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OpenCloudOS-Kernel
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tile: switch to generic compat rt_sigaction() 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2012-12-25 18:43:46 -05:00
parent 7b5d3c1d11
commit a402922bff
3 changed files with 1 additions and 53 deletions
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1
arch/tile/Kconfig
View File

@ -22,6 +22,7 @@ config TILE
select GENERIC_CLOCKEVENTS
select MODULES_USE_ELF_RELA
select GENERIC_SIGALTSTACK
select GENERIC_COMPAT_RT_SIGACTION
select GENERIC_COMPAT_RT_SIGQUEUEINFO
select GENERIC_COMPAT_RT_SIGPROCMASK
select GENERIC_COMPAT_RT_SIGPENDING

4
arch/tile/include/asm/compat.h
View File

@ -272,12 +272,8 @@ extern int compat_setup_rt_frame(int sig, struct k_sigaction *ka,
struct pt_regs *regs);
/* Compat syscalls. */
struct compat_sigaction;
struct compat_siginfo;
struct compat_sigaltstack;
long compat_sys_rt_sigaction(int sig, struct compat_sigaction __user *act,
struct compat_sigaction __user *oact,
size_t sigsetsize);
long compat_sys_rt_sigreturn(void);
long compat_sys_truncate64(char __user *filename, u32 dummy, u32 low, u32 high);
long compat_sys_ftruncate64(unsigned int fd, u32 dummy, u32 low, u32 high);

49
arch/tile/kernel/compat_signal.c
View File

@ -34,13 +34,6 @@
#include <asm/syscalls.h>
#include <arch/interrupts.h>
struct compat_sigaction {
compat_uptr_t sa_handler;
compat_ulong_t sa_flags;
compat_uptr_t sa_restorer;
sigset_t sa_mask __packed;
};
struct compat_ucontext {
compat_ulong_t uc_flags;
compat_uptr_t uc_link;
@ -55,48 +48,6 @@ struct compat_rt_sigframe {
struct compat_ucontext uc;
};
long compat_sys_rt_sigaction(int sig, struct compat_sigaction __user *act,
struct compat_sigaction __user *oact,
size_t sigsetsize)
{
struct k_sigaction new_sa, old_sa;
int ret = -EINVAL;
/* XXX: Don't preclude handling different sized sigset_t's. */
if (sigsetsize != sizeof(sigset_t))
goto out;
if (act) {
compat_uptr_t handler, restorer;
if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
__get_user(handler, &act->sa_handler) ||
__get_user(new_sa.sa.sa_flags, &act->sa_flags) ||
__get_user(restorer, &act->sa_restorer) ||
__copy_from_user(&new_sa.sa.sa_mask, &act->sa_mask,
sizeof(sigset_t)))
return -EFAULT;
new_sa.sa.sa_handler = compat_ptr(handler);
new_sa.sa.sa_restorer = compat_ptr(restorer);
}
ret = do_sigaction(sig, act ? &new_sa : NULL, oact ? &old_sa : NULL);
if (!ret && oact) {
if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
__put_user(ptr_to_compat(old_sa.sa.sa_handler),
&oact->sa_handler) ||
__put_user(ptr_to_compat(old_sa.sa.sa_restorer),
&oact->sa_restorer) ||
__put_user(old_sa.sa.sa_flags, &oact->sa_flags) ||
__copy_to_user(&oact->sa_mask, &old_sa.sa.sa_mask,
sizeof(sigset_t)))
return -EFAULT;
}
out:
return ret;
}
int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from)
{
int err;