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
17 #include <sys/condvar.h>
21 #include "sys/sema.h" /* for kcondvar_t */
28 #ifdef AFS_LINUX20_ENV
29 #ifndef _LINUX_CODA_FS_I
30 #define _LINUX_CODA_FS_I
32 struct coda_inode_info {
35 #ifndef _LINUX_XFS_FS_I
36 #define _LINUX_XFS_FS_I
37 struct xfs_inode_info {
44 #if defined(AFS_NBSD50_ENV)
45 # if !defined(DEF_CADDR_T)
46 typedef char * caddr_t;
52 /* this is just a dummy type decl, we're really using struct sockets here */
58 afs_int32 size; /* file size in bytes */
59 afs_int32 mtime; /* modification date */
60 afs_int32 atime; /* access time */
64 afs_int32 size; /* file size in bytes XXX Must be first field XXX */
65 #ifdef AFS_LINUX26_ENV
66 struct file *filp; /* May need this if we really open the file. */
68 #ifdef AFS_LINUX22_ENV
69 struct dentry dentry; /* merely to hold the pointer to the inode. */
70 struct file file; /* May need this if we really open the file. */
75 #if defined(AFS_HPUX102_ENV)
78 #if defined(AFS_AIX51_ENV) && defined(AFS_64BIT_KERNEL)
84 int (*proc) (struct osi_file * afile, afs_int32 code); /* proc, which, if not null, is called on writes */
85 char *rock; /* rock passed to proc */
87 int fd; /* file descriptor for user space files */
88 #endif /* defined(UKERNEL) */
92 #if defined(AFS_XBSD_ENV)
94 struct vnode *held_vnode;
95 #elif defined(AFS_AIX42_ENV)
102 struct afs_osi_WaitHandle {
104 struct cv wh_condvar;
107 caddr_t proc; /* process waiting */
111 #define osi_SetFileProc(x,p) ((x)->proc=(p))
112 #define osi_SetFileRock(x,r) ((x)->rock=(r))
113 #define osi_GetFileProc(x) ((x)->proc)
114 #define osi_GetFileRock(x) ((x)->rock)
117 #define osi_FlushText(vp) if (hcmp((vp)->f.m.DataVersion, (vp)->flushDV) > 0) \
118 osi_FlushText_really(vp)
120 #define osi_FlushText(vp)
124 #define AFSOP_STOP_RXEVENT 214 /* stop rx event deamon */
125 #define AFSOP_STOP_COMPLETE 215 /* afs has been shutdown */
126 #define AFSOP_STOP_RXK_LISTENER 217 /* stop rx listener daemon */
129 #define osi_NPACKETS 20 /* number of cluster pkts to alloc */
132 * Various definitions for osi_sleep and its event hash table
133 * DFBSD and SUNOS have no osi_sleep, and HPUX has its own hack for this stuff
135 #define AFS_EVHASHSIZE 128 /* size of afs_evhasht, must be power of 2 */
136 typedef struct afs_event {
137 struct afs_event *next; /* next in hash chain */
138 char *event; /* lwp event: an address */
139 int refcount; /* Is it in use? */
140 int seq; /* Sequence number: this is incremented
141 * by wakeup calls; wait will not return until
143 #if defined(AFS_AIX_ENV)
145 #elif defined(AFS_DARWIN_ENV)
146 #ifdef AFS_DARWIN80_ENV
151 #elif defined(AFS_FBSD_ENV) || defined(AFS_OBSD_ENV)
152 int cond; /* "all this gluck should probably be replaced by CVs" */
