puffs_priv.h revision 1.33
1 /* $NetBSD: puffs_priv.h,v 1.33 2007/12/04 21:24:12 pooka Exp $ */ 2 3 /* 4 * Copyright (c) 2006 Antti Kantee. All Rights Reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #ifndef _PUFFS_PRIVATE_H_ 29 #define _PUFFS_PRIVATE_H_ 30 31 #include <sys/types.h> 32 #include <fs/puffs/puffs_msgif.h> 33 34 #include <puffs.h> 35 #include <ucontext.h> 36 37 #ifdef PUFFS_WITH_THREADS 38 #include <pthread.h> 39 40 extern pthread_mutex_t pu_lock; 41 #define PU_LOCK() pthread_mutex_lock(&pu_lock) 42 #define PU_UNLOCK() pthread_mutex_unlock(&pu_lock) 43 #else 44 #define PU_LOCK() 45 #define PU_UNLOCK() 46 #endif 47 48 #define PU_CMAP(pu, c) (pu->pu_cmap ? pu->pu_cmap(c) : (struct puffs_node *)c) 49 50 struct puffs_framectrl { 51 puffs_framev_readframe_fn rfb; 52 puffs_framev_writeframe_fn wfb; 53 puffs_framev_cmpframe_fn cmpfb; 54 puffs_framev_gotframe_fn gotfb; 55 puffs_framev_fdnotify_fn fdnotfn; 56 }; 57 58 struct puffs_fctrl_io { 59 struct puffs_framectrl *fctrl; 60 61 int io_fd; 62 int stat; 63 64 int rwait; 65 int wwait; 66 67 struct puffs_framebuf *cur_in; 68 69 TAILQ_HEAD(, puffs_framebuf) snd_qing; /* queueing to be sent */ 70 TAILQ_HEAD(, puffs_framebuf) res_qing; /* q'ing for rescue */ 71 LIST_HEAD(, puffs_fbevent) ev_qing; /* q'ing for events */ 72 73 LIST_ENTRY(puffs_fctrl_io) fio_entries; 74 }; 75 #define FIO_WR 0x01 76 #define FIO_WRGONE 0x02 77 #define FIO_RDGONE 0x04 78 #define FIO_DEAD 0x08 79 #define FIO_ENABLE_R 0x10 80 #define FIO_ENABLE_W 0x20 81 82 #define FIO_EN_WRITE(fio) \ 83 (!(fio->stat & FIO_WR) \ 84 && ((!TAILQ_EMPTY(&fio->snd_qing) \ 85 && (fio->stat & FIO_ENABLE_W)) \ 86 || fio->wwait)) 87 88 #define FIO_RM_WRITE(fio) \ 89 ((fio->stat & FIO_WR) \ 90 && (((TAILQ_EMPTY(&fio->snd_qing) \ 91 || (fio->stat & FIO_ENABLE_W) == 0)) \ 92 && (fio->wwait == 0))) 93 94 struct puffs_executor { 95 struct puffs_framebuf *pex_pufbuf; 96 TAILQ_ENTRY(puffs_executor) pex_entries; 97 }; 98 99 /* 100 * usermount: describes one file system instance 101 */ 102 struct puffs_usermount { 103 struct puffs_ops pu_ops; 104 105 int pu_fd; 106 size_t pu_maxreqlen; 107 108 uint32_t pu_flags; 109 int pu_cc_stackshift; 110 111 int pu_kq; 112 int pu_state; 113 #define PU_STATEMASK 0xff 114 #define PU_INLOOP 0x100 115 #define PU_ASYNCFD 0x200 116 #define PU_HASKQ 0x400 117 #define PU_PUFFSDAEMON 0x800 118 #define PU_SETSTATE(pu, s) (pu->pu_state = (s) | (pu->pu_state & ~PU_STATEMASK)) 119 int pu_dpipe[2]; 120 121 struct puffs_node *pu_pn_root; 122 123 LIST_HEAD(, puffs_node) pu_pnodelst; 124 LIST_HEAD(, puffs_cc) pu_ccnukelst; 125 TAILQ_HEAD(, puffs_cc) pu_sched; 126 127 TAILQ_HEAD(, puffs_executor) pu_exq; 128 129 struct puffs_node *(*pu_cmap)(void *); 130 131 pu_pathbuild_fn pu_pathbuild; 132 pu_pathtransform_fn pu_pathtransform; 133 pu_pathcmp_fn pu_pathcmp; 134 pu_pathfree_fn pu_pathfree; 135 pu_namemod_fn pu_namemod; 136 137 pu_errnotify_fn pu_errnotify; 138 139 pu_prepost_fn pu_oppre; 140 pu_prepost_fn pu_oppost; 141 142 struct puffs_framectrl pu_framectrl[2]; 143 #define PU_FRAMECTRL_FS 0 144 #define PU_FRAMECTRL_USER 1 145 LIST_HEAD(, puffs_fctrl_io) pu_ios; 146 LIST_HEAD(, puffs_fctrl_io) pu_ios_rmlist; 147 struct kevent *pu_evs; 148 size_t pu_nfds; 149 150 puffs_ml_loop_fn pu_ml_lfn; 151 struct timespec pu_ml_timeout; 152 struct timespec *pu_ml_timep; 153 154 struct puffs_kargs *pu_kargp; 155 156 void *pu_privdata; 157 }; 158 159 /* call context */ 160 161 