--- /dev/null
+/******************************************************************************
+ *
+ * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, version 2 of the
+ * License.
+ */
+
+#include "xc_private.h"
+
+#include <xen/memory.h>
+#include <xen/sys/evtchn.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+int xc_interface_open(void)
+{
+ int flags, saved_errno;
+ int fd = open("/dev/xen/privcmd", O_RDWR);
+
+ if ( fd == -1 )
+ {
+ PERROR("Could not obtain handle on privileged command interface");
+ return -1;
+ }
+
+ /* Although we return the file handle as the 'xc handle' the API
+ does not specify / guarentee that this integer is in fact
+ a file handle. Thus we must take responsiblity to ensure
+ it doesn't propagate (ie leak) outside the process */
+ if ( (flags = fcntl(fd, F_GETFD)) < 0 )
+ {
+ PERROR("Could not get file handle flags");
+ goto error;
+ }
+ flags |= FD_CLOEXEC;
+ if ( fcntl(fd, F_SETFD, flags) < 0 )
+ {
+ PERROR("Could not set file handle flags");
+ goto error;
+ }
+
+ return fd;
+
+ error:
+ saved_errno = errno;
+ close(fd);
+ errno = saved_errno;
+ return -1;
+}
+
+int xc_interface_close(int xc_handle)
+{
+ return close(xc_handle);
+}
+
+void *xc_map_foreign_batch(int xc_handle, uint32_t dom, int prot,
+ xen_pfn_t *arr, int num)
+{
+ privcmd_mmapbatch_t ioctlx;
+ void *addr;
+ addr = mmap(NULL, num*PAGE_SIZE, prot, MAP_SHARED, xc_handle, 0);
+ if ( addr == MAP_FAILED )
+ return NULL;
+
+ ioctlx.num=num;
+ ioctlx.dom=dom;
+ ioctlx.addr=(unsigned long)addr;
+ ioctlx.arr=arr;
+ if ( ioctl(xc_handle, IOCTL_PRIVCMD_MMAPBATCH, &ioctlx) < 0 )
+ {
+ int saved_errno = errno;
+ perror("XXXXXXXX");
+ (void)munmap(addr, num*PAGE_SIZE);
+ errno = saved_errno;
+ return NULL;
+ }
+ return addr;
+
+}
+
+void *xc_map_foreign_range(int xc_handle, uint32_t dom,
+ int size, int prot,
+ unsigned long mfn)
+{
+ privcmd_mmap_t ioctlx;
+ privcmd_mmap_entry_t entry;
+ void *addr;
+ addr = mmap(NULL, size, prot, MAP_SHARED, xc_handle, 0);
+ if ( addr == MAP_FAILED )
+ return NULL;
+
+ ioctlx.num=1;
+ ioctlx.dom=dom;
+ ioctlx.entry=&entry;
+ entry.va=(unsigned long) addr;
+ entry.mfn=mfn;
+ entry.npages=(size+PAGE_SIZE-1)>>PAGE_SHIFT;
+ if ( ioctl(xc_handle, IOCTL_PRIVCMD_MMAP, &ioctlx) < 0 )
+ {
+ int saved_errno = errno;
+ (void)munmap(addr, size);
+ errno = saved_errno;
+ return NULL;
+ }
+ return addr;
+}
+
+int xc_map_foreign_ranges(int xc_handle, uint32_t dom,
+ privcmd_mmap_entry_t *entries, int nr)
+{
+ privcmd_mmap_t ioctlx;
+
+ ioctlx.num = nr;
+ ioctlx.dom = dom;
+ ioctlx.entry = entries;
+
+ return ioctl(xc_handle, IOCTL_PRIVCMD_MMAP, &ioctlx);
+}
+
+static int do_privcmd(int xc_handle, unsigned int cmd, unsigned long data)
+{
+ return ioctl(xc_handle, cmd, data);
+}
+
+int do_xen_hypercall(int xc_handle, privcmd_hypercall_t *hypercall)
+{
+ return do_privcmd(xc_handle,
+ IOCTL_PRIVCMD_HYPERCALL,
+ (unsigned long)hypercall);
+}
+
+int xc_evtchn_open(void)