153 #elif defined(AFS_LINUX_ENV) || defined(AFS_LINUX24_ENV)
154 wait_queue_head_t cond;
155 #elif defined(AFS_NBSD_ENV) || defined(AFS_SOLARIS_ENV) || defined(AFS_SGI_ENV)
156 kcondvar_t cond; /* Currently associated condition variable */
159 extern afs_event_t *afs_evhasht[AFS_EVHASHSIZE]; /* Hash table for events */
160 extern void shutdown_osisleep(void);
164 * Default vnode related macros
166 * Darwin, all of the BSDs, and Linux have their own
168 #if !defined(AFS_DARWIN_ENV) && !defined(AFS_XBSD_ENV) && !defined(AFS_LINUX20_ENV)
169 # define vType(vc) (vc)->v.v_type
170 # define vSetType(vc,type) (vc)->v.v_type = (type)
171 # define vSetVfsp(vc,vfsp) (vc)->v.v_vfsp = (vfsp)
172 extern struct vnodeops *afs_ops;
173 # define IsAfsVnode(v) ((v)->v_op == afs_ops)
174 # define SetAfsVnode(v) (v)->v_op = afs_ops
178 extern int osi_TryEvictVCache(struct vcache *, int *, int);
179 extern struct vcache *osi_NewVnode(void);
180 extern void osi_PrePopulateVCache(struct vcache *);
181 extern void osi_PostPopulateVCache(struct vcache *);
182 extern void osi_AttachVnode(struct vcache *, int seq);
185 * In IRIX 6.5 and NetBSD we cannot have DEBUG turned on since certain
186 * system-defined structures are a different size with DEBUG on, the
187 * kernel is compiled without DEBUG on, and the resulting differences
188 * would break our ability to interact with the rest of the kernel.
190 * Is DEBUG only for turning the ASSERT() macro? If so, we should
191 * be able to eliminate DEBUG entirely.
193 #if !defined(AFS_SGI65_ENV) && !defined(AFS_NBSD_ENV)
195 #define DEBUG 1 /* Default is to enable debugging/logging */
200 * Time related macros
202 #define osi_GetuTime(x) osi_GetTime(x)
204 /* osi_timeval_t exists because SGI 6.x has two sizes of timeval. */
205 /** In 64 bit Solaris the timeval structure has members that are 64 bit
206 * In the GetTime() interface we expect pointers to afs_int32. So the need to
207 * define osi_timeval_t to have 32 bit members. To make this less ambiguous
208 * we now use 32 bit quantities consistently all over the code.
209 * In 64 bit HP-UX the timeval structure has a 64 bit member.
212 #if defined(AFS_HPUX_ENV) || defined(AFS_LINUX_64BIT_KERNEL) || (defined(AFS_SGI61_ENV) && defined(KERNEL) && defined(_K64U64))
221 #elif defined(AFS_SUN5_ENV)
222 typedef struct timeval32 osi_timeval_t;
223 typedef struct timeval32 osi_timeval32_t;
225 typedef struct timeval osi_timeval_t;
226 typedef struct timeval osi_timeval32_t;
227 #endif /* AFS_SGI61_ENV */
230 #define osi_getpid() getpid()
234 * osi_ThreadUnique() should yield a value that can be found in ps
235 * output in order to draw correspondences between ICL traces and what
236 * is going on in the system. So if ps cannot show thread IDs it is
237 * likely to be the process ID instead.
