initial commit of version 23fehQlibs-23

1 files changed, 30 insertions, 0 deletions

diff --git a/fd.c b/fd.c
new file mode 100644
index 0000000..776575c
--- /dev/null
+++ b/fd.c
@@ -0,0 +1,30 @@
+#include <fcntl.h>
+#include "fd.h"
+
+/**
+	@file fd.c
+	@autor djb
+	@source qmail
+	@brief file descriptor manipulation
+*/
+
+int close(int __fd);  /* we won't use unistd.h here */
+
+int fd_copy(int to,int from)
+{
+  if (to == from) return 0;
+  if (fcntl(from,F_GETFL,0) == -1) return -1;
+  close(to);
+  if (fcntl(from,F_DUPFD,to) == -1) return -1;
+  return 0;
+}
+
+int fd_move(int to,int from)
+{
+  if (to == from) return 0;
+  if (fd_copy(to,from) == -1) return -1;
+  close(from);
+  return 0;
+}
+
+int fd_coe(int fd) {return fcntl(fd,F_SETFD,1); }