struct puffs_cc { 162 struct puffs_usermount *pcc_pu; 163 struct puffs_framebuf *pcc_pb; 164 165 ucontext_t pcc_uc; /* "continue" */ 166 ucontext_t pcc_uc_ret; /* "yield" */ 167 void *pcc_stack; 168 169 pid_t pcc_pid; 170 lwpid_t pcc_lid; 171 172 int pcc_flags; 173 174 TAILQ_ENTRY(puffs_cc) entries; 175 LIST_ENTRY(puffs_cc) nlst_entries; 176 }; 177 #define PCC_FAKECC 0x01 178 #define PCC_REALCC 0x02 179 #define PCC_DONE 0x04 180 #define PCC_BORROWED 0x08 181 #define PCC_HASCALLER 0x10 182 #define PCC_THREADED 0x20 183 184 #define pcc_callstat(a) (a->pcc_flags & PCC_CALL_MASK) 185 #define pcc_callset(a, b) (a->pcc_flags = (a->pcc_flags & ~PCC_CALL_MASK) | b) 186 187 #define pcc_init_unreal(ap, type) \ 188 do { \ 189 memset(ap, 0, sizeof(*ap)); \ 190 (ap)->pcc_flags = type; \ 191 } while (/*CONSTCOND*/0) 192 193 struct puffs_newinfo { 194 void **pni_cookie; 195 enum vtype *pni_vtype; 196 voff_t *pni_size; 197 dev_t *pni_rdev; 198 }; 199 200 #define PUFFS_MAKEKCRED(to, from) \ 201 /*LINTED: tnilxnaht, the cast is ok */ \ 202 const struct puffs_kcred *to = (const void *)from 203 #define PUFFS_MAKECRED(to, from) \ 204 /*LINTED: tnilxnaht, the cast is ok */ \ 205 const struct puffs_cred *to = (const void *)from 206 #define PUFFS_KCREDTOCRED(to, from) \ 207 /*LINTED: tnilxnaht, the cast is ok */ \ 208 to = (void *)from 209 210 #define PUFFS_MAKEKCID(to, from) \ 211 /*LINTED: tnilxnaht, the cast is ok */ \ 212 const struct puffs_kcid *to = (const void *)from 213 #define PUFFS_MAKECID(to, from) \ 214 /*LINTED: tnilxnaht, the cast is ok */ \ 215 const struct puffs_cid *to = (const void *)from 216 #define PUFFS_KCIDTOCID(to, from) \ 217 /*LINTED: tnilxnaht, the cast is ok */ \ 218 to = (void *)from 219 220 __BEGIN_DECLS 221 222 void puffs_calldispatcher(struct puffs_cc *); 223 224 void puffs_framev_input(struct puffs_usermount *, struct puffs_framectrl *, 225 struct puffs_fctrl_io *); 226 int puffs_framev_output(struct puffs_usermount *, struct puffs_framectrl*, 227 struct puffs_fctrl_io *); 228 void puffs_framev_exit(struct puffs_usermount *); 229 void puffs_framev_readclose(struct puffs_usermount *, 230 struct puffs_fctrl_io *, int); 231 void puffs_framev_writeclose(struct puffs_usermount *, 232 struct puffs_fctrl_io *, int); 233 void puffs_framev_notify(struct puffs_fctrl_io *, int); 234 void *puffs__framebuf_getdataptr(struct puffs_framebuf *); 235 int puffs__framev_addfd_ctrl(struct puffs_usermount *, int, int, 236 struct puffs_framectrl *); 237 void puffs__framebuf_moveinfo(struct puffs_framebuf *, 238 struct puffs_framebuf *); 239 240 int puffs_cc_create(struct puffs_usermount *, struct puffs_framebuf *, 241 int, struct puffs_cc **); 242 void puffs_cc_destroy(struct puffs_cc *); 243 void puffs_cc_setcaller(struct puffs_cc *, pid_t, lwpid_t); 244 void puffs_goto(struct puffs_cc *); 245 246 int puffs_fsframe_read(struct puffs_usermount *, struct puffs_framebuf *, 247 int, int *); 248 int puffs_fsframe_write(struct puffs_usermount *, struct puffs_framebuf *, 249 int, int *); 250 int puffs_fsframe_cmp(struct puffs_usermount *, struct puffs_framebuf *, 251 struct puffs_framebuf *, int *); 252 void puffs_fsframe_gotframe(struct puffs_usermount *, 253 struct puffs_framebuf *); 254 255 int puffs_dopufbuf(struct puffs_usermount *, struct puffs_framebuf *); 256 void *puffs_docc(void *); 257 258 __END_DECLS 259 260 #endif /* _PUFFS_PRIVATE_H_ */ 261
Indexes created Mon Oct 27 08:10:08 GMT 2025