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Subject[PATCH][COMPAT] compat_sys_sigpending and compat_sys_sigprocmask generic
Hi Linus,

This patch creates compat_sys_sigpending and compat_sys_sigprocmask
and removes all the arch specific versions. It requires my previous
patch ("PATCH][COMPAT] compat_{old_}sigset_t"). The diffstat of
the entire patch is below, but here I have included only the generic
part.

arch/ia64/ia32/ia32_entry.S | 4 +-
arch/ia64/ia32/ia32_signal.c | 6 ----
arch/ia64/ia32/sys_ia32.c | 6 ----
arch/mips64/kernel/scall_o32.S | 4 +-
arch/mips64/kernel/signal32.c | 38 ----------------------------
arch/parisc/kernel/signal32.c | 51 --------------------------------------
arch/parisc/kernel/syscall.S | 4 +-
arch/ppc64/kernel/misc.S | 4 +-
arch/ppc64/kernel/signal32.c | 50 -------------------------------------
arch/s390x/kernel/entry.S | 4 +-
arch/s390x/kernel/linux32.c | 32 -----------------------
arch/s390x/kernel/wrapper32.S | 18 ++++++-------
arch/sparc64/kernel/sys_sparc32.c | 32 -----------------------
arch/sparc64/kernel/systbls.S | 6 ++--
arch/x86_64/ia32/ia32entry.S | 4 +-
arch/x86_64/ia32/sys_ia32.c | 35 --------------------------
kernel/compat.c | 44 ++++++++++++++++++++++++++++++++
17 files changed, 67 insertions(+), 275 deletions(-)

--
Cheers,
Stephen Rothwell sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/

diff -ruN 2.5.58-32bit.5/kernel/compat.c 2.5.58-32bit.6/kernel/compat.c
--- 2.5.58-32bit.5/kernel/compat.c 2003-01-09 16:24:07.000000000 +1100
+++ 2.5.58-32bit.6/kernel/compat.c 2003-01-16 11:26:43.000000000 +1100
@@ -4,7 +4,7 @@
* Kernel compatibililty routines for e.g. 32 bit syscall support
* on 64 bit kernels.
*
- * Copyright (C) 2002 Stephen Rothwell, IBM Corporation
+ * Copyright (C) 2002-2003 Stephen Rothwell, IBM Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -15,6 +15,7 @@
#include <linux/compat.h>
#include <linux/errno.h>
#include <linux/time.h>
+#include <linux/signal.h>

#include <asm/uaccess.h>

@@ -166,3 +167,44 @@
}
return compat_jiffies_to_clock_t(jiffies);
}
+
+/*
+ * Assumption: old_sigset_t and compat_old_sigset_t are both
+ * types that can be passed to put_user()/get_user().
+ */
+
+extern asmlinkage long sys_sigpending(old_sigset_t *);
+
+asmlinkage long compat_sys_sigpending(compat_old_sigset_t *set)
+{
+ old_sigset_t s;
+ long ret;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs(KERNEL_DS);
+ ret = sys_sigpending(&s);
+ set_fs(old_fs);
+ if (ret == 0)
+ ret = put_user(s, set);
+ return ret;
+}
+
+extern asmlinkage long sys_sigprocmask(int, old_sigset_t *, old_sigset_t *);
+
+asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t *set,
+ compat_old_sigset_t *oset)
+{
+ old_sigset_t s;
+ long ret;
+ mm_segment_t old_fs;
+
+ if (set && get_user(s, set))
+ return -EFAULT;
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ ret = sys_sigprocmask(how, set ? &s : NULL, oset ? &s : NULL);
+ set_fs(old_fs);
+ if (ret == 0)
+ ret = put_user(s, oset);
+ return ret;
+}
-
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