b[un]zip2, g[un]zip: unlink destination if -f is given. Closes 3854

1 files changed, 6 insertions, 0 deletions

diff --git a/archival/bbunzip.c b/archival/bbunzip.c
index 90d39f682..09a4eb9eb 100644
--- a/archival/bbunzip.c
+++ b/archival/bbunzip.c
@@ -73,6 +73,12 @@ int bbunpack(char **argv,
                                 bb_error_msg("%s: unknown suffix - ignored", filename);
                                 goto err;
                         }
+
+                        /* -f: overwrite existing output files */
+                        if (option_mask32 & OPT_FORCE) {
+                                unlink(new_name);
+                        }
+
                         /* O_EXCL: "real" bunzip2 doesn't overwrite files */
                         /* GNU gunzip does not bail out, but goes to next file */
                         if (open_to_or_warn(STDOUT_FILENO, new_name, O_WRONLY | O_CREAT | O_EXCL,