From 846df9ec1435adad7b753ff03c5186f90cbcd29c Mon Sep 17 00:00:00 2001
From: carns <carns@mcs.anl.gov>
Date: Thu, 21 Feb 2013 19:47:39 +0000
Subject: [PATCH] use fstat() in place of stat() when stat'ing files at open
 time

git-svn-id: https://svn.mcs.anl.gov/repos/darshan/trunk@652 3b7491f3-a168-0410-bf4b-c445ed680a29
---
 darshan-runtime/lib/darshan-posix.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/darshan-runtime/lib/darshan-posix.c b/darshan-runtime/lib/darshan-posix.c
index c568b49..d1c2c0a 100644
--- a/darshan-runtime/lib/darshan-posix.c
+++ b/darshan-runtime/lib/darshan-posix.c
@@ -285,9 +285,9 @@ static inline dev_t get_device(const char* path, struct stat64* statbuf)
 }
 
 #ifdef __CP_STAT_AT_OPEN
-#define CP_STAT_FILE(_f, _p) do { \
+#define CP_STAT_FILE(_f, _p, _r) do { \
     if(!CP_VALUE(_f, CP_FILE_ALIGNMENT)){ \
-        if(stat64(_p, &cp_stat_buf) == 0) { \
+        if(fstat64(_r, &cp_stat_buf) == 0) { \
             CP_SET(_f, CP_DEVICE, get_device(_p, &cp_stat_buf)); \
             CP_SET(_f, CP_FILE_ALIGNMENT, cp_stat_buf.st_blksize); \
             CP_SET(_f, CP_SIZE_AT_OPEN, cp_stat_buf.st_size); \
@@ -295,7 +295,7 @@ static inline dev_t get_device(const char* path, struct stat64* statbuf)
     }\
 }while(0)
 #else
-#define CP_STAT_FILE(_f, _p) do { }while(0)
+#define CP_STAT_FILE(_f, _p, _r) do { }while(0)
 #endif
 
 #define CP_RECORD_OPEN(__ret, __path, __mode, __stream_flag, __tm1, __tm2) do { \
@@ -311,7 +311,7 @@ static inline dev_t get_device(const char* path, struct stat64* statbuf)
     if(exclude) break; \
     file = darshan_file_by_name_setfd(__path, __ret); \
     if(!file) break; \
-    CP_STAT_FILE(file, __path); \
+    CP_STAT_FILE(file, __path, __ret); \
     file->log_file->rank = my_rank; \
     if(__mode) \
         CP_SET(file, CP_MODE, __mode); \
-- 
2.26.2