diff options
Diffstat (limited to 'kernel/tests/include/lapi/rt_sigaction.h')
| -rw-r--r-- | kernel/tests/include/lapi/rt_sigaction.h | 245 |
1 files changed, 0 insertions, 245 deletions
diff --git a/kernel/tests/include/lapi/rt_sigaction.h b/kernel/tests/include/lapi/rt_sigaction.h deleted file mode 100644 index 3af9136..0000000 --- a/kernel/tests/include/lapi/rt_sigaction.h +++ /dev/null @@ -1,245 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * Copyright (c) 2009 Cisco Systems, Inc. All Rights Reserved. - * Copyright (c) 2009 FUJITSU LIMITED. All Rights Reserved. - * Author: Liu Bo <liubo2009@cn.fujitsu.com> - * Author: Ngie Cooper <yaneurabeya@gmail.com> - */ - -#ifndef LTP_RT_SIGACTION_H -#define LTP_RT_SIGACTION_H - -#include "ltp_signal.h" - -#define INVAL_SA_PTR ((void *)-1) - -#if defined(__mips__) -struct kernel_sigaction { - unsigned int sa_flags; - void (* k_sa_handler)(int); - sigset_t sa_mask; -}; -#else -struct kernel_sigaction { - void (* k_sa_handler)(int); - unsigned long sa_flags; - void (*sa_restorer) (void); - sigset_t sa_mask; -}; -#endif - -/* This macro marks if (struct sigaction) has .sa_restorer member */ -#if !defined(__ia64__) && !defined(__alpha__) && !defined(__hppa__) && !defined(__mips__) -# define HAVE_SA_RESTORER -#endif - -#ifdef __x86_64__ - -/* - * From asm/signal.h -- this value isn't exported anywhere outside of glibc and - * asm/signal.h and is only required for the rt_sig* function family because - * sigaction(2), et all, appends this if necessary to - * (struct sigaction).sa_flags. HEH. - * - * I do #undef though, just in case... - * - * Also, from .../arch/x86/kernel/signal.c:448 for v2.6.30 (something or - * other): - * - * x86-64 should always use SA_RESTORER. - * - * -- thus SA_RESTORER must always be defined along with - * (struct sigaction).sa_restorer for this architecture. - */ -#undef SA_RESTORER -#define SA_RESTORER 0x04000000 - -void (*restore_rt)(void); - -static void handler_h(int signal) -{ - return; -} - -/* Setup an initial signal handler for signal number = sig for x86_64. */ -static inline int sig_initial(int sig) -{ - int ret_code = -1; - struct sigaction act, oact; - - act.sa_handler = handler_h; - act.sa_flags = 0; - /* Clear out the signal set. */ - if (sigemptyset(&act.sa_mask) < 0) { - /* Add the signal to the mask set. */ - } else if (sigaddset(&act.sa_mask, sig) < 0) { - /* Set act.sa_restorer via syscall(2) */ - } else if (sigaction(sig, &act, &oact) < 0) { - /* Copy oact.sa_restorer via syscall(2) */ - } else if (sigaction(sig, &act, &oact) < 0) { - /* And voila -- we just tricked the kernel into giving us our - * restorer function! */ - } else { - restore_rt = oact.sa_restorer; - ret_code = 0; - } - - return ret_code; -} - -#endif /* __x86_64__ */ - -#ifdef __sparc__ -# if defined __arch64__ || defined __sparcv9 - -/* - * Based on glibc/sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c - */ - -extern char *__rt_sig_stub; - -static void __attribute__((used)) __rt_sigreturn_stub(void) -{ - __asm__ ("__rt_sig_stub: mov %0, %%g1\n\t" - "ta 0x6d\n\t" - : /* no outputs */ - : "i" (__NR_rt_sigreturn)); -} - -# else /* sparc32 */ - -/* - * Based on glibc/sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c - */ - -extern char *__rt_sig_stub, *__sig_stub; - -static void __attribute__((used)) __rt_sigreturn_stub(void) -{ - __asm__ ("__rt_sig_stub: mov %0, %%g1\n\t" - "ta 0x10\n\t" - : /* no outputs */ - : "i" (__NR_rt_sigreturn)); -} - -static void __attribute__((used)) __sigreturn_stub(void) -{ - __asm__ ("__sig_stub: mov %0, %%g1\n\t" - "ta 0x10\n\t" - : /* no outputs */ - : "i" (__NR_sigreturn)); -} - -# endif -#endif /* __sparc__ */ - -#ifdef __arc__ - -#undef SA_RESTORER -#define SA_RESTORER 0x04000000 - -/* - * based on uClibc/libc/sysdeps/linux/arc/sigaction.c - */ -static void -__attribute__ ((optimize("Os"))) __attribute__((used)) restore_rt(void) -{ - __asm__ ( - "mov r8, %0 \n\t" -#ifdef __ARCHS__ - "trap_s 0 \n\t" -#else - "trap0 \n\t" -#endif - : /* no outputs */ - : "i" (__NR_rt_sigreturn) - : "r8"); -} -#endif - -#ifdef TST_TEST_H__ -# define TST_SYSCALL tst_syscall -#else -# define TST_SYSCALL ltp_syscall -#endif - -/* This is a wrapper for __NR_rt_sigaction syscall. - * act/oact values of INVAL_SA_PTR is used to pass - * an invalid pointer to syscall(__NR_rt_sigaction) - * - * Based on glibc/sysdeps/unix/sysv/linux/{...}/sigaction.c - */ - -static int ltp_rt_sigaction(int signum, const struct sigaction *act, - struct sigaction *oact, size_t sigsetsize) -{ - int ret; - struct kernel_sigaction kact, koact; - struct kernel_sigaction *kact_p = NULL; - struct kernel_sigaction *koact_p = NULL; - - if (act == INVAL_SA_PTR) { - kact_p = INVAL_SA_PTR; - } else if (act) { - kact.k_sa_handler = act->sa_handler; - memcpy(&kact.sa_mask, &act->sa_mask, sizeof(sigset_t)); - kact.sa_flags = act->sa_flags; -#ifndef __mips__ - kact.sa_restorer = NULL; -#endif - kact_p = &kact; - } - - if (oact == INVAL_SA_PTR) - koact_p = INVAL_SA_PTR; - else if (oact) - koact_p = &koact; - -#ifdef __x86_64__ - sig_initial(signum); -#endif - -#if defined __x86_64__ || defined __arc__ - kact.sa_flags |= SA_RESTORER; - kact.sa_restorer = restore_rt; -#endif - -#ifdef __sparc__ - unsigned long stub = 0; -# if defined __arch64__ || defined __sparcv9 - stub = ((unsigned long) &__rt_sig_stub) - 8; -# else /* sparc32 */ - if ((kact.sa_flags & SA_SIGINFO) != 0) - stub = ((unsigned long) &__rt_sig_stub) - 8; - else - stub = ((unsigned long) &__sig_stub) - 8; -# endif -#endif - - -#ifdef __sparc__ - ret = TST_SYSCALL(__NR_rt_sigaction, signum, - kact_p, koact_p, - stub, sigsetsize); -#else - ret = TST_SYSCALL(__NR_rt_sigaction, signum, - kact_p, koact_p, - sigsetsize); -#endif - - if (ret >= 0) { - if (oact && (oact != INVAL_SA_PTR)) { - oact->sa_handler = koact.k_sa_handler; - memcpy(&oact->sa_mask, &koact.sa_mask, - sizeof(sigset_t)); - oact->sa_flags = koact.sa_flags; -#ifdef HAVE_SA_RESTORER - oact->sa_restorer = koact.sa_restorer; -#endif - } - } - - return ret; -} - -#endif /* LTP_RT_SIGACTION_H */ |