#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/smp.h>
-#include <linux/smp_lock.h>
#include <linux/kernel.h>
#include <linux/signal.h>
#include <linux/syscalls.h>
#include <linux/errno.h>
#include <linux/wait.h>
#include <linux/ptrace.h>
-#include <linux/compat.h>
#include <linux/suspend.h>
#include <linux/compiler.h>
+#include <linux/uaccess.h>
#include <asm/abi.h>
#include <asm/asm.h>
#include <linux/bitops.h>
#include <asm/cacheflush.h>
#include <asm/sim.h>
-#include <asm/uaccess.h>
#include <asm/ucontext.h>
#include <asm/system.h>
#include <asm/fpu.h>
#include "signal-common.h"
-#define SI_PAD_SIZE32 ((SI_MAX_SIZE/sizeof(int)) - 3)
-
-typedef struct compat_siginfo {
- int si_signo;
- int si_code;
- int si_errno;
-
- union {
- int _pad[SI_PAD_SIZE32];
-
- /* kill() */
- struct {
- compat_pid_t _pid; /* sender's pid */
- compat_uid_t _uid; /* sender's uid */
- } _kill;
-
- /* SIGCHLD */
- struct {
- compat_pid_t _pid; /* which child */
- compat_uid_t _uid; /* sender's uid */
- int _status; /* exit code */
- compat_clock_t _utime;
- compat_clock_t _stime;
- } _sigchld;
-
- /* IRIX SIGCHLD */
- struct {
- compat_pid_t _pid; /* which child */
- compat_clock_t _utime;
- int _status; /* exit code */
- compat_clock_t _stime;
- } _irix_sigchld;
-
- /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
- struct {
- s32 _addr; /* faulting insn/memory ref. */
- } _sigfault;
-
- /* SIGPOLL, SIGXFSZ (To do ...) */
- struct {
- int _band; /* POLL_IN, POLL_OUT, POLL_MSG */
- int _fd;
- } _sigpoll;
-
- /* POSIX.1b timers */
- struct {
- timer_t _tid; /* timer id */
- int _overrun; /* overrun count */
- compat_sigval_t _sigval;/* same as below */
- int _sys_private; /* not to be passed to user */
- } _timer;
-
- /* POSIX.1b signals */
- struct {
- compat_pid_t _pid; /* sender's pid */
- compat_uid_t _uid; /* sender's uid */
- compat_sigval_t _sigval;
- } _rt;
-
- } _sifields;
-} compat_siginfo_t;
-
/*
* Including <asm/unistd.h> would give use the 64-bit syscall numbers ...
*/
/*
* sigcontext handlers
*/
+static int protected_save_fp_context32(struct sigcontext32 __user *sc)
+{
+ int err;
+ while (1) {
+ lock_fpu_owner();
+ own_fpu_inatomic(1);
+ err = save_fp_context32(sc); /* this might fail */
+ unlock_fpu_owner();
+ if (likely(!err))
+ break;
+ /* touch the sigcontext and try again */
+ err = __put_user(0, &sc->sc_fpregs[0]) |
+ __put_user(0, &sc->sc_fpregs[31]) |
+ __put_user(0, &sc->sc_fpc_csr);
+ if (err)
+ break; /* really bad sigcontext */
+ }
+ return err;
+}
+
+static int protected_restore_fp_context32(struct sigcontext32 __user *sc)
+{
+ int err, tmp;
+ while (1) {
+ lock_fpu_owner();
+ own_fpu_inatomic(0);
+ err = restore_fp_context32(sc); /* this might fail */
+ unlock_fpu_owner();
+ if (likely(!err))
+ break;
+ /* touch the sigcontext and try again */
+ err = __get_user(tmp, &sc->sc_fpregs[0]) |
+ __get_user(tmp, &sc->sc_fpregs[31]) |
+ __get_user(tmp, &sc->sc_fpc_csr);
+ if (err)
+ break; /* really bad sigcontext */
+ }
+ return err;
+}
+
static int setup_sigcontext32(struct pt_regs *regs,
struct sigcontext32 __user *sc)
{
* Save FPU state to signal context. Signal handler
* will "inherit" current FPU state.
