From f4c46b94b867f6a01bf7d0be18f667819338072f Mon Sep 17 00:00:00 2001
From: Nicolas Catania <niko@google.com>
Date: Fri, 22 May 2009 13:41:38 -0700
Subject: Fix for the simultor build breakage.

Added missing include sys/time.h for utimes.

Detects when stat64 uses a timespec for the modif and access times
and work around the missing st_*time_nsec.

Apologies for the whitespace changes, emacs removed them automatically.
---
 libs/utils/backup_helper_file.cpp | 37 ++++++++++++++++++++++++++-----------
 1 file changed, 26 insertions(+), 11 deletions(-)

(limited to 'libs/utils')

diff --git a/libs/utils/backup_helper_file.cpp b/libs/utils/backup_helper_file.cpp
index 8efb3eb..7ec2ce8 100644
--- a/libs/utils/backup_helper_file.cpp
+++ b/libs/utils/backup_helper_file.cpp
@@ -26,6 +26,7 @@
 #include <sys/types.h>
 #include <sys/uio.h>
 #include <sys/stat.h>
+#include <sys/time.h>  // for utimes
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
@@ -607,14 +608,14 @@ backup_helper_test_four()
         0x11, 0x00, 0x00, 0x00,  0x62, 0x79, 0x74, 0x65,
         0x73, 0x5f, 0x6f, 0x66,  0x5f, 0x70, 0x61, 0x64,
         0x64, 0x69, 0x6e, 0x67,  0x33, 0xab, 0xab, 0xab,
-        
+
         // bytes of padding2
         0x44, 0x11, 0x22, 0x33,  0xef, 0xbe, 0xad, 0xde,
         0x44, 0x33, 0x22, 0x11,  0x34, 0x23, 0x12, 0x01,
         0x12, 0x00, 0x00, 0x00,  0x62, 0x79, 0x74, 0x65,
         0x73, 0x5f, 0x6f, 0x66,  0x5f, 0x70, 0x61, 0x64,
         0x64, 0x69, 0x6e, 0x67,  0x5f, 0x32, 0xab, 0xab,
-        
+
         // bytes of padding3
         0x44, 0x11, 0x22, 0x33,  0xef, 0xbe, 0xad, 0xde,
         0x44, 0x33, 0x22, 0x11,  0x34, 0x23, 0x12, 0x01,
@@ -627,7 +628,7 @@ backup_helper_test_four()
     if (err != 0) {
         return err;
     }
-    
+
     // read
     fd = open(filename, O_RDONLY);
     if (fd == -1) {
@@ -665,7 +666,7 @@ backup_helper_test_four()
             matched = false;
         }
     }
-    
+
     return matched ? 0 : 1;
 }
 
@@ -746,7 +747,7 @@ backup_helper_test_data_writer()
     system("rm -r " SCRATCH_DIR);
     mkdir(SCRATCH_DIR, 0777);
     mkdir(SCRATCH_DIR "data", 0777);
-    
+
     fd = creat(filename, 0666);
     if (fd == -1) {
         fprintf(stderr, "error creating: %s\n", strerror(errno));
@@ -863,7 +864,7 @@ backup_helper_test_data_reader()
     system("rm -r " SCRATCH_DIR);
     mkdir(SCRATCH_DIR, 0777);
     mkdir(SCRATCH_DIR "data", 0777);
-    
+
     fd = creat(filename, 0666);
     if (fd == -1) {
         fprintf(stderr, "error creating: %s\n", strerror(errno));
@@ -940,9 +941,23 @@ get_mod_time(const char* filename, struct timeval times[2])
         return errno;
     }
     times[0].tv_sec = st.st_atime;
-    times[0].tv_usec = st.st_atime_nsec / 1000;
     times[1].tv_sec = st.st_mtime;
+
+    // If st_atime is a macro then struct stat64 uses struct timespec
+    // to store the access and modif time values and typically
+    // st_*time_nsec is not defined. In glibc, this is controlled by
+    // __USE_MISC.
+#ifdef __USE_MISC
+#if !defined(st_atime) || defined(st_atime_nsec)
+#error "Check if this __USE_MISC conditional is still needed."
+#endif
+    times[0].tv_usec = st.st_atim.tv_nsec / 1000;
+    times[1].tv_usec = st.st_mtim.tv_nsec / 1000;
+#else
+    times[0].tv_usec = st.st_atime_nsec / 1000;
     times[1].tv_usec = st.st_mtime_nsec / 1000;
+#endif
+
     return 0;
 }
 
@@ -987,7 +1002,7 @@ backup_helper_test_files()
 
     {
         BackupDataWriter dataStream(dataStreamFD);
-    
+
         err = back_up_files(-1, &dataStream, newSnapshotFD, SCRATCH_DIR, files_before, 5);
         if (err != 0) {
             return err;
@@ -1017,7 +1032,7 @@ backup_helper_test_files()
     utimes(SCRATCH_DIR "data/e", e_times);
     write_text_file(SCRATCH_DIR "data/g", "g\ngg\n");
     unlink(SCRATCH_DIR "data/f");
-    
+
     char const* files_after[] = {
         "data/a", // added
         "data/b", // same
@@ -1047,7 +1062,7 @@ backup_helper_test_files()
 
     {
         BackupDataWriter dataStream(dataStreamFD);
-    
+
         err = back_up_files(oldSnapshotFD, &dataStream, newSnapshotFD, SCRATCH_DIR,
                 files_after, 6);
         if (err != 0) {
@@ -1058,7 +1073,7 @@ backup_helper_test_files()
     close(oldSnapshotFD);
     close(dataStreamFD);
     close(newSnapshotFD);
-    
+
     return 0;
 }
 
-- 
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