Annotation of src/sys/fs/puffs/puffs_sys.h, Revision 1.79
1.79 ! manu 1: /* $NetBSD: puffs_sys.h,v 1.78 2011/08/29 04:12:45 manu Exp $ */
1.1 pooka 2:
3: /*
4: * Copyright (c) 2005, 2006 Antti Kantee. All Rights Reserved.
5: *
6: * Development of this software was supported by the
7: * Google Summer of Code program and the Ulla Tuominen Foundation.
8: * The Google SoC project was mentored by Bill Studenmund.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
20: * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
21: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
22: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR 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 OR
25: * 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:
32: #ifndef _PUFFS_SYS_H_
33: #define _PUFFS_SYS_H_
34:
35: #include <sys/param.h>
36: #include <sys/select.h>
37: #include <sys/kauth.h>
1.28 pooka 38: #include <sys/mutex.h>
1.1 pooka 39: #include <sys/queue.h>
1.4 pooka 40: #include <sys/pool.h>
1.1 pooka 41:
42: #include <fs/puffs/puffs_msgif.h>
43:
1.6 pooka 44: #include <miscfs/genfs/genfs_node.h>
45:
1.2 pooka 46: extern int (**puffs_vnodeop_p)(void *);
47: extern int (**puffs_specop_p)(void *);
1.3 pooka 48: extern int (**puffs_fifoop_p)(void *);
1.2 pooka 49:
50: extern const struct vnodeopv_desc puffs_vnodeop_opv_desc;
51: extern const struct vnodeopv_desc puffs_specop_opv_desc;
1.3 pooka 52: extern const struct vnodeopv_desc puffs_fifoop_opv_desc;
1.10 pooka 53: extern const struct vnodeopv_desc puffs_msgop_opv_desc;
1.2 pooka 54:
1.4 pooka 55: extern struct pool puffs_pnpool;
1.79 ! manu 56: extern struct pool puffs_vapool;
1.4 pooka 57:
1.12 pooka 58: #ifdef DEBUG
1.24 pooka 59: #ifndef PUFFSDEBUG
60: #define PUFFSDEBUG
61: #endif
62: #endif
63:
64: #ifdef PUFFSDEBUG
1.12 pooka 65: extern int puffsdebug; /* puffs_subr.c */
66: #define DPRINTF(x) if (puffsdebug > 0) printf x
67: #define DPRINTF_VERBOSE(x) if (puffsdebug > 1) printf x
68: #else
1.1 pooka 69: #define DPRINTF(x)
1.10 pooka 70: #define DPRINTF_VERBOSE(x)
1.12 pooka 71: #endif
1.1 pooka 72:
73: #define MPTOPUFFSMP(mp) ((struct puffs_mount *)((mp)->mnt_data))
74: #define PMPTOMP(pmp) (pmp->pmp_mp)
75: #define VPTOPP(vp) ((struct puffs_node *)(vp)->v_data)
76: #define VPTOPNC(vp) (((struct puffs_node *)(vp)->v_data)->pn_cookie)
77: #define VPTOPUFFSMP(vp) ((struct puffs_mount*)((struct puffs_node*)vp->v_data))
78:
1.32 pooka 79: /* we don't pass the kernel overlay to userspace */
80: #define PUFFS_TOFHSIZE(s) ((s)==0 ? (s) : (s)+4)
81: #define PUFFS_FROMFHSIZE(s) ((s)==0 ? (s) : (s)-4)
82:
1.34 pooka 83: #define ALLOPS(pmp) (pmp->pmp_flags & PUFFS_KFLAG_ALLOPS)
1.10 pooka 84: #define EXISTSOP(pmp, op) \
1.34 pooka 85: (ALLOPS(pmp) || ((pmp)->pmp_vnopmask[PUFFS_VN_##op]))
1.10 pooka 86:
1.42 pooka 87: #define PUFFS_USE_NAMECACHE(pmp) \
88: (((pmp)->pmp_flags & PUFFS_KFLAG_NOCACHE_NAME) == 0)
89: #define PUFFS_USE_PAGECACHE(pmp) \
90: (((pmp)->pmp_flags & PUFFS_KFLAG_NOCACHE_PAGE) == 0)
1.45 pooka 91: #define PUFFS_USE_FULLPNBUF(pmp) \
