70d586c091
I decided to work on the md(4) driver and integrate the vn(4) functionality into it mainly based on the name being more suitable. Ideally 'vd' as in "virtual disk" would probably be the most logical but our sound-master pointed out that this would cause uncontrollable fits of giggles in the brits. Another complication would the needed changes to the ramdisk boot/root functionality. The vn driver will stay around for some time after I complete this merge for transition reasons, and I'll make it whine to people that they should migrate to the md(4) driver for some time before it dies. The kernel part of the new md(4) driver will be committed after more testing.
102 lines
2.5 KiB
C
102 lines
2.5 KiB
C
/*
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* ----------------------------------------------------------------------------
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* "THE BEER-WARE LICENSE" (Revision 42):
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* <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you
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* can do whatever you want with this stuff. If we meet some day, and you think
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* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
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* ----------------------------------------------------------------------------
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*
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* $FreeBSD$
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <string.h>
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#include <err.h>
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#include <sys/ioctl.h>
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#include <sys/param.h>
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#include <sys/mdioctl.h>
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struct md_ioctl mdio;
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enum {UNSET, ATTACH, DETACH} action = UNSET;
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int
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main(int argc, char **argv)
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{
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int ch, fd, i;
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mdio.md_options = MD_CLUSTER | MD_AUTOUNIT;
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for (;;) {
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ch = getopt(argc, argv, "adf:o:s:t:u:");
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if (ch == -1)
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break;
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switch (ch) {
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case 'a':
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action = ATTACH;
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break;
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case 'd':
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action = DETACH;
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break;
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case 'f':
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strncpy(mdio.md_file, optarg, sizeof(mdio.md_file) - 1);
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break;
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case 'o':
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if (!strcmp(optarg, "cluster"))
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mdio.md_options |= MD_CLUSTER;
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else if (!strcmp(optarg, "nocluster"))
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mdio.md_options &= ~MD_CLUSTER;
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else if (!strcmp(optarg, "reserve"))
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mdio.md_options |= MD_RESERVE;
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else if (!strcmp(optarg, "noreserve"))
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mdio.md_options &= ~MD_RESERVE;
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else if (!strcmp(optarg, "autounit"))
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mdio.md_options |= MD_AUTOUNIT;
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else if (!strcmp(optarg, "noautounit"))
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mdio.md_options &= ~MD_AUTOUNIT;
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else
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errx(1, "Unknown option.");
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break;
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case 's':
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mdio.md_size = strtoul(optarg, NULL, 0);
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break;
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case 't':
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if (!strcmp(optarg, "malloc"))
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mdio.md_type = MD_MALLOC;
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else if (!strcmp(optarg, "preload"))
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mdio.md_type = MD_PRELOAD;
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else if (!strcmp(optarg, "vnode"))
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mdio.md_type = MD_VNODE;
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else if (!strcmp(optarg, "swap"))
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mdio.md_type = MD_SWAP;
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else
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errx(1, "Unknown type.");
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break;
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case 'u':
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mdio.md_unit = strtoul(optarg, NULL, 0);
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mdio.md_options &= ~MD_AUTOUNIT;
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break;
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default:
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errx(1, "Usage: %s [-ad] [-f file] [-o option] [-s size] [-t type ] [-u unit].", argv[0]);
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}
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}
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fd = open("/dev/mdctl", O_RDWR, 0);
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if (fd < 0)
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err(1, "/dev/mdctl");
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if (action == ATTACH)
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i = ioctl(fd, MDIOCATTACH, &mdio);
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else if (action == DETACH)
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i = ioctl(fd, MDIOCDETACH, &mdio);
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else
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errx(1, "Neither -a(ttach) nor -d(etach) options present.");
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if (i < 0)
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err(1, "ioctl(/dev/mdctl)");
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return (0);
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}
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