most of set_current_blocked() callers want SIGKILL/SIGSTOP removed from set
Only 3 out of 63 do not. Renamed the current variant to __set_current_blocked(), added set_current_blocked() that will exclude unblockable signals, switched open-coded instances to it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Родитель
edd63a2763
Коммит
77097ae503
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@ -226,7 +226,6 @@ do_sigreturn(struct sigcontext __user *sc, struct pt_regs *regs,
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if (__get_user(set.sig[0], &sc->sc_mask))
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goto give_sigsegv;
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sigdelsetmask(&set, ~_BLOCKABLE);
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set_current_blocked(&set);
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if (restore_sigcontext(sc, regs, sw))
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@ -261,7 +260,6 @@ do_rt_sigreturn(struct rt_sigframe __user *frame, struct pt_regs *regs,
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if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
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goto give_sigsegv;
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sigdelsetmask(&set, ~_BLOCKABLE);
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set_current_blocked(&set);
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if (restore_sigcontext(&frame->uc.uc_mcontext, regs, sw))
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@ -22,8 +22,6 @@
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#include "signal.h"
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#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
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/*
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* For ARM syscalls, we encode the syscall number into the instruction.
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*/
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@ -210,10 +208,8 @@ static int restore_sigframe(struct pt_regs *regs, struct sigframe __user *sf)
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int err;
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err = __copy_from_user(&set, &sf->uc.uc_sigmask, sizeof(set));
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if (err == 0) {
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sigdelsetmask(&set, ~_BLOCKABLE);
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if (err == 0)
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set_current_blocked(&set);
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}
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__get_user_error(regs->ARM_r0, &sf->uc.uc_mcontext.arm_r0, err);
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__get_user_error(regs->ARM_r1, &sf->uc.uc_mcontext.arm_r1, err);
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@ -22,8 +22,6 @@
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#include <asm/ucontext.h>
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#include <asm/syscalls.h>
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#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
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asmlinkage int sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
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struct pt_regs *regs)
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{
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@ -89,7 +87,6 @@ asmlinkage int sys_rt_sigreturn(struct pt_regs *regs)
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if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
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goto badframe;
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sigdelsetmask(&set, ~_BLOCKABLE);
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set_current_blocked(&set);
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if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
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@ -19,8 +19,6 @@
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#include <asm/fixed_code.h>
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#include <asm/syscall.h>
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#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
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/* Location of the trace bit in SYSCFG. */
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#define TRACE_BITS 0x0001
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@ -98,7 +96,6 @@ asmlinkage int do_rt_sigreturn(unsigned long __unused)
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if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
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goto badframe;
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sigdelsetmask(&set, ~_BLOCKABLE);
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set_current_blocked(&set);
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if (rt_restore_sigcontext(regs, &frame->uc.uc_mcontext, &r0))
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@ -20,8 +20,6 @@
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#include <asm/cacheflush.h>
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#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
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/*
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* Do a signal return, undo the signal stack.
