Update.

	* sysdeps/unix/opendir.c: Use O_DIRECTORY if available.  If not
	available double check to verify it's a directory.

	* sysdeps/unix/sysv/linux/alpha/bits/fcntl.h: Add O_DIRECTORY.
	* sysdeps/unix/sysv/linux/mips/bits/fcntl: Likewise.
	* sysdeps/unix/sysv/linux/bits/fcntl.h: Remove O_* constants which
	are not generally available.
	* sysdeps/unix/sysv/linux/i386/bits/fcntl.h: New file.

	* sysdeps/unix/sysv/linux/i386/setgroups.c: Add range check for values.
	* sysdeps/unix/sysv/linux/arm/Makefile: New file.
	* sysdeps/unix/sysv/linux/arm/setegid.c: New file.
	* sysdeps/unix/sysv/linux/arm/seteuid.c: New file.
	* sysdeps/unix/sysv/linux/arm/setfsgid.c: New file.
	* sysdeps/unix/sysv/linux/arm/setfsuid.c: New file.
	* sysdeps/unix/sysv/linux/arm/setgid.c: New file.
	* sysdeps/unix/sysv/linux/arm/setgroups.c: New file.
	* sysdeps/unix/sysv/linux/arm/setresgid.c: New file.
	* sysdeps/unix/sysv/linux/arm/setresuid.c: New file.
	* sysdeps/unix/sysv/linux/arm/setuid.c: New file.
	* sysdeps/unix/sysv/linux/i386/setegid.c: New file.
	* sysdeps/unix/sysv/linux/i386/seteuid.c: New file.
	* sysdeps/unix/sysv/linux/i386/setfsgid.c: New file.
	* sysdeps/unix/sysv/linux/i386/setfsuid.c: New file.
	* sysdeps/unix/sysv/linux/i386/setgid.c: New file.
	* sysdeps/unix/sysv/linux/i386/setgroups.c: New file.
	* sysdeps/unix/sysv/linux/i386/setresgid.c: New file.
	* sysdeps/unix/sysv/linux/i386/setresuid.c: New file.
	* sysdeps/unix/sysv/linux/i386/setuid.c: New file.
	* sysdeps/unix/sysv/linux/m68k/setegid.c: New file.
	* sysdeps/unix/sysv/linux/m68k/seteuid.c: New file.
	* sysdeps/unix/sysv/linux/m68k/setfsgid.c: New file.
	* sysdeps/unix/sysv/linux/m68k/setfsuid.c: New file.
	* sysdeps/unix/sysv/linux/m68k/setgid.c: New file.
	* sysdeps/unix/sysv/linux/m68k/setgroups.c: New file.
	* sysdeps/unix/sysv/linux/m68k/setresgid.c: New file.
	* sysdeps/unix/sysv/linux/m68k/setresuid.c: New file.
	* sysdeps/unix/sysv/linux/m68k/setuid.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc32/setegid.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc32/seteuid.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc32/setfsgid.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc32/setfsuid.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc32/setgid.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc32/setgroups.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc32/setresgid.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc32/setresuid.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc32/setuid.c: New file.

	* sysdeps/unix/sysv/linux/arm/syscalls.list: Add s_setgid, s_setresuid,
	s_setresgid, and s_setuid.
	* sysdeps/unix/sysv/linux/i386/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/m68k/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list: Likewise.
	* sysdeps/unix/sysv/linux/i386/Makefile [subdir=misc]
	(sysdep_routines): Add setfsgid, setfsuid, setresgid, and setresuid.
	* sysdeps/unix/sysv/linux/m68k/Makefile: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/Makefile: Likewise.

