diff options
Diffstat (limited to 'src/internal')
| -rw-r--r-- | src/internal/syscall/unix/getrandom.go | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/internal/syscall/unix/getrandom.go b/src/internal/syscall/unix/getrandom.go index 4270898b7e..2dbe19887c 100644 --- a/src/internal/syscall/unix/getrandom.go +++ b/src/internal/syscall/unix/getrandom.go @@ -12,6 +12,9 @@ import ( "unsafe" ) +//go:linkname vgetrandom runtime.vgetrandom +func vgetrandom(p []byte, flags uint32) (ret int, supported bool) + var getrandomUnsupported atomic.Bool // GetRandomFlag is a flag supported by the getrandom system call. @@ -19,6 +22,13 @@ type GetRandomFlag uintptr // GetRandom calls the getrandom system call. func GetRandom(p []byte, flags GetRandomFlag) (n int, err error) { + ret, supported := vgetrandom(p, uint32(flags)) + if supported { + if ret < 0 { + return 0, syscall.Errno(-ret) + } + return ret, nil + } if getrandomUnsupported.Load() { return 0, syscall.ENOSYS } |