Function msh_exec_module

components/finsh/msh.c:254–321

Return 0 on module executed. Other value indicate error. */

/* Return 0 on module executed. Other value indicate error.
 */
int msh_exec_module(const char *cmd_line, int size)
{
    int ret;
    int fd = -1;
    char *pg_name;
    int length, cmd_length = 0;

    if (size == 0)
        return -RT_ERROR;
    /* get the length of command0 */
    while ((cmd_line[cmd_length] != ' ' && cmd_line[cmd_length] != '\t') && cmd_length < size)
        cmd_length ++;

    /* get name length */
    length = cmd_length + 32;

    /* allocate program name memory */
    pg_name = (char *) rt_malloc(length + 3);
    if (pg_name == RT_NULL)
        return -RT_ENOMEM;

    /* copy command0 */
    rt_memcpy(pg_name, cmd_line, cmd_length);
    pg_name[cmd_length] = '\0';

    if (strstr(pg_name, ".mo") != RT_NULL || strstr(pg_name, ".MO") != RT_NULL)
    {
        /* try to open program */
        fd = open(pg_name, O_RDONLY, 0);

        /* search in /bin path */
        if (fd < 0)
        {
            rt_snprintf(pg_name, length - 1, "/bin/%.*s", cmd_length, cmd_line);
            fd = open(pg_name, O_RDONLY, 0);
        }
    }
    else
    {
        /* add .mo and open program */

        /* try to open program */
        strcat(pg_name, ".mo");
        fd = open(pg_name, O_RDONLY, 0);

        /* search in /bin path */
        if (fd < 0)
        {
            rt_snprintf(pg_name, length - 1, "/bin/%.*s.mo", cmd_length, cmd_line);
            fd = open(pg_name, O_RDONLY, 0);
        }
    }

    if (fd >= 0)
    {
        /* found program */
        close(fd);
        dlmodule_exec(pg_name, cmd_line, size);