240 /* should use curthread, but 'ps' can't display it */
241 #define osi_ThreadUnique() (curproc->p_pid)
242 #elif defined(AFS_LINUX_ENV)
243 #define osi_ThreadUnique() (current->pid)
244 #elif defined(UKERNEL)
245 #define osi_ThreadUnique() osi_getpid()
247 #define osi_ThreadUnique() getpid()
252 #ifdef AFS_GLOBAL_SUNLOCK
253 #define AFS_ASSERT_GLOCK() \
254 do { if (!ISAFS_GLOCK()) osi_Panic("afs global lock not held at %s:%d\n", __FILE__, __LINE__); } while (0)
255 #endif /* AFS_GLOBAL_SUNLOCK */
257 #ifdef RX_ENABLE_LOCKS
258 #define RX_AFS_GLOCK() AFS_GLOCK()
259 #define RX_AFS_GUNLOCK() AFS_GUNLOCK()
261 #define RX_AFS_GLOCK()
262 #define RX_AFS_GUNLOCK()
269 #define AFS_GUNLOCK()
270 #define ISAFS_GLOCK() 1
271 #define AFS_ASSERT_GLOCK()
274 /* On an MP that uses multithreading, splnet is not sufficient to provide
275 * mutual exclusion because the other processors will not see it. On some
276 * early multiprocessors (SunOS413 & SGI5.2) splnet actually obtains a global
277 * mutex, which this works in the UP expected way, it means that the whole MP
278 * can only take one interrupt at a time; a serious performance penalty. */
280 #if ((defined(AFS_GLOBAL_SUNLOCK) || defined(RX_ENABLE_LOCKS)) && !defined(AFS_HPUX_ENV)) || !defined(KERNEL)
287 * vnode/vcache ref count manipulation
290 #define AFS_RELE(vp) do { VN_RELE(vp); } while (0)
291 #else /* defined(UKERNEL) */
292 #define AFS_RELE(vp) do { AFS_GUNLOCK(); VN_RELE(vp); AFS_GLOCK(); } while (0)
293 #endif /* defined(UKERNEL) */
296 * For some reason we do bare refcount manipulation in some places, for some
297 * platforms. The assumption is apparently that either we wouldn't call
298 * afs_inactive anyway (because we know the ref count is high), or that it's
299 * OK not to call it (because we don't expect CUnlinked or CDirty).
300 * (Also, of course, the vnode is assumed to be one of ours. Can't use this
301 * macro for V-file vnodes.)
303 /* osi_vnhold is defined in PLATFORM/osi_machdep.h */
304 #define AFS_FAST_HOLD(vp) osi_vnhold((vp), 0)
307 #define AFS_FAST_RELE(vp) VREFCOUNT_DEC(vp)
309 #define AFS_FAST_RELE(vp) AFS_RELE(AFSTOV(vp))
313 * MP safe versions of routines to copy memory between user space
314 * and kernel space. Call these to avoid taking page faults while
315 * holding the global lock.
317 #if defined(CAST_USER_ADDR_T) && !defined(UKERNEL) && !defined(AFS_DARWIN100_ENV)
318 #define __U(X) CAST_USER_ADDR_T((X))
322 #ifdef AFS_GLOBAL_SUNLOCK
324 #define AFS_COPYIN(SRC,DST,LEN,CODE) \
326 int haveGlock = ISAFS_GLOCK(); \
329 CODE = copyin(__U((SRC)),(DST),(LEN)); \
334 #define AFS_COPYINSTR(SRC,DST,LEN,CNT,CODE) \
336 int haveGlock = ISAFS_GLOCK(); \
339 CODE = copyinstr(__U((SRC)),(DST),(LEN),(CNT)); \
344 #define AFS_COPYOUT(SRC,DST,LEN,CODE) \
346 int haveGlock = ISAFS_GLOCK(); \
349 CODE = copyout((SRC),__U((DST)),(LEN)); \
354 #if defined(AFS_DARWIN80_ENV)
355 #define AFS_UIOMOVE(SRC,LEN,RW,UIO,CODE) \
357 int haveGlock = ISAFS_GLOCK(); \
360 uio_setrw((UIO),(RW)); \
