Annotation of src/sys/fs/puffs/puffs_sys.h, Revision 1.90
1.90 ! msaitoh 1: /* $NetBSD: puffs_sys.h,v 1.89 2015/02/15 20:21:29 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 */
1.87 apb 66: #define DPRINTF(x) do { \
67: if (puffsdebug > 0) printf x; \
1.88 apb 68: } while (/*CONSTCOND*/0)
1.87 apb 69: #define DPRINTF_VERBOSE(x) do { \
70: if (puffsdebug > 1) printf x; \
1.88 apb 71: } while (/*CONSTCOND*/0)
1.12 pooka 72: #else
1.87 apb 73: #define DPRINTF(x) ((void)0)
74: #define DPRINTF_VERBOSE(x) ((void)0)
1.12 pooka 75: #endif
1.1 pooka 76:
77: #define MPTOPUFFSMP(mp) ((struct puffs_mount *)((mp)->mnt_data))
78: #define PMPTOMP(pmp) (pmp->pmp_mp)
79: #define VPTOPP(vp) ((struct puffs_node *)(vp)->v_data)
80: #define VPTOPNC(vp) (((struct puffs_node *)(vp)->v_data)->pn_cookie)
81: #define VPTOPUFFSMP(vp) ((struct puffs_mount*)((struct puffs_node*)vp->v_data))
82:
1.32 pooka 83: /* we don't pass the kernel overlay to userspace */
84: #define PUFFS_TOFHSIZE(s) ((s)==0 ? (s) : (s)+4)
85: #define PUFFS_FROMFHSIZE(s) ((s)==0 ? (s) : (s)-4)
86:
1.34 pooka 87: #define ALLOPS(pmp) (pmp->pmp_flags & PUFFS_KFLAG_ALLOPS)
1.10 pooka 88: #define EXISTSOP(pmp, op) \
1.34 pooka 89: (ALLOPS(pmp) || ((pmp)->pmp_vnopmask[PUFFS_VN_##op]))
1.10 pooka 90:
1.42 pooka 91: #define PUFFS_USE_NAMECACHE(pmp) \
92: (((pmp)->pmp_flags & PUFFS_KFLAG_NOCACHE_NAME) == 0)
93: #define PUFFS_USE_PAGECACHE(pmp) \
94: (((pmp)->pmp_flags & PUFFS_KFLAG_NOCACHE_PAGE) == 0)
1.45 pooka 95: #define PUFFS_USE_FULLPNBUF(pmp) \
96: ((pmp)->pmp_flags & PUFFS_KFLAG_LOOKUP_FULLPNBUF)
1.79 manu 97: #define PUFFS_USE_FS_TTL(pmp) \
98: ((pmp)->pmp_flags & PUFFS_KFLAG_CACHE_FS_TTL)
1.82 manu 99: #define PUFFS_USE_DOTDOTCACHE(pmp) \
100: ((pmp)->pmp_flags & PUFFS_KFLAG_CACHE_DOTDOT)
1.89 manu 101: #define PUFFS_USE_METAFLUSH(pmp) \
102: (((pmp)->pmp_flags & PUFFS_KFLAG_NOFLUSH_META) == 0)
1.16 pooka 103:
1.84 christos 104: #define PUFFS_WCACHEINFO(pmp) (__USE(pmp), 0)
1.27 pooka 105:
1.50 pooka 106: struct puffs_newcookie {
1.70 pooka 107: puffs_cookie_t pnc_cookie;
1.50 pooka 108:
109: LIST_ENTRY(puffs_newcookie) pnc_entries;
110: };
111:
1.80 manu 112: #define PUFFS_SOPREQ_EXPIRE_TIMEOUT 1000
113: extern int puffs_sopreq_expire_timeout;
114:
1.73 pooka 115: enum puffs_sopreqtype {
1.75 pooka 116: PUFFS_SOPREQSYS_EXIT,
1.73 pooka 117: PUFFS_SOPREQ_FLUSH,
1.74 pooka 118: PUFFS_SOPREQ_UNMOUNT,
1.80 manu 119: PUFFS_SOPREQ_EXPIRE,
1.73 pooka 120: };
121:
122: struct puffs_sopreq {
123: union {
124: struct puffs_req preq;
125: struct puffs_flush pf;
1.80 manu 126: puffs_cookie_t ck;
1.73 pooka 127: } psopr_u;
128:
129: enum puffs_sopreqtype psopr_sopreq;
130: TAILQ_ENTRY(puffs_sopreq) psopr_entries;
1.80 manu 131: int psopr_at;
1.73 pooka 132: };
133: #define psopr_preq psopr_u.preq
134: #define psopr_pf psopr_u.pf
1.80 manu 135: #define psopr_ck psopr_u.ck
1.73 pooka 136:
1.59 pooka 137: TAILQ_HEAD(puffs_wq, puffs_msgpark);
