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-rw-r--r--libbb/gz_open.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/libbb/gz_open.c b/libbb/gz_open.c
new file mode 100644
index 0000000..dbaf3bb
--- /dev/null
+++ b/libbb/gz_open.c
@@ -0,0 +1,58 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Utility routines.
+ *
+ * Copyright (C) many different people. If you wrote this, please
+ * acknowledge your work.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include "libbb.h"
+
+extern FILE *gz_open(FILE *compressed_file, int *pid)
+{
+ int unzip_pipe[2];
+
+ if (pipe(unzip_pipe)!=0) {
+ error_msg("pipe error");
+ return(NULL);
+ }
+ if ((*pid = fork()) == -1) {
+ error_msg("fork failed");
+ return(NULL);
+ }
+ if (*pid==0) {
+ /* child process */
+ close(unzip_pipe[0]);
+ unzip(compressed_file, fdopen(unzip_pipe[1], "w"));
+ fflush(NULL);
+ fclose(compressed_file);
+ close(unzip_pipe[1]);
+ exit(EXIT_SUCCESS);
+ }
+ close(unzip_pipe[1]);
+ if (unzip_pipe[0] == -1) {
+ error_msg("gzip stream init failed");
+ }
+ return(fdopen(unzip_pipe[0], "r"));
+}