1998-10-16  Ulrich Drepper  <drepper@cygnus.com>

	* iconv/skeleton.c: Include ELF header only of STATIC_GCONV is not

39 files changed, 584 insertions, 14 deletions

diff --git a/sysdeps/unix/opendir.c b/sysdeps/unix/opendir.c
index 77f2a0a490..657ad176a8 100644
--- a/sysdeps/unix/opendir.c
+++ b/sysdeps/unix/opendir.c
@@ -29,6 +29,30 @@
 
 #include <dirstream.h>
 
+
+/* We want to be really safe the file we opened is a directory.  Some systems
+   have support for this, others don't.  */
+#ifdef O_DIRECTORY
+# define OPENDIR(NAME) \
+  do {									      \
+    fd = __open (NAME, O_RDONLY|O_NDELAY|O_DIRECTORY);			      \
+    if (fd < 0)								      \
+      return NULL;							      \
+  } while (0)
+#else
+# define OPENDIR(NAME) \
+  do {									      \
+    fd = __open (NAME, O_RDONLY|O_NDELAY);				      \
+    if (fd < 0 || __fstat (fd, &statbuf) < 0 || ! S_ISDIR (statbuf.st_mode))  \
+      {									      \
+	if (fd >= 0)							      \
+	  __close (fd);							      \
+	return NULL;							      \
+      }									      \
+  } while (0)
+#endif
+
+
 /* Open a directory stream on NAME.  */
 DIR *
 __opendir (const char *name)
@@ -58,9 +82,7 @@ __opendir (const char *name)
       return NULL;
     }
 
-  fd = __open (name, O_RDONLY|O_NDELAY);
-  if (fd < 0)
-    return NULL;
+  OPENDIR (name);
 
   if (__fcntl (fd, F_SETFD, FD_CLOEXEC) < 0)
     goto lose;
diff --git a/sysdeps/unix/sysv/linux/alpha/bits/fcntl.h b/sysdeps/unix/sysv/linux/alpha/bits/fcntl.h
index 7cd32a34a3..e67ad19f65 100644
--- a/sysdeps/unix/sysv/linux/alpha/bits/fcntl.h
+++ b/sysdeps/unix/sysv/linux/alpha/bits/fcntl.h
@@ -45,6 +45,7 @@
 
 #ifdef __USE_GNU
 # define O_DIRECT	040000	/* Direct disk access.  */
+# define O_DIRECTORY	0100000	/* Must be a directory.  */
 #endif
 
 /* Not necessary, files are always with 64bit off_t.  */
diff --git a/sysdeps/unix/sysv/linux/arm/Makefile b/sysdeps/unix/sysv/linux/arm/Makefile
new file mode 100644
index 0000000000..e65a5c1fa3
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arm/Makefile
@@ -0,0 +1,3 @@
+ifeq ($(subdir),misc)
+sysdep_routines += setfsgid setfsuid setresgid setresuid
+endif
diff --git a/sysdeps/unix/sysv/linux/arm/setegid.c b/sysdeps/unix/sysv/linux/arm/setegid.c
new file mode 100644
index 0000000000..2e3a54c893
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arm/setegid.c
@@ -0,0 +1 @@
+#include <sysdeps/unix/sysv/linux/i386/setegid.c>
diff --git a/sysdeps/unix/sysv/linux/arm/seteuid.c b/sysdeps/unix/sysv/linux/arm/seteuid.c
new file mode 100644
index 0000000000..18e41d08c1
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arm/seteuid.c
@@ -0,0 +1 @@
+#include <sysdeps/unix/sysv/linux/i386/seteuid.c>
diff --git a/sysdeps/unix/sysv/linux/arm/setfsgid.c b/sysdeps/unix/sysv/linux/arm/setfsgid.c
new file mode 100644
index 0000000000..0886712569
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arm/setfsgid.c
@@ -0,0 +1 @@
+#include <sysdeps/unix/sysv/linux/i386/setfsgid.c>
diff --git a/sysdeps/unix/sysv/linux/arm/setfsuid.c b/sysdeps/unix/sysv/linux/arm/setfsuid.c
new file mode 100644
index 0000000000..a9f22eb8ab
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arm/setfsuid.c
@@ -0,0 +1 @@
+#include <sysdeps/unix/sysv/linux/i386/setfsuid.c>
diff --git a/sysdeps/unix/sysv/linux/arm/setgid.c b/sysdeps/unix/sysv/linux/arm/setgid.c
new file mode 100644
index 0000000000..377021d9ec
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arm/setgid.c
@@ -0,0 +1 @@
+#include <sysdeps/unix/sysv/linux/i386/setgid.c>
diff --git a/sysdeps/unix/sysv/linux/arm/setgroups.c b/sysdeps/unix/sysv/linux/arm/setgroups.c
new file mode 100644
index 0000000000..0e7086278f
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arm/setgroups.c
@@ -0,0 +1,2 @@
+/* We also have to rewrite the kernel gid_t to the user land type.  */
+#include <sysdeps/unix/sysv/linux/i386/setgroups.c>
diff --git a/sysdeps/unix/sysv/linux/arm/setresgid.c b/sysdeps/unix/sysv/linux/arm/setresgid.c
new file mode 100644
index 0000000000..daca1a4833
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arm/setresgid.c
@@ -0,0 +1 @@
+#include <sysdeps/unix/sysv/linux/i386/setresgid.c>
diff --git a/sysdeps/unix/sysv/linux/arm/setresuid.c b/sysdeps/unix/sysv/linux/arm/setresuid.c
new file mode 100644
index 0000000000..3aeabe9ad7
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arm/setresuid.c
@@ -0,0 +1 @@
+#include <sysdeps/unix/sysv/linux/i386/setresuid.c>
diff --git a/sysdeps/unix/sysv/linux/arm/setuid.c b/sysdeps/unix/sysv/linux/arm/setuid.c
new file mode 100644
index 0000000000..de394379be
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/arm/setuid.c
@@ -0,0 +1 @@
+#include <sysdeps/unix/sysv/linux/i386/setuid.c>
diff --git a/sysdeps/unix/sysv/linux/arm/syscalls.list b/sysdeps/unix/sysv/linux/arm/syscalls.list
index a3ecdd7d73..3adc087d15 100644
--- a/sysdeps/unix/sysv/linux/arm/syscalls.list
+++ b/sysdeps/unix/sysv/linux/arm/syscalls.list
@@ -2,6 +2,10 @@
 
