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changeset 5896:311a31a595bb

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(getlogin_r): Don't set errno to 0 on return.
author Paul Eggert <eggert@cs.ucla.edu>
date Sat, 28 May 2005 06:11:39 +0000
parents 1640ff3cd5f5
children 535cb354305c
files lib/getlogin_r.c
diffstat 1 files changed, 8 insertions(+), 1 deletions(-) [+]
line wrap: on
line diff
--- a/lib/getlogin_r.c
+++ b/lib/getlogin_r.c
@@ -44,8 +44,15 @@
 
   errno = 0;
   n = getlogin ();
+
+  /* A system function like getlogin_r is never supposed to set errno
+     to zero, so make sure errno is nonzero here.  ENOENT is a
+     reasonable errno value if getlogin returns NULL.  */
+  if (!errno)
+    errno = ENOENT;
+
   if (!n)
-    return errno ? errno : ENOENT;
+    return errno;
   nlen = strlen (n);
   if (size <= nlen)
     return ERANGE;