commit b2c1132dfca74a7dc33f0f3c0617008a16421285 Author: Jim Newsome jnewsome@torproject.org Date: Fri Feb 5 13:52:35 2021 -0600
Pass through non-blacklisted syscalls --- src/lib/syscall.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-)
diff --git a/src/lib/syscall.c b/src/lib/syscall.c index f793da7..c941730 100644 --- a/src/lib/syscall.c +++ b/src/lib/syscall.c @@ -470,6 +470,16 @@ static LIBC_SYSCALL_RET_TYPE handle_getdents64(va_list args)
#endif /* __linux__ */
+static LIBC_SYSCALL_RET_TYPE handle_passthrough(long n, va_list args) { + long arg1 = va_arg(args, long); + long arg2 = va_arg(args, long); + long arg3 = va_arg(args, long); + long arg4 = va_arg(args, long); + long arg5 = va_arg(args, long); + long arg6 = va_arg(args, long); + return tsocks_libc_syscall(n, arg1, arg2, arg3, arg4, arg5, arg6); +} + /* * Torsocks call for syscall(2) */ @@ -597,14 +607,7 @@ LIBC_SYSCALL_RET_TYPE tsocks_syscall(long int number, va_list args) break; #endif /* __linux__ */ default: - /* - * Because of the design of syscall(), we can't pass a va_list to it so - * we are constraint to use a whitelist scheme and denying the rest. - */ - WARN("[syscall] Unsupported syscall number %ld. Denying the call", - number); - ret = -1; - errno = ENOSYS; + ret = handle_passthrough(number, args); break; }
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