Function ff_read

lib/ff_syscall_wrapper.c:1072–1098

}

ssize_t
ff_read(int fd, void *buf, size_t nbytes)
{
    struct uio auio;
    struct iovec aiov;
    int rc;

    if (nbytes > INT_MAX) {
        rc = EINVAL;
        goto kern_fail;
    }

    aiov.iov_base = buf;
    aiov.iov_len = nbytes;
    auio.uio_iov = &aiov;
    auio.uio_iovcnt = 1;
    auio.uio_resid = nbytes;
    auio.uio_segflg = UIO_SYSSPACE;
    if ((rc = kern_readv(curthread, fd, &auio)))
        goto kern_fail;
    rc = curthread->td_retval[0];

    return (rc);
kern_fail:
    ff_os_errno(rc);
    return (-1);
}

ssize_t
ff_readv(int fd, const struct iovec *iov, int iovcnt)