+{
+ int fd;
+
+ if ( (fd = open("/dev/xen/evtchn", O_RDWR)) == -1 )
+ {
+ PERROR("Could not open event channel interface");
+ return -1;
+ }
+
+ return fd;
+}
+
+int xc_evtchn_close(int xce_handle)
+{
+ return close(xce_handle);
+}
+
+int xc_evtchn_fd(int xce_handle)
+{
+ return xce_handle;
+}
+
+int xc_evtchn_notify(int xce_handle, evtchn_port_t port)
+{
+ struct ioctl_evtchn_notify notify;
+
+ notify.port = port;
+
+ return ioctl(xce_handle, IOCTL_EVTCHN_NOTIFY, ¬ify);
+}
+
+evtchn_port_t xc_evtchn_bind_interdomain(int xce_handle, int domid,
+ evtchn_port_t remote_port)
+{
+ struct ioctl_evtchn_bind_interdomain bind;
+
+ bind.remote_domain = domid;
+ bind.remote_port = remote_port;
+
+ return ioctl(xce_handle, IOCTL_EVTCHN_BIND_INTERDOMAIN, &bind);
+}
+
+int xc_evtchn_unbind(int xce_handle, evtchn_port_t port)
+{
+ struct ioctl_evtchn_unbind unbind;
+
+ unbind.port = port;
+
+ return ioctl(xce_handle, IOCTL_EVTCHN_UNBIND, &unbind);
+}
+
+evtchn_port_t xc_evtchn_bind_virq(int xce_handle, unsigned int virq)
+{
+ struct ioctl_evtchn_bind_virq bind;
+
+ bind.virq = virq;
+
+ return ioctl(xce_handle, IOCTL_EVTCHN_BIND_VIRQ, &bind);
+}
+
+static int dorw(int fd, char *data, size_t size, int do_write)
+{
+ size_t offset = 0;
+ ssize_t len;
+
+ while ( offset < size )
+ {
+ if (do_write)
+ len = write(fd, data + offset, size - offset);
+ else
+ len = read(fd, data + offset, size - offset);
+
+ if ( len == -1 )
+ {
+ if ( errno == EINTR )
+ continue;
+ return -1;
+ }
+
+ offset += len;
+ }
+
+ return 0;
+}
+
+evtchn_port_t xc_evtchn_pending(int xce_handle)
+{
+ evtchn_port_t port;
+
+ if ( dorw(xce_handle, (char *)&port, sizeof(port), 0) == -1 )
+ return -1;
+
+ return port;
+}
+
+int xc_evtchn_unmask(int xce_handle, evtchn_port_t port)
+{
+ return dorw(xce_handle, (char *)&port, sizeof(port), 1);
+}
--- /dev/null
+/******************************************************************************
+ *
+ * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (C) 2005 Rusty Russell IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, version 2 of the
+ * License.
+ */
+
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/mman.h>
+#include <xen/sys/xenbus.h>
+
+#include "xenstored_core.h"
+
+evtchn_port_t xenbus_evtchn(void)
+{
+ int fd;
+ evtchn_port_t port;
+
+ fd = open("/dev/xen/xenbus", O_RDONLY);
+ if (fd == -1)
+ return -1;
+
+ port = ioctl(fd, IOCTL_XENBUS_XENSTORE_EVTCHN);
+
+ close(fd);
+ return port;
+}
+
+void *xenbus_map(void)
+{
+ int fd;
+ void *addr;
+
+ fd = open("/dev/xen/xenbus", O_RDWR);
+ if (fd == -1)
+ return NULL;
+
+ addr = mmap(NULL, getpagesize(), PROT_READ|PROT_WRITE,
+ MAP_SHARED, fd, 0);
+
+ if (addr == MAP_FAILED)
+ addr = NULL;
+
+ close(fd);
+
+ return addr;
+}
+
+void xenbus_notify_running(void)
+{
+ int fd;
+
+ fd = open("/dev/xen/xenbus", O_RDONLY);
+
+ (void) ioctl(fd, IOCTL_XENBUS_NOTIFY_UP);
+
+ close(fd);
+}
projects / xen.git / commitdiff