sys/syscall_vtt.c


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#include "jove.h"
#include "lib/printf.h"
#include "lib/virtterm.h"
#include "syscall.h"

static int
s_syscall_vtt_write(
        jove_owned_obj_t *vtt,
        size_t payload_bytes,
        void *payload_data)
{
    size_t bytes_needed = sizeof(struct syscall_generic_write);
    CHECK_TOOSMALL(bytes_needed, payload_bytes, "Message is too small for this syscall!");

    struct syscall_generic_write *payload = payload_data;
    bytes_needed += payload->len * 2;
    CHECK_TOOSMALL(bytes_needed, payload_bytes, "Message is too small for write buffer!");

    return vt_write(vtt, payload->data, payload->len);
}

int
_syscall_handle_vtt(syscall_context_t *ctx)
{

    switch(ctx->header->callid) {
        case SYSCALL_VTT_WRITE:
            return s_syscall_vtt_write(ctx->target.obj, ctx->bytes_left, ctx->payload);
        default:
            klogf("vtt object does not support syscall %i\n", ctx->header->callid);
            return -EBADCALL;
    }
}