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/*
* Copyright (c) Nokia Corporation, 2007
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Author: Artem B. Bityutskiy
*
* Test volume reference counting - create a volume, open a sysfs file
* belonging to the volume, delete the volume but do not close the file, make
* sure the file cannot be read, close the file, make sure the volume
* disappeard, make sure its sysfs subtree disappeared.
*/
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include "libubi.h"
#define PROGRAM_NAME "rmvol"
#include "common.h"
#include "helpers.h"
#define SYSFS_FILE "/sys/class/ubi/ubi%d_%d/usable_eb_size"
int main(int argc, char * const argv[])
{
int ret, fd;
char fname[sizeof(SYSFS_FILE) + 20];
const char *node;
libubi_t libubi;
struct ubi_dev_info dev_info;
struct ubi_mkvol_request req;
char tmp[100];
if (initial_check(argc, argv))
return 1;
node = argv[1];
libubi = libubi_open();
if (libubi == NULL) {
failed("libubi_open");
return 1;
}
if (ubi_get_dev_info(libubi, node, &dev_info)) {
failed("ubi_get_dev_info");
goto out_libubi;
}
/* Create a small dynamic volume */
req.vol_id = UBI_VOL_NUM_AUTO;
req.alignment = dev_info.min_io_size;
req.bytes = dev_info.leb_size;
req.vol_type = UBI_DYNAMIC_VOLUME;
req.name = "rmvol";
if (ubi_mkvol(libubi, node, &req)) {
failed("ubi_mkvol");
goto out_libubi;
}
/* Open volume-related sysfs file */
sprintf(fname, SYSFS_FILE, dev_info.dev_num, req.vol_id);
fd = open(fname, O_RDONLY);
if (fd == -1) {
errorm("cannot open %s", fname);
failed("open");
goto out_rmvol;
}
/* Remove the volume, but do not close the file */
if (ubi_rmvol(libubi, node, req.vol_id)) {
failed("ubi_rmvol");
perror("ubi_rmvol");
goto out_close;
}
/* Try to read from the file, this should fail */
ret = read(fd, tmp, 100);
if (ret != -1) {
errorm("read returned %d, expected -1", ret);
failed("read");
goto out_close;
}
/* Close the file and try to open it again, should fail */
close(fd);
fd = open(fname, O_RDONLY);
if (fd != -1) {
errorm("opened %s again, open returned %d, expected -1",
fname, fd);
failed("open");
goto out_libubi;
}
libubi_close(libubi);
return 0;
out_rmvol:
ubi_rmvol(libubi, node, req.vol_id);
out_libubi:
libubi_close(libubi);
return 1;
out_close:
close(fd);
libubi_close(libubi);
return 1;
}
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