On Wednesday 18 March 2009 19:16, Mikhail Gusarov wrote:
> Hello,
>
> I can't make busybox ash (1.13.3 and svn trunk) to duplicate the stdin:
>
> ./busybox ash -c "exec 1>&0"
> ash: 0: Bad file descriptor
>
> bash & debian ash seem to handle such construction. Is it a bug, is this
> statement non-standard or maybe something else?
>
> .config file is attached.
Try this patch
--
vda
--- busybox-1.13.3/shell/ash.c Thu Feb 26 12:46:55 2009
+++ busybox-1.13.3/shell/ash.c Thu Mar 19 02:51:08 2009
@@ -13692,15 +13693,20 @@
}
state3:
state = 4;
- if (minusc)
+ if (minusc) {
+ /* evalstring pushes parsefile stack.
+ * Ensure we don't falsely claim that 0 (stdin)
+ * is one of stacked source fds */
+ if (!sflag)
+ g_parsefile->fd = -1;
evalstring(minusc, 0);
+ }
if (sflag || minusc == NULL) {
#if ENABLE_FEATURE_EDITING_SAVEHISTORY
if (iflag) {
const char *hp = lookupvar("HISTFILE");
-
- if (hp != NULL)
+ if (hp)
line_input_state->hist_file = hp;
}
#endif
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