puffs_priv.h revision 1.21
1 /* $NetBSD: puffs_priv.h,v 1.21 2007/09/01 16:42:42 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 #define PU_CMAP(pu, c) (pu->pu_cmap ? pu->pu_cmap(c) : (struct puffs_node *)c) 38 39 struct puffs_framectrl { 40 puffs_framev_readframe_fn rfb; 41 puffs_framev_writeframe_fn wfb; 42 puffs_framev_cmpframe_fn cmpfb; 43 puffs_framev_gotframe_fn gotfb; 44 puffs_framev_fdnotify_fn fdnotfn; 45 46 struct kevent *evs; 47 size_t nfds; 48 49 struct timespec timeout; 50 struct timespec *timp; 51 52 LIST_HEAD(, puffs_fctrl_io) fb_ios; 53 LIST_HEAD(, puffs_fctrl_io) fb_ios_rmlist; 54 }; 55 56 struct puffs_fctrl_io { 57 int io_fd; 58 int stat; 59 60 int rwait; 61 int wwait; 62 63 struct puffs_framebuf *cur_in; 64 65 TAILQ_HEAD(, puffs_framebuf) snd_qing; /* queueing to be sent */ 66 TAILQ_HEAD(, puffs_framebuf) res_qing; /* q'ing for rescue */ 67 LIST_HEAD(, puffs_fbevent) ev_qing; /* q'ing for events */ 68 69 LIST_ENTRY(puffs_fctrl_io) fio_entries; 70 }; 71 #define FIO_WR 0x01 72 #define FIO_WRGONE 0x02 73 #define FIO_RDGONE 0x04 74 #define FIO_DEAD 0x08 75 #define FIO_ENABLE_R 0x10 76 #define FIO_ENABLE_W 0x20 77 78 #define FIO_EN_WRITE(fio) \ 79 (!(fio->stat & FIO_WR) \ 80 && ((!TAILQ_EMPTY(&fio->snd_qing) \ 81 && (fio->stat & FIO_ENABLE_W)) \ 82 || fio->wwait)) 83 84 #define FIO_RM_WRITE(fio) \ 85 ((fio->stat & FIO_WR) \ 86 && (((TAILQ_EMPTY(&fio->snd_qing) \ 87 || (fio->stat & FIO_ENABLE_W) == 0)) \ 88 && (fio->wwait == 0))) 89 90 /* 91 * usermount: describes one file system instance 92 */ 93 struct puffs_usermount { 94 struct puffs_ops pu_ops; 95 96 int pu_fd; 97 size_t pu_maxreqlen; 98 99 uint32_t pu_flags; 100 size_t pu_cc_stacksize; 101 102 int pu_kq; 103 int pu_haskq; 104 int pu_state; 105 #define PU_STATEMASK 0xff 106 #define PU_INLOOP 0x100 107 #define PU_ASYNCFD 0x200 108 #define PU_SETSTATE(pu, s) (pu->pu_state = (s) | (pu->pu_state & ~PU_STATEMASK)) 109 110 struct puffs_node *pu_pn_root; 111 112 LIST_HEAD(, puffs_node) pu_pnodelst; 113 LIST_HEAD(, puffs_cc) pu_ccnukelst; 114 115 struct puffs_node *(*pu_cmap)(void *); 116 117 pu_pathbuild_fn pu_pathbuild; 118 pu_pathtransform_fn pu_pathtransform; 119 pu_pathcmp_fn pu_pathcmp; 120 pu_pathfree_fn pu_pathfree; 121 pu_namemod_fn pu_namemod; 122 123 struct puffs_framectrl pu_framectrl; 124 125 puffs_ml_loop_fn pu_ml_lfn; 126 struct timespec pu_ml_timeout; 127 struct timespec *pu_ml_timep; 128 129 struct puffs_kargs *pu_kargp; 130 131 void *pu_privdata; 132 }; 133 134 /* call context */ 135 136 struct puffs_cc { 137 struct puffs_usermount *pcc_pu; 138 struct puffs_req *pcc_preq; 139 140 ucontext_t pcc_uc; /* "continue" */ 141 ucontext_t pcc_uc_ret; /* "yield" */ 142 void *pcc_stack; 143 144 int pcc_flags; 145 struct puffs_putreq *pcc_ppr; 146 147 TAILQ_ENTRY(puffs_cc) entries; 148 LIST_ENTRY(puffs_cc) nlst_entries; 149 }; 150 #define