From 227ffeb9e097121ac82e65e9dd8b8dd1a73601a8 Mon Sep 17 00:00:00 2001
From: "heikki@hundin.mysql.fi" <>
Date: Wed, 1 Dec 2004 18:02:34 +0200
Subject: [PATCH] configure.in:   Let MySQL check the existence of readdir_r
 with 3 arguments; Solaris seems to have just 2 args   Check the existence of
 readdir_r and localtime_r; even though MySQL does check these too, we need
 our own check for Hot Backup code os0file.c:   Use re-entrant readdir_r where
 available ut0ut.c:   Make a function to use thread-safe localtime_r where
 available; that particular function was not called from anywhere, though

---
 innobase/configure.in |  4 +++-
 innobase/os/os0file.c | 30 +++++++++++++++++++++++++++++-
 innobase/ut/ut0ut.c   |  7 ++++++-
 3 files changed, 38 insertions(+), 3 deletions(-)

diff --git a/innobase/configure.in b/innobase/configure.in
index d83da9fdc5c..baf11272ab9 100644
--- a/innobase/configure.in
+++ b/innobase/configure.in
@@ -41,7 +41,9 @@ AC_CHECK_SIZEOF(long, 4)
 AC_CHECK_SIZEOF(void*, 4)
 AC_CHECK_FUNCS(sched_yield)
 AC_CHECK_FUNCS(fdatasync)
-#AC_CHECK_FUNCS(localtime_r)	# Already checked by MySQL
+AC_CHECK_FUNCS(localtime_r)
+#AC_CHECK_FUNCS(readdir_r) MySQL checks that it has also the right args.
+# Some versions of Unix only take 2 arguments.
 #AC_C_INLINE  Already checked in MySQL
 AC_C_BIGENDIAN
 
diff --git a/innobase/os/os0file.c b/innobase/os/os0file.c
index 5c140e4b798..8b9a0582781 100644
--- a/innobase/os/os0file.c
+++ b/innobase/os/os0file.c
@@ -711,13 +711,41 @@ http://www.mysql.com/doc/en/Windows_symbolic_links.html */
 	char*		full_path;
 	int		ret;
 	struct stat	statinfo;
+#ifdef HAVE_READDIR_R
+	char		dirent_buf[sizeof(struct dirent) + _POSIX_PATH_MAX +
+								100];
+			/* In /mysys/my_lib.c, _POSIX_PATH_MAX + 1 is used as
+			the max file name len; but in most standards, the
+			length is NAME_MAX; we add 100 to be even safer */
+#endif
+
 next_file:
-	ent = readdir(dir);
+
+#ifdef HAVE_READDIR_R
+	ret = readdir_r(dir, (struct dirent*)dirent_buf, &ent);
+
+	if (ret != 0) {
+		fprintf(stderr,
+"InnoDB: cannot read directory %s, error %lu\n", dirname, (ulong)ret);
+
+		return(-1);
+	}
 
 	if (ent == NULL) {
+		/* End of directory */
+		
 		return(1);
 	}
 
+	ut_a(strlen(ent->d_name) < _POSIX_PATH_MAX + 100 - 1);
+#else
+	ent = readdir(dir);
+
+	if (ent == NULL) {
+
+		return(1);
+	}
+#endif
 	ut_a(strlen(ent->d_name) < OS_FILE_MAX_PATH);
 
 	if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0) {
diff --git a/innobase/ut/ut0ut.c b/innobase/ut/ut0ut.c
index b67be77b29e..732380bcb1f 100644
--- a/innobase/ut/ut0ut.c
+++ b/innobase/ut/ut0ut.c
@@ -235,13 +235,18 @@ ut_get_year_month_day(
   	*month = (ulint)cal_tm.wMonth;
   	*day = (ulint)cal_tm.wDay;
 #else
+	struct tm  cal_tm;
   	struct tm* cal_tm_ptr;
   	time_t     tm;
 
   	time(&tm);
 
+#ifdef HAVE_LOCALTIME_R
+  	localtime_r(&tm, &cal_tm);
+  	cal_tm_ptr = &cal_tm;
+#else
   	cal_tm_ptr = localtime(&tm);
-
+#endif
   	*year = (ulint)cal_tm_ptr->tm_year + 1900;
   	*month = (ulint)cal_tm_ptr->tm_mon + 1;
   	*day = (ulint)cal_tm_ptr->tm_mday;