Check return code of write

diff --git a/src/lib/debug.c b/src/lib/debug.c
index 49a0230..3d1b1a4 100644 (file)
--- a/src/lib/debug.c
+++ b/src/lib/debug.c
@@ -150,7 +150,9 @@ static int fr_debugger_attached(void)
 
                if (_PTRACE(PTRACE_ATTACH, ppid) == 0) {
                        /* If we attached then we're not running under a debugger */
-                       write(from_child[1], &ret, sizeof(ret));
+                       if (write(from_child[1], &ret, sizeof(ret)) < 0) {
+                               fprintf(stderr, "Writing ptrace status to parent failed: %s", fr_syserror(errno));
+                       }
 
                        /* Wait for the parent to stop and continue it */
                        waitpid(ppid, NULL, 0);
@@ -163,7 +165,9 @@ static int fr_debugger_attached(void)
 
                ret = 1;
                /* Something is already attached */
-               write(from_child[1], &ret, 1);
+               if (write(from_child[1], &ret, 1) < 0) {
+                       fprintf(stderr, "Writing ptrace status to parent failed: %s", fr_syserror(errno));
+               }
 
                exit(0);
        /* Parent */