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https://github.com/xen-project/xen.git
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kaf24@firebug.cl.cam.ac.uk
2d0922d515
Make header path for kernel's privcmd/evtchn headers generic. Remove pointless xi_*() interface that was using private libxc interfaces. Signed-off-by: John Levon <john.levon@sun.com>
115 lines
2.8 KiB
C
115 lines
2.8 KiB
C
/******************************************************************************
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*
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* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation, version 2 of the
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* License.
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*/
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#include "xc_private.h"
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#include <xen/memory.h>
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#include <xen/sys/evtchn.h>
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int xc_interface_open(void)
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{
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int fd = open("/proc/xen/privcmd", O_RDWR);
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if ( fd == -1 )
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PERROR("Could not obtain handle on privileged command interface");
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return fd;
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}
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int xc_interface_close(int xc_handle)
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{
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return close(xc_handle);
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}
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void *xc_map_foreign_batch(int xc_handle, uint32_t dom, int prot,
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unsigned long *arr, int num)
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{
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privcmd_mmapbatch_t ioctlx;
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void *addr;
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addr = mmap(NULL, num*PAGE_SIZE, prot, MAP_SHARED, xc_handle, 0);
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if ( addr == MAP_FAILED )
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return NULL;
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ioctlx.num=num;
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ioctlx.dom=dom;
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ioctlx.addr=(unsigned long)addr;
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ioctlx.arr=arr;
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if ( ioctl(xc_handle, IOCTL_PRIVCMD_MMAPBATCH, &ioctlx) < 0 )
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{
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int saved_errno = errno;
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perror("XXXXXXXX");
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(void)munmap(addr, num*PAGE_SIZE);
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errno = saved_errno;
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return NULL;
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}
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return addr;
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}
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void *xc_map_foreign_range(int xc_handle, uint32_t dom,
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int size, int prot,
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unsigned long mfn)
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{
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privcmd_mmap_t ioctlx;
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privcmd_mmap_entry_t entry;
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void *addr;
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addr = mmap(NULL, size, prot, MAP_SHARED, xc_handle, 0);
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if ( addr == MAP_FAILED )
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return NULL;
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ioctlx.num=1;
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ioctlx.dom=dom;
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ioctlx.entry=&entry;
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entry.va=(unsigned long) addr;
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entry.mfn=mfn;
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entry.npages=(size+PAGE_SIZE-1)>>PAGE_SHIFT;
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if ( ioctl(xc_handle, IOCTL_PRIVCMD_MMAP, &ioctlx) < 0 )
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{
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int saved_errno = errno;
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(void)munmap(addr, size);
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errno = saved_errno;
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return NULL;
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}
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return addr;
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}
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int xc_map_foreign_ranges(int xc_handle, uint32_t dom,
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privcmd_mmap_entry_t *entries, int nr)
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{
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privcmd_mmap_t ioctlx;
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ioctlx.num = nr;
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ioctlx.dom = dom;
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ioctlx.entry = entries;
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return ioctl(xc_handle, IOCTL_PRIVCMD_MMAP, &ioctlx);
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}
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static int do_privcmd(int xc_handle, unsigned int cmd, unsigned long data)
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{
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return ioctl(xc_handle, cmd, data);
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}
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int do_xen_hypercall(int xc_handle, privcmd_hypercall_t *hypercall)
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{
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return do_privcmd(xc_handle,
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IOCTL_PRIVCMD_HYPERCALL,
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(unsigned long)hypercall);
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}
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/*
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* Local variables:
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* mode: C
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* c-set-style: "BSD"
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* c-basic-offset: 4
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* tab-width: 4
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* indent-tabs-mode: nil
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* End:
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*/
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