multiple disk open/closes

[Hollis R Blanchard]

I was having a problem with python bindings last night, but this C code shows
it off as well:

-----
#include <stdio.h>
#include <parted/parted.h>
 
int main(void)
{
    int i=2;
    PedDevice *dev;
    PedDisk *disk;
    ped_init();
 
    while (i--) {
        printf("device... ");
 
        if (NULL == (dev = ped_device_get("/dev/sda"))) {
            goto error0;
        }
 
        printf("disk... ");
 
        if (NULL == (disk = ped_disk_open(dev))) {
            goto error1;
        }
 
        printf("success\n");
 
error2:
        ped_disk_close(disk);
error1:
        ped_device_close(dev);
error0:
        printf("closed\n");
    }
    ped_done();
    return 0;
}
-----

Here's my ouput:

device... disk... success
closed
device... disk... Error: Unable to open /dev/sda - unrecognised disk label.
closed

Apparently the problem has something to do with open_count. During the first
open:
  before open, dev->fd=4 dev->open_count=0
  after open, before read dev->fd=4 dev->open_count=1
During the second open:
  before open, dev->fd=4 dev->open_count=-1
  after open, before read dev->fd=4 dev->open_count=0

This is with kernel 2.2.19 on a ppc, gcc 2.95.3, parted 1.4.10. sda is a
DOS-partitioned disk, but I see the same thing with a Mac disk.

-Hollis