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