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| author | Peter Maydell <peter.maydell@linaro.org> | 2011-06-28 12:21:57 +0100 |
|---|---|---|
| committer | Riku Voipio <riku.voipio@linaro.org> | 2011-07-11 16:35:41 +0300 |
| commit | 8f04eeb3c094bf370f131e50b7e3da85d08d518f (patch) | |
| tree | 61b551092d2cfc30c7528bd03d09f2e0c8d3bd04 /linux-user | |
| parent | 163a05a8398bc4b56c7498fa9901422a159168bf (diff) | |
| download | qemu-8f04eeb3c094bf370f131e50b7e3da85d08d518f.zip qemu-8f04eeb3c094bf370f131e50b7e3da85d08d518f.tar.gz qemu-8f04eeb3c094bf370f131e50b7e3da85d08d518f.tar.bz2 | |
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 <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/syscall.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/linux-user/syscall.c b/linux-user/syscall.c index e2f356b..90f6789 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) { |