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
10 #include <afsconfig.h>
11 #include "afs/param.h"
14 #include "afs/sysincludes.h" /* Standard vendor system headers */
15 #include "afsincludes.h" /* Afs-based standard headers */
16 #include "afs/afs_stats.h" /* afs statistics */
18 afs_ucred_t afs_osi_cred;
19 int afs_osicred_initialized = 0;
20 afs_lock_t afs_xosi; /* lock is for tvattr */
21 extern struct osi_dev cacheDev;
22 extern struct vfs *afs_cacheVfsp;
25 afs_XFSIGetVnode(afs_dcache_id_t *ainode)
32 xfs_igetinode(afs_cacheVfsp, (dev_t) cacheDev.dev, ainode->ufs, &ip))) {
33 osi_Panic("afs_XFSIGetVnode: xfs_igetinode failed, error=%d", error);
39 /* Force to 64 bits, even for EFS filesystems. */
41 osi_UFSOpen(afs_dcache_id_t *ainode)
44 register struct osi_file *afile = NULL;
45 extern int cacheDiskType;
48 AFS_STATCNT(osi_UFSOpen);
49 if (cacheDiskType != AFS_FCACHE_TYPE_UFS) {
50 osi_Panic("UFSOpen called for non-UFS cache\n");
52 if (!afs_osicred_initialized) {
53 /* valid for alpha_osf, SunOS, Ultrix */
54 memset(&afs_osi_cred, 0, sizeof(afs_ucred_t));
55 crhold(&afs_osi_cred); /* don't let it evaporate, since it is static */
56 afs_osicred_initialized = 1;
58 afile = (struct osi_file *)osi_AllocSmallSpace(sizeof(struct osi_file));
60 afile->vnode = AFS_SGI_IGETVNODE(ainode->ufs);
62 afile->size = VnodeToSize(afile->vnode);
64 afile->proc = (int (*)())0;
65 afile->inum = ainode->ufs; /* for hint validity checking */
70 afs_osi_Stat(register struct osi_file *afile, register struct osi_stat *astat)
72 register afs_int32 code;
74 AFS_STATCNT(osi_Stat);
75 MObtainWriteLock(&afs_xosi, 320);
77 tvattr.va_mask = AT_SIZE | AT_BLKSIZE | AT_MTIME | AT_ATIME;
78 AFS_VOP_GETATTR(afile->vnode, &tvattr, 0, &afs_osi_cred, code);
81 astat->size = tvattr.va_size;
82 astat->mtime = tvattr.va_mtime.tv_sec;
83 astat->atime = tvattr.va_atime.tv_sec;
85 MReleaseWriteLock(&afs_xosi);
90 osi_UFSClose(register struct osi_file *afile)
92 AFS_STATCNT(osi_Close);
94 VN_RELE(afile->vnode);
97 osi_FreeSmallSpace(afile);
102 osi_UFSTruncate(register struct osi_file *afile, afs_int32 asize)
104 afs_ucred_t *oldCred;
106 register afs_int32 code;
107 struct osi_stat tstat;
109 AFS_STATCNT(osi_Truncate);
111 /* This routine only shrinks files, and most systems
112 * have very slow truncates, even when the file is already
113 * small enough. Check now and save some time.
115 code = afs_osi_Stat(afile, &tstat);
116 if (code || tstat.size <= asize)
118 MObtainWriteLock(&afs_xosi, 321);
120 tvattr.va_mask = AT_SIZE;
121 tvattr.va_size = asize;
122 AFS_VOP_SETATTR(afile->vnode, &tvattr, 0, &afs_osi_cred, code);
124 MReleaseWriteLock(&afs_xosi);
129 /* Generic read interface */
131 afs_osi_Read(register struct osi_file *afile, int offset, void *aptr,
134 afs_ucred_t *oldCred;
136 register afs_int32 code;
137 register afs_int32 cnt1 = 0;
138 AFS_STATCNT(osi_Read);
141 * If the osi_file passed in is NULL, panic only if AFS is not shutting
142 * down. No point in crashing when we are already shutting down
145 if (!afs_shuttingdown)
146 osi_Panic("osi_Read called with null param");
152 afile->offset = offset;
155 gop_rdwr(UIO_READ, afile->vnode, (caddr_t) aptr, asize, afile->offset,
156 AFS_UIOSYS, 0, 0x7fffffff, &afs_osi_cred, &resid);
159 code = asize - resid;
160 afile->offset += code;
162 afs_Trace2(afs_iclSetp, CM_TRACE_READFAILED, ICL_TYPE_INT32, resid,
163 ICL_TYPE_INT32, code);
169 /* Generic write interface */
171 afs_osi_Write(register struct osi_file *afile, afs_int32 offset, void *aptr,
174 afs_ucred_t *oldCred;
176 register afs_int32 code;
177 AFS_STATCNT(osi_Write);
179 osi_Panic("afs_osi_Write called with null param");
181 afile->offset = offset;
184 gop_rdwr(UIO_WRITE, afile->vnode, (caddr_t) aptr, asize,
185 afile->offset, AFS_UIOSYS, 0, 0x7fffffff, &afs_osi_cred,
189 code = asize - resid;
190 afile->offset += code;
194 ("\n\n\n*** Cache partition is FULL - Decrease cachesize!!! ***\n\n");
198 (*afile->proc) (afile, code);
204 /* This work should be handled by physstrat in ca/machdep.c.
205 This routine written from the RT NFS port strategy routine.
206 It has been generalized a bit, but should still be pretty clear. */
208 afs_osi_MapStrategy(int (*aproc) (), register struct buf *bp)
210 afs_int32 returnCode;
212 AFS_STATCNT(osi_MapStrategy);
213 returnCode = (*aproc) (bp);
221 shutdown_osifile(void)
223 AFS_STATCNT(shutdown_osifile);
224 if (afs_cold_shutdown) {
225 afs_osicred_initialized = 0;