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*/
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@ -87,7 +85,6 @@ asmlinkage int do_rt_sigreturn(struct pt_regs *regs)
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if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
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goto badframe;
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sigdelsetmask(&set, ~_BLOCKABLE);
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set_current_blocked(&set);
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if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
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@ -31,8 +31,6 @@
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#define DEBUG_SIG 0
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#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
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/* a syscall in Linux/CRIS is a break 13 instruction which is 2 bytes */
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/* manipulate regs so that upon return, it will be re-executed */
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@ -176,7 +174,6 @@ asmlinkage int sys_sigreturn(long r10, long r11, long r12, long r13, long mof,
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sizeof(frame->extramask))))
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goto badframe;
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sigdelsetmask(&set, ~_BLOCKABLE);
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set_current_blocked(&set);
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if (restore_sigcontext(regs, &frame->sc))
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@ -212,7 +209,6 @@ asmlinkage int sys_rt_sigreturn(long r10, long r11, long r12, long r13,
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if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
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goto badframe;
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sigdelsetmask(&set, ~_BLOCKABLE);
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set_current_blocked(&set);
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if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
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@ -24,9 +24,6 @@
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extern unsigned long cris_signal_return_page;
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/* Flag to check if a signal is blockable. */
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#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
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/*
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* A syscall in CRIS is really a "break 13" instruction, which is 2
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* bytes. The registers is manipulated so upon return the instruction
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@ -167,7 +164,6 @@ sys_sigreturn(long r10, long r11, long r12, long r13, long mof, long srp,
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sizeof(frame->extramask))))
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goto badframe;
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sigdelsetmask(&set, ~_BLOCKABLE);
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set_current_blocked(&set);
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if (restore_sigcontext(regs, &frame->sc))
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@ -208,7 +204,6 @@ sys_rt_sigreturn(long r10, long r11, long r12, long r13, long mof, long srp,
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if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
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goto badframe;
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sigdelsetmask(&set, ~_BLOCKABLE);
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set_current_blocked(&set);
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if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
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@ -28,8 +28,6 @@
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#define DEBUG_SIG 0
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#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
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struct fdpic_func_descriptor {
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unsigned long text;
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unsigned long GOT;
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@ -149,7 +147,6 @@ asmlinkage int sys_sigreturn(void)
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__copy_from_user(&set.sig[1], &frame->extramask, sizeof(frame->extramask)))
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goto badframe;
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sigdelsetmask(&set, ~_BLOCKABLE);
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set_current_blocked(&set);
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if (restore_sigcontext(&frame->sc, &gr8))
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@ -172,7 +169,6 @@ asmlinkage int sys_rt_sigreturn(void)
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if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
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goto badframe;
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sigdelsetmask(&set, ~_BLOCKABLE);
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set_current_blocked(&set);
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if (restore_sigcontext(&frame->uc.uc_mcontext, &gr8))
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@ -47,8 +47,6 @@
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#include <asm/traps.h>
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#include <asm/ucontext.h>
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#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
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/*
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* Atomically swap in the new signal mask, and wait for a signal.
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*/
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@ -186,7 +184,6 @@ asmlinkage int do_sigreturn(unsigned long __unused,...)
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sizeof(frame->extramask))))
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goto badframe;
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sigdelsetmask(&set, ~_BLOCKABLE);
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set_current_blocked(&set);
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if (restore_sigcontext(regs, &frame->sc, &er0))
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@ -211,7 +208,6 @@ asmlinkage int do_rt_sigreturn(unsigned long __unused,...)
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if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
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goto badframe;
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sigdelsetmask(&set, ~_BLOCKABLE);
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set_current_blocked(&set);
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if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &er0))
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@ -31,8 +31,6 @@
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#include <asm/signal.h>
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#include <asm/vdso.h>
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#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
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struct rt_sigframe {
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unsigned long tramp[2];
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struct siginfo info;
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@ -273,7 +271,6 @@ asmlinkage int sys_rt_sigreturn(void)
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if (__copy_from_user(&blocked, &frame->uc.uc_sigmask, sizeof(blocked)))