1.20 pooka 138: LIST_HEAD(puffs_node_hashlist, puffs_node);
1.1 pooka 139: struct puffs_mount {
1.28 pooka 140: kmutex_t pmp_lock;
1.1 pooka 141:
1.31 pooka 142: struct puffs_kargs pmp_args;
1.10 pooka 143: #define pmp_flags pmp_args.pa_flags
144: #define pmp_vnopmask pmp_args.pa_vnopmask
1.1 pooka 145:
1.59 pooka 146: struct puffs_wq pmp_msg_touser;
147: int pmp_msg_touser_count;
148: kcondvar_t pmp_msg_waiter_cv;
149: size_t pmp_msg_maxsize;
1.1 pooka 150:
1.59 pooka 151: struct puffs_wq pmp_msg_replywait;
1.1 pooka 152:
153: struct mount *pmp_mp;
1.35 pooka 154:
1.1 pooka 155: struct vnode *pmp_root;
1.70 pooka 156: puffs_cookie_t pmp_root_cookie;
1.35 pooka 157: enum vtype pmp_root_vtype;
158: vsize_t pmp_root_vsize;
159: dev_t pmp_root_rdev;
160:
1.60 pooka 161: struct putter_instance *pmp_pi;
1.1 pooka 162:
1.33 pooka 163: unsigned int pmp_refcount;
164: kcondvar_t pmp_refcount_cv;
1.28 pooka 165:
1.33 pooka 166: kcondvar_t pmp_unmounting_cv;
1.14 pooka 167: uint8_t pmp_unmounting;
1.33 pooka 168:
169: uint8_t pmp_status;
1.22 pooka 170: uint8_t pmp_suspend;
1.28 pooka 171:
1.59 pooka 172: uint8_t *pmp_curput;
173: size_t pmp_curres;
174: void *pmp_curopaq;
175:
176: uint64_t pmp_nextmsgid;
1.73 pooka 177:
178: kmutex_t pmp_sopmtx;
179: kcondvar_t pmp_sopcv;
180: int pmp_sopthrcount;
1.80 manu 181: TAILQ_HEAD(, puffs_sopreq) pmp_sopfastreqs;
1.81 manu 182: TAILQ_HEAD(, puffs_sopreq) pmp_sopnodereqs;
1.76 pooka 183: bool pmp_docompat;
1.1 pooka 184: };
1.8 pooka 185:
1.1 pooka 186: #define PUFFSTAT_BEFOREINIT 0
187: #define PUFFSTAT_MOUNTING 1
188: #define PUFFSTAT_RUNNING 2
1.14 pooka 189: #define PUFFSTAT_DYING 3 /* Do you want your possessions identified? */
1.1 pooka 190:
1.27 pooka 191:
1.80 manu 192: #define PNODE_NOREFS 0x001 /* no backend reference */
193: #define PNODE_DYING 0x002 /* NOREFS + inactive */
194: #define PNODE_FAF 0x004 /* issue all operations as FAF */
195: #define PNODE_DOINACT 0x008 /* if inactive-on-demand, call inactive */
196: #define PNODE_SOPEXP 0x100 /* Node reclaim postponed in sop thread */
1.85 manu 197: #define PNODE_RDIRECT 0x200 /* bypass page cache on read */
198: #define PNODE_WDIRECT 0x400 /* bypass page cache on write */
1.27 pooka 199:
200: #define PNODE_METACACHE_ATIME 0x10 /* cache atime metadata */
201: #define PNODE_METACACHE_CTIME 0x20 /* cache atime metadata */
202: #define PNODE_METACACHE_MTIME 0x40 /* cache atime metadata */
203: #define PNODE_METACACHE_SIZE 0x80 /* cache atime metadata */
204: #define PNODE_METACACHE_MASK 0xf0
205:
1.1 pooka 206: struct puffs_node {
1.6 pooka 207: struct genfs_node pn_gnode; /* genfs glue */
208:
1.36 pooka 209: kmutex_t pn_mtx;
210: int pn_refcount;
1.80 manu 211: int pn_nlookup;
1.36 pooka 212:
1.70 pooka 213: puffs_cookie_t pn_cookie; /* userspace pnode cookie */
1.1 pooka 214: struct vnode *pn_vp; /* backpointer to vnode */
215: uint32_t pn_stat; /* node status */
216:
1.36 pooka 217: struct selinfo pn_sel; /* for selecting on the node */
