Commit 2c73ce73 authored by H. Peter Anvin's avatar H. Peter Anvin
Browse files

x86-64, ia32: Drop sys32_rt_sigprocmask 



On x86, the only difference between sys_rt_sigprocmask and
sys32_rt_sigprocmask is the alignment of the data structures.
However, x86 allows data accesses with arbitrary alignment, and
therefore there is no reason for this code to be different.

Reported-by: default avatarGregory M. Lueck <gregory.m.lueck@intel.com>
Signed-off-by: default avatarH. Peter Anvin <hpa@zytor.com>
parent bb212724

arch/x86/ia32/sys_ia32.c

+0 −40
Original line number Diff line number Diff line
@@ -287,46 +287,6 @@ asmlinkage long sys32_sigaction(int sig, struct old_sigaction32 __user *act, 
	return ret;

}



asmlinkage long sys32_rt_sigprocmask(int how, compat_sigset_t __user *set,

				     compat_sigset_t __user *oset,

				     unsigned int sigsetsize)

{

	sigset_t s;

	compat_sigset_t s32;

	int ret;

	mm_segment_t old_fs = get_fs();



	if (set) {

		if (copy_from_user(&s32, set, sizeof(compat_sigset_t)))

			return -EFAULT;

		switch (_NSIG_WORDS) {

		case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);

		case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);

		case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);

		case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);

		}

	}

	set_fs(KERNEL_DS);

	ret = sys_rt_sigprocmask(how,

				 set ? (sigset_t __user *)&s : NULL,

				 oset ? (sigset_t __user *)&s : NULL,

				 sigsetsize);

	set_fs(old_fs);

	if (ret)

		return ret;

	if (oset) {

		switch (_NSIG_WORDS) {

		case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3];

		case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2];

		case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1];

		case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0];

		}

		if (copy_to_user(oset, &s32, sizeof(compat_sigset_t)))

			return -EFAULT;

	}

	return 0;

}



asmlinkage long sys32_alarm(unsigned int seconds)

{

	return alarm_setitimer(seconds);

arch/x86/include/asm/sys_ia32.h

+0 −2
Original line number Diff line number Diff line
@@ -36,8 +36,6 @@ asmlinkage long sys32_rt_sigaction(int, struct sigaction32 __user *, 
				   struct sigaction32 __user *, unsigned int);

asmlinkage long sys32_sigaction(int, struct old_sigaction32 __user *,

				struct old_sigaction32 __user *);

asmlinkage long sys32_rt_sigprocmask(int, compat_sigset_t __user *,

				     compat_sigset_t __user *, unsigned int);

asmlinkage long sys32_alarm(unsigned int);



asmlinkage long sys32_waitpid(compat_pid_t, unsigned int *, int);

arch/x86/syscalls/syscall_32.tbl

+1 −1
Original line number Diff line number Diff line
@@ -181,7 +181,7 @@ 
172	i386	prctl			sys_prctl

173	i386	rt_sigreturn		ptregs_rt_sigreturn		stub32_rt_sigreturn

174	i386	rt_sigaction		sys_rt_sigaction		sys32_rt_sigaction

175	i386	rt_sigprocmask		sys_rt_sigprocmask		sys32_rt_sigprocmask

175	i386	rt_sigprocmask		sys_rt_sigprocmask

176	i386	rt_sigpending		sys_rt_sigpending		sys32_rt_sigpending

177	i386	rt_sigtimedwait		sys_rt_sigtimedwait		compat_sys_rt_sigtimedwait

178	i386	rt_sigqueueinfo		sys_rt_sigqueueinfo		sys32_rt_sigqueueinfo

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