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Diffstat (limited to 'arch/um/sys-i386/signal.c')
-rw-r--r--arch/um/sys-i386/signal.c62
1 files changed, 30 insertions, 32 deletions
diff --git a/arch/um/sys-i386/signal.c b/arch/um/sys-i386/signal.c
index c64d487..c82e5f5 100644
--- a/arch/um/sys-i386/signal.c
+++ b/arch/um/sys-i386/signal.c
@@ -1,17 +1,13 @@
/*
- * Copyright (C) 2004 Jeff Dike (jdike@addtoit.com)
+ * Copyright (C) 2004 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL
*/
-#include "linux/signal.h"
#include "linux/ptrace.h"
-#include "asm/current.h"
-#include "asm/ucontext.h"
-#include "asm/uaccess.h"
#include "asm/unistd.h"
+#include "asm/uaccess.h"
+#include "asm/ucontext.h"
#include "frame_kern.h"
-#include "sigcontext.h"
-#include "registers.h"
#include "skas.h"
void copy_sc(struct uml_pt_regs *regs, void *from)
@@ -39,21 +35,21 @@ void copy_sc(struct uml_pt_regs *regs, void *from)
static int copy_sc_from_user(struct pt_regs *regs,
struct sigcontext __user *from)
{
- struct sigcontext sc;
+ struct sigcontext sc;
unsigned long fpregs[HOST_FP_SIZE];
int err;
err = copy_from_user(&sc, from, sizeof(sc));
err |= copy_from_user(fpregs, sc.fpstate, sizeof(fpregs));
- if(err)
+ if (err)
return err;
copy_sc(&regs->regs, &sc);
err = restore_fp_registers(userspace_pid[0], fpregs);
- if(err < 0) {
- printk("copy_sc_from_user_skas - PTRACE_SETFPREGS failed, "
- "errno = %d\n", -err);
+ if (err < 0) {
+ printk(KERN_ERR "copy_sc_from_user_skas - PTRACE_SETFPREGS "
+ "failed, errno = %d\n", -err);
return err;
}
@@ -64,7 +60,7 @@ static int copy_sc_to_user(struct sigcontext __user *to,
struct _fpstate __user *to_fp, struct pt_regs *regs,
unsigned long sp)
{
- struct sigcontext sc;
+ struct sigcontext sc;
unsigned long fpregs[HOST_FP_SIZE];
struct faultinfo * fi = &current->thread.arch.faultinfo;
int err;
@@ -86,28 +82,29 @@ static int copy_sc_to_user(struct sigcontext __user *to,
sc.eflags = REGS_EFLAGS(regs->regs.regs);
sc.esp_at_signal = regs->regs.regs[UESP];
sc.ss = regs->regs.regs[SS];
- sc.cr2 = fi->cr2;
- sc.err = fi->error_code;
- sc.trapno = fi->trap_no;
+ sc.cr2 = fi->cr2;
+ sc.err = fi->error_code;
+ sc.trapno = fi->trap_no;
err = save_fp_registers(userspace_pid[0], fpregs);
- if(err < 0){
- printk("copy_sc_to_user_skas - PTRACE_GETFPREGS failed, "
- "errno = %d\n", err);
+ if (err < 0) {
+ printk(KERN_ERR "copy_sc_to_user_skas - PTRACE_GETFPREGS "
+ "failed, errno = %d\n", err);
return 1;
}
to_fp = (to_fp ? to_fp : (struct _fpstate __user *) (to + 1));
sc.fpstate = to_fp;
- if(err)
+ if (err)
return err;
return copy_to_user(to, &sc, sizeof(sc)) ||
copy_to_user(to_fp, fpregs, sizeof(fpregs));
}
-static int copy_ucontext_to_user(struct ucontext __user *uc, struct _fpstate __user *fp,
- sigset_t *set, unsigned long sp)
+static int copy_ucontext_to_user(struct ucontext __user *uc,
+ struct _fpstate __user *fp, sigset_t *set,
+ unsigned long sp)
{
int err = 0;
@@ -157,7 +154,7 @@ int setup_signal_stack_sc(unsigned long stack_top, int sig,
return 1;
restorer = frame->retcode;
- if(ka->sa.sa_flags & SA_RESTORER)
+ if (ka->sa.sa_flags & SA_RESTORER)
restorer = ka->sa.sa_restorer;
/* Update SP now because the page fault handler refuses to extend
@@ -189,7 +186,7 @@ int setup_signal_stack_sc(unsigned long stack_top, int sig,
err |= __put_user(__NR_sigreturn, (int __user *)(frame->retcode+2));
err |= __put_user(0x80cd, (short __user *)(frame->retcode+6));
- if(err)
+ if (err)
goto err;
PT_REGS_SP(regs) = (unsigned long) frame;
@@ -222,7 +219,7 @@ int setup_signal_stack_si(unsigned long stack_top, int sig,
return 1;
restorer = frame->retcode;
- if(ka->sa.sa_flags & SA_RESTORER)
+ if (ka->sa.sa_flags & SA_RESTORER)
restorer = ka->sa.sa_restorer;
/* See comment above about why this is here */
@@ -247,7 +244,7 @@ int setup_signal_stack_si(unsigned long stack_top, int sig,
err |= __put_user(__NR_rt_sigreturn, (int __user *)(frame->retcode+1));
err |= __put_user(0x80cd, (short __user *)(frame->retcode+5));
- if(err)
+ if (err)
goto err;
PT_REGS_IP(regs) = (unsigned long) ka->sa.sa_handler;
@@ -274,8 +271,8 @@ long sys_sigreturn(struct pt_regs regs)
unsigned long __user *extramask = frame->extramask;
int sig_size = (_NSIG_WORDS - 1) * sizeof(unsigned long);
- if(copy_from_user(&set.sig[0], oldmask, sizeof(set.sig[0])) ||
- copy_from_user(&set.sig[1], extramask, sig_size))
+ if (copy_from_user(&set.sig[0], oldmask, sizeof(set.sig[0])) ||
+ copy_from_user(&set.sig[1], extramask, sig_size))
goto segfault;
sigdelsetmask(&set, ~_BLOCKABLE);
@@ -285,7 +282,7 @@ long sys_sigreturn(struct pt_regs regs)
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
- if(copy_sc_from_user(&current->thread.regs, sc))
+ if (copy_sc_from_user(&current->thread.regs, sc))
goto segfault;
/* Avoid ERESTART handling */
@@ -300,12 +297,13 @@ long sys_sigreturn(struct pt_regs regs)
long sys_rt_sigreturn(struct pt_regs regs)
{
unsigned long sp = PT_REGS_SP(&current->thread.regs);
- struct rt_sigframe __user *frame = (struct rt_sigframe __user *) (sp - 4);
+ struct rt_sigframe __user *frame =
+ (struct rt_sigframe __user *) (sp - 4);
sigset_t set;
struct ucontext __user *uc = &frame->uc;
int sig_size = _NSIG_WORDS * sizeof(unsigned long);
- if(copy_from_user(&set, &uc->uc_sigmask, sig_size))
+ if (copy_from_user(&set, &uc->uc_sigmask, sig_size))
goto segfault;
sigdelsetmask(&set, ~_BLOCKABLE);
@@ -315,7 +313,7 @@ long sys_rt_sigreturn(struct pt_regs regs)
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
- if(copy_sc_from_user(&current->thread.regs, &uc->uc_mcontext))
+ if (copy_sc_from_user(&current->thread.regs, &uc->uc_mcontext))
goto segfault;
/* Avoid ERESTART handling */
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