Merge pull request #2209 from Airblader/feature-2208

[i3/i3] / libi3 / safewrappers.c

diff --git a/libi3/safewrappers.c b/libi3/safewrappers.c
index ec62aa34f5f98ac6390c089be570aaa57a67fb04..0a233a1271f996272a50751c964e5ecf94b17015 100644 (file)
--- a/libi3/safewrappers.c
+++ b/libi3/safewrappers.c
@@ -2,17 +2,16 @@
  * vim:ts=4:sw=4:expandtab
  *
  * i3 - an improved dynamic tiling window manager
- *
- * © 2009-2011 Michael Stapelberg and contributors
- *
- * See file LICENSE for license information.
+ * © 2009 Michael Stapelberg and contributors (see also: LICENSE)
  *
  */
 #include <string.h>
 #include <stdlib.h>
 #include <stdarg.h>
+#include <unistd.h>
 #include <stdio.h>
 #include <err.h>
+#include <errno.h>
 
 #include "libi3.h"
 
@@ -28,10 +27,10 @@ void *smalloc(size_t size) {
     return result;
 }
 
-void *scalloc(size_t size) {
-    void *result = calloc(size, 1);
+void *scalloc(size_t num, size_t size) {
+    void *result = calloc(num, size);
     if (result == NULL)
-        err(EXIT_FAILURE, "calloc(%zd)", size);
+        err(EXIT_FAILURE, "calloc(%zd, %zd)", num, size);
     return result;
 }
 
@@ -49,6 +48,13 @@ char *sstrdup(const char *str) {
     return result;
 }
 
+char *sstrndup(const char *str, size_t size) {
+    char *result = strndup(str, size);
+    if (result == NULL)
+        err(EXIT_FAILURE, "strndup()");
+    return result;
+}
+
 int sasprintf(char **strp, const char *fmt, ...) {
     va_list args;
     int result;
@@ -59,3 +65,30 @@ int sasprintf(char **strp, const char *fmt, ...) {
     va_end(args);
     return result;
 }
+
+ssize_t writeall(int fd, const void *buf, size_t count) {
+    size_t written = 0;
+    ssize_t n = 0;
+
+    while (written < count) {
+        n = write(fd, buf + written, count - written);
+        if (n == -1) {
+            if (errno == EINTR || errno == EAGAIN)
+                continue;
+            return n;
+        }
+        written += (size_t)n;
+    }
+
+    return written;
+}
+
+ssize_t swrite(int fd, const void *buf, size_t count) {
+    ssize_t n;
+
+    n = writeall(fd, buf, count);
+    if (n == -1)
+        err(EXIT_FAILURE, "Failed to write %d", fd);
+    else
+        return n;
+}