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 */
19 int afs_osicred_initialized = 0;
20 afs_ucred_t afs_osi_cred;
21 afs_lock_t afs_xosi; /* lock is for tvattr */
22 extern struct osi_dev cacheDev;
23 extern struct mount *afs_cacheVfsp;
27 osi_UFSOpen(afs_dcache_id_t *ainode)
29 struct osi_file *afile;
31 extern int cacheDiskType;
34 AFS_STATCNT(osi_UFSOpen);
35 if (cacheDiskType != AFS_FCACHE_TYPE_UFS)
36 osi_Panic("UFSOpen called for non-UFS cache\n");
37 afile = (struct osi_file *)osi_AllocSmallSpace(sizeof(struct osi_file));
39 #if defined(AFS_FBSD50_ENV)
40 code = VFS_VGET(afs_cacheVfsp, (ino_t) ainode->ufs, LK_EXCLUSIVE, &vp);
42 code = VFS_VGET(afs_cacheVfsp, (ino_t) ainode->ufs, &vp);
45 if (code == 0 && vp->v_type == VNON)
48 osi_FreeSmallSpace(afile);
49 osi_Panic("UFSOpen: igetinode failed");
51 #if defined(AFS_FBSD80_ENV)
53 #elif defined(AFS_FBSD50_ENV)
54 VOP_UNLOCK(vp, 0, curthread);
56 VOP_UNLOCK(vp, 0, curproc);
59 afile->size = VTOI(vp)->i_size;
66 afs_osi_Stat(register struct osi_file *afile, register struct osi_stat *astat)
68 register afs_int32 code;
70 AFS_STATCNT(osi_Stat);
71 ObtainWriteLock(&afs_xosi, 320);
73 #if defined(AFS_FBSD80_ENV)
74 vn_lock(afile->vnode, LK_EXCLUSIVE | LK_RETRY);
75 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curthread);
76 VOP_UNLOCK(afile->vnode, 0);
77 #elif defined(AFS_FBSD50_ENV)
78 vn_lock(afile->vnode, LK_EXCLUSIVE | LK_RETRY, curthread);
79 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curthread);
80 VOP_UNLOCK(afile->vnode, LK_EXCLUSIVE, curthread);
82 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curproc);
86 astat->size = tvattr.va_size;
87 astat->mtime = tvattr.va_mtime.tv_sec;
88 astat->atime = tvattr.va_atime.tv_sec;
90 ReleaseWriteLock(&afs_xosi);
95 osi_UFSClose(register struct osi_file *afile)
97 AFS_STATCNT(osi_Close);
99 AFS_RELE(afile->vnode);
102 osi_FreeSmallSpace(afile);
107 osi_UFSTruncate(register struct osi_file *afile, afs_int32 asize)
111 register afs_int32 code, glocked;
112 AFS_STATCNT(osi_Truncate);
114 ObtainWriteLock(&afs_xosi, 321);
117 * This routine only shrinks files, and most systems
118 * have very slow truncates, even when the file is already
119 * small enough. Check now and save some time.
121 glocked = ISAFS_GLOCK();
124 #if defined(AFS_FBSD80_ENV)
125 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
126 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curthread);
127 #elif defined(AFS_FBSD50_ENV)
128 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, curthread);
129 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curthread);
131 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, curproc);
132 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curproc);
134 if (code != 0 || tvattr.va_size <= asize)
138 tvattr.va_size = asize;
139 #if defined(AFS_FBSD50_ENV)
140 code = VOP_SETATTR(vp, &tvattr, afs_osi_credp, curthread);
142 code = VOP_SETATTR(vp, &tvattr, afs_osi_credp, curproc);
146 #if defined(AFS_FBSD80_ENV)
148 #elif defined(AFS_FBSD50_ENV)
149 VOP_UNLOCK(vp, LK_EXCLUSIVE, curthread);
151 VOP_UNLOCK(vp, LK_EXCLUSIVE, curproc);
155 ReleaseWriteLock(&afs_xosi);
160 osi_DisableAtimes(struct vnode *avp)
162 struct inode *ip = VTOI(avp);
163 ip->i_flag &= ~IN_ACCESS;
167 /* Generic read interface */
169 afs_osi_Read(register struct osi_file *afile, int offset, void *aptr,
173 register afs_int32 code;
174 AFS_STATCNT(osi_Read);
177 * If the osi_file passed in is NULL, panic only if AFS is not shutting
178 * down. No point in crashing when we are already shutting down
181 if (!afs_shuttingdown)
182 osi_Panic("osi_Read called with null param");
188 afile->offset = offset;
191 gop_rdwr(UIO_READ, afile->vnode, (caddr_t) aptr, asize, afile->offset,
192 AFS_UIOSYS, IO_UNIT, afs_osi_credp, &resid);
195 code = asize - resid;
196 afile->offset += code;
197 osi_DisableAtimes(afile->vnode);
199 afs_Trace2(afs_iclSetp, CM_TRACE_READFAILED, ICL_TYPE_INT32, resid,
200 ICL_TYPE_INT32, code);
206 /* Generic write interface */
208 afs_osi_Write(register struct osi_file *afile, afs_int32 offset, void *aptr,
212 register afs_int32 code;
213 AFS_STATCNT(osi_Write);
215 osi_Panic("afs_osi_Write called with null param");
217 afile->offset = offset;
221 gop_rdwr(UIO_WRITE, afile->vnode, (caddr_t) aptr, asize,
222 afile->offset, AFS_UIOSYS, IO_UNIT, afs_osi_credp,
227 code = asize - resid;
228 afile->offset += code;
233 (*afile->proc) (afile, code);
239 /* This work should be handled by physstrat in ca/machdep.c.
240 This routine written from the RT NFS port strategy routine.
241 It has been generalized a bit, but should still be pretty clear. */
243 afs_osi_MapStrategy(int (*aproc) (), register struct buf *bp)
245 afs_int32 returnCode;
247 AFS_STATCNT(osi_MapStrategy);
248 returnCode = (*aproc) (bp);
256 shutdown_osifile(void)
258 AFS_STATCNT(shutdown_osifile);
259 if (afs_cold_shutdown) {
260 afs_osicred_initialized = 0;