From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Thu, 23 Feb 2012 15:33:56 +0000 (-0500)
Subject: runas: freebsd do not redefine MAP_STACK
X-Git-Tag: v2.0.0-rc3~32
X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=commitdiff_plain;h=0756d5575beab9eabb6d6e3faa321fe7246ad1a7;ds=sidebyside

runas: freebsd do not redefine MAP_STACK

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/src/common/runas.c b/src/common/runas.c
index 88ed77315..7dee28abe 100644
--- a/src/common/runas.c
+++ b/src/common/runas.c
@@ -38,12 +38,11 @@
 
 #define RUNAS_CHILD_STACK_SIZE	10485760
 
-#ifndef __FreeBSD__
-# ifndef MAP_STACK
-#  define MAP_STACK		0
-# endif
-#else	/* FreeBSD MAP_STACK always return -ENOMEM */
-# define MAP_STACK		0
+#ifdef __FreeBSD__
+/* FreeBSD MAP_STACK always return -ENOMEM */
+#define LTTNG_MAP_STACK		0
+#else
+#define LTTNG_MAP_STACK		MAP_STACK
 #endif
 
 #ifndef MAP_GROWSDOWN
@@ -239,7 +238,7 @@ int run_as(int (*cmd)(void *data), void *data, uid_t uid, gid_t gid)
 	run_as_data.retval_pipe = retval_pipe[1];	/* write end */
 	child_stack = mmap(NULL, RUNAS_CHILD_STACK_SIZE,
 		PROT_WRITE | PROT_READ,
-		MAP_PRIVATE | MAP_GROWSDOWN | MAP_ANONYMOUS | MAP_STACK,
+		MAP_PRIVATE | MAP_GROWSDOWN | MAP_ANONYMOUS | LTTNG_MAP_STACK,
 		-1, 0);
 	if (child_stack == MAP_FAILED) {
 		perror("mmap");