added gunzip_dopen

2 files changed, 11 insertions, 5 deletions

diff --git a/isys/gzlib/binding.c b/isys/gzlib/binding.c
index ca93153a0..16dd568ad 100644
--- a/isys/gzlib/binding.c
+++ b/isys/gzlib/binding.c
@@ -9,16 +9,12 @@ struct gzFile_s {
     int fd;
 };
 
-gzFile gunzip_open(const char * file) {
-    int fd;
+gzFile gunzip_dopen(int fd) {
     int p[2];
     void * oldsig;
     pid_t child;
     gzFile str;
 
-    fd = open(file, O_RDONLY);
-    if (fd < 0) return NULL;
-
     pipe(p);
 
     oldsig = signal(SIGCLD, SIG_IGN);
@@ -46,6 +42,15 @@ gzFile gunzip_open(const char * file) {
     return str;
 }
 
+gzFile gunzip_open(const char * file) {
+    int fd;
+
+    fd = open(file, O_RDONLY);
+    if (fd < 0) return NULL;
+
+    return gunzip_dopen(fd); 
+}
+
 int gunzip_read(gzFile str, void * buf, int bytes) {
     int pos = 0;
     int i;
diff --git a/isys/gzlib/gzlib.h b/isys/gzlib/gzlib.h
index 5de4117d8..d44a37ea1 100644
--- a/isys/gzlib/gzlib.h
+++ b/isys/gzlib/gzlib.h
@@ -4,6 +4,7 @@
 typedef struct gzFile_s * gzFile;
 
 gzFile gunzip_open(const char * file);
+gzFile gunzip_dopen(int fd);
 int gunzip_read(gzFile str, void * buf, int bytes);
 int gunzip_close(gzFile str);