#include <stdio.h>
#include <stdlib.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <getopt.h>
#include <signal.h>

/////////////////////////////////////////////////////////////////////////////////////////
/*FLAGS FROM KERNEL*/

//#define MS_RDONLY	 1	/* Mount read-only */
//#define MS_NOSUID	 2	/* Ignore suid and sgid bits */
//#define MS_NODEV	 4	/* Disallow access to device special files */
//#define MS_NOEXEC	 8	/* Disallow program execution */
//#define MS_SYNCHRONOUS	16	/* Writes are synced at once */
//#define MS_REMOUNT	32	/* Alter flags of a mounted FS */
//#define MS_MANDLOCK	64	/* Allow mandatory locks on an FS */
//#define MS_DIRSYNC	128	/* Directory modifications are synchronous */
//#define MS_NOATIME	1024	/* Do not update access times. */
//#define MS_NODIRATIME	2048	/* Do not update directory access times */
//#define MS_BIND		4096
//#define MS_MOVE		8192
//#define MS_REC		16384
//#define MS_VERBOSE	32768	/* War is peace. Verbosity is silence.
//				   MS_VERBOSE is deprecated. */
//#define MS_SILENT	32768
//#define MS_POSIXACL	(1<<16)	/* VFS does not apply the umask */
//#define MS_UNBINDABLE	(1<<17)	/* change to unbindable */
//#define MS_PRIVATE	(1<<18)	/* change to private */
//#define MS_SLAVE	(1<<19)	/* change to slave */
//#define MS_SHARED	(1<<20)	/* change to shared */
//#define MS_RELATIME	(1<<21)	/* Update atime relative to mtime/ctime. */
//#define MS_KERNMOUNT	(1<<22) /* this is a kern_mount call */
//#define MS_I_VERSION	(1<<23) /* Update inode I_version field */
//#define MS_STRICTATIME	(1<<24) /* Always perform atime updates */
//#define MS_LAZYTIME	(1<<25) /* Update the on-disk [acm]times lazily */


typedef struct {
    int f_output; //show statistics of pipe
    int f_stopzero; //stop if 0 bytes in input
    int f_nowriteout; // dont write to output
    int f_graphmode; //show graph
} mount_params;

static mount_params g_params;

void helper(char *progname)
{
    printf("Usage: %s [OPTS]\n\n"
        "Version: 0.0.1 \n"
        "\n"
        , progname);
}

void sig_handler(int signo)
{
    switch(signo)
    {
        case SIGINT:
            //printf("Catch SIGINT Exit\n");
            //if (g_params.f_output)
            //{
            //    printf("Data in %d bytes Data out %d bytes",g_stats.cnt_in,g_stats.cnt_out);
            //}
        default:
            printf("Unknown signal %d\n",signo);
    }
    exit(0);
}

int smount(const char *source, const char *target,
                 const char *filesystemtype, unsigned long mountflags,
                 const void *data);

int main(int argc, char **argv)
{
    int c;

    printf("One big real mount\n");

    if (signal(SIGINT,sig_handler) == SIG_ERR)
    {
        printf("cannot register signal handler\n");
        exit(1);
    }
    
    //process arguments
    while ((c = getopt(argc, argv, "osng")) != -1)
    {
        switch (c)
        {
            case 'v':
                //g_params.f_output = 1;
                break;
            
            default:
                helper(argv[0]);
                exit(1);
        }
    }

    return 0;
}

int smount(
    const char *source, 
    const char *target,
    const char *filesystemtype,
    unsigned long mountflags,
    const void *data)
{

    return 0;
}