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 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;
62 afile->inum = ainode->ufs; /* for hint validity checking */
67 afs_osi_Stat(register struct osi_file *afile, register struct osi_stat *astat)
69 register afs_int32 code;
71 AFS_STATCNT(osi_Stat);
72 MObtainWriteLock(&afs_xosi, 320);
74 #if defined(AFS_FBSD80_ENV)
75 vn_lock(afile->vnode, LK_EXCLUSIVE | LK_RETRY);
76 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curthread);
77 VOP_UNLOCK(afile->vnode, 0);
78 #elif defined(AFS_FBSD50_ENV)
79 vn_lock(afile->vnode, LK_EXCLUSIVE | LK_RETRY, curthread);
80 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curthread);
81 VOP_UNLOCK(afile->vnode, LK_EXCLUSIVE, curthread);
83 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curproc);
87 astat->size = tvattr.va_size;
88 astat->mtime = tvattr.va_mtime.tv_sec;
89 astat->atime = tvattr.va_atime.tv_sec;
91 MReleaseWriteLock(&afs_xosi);
96 osi_UFSClose(register struct osi_file *afile)
98 AFS_STATCNT(osi_Close);
100 AFS_RELE(afile->vnode);
103 osi_FreeSmallSpace(afile);
108 osi_UFSTruncate(register struct osi_file *afile, afs_int32 asize)
112 register afs_int32 code, glocked;
113 AFS_STATCNT(osi_Truncate);
115 MObtainWriteLock(&afs_xosi, 321);
118 * This routine only shrinks files, and most systems
119 * have very slow truncates, even when the file is already
120 * small enough. Check now and save some time.
122 glocked = ISAFS_GLOCK();
125 #if defined(AFS_FBSD80_ENV)
126 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
127 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curthread);
128 #elif defined(AFS_FBSD50_ENV)
129 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, curthread);
130 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curthread);
132 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, curproc);
133 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curproc);
135 if (code != 0 || tvattr.va_size <= asize)
139 tvattr.va_size = asize;
140 #if defined(AFS_FBSD50_ENV)
141 code = VOP_SETATTR(vp, &tvattr, afs_osi_credp, curthread);
143 code = VOP_SETATTR(vp, &tvattr, afs_osi_credp, curproc);
147 #if defined(AFS_FBSD80_ENV)
149 #elif defined(AFS_FBSD50_ENV)
150 VOP_UNLOCK(vp, LK_EXCLUSIVE, curthread);
152 VOP_UNLOCK(vp, LK_EXCLUSIVE, curproc);
156 MReleaseWriteLock(&afs_xosi);
161 osi_DisableAtimes(struct vnode *avp)
163 struct inode *ip = VTOI(avp);
164 ip->i_flag &= ~IN_ACCESS;
168 /* Generic read interface */
170 afs_osi_Read(register struct osi_file *afile, int offset, void *aptr,
174 register afs_int32 code;
175 AFS_STATCNT(osi_Read);
178 * If the osi_file passed in is NULL, panic only if AFS is not shutting
179 * down. No point in crashing when we are already shutting down
182 if (!afs_shuttingdown)
183 osi_Panic("osi_Read called with null param");
189 afile->offset = offset;
192 gop_rdwr(UIO_READ, afile->vnode, (caddr_t) aptr, asize, afile->offset,
193 AFS_UIOSYS, IO_UNIT, afs_osi_credp, &resid);
196 code = asize - resid;
197 afile->offset += code;
198 osi_DisableAtimes(afile->vnode);
200 afs_Trace2(afs_iclSetp, CM_TRACE_READFAILED, ICL_TYPE_INT32, resid,
201 ICL_TYPE_INT32, code);
207 /* Generic write interface */
209 afs_osi_Write(register struct osi_file *afile, afs_int32 offset, void *aptr,
213 register afs_int32 code;
214 AFS_STATCNT(osi_Write);
216 osi_Panic("afs_osi_Write called with null param");
218 afile->offset = offset;
222 gop_rdwr(UIO_WRITE, afile->vnode, (caddr_t) aptr, asize,
223 afile->offset, AFS_UIOSYS, IO_UNIT, afs_osi_credp,
228 code = asize - resid;
229 afile->offset += code;
234 (*afile->proc) (afile, code);
240 /* This work should be handled by physstrat in ca/machdep.c.
241 This routine written from the RT NFS port strategy routine.
242 It has been generalized a bit, but should still be pretty clear. */
244 afs_osi_MapStrategy(int (*aproc) (), register struct buf *bp)
246 afs_int32 returnCode;
248 AFS_STATCNT(osi_MapStrategy);
249 returnCode = (*aproc) (bp);
257 shutdown_osifile(void)
259 AFS_STATCNT(shutdown_osifile);
260 if (afs_cold_shutdown) {
261 afs_osicred_initialized = 0;