218: short pn_revents; /* available events */
219:
1.27 pooka 220: /* metacache */
221: struct timespec pn_mc_atime;
222: struct timespec pn_mc_ctime;
223: struct timespec pn_mc_mtime;
224: u_quad_t pn_mc_size;
225:
1.47 pooka 226: voff_t pn_serversize;
227:
1.77 kefren 228: struct lockf * pn_lockf;
229:
1.78 manu 230: kmutex_t pn_sizemtx; /* size modification mutex */
1.79 manu 231:
232: int pn_cn_timeout; /* path cache */
1.80 manu 233: int pn_cn_grace; /* grace time before reclaim */
1.79 manu 234: int pn_va_timeout; /* attribute cache */
235: struct vattr * pn_va_cache; /* attribute cache */
1.82 manu 236: struct vnode * pn_parent; /* parent cache */
1.1 pooka 237: };
238:
1.54 pooka 239: typedef void (*parkdone_fn)(struct puffs_mount *, struct puffs_req *, void *);
1.29 pooka 240:
1.59 pooka 241: struct puffs_msgpark;
1.28 pooka 242: void puffs_msgif_init(void);
243: void puffs_msgif_destroy(void);
1.59 pooka 244: int puffs_msgmem_alloc(size_t, struct puffs_msgpark **, void **, int);
245: void puffs_msgmem_release(struct puffs_msgpark *);
1.62 pooka 246:
1.73 pooka 247: void puffs_sop_thread(void *);
248:
1.59 pooka 249: void puffs_msg_setfaf(struct puffs_msgpark *);
1.62 pooka 250: void puffs_msg_setdelta(struct puffs_msgpark *, size_t);
1.70 pooka 251: void puffs_msg_setinfo(struct puffs_msgpark *, int, int, puffs_cookie_t);
1.62 pooka 252: void puffs_msg_setcall(struct puffs_msgpark *, parkdone_fn, void *);
253:
254: void puffs_msg_enqueue(struct puffs_mount *, struct puffs_msgpark *);
255: int puffs_msg_wait(struct puffs_mount *, struct puffs_msgpark *);
256: int puffs_msg_wait2(struct puffs_mount *, struct puffs_msgpark *,
257: struct puffs_node *, struct puffs_node *);
1.1 pooka 258:
1.66 pooka 259: void puffs_msg_sendresp(struct puffs_mount *, struct puffs_req *, int);
260:
1.70 pooka 261: int puffs_getvnode(struct mount *, puffs_cookie_t, enum vtype,
262: voff_t, dev_t, struct vnode **);
1.1 pooka 263: int puffs_newnode(struct mount *, struct vnode *, struct vnode **,
1.70 pooka 264: puffs_cookie_t, struct componentname *,
265: enum vtype, dev_t);
1.1 pooka 266: void puffs_putvnode(struct vnode *);
1.36 pooka 267:
268: void puffs_releasenode(struct puffs_node *);
269: void puffs_referencenode(struct puffs_node *);
270:
1.52 pooka 271: #define PUFFS_NOSUCHCOOKIE (-1)
1.86 hannken 272: int puffs_cookie2vnode(struct puffs_mount *, puffs_cookie_t,
1.50 pooka 273: struct vnode **);
1.43 pooka 274: void puffs_makecn(struct puffs_kcn *, struct puffs_kcred *,
1.67 pooka 275: const struct componentname *, int);
1.43 pooka 276: void puffs_credcvt(struct puffs_kcred *, kauth_cred_t);
1.1 pooka 277:
1.54 pooka 278: void puffs_parkdone_asyncbioread(struct puffs_mount *,
279: struct puffs_req *, void *);
1.63 pooka 280: void puffs_parkdone_asyncbiowrite(struct puffs_mount *,
281: struct puffs_req *, void *);
1.54 pooka 282: void puffs_parkdone_poll(struct puffs_mount *, struct puffs_req *, void *);