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goto badframe;
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sigdelsetmask(&blocked, ~_BLOCKABLE);
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set_current_blocked(&blocked);
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if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
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@ -30,7 +30,6 @@
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#define DEBUG_SIG 0
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#define STACK_ALIGN 16 /* minimal alignment for stack pointer */
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#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
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#if _NSIG_WORDS > 1
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# define PUT_SIGSET(k,u) __copy_to_user((u)->sig, (k)->sig, sizeof(sigset_t))
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@ -200,7 +199,6 @@ ia64_rt_sigreturn (struct sigscratch *scr)
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if (GET_SIGSET(&set, &sc->sc_mask))
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goto give_sigsegv;
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sigdelsetmask(&set, ~_BLOCKABLE);
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set_current_blocked(&set);
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if (restore_sigcontext(sc, scr))
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|
|
@ -28,8 +28,6 @@
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#define DEBUG_SIG 0
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#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
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asmlinkage int
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sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
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unsigned long r2, unsigned long r3, unsigned long r4,
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@ -111,7 +109,6 @@ sys_rt_sigreturn(unsigned long r0, unsigned long r1,
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if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
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goto badframe;
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sigdelsetmask(&set, ~_BLOCKABLE);
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set_current_blocked(&set);
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if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &result))
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@ -51,8 +51,6 @@
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#include <asm/traps.h>
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#include <asm/ucontext.h>
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#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
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#ifdef CONFIG_MMU
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/*
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@ -795,7 +793,6 @@ asmlinkage int do_sigreturn(unsigned long __unused)
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sizeof(frame->extramask))))
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goto badframe;
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sigdelsetmask(&set, ~_BLOCKABLE);
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set_current_blocked(&set);
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if (restore_sigcontext(regs, &frame->sc, frame + 1))
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@ -820,7 +817,6 @@ asmlinkage int do_rt_sigreturn(unsigned long __unused)
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if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
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goto badframe;
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sigdelsetmask(&set, ~_BLOCKABLE);
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set_current_blocked(&set);
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if (rt_restore_ucontext(regs, sw, &frame->uc))
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|
|
|
@ -41,8 +41,6 @@
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#include <asm/cacheflush.h>
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#include <asm/syscalls.h>
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#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
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asmlinkage long
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sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
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struct pt_regs *regs)
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|
@ -106,7 +104,6 @@ asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
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if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
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goto badframe;
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sigdelsetmask(&set, ~_BLOCKABLE);
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set_current_blocked(&set);
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if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &rval))
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|
|
|
@ -19,8 +19,6 @@
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# define DEBUGP(fmt, args...)
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#endif
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|
||||
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
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|
||||
/*
|
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* Determine which stack to use..
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||||
*/
|
||||
|
|
|
@ -339,7 +339,6 @@ asmlinkage void sys_sigreturn(nabi_no_regargs struct pt_regs regs)
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if (__copy_from_user(&blocked, &frame->sf_mask, sizeof(blocked)))
|
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goto badframe;
|
||||
|
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sigdelsetmask(&blocked, ~_BLOCKABLE);
|
||||
set_current_blocked(&blocked);
|
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|
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sig = restore_sigcontext(®s, &frame->sf_sc);
|
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|
@ -375,7 +374,6 @@ asmlinkage void sys_rt_sigreturn(nabi_no_regargs struct pt_regs regs)
|
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if (__copy_from_user(&set, &frame->rs_uc.uc_sigmask, sizeof(set)))
|
||||
goto badframe;
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
|
||||
sig = restore_sigcontext(®s, &frame->rs_uc.uc_mcontext);
|
||||
|
|
|
@ -465,7 +465,6 @@ asmlinkage void sys32_sigreturn(nabi_no_regargs struct pt_regs regs)
|
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if (__copy_conv_sigset_from_user(&blocked, &frame->sf_mask))
|
||||
goto badframe;
|
||||
|
||||
sigdelsetmask(&blocked, ~_BLOCKABLE);
|
||||
set_current_blocked(&blocked);
|
||||
|
||||
sig = restore_sigcontext32(®s, &frame->sf_sc);
|
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|
@ -503,7 +502,6 @@ asmlinkage void sys32_rt_sigreturn(nabi_no_regargs struct pt_regs regs)
|
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if (__copy_conv_sigset_from_user(&set, &frame->rs_uc.uc_sigmask))
|
||||
goto badframe;
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
|
||||
sig = restore_sigcontext32(®s, &frame->rs_uc.uc_mcontext);
|
||||
|
|
|
@ -109,7 +109,6 @@ asmlinkage void sysn32_rt_sigreturn(nabi_no_regargs struct pt_regs regs)
|
|||
if (__copy_conv_sigset_from_user(&set, &frame->rs_uc.uc_sigmask))
|
||||
goto badframe;
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
|
||||
sig = restore_sigcontext(®s, &frame->rs_uc.uc_mcontext);
|
||||
|
|
|
@ -31,8 +31,6 @@
|
|||
|
||||
#define DEBUG_SIG 0
|
||||
|
||||
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
|
||||
|
||||
/*
|
||||
* atomically swap in the new signal mask, and wait for a signal.
