mirror of
https://github.com/xen-project/xen.git
synced 2026-10-28 18:21:39 +01:00
Ian Campbell
d322b7f4c2
"tools/libs/*: Use O_CLOEXEC on Linux and FreeBSD" left some dead code in the FreeBSD case, which breaks the build on that platform. Also fix a typo "uint_32". Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Wei Liu <wei.liu2@citrix.com>
108 lines
2.7 KiB
C
108 lines
2.7 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 library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include <sys/ioctl.h>
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#include "private.h"
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#define PRIVCMD_DEV "/dev/xen/privcmd"
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int osdep_xenforeignmemory_open(xenforeignmemory_handle *fmem)
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{
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int fd = open(PRIVCMD_DEV, O_RDWR|O_CLOEXEC);
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if ( fd == -1 )
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{
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PERROR("Could not obtain handle on privileged command interface "
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PRIVCMD_DEV);
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return -1;
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}
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fmem->fd = fd;
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return 0;
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}
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int osdep_xenforeignmemory_close(xenforeignmemory_handle *fmem)
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{
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int fd = fmem->fd;
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if ( fd == -1 )
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return 0;
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return close(fd);
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}
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void *osdep_xenforeignmemory_map(xenforeignmemory_handle *fmem,
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uint32_t dom, int prot,
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size_t num,
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const xen_pfn_t arr[/*num*/], int err[/*num*/])
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{
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int fd = fmem->fd;
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privcmd_mmapbatch_t ioctlx;
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void *addr;
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int rc;
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addr = mmap(NULL, num << PAGE_SHIFT, prot, MAP_SHARED, fd, 0);
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if ( addr == MAP_FAILED )
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{
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PERROR("xc_map_foreign_bulk: mmap failed");
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return NULL;
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}
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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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ioctlx.err = err;
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rc = ioctl(fd, IOCTL_PRIVCMD_MMAPBATCH, &ioctlx);
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if ( rc < 0 )
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{
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int saved_errno = errno;
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PERROR("xc_map_foreign_bulk: ioctl failed");
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(void)munmap(addr, num << PAGE_SHIFT);
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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 osdep_xenforeignmemory_unmap(xenforeignmemory_handle *fmem,
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void *addr, size_t num)
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{
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return munmap(addr, num << PAGE_SHIFT);
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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-file-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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