92: ((pmp)->pmp_flags & PUFFS_KFLAG_LOOKUP_FULLPNBUF)
1.79 ! manu 93: #define PUFFS_USE_FS_TTL(pmp) \
! 94: ((pmp)->pmp_flags & PUFFS_KFLAG_CACHE_FS_TTL)
1.16 pooka 95:
1.27 pooka 96: #define PUFFS_WCACHEINFO(pmp) 0
97:
1.50 pooka 98: struct puffs_newcookie {
1.70 pooka 99: puffs_cookie_t pnc_cookie;
1.50 pooka 100:
101: LIST_ENTRY(puffs_newcookie) pnc_entries;
102: };
103:
1.73 pooka 104: enum puffs_sopreqtype {
1.75 pooka 105: PUFFS_SOPREQSYS_EXIT,
1.73 pooka 106: PUFFS_SOPREQ_FLUSH,
1.74 pooka 107: PUFFS_SOPREQ_UNMOUNT,
1.73 pooka 108: };
109:
110: struct puffs_sopreq {
111: union {
112: struct puffs_req preq;
113: struct puffs_flush pf;
114: } psopr_u;
115:
116: enum puffs_sopreqtype psopr_sopreq;
117: TAILQ_ENTRY(puffs_sopreq) psopr_entries;
118: };
119: #define psopr_preq psopr_u.preq
120: #define psopr_pf psopr_u.pf
121:
1.59 pooka 122: TAILQ_HEAD(puffs_wq, puffs_msgpark);
1.20 pooka 123: LIST_HEAD(puffs_node_hashlist, puffs_node);
1.1 pooka 124: struct puffs_mount {
1.28 pooka 125: kmutex_t pmp_lock;
1.1 pooka 126:
1.31 pooka 127: struct puffs_kargs pmp_args;
1.10 pooka 128: #define pmp_flags pmp_args.pa_flags
129: #define pmp_vnopmask pmp_args.pa_vnopmask
1.1 pooka 130:
1.59 pooka 131: struct puffs_wq pmp_msg_touser;
132: int pmp_msg_touser_count;
133: kcondvar_t pmp_msg_waiter_cv;
134: size_t pmp_msg_maxsize;
1.1 pooka 135:
1.59 pooka 136: struct puffs_wq pmp_msg_replywait;
1.1 pooka 137:
1.20 pooka 138: struct puffs_node_hashlist *pmp_pnodehash;
1.32 pooka 139: int pmp_npnodehash;
1.1 pooka 140:
1.50 pooka 141: LIST_HEAD(, puffs_newcookie) pmp_newcookie;
142:
1.1 pooka 143: struct mount *pmp_mp;
1.35 pooka 144:
1.1 pooka 145: struct vnode *pmp_root;
1.70 pooka 146: puffs_cookie_t pmp_root_cookie;
1.35 pooka 147: enum vtype pmp_root_vtype;
148: vsize_t pmp_root_vsize;
149: dev_t pmp_root_rdev;
150:
1.60 pooka 151: struct putter_instance *pmp_pi;
1.1 pooka 152:
1.33 pooka 153: unsigned int pmp_refcount;
154: kcondvar_t pmp_refcount_cv;
1.28 pooka 155:
1.33 pooka 156: kcondvar_t pmp_unmounting_cv;
1.14 pooka 157: uint8_t pmp_unmounting;
1.33 pooka 158:
159: uint8_t pmp_status;
1.22 pooka 160: uint8_t pmp_suspend;
1.28 pooka 161:
1.59 pooka 162: uint8_t *pmp_curput;
163: size_t pmp_curres;
164: void *pmp_curopaq;
165:
166: uint64_t pmp_nextmsgid;
1.73 pooka 167:
168: kmutex_t pmp_sopmtx;
169: kcondvar_t pmp_sopcv;
170: int pmp_sopthrcount;
171: TAILQ_HEAD(, puffs_sopreq) pmp_sopreqs;
1.76 pooka 172: bool pmp_docompat;
1.1 pooka 173: };
1.8 pooka 174:
1.1 pooka 175: #define PUFFSTAT_BEFOREINIT 0
176: #define PUFFSTAT_MOUNTING 1
177: #define PUFFSTAT_RUNNING 2
1.14 pooka 178: #define PUFFSTAT_DYING 3 /* Do you want your possessions identified? */
1.1 pooka 179:
1.27 pooka 180:
1.37 pooka 181: #define PNODE_NOREFS 0x01 /* no backend reference */
1.71 pooka 182: #define PNODE_DYING 0x02 /* NOREFS + inactive */
1.72 pooka 183: #define PNODE_FAF 0x04 /* issue all operations as FAF */
1.38 pooka 184: #define PNODE_DOINACT 0x08 /* if inactive-on-demand, call inactive */
1.27 pooka 185:
