Commit 0a0e8cdf authored by Al Viro's avatar Al Viro
Browse files

old sigsuspend variants in kernel/signal.c 



conditional on OLD_SIGSUSPEND/OLD_SIGSUSPEND3, depending on which
variety of that fossil is needed.

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 75907d4d

arch/Kconfig

+10 −0
Original line number Diff line number Diff line
@@ -387,4 +387,14 @@ config ODD_RT_SIGACTION 
	help

	  Architecture has unusual rt_sigaction(2) arguments



config OLD_SIGSUSPEND

	bool

	help

	  Architecture has old sigsuspend(2) syscall, of one-argument variety



config OLD_SIGSUSPEND3

	bool

	help

	  Even weirder antique ABI - three-argument sigsuspend(2)



source "kernel/gcov/Kconfig"

include/linux/syscalls.h

+8 −0
Original line number Diff line number Diff line
@@ -377,6 +377,14 @@ asmlinkage long sys_init_module(void __user *umod, unsigned long len, 
asmlinkage long sys_delete_module(const char __user *name_user,

				unsigned int flags);



#ifdef CONFIG_OLD_SIGSUSPEND

asmlinkage long sys_sigsuspend(old_sigset_t mask);

#endif



#ifdef CONFIG_OLD_SIGSUSPEND3

asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask);

#endif



#ifndef CONFIG_ODD_RT_SIGACTION

asmlinkage long sys_rt_sigaction(int,

				 const struct sigaction __user *,

kernel/signal.c

+17 −0
Original line number Diff line number Diff line
@@ -3454,6 +3454,23 @@ COMPAT_SYSCALL_DEFINE2(rt_sigsuspend, compat_sigset_t __user *, unewset, compat_ 
#endif

#endif



#ifdef CONFIG_OLD_SIGSUSPEND

SYSCALL_DEFINE1(sigsuspend, old_sigset_t, mask)

{

	sigset_t blocked;

	siginitset(&blocked, mask);

	return sigsuspend(&blocked);

}

#endif

#ifdef CONFIG_OLD_SIGSUSPEND3

SYSCALL_DEFINE3(sigsuspend, int, unused1, int, unused2, old_sigset_t, mask)

{

	sigset_t blocked;

	siginitset(&blocked, mask);

	return sigsuspend(&blocked);

}

#endif



__attribute__((weak)) const char *arch_vma_name(struct vm_area_struct *vma)

{

	return NULL;