subr.c revision 1.18
1 /* $NetBSD: subr.c,v 1.18 2007/07/01 17:22:19 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 #include <sys/cdefs.h> 29 #if !defined(lint) 30 __RCSID("$NetBSD: subr.c,v 1.18 2007/07/01 17:22:19 pooka Exp $"); 31 #endif /* !lint */ 32 33 #include <sys/types.h> 34 #include <sys/time.h> 35 #include <sys/vnode.h> 36 #include <sys/dirent.h> 37 38 #include <assert.h> 39 #include <errno.h> 40 #include <puffs.h> 41 #include <stdlib.h> 42 #include <stdio.h> 43 #include <string.h> 44 #include <unistd.h> 45 46 #include "puffs_priv.h" 47 48 int 49 puffs_gendotdent(struct dirent **dent, ino_t id, int dotdot, size_t *reslen) 50 { 51 const char *name; 52 53 assert(dotdot == 0 || dotdot == 1); 54 name = dotdot == 0 ? "." : ".."; 55 56 return puffs_nextdent(dent, name, id, DT_DIR, reslen); 57 } 58 59 int 60 puffs_nextdent(struct dirent **dent, const char *name, ino_t id, uint8_t dtype, 61 size_t *reslen) 62 { 63 struct dirent *d = *dent; 64 65 /* check if we have enough room for our dent-aligned dirent */ 66 if (_DIRENT_RECLEN(d, strlen(name)) > *reslen) 67 return 0; 68 69 d->d_fileno = id; 70 d->d_type = dtype; 71 d->d_namlen = (uint16_t)strlen(name); 72 (void)memcpy(&d->d_name, name, (size_t)d->d_namlen); 73 d->d_name[d->d_namlen] = '\0'; 74 d->d_reclen = (uint16_t)_DIRENT_SIZE(d); 75 76 *reslen -= d->d_reclen; 77 *dent = _DIRENT_NEXT(d); 78 79 return 1; 80 } 81 82 /*ARGSUSED*/ 83 int 84 puffs_fsnop_unmount(struct puffs_cc *dontuse1, int dontuse2, 85 const struct puffs_cid *dontuse3) 86 { 87 88 /* would you like to see puffs rule again, my friend? */ 89 return 0; 90 } 91 92 /*ARGSUSED*/ 93 int 94 puffs_fsnop_sync(struct puffs_cc *dontuse1, int dontuse2, 95 const struct puffs_cred *dontuse3, const struct puffs_cid *dontuse4) 96 { 97 98 return 0; 99 } 100 101 /*ARGSUSED*/ 102 int 103 puffs_fsnop_statvfs(struct puffs_cc *dontuse1, struct statvfs *sbp, 104 const struct puffs_cid *dontuse2) 105 { 106 107 sbp->f_bsize = sbp->f_frsize = sbp->f_iosize = 512; 108 109 sbp->f_bfree=sbp->f_bavail=sbp->f_bresvd=sbp->f_blocks = (fsblkcnt_t)0; 110 sbp->f_ffree=sbp->f_favail=sbp->f_fresvd=sbp->f_files = (fsfilcnt_t)0; 111 112 return 0; 113 } 114 115 /* 116 * Just put the node, don't do anything else. Don't use this if 117 * your fs needs more cleanup. 118 */ 119 /*ARGSUSED2*/ 120 int 121 puffs_genfs_node_reclaim(struct puffs_cc *pcc, void *opc, 122 const struct puffs_cid *pcid) 123 { 124 struct puffs_usermount *pu = puffs_cc_getusermount(pcc); 125 126 puffs_pn_put(PU_CMAP(pu, opc)); 127 128 return 0; 129 } 130 131 /* 132 * Just a wrapper to make calling the above nicer without having to pass 133 * NULLs from application code 134 */ 135 void 136 puffs_zerostatvfs(struct statvfs *sbp) 137 { 138 139 puffs_fsnop_statvfs(NULL, sbp, 0); 140 } 141 142 /* 143 * Set vattr values for those applicable (i.e. not PUFFS_PUFFS_VNOVAL). 