186: #define PNODE_METACACHE_ATIME 0x10 /* cache atime metadata */
187: #define PNODE_METACACHE_CTIME 0x20 /* cache atime metadata */
188: #define PNODE_METACACHE_MTIME 0x40 /* cache atime metadata */
189: #define PNODE_METACACHE_SIZE 0x80 /* cache atime metadata */
190: #define PNODE_METACACHE_MASK 0xf0
191:
1.1 pooka 192: struct puffs_node {
1.6 pooka 193: struct genfs_node pn_gnode; /* genfs glue */
194:
1.36 pooka 195: kmutex_t pn_mtx;
196: int pn_refcount;
197:
1.70 pooka 198: puffs_cookie_t pn_cookie; /* userspace pnode cookie */
1.1 pooka 199: struct vnode *pn_vp; /* backpointer to vnode */
200: uint32_t pn_stat; /* node status */
201:
1.36 pooka 202: struct selinfo pn_sel; /* for selecting on the node */
203: short pn_revents; /* available events */
204:
1.27 pooka 205: /* metacache */
206: struct timespec pn_mc_atime;
207: struct timespec pn_mc_ctime;
208: struct timespec pn_mc_mtime;
209: u_quad_t pn_mc_size;
210:
1.47 pooka 211: voff_t pn_serversize;
212:
1.77 kefren 213: struct lockf * pn_lockf;
214:
1.78 manu 215: kmutex_t pn_sizemtx; /* size modification mutex */
1.79 ! manu 216:
! 217: int pn_cn_timeout; /* path cache */
! 218: int pn_va_timeout; /* attribute cache */
! 219: struct vattr * pn_va_cache; /* attribute cache */
1.78 manu 220:
1.20 pooka 221: LIST_ENTRY(puffs_node) pn_hashent;
1.1 pooka 222: };
223:
1.54 pooka 224: typedef void (*parkdone_fn)(struct puffs_mount *, struct puffs_req *, void *);
1.29 pooka 225:
1.59 pooka 226: struct puffs_msgpark;
1.28 pooka 227: void puffs_msgif_init(void);
228: void puffs_msgif_destroy(void);
1.59 pooka 229: int puffs_msgmem_alloc(size_t, struct puffs_msgpark **, void **, int);
230: void puffs_msgmem_release(struct puffs_msgpark *);
1.62 pooka 231:
1.73 pooka 232: void puffs_sop_thread(void *);
233:
1.59 pooka 234: void puffs_msg_setfaf(struct puffs_msgpark *);
1.62 pooka 235: void puffs_msg_setdelta(struct puffs_msgpark *, size_t);
1.70 pooka 236: void puffs_msg_setinfo(struct puffs_msgpark *, int, int, puffs_cookie_t);
1.62 pooka 237: void puffs_msg_setcall(struct puffs_msgpark *, parkdone_fn, void *);
238:
239: void puffs_msg_enqueue(struct puffs_mount *, struct puffs_msgpark *);
240: int puffs_msg_wait(struct puffs_mount *, struct puffs_msgpark *);
241: int puffs_msg_wait2(struct puffs_mount *, struct puffs_msgpark *,
242: struct puffs_node *, struct puffs_node *);
1.1 pooka 243:
1.66 pooka 244: void puffs_msg_sendresp(struct puffs_mount *, struct puffs_req *, int);
245:
1.70 pooka 246: int puffs_getvnode(struct mount *, puffs_cookie_t, enum vtype,
247: voff_t, dev_t, struct vnode **);
1.1 pooka 248: int puffs_newnode(struct mount *, struct vnode *, struct vnode **,
1.70 pooka 249: puffs_cookie_t, struct componentname *,
250: enum vtype, dev_t);
1.1 pooka 251: void puffs_putvnode(struct vnode *);
1.36 pooka 252:
253: void puffs_releasenode(struct puffs_node *);
254: void puffs_referencenode(struct puffs_node *);
255:
1.52 pooka 256: #define PUFFS_NOSUCHCOOKIE (-1)
1.70 pooka 257: int puffs_cookie2vnode(struct puffs_mount *, puffs_cookie_t, int, int,
