diff options
Diffstat (limited to 'vendor/rustix/src/backend/libc/rand/syscalls.rs')
| -rw-r--r-- | vendor/rustix/src/backend/libc/rand/syscalls.rs | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/vendor/rustix/src/backend/libc/rand/syscalls.rs b/vendor/rustix/src/backend/libc/rand/syscalls.rs new file mode 100644 index 00000000..ce17c6aa --- /dev/null +++ b/vendor/rustix/src/backend/libc/rand/syscalls.rs @@ -0,0 +1,14 @@ +//! libc syscalls supporting `rustix::rand`. + +#[cfg(linux_kernel)] +use {crate::backend::c, crate::backend::conv::ret_usize, crate::io, crate::rand::GetRandomFlags}; + +#[cfg(linux_kernel)] +pub(crate) unsafe fn getrandom(buf: (*mut u8, usize), flags: GetRandomFlags) -> io::Result<usize> { + // `getrandom` wasn't supported in glibc until 2.25. + weak_or_syscall! { + fn getrandom(buf: *mut c::c_void, buflen: c::size_t, flags: c::c_uint) via SYS_getrandom -> c::ssize_t + } + + ret_usize(getrandom(buf.0.cast(), buf.1, flags.bits())) +} |