286         pub rm_so: ssize_t,
287         pub rm_eo: ssize_t,
3509     ) -> ssize_t;  in recvfrom()  argument
3519     pub fn preadv(fd: c_int, iov: *const crate::iovec, count: c_int, offset: off_t) -> ssize_t;  in preadv()  argument
3520     pub fn pwritev(fd: c_int, iov: *const crate::iovec, count: c_int, offset: off_t) -> ssize_t;  in pwritev()  argument
3528     ) -> ssize_t;  in process_vm_readv()  argument
3536     ) -> ssize_t;  in process_vm_writev()  argument
3565     ) -> ssize_t;  in getxattr()  argument
3571     ) -> ssize_t;  in lgetxattr()  argument
3577     ) -> ssize_t;  in fgetxattr()  argument
3599     pub fn listxattr(path: *const c_char, list: *mut c_char, size: size_t) -> ssize_t;  in listxattr()  argument
3600     pub fn llistxattr(path: *const c_char, list: *mut c_char, size: size_t) -> ssize_t;  in llistxattr()  argument
3601     pub fn flistxattr(filedes: c_int, list: *mut c_char, size: size_t) -> ssize_t;  in flistxattr()  argument
3642     pub fn tee(fd_in: c_int, fd_out: c_int, len: size_t, flags: c_uint) -> ssize_t;  in tee()  argument
3651     ) -> ssize_t;  in splice()  argument
3662         -> ssize_t;  in vmsplice()  argument
3748     pub fn sendfile(out_fd: c_int, in_fd: c_int, offset: *mut off_t, count: size_t) -> ssize_t;  in sendfile()  argument
3749     pub fn sendfile64(out_fd: c_int, in_fd: c_int, offset: *mut off64_t, count: size_t) -> ssize_t;  in sendfile64()  argument
3865     pub fn getrandom(buf: *mut c_void, buflen: size_t, flags: c_uint) -> ssize_t;  in getrandom()  argument