diff options
Diffstat (limited to 'sysdeps/unix/sysdep.h')
| -rw-r--r-- | sysdeps/unix/sysdep.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/sysdeps/unix/sysdep.h b/sysdeps/unix/sysdep.h index aac93039de..29c39618c2 100644 --- a/sysdeps/unix/sysdep.h +++ b/sysdeps/unix/sysdep.h @@ -102,6 +102,22 @@ sc_ret; \ }) +/* Issue a syscall defined by syscall number plus any other argument + required. Any error will be returned unmodified (including errno). */ +#define INTERNAL_SYSCALL_CANCEL(...) \ + ({ \ + long int sc_ret; \ + if (SINGLE_THREAD_P) \ + sc_ret = INTERNAL_SYSCALL_CALL (__VA_ARGS__); \ + else \ + { \ + int sc_cancel_oldtype = LIBC_CANCEL_ASYNC (); \ + sc_ret = INTERNAL_SYSCALL_CALL (__VA_ARGS__); \ + LIBC_CANCEL_RESET (sc_cancel_oldtype); \ + } \ + sc_ret; \ + }) + /* Machine-dependent sysdep.h files are expected to define the macro PSEUDO (function_name, syscall_name) to emit assembly code to define the C-callable function FUNCTION_NAME to do system call SYSCALL_NAME. |