puffs_priv.h revision 1.13
1 /* $NetBSD: puffs_priv.h,v 1.13 2007/07/01 15:30:15 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_fdnotify_fn fdnotfn; 44 45 struct kevent *evs; 46 size_t nfds; 47 48 struct timespec timeout; 49 struct timespec *timp; 50 51 LIST_HEAD(, puffs_fctrl_io) fb_ios; 52 LIST_HEAD(, puffs_fctrl_io) fb_ios_rmlist; 53 }; 54 55 struct puffs_fctrl_io { 56 int io_fd; 57 int stat; 58 59 struct puffs_framebuf *cur_in; 60 61 TAILQ_HEAD(, puffs_framebuf) snd_qing; /* queueing to be sent */ 62 TAILQ_HEAD(, puffs_framebuf) res_qing; /* q'ing for rescue */ 63 64 LIST_ENTRY(puffs_fctrl_io) fio_entries; 65 }; 66 #define FIO_WR 0x01 67 #define FIO_WRGONE 0x02 68 #define FIO_RDGONE 0x04 69 #define FIO_DEAD 0x08 70 71 #define FIO_EN_WRITE(fio) (!(fio->stat & FIO_WR)&& !TAILQ_EMPTY(&fio->snd_qing)) 72 #define FIO_RM_WRITE(fio) ((fio->stat & FIO_WR) && TAILQ_EMPTY(&fio->snd_qing)) 73 74 /* 75 * usermount: describes one file system instance 76 */ 77 struct puffs_usermount { 78 struct puffs_ops pu_ops; 79 struct puffs_kargs pu_kargs; 80 81 uint32_t pu_flags; 82 size_t pu_cc_stacksize; 83 84 int pu_kq; 85 int pu_haskq; 86 int pu_state; 87 #define PU_STATEMASK 0xff 88 #define PU_INLOOP 0x100 89 #define PU_ASYNCFD 0x200 90 #define PU_SETSTATE(pu, s) (pu->pu_state = (s) | (pu->pu_state & ~PU_STATEMASK)) 91 92 struct puffs_node *pu_pn_root; 93 94 LIST_HEAD(, puffs_node) pu_pnodelst; 95 LIST_HEAD(, puffs_cc) pu_ccnukelst; 96 97 struct puffs_node *(*pu_cmap)(void *); 98 99 pu_pathbuild_fn pu_pathbuild; 100 pu_pathtransform_fn pu_pathtransform; 101 pu_pathcmp_fn pu_pathcmp; 102 pu_pathfree_fn pu_pathfree; 103 pu_namemod_fn pu_namemod; 104 105 struct puffs_framectrl pu_framectrl; 106 107 puffs_ml_loop_fn pu_ml_lfn; 108 struct timespec pu_ml_timeout; 109 struct timespec *pu_ml_timep; 110 111 void *pu_privdata; 112 }; 113 114 /* call context */ 115 116 struct puffs_cc { 117 struct puffs_usermount *pcc_pu; 118 struct puffs_req *pcc_preq; 119 120 ucontext_t pcc_uc; /* "continue" */ 121 ucontext_t pcc_uc_ret; /* "yield" */ 122 void *pcc_stack; 123 124 int pcc_flags; 125 struct puffs_putreq *pcc_ppr; 126 127 TAILQ_ENTRY(puffs_cc) entries; 128 LIST_ENTRY(puffs_cc) nlst_entries; 129 }; 130 #define PCC_FAKECC 0x01 131 #define PCC_REALCC 0x02 132 #define PCC_DONE 0x04 133 #define PCC_BORROWED 0x08 134 135 #define pcc_callstat(a) (a->pcc_flags & PCC_CALL_MASK) 136 #define pcc_callset(a, b) (a->pcc_flags = (a->pcc_flags & ~PCC_CALL_MASK) | b) 137 138 #define pcc_init_local(ap) \ 139 do { \ 140 memset(ap, 0, sizeof(*ap)); \ 141 (ap)->pcc_flags = PCC_FAKECC; \ 142 } while (/*CONSTCOND*/0) 143 144 /* 145 * Reqs 146 */ 147 148 struct puffs_getreq { 149 struct puffs_usermount *pgr_pu; 150 151 struct puffs_reqh_get pgr_phg; 152 struct puffs_reqh_get pgr_phg_orig; 153 154 struct puffs_req *pgr_nextpreq; 155 size_t pgr_advance; 156 157 /* diagnostics */ 158 int pgr_nppr; 159 }; 160 161 struct puffs_putreq { 162 struct puffs_usermount *ppr_pu; 163 164 struct puffs_reqh_put ppr_php; 165 166 /* to adjust next request info */ 167 void **ppr_buf; 168 size_t *ppr_buflen; 169 uint64_t *ppr_id; 170 171 /* for delayed action freeing of preq's */ 172 TAILQ_HEAD(, puffs_cc) ppr_pccq; 173 174 /* diagnostics */ 175 struct puffs_getreq *ppr_pgr; 176 }; 177 178 #define PUFFS_MAKEKCRED(to, from) \ 179 /*LINTED: tnilxnaht, the cast is ok */ \ 180 const struct puffs_kcred *to = (const struct puffs_kcred *)from 181 #define PUFFS_MAKECRED(to, from) \ 182 /*LINTED: tnilxnaht, the cast is ok */ \ 183 const struct puffs_cred *to = (const struct puffs_cred *)from 184 #define PUFFS_KCREDTOCRED(to, from) \ 185 /*LINTED: tnilxnaht, the cast is ok */ \ 186 to = (struct puffs_cred *)from 187 188 __BEGIN_DECLS 189 190 void puffs_calldispatcher(struct puffs_cc *); 191 192 void puffs_framev_input(struct puffs_usermount *, struct puffs_framectrl *, 193 struct puffs_fctrl_io *, struct puffs_putreq *); 194 int puffs_framev_output(struct puffs_usermount *, struct puffs_framectrl*, 195 struct puffs_fctrl_io *); 196 void puffs_framev_exit(struct puffs_usermount *); 197 void puffs_framev_readclose(struct puffs_usermount *, 198 struct puffs_fctrl_io *, int); 199 void puffs_framev_writeclose(struct puffs_usermount *, 200 struct puffs_fctrl_io *, int); 201 202 void puffs_goto(struct puffs_cc *); 203 204 __END_DECLS 205 206 #endif /* _PUFFS_PRIVATE_H_ */ 207
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