From 8f04eeb3c094bf370f131e50b7e3da85d08d518f Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Tue, 28 Jun 2011 12:21:57 +0100 Subject: [PATCH] linux-user/syscall.c: Enforce pselect6 sigset size restrictions Enforce the same restriction on the size of the sigset passed to pselect6 as the Linux kernel does. This is both correct and silences a gcc 4.6 warning about a write-only variable. Signed-off-by: Peter Maydell Signed-off-by: Riku Voipio --- linux-user/syscall.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index e2f356bb96..90f6789e5f 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -5699,6 +5699,11 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, if (arg_sigset) { sig.set = &set; + if (arg_sigsize != sizeof(*target_sigset)) { + /* Like the kernel, we enforce correct size sigsets */ + ret = -TARGET_EINVAL; + goto fail; + } target_sigset = lock_user(VERIFY_READ, arg_sigset, sizeof(*target_sigset), 1); if (!target_sigset) { -- 2.30.2