*/
- preempt_disable();
- own_fpu(1);
- err |= save_fp_context32(sc);
- preempt_enable();
+ err |= protected_save_fp_context32(sc);
}
return err;
}
err = sig = fpcsr_pending(&sc->sc_fpc_csr);
if (err > 0)
err = 0;
- preempt_disable();
- own_fpu(0);
- err |= restore_fp_context32(sc);
- preempt_enable();
+ err |= protected_restore_fp_context32(sc);
return err ?: sig;
}
default:
__put_sigset_unknown_nsig();
case 2:
- err |= __put_user (kbuf->sig[1] >> 32, &ubuf->sig[3]);
- err |= __put_user (kbuf->sig[1] & 0xffffffff, &ubuf->sig[2]);
+ err |= __put_user(kbuf->sig[1] >> 32, &ubuf->sig[3]);
+ err |= __put_user(kbuf->sig[1] & 0xffffffff, &ubuf->sig[2]);
case 1:
- err |= __put_user (kbuf->sig[0] >> 32, &ubuf->sig[1]);
- err |= __put_user (kbuf->sig[0] & 0xffffffff, &ubuf->sig[0]);
+ err |= __put_user(kbuf->sig[0] >> 32, &ubuf->sig[1]);
+ err |= __put_user(kbuf->sig[0] & 0xffffffff, &ubuf->sig[0]);
}
return err;
default:
__get_sigset_unknown_nsig();
case 2:
- err |= __get_user (sig[3], &ubuf->sig[3]);
- err |= __get_user (sig[2], &ubuf->sig[2]);
+ err |= __get_user(sig[3], &ubuf->sig[3]);
+ err |= __get_user(sig[2], &ubuf->sig[2]);
kbuf->sig[1] = sig[2] | (sig[3] << 32);
case 1:
- err |= __get_user (sig[1], &ubuf->sig[1]);
- err |= __get_user (sig[0], &ubuf->sig[0]);
+ err |= __get_user(sig[1], &ubuf->sig[1]);
+ err |= __get_user(sig[0], &ubuf->sig[0]);
kbuf->sig[0] = sig[0] | (sig[1] << 32);
}
return -ERESTARTNOHAND;
}
-asmlinkage int sys32_sigaction(int sig, const struct sigaction32 __user *act,
- struct sigaction32 __user *oact)
+SYSCALL_DEFINE3(32_sigaction, long, sig, const struct sigaction32 __user *, act,
+ struct sigaction32 __user *, oact)
{
struct k_sigaction new_ka, old_ka;
int ret;
return -EFAULT;
}
- set_fs (KERNEL_DS);
+ set_fs(KERNEL_DS);
ret = do_sigaltstack(uss ? (stack_t __user *)&kss : NULL,
uoss ? (stack_t __user *)&koss : NULL, usp);
- set_fs (old_fs);
+ set_fs(old_fs);
if (!ret && uoss) {
if (!access_ok(VERIFY_WRITE, uoss, sizeof(*uoss)))
return err;
}
+int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from)
+{
+ memset(to, 0, sizeof *to);
+
+ if (copy_from_user(to, from, 3*sizeof(int)) ||
+ copy_from_user(to->_sifields._pad,
+ from->_sifields._pad, SI_PAD_SIZE32))
+ return -EFAULT;
+
+ return 0;
+}
+
asmlinkage void sys32_sigreturn(nabi_no_regargs struct pt_regs regs)
{
struct sigframe32 __user *frame;
/* It is more difficult to avoid calling this function than to
call it and ignore errors. */
old_fs = get_fs();
- set_fs (KERNEL_DS);
+ set_fs(KERNEL_DS);
do_sigaltstack((stack_t __user *)&st, NULL, regs.regs[29]);
- set_fs (old_fs);
+ set_fs(old_fs);
/*
* Don't let your children do this ...
