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)
56 VOP_UNLOCK(vp, 0, curthread);
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);
76 VOP_UNLOCK(afile->vnode, 0);
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);
84 astat->size = tvattr.va_size;
85 astat->mtime = tvattr.va_mtime.tv_sec;
86 astat->atime = tvattr.va_atime.tv_sec;
88 ReleaseWriteLock(&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)
109 register afs_int32 code, glocked;
110 AFS_STATCNT(osi_Truncate);
112 ObtainWriteLock(&afs_xosi, 321);
115 * This routine only shrinks files, and most systems
116 * have very slow truncates, even when the file is already
117 * small enough. Check now and save some time.
119 glocked = ISAFS_GLOCK();
122 #if defined(AFS_FBSD80_ENV)
123 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
124 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp);
126 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, curthread);
127 code = VOP_GETATTR(afile->vnode, &tvattr, afs_osi_credp, curthread);
129 if (code != 0 || tvattr.va_size <= asize)
133 tvattr.va_size = asize;
134 #if defined(AFS_FBSD80_ENV)
135 code = VOP_SETATTR(vp, &tvattr, afs_osi_credp);
137 code = VOP_SETATTR(vp, &tvattr, afs_osi_credp, curthread);
141 #if defined(AFS_FBSD80_ENV)
144 VOP_UNLOCK(vp, LK_EXCLUSIVE, curthread);
148 ReleaseWriteLock(&afs_xosi);
153 osi_DisableAtimes(struct vnode *avp)
155 struct inode *ip = VTOI(avp);
156 ip->i_flag &= ~IN_ACCESS;
160 /* Generic read interface */
162 afs_osi_Read(register struct osi_file *afile, int offset, void *aptr,
166 register afs_int32 code;
167 AFS_STATCNT(osi_Read);
170 * If the osi_file passed in is NULL, panic only if AFS is not shutting
171 * down. No point in crashing when we are already shutting down
174 if (!afs_shuttingdown)
175 osi_Panic("osi_Read called with null param");
181 afile->offset = offset;
184 gop_rdwr(UIO_READ, afile->vnode, (caddr_t) aptr, asize, afile->offset,
185 AFS_UIOSYS, IO_UNIT, afs_osi_credp, &resid);
188 code = asize - resid;
189 afile->offset += code;
190 osi_DisableAtimes(afile->vnode);
192 afs_Trace2(afs_iclSetp, CM_TRACE_READFAILED, ICL_TYPE_INT32, resid,
193 ICL_TYPE_INT32, code);
199 /* Generic write interface */
201 afs_osi_Write(register struct osi_file *afile, afs_int32 offset, void *aptr,
205 register afs_int32 code;
206 AFS_STATCNT(osi_Write);
208 osi_Panic("afs_osi_Write called with null param");
210 afile->offset = offset;
214 gop_rdwr(UIO_WRITE, afile->vnode, (caddr_t) aptr, asize,
215 afile->offset, AFS_UIOSYS, IO_UNIT, afs_osi_credp,
220 code = asize - resid;
221 afile->offset += code;
226 (*afile->proc) (afile, code);
232 /* This work should be handled by physstrat in ca/machdep.c.
233 This routine written from the RT NFS port strategy routine.
234 It has been generalized a bit, but should still be pretty clear. */
236 afs_osi_MapStrategy(int (*aproc) (), register struct buf *bp)
238 afs_int32 returnCode;
240 AFS_STATCNT(osi_MapStrategy);
241 returnCode = (*aproc) (bp);
249 shutdown_osifile(void)
251 AFS_STATCNT(shutdown_osifile);
252 if (afs_cold_shutdown) {
253 afs_osicred_initialized = 0;