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authorGlenn L McGrath2002-09-25 02:47:48 +0000
committerGlenn L McGrath2002-09-25 02:47:48 +0000
commit7ca04f328e22fcbee4659d73f9a72dfdf1dd6a23 (patch)
treef38c7ef4317eea28c6abdb0adbbb286fe041711e /archival/libunarchive/get_header_tar_gz.c
parentecfa290cfd4953598e6d91989bd66ac16e135f84 (diff)
downloadbusybox-7ca04f328e22fcbee4659d73f9a72dfdf1dd6a23.zip
busybox-7ca04f328e22fcbee4659d73f9a72dfdf1dd6a23.tar.gz
New common unarchive code.
Diffstat (limited to 'archival/libunarchive/get_header_tar_gz.c')
-rw-r--r--archival/libunarchive/get_header_tar_gz.c73
1 files changed, 73 insertions, 0 deletions
diff --git a/archival/libunarchive/get_header_tar_gz.c b/archival/libunarchive/get_header_tar_gz.c
new file mode 100644
index 0000000..c06beac
--- /dev/null
+++ b/archival/libunarchive/get_header_tar_gz.c
@@ -0,0 +1,73 @@
+/*
+ * 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 Library 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 <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include "libbb.h"
+#include "unarchive.h"
+
+extern char get_header_tar_gz(archive_handle_t *archive_handle)
+{
+ int fd_pipe[2];
+ int pid;
+
+ check_header_gzip(archive_handle->src_fd);
+
+ if (pipe(fd_pipe) != 0) {
+ error_msg_and_die("Can't create pipe\n");
+ }
+
+ pid = fork();
+ if (pid == -1) {
+ error_msg_and_die("Fork failed\n");
+ }
+
+ if (pid == 0) {
+ /* child process */
+ close(fd_pipe[0]); /* We don't wan't to read from the pipe */
+ inflate(archive_handle->src_fd, fd_pipe[1]);
+ check_trailer_gzip(archive_handle->src_fd);
+ close(fd_pipe[1]); /* Send EOF */
+ exit(0);
+ /* notreached */
+ }
+ /* parent process */
+ close(fd_pipe[1]); /* Don't want to write down the pipe */
+ close(archive_handle->src_fd);
+
+ archive_handle->src_fd = fd_pipe[0];
+
+ while (get_header_tar(archive_handle) == EXIT_SUCCESS);
+
+ if (kill(pid, SIGTERM) == -1) {
+ error_msg_and_die("Couldnt kill gunzip process");
+ }
+
+ /* I dont think this is needed */
+#if 0
+ if (waitpid(pid, NULL, 0) == -1) {
+ error_msg("Couldnt wait ?");
+ }
+#endif
+
+ /* Can only do one file at a time */
+ return(EXIT_FAILURE);
+}
+