diff options
| -rwxr-xr-x | challenge-029/daniel-mita/perl6/ch-2.p6 | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/challenge-029/daniel-mita/perl6/ch-2.p6 b/challenge-029/daniel-mita/perl6/ch-2.p6 new file mode 100755 index 0000000000..9a6365be70 --- /dev/null +++ b/challenge-029/daniel-mita/perl6/ch-2.p6 @@ -0,0 +1,22 @@ +#!/usr/bin/env perl6 +use v6; +use NativeCall; + +sub getrandom ( Buf, size_t, uint32 --> ssize_t ) is native {*} + +#| http://man7.org/linux/man-pages/man2/getrandom.2.html +sub MAIN ( + UInt $bytes = 8, #= Number of random bytes (defaults to 8) + UInt $flags = 0, +) { + given Buf.allocate($bytes) { + given .&getrandom: $bytes, $flags { + when -1 { + die sub strerror( int32 --> Str ) is native {*}( + cglobal( ('c', v6), 'errno', int32 ) ); + } + when * < $bytes { die 'got fewer bytes than requested' } + } + .say; + } +} |
