puffs_priv.h revision 1.28
1 /* $NetBSD: puffs_priv.h,v 1.28 2007/10/26 17:35:02 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 struct puffs_executor { 91 struct puffs_req *pex_preq; 92 TAILQ_ENTRY(puffs_executor) pex_entries; 93 }; 94 95 /* 96 * usermount: describes one file system instance 97 */ 98 struct puffs_usermount { 99 struct puffs_ops pu_ops; 100 101 int pu_fd; 102 size_t pu_maxreqlen; 103 104 uint32_t pu_flags; 105 int pu_cc_stackshift; 106 107 int pu_kq; 108 int pu_state; 109 #define PU_STATEMASK 0xff 110 #define PU_INLOOP 0x100 111 #define PU_ASYNCFD 0x200 112 #define PU_HASKQ 0x400 113 #define PU_SETSTATE(pu, s) (pu->pu_state = (s) | (pu->pu_state & ~PU_STATEMASK)) 114 115 struct puffs_node *pu_pn_root; 116 117 LIST_HEAD(, puffs_node) pu_pnodelst; 118 LIST_HEAD(, puffs_cc) pu_ccnukelst; 119 TAILQ_HEAD(, puffs_cc) pu_sched; 120 121 TAILQ_HEAD(, puffs_executor) pu_exq; 122 123 struct puffs_node *(*pu_cmap)(void *); 124 125 pu_pathbuild_fn pu_pathbuild; 126 pu_pathtransform_fn pu_pathtransform; 127 pu_pathcmp_fn pu_pathcmp; 128 pu_pathfree_fn pu_pathfree; 129 pu_namemod_fn pu_namemod; 130 131 pu_errnotify_fn pu_errnotify; 132 133 struct puffs_framectrl pu_framectrl; 134 135 puffs_ml_loop_fn pu_ml_lfn; 136 struct timespec pu_ml_timeout; 137 struct timespec *pu_ml_timep; 138 139 struct puffs_kargs *pu_kargp; 140 141 void *pu_privdata; 142 }; 143 144 /* call context */ 145 146 struct puffs_cc { 147 struct puffs_usermount *pcc_pu; 148 struct puffs_req *pcc_preq; 149 150 ucontext_t pcc_uc; /* "continue" */ 151 ucontext_t pcc_uc_ret; /* "yield" */ 152 void *pcc_stack; 153 154 pid_t pcc_pid; 155 lwpid_t pcc_lid; 156 157 int pcc_flags; 158 struct puffs_putreq *pcc_ppr; 159 160 TAILQ_ENTRY(puffs_cc) entries; 161 LIST_ENTRY(puffs_cc) nlst_entries; 162 }; 163 #define PCC_FAKECC 0x01 164 #define PCC_REALCC 0x02 165 #define PCC_DONE 0x04 166 #define PCC_BORROWED 0x08 167 #define PCC_HASCALLER 0x10 168 #define PCC_THREADED 0x20 169 170 #define pcc_callstat(a) (a->pcc_flags & PCC_CALL_MASK) 171 #define pcc_callset(a, b) (a->pcc_flags = (a->pcc_flags & ~PCC_CALL_MASK) | b) 172 173 #define pcc_init_unreal(ap, type) \ 174 do { \ 175 memset(ap, 0, sizeof(*ap)); \ 176 (ap)->pcc_flags = type; \ 177 } while (/*CONSTCOND*/0) 178 179 /* 180 * Reqs 181 */ 182 183 struct puffs_getreq { 184 struct puffs_usermount *pgr_pu; 185 186 void *pgr_buf; 187 }; 188 189 struct puffs_putreq { 190 struct puffs_usermount *ppr_pu; 191 192 TAILQ_HEAD(, puffs_cc) ppr_pccq; 193 }; 194 195 struct puffs_newinfo { 196 void **pni_cookie; 197 enum vtype *pni_vtype; 198 voff_t *pni_size; 199 dev_t *pni_rdev; 200 }; 201 202 #define PUFFS_MAKEKCRED(to, from) \ 203 /*LINTED: tnilxnaht, the cast is ok */ \ 204 const struct puffs_kcred *to = (const void *)from 205 #define PUFFS_MAKECRED(to, from) \ 206 /*LINTED: tnilxnaht, the cast is ok */ \ 207 const struct puffs_cred *to = (const void *)from 208 #define PUFFS_KCREDTOCRED(to, from) \ 209 /*LINTED: tnilxnaht, the cast is ok */ \ 210 to = (void *)from 211 212 #define PUFFS_MAKEKCID(to, from) \ 213 /*LINTED: tnilxnaht, the cast is ok */ \ 214 const struct puffs_kcid *to = (const void *)from 215 #define PUFFS_MAKECID(to, from) \ 216 /*LINTED: tnilxnaht, the cast is ok */ \ 217 const struct puffs_cid *to = (const void *)from 218 #define PUFFS_KCIDTOCID(to, from) \ 219 /*LINTED: tnilxnaht, the cast is ok */ \ 220 to = (void *)from 221 222 __BEGIN_DECLS 223 224 void puffs_calldispatcher(struct puffs_cc *); 225 226 void puffs_framev_input(struct puffs_usermount *, struct puffs_framectrl *, 227 struct puffs_fctrl_io *, struct puffs_putreq *); 228 int puffs_framev_output(struct puffs_usermount *, struct puffs_framectrl*, 229 struct puffs_fctrl_io *, struct puffs_putreq *); 230 void puffs_framev_exit(struct puffs_usermount *); 231 void puffs_framev_readclose(struct puffs_usermount *, 232 struct puffs_fctrl_io *, int); 233 void puffs_framev_writeclose(struct puffs_usermount *, 234 struct puffs_fctrl_io *, int); 235 void puffs_framev_notify(struct puffs_fctrl_io *, int); 236 237 int puffs_cc_create(struct puffs_usermount *, struct puffs_req *, 238 int, struct puffs_cc **); 239 void puffs_cc_destroy(struct puffs_cc *); 240 void puffs_cc_setcaller(struct puffs_cc *, pid_t, lwpid_t); 241 void puffs_goto(struct puffs_cc *); 242 243 __END_DECLS 244 245 #endif /* _PUFFS_PRIVATE_H_ */ 246
Indexes created Wed Oct 29 20:09:47 GMT 2025