diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm64/kernel/signal32.c | 45 |
2 files changed, 1 insertions, 45 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 24dce472a77e..1f27c58f44ad 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -210,6 +210,7 @@ config COMPAT select COMPAT_BINFMT_ELF select HAVE_UID16 select OLD_SIGSUSPEND3 + select COMPAT_OLD_SIGACTION help This option enables support for a 32-bit EL0 running under a 64-bit kernel at EL1. AArch32-specific components such as system calls, diff --git a/arch/arm64/kernel/signal32.c b/arch/arm64/kernel/signal32.c index 892b9dfb5517..92ada01f4cd8 100644 --- a/arch/arm64/kernel/signal32.c +++ b/arch/arm64/kernel/signal32.c @@ -28,13 +28,6 @@ #include <asm/uaccess.h> #include <asm/unistd32.h> -struct compat_old_sigaction { - compat_uptr_t sa_handler; - compat_old_sigset_t sa_mask; - compat_ulong_t sa_flags; - compat_uptr_t sa_restorer; -}; - struct compat_sigcontext { /* We always set these two fields to 0 */ compat_ulong_t trap_no; @@ -326,44 +319,6 @@ static int compat_restore_vfp_context(struct compat_vfp_sigframe __user *frame) return err ? -EFAULT : 0; } -asmlinkage int compat_sys_sigaction(int sig, - const struct compat_old_sigaction __user *act, - struct compat_old_sigaction __user *oact) -{ - struct k_sigaction new_ka, old_ka; - int ret; - compat_old_sigset_t mask; - compat_uptr_t handler, restorer; - - if (act) { - if (!access_ok(VERIFY_READ, act, sizeof(*act)) || - __get_user(handler, &act->sa_handler) || - __get_user(restorer, &act->sa_restorer) || - __get_user(new_ka.sa.sa_flags, &act->sa_flags) || - __get_user(mask, &act->sa_mask)) - return -EFAULT; - - new_ka.sa.sa_handler = compat_ptr(handler); - new_ka.sa.sa_restorer = compat_ptr(restorer); - siginitset(&new_ka.sa.sa_mask, mask); - } - - ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); - - if (!ret && oact) { - if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || - __put_user(ptr_to_compat(old_ka.sa.sa_handler), - &oact->sa_handler) || - __put_user(ptr_to_compat(old_ka.sa.sa_restorer), - &oact->sa_restorer) || - __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || - __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask)) - return -EFAULT; - } - - return ret; -} - static int compat_restore_sigframe(struct pt_regs *regs, struct compat_sigframe __user *sf) { |