commit 24f63e2a16efe1719560dda6ee7e4f059e34a2f4 Author: David Goulet dgoulet@ev0ke.net Date: Sat Oct 12 13:41:50 2013 -0400

Fix: undefined syscall values for x86

Reference #11

Signed-off-by: David Goulet dgoulet@ev0ke.net --- src/common/compat.h | 42 ++++++++++++++++++++++++++++++++++++++++++ src/lib/syscall.c | 6 +++--- src/lib/torsocks.h | 5 ----- 3 files changed, 45 insertions(+), 8 deletions(-)

diff --git a/src/common/compat.h b/src/common/compat.h index 18404b2..07c856f 100644 --- a/src/common/compat.h +++ b/src/common/compat.h @@ -43,4 +43,46 @@ void tsocks_mutex_unlock(tsocks_mutex_t *m);

#endif /* __linux__, __darwin__, __FreeBSD__ */

+#if defined(__linux__) + +#if defined(__i386) +#include <asm-generic/unistd.h> +#else +#include <unistd.h> +#endif /* defined __i386 */ + +#include <sys/syscall.h> + +/* + * Some old system requires kernel headers for those values. If they are not + * defined, set them to a non syscall value. Just to be clear, if the value is + * undefined (here -1), tsocks syscall() will DENY the real syscall if catched. + */ +#ifndef __NR_socket +#define __NR_socket -1 +#endif +#ifndef __NR_connect +#define __NR_connect -1 +#endif +#ifndef __NR_close +#define __NR_close -1 +#endif + +#define TSOCKS_NR_SOCKET __NR_socket +#define TSOCKS_NR_CONNECT __NR_connect +#define TSOCKS_NR_CLOSE __NR_close + +#endif /* __linux__ */ + +#if (defined(__FreeBSD__) || defined(__darwin__)) + +#include <sys/syscall.h> +#include <unistd.h> + +#define TSOCKS_NR_SOCKET SYS_socket +#define TSOCKS_NR_CONNECT SYS_connect +#define TSOCKS_NR_CLOSE SYS_close + +#endif /* __FreeBSD__, __darwin__ */ + #endif /* TORSOCKS_COMPAT_H */ diff --git a/src/lib/syscall.c b/src/lib/syscall.c index 0edd460..b06e2e3 100644 --- a/src/lib/syscall.c +++ b/src/lib/syscall.c @@ -80,13 +80,13 @@ LIBC_SYSCALL_RET_TYPE tsocks_syscall(long int __number, va_list args) DBG("[syscall] Syscall libc wrapper number %ld called", __number);

switch (__number) { - case SYS_socket: + case TSOCKS_NR_SOCKET: ret = handle_socket(args); break; - case SYS_connect: + case TSOCKS_NR_CONNECT: ret = handle_connect(args); break; - case SYS_close: + case TSOCKS_NR_CLOSE: ret = handle_close(args); break; default: diff --git a/src/lib/torsocks.h b/src/lib/torsocks.h index 1554abc..4adf532 100644 --- a/src/lib/torsocks.h +++ b/src/lib/torsocks.h @@ -176,8 +176,6 @@ struct hostent **__result, int *__h_errnop #if (defined(__linux__))

#define _GNU_SOURCE -#include <unistd.h> -#include <sys/syscall.h>

/* syscall(2) */ #define LIBC_SYSCALL_NAME syscall @@ -190,9 +188,6 @@ struct hostent **__result, int *__h_errnop

#if (defined(__FreeBSD__) || defined(__darwin__))

-#include <sys/syscall.h> -#include <unistd.h> - /* syscall(2) */ #define LIBC_SYSCALL_NAME syscall #define LIBC_SYSCALL_NAME_STR XSTR(LIBC_SYSCALL_NAME)