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Diffstat (limited to 'arch/parisc/kernel/signal32.c')
-rw-r--r--arch/parisc/kernel/signal32.c42
1 files changed, 32 insertions, 10 deletions
diff --git a/arch/parisc/kernel/signal32.c b/arch/parisc/kernel/signal32.c
index a6b4231..1c1a37f 100644
--- a/arch/parisc/kernel/signal32.c
+++ b/arch/parisc/kernel/signal32.c
@@ -1,6 +1,8 @@
/* Signal support for 32-bit kernel builds
*
* Copyright (C) 2001 Matthew Wilcox <willy at parisc-linux.org>
+ * Copyright (C) 2006 Kyle McMartin <kyle at parisc-linux.org>
+ *
* Code was mostly borrowed from kernel/signal.c.
* See kernel/signal.c for additional Copyrights.
*
@@ -401,7 +403,7 @@ setup_sigcontext32(struct compat_sigcontext __user *sc, struct compat_regfile __
int
copy_siginfo_from_user32 (siginfo_t *to, compat_siginfo_t __user *from)
{
- unsigned long tmp;
+ compat_uptr_t addr;
int err;
if (!access_ok(VERIFY_READ, from, sizeof(compat_siginfo_t)))
@@ -424,8 +426,8 @@ copy_siginfo_from_user32 (siginfo_t *to, compat_siginfo_t __user *from)
err |= __get_user(to->si_uid, &from->si_uid);
break;
case __SI_FAULT >> 16:
- err |= __get_user(tmp, &from->si_addr);
- to->si_addr = (void __user *) tmp;
+ err |= __get_user(addr, &from->si_addr);
+ to->si_addr = compat_ptr(addr);
break;
case __SI_POLL >> 16:
err |= __get_user(to->si_band, &from->si_band);
@@ -445,7 +447,8 @@ copy_siginfo_from_user32 (siginfo_t *to, compat_siginfo_t __user *from)
int
copy_siginfo_to_user32 (compat_siginfo_t __user *to, siginfo_t *from)
{
- unsigned int addr;
+ compat_uptr_t addr;
+ compat_int_t val;
int err;
if (!access_ok(VERIFY_WRITE, to, sizeof(compat_siginfo_t)))
@@ -474,8 +477,8 @@ copy_siginfo_to_user32 (compat_siginfo_t __user *to, siginfo_t *from)
err |= __put_user(from->si_uid, &to->si_uid);
break;
case __SI_FAULT >> 16:
- /* avoid type-checking warnings by copying _pad[0] in lieu of si_addr... */
- err |= __put_user(from->_sifields._pad[0], &to->si_addr);
+ addr = ptr_to_compat(from->si_addr);
+ err |= __put_user(addr, &to->si_addr);
break;
case __SI_POLL >> 16:
err |= __put_user(from->si_band, &to->si_band);
@@ -484,17 +487,36 @@ copy_siginfo_to_user32 (compat_siginfo_t __user *to, siginfo_t *from)
case __SI_TIMER >> 16:
err |= __put_user(from->si_tid, &to->si_tid);
err |= __put_user(from->si_overrun, &to->si_overrun);
- addr = (unsigned long) from->si_ptr;
- err |= __put_user(addr, &to->si_ptr);
+ val = (compat_int_t)from->si_int;
+ err |= __put_user(val, &to->si_int);
break;
case __SI_RT >> 16: /* Not generated by the kernel as of now. */
case __SI_MESGQ >> 16:
err |= __put_user(from->si_uid, &to->si_uid);
err |= __put_user(from->si_pid, &to->si_pid);
- addr = (unsigned long) from->si_ptr;
- err |= __put_user(addr, &to->si_ptr);
+ val = (compat_int_t)from->si_int;
+ err |= __put_user(val, &to->si_int);
break;
}
}
return err;
}
+
+asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig,
+ struct compat_siginfo __user *uinfo)
+{
+ siginfo_t info;
+
+ if (copy_siginfo_from_user32(&info, uinfo))
+ return -EFAULT;
+
+ /* Not even root can pretend to send signals from the kernel.
+ Nor can they impersonate a kill(), which adds source info. */
+ if (info.si_code >= 0)
+ return -EPERM;
+ info.si_signo = sig;
+
+ /* POSIX.1b doesn't mention process groups. */
+ return kill_proc_info(sig, &info, pid);
+}
+
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