361 CODE = uiomove((SRC),(LEN),(UIO)); \
366 #if defined(AFS_DARWIN_ENV) || defined(AFS_XBSD_ENV)
367 #define AFS_UIOMOVE(SRC,LEN,RW,UIO,CODE) \
369 int haveGlock = ISAFS_GLOCK(); \
372 (UIO)->uio_rw = (RW); \
373 CODE = uiomove((SRC),(LEN),(UIO)); \
378 #define AFS_UIOMOVE(SRC,LEN,RW,UIO,CODE) \
380 int haveGlock = ISAFS_GLOCK(); \
383 CODE = uiomove((SRC),(LEN),(RW),(UIO)); \
388 #endif /* AFS_DARWIN80_ENV */
390 #else /* AFS_GLOBAL_SUNLOCK */
392 #define AFS_COPYIN(SRC,DST,LEN,CODE) \
394 CODE = copyin(__U((SRC)),(DST),(LEN)); \
397 #define AFS_COPYINSTR(SRC,DST,LEN,CNT,CODE) \
399 CODE = copyinstr(__U((SRC)),(DST),(LEN),(CNT)); \
402 #define AFS_COPYOUT(SRC,DST,LEN,CODE) \
404 CODE = copyout((SRC),__U((DST)),(LEN)); \
407 #if defined(AFS_DARWIN80_ENV)
408 #define AFS_UIOMOVE(SRC,LEN,RW,UIO,CODE) \
410 uio_setrw((UIO),(RW)); \
411 CODE = uiomove((SRC),(LEN),(UIO)); \
413 #elif defined(AFS_DARWIN_ENV) || (defined(AFS_XBSD_ENV) && !defined(AFS_NBSD40_ENV))
414 #define AFS_UIOMOVE(SRC,LEN,RW,UIO,CODE) \
416 (UIO)->uio_rw = (RW); \
417 CODE = uiomove((SRC),(LEN),(UIO)); \
420 #define AFS_UIOMOVE(SRC,LEN,RW,UIO,CODE) \
422 CODE = uiomove((SRC),(LEN),(RW),(UIO)); \
426 #endif /* AFS_GLOBAL_SUNLOCK */
428 #ifdef AFS_DARWIN80_ENV
429 #define AFS_UIO_OFFSET(uio) uio_offset(uio)
430 #define AFS_UIO_RESID(uio) (int)uio_resid(uio)
431 #define AFS_UIO_SETOFFSET(uio, off) uio_setoffset(uio, off)
432 #define AFS_UIO_SETRESID(uio, val) uio_setresid(uio, val)
434 #define AFS_UIO_OFFSET(uio) (uio)->uio_offset
435 #define AFS_UIO_RESID(uio) (uio)->uio_resid
436 #define AFS_UIO_SETOFFSET(uio, off) (uio)->uio_offset = off
437 #define AFS_UIO_SETRESID(uio, val) (uio)->uio_resid = val
442 * encapsulation of kernel data structure accesses
445 #define setuerror(erval) u.u_error = (erval)
446 #define getuerror() u.u_error
449 /* Macros for vcache/vnode and vfs arguments to vnode and vfs ops.
450 * These are required for IRIX 6.4 and later, which pass behavior pointers.
451 * Note that the _CONVERT routines get the ";" here so that argument lists
452 * can have arguments after the OSI_x_CONVERT macro is called.
454 #define OSI_VN_ARG(V) V
455 #define OSI_VN_DECL(V) struct vnode *V
456 #define OSI_VN_CONVERT(V)
457 #define OSI_VC_ARG(V) V
458 #define OSI_VC_DECL(V) struct vcache *V
459 #define OSI_VC_CONVERT(V)
460 #define OSI_VFS_ARG(V) V
461 #define OSI_VFS_DECL(V) struct vfs *V
462 #define OSI_VFS_CONVERT(V)
466 ** Macro for Solaris 2.6 returns 1 if file is larger than 2GB; else returns 0
468 #define AfsLargeFileUio(uio) 0
469 #define AfsLargeFileSize(pos, off) 0
471 /* Now include system specific OSI header file. It will redefine macros
472 * defined here as required by the OS.
474 #include "osi_machdep.h"
476 /* Declare any structures which use these macros after the OSI implementation
477 * has had the opportunity to redefine them.
479 extern afs_ucred_t afs_osi_cred, *afs_osi_credp;
482 #define osi_curcred() (u.u_cred)
485 #endif /* _AFS_OSI_ */