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/*
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
* ----------------------------------------------------------------------------
*
* $FreeBSD$
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <err.h>
#include <sys/ioctl.h>
#include <sys/param.h>
#include <sys/mdioctl.h>
struct md_ioctl mdio;
enum {UNSET, ATTACH, DETACH} action = UNSET;
void
usage()
{
fprintf(stderr, "Usage:\n");
fprintf(stderr, "\tmdconfig -a -t type [-o [no]option]... [ -f file] [-s size] [-u unit]\n");
fprintf(stderr, "\tmdconfig -d -u unit\n");
fprintf(stderr, "\t\ttype = {malloc, preload, vnode, swap}\n");
fprintf(stderr, "\t\toption = {cluster, compress, reserve, autounit}\n");
fprintf(stderr, "\t\tsize = %%d (512 byte blocks), %%dk (kB), %%dm (MB) or %%dg (GB)\n");
exit(1);
}
int
main(int argc, char **argv)
{
int ch, fd, i;
char *p;
int cmdline = 0;
for (;;) {
ch = getopt(argc, argv, "adf:o:s:t:u:");
if (ch == -1)
break;
switch (ch) {
case 'a':
if (cmdline != 0)
usage();
action = ATTACH;
cmdline = 1;
break;
case 'd':
if (cmdline != 0)
usage();
action = DETACH;
mdio.md_options = MD_AUTOUNIT;
cmdline = 3;
break;
case 't':
if (cmdline != 1)
usage();
if (!strcmp(optarg, "malloc")) {
mdio.md_type = MD_MALLOC;
mdio.md_options = MD_AUTOUNIT | MD_COMPRESS;
} else if (!strcmp(optarg, "preload")) {
mdio.md_type = MD_PRELOAD;
mdio.md_options = 0;
} else if (!strcmp(optarg, "vnode")) {
mdio.md_type = MD_VNODE;
mdio.md_options = MD_CLUSTER | MD_AUTOUNIT | MD_COMPRESS;
} else if (!strcmp(optarg, "swap")) {
mdio.md_type = MD_SWAP;
mdio.md_options = MD_CLUSTER | MD_AUTOUNIT | MD_COMPRESS;
} else {
usage();
}
cmdline=2;
break;
case 'f':
if (cmdline != 2)
usage();
strncpy(mdio.md_file, optarg, sizeof(mdio.md_file) - 1);
break;
case 'o':
if (cmdline != 2)
usage();
if (!strcmp(optarg, "cluster"))
mdio.md_options |= MD_CLUSTER;
else if (!strcmp(optarg, "nocluster"))
mdio.md_options &= ~MD_CLUSTER;
else if (!strcmp(optarg, "compress"))
mdio.md_options |= MD_COMPRESS;
else if (!strcmp(optarg, "nocompress"))
mdio.md_options &= ~MD_COMPRESS;
else if (!strcmp(optarg, "reserve"))
mdio.md_options |= MD_RESERVE;
else if (!strcmp(optarg, "noreserve"))
mdio.md_options &= ~MD_RESERVE;
else if (!strcmp(optarg, "autounit"))
mdio.md_options |= MD_AUTOUNIT;
else if (!strcmp(optarg, "noautounit"))
mdio.md_options &= ~MD_AUTOUNIT;
else
errx(1, "Unknown option.");
break;
case 's':
if (cmdline != 2)
usage();
mdio.md_size = strtoul(optarg, &p, 0);
if (p == NULL || *p == '\0')
;
else if (*p == 'k' || *p == 'K')
mdio.md_size *= (1024 / DEV_BSIZE);
else if (*p == 'm' || *p == 'M')
mdio.md_size *= (1024 * 1024 / DEV_BSIZE);
else if (*p == 'g' || *p == 'G')
mdio.md_size *= (1024 * 1024 * 1024 / DEV_BSIZE);
else
errx(1, "Unknown suffix on -s argument");
break;
case 'u':
if (cmdline != 2 && cmdline != 3)
usage();
mdio.md_unit = strtoul(optarg, NULL, 0);
mdio.md_options &= ~MD_AUTOUNIT;
break;
default:
usage();
}
}
fd = open("/dev/mdctl", O_RDWR, 0);
if (fd < 0)
err(1, "open(/dev/mdctl)");
if (action == ATTACH) {
i = ioctl(fd, MDIOCATTACH, &mdio);
} else {
if (mdio.md_options & MD_AUTOUNIT)
usage();
i = ioctl(fd, MDIOCDETACH, &mdio);
}
if (i < 0)
err(1, "ioctl(/dev/mdctl)");
if (mdio.md_options & MD_AUTOUNIT)
printf("md%d\n", mdio.md_unit);
return (0);
}
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