From 3b78843ee18a3099196a61c7d07c0e2d24d1fe84 Mon Sep 17 00:00:00 2001 From: vishalbiswas Date: Tue, 17 Jan 2017 10:10:23 +0530 Subject: [PATCH] syscall: Add clone Signed-off-by: vishalbiswas --- src/common/compat.h | 4 ++++ src/lib/syscall.c | 21 +++++++++++++++++++++ 2 files changed, 25 insertions(+) diff --git a/src/common/compat.h b/src/common/compat.h index f490113..bf42f07 100644 --- a/src/common/compat.h +++ b/src/common/compat.h @@ -126,6 +126,9 @@ void tsocks_once(tsocks_once_t *o, void (*init_routine)(void)); #ifndef __NR_fork #define __NR_fork -18 #endif +#ifndef __NR_clone +#define __NR_clone -19 +#endif #define TSOCKS_NR_SOCKET __NR_socket #define TSOCKS_NR_CONNECT __NR_connect @@ -145,6 +148,7 @@ void tsocks_once(tsocks_once_t *o, void (*init_routine)(void)); #define TSOCKS_NR_GETTIMEOFDAY __NR_gettimeofday #define TSOCKS_NR_CLOCK_GETTIME __NR_clock_gettime #define TSOCKS_NR_FORK __NR_fork +#define TSOCKS_NR_CLONE __NR_clone /* * Despite glibc providing wrappers for these calls for a long time diff --git a/src/lib/syscall.c b/src/lib/syscall.c index d0fdaaa..c8a9b46 100644 --- a/src/lib/syscall.c +++ b/src/lib/syscall.c @@ -423,6 +423,24 @@ static LIBC_SYSCALL_RET_TYPE handle_fork(void) { return tsocks_libc_syscall(TSOCKS_NR_FORK); } + +/* + * * Handle clone(2) syscall. + * */ +static LIBC_SYSCALL_RET_TYPE handle_clone(va_list args) +{ + int (*fn)(void*); + void* child_stack; + int flags; + void* arg; + + fn = va_arg(args, __typeof__(fn)); + child_stack = va_arg(args, __typeof__(child_stack)); + flags = va_arg(args, __typeof__(flags)); + arg = va_arg(args, __typeof__(arg)); + + return tsocks_libc_syscall(TSOCKS_NR_CLONE, fn, child_stack, flags, arg); +} #endif /* __linux__ */ /* @@ -541,6 +559,9 @@ LIBC_SYSCALL_RET_TYPE tsocks_syscall(long int number, va_list args) case TSOCKS_NR_FORK: ret = handle_fork(); break; + case TSOCKS_NR_CLONE: + ret = handle_clone(args); + break; #endif /* __linux__ */ default: /* -- 2.11.0