|
||||
*/
|
||||
|
@ -163,7 +161,6 @@ asmlinkage long sys_sigreturn(void)
|
|||
sizeof(frame->extramask)))
|
||||
goto badframe;
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
|
||||
if (restore_sigcontext(current_frame(), &frame->sc, &d0))
|
||||
|
@ -191,7 +188,6 @@ asmlinkage long sys_rt_sigreturn(void)
|
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if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
|
||||
goto badframe;
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
|
||||
if (restore_sigcontext(current_frame(), &frame->uc.uc_mcontext, &d0))
|
||||
|
|
|
@ -33,8 +33,6 @@
|
|||
|
||||
#define DEBUG_SIG 0
|
||||
|
||||
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
|
||||
|
||||
asmlinkage long
|
||||
_sys_sigaltstack(const stack_t *uss, stack_t *uoss, struct pt_regs *regs)
|
||||
{
|
||||
|
@ -101,7 +99,6 @@ asmlinkage long _sys_rt_sigreturn(struct pt_regs *regs)
|
|||
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
|
||||
goto badframe;
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
|
||||
if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
|
||||
|
|
|
@ -48,9 +48,6 @@
|
|||
#define DBG(LEVEL, ...)
|
||||
#endif
|
||||
|
||||
|
||||
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
|
||||
|
||||
/* gcc will complain if a pointer is cast to an integer of different
|
||||
* size. If you really need to do this (and we do for an ELF32 user
|
||||
* application in an ELF64 kernel) then you have to do a cast to an
|
||||
|
@ -131,7 +128,6 @@ sys_rt_sigreturn(struct pt_regs *regs, int in_syscall)
|
|||
goto give_sigsegv;
|
||||
}
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
|
||||
/* Good thing we saved the old gr[30], eh? */
|
||||
|
|
|
@ -47,8 +47,6 @@
|
|||
#define DBG(LEVEL, ...)
|
||||
#endif
|
||||
|
||||
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
|
||||
|
||||
inline void
|
||||
sigset_32to64(sigset_t *s64, compat_sigset_t *s32)
|
||||
{
|
||||
|
|
|
@ -57,7 +57,6 @@ void __user * get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
|
|||
*/
|
||||
void restore_sigmask(sigset_t *set)
|
||||
{
|
||||
sigdelsetmask(set, ~_BLOCKABLE);
|
||||
set_current_blocked(set);
|
||||
}
|
||||
|
||||
|
|
|
@ -10,8 +10,6 @@
|
|||
#ifndef _POWERPC_ARCH_SIGNAL_H
|
||||
#define _POWERPC_ARCH_SIGNAL_H
|
||||
|
||||
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
|
||||
|
||||
extern void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags);
|
||||
|
||||
extern void __user * get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
|
||||
|
|
|
@ -32,8 +32,6 @@
|
|||
#include "compat_ptrace.h"
|
||||
#include "entry.h"
|
||||
|
||||
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
|
||||
|
||||
typedef struct
|
||||
{
|
||||
__u8 callee_used_stack[__SIGNAL_FRAMESIZE32];
|
||||
|
@ -364,7 +362,6 @@ asmlinkage long sys32_sigreturn(void)
|
|||
goto badframe;
|
||||
if (__copy_from_user(&set.sig, &frame->sc.oldmask, _SIGMASK_COPY_SIZE32))
|
||||
goto badframe;
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
if (restore_sigregs32(regs, &frame->sregs))
|
||||
goto badframe;
|
||||
|
@ -390,7 +387,6 @@ asmlinkage long sys32_rt_sigreturn(void)
|
|||
goto badframe;
|
||||
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
|
||||
goto badframe;
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
