[ARM,MIPS,M68K] prlimit updates

["Joseph S. Myers" <joseph at codesourcery dot com>]

This patch updates the ARM, MIPS and M68K ports for the recent addition of 
prlimit/prlimit64 support to libc.  I've committed the ARM and MIPS 
changes; OK to commit the M68K changes?

The following need updating for a port for these changes:

* If the port has its own bits/resource.h file, that needs updating to add 
the new declarations.  Thus, Alpha maintainers may wish to update the 
Alpha copy of this file.

* For 32-bit ports, and others not using 
sysdeps/unix/sysv/linux/wordsize-64, syscalls.list needs updating to add 
the new syscall, with either the entry from other 32-bit ports or the 
entry from wordsize-64 as applicable.  Thus, PA maintainers may wish to 
update the PA syscalls.list.  (MIPS n64 does not use 
sysdeps/unix/sysv/linux/wordsize-64 because of differences between the 
stat and stat64 structures, hence the changes here to three different 
files for the three different MIPS ABIs to get the right syscall 
definitions in each case.)

diff --git a/ChangeLog.arm b/ChangeLog.arm
index 8238431..f8cb056 100644
--- a/ChangeLog.arm
+++ b/ChangeLog.arm
@@ -1,3 +1,8 @@
+2010-08-12  Joseph Myers  <joseph@codesourcery.com>
+
+	* sysdeps/unix/sysv/linux/arm/syscalls.list: Add entry for
+	prlimit64 syscall.
+
 2010-06-14  Joseph Myers  <joseph@codesourcery.com>
 
 	* sysdeps/unix/sysv/linux/arm/bits/fcntl.h (F_SETPIPE_SZ,
diff --git a/ChangeLog.m68k b/ChangeLog.m68k
index 284a3bf..4d3ffed 100644
--- a/ChangeLog.m68k
+++ b/ChangeLog.m68k
@@ -1,3 +1,8 @@
+2010-08-12  Joseph Myers  <joseph@codesourcery.com>
+
+	* sysdeps/unix/sysv/linux/m68k/syscalls.list: Add entry for
+	prlimit64 syscall.
+
 2010-08-02  Andreas Schwab  <schwab@linux-m68k.org>
 
 	* sysdeps/m68k/coldfire/sysdep.h: New file.
diff --git a/ChangeLog.mips b/ChangeLog.mips
index b43fc65..d33ccab 100644
--- a/ChangeLog.mips
+++ b/ChangeLog.mips
@@ -1,3 +1,12 @@
+2010-08-12  Joseph Myers  <joseph@codesourcery.com>
+
+	* sysdeps/unix/sysv/linux/mips/bits/resource.h: Declare prlimit
+	and prlimit64.
+	* sysdeps/unix/sysv/linux/mips/mips32/syscalls.list,
+	sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list: New files.
+	* sysdeps/unix/sysv/linux/mips/n32/syscalls.list: Add entry for
+	prlimit64 syscall.
+
 2010-06-14  Joseph Myers  <joseph@codesourcery.com>
 
 	* sysdeps/unix/sysv/linux/mips/bits/fcntl.h (F_SETPIPE_SZ,
diff --git a/sysdeps/unix/sysv/linux/arm/syscalls.list b/sysdeps/unix/sysv/linux/arm/syscalls.list
index 1db0030..cc75737 100644
--- a/sysdeps/unix/sysv/linux/arm/syscalls.list
+++ b/sysdeps/unix/sysv/linux/arm/syscalls.list
@@ -3,3 +3,5 @@
 syscall		-	syscall		7	syscall
 oldgetrlimit	EXTRA	getrlimit	i:ip	__old_getrlimit	getrlimit@GLIBC_2.0
 oldsetrlimit	EXTRA	setrlimit	i:ip	__old_setrlimit	setrlimit@GLIBC_2.0
+
+prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
diff --git a/sysdeps/unix/sysv/linux/m68k/syscalls.list b/sysdeps/unix/sysv/linux/m68k/syscalls.list
index 5367ef0..f479ef0 100644
--- a/sysdeps/unix/sysv/linux/m68k/syscalls.list
+++ b/sysdeps/unix/sysv/linux/m68k/syscalls.list
@@ -1,3 +1,5 @@
 # File name	Caller	Syscall name	Args	Strong name	Weak names
 
 cacheflush	EXTRA	cacheflush	i:iiii	__cacheflush	cacheflush
+
+prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
diff --git a/sysdeps/unix/sysv/linux/mips/bits/resource.h b/sysdeps/unix/sysv/linux/mips/bits/resource.h
index 39d17d7..a6454c4 100644
--- a/sysdeps/unix/sysv/linux/mips/bits/resource.h
+++ b/sysdeps/unix/sysv/linux/mips/bits/resource.h
@@ -1,6 +1,6 @@
 /* Bit values & structures for resource limits.  Linux/MIPS version.
    Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2004, 2005, 2006, 2008,
-   2009 Free Software Foundation, Inc.
+   2009, 2010 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
@@ -240,3 +240,31 @@ enum __priority_which
   PRIO_USER = 2			/* WHO is a user ID.  */
 #define PRIO_USER PRIO_USER
 };
+
+
+__BEGIN_DECLS
+
+#ifdef __USE_GNU
+/* Modify and return resource limits of a process atomically.  */
+# ifndef __USE_FILE_OFFSET64
+extern int prlimit (__pid_t __pid, enum __rlimit_resource __resource,
+		    __const struct rlimit *__new_limit,
+		    struct rlimit *__old_limit) __THROW;
+# else
+#  ifdef __REDIRECT_NTH
+extern int __REDIRECT_NTH (prlimit, (__pid_t __pid,
+				     enum __rlimit_resource __resource,
+				     __const struct rlimit *__new_limit,
+				     struct rlimit *__old_limit), prlimit64);
+#  else
+#   define prlimit prlimit64
+#  endif
+# endif
+# ifdef __USE_LARGEFILE64
+extern int prlimit64 (__pid_t __pid, enum __rlimit_resource __resource,
+		      __const struct rlimit64 *__new_limit,
+		      struct rlimit64 *__old_limit) __THROW;
+# endif
+#endif
+
+__END_DECLS
diff --git a/sysdeps/unix/sysv/linux/mips/mips32/syscalls.list b/sysdeps/unix/sysv/linux/mips/mips32/syscalls.list
new file mode 100644
index 0000000..dbeb184
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/mips/mips32/syscalls.list
@@ -0,0 +1,3 @@
+# File name	Caller	Syscall name	# args	Strong name	Weak names
+
+prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/syscalls.list b/sysdeps/unix/sysv/linux/mips/mips64/n32/syscalls.list
index 5ade6f0..7a6a777 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/syscalls.list
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/syscalls.list
@@ -4,3 +4,5 @@ readahead	-	readahead	i:iii	__readahead	readahead
 sync_file_range	-	sync_file_range	i:iiii	sync_file_range
 ftruncate	-	ftruncate	i:ii	__ftruncate	ftruncate ftruncate64 __ftruncate64
 truncate	-	truncate	i:si	truncate	truncate64
+
+prlimit64	EXTRA	prlimit64	i:iipp	prlimit64
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list b/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list
new file mode 100644
index 0000000..a7bccdd
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list
@@ -0,0 +1,3 @@
+# File name	Caller	Syscall name	# args	Strong name	Weak names
+
+prlimit		EXTRA	prlimit64	i:iipp	prlimit		prlimit64

-- 
Joseph S. Myers
joseph@codesourcery.com