#include <magenta/object.h>
#include <magenta/bootstrap.h>
#include <magenta/errors.h>
#include <unistd.h>
#include <errno.h>
#include <mio/fs.h>

int open(const char *pathname, int flags, ...)
{
    int ret = mio_open(pathname, flags);
    if (ret < 0) {
        __set_errno(-ret);
        return -1;
    }

    __set_errno(0);
    return ret;
}

int openat(int dirfd, const char *pathname, int flags, ...)
{
    int ret = mio_openat(dirfd, pathname, flags);
    if (ret < 0) {
        __set_errno(-ret);
        return -1;
    }

    __set_errno(0);
    return ret;
}

ssize_t read(int fd, void *buf, size_t count)
{
    ssize_t ret = mio_read(fd, buf, count);
    if (ret < 0) {
        __set_errno(-(int)ret);
        return -1;
    }

    __set_errno(0);
    return ret;
}

ssize_t write(int fd, const void *buf, size_t count)
{
    ssize_t ret = mio_write(fd, buf, count);
    if (ret < 0) {
        __set_errno(-(int)ret);
        return -1;
    }

    __set_errno(0);
    return ret;
}

int close(int fd)
{
    int ret = mio_close(fd);
    if (ret < 0) {
        __set_errno(-ret);
        return -1;
    }

    __set_errno(0);
    return ret;
}

pid_t getpid(void)
{
    mx_info_task_t task_info;
    mx_status_t status = mx_object_get_info(
            mx_bootstrap_handle_get(MX_B_TASK_SELF),
            MX_INFO_TASK,
            &task_info, sizeof task_info);
    return status == MX_OK ? task_info.leader_id : (pid_t)-1;
}

pid_t gettid(void)
{
    mx_info_task_t task_info;
    mx_status_t status = mx_object_get_info(
            mx_bootstrap_handle_get(MX_B_TASK_SELF),
            MX_INFO_TASK,
            &task_info, sizeof task_info);
    return status == MX_OK ? task_info.id : (pid_t)-1;
}