 s_getgroups	getgroups getgroups	2	__syscall_getgroups
 s_llseek	llseek	_llseek		5	__sys_llseek
+s_setgid	setgid	setgid		1	__syscall_setgid
 s_setgroups	setgroups setgroups	2	__syscall_setgroups
+s_setresuid	setresuid setresuid	3	__syscall_setresuid
+s_setresgid	setresgid setresgid	3	__syscall_setresgid
+s_setuid	setuid	setuid		1	__syscall_setuid
 vm86		-	vm86		1	__vm86		vm86
 syscall		-	syscall		5	syscall
diff --git a/sysdeps/unix/sysv/linux/bits/fcntl.h b/sysdeps/unix/sysv/linux/bits/fcntl.h
index c2a8ee91ac..42ad79f6ab 100644
--- a/sysdeps/unix/sysv/linux/bits/fcntl.h
+++ b/sysdeps/unix/sysv/linux/bits/fcntl.h
@@ -42,7 +42,7 @@
 #define O_ASYNC		020000
 
 #ifdef __USE_GNU
-# define O_DIRECT	040000	/* Direct disk access.  */
+# define O_DIRECTORY	040000	/* Must be a directory.  */
 #endif
 
 /* For now Linux has synchronisity options for data and read operations.
@@ -53,10 +53,6 @@
 # define O_RSYNC	O_SYNC	/* Synchronize read operations.  */
 #endif
 
-#ifdef __USE_LARGEFILE64
-# define O_LARGEFILE	0100000
-#endif
-
 /* Values for the second argument to `fcntl'.  */
 #define F_DUPFD		0	/* Duplicate file descriptor.  */
 #define F_GETFD		1	/* Get file descriptor flags.  */
diff --git a/sysdeps/unix/sysv/linux/i386/Makefile b/sysdeps/unix/sysv/linux/i386/Makefile
index c27f390b59..29011fd22e 100644
--- a/sysdeps/unix/sysv/linux/i386/Makefile
+++ b/sysdeps/unix/sysv/linux/i386/Makefile
@@ -1,5 +1,6 @@
 ifeq ($(subdir),misc)
-sysdep_routines += ioperm iopl vm86 s_pread64 s_pwrite64
+sysdep_routines += ioperm iopl vm86 s_pread64 s_pwrite64 setfsgid setfsuid \
+		   setresgid setresuid
 sysdep_headers += sys/elf.h sys/perm.h sys/reg.h sys/vm86.h sys/debugreg.h
 endif
 
diff --git a/sysdeps/unix/sysv/linux/i386/bits/fcntl.h b/sysdeps/unix/sysv/linux/i386/bits/fcntl.h
new file mode 100644
index 0000000000..0c8afd22fa
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/i386/bits/fcntl.h
@@ -0,0 +1,138 @@
+/* O_*, F_*, FD_* bit values for Linux.
+   Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef	_FCNTL_H
+# error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
+#endif
+
+
+#include <sys/types.h>
+
+/* open/fcntl - O_SYNC is only implemented on blocks devices and on files
+   located on an ext2 file system */
+#define O_ACCMODE	   0003
+#define O_RDONLY	     00
+#define O_WRONLY	     01
+#define O_RDWR		     02
+#define O_CREAT		   0100	/* not fcntl */
+#define O_EXCL		   0200	/* not fcntl */
+#define O_NOCTTY	   0400	/* not fcntl */
+#define O_TRUNC		  01000	/* not fcntl */
+#define O_APPEND	  02000
+#define O_NONBLOCK	  04000
+#define O_NDELAY	O_NONBLOCK
+#define O_SYNC		 010000
+#define O_FSYNC		 O_SYNC
+#define O_ASYNC		 020000
+
+#ifdef __USE_GNU
+# define O_DIRECT	 040000	/* Direct disk access.  */
+# define O_DIRECTORY	0200000	/* Must be a directory.  */
+#endif
+
+/* For now Linux has synchronisity options for data and read operations.
+   We define the symbols here but let them do the same as O_SYNC since
+   this is a superset.  */
+#if defined __USE_POSIX199309 || defined __USE_UNIX98
+# define O_DSYNC	O_SYNC	/* Synchronize data.  */
+# define O_RSYNC	O_SYNC	/* Synchronize read operations.  */
+#endif
+
+#ifdef __USE_LARGEFILE64
+# define O_LARGEFILE	0100000
+#endif
+
+/* Values for the second argument to `fcntl'.  */
+#define F_DUPFD		0	/* Duplicate file descriptor.  */
+#define F_GETFD		1	/* Get file descriptor flags.  */
+#define F_SETFD		2	/* Set file descriptor flags.  */
+#define F_GETFL		3	/* Get file status flags.  */
+#define F_SETFL		4	/* Set file status flags.  */
+#define F_GETLK		5	/* Get record locking info.  */
+#define F_SETLK		6	/* Set record locking info (non-blocking).  */
+#define F_SETLKW	7	/* Set record locking info (blocking).  */
+
+/* XXX missing */
+#define F_GETLK64	5	/* Get record locking info.  */
+#define F_SETLK64	6	/* Set record locking info (non-blocking).  */
+#define F_SETLKW64	7	/* Set record locking info (blocking).  */
+
+#ifdef __USE_BSD
+# define F_SETOWN	8	/* Get owner of socket (receiver of SIGIO).  */
+# define F_GETOWN	9	/* Set owner of socket (receiver of SIGIO).  */
+#endif
+
+#ifdef __USE_GNU
+# define F_SETSIG	10	/* Set number of signal to be sent.  */
+# define F_GETSIG	11	/* Get number of signal to be sent.  */
+#endif
+
+/* For F_[GET|SET]FL.  */
+#define FD_CLOEXEC	1	/* actually anything with low bit set goes */
+
+/* For posix fcntl() and `l_type' field of a `struct flock' for lockf().  */
+#define F_RDLCK		0	/* Read lock.  */
+#define F_WRLCK		1	/* Write lock.  */
+#define F_UNLCK		2	/* Remove lock.  */
+
+/* for old implementation of bsd flock () */
+#define F_EXLCK		4	/* or 3 */
+#define F_SHLCK		8	/* or 4 */
+
+/* operations for bsd flock(), also used by the kernel implementation */
+#define LOCK_SH		1	/* shared lock */
+#define LOCK_EX		2	/* exclusive lock */
+#define LOCK_NB		4	/* or'd with one of the above to prevent
+				   blocking */
+#define LOCK_UN		8	/* remove lock */
+
+struct flock
+  {
+    short int l_type;	/* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
+    short int l_whence;	/* Where `l_start' is relative to (like `lseek').  */
+#ifndef __USE_FILE_OFFSET64
+    __off_t l_start;	/* Offset where the lock begins.  */
+    __off_t l_len;	/* Size of the locked area; zero means until EOF.  */
+#else
+    __off64_t l_start;	/* Offset where the lock begins.  */
+    __off64_t l_len;	/* Size of the locked area; zero means until EOF.  */
+#endif
+    __pid_t l_pid;	/* Process holding the lock.  */
+  };
+
+#ifdef __USE_LARGEFILE64
+struct flock64
+  {
+    short int l_type;	/* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
+    short int l_whence;	/* Where `l_start' is relative to (like `lseek').  */
+    __off64_t l_start;	/* Offset where the lock begins.  */
+    __off64_t l_len;	/* Size of the locked area; zero means until EOF.  */
+    __pid_t l_pid;	/* Process holding the lock.  */
+  };
+#endif
+