.restart = __NR_O32_restart_syscall
};
-asmlinkage int sys32_rt_sigaction(int sig, const struct sigaction32 __user *act,
- struct sigaction32 __user *oact,
- unsigned int sigsetsize)
+SYSCALL_DEFINE4(32_rt_sigaction, int, sig,
+ const struct sigaction32 __user *, act,
+ struct sigaction32 __user *, oact, unsigned int, sigsetsize)
{
struct k_sigaction new_sa, old_sa;
int ret = -EINVAL;
return ret;
}
-asmlinkage int sys32_rt_sigprocmask(int how, compat_sigset_t __user *set,
- compat_sigset_t __user *oset, unsigned int sigsetsize)
+SYSCALL_DEFINE4(32_rt_sigprocmask, int, how, compat_sigset_t __user *, set,
+ compat_sigset_t __user *, oset, unsigned int, sigsetsize)
{
sigset_t old_set, new_set;
int ret;
if (set && get_sigset(&new_set, set))
return -EFAULT;
- set_fs (KERNEL_DS);
+ set_fs(KERNEL_DS);
ret = sys_rt_sigprocmask(how, set ? (sigset_t __user *)&new_set : NULL,
oset ? (sigset_t __user *)&old_set : NULL,
sigsetsize);
- set_fs (old_fs);
+ set_fs(old_fs);
if (!ret && oset && put_sigset(&old_set, oset))
return -EFAULT;
return ret;
}
-asmlinkage int sys32_rt_sigpending(compat_sigset_t __user *uset,
- unsigned int sigsetsize)
+SYSCALL_DEFINE2(32_rt_sigpending, compat_sigset_t __user *, uset,
+ unsigned int, sigsetsize)
{
int ret;
sigset_t set;
mm_segment_t old_fs = get_fs();
- set_fs (KERNEL_DS);
+ set_fs(KERNEL_DS);
ret = sys_rt_sigpending((sigset_t __user *)&set, sigsetsize);
- set_fs (old_fs);
+ set_fs(old_fs);
if (!ret && put_sigset(&set, uset))
return -EFAULT;
return ret;
}
-asmlinkage int sys32_rt_sigqueueinfo(int pid, int sig, compat_siginfo_t __user *uinfo)
+SYSCALL_DEFINE3(32_rt_sigqueueinfo, int, pid, int, sig,
+ compat_siginfo_t __user *, uinfo)
{
siginfo_t info;
int ret;
mm_segment_t old_fs = get_fs();
- if (copy_from_user (&info, uinfo, 3*sizeof(int)) ||
- copy_from_user (info._sifields._pad, uinfo->_sifields._pad, SI_PAD_SIZE))
+ if (copy_from_user(&info, uinfo, 3*sizeof(int)) ||
+ copy_from_user(info._sifields._pad, uinfo->_sifields._pad, SI_PAD_SIZE))
return -EFAULT;
- set_fs (KERNEL_DS);
+ set_fs(KERNEL_DS);
ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *)&info);
- set_fs (old_fs);
+ set_fs(old_fs);
return ret;
}
-asmlinkage long
-sys32_waitid(int which, compat_pid_t pid,
- compat_siginfo_t __user *uinfo, int options,
- struct compat_rusage __user *uru)
+SYSCALL_DEFINE5(32_waitid, int, which, compat_pid_t, pid,
+ compat_siginfo_t __user *, uinfo, int, options,
+ struct compat_rusage __user *, uru)
{
siginfo_t info;
struct rusage ru;
mm_segment_t old_fs = get_fs();
info.si_signo = 0;
- set_fs (KERNEL_DS);
+ set_fs(KERNEL_DS);
ret = sys_waitid(which, pid, (siginfo_t __user *) &info, options,
uru ? (struct rusage __user *) &ru : NULL);
- set_fs (old_fs);
+ set_fs(old_fs);
if (ret < 0 || info.si_signo == 0)
return ret;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff