* cygwin.din: Export setreuid32, setreuid, setregid32, setregid.

* syscalls.cc (setreuid32): New function.
	(setreuid): Ditto.
	(setregid32): Ditto.
	(setregid): Ditto.
	* include/cygwin/version.h: Bump API minor number.

winsup/cygwin/ChangeLog

@@ -1,3 +1,13 @@
+2003-01-24  Pierre Humblet <pierre.humblet@ieee.org>
+	    Jason Tishler  <jason@tishler.net>
+
+	* cygwin.din: Export setreuid32, setreuid, setregid32, setregid.
+	* syscalls.cc (setreuid32): New function.
+	(setreuid): Ditto.
+	(setregid32): Ditto.
+	(setregid): Ditto.
+	* include/cygwin/version.h: Bump API minor number.
+
 2003-01-23  Christopher Faylor  <cgf@redhat.com>
 
 	* pwdrp.h (pwdgrp::refresh): Lock entire test prior to reading.

winsup/cygwin/cygwin.din

@@ -715,6 +715,12 @@ setlocale
 _setlocale = setlocale
 setpgid
 _setpgid = setpgid
+setregid
+_setregid = setregid
+setregid32
+setreuid
+_setreuid = setreuid
+setreuid32
 setrlimit
 _setrlimit = setrlimit
 setsid

winsup/cygwin/include/cygwin/version.h

@@ -170,12 +170,13 @@ details. */
        70: Export asprintf, _asprintf_r, vasprintf, _vasprintf_r
        71: Export strerror_r
        72: Export nanosleep
+       73: Export setreuid32, setreuid, setregid32, setregid
      */
 
      /* Note that we forgot to bump the api for ualarm, strtoll, strtoull */
 
 #define CYGWIN_VERSION_API_MAJOR 0
-#define CYGWIN_VERSION_API_MINOR 72
+#define CYGWIN_VERSION_API_MINOR 73
 
      /* There is also a compatibity version number associated with the
 	shared memory regions.  It is incremented when incompatible

winsup/cygwin/syscalls.cc

@@ -2131,6 +2131,31 @@ setuid (__uid16_t uid)
   return setuid32 (uid16touid32 (uid));
 }
 
+extern "C" int
+setreuid32 (__uid32_t ruid, __uid32_t euid)
+{
+  int ret = 0;
+  bool tried = false;
+  __uid32_t old_euid = myself->uid;
+
+  if (ruid != ILLEGAL_UID && cygheap->user.real_uid != ruid && euid != ruid)
+    tried = !(ret = seteuid32 (ruid));
+  if (!ret && euid != ILLEGAL_UID)
+    ret = seteuid32 (euid);
+  if (tried && (ret || euid == ILLEGAL_UID) && seteuid32 (old_euid))
+    system_printf ("Cannot restore original euid %u", old_euid);
+  if (!ret && ruid != ILLEGAL_UID)
+    cygheap->user.real_uid = ruid;
+  debug_printf ("real: %u, effective: %u", cygheap->user.real_uid, myself->uid);
+  return ret;
+}
+
+extern "C" int
+setreuid (__uid16_t ruid, __uid16_t euid)
+{
+  return setreuid32 (uid16touid32 (ruid), uid16touid32 (euid));
+}
+
 /* setegid: from System V.  */
 extern "C" int
 setegid32 (__gid32_t gid)
@@ -2209,6 +2234,31 @@ setgid (__gid16_t gid)
   return ret;
 }
 
+extern "C" int
+setregid32 (__gid32_t rgid, __gid32_t egid)
+{
+  int ret = 0;
+  bool tried = false;
+  __gid32_t old_egid = myself->gid;
+
+  if (rgid != ILLEGAL_GID && cygheap->user.real_gid != rgid && egid != rgid)
+    tried = !(ret = setegid32 (rgid));
+  if (!ret && egid != ILLEGAL_GID)
+    ret = setegid32 (egid);
+  if (tried && (ret || egid == ILLEGAL_GID) && setegid32 (old_egid))
+    system_printf ("Cannot restore original egid %u", old_egid);
+  if (!ret && rgid != ILLEGAL_GID)
+    cygheap->user.real_gid = rgid;
+  debug_printf ("real: %u, effective: %u", cygheap->user.real_gid, myself->gid);
+  return ret;
+}
+
+extern "C" int
+setregid (__gid16_t rgid, __gid16_t egid)
+{
+  return setregid32 (gid16togid32 (rgid), gid16togid32 (egid));
+}
+
 /* chroot: privileged Unix system call.  */
 /* FIXME: Not privileged here. How should this be done? */
 extern "C" int