From: Roy T. Fielding <fielding@apache.org>
Date: Thu, 26 Aug 1999 18:06:13 +0000 (+0000)
Subject: Add ap_spawnvp for thread safety.
X-Git-Tag: PRE_APR_CHANGES~4
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=53d7c13e320100a442f75693e5877ed942279f5a;p=apache

Add ap_spawnvp for thread safety.

Submitted by:	Ryan Bloom, Manoj Kasichainula


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@83798 13f79535-47bb-0310-9956-ffa450edef68
---

diff --git a/os/unix/os-inline.c b/os/unix/os-inline.c
index 54ff49a639..8018bc7b92 100644
--- a/os/unix/os-inline.c
+++ b/os/unix/os-inline.c
@@ -16,6 +16,7 @@
  * INLINE will _not_ be set so we can use this to test if we are
  * compiling this source file.  
  */
+#include <unistd.h>
 
 #ifndef INLINE
 #define INLINE
@@ -29,3 +30,20 @@ INLINE int ap_os_is_path_absolute(const char *file)
 {
   return file[0] == '/';
 }
+
+INLINE int ap_spawnvp(const char *file, char *const argv[])
+{
+    int pid;
+
+    if ((pid = fork()) == -1) {
+        return pid;
+    } else if (pid == 0) {
+        if (execvp(file, argv) == -1)
+            return -1;
+        else
+            return -1;  /* If we get, we have a real error, but this keeps
+                           us from getting a warning during compile time. */
+    } else 
+        return pid;
+}
+    
diff --git a/os/unix/os.h b/os/unix/os.h
index 6689dfae5c..54124c77fc 100644
--- a/os/unix/os.h
+++ b/os/unix/os.h
@@ -77,6 +77,8 @@
 #define INLINE extern ap_inline
 
 INLINE int ap_os_is_path_absolute(const char *file);
+/* spawn = fork + exec on unix */
+INLINE int ap_spawnvp(const char *file, char *const argv[]);
 
 #include "os-inline.c"
 
@@ -86,6 +88,7 @@ INLINE int ap_os_is_path_absolute(const char *file);
  * as normal
  */
 extern int ap_os_is_path_absolute(const char *file);
+extern int ap_spawnvp(const char *file, char *const argv[]);
 #endif
 
 /* Other ap_os_ routines not used by this platform */