![[BACK]](/icons/back.gif){kind=icon}
Return to vnode_if.src CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / sys / kern|
Return to vnode_if.src CVS log | Up to [local] / sys / kern |
1.1 nbrk 1: # $OpenBSD: vnode_if.src,v 1.32 2007/01/16 17:52:18 thib Exp $
2: # $NetBSD: vnode_if.src,v 1.10 1996/05/11 18:26:27 mycroft Exp $
3: #
4: # Copyright (c) 1992, 1993
5: # The Regents of the University of California. All rights reserved.
6: #
7: # Redistribution and use in source and binary forms, with or without
8: # modification, are permitted provided that the following conditions
9: # are met:
10: # 1. Redistributions of source code must retain the above copyright
11: # notice, this list of conditions and the following disclaimer.
12: # 2. Redistributions in binary form must reproduce the above copyright
13: # notice, this list of conditions and the following disclaimer in the
14: # documentation and/or other materials provided with the distribution.
15: # 3. Neither the name of the University nor the names of its contributors
16: # may be used to endorse or promote products derived from this software
17: # without specific prior written permission.
18: #
19: # THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20: # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21: # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22: # ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23: # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24: # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25: # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26: # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27: # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28: # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29: # SUCH DAMAGE.
30: #
31: # @(#)vnode_if.src 8.3 (Berkeley) 2/3/94
32: #
33:
34:
35: #
36: # Above each of the vop descriptors is a specification of the locking
37: # protocol used by each vop call. The first column is the name of
38: # the variable, the remaining three columns are in, out and error
39: # respectively. The "in" column defines the lock state on input,
40: # the "out" column defines the state on successful return, and the
41: # "error" column defines the locking state on error exit.
42: #
43: # The locking value can take the following values:
44: # L: locked.
45: # U: unlocked/
46: # -: not applicable. vnode does not yet (or no longer) exists.
47: # =: the same on input and output, may be either L or U.
48: # X: locked if not nil.
49: #
50:
51:
52: #
53: #% islocked vp = = =
54: #
55: vop_islocked {
56: IN struct vnode *vp;
57: };
58:
59: #
60: #% lookup dvp L ? ?
61: #% lookup vpp - L -
62: #
63: #
64: # Note that EJUSTRETURN is not considered an error condition for locking
65: # purposes.
66: #
67: # if both ISLASTCN and LOCKPARENT are set in cnp->cn_flags then
68: #
69: # dvp L L L*
70: #
71: # otherwise,
72: #
73: # dvp L U L*
74: #
75: # * The lock state on return is indeterminate since the lookup implementations
76: # unlock and relock the vnode (an operation which is not guaranteed to
77: # succeed). However, these types of failures should be rare. Unfortunately,
78: # they are currently undetectable.
79: #
80:
81: vop_lookup {
82: IN struct vnode *dvp;
83: INOUT struct vnode **vpp;
84: IN struct componentname *cnp;
85: };
86:
87: #
88: #% create dvp L U U
89: #% create vpp - L -
90: #
91:
92: vop_create {
93: IN SHOULDBELOCKED WILLPUT struct vnode *dvp;
94: OUT struct vnode **vpp;
95: IN struct componentname *cnp;
96: IN struct vattr *vap;
97: };
98:
99: #
100: #% mknod dvp L U U
101: #% mknod vpp - X -
102: #
103:
104: vop_mknod {
105: IN SHOULDBELOCKED WILLPUT struct vnode *dvp;
106: OUT WILLRELE struct vnode **vpp;
107: IN struct componentname *cnp;
108: IN struct vattr *vap;
109: };
110:
111: #
112: #% open vp = = =
113: #
114:
115: vop_open {
116: IN struct vnode *vp;
117: IN int mode;
118: IN struct ucred *cred;
119: IN struct proc *p;
120: };
121:
122: #
123: #% close vp L L L
124: #
125:
126: vop_close {
127: IN SHOULDBELOCKED struct vnode *vp;
128: IN int fflag;
129: IN struct ucred *cred;
130: IN struct proc *p;
131: };
132:
133: #
134: #% access vp L L L
135: #
136:
137: vop_access {
138: IN SHOULDBELOCKED struct vnode *vp;
139: IN int mode;
140: IN struct ucred *cred;
141: IN struct proc *p;
142: };
143:
144: #
145: #% getattr vp = = =
146: #
147:
148: vop_getattr {
149: IN struct vnode *vp;
150: IN struct vattr *vap;
151: IN struct ucred *cred;
152: IN struct proc *p;
153: };
154:
155:
156: #
157: #% setattr vp L L L
158: #
159:
160: vop_setattr {
161: IN SHOULDBELOCKED struct vnode *vp;
162: IN struct vattr *vap;
163: IN struct ucred *cred;
164: IN struct proc *p;
165: };
166:
167: #
168: #% read vp L L L
169: #
170:
171: vop_read {
172: IN SHOULDBELOCKED struct vnode *vp;
173: INOUT struct uio *uio;
