commit dc1d6ae5639a84103a1b067775238f33b4590533 Author: Yawning Angel <yawning@schwanenlied.me> Date: Sat Sep 30 07:09:13 2017 +0000 Bug 23715: Support memfd_create(2). Enough things use this now, that the syscall(2) wrapper should support it, since glibc doesn't provide a wrapper for it, and the documentation says to invoke it using syscall(2). --- src/common/compat.h | 4 ++++ src/lib/syscall.c | 17 +++++++++++++++++ 2 files changed, 21 insertions(+) diff --git a/src/common/compat.h b/src/common/compat.h index f490113..a9b73c2 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_memfd_create +#define __NR_memfd_create -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_MEMFD_CREATE __NR_memfd_create /* * Despite glibc providing wrappers for these calls for a long time diff --git a/src/lib/syscall.c b/src/lib/syscall.c index 41cba28..7fba580 100644 --- a/src/lib/syscall.c +++ b/src/lib/syscall.c @@ -423,6 +423,20 @@ static LIBC_SYSCALL_RET_TYPE handle_fork(void) { return tsocks_libc_syscall(TSOCKS_NR_FORK); } + +/* + * Handle memfd_create(2) syscall. + */ +static LIBC_SYSCALL_RET_TYPE handle_memfd_create(va_list args) +{ + const char *name; + unsigned int flags; + + name = va_arg(args, __typeof__(name)); + flags = va_arg(args, __typeof__(flags)); + + return tsocks_libc_syscall(TSOCKS_NR_MEMFD_CREATE, name, flags); +} #endif /* __linux__ */ /* @@ -541,6 +555,9 @@ LIBC_SYSCALL_RET_TYPE tsocks_syscall(long int number, va_list args) case TSOCKS_NR_FORK: ret = handle_fork(); break; + case TSOCKS_NR_MEMFD_CREATE: + ret = handle_memfd_create(args); + break; #endif /* __linux__ */ default: /*