diff options
Diffstat (limited to 'libc-bottom-half/cloudlibc/src/libc/unistd/read.c')
-rw-r--r-- | libc-bottom-half/cloudlibc/src/libc/unistd/read.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/libc-bottom-half/cloudlibc/src/libc/unistd/read.c b/libc-bottom-half/cloudlibc/src/libc/unistd/read.c new file mode 100644 index 0000000..1582126 --- /dev/null +++ b/libc-bottom-half/cloudlibc/src/libc/unistd/read.c @@ -0,0 +1,18 @@ +// Copyright (c) 2015-2016 Nuxi, https://nuxi.nl/ +// +// SPDX-License-Identifier: BSD-2-Clause + +#include <wasi/api.h> +#include <errno.h> +#include <unistd.h> + +ssize_t read(int fildes, void *buf, size_t nbyte) { + __wasi_iovec_t iov = {.buf = buf, .buf_len = nbyte}; + size_t bytes_read; + __wasi_errno_t error = __wasi_fd_read(fildes, &iov, 1, &bytes_read); + if (error != 0) { + errno = error == ENOTCAPABLE ? EBADF : error; + return -1; + } + return bytes_read; +} |