fix dependencies for external nodes

[sliver-openvswitch.git] / lib / process.c

diff --git a/lib/process.c b/lib/process.c
index 55092f5..795a136 100644 (file)
--- a/lib/process.c
+++ b/lib/process.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013 Nicira, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,7 +16,6 @@
 
 #include <config.h>
 #include "process.h"
-#include <assert.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <signal.h>
@@ -82,9 +81,7 @@ process_init(void)
     inited = true;
 
     /* Create notification pipe. */
-    xpipe(fds);
-    set_nonblocking(fds[0]);
-    set_nonblocking(fds[1]);
+    xpipe_nonblocking(fds);
 
     /* Set up child termination signal handler. */
     memset(&sa, 0, sizeof sa);
@@ -161,7 +158,7 @@ process_register(const char *name, pid_t pid)
     struct process *p;
     const char *slash;
 
-    assert(sigchld_is_blocked());
+    ovs_assert(sigchld_is_blocked());
 
     p = xzalloc(sizeof *p);
     p->pid = pid;
@@ -310,7 +307,7 @@ process_exited(struct process *p)
 int
 process_status(const struct process *p)
 {
-    assert(p->exited);
+    ovs_assert(p->exited);
     return p->status;
 }
 
@@ -403,20 +400,28 @@ process_search_path(const char *name)
 /* process_run_capture() and supporting functions. */
 
 struct stream {
+    size_t max_size;
     struct ds log;
     int fds[2];
 };
 
 static int
-stream_open(struct stream *s)
+stream_open(struct stream *s, size_t max_size)
 {
+    int error;
+
+    s->max_size = max_size;
     ds_init(&s->log);
     if (pipe(s->fds)) {
         VLOG_WARN("failed to create pipe: %s", strerror(errno));
         return errno;
     }
-    set_nonblocking(s->fds[0]);
-    return 0;
+    error = set_nonblocking(s->fds[0]);
+    if (error) {
+        close(s->fds[0]);
+        close(s->fds[1]);
+    }
+    return error;
 }
 
 static void
@@ -443,9 +448,9 @@ stream_read(struct stream *s)
                 }
                 break;
             }
-        } else if (s->log.length > PROCESS_MAX_CAPTURE) {
-            VLOG_WARN("subprocess output overflowed %d-byte buffer",
-                      PROCESS_MAX_CAPTURE);
+        } else if (s->log.length > s->max_size) {
+            VLOG_WARN("subprocess output overflowed %zu-byte buffer",
+                      s->max_size);
             break;
         }
     }
@@ -480,7 +485,7 @@ stream_close(struct stream *s)
  * '*status'.
  *
  * If 'stdout_log' is nonnull, then the subprocess's output to stdout (up to a
- * limit of PROCESS_MAX_CAPTURE bytes) is captured in a memory buffer, which
+ * limit of 'log_max' bytes) is captured in a memory buffer, which
  * when this function returns 0 is stored as a null-terminated string in
  * '*stdout_log'.  The caller is responsible for freeing '*stdout_log' (by
  * passing it to free()).  When this function returns an error, '*stdout_log'
@@ -490,7 +495,7 @@ stream_close(struct stream *s)
  * that it captures the subprocess's output to stderr. */
 int
 process_run_capture(char **argv, char **stdout_log, char **stderr_log,
-                    int *status)
+                    size_t max_log, int *status)
 {
     struct stream s_stdout, s_stderr;
     sigset_t oldsigs;
@@ -510,12 +515,12 @@ process_run_capture(char **argv, char **stdout_log, char **stderr_log,
         return error;
     }
 
-    error = stream_open(&s_stdout);
+    error = stream_open(&s_stdout, max_log);
     if (error) {
         return error;
     }
 
-    error = stream_open(&s_stderr);
+    error = stream_open(&s_stderr, max_log);
     if (error) {
         stream_close(&s_stdout);
         return error;