[src/trunk]: src/tests/lib/libc/c063 0-terminate strings returned by readlinkat

[martin <martin%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/b7284794fbb5
branches:  trunk
changeset: 782843:b7284794fbb5
user:      martin <martin%NetBSD.org@localhost>
date:      Thu Nov 22 20:17:48 2012 +0000

description:
0-terminate strings returned by readlinkat

diffstat:

 tests/lib/libc/c063/t_readlinkat.c |  14 ++++++++++----
 1 files changed, 10 insertions(+), 4 deletions(-)

diffs (56 lines):

diff -r a173aeb69708 -r b7284794fbb5 tests/lib/libc/c063/t_readlinkat.c
--- a/tests/lib/libc/c063/t_readlinkat.c        Thu Nov 22 20:15:49 2012 +0000
+++ b/tests/lib/libc/c063/t_readlinkat.c        Thu Nov 22 20:17:48 2012 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: t_readlinkat.c,v 1.1 2012/11/18 17:41:54 manu Exp $ */
+/*     $NetBSD: t_readlinkat.c,v 1.2 2012/11/22 20:17:48 martin Exp $ */
 
 /*-
  * Copyright (c) 2012 The NetBSD Foundation, Inc.
@@ -29,7 +29,7 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: t_readlinkat.c,v 1.1 2012/11/18 17:41:54 manu Exp $");
+__RCSID("$NetBSD: t_readlinkat.c,v 1.2 2012/11/22 20:17:48 martin Exp $");
 
 #include <atf-c.h>
 #include <errno.h>
@@ -58,6 +58,7 @@
 {
        int dfd;
        int fd;
+       ssize_t len;
        char buf[MAXPATHLEN];
 
        ATF_REQUIRE(mkdir(DIR, 0755) == 0);
@@ -66,7 +67,9 @@
        ATF_REQUIRE(symlink(FILE, LINK) == 0);
 
        ATF_REQUIRE((dfd = open(DIR, O_RDONLY, 0)) != -1);
-       ATF_REQUIRE(readlinkat(dfd, BASELINK, buf, sizeof(buf)) != -1);
+       len = readlinkat(dfd, BASELINK, buf, sizeof(buf)-1);
+       ATF_REQUIRE(len != -1);
+       buf[len] = 0;
        ATF_REQUIRE(close(dfd) == 0);
 
        ATF_REQUIRE(strcmp(buf, FILE) == 0);
@@ -90,6 +93,7 @@
 ATF_TC_BODY(readlinkat_fdcwd, tc)
 {
        int fd;
+       ssize_t len;
        char buf[MAXPATHLEN];
 
        ATF_REQUIRE(mkdir(DIR, 0755) == 0);
@@ -97,7 +101,9 @@
        ATF_REQUIRE(close(fd) == 0);
        ATF_REQUIRE(symlink(FILE, LINK) == 0);
 
-       ATF_REQUIRE(readlinkat(AT_FDCWD, LINK, buf, sizeof(buf)) != -1);
+       len = readlinkat(AT_FDCWD, LINK, buf, sizeof(buf)-1);
+       ATF_REQUIRE(len != -1);
+       buf[len] = 0;
 
        ATF_REQUIRE(strcmp(buf, FILE) == 0);
 }