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authorphk <phk@FreeBSD.org>2000-12-28 20:57:57 +0000
committerphk <phk@FreeBSD.org>2000-12-28 20:57:57 +0000
commit4728b0144a044e15a78b3dda4faed46459a31f63 (patch)
tree07322ba8b0db97339750f6536752e804b896a461 /sbin/mdconfig
parentdec1690e30cd9ad27fc0877094e0a20dd23a8c82 (diff)
downloadFreeBSD-src-4728b0144a044e15a78b3dda4faed46459a31f63.zip
FreeBSD-src-4728b0144a044e15a78b3dda4faed46459a31f63.tar.gz
Preliminary scaffolding for the new integrated vn+md device driver.
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.
Diffstat (limited to 'sbin/mdconfig')
-rw-r--r--sbin/mdconfig/Makefile9
-rw-r--r--sbin/mdconfig/mdconfig.c101
2 files changed, 110 insertions, 0 deletions
diff --git a/sbin/mdconfig/Makefile b/sbin/mdconfig/Makefile
new file mode 100644
index 0000000..2232153
--- /dev/null
+++ b/sbin/mdconfig/Makefile
@@ -0,0 +1,9 @@
+# $FreeBSD$
+
+PROG= mdconfig
+#MAN8= mdconfig.8
+#CFLAGS+= -g -static -Wall
+#MLINKS= mdconfig.8 swapfile.8 mdconfig.8 vnconfig.8
+NOMAN= not_yet
+
+.include <bsd.prog.mk>
diff --git a/sbin/mdconfig/mdconfig.c b/sbin/mdconfig/mdconfig.c
new file mode 100644
index 0000000..0186e18
--- /dev/null
+++ b/sbin/mdconfig/mdconfig.c
@@ -0,0 +1,101 @@
+/*
+ * ----------------------------------------------------------------------------
+ * "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;
+
+int
+main(int argc, char **argv)
+{
+ int ch, fd, i;
+
+ mdio.md_options = MD_CLUSTER | MD_AUTOUNIT;
+
+ for (;;) {
+ ch = getopt(argc, argv, "adf:o:s:t:u:");
+ if (ch == -1)
+ break;
+ switch (ch) {
+ case 'a':
+ action = ATTACH;
+ break;
+ case 'd':
+ action = DETACH;
+ break;
+ case 'f':
+ strncpy(mdio.md_file, optarg, sizeof(mdio.md_file) - 1);
+ break;
+ case 'o':
+ if (!strcmp(optarg, "cluster"))
+ mdio.md_options |= MD_CLUSTER;
+ else if (!strcmp(optarg, "nocluster"))
+ mdio.md_options &= ~MD_CLUSTER;
+ 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':
+ mdio.md_size = strtoul(optarg, NULL, 0);
+ break;
+ case 't':
+ if (!strcmp(optarg, "malloc"))
+ mdio.md_type = MD_MALLOC;
+ else if (!strcmp(optarg, "preload"))
+ mdio.md_type = MD_PRELOAD;
+ else if (!strcmp(optarg, "vnode"))
+ mdio.md_type = MD_VNODE;
+ else if (!strcmp(optarg, "swap"))
+ mdio.md_type = MD_SWAP;
+ else
+ errx(1, "Unknown type.");
+ break;
+ case 'u':
+ mdio.md_unit = strtoul(optarg, NULL, 0);
+ mdio.md_options &= ~MD_AUTOUNIT;
+ break;
+ default:
+ errx(1, "Usage: %s [-ad] [-f file] [-o option] [-s size] [-t type ] [-u unit].", argv[0]);
+ }
+ }
+
+ fd = open("/dev/mdctl", O_RDWR, 0);
+ if (fd < 0)
+ err(1, "/dev/mdctl");
+ if (action == ATTACH)
+ i = ioctl(fd, MDIOCATTACH, &mdio);
+ else if (action == DETACH)
+ i = ioctl(fd, MDIOCDETACH, &mdio);
+ else
+ errx(1, "Neither -a(ttach) nor -d(etach) options present.");
+ if (i < 0)
+ err(1, "ioctl(/dev/mdctl)");
+ return (0);
+}
+
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