From: Sascha Kruse <knopwob@googlemail.com>
Date: Mon, 10 Dec 2012 16:45:14 +0000 (+0100)
Subject: i3-dump-log/main.c: error handling for write(...)
X-Git-Tag: 4.5~94
X-Git-Url: https://git.sur5r.net/?p=i3%2Fi3;a=commitdiff_plain;h=5a567057abbd9b6acb8c440f9d81120e8bd6e5c6

i3-dump-log/main.c: error handling for write(...)
---

diff --git a/i3-dump-log/main.c b/i3-dump-log/main.c
index 4a11d218..852a5cf7 100644
--- a/i3-dump-log/main.c
+++ b/i3-dump-log/main.c
@@ -42,14 +42,19 @@ static int check_for_wrap(void) {
     /* The log wrapped. Print the remaining content and reset walk to the top
      * of the log. */
     wrap_count = header->wrap_count;
-    write(STDOUT_FILENO, walk, ((logbuffer + header->offset_last_wrap) - walk));
+    const int len = (logbuffer + header->offset_last_wrap) - walk;
+    if (write(STDOUT_FILENO, walk, len) != len)
+        err(EXIT_FAILURE, "write()");
     walk = logbuffer + sizeof(i3_shmlog_header);
     return 1;
 }
 
 static void print_till_end(void) {
     check_for_wrap();
-    int n = write(STDOUT_FILENO, walk, ((logbuffer + header->offset_next_write) - walk));
+    const int len = (logbuffer + header->offset_next_write) - walk;
+    const int n = write(STDOUT_FILENO, walk, len);
+    if (len != n)
+        err(EXIT_FAILURE, "write()");
     if (n > 0) {
         walk += n;
     }