1 files changed, 26 insertions, 0 deletions
diff --git a/src/lib/fd-util.h b/src/lib/fd-util.h
new file mode 100644
index 0000000..54bdd63
--- /dev/null
+++ b/src/lib/fd-util.h
@@ -0,0 +1,26 @@
+#ifndef FD_UTIL_H
+#define FD_UTIL_H
+
+/* Change close-on-exec flag of fd. */
+void fd_close_on_exec(int fd, bool set);
+
+/* Verify that fds in given range don't exist. */
+void fd_debug_verify_leaks(int first_fd, int last_fd);
+
+/* Set file descriptor to blocking/nonblocking state */
+void fd_set_nonblock(int fd, bool nonblock);
+
+/* Close fd_in and fd_out, unless they're already -1. They can point to the
+   same fd, in which case they're closed only once. If they point to stdin
+   or stdout, they're replaced with /dev/null. */
+void fd_close_maybe_stdio(int *fd_in, int *fd_out);
+
+/* Close the fd and set it to -1. This assert-crashes if fd == 0, and is a
+   no-op if fd == -1. Normally fd == 0 would happen only if an uninitialized
+   fd is attempted to be closed, which is a bug. */
+void i_close_fd_path(int *fd, const char *path, const char *arg,
+		     const char *func, const char *file, int line);
+#define i_close_fd_path(fd, path) i_close_fd_path((fd), (path), #fd, __func__, __FILE__, __LINE__)
+#define i_close_fd(fd) i_close_fd_path((fd), NULL)
+
+#endif