41 pub(super) fn ret(raw: c::c_int) -> io::Result<()> {  in ret()
42     if raw == 0 {  in ret()
50 pub(super) fn syscall_ret(raw: c::c_long) -> io::Result<()> {  in syscall_ret()
51     if raw == 0 {  in syscall_ret()
59 pub(super) fn nonnegative_ret(raw: c::c_int) -> io::Result<()> {  in nonnegative_ret()
60     if raw >= 0 {  in nonnegative_ret()
68 pub(super) unsafe fn ret_infallible(raw: c::c_int) {  in ret_infallible()
69     debug_assert_eq!(raw, 0, "unexpected error: {:?}", io::Errno::last_os_error());  in ret_infallible()
73 pub(super) fn ret_c_int(raw: c::c_int) -> io::Result<c::c_int> {  in ret_c_int()
74     if raw == -1 {  in ret_c_int()
77         Ok(raw)  in ret_c_int()
82 pub(super) fn ret_u32(raw: c::c_int) -> io::Result<u32> {  in ret_u32()
83     if raw == -1 {  in ret_u32()
86         Ok(raw as u32)  in ret_u32()
91 pub(super) fn ret_ssize_t(raw: c::ssize_t) -> io::Result<c::ssize_t> {  in ret_ssize_t()
92     if raw == -1 {  in ret_ssize_t()
95         Ok(raw)  in ret_ssize_t()
100 pub(super) fn syscall_ret_ssize_t(raw: c::c_long) -> io::Result<c::ssize_t> {  in syscall_ret_ssize_t()
101     if raw == -1 {  in syscall_ret_ssize_t()
104         Ok(raw as c::ssize_t)  in syscall_ret_ssize_t()
110 pub(super) fn syscall_ret_u32(raw: c::c_long) -> io::Result<u32> {  in syscall_ret_u32()
111     if raw == -1 {  in syscall_ret_u32()
114         let r32 = raw as u32;  in syscall_ret_u32()
116         // Converting `raw` to `u32` should be lossless.  in syscall_ret_u32()
117         debug_assert_eq!(r32 as c::c_long, raw);  in syscall_ret_u32()
126 pub(super) fn ret_off_t(raw: libc_off_t) -> io::Result<libc_off_t> {  in ret_off_t()
127     if raw == -1 {  in ret_off_t()
130         Ok(raw)  in ret_off_t()
136 pub(super) fn ret_pid_t(raw: c::pid_t) -> io::Result<c::pid_t> {  in ret_pid_t()
137     if raw == -1 {  in ret_pid_t()
140         Ok(raw)  in ret_pid_t()
151 pub(super) unsafe fn ret_owned_fd(raw: LibcFd) -> io::Result<OwnedFd> {  in ret_owned_fd()
152     if raw == !0 {  in ret_owned_fd()
155         Ok(OwnedFd::from_raw_fd(raw as RawFd))  in ret_owned_fd()
160 pub(super) fn ret_discarded_fd(raw: LibcFd) -> io::Result<()> {  in ret_discarded_fd()
161     if raw == !0 {  in ret_discarded_fd()
169 pub(super) fn ret_discarded_char_ptr(raw: *mut c::c_char) -> io::Result<()> {  in ret_discarded_char_ptr()
170     if raw.is_null() {  in ret_discarded_char_ptr()
185 pub(super) unsafe fn syscall_ret_owned_fd(raw: c::c_long) -> io::Result<OwnedFd> {  in syscall_ret_owned_fd()
186     if raw == -1 {  in syscall_ret_owned_fd()
189         Ok(OwnedFd::from_raw_fd(raw as RawFd))  in syscall_ret_owned_fd()