5f5022daee
Xen is a hypervisor which supports running multiple guest operating systems on a single machine. Guest OSes (also called "domains") can be either paravirtualised (i.e. make hypercalls in order to access hardware), run in HVM (Hardware Virtualisation Mode) where they will be presented with virtual devices, or a combination where they use hypercalls to access hardware but manage memory themselves. At boot, the xen kernel is loaded along with the guest kernel for the first domain (called domain0). domain0 has privileges to access the physical hardware (PCI and ISA devices), administrate other domains and provide virtual devices (disks and network) to other domains.
62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
$NetBSD: patch-tools_qemu-xen-traditional_block-raw-posix.c,v 1.1 2021/04/18 12:31:26 bouyer Exp $
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- if given a block device, use the character device instead.
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--- tools/qemu-xen-traditional/block-raw-posix.c.orig 2014-10-06 17:50:24.000000000 +0200
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+++ tools/qemu-xen-traditional/block-raw-posix.c 2015-01-19 13:16:38.000000000 +0100
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@@ -65,6 +65,7 @@
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#include <sys/disklabel.h>
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#include <sys/dkio.h>
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#include <sys/disk.h>
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+#include <sys/param.h>
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#endif
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#ifdef __OpenBSD__
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@@ -72,6 +73,13 @@
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#include <sys/disklabel.h>
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#include <sys/dkio.h>
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#endif
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+#if defined(__NetBSD__)
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+#include <sys/ioctl.h>
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+#include <sys/disklabel.h>
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+#include <sys/dkio.h>
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+#define SLIST_ENTRY(x) int /*XXXX !*/
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+#include <sys/disk.h>
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+#endif
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//#define DEBUG_FLOPPY
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@@ -1008,6 +1016,33 @@
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{
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BDRVRawState *s = bs->opaque;
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int fd, open_flags, ret;
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+#ifdef __NetBSD__
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+ struct stat sb;
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+ static char namebuf[MAXPATHLEN];
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+ const char *dp;
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+
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+ if (lstat(filename, &sb) < 0) {
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+ fprintf(stderr, "%s: stat failed: %s\n", filename, strerror(errno));
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+ return -errno;
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+ }
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+ if (S_ISLNK(sb.st_mode)) {
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+ fprintf(stderr, "%s: symolink links not supported by qemu-dm\n",
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+ filename);
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+ return -EINVAL;
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+ }
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+ if (S_ISBLK(sb.st_mode)) {
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+ dp = strrchr(filename, '/');
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+ if (dp == NULL) {
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+ snprintf(namebuf, MAXPATHLEN, "r%s", filename);
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+ } else {
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+ snprintf(namebuf, MAXPATHLEN, "%.*s/r%s",
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+ (int)(dp - filename), filename, dp + 1);
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+ }
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+ fprintf(stderr, "%s is a block device", filename);
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+ filename = namebuf;
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+ fprintf(stderr, ", using %s\n", filename);
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+ }
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+#endif
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posix_aio_init();
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