X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=src%2Fx.c;h=dc5c1dd38e807ee300f9a1d77cc1ef187ef79f7d;hb=e2c8706061d31d48f9516297d118d230354a5949;hp=18c69a47457bf786aa9899999ed419ea96cdb4dd;hpb=ded32923a25488449be27687013845d7fa0e9e5e;p=ttt

diff --git a/src/x.c b/src/x.c
index 18c69a4..dc5c1dd 100644
--- a/src/x.c
+++ b/src/x.c
@@ -151,6 +151,9 @@ xstrdup (const char *s)
 {
     char *ret;
 
+    if (s == NULL)
+	return NULL;
+
     ret = strdup (s);
 
     if (ret == NULL) {
@@ -248,3 +251,33 @@ xselect (int		 n,
 
     return ret;
 }
+
+ssize_t
+xread (int fd, void *buf, size_t count)
+{
+    int ret;
+
+    ret = read (fd, buf, count);
+    if (ret == -1) {
+	fprintf (stderr, "Error: read failed: %s. Aborting.\n",
+		 strerror (errno));
+	exit (1);
+    }
+
+    return ret;
+}
+
+ssize_t
+xwrite (int fd, const void *buf, size_t count)
+{
+    int ret;
+
+    ret = write (fd, buf, count);
+    if (ret == -1) {
+	fprintf (stderr, "Error: write failed: %s. Aborting.\n",
+		 strerror (errno));
+	exit (1);
+    }
+
+    return ret;
+}