1 files changed, 31 insertions, 9 deletions

diff --git a/src/lib/libc/string/__strerror.c b/src/lib/libc/string/__strerror.c
index cd604906db..7301a7bc84 100644
--- a/src/lib/libc/string/__strerror.c
+++ b/src/lib/libc/string/__strerror.c
@@ -32,8 +32,7 @@
  */
 
 #if defined(LIBC_SCCS) && !defined(lint)
-/*static char *sccsid = "from: @(#)strerror.c   5.6 (Berkeley) 5/4/91";*/
-static char *rcsid = "$Id: __strerror.c,v 1.1.1.1 1995/10/18 08:42:20 deraadt Exp $";
+static char *rcsid = "$OpenBSD: __strerror.c,v 1.9 2003/03/13 15:47:33 deraadt Exp $";
 #endif /* LIBC_SCCS and not lint */
 
 #ifdef NLS
@@ -46,9 +45,27 @@ static char *rcsid = "$Id: __strerror.c,v 1.1.1.1 1995/10/18 08:42:20 deraadt Ex
 #define sys_errlist     _sys_errlist
 #define sys_nerr        _sys_nerr
 
+#include <errno.h>
+#include <limits.h>
 #include <stdio.h>
 #include <string.h>
 
+static char *
+itoa(num)
+        int num;
+{
+        static char buffer[11];
+        char *p;
+
+        p = buffer + 4;
+        while (num >= 10) {
+                *--p = (num % 10) + '0';
+                num /= 10;
+        }
+        *p = (num % 10) + '0';
+        return p;
+}
+
 /*
  * Since perror() is not allowed to change the contents of strerror()'s
  * static buffer, both functions supply their own buffers to the
@@ -60,32 +77,37 @@ __strerror(num, buf)
         int num;
         char *buf;
 {
-#define UPREFIX "Unknown error: %u"
+#define UPREFIX "Unknown error: "
         register unsigned int errnum;
-
 #ifdef NLS
-        nl_catd catd ;
+        int save_errno;
+        nl_catd catd;
+
         catd = catopen("libc", 0);
 #endif
 
         errnum = num;                           /* convert to unsigned */
         if (errnum < sys_nerr) {
 #ifdef NLS
-                strcpy(buf, catgets(catd, 1, errnum,
-                    (char *)sys_errlist[errnum])); 
+                strlcpy(buf, catgets(catd, 1, errnum,
+                    (char *)sys_errlist[errnum]), NL_TEXTMAX);
 #else
                 return(sys_errlist[errnum]);
 #endif
         } else {
 #ifdef NLS
-                sprintf(buf, catgets(catd, 1, 0xffff, UPREFIX), errnum);
+                strlcpy(buf, catgets(catd, 1, 0xffff, UPREFIX), NL_TEXTMAX);
 #else
-                sprintf(buf, UPREFIX, errnum);
+                strlcpy(buf, UPREFIX, NL_TEXTMAX);
 #endif
+                strlcat(buf, itoa(errnum), NL_TEXTMAX);
+                errno = EINVAL;
         }
 
 #ifdef NLS
+        save_errno = errno;
         catclose(catd);
+        errno = save_errno;
 #endif
 
         return buf;