+/* Define some more compatibility macros to be backward compatible with
+   BSD systems which did not managed to hide these kernel macros.  */
+#ifdef	__USE_BSD
+# define FAPPEND	O_APPEND
+# define FFSYNC		O_FSYNC
+# define FASYNC		O_ASYNC
+# define FNONBLOCK	O_NONBLOCK
+# define FNDELAY	O_NDELAY
+#endif /* Use BSD.  */
diff --git a/sysdeps/unix/sysv/linux/i386/setegid.c b/sysdeps/unix/sysv/linux/i386/setegid.c
new file mode 100644
index 0000000000..e29d2eab7b
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/i386/setegid.c
@@ -0,0 +1,37 @@
+/* Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <unistd.h>
+#include <sys/types.h>
+
+#include <linux/posix_types.h>
+
+int
+setegid (gid)
+     gid_t gid;
+{
+  if (gid == (gid_t) ~0
+      || gid != (gid_t) ((__kernel_gid_t) gid))
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  return __setregid (-1, gid);
+}
diff --git a/sysdeps/unix/sysv/linux/i386/seteuid.c b/sysdeps/unix/sysv/linux/i386/seteuid.c
new file mode 100644
index 0000000000..e82ecc36e9
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/i386/seteuid.c
@@ -0,0 +1,53 @@
+/* Copyright (C) 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <linux/posix_types.h>
+
+#ifdef __NR_setresuid
+extern int __setresuid (uid_t ruid, uid_t euid, uid_t suid);
+#endif
+
+int
+seteuid (uid_t uid)
+{
+  int result;
+
+  if (uid == (uid_t) ~0
+      || uid != (uid_t) ((__kernel_uid_t) uid))
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  /* First try the syscall.  */
+#ifdef __NR_setresuid
+  result = __setresuid (-1, uid, -1);
+  if (result == -1 && errno == ENOSYS)
+    /* No system call available.  Use emulation.  This may not work
+       since `setreuid' also sets the saved user ID when UID is not
+       equal to the real user ID, making it impossible to switch back.  */
+#endif
+    result = __setreuid (-1, uid);
+
+  return result;
+}
diff --git a/sysdeps/unix/sysv/linux/i386/setfsgid.c b/sysdeps/unix/sysv/linux/i386/setfsgid.c
new file mode 100644
index 0000000000..4af26f554d
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/i386/setfsgid.c
@@ -0,0 +1,47 @@
+/* Copyright (C) 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <linux/posix_types.h>
+
+#ifdef __NR_setfsgid
+extern int __syscall_setfsgid (__kernel_gid_t);
+
+int
+setfsgid (gid_t gid)
+{
+  if (gid != (gid_t) ((__kernel_gid_t) gid))
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  return __syscall_setfsgid (gid);
+}
+#else
+int
+setfsgid (gid_t gid)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+#endif
diff --git a/sysdeps/unix/sysv/linux/i386/setfsuid.c b/sysdeps/unix/sysv/linux/i386/setfsuid.c
new file mode 100644
index 0000000000..5133dc0045
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/i386/setfsuid.c
@@ -0,0 +1,47 @@
+/* Copyright (C) 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <linux/posix_types.h>
+
+#ifdef __NR_setfsuid
+extern int __syscall_setfsuid (__kernel_uid_t);
+
+int
+setfsuid (uid_t uid)
+{
+  if (uid != (uid_t) ((__kernel_uid_t) uid))
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  return __syscall_setfsuid (uid);
+}
+#else
+int
+setfsuid (uid_t uid)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+#endif
diff --git a/sysdeps/unix/sysv/linux/i386/setgid.c b/sysdeps/unix/sysv/linux/i386/setgid.c
new file mode 100644
index 0000000000..87fbd74e05
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/i386/setgid.c
@@ -0,0 +1,40 @@
+/* Copyright (C) 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <linux/posix_types.h>
+
+extern int __syscall_setgid (__kernel_gid_t);
+
+int
+__setgid (gid_t gid)
+{
+  if (gid == (gid_t) ~0
+      || gid != (gid_t) ((__kernel_gid_t) gid))
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  return __syscall_setgid (gid);
+}
+weak_alias (__setgid, setgid)
diff --git a/sysdeps/unix/sysv/linux/i386/setgroups.c b/sysdeps/unix/sysv/linux/i386/setgroups.c
index 8f8711913e..38e62a8217 100644
--- a/sysdeps/unix/sysv/linux/i386/setgroups.c
+++ b/sysdeps/unix/sysv/linux/i386/setgroups.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 1998 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -16,6 +16,7 @@
    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA 02111-1307, USA.  */
 
