From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:36829) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bAdZC-00046H-HC for qemu-devel@nongnu.org; Wed, 08 Jun 2016 09:30:47 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bAdZA-0005g5-GF for qemu-devel@nongnu.org; Wed, 08 Jun 2016 09:30:41 -0400 Received: from mail-lf0-x230.google.com ([2a00:1450:4010:c07::230]:33839) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bAdZA-0005fN-8h for qemu-devel@nongnu.org; Wed, 08 Jun 2016 09:30:40 -0400 Received: by mail-lf0-x230.google.com with SMTP id s186so5868650lfs.1 for ; Wed, 08 Jun 2016 06:30:40 -0700 (PDT) From: riku.voipio@linaro.org Date: Wed, 8 Jun 2016 16:29:51 +0300 Message-Id: In-Reply-To: References: Subject: [Qemu-devel] [PULL 10/44] linux-user: Define macro for size of host kernel sigset_t List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Peter Maydell From: Peter Maydell Some host syscalls take an argument specifying the size of a host kernel's sigset_t (which isn't necessarily the same as that of the host libc's type of that name). Instead of hardcoding _NSIG / 8 where we do this, define and use a SIGSET_T_SIZE macro. Signed-off-by: Peter Maydell Reviewed-by: Laurent Vivier Signed-off-by: Riku Voipio --- linux-user/syscall.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 9cc9a35..d2749a6 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -124,6 +124,10 @@ int __clone2(int (*fn)(void *), void *child_stack_base, #define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct linux_dirent [2]) #define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct linux_dirent [2]) +/* This is the size of the host kernel's sigset_t, needed where we make + * direct system calls that take a sigset_t pointer and a size. + */ +#define SIGSET_T_SIZE (_NSIG / 8) #undef _syscall0 #undef _syscall1 @@ -7862,7 +7866,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, /* Extract the two packed args for the sigset */ if (arg6) { sig_ptr = &sig; - sig.size = _NSIG / 8; + sig.size = SIGSET_T_SIZE; arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1); if (!arg7) { @@ -8916,7 +8920,8 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, set = NULL; } - ret = get_errno(sys_ppoll(pfd, nfds, timeout_ts, set, _NSIG/8)); + ret = get_errno(sys_ppoll(pfd, nfds, timeout_ts, + set, SIGSET_T_SIZE)); if (!is_error(ret) && arg3) { host_to_target_timespec(arg3, timeout_ts); -- 2.1.4