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"
15 #include "afs/sysincludes.h" /* Standard vendor system headers */
16 #include "afsincludes.h" /* Afs-based standard headers */
17 #include "afs/afs_stats.h" /* afs statistics */
20 int afs_osicred_initialized = 0;
21 struct AFS_UCRED afs_osi_cred;
22 afs_lock_t afs_xosi; /* lock is for tvattr */
23 extern struct osi_dev cacheDev;
24 extern struct mount *afs_cacheVfsp;
28 osi_UFSOpen(afs_int32 ainode)
31 register struct osi_file *afile = NULL;
32 extern int cacheDiskType;
35 AFS_STATCNT(osi_UFSOpen);
36 if (cacheDiskType != AFS_FCACHE_TYPE_UFS) {
37 osi_Panic("UFSOpen called for non-UFS cache\n");
39 if (!afs_osicred_initialized) {
40 /* valid for alpha_osf, SunOS, Ultrix */
41 memset((char *)&afs_osi_cred, 0, sizeof(struct AFS_UCRED));
42 afs_osi_cred.cr_ref++;
43 afs_osicred_initialized = 1;
45 afile = (struct osi_file *)osi_AllocSmallSpace(sizeof(struct osi_file));
48 igetinode(afs_cacheVfsp, (dev_t) cacheDev.dev, (ino_t) ainode, &ip,
52 osi_FreeSmallSpace(afile);
53 osi_Panic("UFSOpen: igetinode failed");
55 afile->vnode = ITOV(ip);
56 #if defined(AFS_FBSD50_ENV)
57 VOP_UNLOCK(afile->vnode, 0, curthread);
59 VOP_UNLOCK(afile->vnode, 0, curproc);
61 afile->size = VTOI(afile->vnode)->i_size;
63 afile->proc = (int (*)())0;
64 afile->inum = ainode; /* for hint validity checking */
69 afs_osi_Stat(register struct osi_file *afile, register struct osi_stat *astat)
71 register afs_int32 code;
73 AFS_STATCNT(osi_Stat);
74 MObtainWriteLock(&afs_xosi, 320);
76 #if defined(AFS_FBSD50_ENV)
77 code = VOP_GETATTR(afile->vnode, &tvattr, &afs_osi_cred, curthread);
79 code = VOP_GETATTR(afile->vnode, &tvattr, &afs_osi_cred, curproc);
83 astat->size = tvattr.va_size;
84 astat->blksize = tvattr.va_blocksize;
85 astat->mtime = tvattr.va_mtime.tv_sec;
86 astat->atime = tvattr.va_atime.tv_sec;
88 MReleaseWriteLock(&afs_xosi);
93 osi_UFSClose(register struct osi_file *afile)
95 AFS_STATCNT(osi_Close);
97 AFS_RELE(afile->vnode);
100 osi_FreeSmallSpace(afile);
105 osi_UFSTruncate(register struct osi_file *afile, afs_int32 asize)
108 register afs_int32 code;
109 struct osi_stat tstat;
110 AFS_STATCNT(osi_Truncate);
112 /* This routine only shrinks files, and most systems
113 * have very slow truncates, even when the file is already
114 * small enough. Check now and save some time.
116 code = afs_osi_Stat(afile, &tstat);
117 if (code || tstat.size <= asize)
119 MObtainWriteLock(&afs_xosi, 321);
121 tvattr.va_size = asize;
123 #if defined(AFS_FBSD50_ENV)
124 code = VOP_SETATTR(afile->vnode, &tvattr, &afs_osi_cred, curthread);
126 code = VOP_SETATTR(afile->vnode, &tvattr, &afs_osi_cred, curproc);
129 MReleaseWriteLock(&afs_xosi);
134 osi_DisableAtimes(struct vnode *avp)
136 struct inode *ip = VTOI(avp);
137 ip->i_flag &= ~IN_ACCESS;
141 /* Generic read interface */
143 afs_osi_Read(register struct osi_file *afile, int offset, void *aptr,
147 register afs_int32 code;
148 AFS_STATCNT(osi_Read);
151 * If the osi_file passed in is NULL, panic only if AFS is not shutting
152 * down. No point in crashing when we are already shutting down
155 if (!afs_shuttingdown)
156 osi_Panic("osi_Read called with null param");
162 afile->offset = offset;
165 gop_rdwr(UIO_READ, afile->vnode, (caddr_t) aptr, asize, afile->offset,
166 AFS_UIOSYS, IO_UNIT, &afs_osi_cred, &resid);
169 code = asize - resid;
170 afile->offset += code;
171 osi_DisableAtimes(afile->vnode);
173 afs_Trace2(afs_iclSetp, CM_TRACE_READFAILED, ICL_TYPE_INT32, resid,
174 ICL_TYPE_INT32, code);
180 /* Generic write interface */
182 afs_osi_Write(register struct osi_file *afile, afs_int32 offset, void *aptr,
186 register afs_int32 code;
187 AFS_STATCNT(osi_Write);
189 osi_Panic("afs_osi_Write called with null param");
191 afile->offset = offset;
195 gop_rdwr(UIO_WRITE, afile->vnode, (caddr_t) aptr, asize,
196 afile->offset, AFS_UIOSYS, IO_UNIT, &afs_osi_cred,
201 code = asize - resid;
202 afile->offset += code;
207 (*afile->proc) (afile, code);
213 /* This work should be handled by physstrat in ca/machdep.c.
214 This routine written from the RT NFS port strategy routine.
215 It has been generalized a bit, but should still be pretty clear. */
217 afs_osi_MapStrategy(int (*aproc) (), register struct buf *bp)
219 afs_int32 returnCode;
221 AFS_STATCNT(osi_MapStrategy);
222 returnCode = (*aproc) (bp);
230 shutdown_osifile(void)
232 extern int afs_cold_shutdown;
234 AFS_STATCNT(shutdown_osifile);
235 if (afs_cold_shutdown) {
236 afs_osicred_initialized = 0;