+#include <errno.h>
 #include <sys/types.h>
 #include <unistd.h>
 #include <grp.h>
@@ -36,6 +37,13 @@ setgroups (n, groups)
   __kernel_gid_t kernel_groups[n];
 
   for (i = 0; i < n; i++)
-    kernel_groups[i] = groups[i];
+    {
+      kernel_groups[i] = groups[i];
+      if (groups[i] != (gid_t) ((__kernel_gid_t) groups[i]))
+	{
+	  __set_errno (EINVAL);
+	  return -1;
+	}
+    }
   return __syscall_setgroups (n, kernel_groups);
 }
diff --git a/sysdeps/unix/sysv/linux/i386/setresgid.c b/sysdeps/unix/sysv/linux/i386/setresgid.c
new file mode 100644
index 0000000000..82d967b39b
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/i386/setresgid.c
@@ -0,0 +1,46 @@
+/* Copyright (C) 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <unistd.h>
+#include <sys/types.h>
+
+#include <linux/posix_types.h>
+
+#include <sys/syscall.h>
+#ifdef __NR_setresgid
+
+extern int __syscall_setresgid (__kernel_gid_t rgid, __kernel_gid_t egid,
+				__kernel_gid_t sgid);
+
+int
+setresgid (gid_t rgid, gid_t egid, gid_t sgid)
+{
+  if ((rgid != (gid_t) ((__kernel_gid_t) rgid))
+      || (egid != (gid_t) ((__kernel_gid_t) egid))
+      || (sgid != (gid_t) ((__kernel_gid_t) sgid)))
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  return __syscall_setresgid (rgid, egid, sgid);
+}
+#else
+# include <sysdeps/generic/setresgid.c>
+#endif
diff --git a/sysdeps/unix/sysv/linux/i386/setresuid.c b/sysdeps/unix/sysv/linux/i386/setresuid.c
new file mode 100644
index 0000000000..db8a44fb61
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/i386/setresuid.c
@@ -0,0 +1,47 @@
+/* Copyright (C) 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <unistd.h>
+#include <sys/types.h>
+
+#include <linux/posix_types.h>
+
+#include <sys/syscall.h>
+#ifdef __NR_setresuid
+
+extern int __syscall_setresuid (__kernel_uid_t rgid, __kernel_uid_t egid,
+				__kernel_uid_t sgid);
+
+int
+__setresuid (gid_t ruid, gid_t euid, gid_t suid)
+{
+  if ((ruid != (uid_t) ((__kernel_uid_t) ruid))
+      || (euid != (uid_t) ((__kernel_uid_t) euid))
+      || (suid != (uid_t) ((__kernel_uid_t) suid)))
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  return __syscall_setresuid (ruid, euid, suid);
+}
+weak_alias (__setresuid, setresuid)
+#else
+# include <sysdeps/generic/setresuid.c>
+#endif
diff --git a/sysdeps/unix/sysv/linux/i386/setuid.c b/sysdeps/unix/sysv/linux/i386/setuid.c
new file mode 100644
index 0000000000..3379114384
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/i386/setuid.c
@@ -0,0 +1,40 @@
+/* Copyright (C) 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <linux/posix_types.h>
+
+extern int __syscall_setuid (__kernel_uid_t);
+
+int
+__setuid (uid_t uid)
+{
+  if (uid == (uid_t) ~0
+      || uid != (uid_t) ((__kernel_uid_t) uid))
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  return __syscall_setuid (uid);
+}
+weak_alias (__setuid, setuid)
diff --git a/sysdeps/unix/sysv/linux/i386/syscalls.list b/sysdeps/unix/sysv/linux/i386/syscalls.list
index 2c167b9bdd..e02c5cffce 100644
--- a/sysdeps/unix/sysv/linux/i386/syscalls.list
+++ b/sysdeps/unix/sysv/linux/i386/syscalls.list
@@ -4,5 +4,11 @@ modify_ldt	EXTRA	modify_ldt	3	__modify_ldt	modify_ldt
 s_chown		chown	chown		3	__syscall_chown
 s_getgroups	getgroups getgroups	2	__syscall_getgroups
 s_llseek	llseek	_llseek		5	__sys_llseek
+s_setfsgid	setfsgid setfsgid	1	__syscall_setfsgid
+s_setfsuid	setfsuid setfsuid	1	__syscall_setfsuid
+s_setgid	setgid	setgid		1	__syscall_setgid
 s_setgroups	setgroups setgroups	2	__syscall_setgroups
+s_setresgid	setresgid setresgid	3	__syscall_setresgid
+s_setresuid	setresuid setresuid	3	__syscall_setresuid
+s_setuid	setuid	setuid		1	__syscall_setuid
 vm86		-	vm86		1	__vm86		vm86
diff --git a/sysdeps/unix/sysv/linux/m68k/Makefile b/sysdeps/unix/sysv/linux/m68k/Makefile
index 71cee22442..7e46d51b86 100644
--- a/sysdeps/unix/sysv/linux/m68k/Makefile
+++ b/sysdeps/unix/sysv/linux/m68k/Makefile
@@ -3,7 +3,7 @@
 m68k-syntax-flag = -DMOTOROLA_SYNTAX
 
