+
+/*
+ * Set FD_CLOEXEC on a file descriptor
+ */
+int cloexec(int fd) {
+ int fdflags;
+
+ fdflags = fcntl(fd, F_GETFD);
+ if (fdflags == -1) return -1;
+ return fcntl(fd, F_SETFD, fdflags | FD_CLOEXEC);
+}
+
+FILE *f_open(struct Filename filename, char const *mode, int is_private)
+{
+ if (!is_private) {
+ return fopen(filename.path, mode);
+ } else {
+ int fd;
+ assert(mode[0] == 'w'); /* is_private is meaningless for read */
+ fd = open(filename.path, O_WRONLY | O_CREAT | O_TRUNC,
+ 0700);
+ if (fd < 0)
+ return NULL;
+ return fdopen(fd, mode);
+ }
+}