2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
13 Institution: The Information Technology Center, Carnegie-Mellon University
17 #include <afsconfig.h>
18 #include <afs/param.h>
22 #include <sys/types.h>
31 #include <sys/fcntl.h>
35 #include <afs/afsint.h>
37 #include <afs/afssyscalls.h>
43 #include "vol_internal.h"
45 /* returns 0 on success, errno on failure */
47 ReallyRead(DirHandle * file, int block, char *data)
53 fdP = IH_OPEN(file->dirh_handle);
58 nBytes = FDH_PREAD(fdP, data, (afs_fsize_t) AFS_PAGESIZE,
59 ((afs_foff_t)block) * AFS_PAGESIZE);
60 if (nBytes != AFS_PAGESIZE) {
72 /* returns 0 on success, errno on failure */
74 ReallyWrite(DirHandle * file, int block, char *data)
82 fdP = IH_OPEN(file->dirh_handle);
87 nBytes = FDH_PWRITE(fdP, data, (afs_fsize_t) AFS_PAGESIZE,
88 ((afs_foff_t)block) * AFS_PAGESIZE);
89 if (nBytes != AFS_PAGESIZE) {
98 *(file->volumeChanged) = 1;
102 /* SetSalvageDirHandle:
103 * Create a handle to a directory entry and reference it (IH_INIT).
104 * The handle needs to be dereferenced with the FidZap() routine.
107 SetSalvageDirHandle(DirHandle * dir, afs_int32 volume, Device device,
108 Inode inode, int *volumeChanged)
110 static int SalvageCacheCheck = 1;
111 memset(dir, 0, sizeof(DirHandle));
113 dir->dirh_device = device;
114 dir->dirh_volume = volume;
115 dir->dirh_inode = inode;
116 IH_INIT(dir->dirh_handle, device, volume, inode);
117 /* Always re-read for a new dirhandle */
118 dir->dirh_cacheCheck = SalvageCacheCheck++;
119 dir->volumeChanged = volumeChanged;
123 FidZap(DirHandle * file)
125 IH_RELEASE(file->dirh_handle);
126 memset(file, 0, sizeof(DirHandle));
130 FidZero(DirHandle * file)
132 memset(file, 0, sizeof(DirHandle));
136 FidEq(DirHandle * afile, DirHandle * bfile)
138 if (afile->dirh_volume != bfile->dirh_volume)
140 if (afile->dirh_device != bfile->dirh_device)
142 if (afile->dirh_cacheCheck != bfile->dirh_cacheCheck)
144 if (afile->dirh_inode != bfile->dirh_inode)
150 FidVolEq(DirHandle * afile, afs_int32 vid)
152 if (afile->dirh_volume != vid)
158 FidCpy(DirHandle * tofile, DirHandle * fromfile)
161 IH_COPY(tofile->dirh_handle, fromfile->dirh_handle);