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"
16 #include "afs/sysincludes.h" /* Standard vendor system headers */
17 #include "afsincludes.h" /* Afs-based standard headers */
18 #include "afs/afs_stats.h" /* afs statistics */
21 int afs_osicred_initialized = 0;
22 struct AFS_UCRED afs_osi_cred;
23 afs_lock_t afs_xosi; /* lock is for tvattr */
24 extern struct osi_dev cacheDev;
25 extern struct mount *afs_cacheVfsp;
29 osi_UFSOpen(afs_dcache_id_t *ainode)
31 struct osi_file *afile;
33 extern int cacheDiskType;
36 AFS_STATCNT(osi_UFSOpen);
37 if (cacheDiskType != AFS_FCACHE_TYPE_UFS)
38 osi_Panic("UFSOpen called for non-UFS cache\n");
39 afile = (struct osi_file *)osi_AllocSmallSpace(sizeof(struct osi_file));
41 #if defined(AFS_FBSD50_ENV)
42 code = VFS_VGET(afs_cacheVfsp, (ino_t) ainode->ufs, LK_EXCLUSIVE, &vp);
44 code = VFS_VGET(afs_cacheVfsp, (ino_t) ainode->ufs, &vp);
47 if (code == 0 && vp->v_type == VNON)
50 osi_FreeSmallSpace(afile);
51 osi_Panic("UFSOpen: igetinode failed");
53 #if defined(AFS_FBSD80_ENV)
55 #elif defined(AFS_FBSD50_ENV)
56 VOP_UNLOCK(vp, 0, curthread);
58 VOP_UNLOCK(vp, 0, curproc);
61 afile->size = VTOI(vp)->i_size;
64 afile->inum = ainode->ufs; /* 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_FBSD80_ENV)
77 vn_lock(afile->vnode, LK_EXCLUSIVE | LK_RETRY);
78 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curthread);
79 VOP_UNLOCK(afile->vnode, 0);
80 #elif defined(AFS_FBSD50_ENV)
81 vn_lock(afile->vnode, LK_EXCLUSIVE | LK_RETRY, curthread);
82 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curthread);
83 VOP_UNLOCK(afile->vnode, LK_EXCLUSIVE, curthread);
85 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curproc);
89 astat->size = tvattr.va_size;
90 astat->mtime = tvattr.va_mtime.tv_sec;
91 astat->atime = tvattr.va_atime.tv_sec;
93 MReleaseWriteLock(&afs_xosi);
98 osi_UFSClose(register struct osi_file *afile)
100 AFS_STATCNT(osi_Close);
102 AFS_RELE(afile->vnode);
105 osi_FreeSmallSpace(afile);
110 osi_UFSTruncate(register struct osi_file *afile, afs_int32 asize)
114 register afs_int32 code, glocked;
115 AFS_STATCNT(osi_Truncate);
117 MObtainWriteLock(&afs_xosi, 321);
120 * This routine only shrinks files, and most systems
121 * have very slow truncates, even when the file is already
122 * small enough. Check now and save some time.
124 glocked = ISAFS_GLOCK();
127 #if defined(AFS_FBSD80_ENV)
128 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
129 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curthread);
130 #elif defined(AFS_FBSD50_ENV)
131 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, curthread);
132 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curthread);
134 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, curproc);
135 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curproc);
137 if (code != 0 || tvattr.va_size <= asize)
141 tvattr.va_size = asize;
142 #if defined(AFS_FBSD50_ENV)
143 code = VOP_SETATTR(vp, &tvattr, afs_osi_credp, curthread);
145 code = VOP_SETATTR(vp, &tvattr, afs_osi_credp, curproc);
149 #if defined(AFS_FBSD80_ENV)
151 #elif defined(AFS_FBSD50_ENV)
152 VOP_UNLOCK(vp, LK_EXCLUSIVE, curthread);
154 VOP_UNLOCK(vp, LK_EXCLUSIVE, curproc);
158 MReleaseWriteLock(&afs_xosi);
163 osi_DisableAtimes(struct vnode *avp)
165 struct inode *ip = VTOI(avp);
166 ip->i_flag &= ~IN_ACCESS;
170 /* Generic read interface */
172 afs_osi_Read(register struct osi_file *afile, int offset, void *aptr,
176 register afs_int32 code;
177 AFS_STATCNT(osi_Read);
180 * If the osi_file passed in is NULL, panic only if AFS is not shutting
181 * down. No point in crashing when we are already shutting down
184 if (!afs_shuttingdown)
185 osi_Panic("osi_Read called with null param");
191 afile->offset = offset;
194 gop_rdwr(UIO_READ, afile->vnode, (caddr_t) aptr, asize, afile->offset,
195 AFS_UIOSYS, IO_UNIT, afs_osi_credp, &resid);
198 code = asize - resid;
199 afile->offset += code;
200 osi_DisableAtimes(afile->vnode);
202 afs_Trace2(afs_iclSetp, CM_TRACE_READFAILED, ICL_TYPE_INT32, resid,
203 ICL_TYPE_INT32, code);
209 /* Generic write interface */
211 afs_osi_Write(register struct osi_file *afile, afs_int32 offset, void *aptr,
215 register afs_int32 code;
216 AFS_STATCNT(osi_Write);
218 osi_Panic("afs_osi_Write called with null param");
220 afile->offset = offset;
224 gop_rdwr(UIO_WRITE, afile->vnode, (caddr_t) aptr, asize,
225 afile->offset, AFS_UIOSYS, IO_UNIT, afs_osi_credp,
230 code = asize - resid;
231 afile->offset += code;
236 (*afile->proc) (afile, code);
242 /* This work should be handled by physstrat in ca/machdep.c.
243 This routine written from the RT NFS port strategy routine.
244 It has been generalized a bit, but should still be pretty clear. */
246 afs_osi_MapStrategy(int (*aproc) (), register struct buf *bp)
248 afs_int32 returnCode;
250 AFS_STATCNT(osi_MapStrategy);
251 returnCode = (*aproc) (bp);
259 shutdown_osifile(void)
261 AFS_STATCNT(shutdown_osifile);
262 if (afs_cold_shutdown) {
263 afs_osicred_initialized = 0;