 ifeq ($(subdir),misc)
-sysdep_routines += mremap
+sysdep_routines += mremap setfsgid setfsuid setresgid setresuid
 sysdep_headers += sys/reg.h
 endif
 
diff --git a/sysdeps/unix/sysv/linux/m68k/syscalls.list b/sysdeps/unix/sysv/linux/m68k/syscalls.list
index 473c2ec5b2..971c4ee7bf 100644
--- a/sysdeps/unix/sysv/linux/m68k/syscalls.list
+++ b/sysdeps/unix/sysv/linux/m68k/syscalls.list
@@ -4,4 +4,8 @@ cacheflush	EXTRA	cacheflush	4	__cacheflush	cacheflush
 
 s_getgroups	getgroups getgroups	2	__syscall_getgroups
 s_llseek	llseek	_llseek		5	__sys_llseek
+s_setgid	setgid	setgid		1	__syscall_setgid
 s_setgroups	setgroups setgroups	2	__syscall_setgroups
+s_setresgid	setresgid setresgid	3	__syscall_setresgid
+s_setresuid	setresuid setresuid	3	__syscall_setresuid
+s_setuid	setuid	setuid		1	__syscall_setuid
diff --git a/sysdeps/unix/sysv/linux/mips/bits/fcntl.h b/sysdeps/unix/sysv/linux/mips/bits/fcntl.h
index 0a0d9c9d00..63e754d5fe 100644
--- a/sysdeps/unix/sysv/linux/mips/bits/fcntl.h
+++ b/sysdeps/unix/sysv/linux/mips/bits/fcntl.h
@@ -38,7 +38,11 @@
 #define O_EXCL		0x0400	/* not fcntl */
 #define O_NOCTTY	0x0800	/* not fcntl */
 #define O_FSYNC		O_SYNC
-#define O_ASYNC		020000
+#define O_ASYNC		0x1000
+
+#ifdef __USE_GNU
+# define O_DIRECTORY	0x2000	/* Must be a directory.  */
+#endif
 
