(
fd: BorrowedFd<'_>,
buf: (*mut u8, usize),
pos: u64,
)
| 45 | |
| 46 | #[inline] |
| 47 | pub(crate) unsafe fn pread( |
| 48 | fd: BorrowedFd<'_>, |
| 49 | buf: (*mut u8, usize), |
| 50 | pos: u64, |
| 51 | ) -> io::Result<usize> { |
| 52 | // <https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/kernel/sys32.c?h=v6.13#n70> |
| 53 | #[cfg(all( |
| 54 | target_pointer_width = "32", |
| 55 | any( |
| 56 | target_arch = "arm", |
| 57 | target_arch = "mips", |
| 58 | target_arch = "mips32r6", |
| 59 | target_arch = "powerpc" |
| 60 | ), |
| 61 | ))] |
| 62 | let r = ret_usize(syscall!( |
| 63 | __NR_pread64, |
| 64 | fd, |
| 65 | buf.0, |
| 66 | pass_usize(buf.1), |
| 67 | zero(), |
| 68 | hi(pos), |
| 69 | lo(pos) |
| 70 | )); |
| 71 | |
| 72 | #[cfg(all( |
| 73 | target_pointer_width = "32", |
| 74 | not(any( |
| 75 | target_arch = "arm", |
| 76 | target_arch = "mips", |
| 77 | target_arch = "mips32r6", |
| 78 | target_arch = "powerpc" |
| 79 | )), |
| 80 | ))] |
| 81 | let r = ret_usize(syscall!( |
| 82 | __NR_pread64, |
| 83 | fd, |
| 84 | buf.0, |
| 85 | pass_usize(buf.1), |
| 86 | hi(pos), |
| 87 | lo(pos) |
| 88 | )); |
| 89 | |
| 90 | #[cfg(target_pointer_width = "64")] |
| 91 | let r = ret_usize(syscall!( |
| 92 | __NR_pread64, |
| 93 | fd, |
| 94 | buf.0, |
| 95 | pass_usize(buf.1), |
| 96 | loff_t_from_u64(pos) |
| 97 | )); |
| 98 | |
| 99 | #[cfg(sanitize_memory)] |
| 100 | if let Ok(len) = r { |
| 101 | crate::msan::unpoison(buf.0, len); |
| 102 | } |
| 103 | |
| 104 | r |
nothing calls this directly
no test coverage detected