if (restore_sigregs32(regs, &frame->uc.uc_mcontext))
|
||||
goto badframe;
|
||||
|
|
|
@ -33,9 +33,6 @@
|
|||
#include <asm/switch_to.h>
|
||||
#include "entry.h"
|
||||
|
||||
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
|
||||
|
||||
|
||||
typedef struct
|
||||
{
|
||||
__u8 callee_used_stack[__SIGNAL_FRAMESIZE];
|
||||
|
@ -169,7 +166,6 @@ SYSCALL_DEFINE0(sigreturn)
|
|||
goto badframe;
|
||||
if (__copy_from_user(&set.sig, &frame->sc.oldmask, _SIGMASK_COPY_SIZE))
|
||||
goto badframe;
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
if (restore_sigregs(regs, &frame->sregs))
|
||||
goto badframe;
|
||||
|
@ -189,7 +185,6 @@ SYSCALL_DEFINE0(rt_sigreturn)
|
|||
goto badframe;
|
||||
if (__copy_from_user(&set.sig, &frame->uc.uc_sigmask, sizeof(set)))
|
||||
goto badframe;
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
if (restore_sigregs(regs, &frame->uc.uc_mcontext))
|
||||
goto badframe;
|
||||
|
|
|
@ -34,8 +34,6 @@
|
|||
#include <asm/syscalls.h>
|
||||
#include <asm/ucontext.h>
|
||||
|
||||
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
|
||||
|
||||
struct rt_sigframe {
|
||||
u32 rs_ass[4]; /* argument save space */
|
||||
u32 rs_code[2]; /* signal trampoline */
|
||||
|
@ -162,7 +160,6 @@ score_rt_sigreturn(struct pt_regs *regs)
|
|||
if (__copy_from_user(&set, &frame->rs_uc.uc_sigmask, sizeof(set)))
|
||||
goto badframe;
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
|
||||
sig = restore_sigcontext(regs, &frame->rs_uc.uc_mcontext);
|
||||
|
|
|
@ -32,8 +32,6 @@
|
|||
#include <asm/syscalls.h>
|
||||
#include <asm/fpu.h>
|
||||
|
||||
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
|
||||
|
||||
struct fdpic_func_descriptor {
|
||||
unsigned long text;
|
||||
unsigned long GOT;
|
||||
|
@ -226,7 +224,6 @@ asmlinkage int sys_sigreturn(unsigned long r4, unsigned long r5,
|
|||
sizeof(frame->extramask))))
|
||||
goto badframe;
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
|
||||
if (restore_sigcontext(regs, &frame->sc, &r0))
|
||||
|
@ -256,7 +253,6 @@ asmlinkage int sys_rt_sigreturn(unsigned long r4, unsigned long r5,
|
|||
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
|
||||
goto badframe;
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
|
||||
if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &r0))
|
||||
|
|
|
@ -41,8 +41,6 @@
|
|||
|
||||
#define DEBUG_SIG 0
|
||||
|
||||
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
|
||||
|
||||
static void
|
||||
handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
|
||||
struct pt_regs * regs);
|
||||
|
@ -330,7 +328,6 @@ asmlinkage int sys_sigreturn(unsigned long r2, unsigned long r3,
|
|||
sizeof(frame->extramask))))
|
||||
goto badframe;
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
|
||||
if (restore_sigcontext(regs, &frame->sc, &ret))
|
||||
|
@ -363,7 +360,6 @@ asmlinkage int sys_rt_sigreturn(unsigned long r2, unsigned long r3,
|
|||
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
|
||||
goto badframe;
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
|
||||
if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &ret))
|
||||
|
|
|
@ -32,8 +32,6 @@
|
|||
|
||||
#include "sigutil.h"
|
||||
|
||||
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
|
||||
|
||||
/* This magic should be in g_upper[0] for all upper parts
|
||||
* to be valid.
