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643da37fd1
This bases File-Ids on the inode numbers again. The whole stuff was added because at that time Apple clients 1. would be upset by inode number reusage and 2. had a client side bug in their fallback implemetentation that assigns File-Ids on the client side in case the server provides File-Ids of 0. After discussion with folks at Apple it should be safe these days to rely on the Mac to generate its own File-Ids and let Samba return 0 File-Ids. Signed-off-by: Ralph Boehme <slow@samba.org> Reviewed-by: Jeremy Allison <jra@samba.org>
83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
/*
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Unix SMB/CIFS implementation.
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file_id structure handling
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Copyright (C) Andrew Tridgell 2007
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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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, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "lib/file_id.h"
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/*
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return True if two file_id structures are equal
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*/
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bool file_id_equal(const struct file_id *id1, const struct file_id *id2)
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{
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return id1->inode == id2->inode && id1->devid == id2->devid &&
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id1->extid == id2->extid;
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}
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char *file_id_str_buf(struct file_id fid, struct file_id_buf *dst)
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{
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snprintf(dst->buf,
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sizeof(dst->buf),
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"%"PRIu64":%"PRIu64":%"PRIu64,
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fid.devid,
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fid.inode,
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fid.extid);
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return dst->buf;
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}
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/*
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push a 16 byte version of a file id into a buffer. This ignores the extid
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and is needed when dev/inodes are stored in persistent storage (tdbs).
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*/
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void push_file_id_16(char *buf, const struct file_id *id)
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{
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SIVAL(buf, 0, id->devid&0xFFFFFFFF);
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SIVAL(buf, 4, id->devid>>32);
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SIVAL(buf, 8, id->inode&0xFFFFFFFF);
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SIVAL(buf, 12, id->inode>>32);
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}
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/*
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push a 24 byte version of a file id into a buffer
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*/
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void push_file_id_24(char *buf, const struct file_id *id)
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{
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SIVAL(buf, 0, id->devid&0xFFFFFFFF);
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SIVAL(buf, 4, id->devid>>32);
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SIVAL(buf, 8, id->inode&0xFFFFFFFF);
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SIVAL(buf, 12, id->inode>>32);
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SIVAL(buf, 16, id->extid&0xFFFFFFFF);
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SIVAL(buf, 20, id->extid>>32);
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}
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/*
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pull a 24 byte version of a file id from a buffer
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*/
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void pull_file_id_24(const char *buf, struct file_id *id)
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{
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ZERO_STRUCTP(id);
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id->devid = IVAL(buf, 0);
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id->devid |= ((uint64_t)IVAL(buf,4))<<32;
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id->inode = IVAL(buf, 8);
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id->inode |= ((uint64_t)IVAL(buf,12))<<32;
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id->extid = IVAL(buf, 16);
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id->extid |= ((uint64_t)IVAL(buf,20))<<32;
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}
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