Changeset 2423 for trunk/src/kash/redir.c

Timestamp:

Oct 18, 2010, 1:43:35 AM (15 years ago)

Author:

bird

Message:

kash: made the SHFILE_IN_USE mode work on unix (because openbsd has a very hackish pthread library).

File:

• trunk/src/kash/redir.c (modified) (1 diff)

trunk/src/kash/redir.c

@@ -383 +383 @@
         return newfd;
 }
+
+
+/*
+ * Copy a file descriptor to be = to.  Returns -1
+ * if the source file descriptor is closed, EMPTY if there are no unused
+ * file descriptors left.
+ */
+
+int
+copyfd2(shinstance *psh, int from, int to)
+{
+        int newfd;
+
+        /** @todo Use dup2()... */
+        newfd = shfile_fcntl(&psh->fdtab, from, F_DUPFD, to);
+        if (newfd < 0) {
+                if (errno == EMFILE)
+                        return EMPTY;
+                else
+                        error(psh, "%d: %s", from, strerror(errno));
+        }
+        else if (newfd != to) {
+                error(psh, "%d: F_DUPFD returned %d, expected %d", from, newfd, to);
+                close(newfd);
+                newfd = -1;
+        }
+
+        return newfd;
+}
+