|
||||
*/
|
||||
|
@ -274,7 +272,6 @@ void do_sigreturn32(struct pt_regs *regs)
|
|||
case 2: set.sig[1] = seta[2] + (((long)seta[3]) << 32);
|
||||
case 1: set.sig[0] = seta[0] + (((long)seta[1]) << 32);
|
||||
}
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
return;
|
||||
|
||||
|
@ -376,7 +373,6 @@ asmlinkage void do_rt_sigreturn32(struct pt_regs *regs)
|
|||
case 2: set.sig[1] = seta.sig[2] + (((long)seta.sig[3]) << 32);
|
||||
case 1: set.sig[0] = seta.sig[0] + (((long)seta.sig[1]) << 32);
|
||||
}
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
return;
|
||||
segv:
|
||||
|
|
|
@ -29,8 +29,6 @@
|
|||
|
||||
#include "sigutil.h"
|
||||
|
||||
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
|
||||
|
||||
extern void fpsave(unsigned long *fpregs, unsigned long *fsr,
|
||||
void *fpqueue, unsigned long *fpqdepth);
|
||||
extern void fpload(unsigned long *fpregs, unsigned long *fsr);
|
||||
|
@ -130,7 +128,6 @@ asmlinkage void do_sigreturn(struct pt_regs *regs)
|
|||
if (err)
|
||||
goto segv_and_exit;
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
return;
|
||||
|
||||
|
@ -197,7 +194,6 @@ asmlinkage void do_rt_sigreturn(struct pt_regs *regs)
|
|||
goto segv;
|
||||
}
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
return;
|
||||
segv:
|
||||
|
|
|
@ -38,8 +38,6 @@
|
|||
#include "systbls.h"
|
||||
#include "sigutil.h"
|
||||
|
||||
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
|
||||
|
||||
/* {set, get}context() needed for 64-bit SparcLinux userland. */
|
||||
asmlinkage void sparc64_set_context(struct pt_regs *regs)
|
||||
{
|
||||
|
@ -71,7 +69,6 @@ asmlinkage void sparc64_set_context(struct pt_regs *regs)
|
|||
if (__copy_from_user(&set, &ucp->uc_sigmask, sizeof(sigset_t)))
|
||||
goto do_sigsegv;
|
||||
}
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
}
|
||||
if (test_thread_flag(TIF_32BIT)) {
|
||||
|
@ -315,7 +312,6 @@ void do_rt_sigreturn(struct pt_regs *regs)
|
|||
/* Prevent syscall restart. */
|
||||
pt_regs_clear_syscall(regs);
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
return;
|
||||
segv:
|
||||
|
|
|
@ -118,8 +118,6 @@ struct compat_rt_sigframe {
|
|||
struct compat_ucontext uc;
|
||||
};
|
||||
|
||||
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
|
||||
|
||||
long compat_sys_rt_sigaction(int sig, struct compat_sigaction __user *act,
|
||||
struct compat_sigaction __user *oact,
|
||||
size_t sigsetsize)
|
||||
|
@ -302,7 +300,6 @@ long compat_sys_rt_sigreturn(struct pt_regs *regs)
|
|||
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
|
||||
goto badframe;
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
|
||||
if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
|
||||
|
|
|
@ -37,8 +37,6 @@
|
|||
|
||||
#define DEBUG_SIG 0
|
||||
|
||||
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
|
||||
|
||||
SYSCALL_DEFINE3(sigaltstack, const stack_t __user *, uss,
|
||||
stack_t __user *, uoss, struct pt_regs *, regs)
|
||||
{
|
||||
|
@ -96,7 +94,6 @@ SYSCALL_DEFINE1(rt_sigreturn, struct pt_regs *, regs)
|
|||
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
|
||||
goto badframe;
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
|
||||
if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
|
||||
|
|
|
@ -6,9 +6,6 @@
|
|||
#ifndef __FRAME_KERN_H_
|
||||
#define __FRAME_KERN_H_
|
||||
|
||||
#define _S(nr) (1<<((nr)-1))
|
||||
#define _BLOCKABLE (~(_S(SIGKILL) | _S(SIGSTOP)))
|
||||
|
||||
extern int setup_signal_stack_sc(unsigned long stack_top, int sig,
|
||||
struct k_sigaction *ka,
|
||||
struct pt_regs *regs,
|
||||
|
|
|
@ -15,10 +15,6 @@
|
|||
EXPORT_SYMBOL(block_signals);
|
||||
EXPORT_SYMBOL(unblock_signals);
|
||||
|
||||
#define _S(nr) (1<<((nr)-1))
|
||||
|
||||
#define _BLOCKABLE (~(_S(SIGKILL) | _S(SIGSTOP)))
|
||||
|
||||
/*
|
||||
* OK, we're invoking a handler
|
||||
*/
|
||||
|
|
|
@ -21,8 +21,6 @@
|
|||
#include <asm/cacheflush.h>
|
||||
#include <asm/ucontext.h>
|
||||
|
||||
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
|
||||
|
||||
/*
|
||||
* For UniCore syscalls, we encode the syscall number into the instruction.