144 */ 145 void 146 puffs_setvattr(struct vattr *vap, const struct vattr *sva) 147 { 148 149 #define SETIFVAL(a, t) if (sva->a != (t)PUFFS_VNOVAL) vap->a = sva->a 150 if (sva->va_type != VNON) 151 vap->va_type = sva->va_type; 152 SETIFVAL(va_mode, mode_t); 153 SETIFVAL(va_nlink, nlink_t); 154 SETIFVAL(va_uid, uid_t); 155 SETIFVAL(va_gid, gid_t); 156 SETIFVAL(va_fsid, long); 157 SETIFVAL(va_size, u_quad_t); 158 SETIFVAL(va_fileid, ino_t); 159 SETIFVAL(va_blocksize, long); 160 SETIFVAL(va_atime.tv_sec, time_t); 161 SETIFVAL(va_ctime.tv_sec, time_t); 162 SETIFVAL(va_mtime.tv_sec, time_t); 163 SETIFVAL(va_birthtime.tv_sec, time_t); 164 SETIFVAL(va_atime.tv_nsec, long); 165 SETIFVAL(va_ctime.tv_nsec, long); 166 SETIFVAL(va_mtime.tv_nsec, long); 167 SETIFVAL(va_birthtime.tv_nsec, long); 168 SETIFVAL(va_gen, u_long); 169 SETIFVAL(va_flags, u_long); 170 SETIFVAL(va_rdev, dev_t); 171 SETIFVAL(va_bytes, u_quad_t); 172 #undef SETIFVAL 173 /* ignore va->va_vaflags */ 174 } 175 176 void 177 puffs_vattr_null(struct vattr *vap) 178 { 179 180 vap->va_type = VNON; 181 182 /* 183 * Assign individually so that it is safe even if size and 184 * sign of each member are varied. 185 */ 186 vap->va_mode = (mode_t)PUFFS_VNOVAL; 187 vap->va_nlink = (nlink_t)PUFFS_VNOVAL; 188 vap->va_uid = (uid_t)PUFFS_VNOVAL; 189 vap->va_gid = (gid_t)PUFFS_VNOVAL; 190 vap->va_fsid = PUFFS_VNOVAL; 191 vap->va_fileid = (ino_t)PUFFS_VNOVAL; 192 vap->va_size = (u_quad_t)PUFFS_VNOVAL; 193 vap->va_blocksize = sysconf(_SC_PAGESIZE); 194 vap->va_atime.tv_sec = 195 vap->va_mtime.tv_sec = 196 vap->va_ctime.tv_sec = 197 vap->va_birthtime.tv_sec = PUFFS_VNOVAL; 198 vap->va_atime.tv_nsec = 199 vap->va_mtime.tv_nsec = 200 vap->va_ctime.tv_nsec = 201 vap->va_birthtime.tv_nsec = PUFFS_VNOVAL; 202 vap->va_rdev = (dev_t)PUFFS_VNOVAL; 203 vap->va_bytes = (u_quad_t)PUFFS_VNOVAL; 204 205 vap->va_flags = 0; 206 vap->va_gen = 0; 207 vap->va_vaflags = 0; 208 } 209 210 static int vdmap[] = { 211 DT_UNKNOWN, /* VNON */ 212 DT_REG, /* VREG */ 213 DT_DIR, /* VDIR */ 214 DT_BLK, /* VBLK */ 215 DT_CHR, /* VCHR */ 216 DT_LNK, /* VLNK */ 217 DT_SOCK, /* VSUCK*/ 218 DT_FIFO, /* VFIFO*/ 219 DT_UNKNOWN /* VBAD */ 220 }; 221 /* XXX: DT_WHT ? */ 222 int 223 puffs_vtype2dt(enum vtype vt) 224 { 225 226 if ((int)vt >= VNON && vt < (sizeof(vdmap)/sizeof(vdmap[0]))) 227 return vdmap[vt]; 228 229 return DT_UNKNOWN; 230 } 231 232 enum vtype 233 puffs_mode2vt(mode_t mode) 234 { 235 236 switch (mode & S_IFMT) { 237 case S_IFIFO: 238 return VFIFO; 239 case S_IFCHR: 240 return VCHR; 241 case S_IFDIR: 242 return VDIR; 243 case S_IFBLK: 244 return VBLK; 245 case S_IFREG: 246 return VREG; 247 case S_IFLNK: 248 return VLNK; 249 case S_IFSOCK: 250 return VSOCK; 251 default: 252 return VBAD; /* XXX: not really true, but ... */ 253 } 254 } 255 256 void 257 puffs_stat2vattr(struct vattr *va, const struct stat *sb) 258 { 259 260 va->va_type = puffs_mode2vt(sb->st_mode); 261 va->va_mode = sb->st_mode; 262 va->va_nlink = sb->st_nlink; 263 va->va_uid = sb->st_uid; 264 va->va_gid = sb->st_gid; 265 va->va_fsid = sb->st_dev; 266 va->va_fileid = sb->st_ino; 267 va->va_size = sb->st_size; 268 va->va_blocksize = sb->st_blksize; 269 va->va_atime = sb->st_atimespec; 270 va->va_ctime = sb->st_ctimespec; 271 va->va_mtime = sb->st_mtimespec; 272 va->va_birthtime = sb->st_birthtimespec; 273 va->va_gen = sb->st_gen; 274 va->va_flags = sb->st_flags; 275 va->va_rdev = sb->st_rdev; 276 va->va_bytes = sb->st_blocks * sb->st_blksize; 277 va->va_filerev = 0; 278 va->va_vaflags = 0; 279 } 280 281 mode_t 282 puffs_addvtype2mode(mode_t mode, enum vtype type) 283 { 284 285 switch (type) { 286 case VCHR: 287 mode |= S_IFCHR; 288 break; 289 case VBLK: 290 mode |= S_IFBLK; 291 break; 292 default: 293 break; 294 } 295 296 return mode; 297 } 298
Indexes created Tue Oct 07 21:09:53 GMT 2025