1.50 pooka 258: struct vnode **);
1.43 pooka 259: void puffs_makecn(struct puffs_kcn *, struct puffs_kcred *,
1.67 pooka 260: const struct componentname *, int);
1.43 pooka 261: void puffs_credcvt(struct puffs_kcred *, kauth_cred_t);
1.1 pooka 262:
1.54 pooka 263: void puffs_parkdone_asyncbioread(struct puffs_mount *,
264: struct puffs_req *, void *);
1.63 pooka 265: void puffs_parkdone_asyncbiowrite(struct puffs_mount *,
266: struct puffs_req *, void *);
1.54 pooka 267: void puffs_parkdone_poll(struct puffs_mount *, struct puffs_req *, void *);
1.29 pooka 268:
1.33 pooka 269: void puffs_mp_reference(struct puffs_mount *);
270: void puffs_mp_release(struct puffs_mount *);
271:
1.53 pooka 272: void puffs_gop_size(struct vnode *, off_t, off_t *, int);
273: void puffs_gop_markupdate(struct vnode *, int);
274:
1.70 pooka 275: void puffs_senderr(struct puffs_mount *, int, int, const char *,
276: puffs_cookie_t);
1.62 pooka 277:
1.76 pooka 278: bool puffs_compat_outgoing(struct puffs_req *, struct puffs_req**, ssize_t*);
279: void puffs_compat_incoming(struct puffs_req *, struct puffs_req *);
280:
1.64 pooka 281: void puffs_updatenode(struct puffs_node *, int, voff_t);
1.6 pooka 282: #define PUFFS_UPDATEATIME 0x01
283: #define PUFFS_UPDATECTIME 0x02
284: #define PUFFS_UPDATEMTIME 0x04
285: #define PUFFS_UPDATESIZE 0x08
286:
1.60 pooka 287: void puffs_userdead(struct puffs_mount *);
1.13 pooka 288:
1.1 pooka 289: extern int (**puffs_vnodeop_p)(void *);
290:
1.62 pooka 291: /* for putter */
1.59 pooka 292: int puffs_msgif_getout(void *, size_t, int, uint8_t **, size_t *, void **);
293: void puffs_msgif_releaseout(void *, void *, int);
1.61 pooka 294: int puffs_msgif_dispatch(void *, struct putter_hdr *);
1.60 pooka 295: size_t puffs_msgif_waitcount(void *);
296: int puffs_msgif_close(void *);
1.59 pooka 297:
1.54 pooka 298: static __inline int
299: checkerr(struct puffs_mount *pmp, int error, const char *str)
300: {
301:
302: if (error < 0 || error > ELAST) {
1.62 pooka 303: puffs_senderr(pmp, PUFFS_ERR_ERROR, error, str, NULL);
1.54 pooka 304: error = EPROTO;
305: }
306:
307: return error;
308: }
309:
1.59 pooka 310: #define PUFFS_MSG_VARS(type, a) \
311: struct puffs_##type##msg_##a *a##_msg; \
312: struct puffs_msgpark *park_##a = NULL
313:
314: #define PUFFS_MSG_ALLOC(type, a) \
315: puffs_msgmem_alloc(sizeof(struct puffs_##type##msg_##a), \
1.69 pooka 316: &park_##a, (void *)& a##_msg, 1)
1.59 pooka 317:
318: #define PUFFS_MSG_RELEASE(a) \
319: do { \
320: if (park_##a) puffs_msgmem_release(park_##a); \
321: } while (/*CONSTCOND*/0)
322:
1.62 pooka 323: #define PUFFS_MSG_ENQUEUEWAIT(pmp, park, var) \
324: do { \
325: puffs_msg_enqueue(pmp, park); \
326: var = puffs_msg_wait(pmp, park); \
327: } while (/*CONSTCOND*/0)
328:
329: #define PUFFS_MSG_ENQUEUEWAIT2(pmp, park, vp1, vp2, var) \
330: do { \
331: puffs_msg_enqueue(pmp, park); \
332: var = puffs_msg_wait2(pmp, park, vp1, vp2); \
333: } while (/*CONSTCOND*/0)
334:
1.1 pooka 335: #endif /* _PUFFS_SYS_H_ */
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