174: IN int ioflag;
175: IN struct ucred *cred;
176: };
177:
178: #
179: #% write vp L L L
180: #
181:
182: vop_write {
183: IN SHOULDBELOCKED struct vnode *vp;
184: INOUT struct uio *uio;
185: IN int ioflag;
186: IN struct ucred *cred;
187: };
188:
189: #
190: #% ioctl vp U U U
191: #
192:
193: vop_ioctl {
194: IN struct vnode *vp;
195: IN u_long command;
196: IN void *data;
197: IN int fflag;
198: IN struct ucred *cred;
199: IN struct proc *p;
200: };
201:
202: #
203: #% poll vp U U U
204: #
205: vop_poll {
206: IN struct vnode *vp;
207: IN int events;
208: IN struct proc *p;
209: };
210:
211: #
212: #% kqfilter vp U U U
213: #
214: vop_kqfilter {
215: IN struct vnode *vp;
216: IN struct knote *kn;
217: };
218:
219: #
220: #% revoke vp U U U
221: #
222: vop_revoke {
223: IN struct vnode *vp;
224: IN int flags;
225: };
226:
227: #
228: #% fsync vp L L L
229: #
230: vop_fsync {
231: IN SHOULDBELOCKED struct vnode *vp;
232: IN struct ucred *cred;
233: IN int waitfor;
234: IN struct proc *p;
235: };
236:
237: #
238: #% remove dvp L U U
239: #% remove vp L U U
240: #
241:
242: vop_remove {
243: IN SHOULDBELOCKED WILLPUT struct vnode *dvp;
244: IN SHOULDBELOCKED WILLPUT struct vnode *vp;
245: IN struct componentname *cnp;
246: };
247:
248: #
249: #% link dvp L U U
250: #% link vp U U U
251: #
252: vop_link {
253: IN SHOULDBELOCKED WILLPUT struct vnode *dvp;
254: IN struct vnode *vp;
255: IN struct componentname *cnp;
256: };
257:
258: #
259: #% rename fdvp U U U
260: #% rename fvp U U U
261: #% rename tdvp L U U
262: #% rename tvp X U U
263: #
264:
265: vop_rename {
266: IN WILLRELE struct vnode *fdvp;
267: IN WILLRELE struct vnode *fvp;
268: IN struct componentname *fcnp;
269: IN SHOULDBELOCKED WILLPUT struct vnode *tdvp;
270: IN WILLRELE struct vnode *tvp;
271: IN struct componentname *tcnp;
272: };
273:
274: #
275: #% mkdir dvp L U U
276: #% mkdir vpp - L -
277: #
278:
279: vop_mkdir {
280: IN SHOULDBELOCKED WILLPUT struct vnode *dvp;
281: OUT struct vnode **vpp;
282: IN struct componentname *cnp;
283: IN struct vattr *vap;
284: };
285:
286: #
287: #% rmdir dvp L U U
288: #% rmdir vp L U U
289: #
290:
291: vop_rmdir {
292: IN SHOULDBELOCKED WILLPUT struct vnode *dvp;
293: IN SHOULDBELOCKED WILLPUT struct vnode *vp;
294: IN struct componentname *cnp;
295: };
296:
297: #
298: #% symlink dvp L U U
299: #% symlink vpp - U -
300: #
301: # XXX - note that the return vnode has already been VRELE'ed
302: # by the filesystem layer. To use it you must use vget,
303: # possibly with a further namei.
304: #
305:
306: vop_symlink {
307: IN SHOULDBELOCKED WILLPUT struct vnode *dvp;
308: OUT WILLRELE struct vnode **vpp;
309: IN struct componentname *cnp;
310: IN struct vattr *vap;
311: IN char *target;
312: };
313:
314: #
315: #% readdir vp L L L
316: #
317:
318: vop_readdir {
319: IN SHOULDBELOCKED struct vnode *vp;
320: INOUT struct uio *uio;
321: IN struct ucred *cred;
322: INOUT int *eofflag;
323: OUT int *ncookies;
324: INOUT u_long **cookies;
325: };
326:
327: #
328: #% readlink vp L L L
329: #
330: vop_readlink {
331: IN SHOULDBELOCKED struct vnode *vp;
332: INOUT struct uio *uio;
333: IN struct ucred *cred;
334: };
335:
336: #
337: #% abortop dvp = = =
338: #
339: vop_abortop {
340: IN struct vnode *dvp;
341: IN struct componentname *cnp;
342: };
343:
344:
345: #
346: #% inactive vp L U U
347: #
348: vop_inactive {
349: IN SHOULDBELOCKED WILLUNLOCK struct vnode *vp;
350: IN struct proc *p;
351: };
352:
353: #
354: #% reclaim vp U U U
355: #
356:
357: vop_reclaim {
358: IN struct vnode *vp;
359: IN struct proc *p;
360: };
361:
362: #
363: #% lock vp U L U
364: #
365:
366: vop_lock {
367: IN struct vnode *vp;
368: IN int flags;
369: IN struct proc *p;
370: };
371:
372: #
373: #% unlock vp L U L
374: #
375:
376: vop_unlock {
377: IN struct vnode *vp;
378: IN int flags;
379: IN struct proc *p;
380: };
381:
382: #
383: #% bmap vp L L L
384: #% bmap vpp - U -
385: #
386:
387: vop_bmap {
388: IN SHOULDBELOCKED struct vnode *vp;
389: IN daddr64_t bn;
390: OUT struct vnode **vpp;
391: IN daddr64_t *bnp;
392: OUT int *runp;
393: };
394:
395: #
396: # Needs work: no vp?
397: #
398: #vop_strategy {
399: # IN struct buf *bp;
400: #};
401:
402: #
403: #% print vp = = =
404: #
405: vop_print {
406: IN struct vnode *vp;
407: };
408: #
409: #% pathconf vp L L L
410: #
411: vop_pathconf {
412: IN SHOULDBELOCKED struct vnode *vp;
413: IN int name;
414: OUT register_t *retval;
415: };
416:
417: #
418: #% advlock vp U U U
419: #
420: vop_advlock {
421: IN struct vnode *vp;
422: IN void *id;
423: IN int op;
424: IN struct flock *fl;
425: IN int flags;
426: };
427:
428: #
429: #% reallocblks vp L L L
430: #
431: vop_reallocblks {
432: IN SHOULDBELOCKED struct vnode *vp;
433: IN struct cluster_save *buflist;
434: };
435:
436: # Needs work: no vp?
437: #vop_bwrite {
438: # IN struct buf *bp;
439: #};