test: Add closefrom() unit test

diff --git a/test/.gitignore b/test/.gitignore
index 1a67d6d0b775ccfd92071fd73e7d7e37ea7068ca..ab051cc9c802d7cf95d0d3e52c17ec5dd590de82 100644 (file)
--- a/test/.gitignore
+++ b/test/.gitignore
@@ -1,3 +1,4 @@
+closefrom
 endian
 fgetln
 funopen

diff --git a/test/Makefile.am b/test/Makefile.am
index 4a5bad241eb29f2f7f73003b5584da86fec2aaeb..0f5ff4e8e315ecedbd35a54ae6e647b82d040bed 100644 (file)
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -12,6 +12,7 @@ LDADD = $(top_builddir)/src/libbsd.la
 check_PROGRAMS = \
        headers \
        overlay \
+       closefrom \
        endian \
        humanize \
        fgetln \

diff --git a/test/closefrom.c b/test/closefrom.c
new file mode 100644 (file)
index 0000000..b5e7e92
--- /dev/null
+++ b/test/closefrom.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright © 2015 Guillem Jover <guillem@hadrons.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
+ * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdio.h>
+
+int
+main()
+{
+       int i;
+       int fd;
+
+       fd = open("/dev/null", O_RDONLY);
+
+       for (i = 4; i < 1024; i *= 2)
+               assert(dup2(fd, i) == i);
+
+       if (fd < 4)
+               close(fd);
+       closefrom(4);
+
+       for (i = 4; i < 1024; i++)
+               assert(fcntl(i, F_GETFL) == -1 && errno == EBADF);
+       assert(fcntl(fd, F_GETFL) == -1 && errno == EBADF);
+
+       return 0;
+}