PCC_FAKECC 0x01 151 #define PCC_REALCC 0x02 152 #define PCC_DONE 0x04 153 #define PCC_BORROWED 0x08 154 155 #define pcc_callstat(a) (a->pcc_flags & PCC_CALL_MASK) 156 #define pcc_callset(a, b) (a->pcc_flags = (a->pcc_flags & ~PCC_CALL_MASK) | b) 157 158 #define pcc_init_local(ap) \ 159 do { \ 160 memset(ap, 0, sizeof(*ap)); \ 161 (ap)->pcc_flags = PCC_FAKECC; \ 162 } while (/*CONSTCOND*/0) 163 164 /* 165 * Reqs 166 */ 167 168 struct puffs_getreq { 169 struct puffs_usermount *pgr_pu; 170 171 struct puffs_reqh_get pgr_phg; 172 struct puffs_reqh_get pgr_phg_orig; 173 174 struct puffs_req *pgr_nextpreq; 175 size_t pgr_advance; 176 177 /* diagnostics */ 178 int pgr_nppr; 179 }; 180 181 struct puffs_putreq { 182 struct puffs_usermount *ppr_pu; 183 184 struct puffs_reqh_put ppr_php; 185 186 /* to adjust next request info */ 187 void **ppr_buf; 188 size_t *ppr_buflen; 189 uint64_t *ppr_id; 190 191 /* for delayed action freeing of preq's */ 192 TAILQ_HEAD(, puffs_cc) ppr_pccq; 193 194 /* diagnostics */ 195 struct puffs_getreq *ppr_pgr; 196 }; 197 198 struct puffs_newinfo { 199 void **pni_cookie; 200 enum vtype *pni_vtype; 201 voff_t *pni_size; 202 dev_t *pni_rdev; 203 }; 204 205 #define PUFFS_MAKEKCRED(to, from) \ 206 /*LINTED: tnilxnaht, the cast is ok */ \ 207 const struct puffs_kcred *to = (const void *)from 208 #define PUFFS_MAKECRED(to, from) \ 209 /*LINTED: tnilxnaht, the cast is ok */ \ 210 const struct puffs_cred *to = (const void *)from 211 #define PUFFS_KCREDTOCRED(to, from) \ 212 /*LINTED: tnilxnaht, the cast is ok */ \ 213 to = (void *)from 214 215 #define PUFFS_MAKEKCID(to, from) \ 216 /*LINTED: tnilxnaht, the cast is ok */ \ 217 const struct puffs_kcid *to = (const void *)from 218 #define PUFFS_MAKECID(to, from) \ 219 /*LINTED: tnilxnaht, the cast is ok */ \ 220 const struct puffs_cid *to = (const void *)from 221 #define PUFFS_KCIDTOCID(to, from) \ 222 /*LINTED: tnilxnaht, the cast is ok */ \ 223 to = (void *)from 224 225 __BEGIN_DECLS 226 227 void puffs_calldispatcher(struct puffs_cc *); 228 229 void puffs_framev_input(struct puffs_usermount *, struct puffs_framectrl *, 230 struct puffs_fctrl_io *, struct puffs_putreq *); 231 int puffs_framev_output(struct puffs_usermount *, struct puffs_framectrl*, 232 struct puffs_fctrl_io *, struct puffs_putreq *); 233 void puffs_framev_exit(struct puffs_usermount *); 234 void puffs_framev_readclose(struct puffs_usermount *, 235 struct puffs_fctrl_io *, int); 236 void puffs_framev_writeclose(struct puffs_usermount *, 237 struct puffs_fctrl_io *, int); 238 void puffs_framev_notify(struct puffs_fctrl_io *, int); 239 240 struct puffs_cc *puffs_cc_create(struct puffs_usermount *); 241 void puffs_cc_destroy(struct puffs_cc *); 242 void puffs_goto(struct puffs_cc *); 243 244 __END_DECLS 245 246 #endif /* _PUFFS_PRIVATE_H_ */ 247
Indexes created Sat Oct 25 10:09:55 GMT 2025