/*
* Deletes loop device
*/
int mnt_context_delete_loopdev(struct libmnt_context *cxt)
{
const char *src;
int rc;
assert(cxt);
assert(cxt->fs);
if (!cxt)
return -EINVAL;
src = mnt_fs_get_srcpath(cxt->fs);
if (!src)
return -EINVAL;
if (cxt->loopdev_fd > -1)
close(cxt->loopdev_fd);
rc = loopdev_delete(src);
cxt->flags &= ~MNT_FL_LOOPDEV_READY;
cxt->loopdev_fd = -1;
DBG(CXT, ul_debugobj(cxt, "loopdev deleted [rc=%d]", rc));
return rc;
}
int main(int argc, char *argv[])
{
int dbg;
if (argc < 2)
goto usage;
dbg = getenv("LOOPDEV_DEBUG") == NULL ? 0 : 1;
if (argc == 3 && strcmp(argv[1], "--info") == 0) {
printf("---sysfs & ioctl:---\n");
test_loop_info(argv[2], 0, dbg);
printf("---sysfs only:---\n");
test_loop_info(argv[2], LOOPDEV_FL_NOIOCTL, dbg);
printf("---ioctl only:---\n");
test_loop_info(argv[2], LOOPDEV_FL_NOSYSFS, dbg);
} else if (argc == 2 && strcmp(argv[1], "--used") == 0) {
printf("---all used devices---\n");
test_loop_scan(LOOPITER_FL_USED, dbg);
} else if (argc == 2 && strcmp(argv[1], "--free") == 0) {
printf("---all free devices---\n");
test_loop_scan(LOOPITER_FL_FREE, dbg);
} else if (argc >= 3 && strcmp(argv[1], "--setup") == 0) {
test_loop_setup(argv[2], argv[3], dbg);
} else if (argc == 3 && strcmp(argv[1], "--delete") == 0) {
if (loopdev_delete(argv[2]))
errx(EXIT_FAILURE, "failed to deinitialize device %s", argv[2]);
} else
goto usage;
return EXIT_SUCCESS;
usage:
errx(EXIT_FAILURE, "usage: \n"
" %1$s --info <device>\n"
" %1$s --free\n"
" %1$s --used\n"
" %1$s --setup <filename> [<device>]\n"
" %1$s --delete\n",
argv[0]);
}