 #define O_NDELAY	O_NONBLOCK
 
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/Makefile b/sysdeps/unix/sysv/linux/sparc/sparc32/Makefile
index 016290646a..5ba1ccdc62 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/Makefile
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/Makefile
@@ -1,6 +1,10 @@
 asm-CPPFLAGS=-D__ASSEMBLY__
 ASFLAGS-.os=-fPIC
 
+ifeq ($(subdir),misc)
+sysdep_routines += setfsgid setfsuid setresgid setresuid
+endif
+
 # When I get this to work, this is the right thing
 ifeq ($(subdir),elf)
 CFLAGS-rtld.c += -mv8
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/setegid.c b/sysdeps/unix/sysv/linux/sparc/sparc32/setegid.c
new file mode 100644
index 0000000000..2e3a54c893
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/setegid.c
@@ -0,0 +1 @@
+#include <sysdeps/unix/sysv/linux/i386/setegid.c>
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/seteuid.c b/sysdeps/unix/sysv/linux/sparc/sparc32/seteuid.c
new file mode 100644
index 0000000000..18e41d08c1
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/seteuid.c
@@ -0,0 +1 @@
+#include <sysdeps/unix/sysv/linux/i386/seteuid.c>
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/setfsgid.c b/sysdeps/unix/sysv/linux/sparc/sparc32/setfsgid.c
new file mode 100644
index 0000000000..0886712569
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/setfsgid.c
@@ -0,0 +1 @@
+#include <sysdeps/unix/sysv/linux/i386/setfsgid.c>
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/setfsuid.c b/sysdeps/unix/sysv/linux/sparc/sparc32/setfsuid.c
new file mode 100644
index 0000000000..a9f22eb8ab
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/setfsuid.c
@@ -0,0 +1 @@
+#include <sysdeps/unix/sysv/linux/i386/setfsuid.c>
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/setgid.c b/sysdeps/unix/sysv/linux/sparc/sparc32/setgid.c
new file mode 100644
index 0000000000..377021d9ec
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/setgid.c
@@ -0,0 +1 @@
+#include <sysdeps/unix/sysv/linux/i386/setgid.c>
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/setresgid.c b/sysdeps/unix/sysv/linux/sparc/sparc32/setresgid.c
new file mode 100644
index 0000000000..daca1a4833
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/setresgid.c
@@ -0,0 +1 @@
+#include <sysdeps/unix/sysv/linux/i386/setresgid.c>
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/setresuid.c b/sysdeps/unix/sysv/linux/sparc/sparc32/setresuid.c
new file mode 100644
index 0000000000..3aeabe9ad7
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/setresuid.c
@@ -0,0 +1 @@
+#include <sysdeps/unix/sysv/linux/i386/setresuid.c>
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/setuid.c b/sysdeps/unix/sysv/linux/sparc/sparc32/setuid.c
new file mode 100644
index 0000000000..de394379be
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/setuid.c
@@ -0,0 +1 @@
+#include <sysdeps/unix/sysv/linux/i386/setuid.c>
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list b/sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list
index 14c4691896..fce5b5fcf9 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/syscalls.list
@@ -1,6 +1,10 @@
 # File name	Caller	Syscall name	# args	Strong name	Weak names
 
 s_getgroups	getgroups getgroups	2	__syscall_getgroups
+s_getpagesize	getpagesize getpagesize	0	__syscall_getpagesize
 s_llseek	llseek	_llseek		5	__sys_llseek
+s_setgid	setgid	setgid		1	__syscall_setgid
 s_setgroups	setgroups setgroups	2	__syscall_setgroups
-s_getpagesize	getpagesize getpagesize	0	__syscall_getpagesize
+s_setresgid	setresgid setresgid	3	__syscall_setresgid
+s_setresuid	setresuid setresuid	3	__syscall_setresuid
+s_setuid	setuid	setuid		1	__syscall_setuid