1.29 pooka 283:
1.33 pooka 284: void puffs_mp_reference(struct puffs_mount *);
285: void puffs_mp_release(struct puffs_mount *);
286:
1.90 ! msaitoh 287: void puffs_gop_size(struct vnode *, off_t, off_t *, int);
1.53 pooka 288: void puffs_gop_markupdate(struct vnode *, int);
289:
1.70 pooka 290: void puffs_senderr(struct puffs_mount *, int, int, const char *,
291: puffs_cookie_t);
1.62 pooka 292:
1.76 pooka 293: bool puffs_compat_outgoing(struct puffs_req *, struct puffs_req**, ssize_t*);
294: void puffs_compat_incoming(struct puffs_req *, struct puffs_req *);
295:
1.64 pooka 296: void puffs_updatenode(struct puffs_node *, int, voff_t);
1.6 pooka 297: #define PUFFS_UPDATEATIME 0x01
298: #define PUFFS_UPDATECTIME 0x02
299: #define PUFFS_UPDATEMTIME 0x04
300: #define PUFFS_UPDATESIZE 0x08
301:
1.60 pooka 302: void puffs_userdead(struct puffs_mount *);
1.13 pooka 303:
1.1 pooka 304: extern int (**puffs_vnodeop_p)(void *);
305:
1.62 pooka 306: /* for putter */
1.59 pooka 307: int puffs_msgif_getout(void *, size_t, int, uint8_t **, size_t *, void **);
308: void puffs_msgif_releaseout(void *, void *, int);
1.61 pooka 309: int puffs_msgif_dispatch(void *, struct putter_hdr *);
1.60 pooka 310: size_t puffs_msgif_waitcount(void *);
311: int puffs_msgif_close(void *);
1.59 pooka 312:
1.54 pooka 313: static __inline int
314: checkerr(struct puffs_mount *pmp, int error, const char *str)
315: {
316:
317: if (error < 0 || error > ELAST) {
1.62 pooka 318: puffs_senderr(pmp, PUFFS_ERR_ERROR, error, str, NULL);
1.54 pooka 319: error = EPROTO;
320: }
321:
322: return error;
323: }
324:
1.59 pooka 325: #define PUFFS_MSG_VARS(type, a) \
326: struct puffs_##type##msg_##a *a##_msg; \
327: struct puffs_msgpark *park_##a = NULL
328:
329: #define PUFFS_MSG_ALLOC(type, a) \
330: puffs_msgmem_alloc(sizeof(struct puffs_##type##msg_##a), \
1.69 pooka 331: &park_##a, (void *)& a##_msg, 1)
1.59 pooka 332:
333: #define PUFFS_MSG_RELEASE(a) \
334: do { \
335: if (park_##a) puffs_msgmem_release(park_##a); \
336: } while (/*CONSTCOND*/0)
337:
1.84 christos 338: #define PUFFS_MSG_ENQUEUEWAIT_NOERROR(pmp, park) \
339: do { \
340: puffs_msg_enqueue(pmp, park); \
341: puffs_msg_wait(pmp, park); \
342: } while (/*CONSTCOND*/0)
343:
344: #define PUFFS_MSG_ENQUEUEWAIT2_NOERROR(pmp, park, vp1, vp2) \
345: do { \
346: puffs_msg_enqueue(pmp, park); \
347: puffs_msg_wait2(pmp, park, vp1, vp2); \
348: } while (/*CONSTCOND*/0)
349:
1.62 pooka 350: #define PUFFS_MSG_ENQUEUEWAIT(pmp, park, var) \
351: do { \
352: puffs_msg_enqueue(pmp, park); \
353: var = puffs_msg_wait(pmp, park); \
354: } while (/*CONSTCOND*/0)
355:
356: #define PUFFS_MSG_ENQUEUEWAIT2(pmp, park, vp1, vp2, var) \
357: do { \
358: puffs_msg_enqueue(pmp, park); \
359: var = puffs_msg_wait2(pmp, park, vp1, vp2); \
360: } while (/*CONSTCOND*/0)
361:
1.1 pooka 362: #endif /* _PUFFS_SYS_H_ */
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