|
||||
*/
|
||||
|
@ -61,10 +59,8 @@ static int restore_sigframe(struct pt_regs *regs, struct sigframe __user *sf)
|
|||
int err;
|
||||
|
||||
err = __copy_from_user(&set, &sf->uc.uc_sigmask, sizeof(set));
|
||||
if (err == 0) {
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
if (err == 0)
|
||||
set_current_blocked(&set);
|
||||
}
|
||||
|
||||
err |= __get_user(regs->UCreg_00, &sf->uc.uc_mcontext.regs.UCreg_00);
|
||||
err |= __get_user(regs->UCreg_01, &sf->uc.uc_mcontext.regs.UCreg_01);
|
||||
|
|
|
@ -273,7 +273,6 @@ asmlinkage long sys32_sigreturn(struct pt_regs *regs)
|
|||
sizeof(frame->extramask))))
|
||||
goto badframe;
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
|
||||
if (ia32_restore_sigcontext(regs, &frame->sc, &ax))
|
||||
|
@ -299,7 +298,6 @@ asmlinkage long sys32_rt_sigreturn(struct pt_regs *regs)
|
|||
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
|
||||
goto badframe;
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
|
||||
if (ia32_restore_sigcontext(regs, &frame->uc.uc_mcontext, &ax))
|
||||
|
|
|
@ -7,8 +7,6 @@
|
|||
|
||||
#include <asm/processor-flags.h>
|
||||
|
||||
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
|
||||
|
||||
#define __FIX_EFLAGS (X86_EFLAGS_AC | X86_EFLAGS_OF | \
|
||||
X86_EFLAGS_DF | X86_EFLAGS_TF | X86_EFLAGS_SF | \
|
||||
X86_EFLAGS_ZF | X86_EFLAGS_AF | X86_EFLAGS_PF | \
|
||||
|
|
|
@ -555,7 +555,6 @@ unsigned long sys_sigreturn(struct pt_regs *regs)
|
|||
sizeof(frame->extramask))))
|
||||
goto badframe;
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
|
||||
if (restore_sigcontext(regs, &frame->sc, &ax))
|
||||
|
@ -581,7 +580,6 @@ long sys_rt_sigreturn(struct pt_regs *regs)
|
|||
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
|
||||
goto badframe;
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
|
||||
if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &ax))
|
||||
|
@ -915,7 +913,6 @@ asmlinkage long sys32_x32_rt_sigreturn(struct pt_regs *regs)
|
|||
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
|
||||
goto badframe;
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
|
||||
if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &ax))
|
||||
|
|
|
@ -486,7 +486,6 @@ long sys_sigreturn(struct pt_regs *regs)
|
|||
copy_from_user(&set.sig[1], extramask, sig_size))
|
||||
goto segfault;
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
|
||||
if (copy_sc_from_user(¤t->thread.regs, sc))
|
||||
|
@ -600,7 +599,6 @@ long sys_rt_sigreturn(struct pt_regs *regs)
|
|||
if (copy_from_user(&set, &uc->uc_sigmask, sizeof(set)))
|
||||
goto segfault;
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
|
||||
if (copy_sc_from_user(¤t->thread.regs, &uc->uc_mcontext))
|
||||
|
|
|
@ -30,8 +30,6 @@
|
|||
|
||||
#define DEBUG_SIG 0
|
||||
|
||||
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
|
||||
|
||||
extern struct task_struct *coproc_owners[];
|
||||
|
||||
struct rt_sigframe
|
||||
|
@ -261,7 +259,6 @@ asmlinkage long xtensa_rt_sigreturn(long a0, long a1, long a2, long a3,
|
|||
