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c59d87c460
Use the move from Linux 2.6 to Linux 3.x as an excuse to kill the annoying subdirectories in the XFS source code. Besides the large amount of file rename the only changes are to the Makefile, a few files including headers with the subdirectory prefix, and the binary sysctl compat code that includes a header under fs/xfs/ from kernel/. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
/*
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* Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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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.
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*
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* This program is distributed in the hope that it would 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <xfs.h>
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/* IRIX interpretation of an uuid_t */
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typedef struct {
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__be32 uu_timelow;
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__be16 uu_timemid;
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__be16 uu_timehi;
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__be16 uu_clockseq;
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__be16 uu_node[3];
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} xfs_uu_t;
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/*
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* uuid_getnodeuniq - obtain the node unique fields of a UUID.
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*
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* This is not in any way a standard or condoned UUID function;
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* it just something that's needed for user-level file handles.
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*/
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void
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uuid_getnodeuniq(uuid_t *uuid, int fsid [2])
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{
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xfs_uu_t *uup = (xfs_uu_t *)uuid;
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fsid[0] = (be16_to_cpu(uup->uu_clockseq) << 16) |
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be16_to_cpu(uup->uu_timemid);
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fsid[1] = be32_to_cpu(uup->uu_timelow);
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}
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int
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uuid_is_nil(uuid_t *uuid)
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{
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int i;
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char *cp = (char *)uuid;
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if (uuid == NULL)
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return 0;
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/* implied check of version number here... */
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for (i = 0; i < sizeof *uuid; i++)
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if (*cp++) return 0; /* not nil */
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return 1; /* is nil */
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}
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int
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uuid_equal(uuid_t *uuid1, uuid_t *uuid2)
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{
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return memcmp(uuid1, uuid2, sizeof(uuid_t)) ? 0 : 1;
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}
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