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ptsname: fix bug inherited from glibc
From: |
Bruno Haible |
Subject: |
ptsname: fix bug inherited from glibc |
Date: |
Sun, 25 Apr 2010 22:23:12 +0200 |
User-agent: |
KMail/1.9.9 |
This fixes a bug relating to the invocation of ttyname_r. I've reported it
as glibc bug <http://sourceware.org/bugzilla/show_bug.cgi?id=11538>.
2010-04-25 Bruno Haible <address@hidden>
ptsname: Fix misuse of ttyname_r.
* lib/ptsname.c (__ptsname_r): Use __ttyname_r's return value instead
of errno.
--- lib/ptsname.c.orig Sun Apr 25 22:17:33 2010
+++ lib/ptsname.c Sun Apr 25 22:16:53 2010
@@ -63,6 +63,7 @@
__ptsname_r (int fd, char *buf, size_t buflen)
{
int save_errno = errno;
+ int err;
struct stat st;
if (buf == NULL)
@@ -81,8 +82,12 @@
return ERANGE;
}
- if (__ttyname_r (fd, buf, buflen) != 0)
- return errno;
+ err = __ttyname_r (fd, buf, buflen);
+ if (err != 0)
+ {
+ __set_errno (err);
+ return errno;
+ }
buf[sizeof (_PATH_DEV) - 1] = 't';
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