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
|
||||
goto badframe;
|
||||
|
||||
sigdelsetmask(&set, ~_BLOCKABLE);
|
||||
set_current_blocked(&set);
|
||||
|
||||
if (restore_sigcontext(regs, frame))
|
||||
|
|
|
@ -2210,7 +2210,7 @@ extern int do_sigaltstack(const stack_t __user *, stack_t __user *, unsigned lon
|
|||
static inline void restore_saved_sigmask(void)
|
||||
{
|
||||
if (test_and_clear_restore_sigmask())
|
||||
set_current_blocked(¤t->saved_sigmask);
|
||||
__set_current_blocked(¤t->saved_sigmask);
|
||||
}
|
||||
|
||||
static inline sigset_t *sigmask_to_save(void)
|
||||
|
|
|
@ -250,7 +250,8 @@ extern long do_sigpending(void __user *, unsigned long);
|
|||
extern int do_sigtimedwait(const sigset_t *, siginfo_t *,
|
||||
const struct timespec *);
|
||||
extern int sigprocmask(int, sigset_t *, sigset_t *);
|
||||
extern void set_current_blocked(const sigset_t *);
|
||||
extern void set_current_blocked(sigset_t *);
|
||||
extern void __set_current_blocked(const sigset_t *);
|
||||
extern int show_unhandled_signals;
|
||||
extern int sigsuspend(sigset_t *);
|
||||
|
||||
|
|
|
@ -2524,7 +2524,16 @@ static void __set_task_blocked(struct task_struct *tsk, const sigset_t *newset)
|
|||
* It is wrong to change ->blocked directly, this helper should be used
|
||||
* to ensure the process can't miss a shared signal we are going to block.
|
||||
*/
|
||||
void set_current_blocked(const sigset_t *newset)
|
||||
void set_current_blocked(sigset_t *newset)
|
||||
{
|
||||
struct task_struct *tsk = current;
|
||||
sigdelsetmask(newset, sigmask(SIGKILL) | sigmask(SIGSTOP));
|
||||
spin_lock_irq(&tsk->sighand->siglock);
|
||||
__set_task_blocked(tsk, newset);
|
||||
spin_unlock_irq(&tsk->sighand->siglock);
|
||||
}
|
||||
|
||||
void __set_current_blocked(const sigset_t *newset)
|
||||
{
|
||||
struct task_struct *tsk = current;
|
||||
|
||||
|
@ -2564,7 +2573,7 @@ int sigprocmask(int how, sigset_t *set, sigset_t *oldset)
|
|||
return -EINVAL;
|
||||
}
|
||||
|
||||
set_current_blocked(&newset);
|
||||
__set_current_blocked(&newset);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -3138,7 +3147,7 @@ SYSCALL_DEFINE3(sigprocmask, int, how, old_sigset_t __user *, nset,
|
|||
return -EINVAL;
|
||||
}
|
||||
|
||||
set_current_blocked(&new_blocked);
|
||||
__set_current_blocked(&new_blocked);
|
||||
}
|
||||
|
||||
if (oset) {
|
||||
|
@ -3202,7 +3211,6 @@ SYSCALL_DEFINE1(ssetmask, int, newmask)
|
|||
int old = current->blocked.sig[0];
|
||||
sigset_t newset;
|
||||
|
||||
siginitset(&newset, newmask & ~(sigmask(SIGKILL) | sigmask(SIGSTOP)));
|
||||
set_current_blocked(&newset);
|
||||
|
||||
return old;
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|
@ -3243,8 +3251,6 @@ SYSCALL_DEFINE0(pause)
|
|||
|
||||
int sigsuspend(sigset_t *set)
|
||||
{
|
||||
sigdelsetmask(set, sigmask(SIGKILL)|sigmask(SIGSTOP));
|
||||
|
||||
current->saved_sigmask = current->blocked;
|
||||
set_current_blocked(set);
|
||||
|
||||
|
|
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Ссылка в новой задаче