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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2019 Joyent, Inc.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <sys/dkio.h>
int
main(int argc, char **argv)
{
int umap, fd;
if (argc < 2) {
fprintf(stderr, "missing disk name\n");
exit(2);
}
if ((fd = open(argv[1], O_RDONLY)) == -1) {
fprintf(stderr, "couldn't open %s: %s\n", argv[1],
strerror(errno));
exit(2);
}
if (ioctl(fd, DKIOC_CANFREE, &umap) < 0) {
fprintf(stderr, "ioctl failed %s: %s\n", argv[1],
strerror(errno));
exit(2);
}
(void) close(fd);
return (umap ? 0 : 1);
}
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