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 #ifndef AFS_FBSD80_ENV /* cr_groups is now malloc()'d */
21 afs_ucred_t 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;
68 afs_osi_Stat(register struct osi_file *afile, register struct osi_stat *astat)
70 register afs_int32 code;
72 AFS_STATCNT(osi_Stat);
73 ObtainWriteLock(&afs_xosi, 320);
75 #if defined(AFS_FBSD80_ENV)
76 vn_lock(afile->vnode, LK_EXCLUSIVE | LK_RETRY);
77 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp);
78 VOP_UNLOCK(afile->vnode, 0);
79 #elif defined(AFS_FBSD50_ENV)
80 vn_lock(afile->vnode, LK_EXCLUSIVE | LK_RETRY, curthread);
81 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curthread);
82 VOP_UNLOCK(afile->vnode, LK_EXCLUSIVE, curthread);
84 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curproc);
88 astat->size = tvattr.va_size;
89 astat->mtime = tvattr.va_mtime.tv_sec;
90 astat->atime = tvattr.va_atime.tv_sec;
92 ReleaseWriteLock(&afs_xosi);
97 osi_UFSClose(register struct osi_file *afile)
99 AFS_STATCNT(osi_Close);
101 AFS_RELE(afile->vnode);
104 osi_FreeSmallSpace(afile);
109 osi_UFSTruncate(register struct osi_file *afile, afs_int32 asize)
113 register afs_int32 code, glocked;
114 AFS_STATCNT(osi_Truncate);
116 ObtainWriteLock(&afs_xosi, 321);
119 * This routine only shrinks files, and most systems
120 * have very slow truncates, even when the file is already
121 * small enough. Check now and save some time.
123 glocked = ISAFS_GLOCK();
126 #if defined(AFS_FBSD80_ENV)
127 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
128 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp);
129 #elif defined(AFS_FBSD50_ENV)
130 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, curthread);
131 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curthread);
133 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, curproc);
134 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curproc);
136 if (code != 0 || tvattr.va_size <= asize)
140 tvattr.va_size = asize;
141 #if defined(AFS_FBSD80_ENV)
142 code = VOP_SETATTR(vp, &tvattr, afs_osi_credp);
143 #elif defined(AFS_FBSD50_ENV)
144 code = VOP_SETATTR(vp, &tvattr, afs_osi_credp, curthread);
146 code = VOP_SETATTR(vp, &tvattr, afs_osi_credp, curproc);
150 #if defined(AFS_FBSD80_ENV)
152 #elif defined(AFS_FBSD50_ENV)
153 VOP_UNLOCK(vp, LK_EXCLUSIVE, curthread);
155 VOP_UNLOCK(vp, LK_EXCLUSIVE, curproc);
159 ReleaseWriteLock(&afs_xosi);
164 osi_DisableAtimes(struct vnode *avp)
166 struct inode *ip = VTOI(avp);
167 ip->i_flag &= ~IN_ACCESS;
171 /* Generic read interface */
173 afs_osi_Read(register struct osi_file *afile, int offset, void *aptr,
177 register afs_int32 code;
178 AFS_STATCNT(osi_Read);
181 * If the osi_file passed in is NULL, panic only if AFS is not shutting
182 * down. No point in crashing when we are already shutting down
185 if (!afs_shuttingdown)
186 osi_Panic("osi_Read called with null param");
192 afile->offset = offset;
195 gop_rdwr(UIO_READ, afile->vnode, (caddr_t) aptr, asize, afile->offset,
196 AFS_UIOSYS, IO_UNIT, afs_osi_credp, &resid);
199 code = asize - resid;
200 afile->offset += code;
201 osi_DisableAtimes(afile->vnode);
203 afs_Trace2(afs_iclSetp, CM_TRACE_READFAILED, ICL_TYPE_INT32, resid,
204 ICL_TYPE_INT32, code);
210 /* Generic write interface */
212 afs_osi_Write(register struct osi_file *afile, afs_int32 offset, void *aptr,
216 register afs_int32 code;
217 AFS_STATCNT(osi_Write);
219 osi_Panic("afs_osi_Write called with null param");
221 afile->offset = offset;
225 gop_rdwr(UIO_WRITE, afile->vnode, (caddr_t) aptr, asize,
226 afile->offset, AFS_UIOSYS, IO_UNIT, afs_osi_credp,
231 code = asize - resid;
232 afile->offset += code;
237 (*afile->proc) (afile, code);
243 /* This work should be handled by physstrat in ca/machdep.c.
244 This routine written from the RT NFS port strategy routine.
245 It has been generalized a bit, but should still be pretty clear. */
247 afs_osi_MapStrategy(int (*aproc) (), register struct buf *bp)
249 afs_int32 returnCode;
251 AFS_STATCNT(osi_MapStrategy);
252 returnCode = (*aproc) (bp);
260 shutdown_osifile(void)
262 AFS_STATCNT(shutdown_osifile);
263 if (afs_cold_shutdown) {
264 afs_osicred_initialized = 0;