Handle draft version of getpwuid_r() that accepts only four arguments.

Backpatch to 7.4.X.  Required for Solaris 7 & 8.

Author: bmomjian

config/c-library.m4

@@ -1,5 +1,5 @@
 # Macros that test various C library quirks
-# $PostgreSQL: pgsql/config/c-library.m4,v 1.24 2003/11/29 19:51:17 pgsql Exp $
+# $PostgreSQL: pgsql/config/c-library.m4,v 1.25 2004/03/20 15:39:27 momjian Exp $
 
 
 # PGAC_VAR_INT_TIMEZONE
@@ -73,6 +73,29 @@ AH_VERBATIM(GETTIMEOFDAY_1ARG_,
 ])# PGAC_FUNC_GETTIMEOFDAY_1ARG
 
 
+# PGAC_FUNC_GETPWUID_R_5ARG
+# ---------------------------
+# Check if getpwuid_r() takes a fifth argument (later POSIX standard, not draft version)
+# If so, define GETPWUID_R_5ARG
+AC_DEFUN([PGAC_FUNC_GETPWUID_R_5ARG],
+[AC_CACHE_CHECK(whether getpwuid_r takes a fifth argument,
+pgac_func_getpwuid_r_5arg,
+[AC_TRY_COMPILE([#include <sys/types.h>
+#include <pwd.h>],
+[uid_t uid;
+struct passwd *space;
+char *buf;
+size_t bufsize;
+struct passwd **result;
+getpwuid_r(uid, space, buf, bufsize, result);],
+[pgac_func_getpwuid_r_5arg=yes],
+[pgac_func_getpwuid_r_5arg=no])])
+if test x"$pgac_func_getpwuid_r_5arg" = xyes ; then
+  AC_DEFINE(GETPWUID_R_5ARG,, [Define to 1 if getpwuid_r() takes a 5th argument.])
+fi
+])# PGAC_FUNC_GETPWUID_R_5ARG
+
+
 # PGAC_UNION_SEMUN
 # ----------------
 # Check if `union semun' exists. Define HAVE_UNION_SEMUN if so.

configure

@@ -13247,6 +13247,65 @@ cat >>confdefs.h <<\_ACEOF
 #define GETPWUID_THREADSAFE 1
 _ACEOF
 
+else	echo "$as_me:$LINENO: checking whether getpwuid_r takes a fifth argument" >&5
+echo $ECHO_N "checking whether getpwuid_r takes a fifth argument... $ECHO_C" >&6
+if test "${pgac_func_getpwuid_r_5arg+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+#include "confdefs.h"
+#include <sys/types.h>
+#include <pwd.h>
+#ifdef F77_DUMMY_MAIN
+#  ifdef __cplusplus
+     extern "C"
+#  endif
+   int F77_DUMMY_MAIN() { return 1; }
+#endif
+int
+main ()
+{
+uid_t uid;
+struct passwd *space;
+char *buf;
+size_t bufsize;
+struct passwd **result;
+getpwuid_r(uid, space, buf, bufsize, result);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  pgac_func_getpwuid_r_5arg=yes
+else
+  echo "$as_me: failed program was:" >&5
+cat conftest.$ac_ext >&5
+pgac_func_getpwuid_r_5arg=no
+fi
+rm -f conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $pgac_func_getpwuid_r_5arg" >&5
+echo "${ECHO_T}$pgac_func_getpwuid_r_5arg" >&6
+if test x"$pgac_func_getpwuid_r_5arg" = xyes ; then
+
+cat >>confdefs.h <<\_ACEOF
+#define GETPWUID_R_5ARG
+_ACEOF
+
+fi
+
 fi
 if test "$enable_thread_safety" = yes -a "$GETHOSTBYNAME_THREADSAFE" = yes ; then
 

configure.in

@@ -1,5 +1,5 @@
 dnl Process this file with autoconf to produce a configure script.
-dnl $PostgreSQL: pgsql/configure.in,v 1.319 2004/03/09 22:40:10 momjian Exp $
+dnl $PostgreSQL: pgsql/configure.in,v 1.320 2004/03/20 15:39:27 momjian Exp $
 dnl
 dnl Developers, please strive to achieve this order:
 dnl
@@ -999,6 +999,7 @@ AC_DEFINE(STRERROR_THREADSAFE, 1, [Define if strerror is not thread safe])
 fi
 if test "$enable_thread_safety" = yes -a "$GETPWUID_THREADSAFE" = yes ; then
 AC_DEFINE(GETPWUID_THREADSAFE, 1, [Define if getpwuid is not thread safe])
+else	PGAC_FUNC_GETPWUID_R_5ARG
 fi
 if test "$enable_thread_safety" = yes -a "$GETHOSTBYNAME_THREADSAFE" = yes ; then
 AC_DEFINE(GETHOSTBYNAME_THREADSAFE, 1, [Define if gethostbyname is not thread safe])

src/include/pg_config.h.in

@@ -46,6 +46,9 @@
 /* Define if gethostbyname is not thread safe */
 #undef GETHOSTBYNAME_THREADSAFE
 
+/* Define to 1 if getpwuid_r() takes a 5th argument. */
+#undef GETPWUID_R_5ARG
+
 /* Define if getpwuid is not thread safe */
 #undef GETPWUID_THREADSAFE
 

src/port/thread.c

@@ -7,7 +7,7 @@
  *
  * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
  *
- * $PostgreSQL: pgsql/src/port/thread.c,v 1.17 2004/03/14 14:01:43 momjian Exp $
+ * $PostgreSQL: pgsql/src/port/thread.c,v 1.18 2004/03/20 15:39:27 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -97,13 +97,17 @@ pqGetpwuid(uid_t uid, struct passwd *resultbuf, char *buffer,
 		   size_t buflen, struct passwd **result)
 {
 #if defined(FRONTEND) && defined(ENABLE_THREAD_SAFETY) && defined(HAVE_GETPWUID_R)
+
+#ifdef GETPWUID_R_5ARG
+	/* POSIX version */
+	getpwuid_r(uid, resultbuf, buffer, buflen, result);
+#else
 	/*
 	 * Early POSIX draft of getpwuid_r() returns 'struct passwd *'.
 	 *    getpwuid_r(uid, resultbuf, buffer, buflen)
-	 * Do we need to support it?  bjm 2003-08-14
 	 */
-	/* POSIX version */
-	getpwuid_r(uid, resultbuf, buffer, buflen, result);
+	result = getpwuid_r(uid, resultbuf, buffer, buflen);
+#endif
 
 #else