1c8 (diff) | |
Check at least one context is specified
Diffstat (limited to 'archival')
| -rw-r--r-- | archival/tar.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/archival/tar.c b/archival/tar.c index 9ef616b92..c8a2bd385 100644 --- a/archival/tar.c +++ b/archival/tar.c @@ -662,6 +662,9 @@ int tar_main(int argc, char **argv) if(opt & 0x80000000UL) bb_show_usage(); ctx_flag = opt & (CTX_CREATE | CTX_TEST | CTX_EXTRACT); + if (ctx_flag == 0) { + bb_show_usage(); + } if(ctx_flag & CTX_TEST) { if ((tar_handle->action_header == header_list) || (tar_handle->action_header == header_verbose_list)) { |