. add all sys/sys headers not already present to help compiling . take netbsd dirent.h and struct dirent; main result is introducing d_type and d_namlen that have to be set by getdents() in all FS code implementing it . d_off is gone . alignment of the struct has become 8 bytes instead of 4 . remove _MAX_BLOCK_SIZE, _MIN_BLOCK_SIZE, _STATIC_BLOCK_SIZE . libminlib: cleanup unused yet duplicate code . mfs: throw out the long-broken v1, v2 support . new test for dirent contents filled by getdents() Change-Id: I1459755c7ba5e5d1c9396d3a587ce6e63ddc283e
321 lines
7.4 KiB
C
321 lines
7.4 KiB
C
/* $NetBSD: subr.c,v 1.23 2008/08/12 19:44:39 pooka Exp $ */
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/*
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* Copyright (c) 2006 Antti Kantee. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if !defined(lint)
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__RCSID("$NetBSD: subr.c,v 1.23 2008/08/12 19:44:39 pooka Exp $");
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#endif /* !lint */
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#include <sys/types.h>
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#include <sys/dirent.h>
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#include <sys/time.h>
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#include <assert.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <stddef.h>
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#include <string.h>
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#include <unistd.h>
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#include "puffs.h"
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#include "puffs_priv.h"
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int
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puffs_gendotdent(struct dirent **dent, ino_t id, int dotdot, size_t *reslen)
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{
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const char *name;
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assert(dotdot == 0 || dotdot == 1);
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name = dotdot == 0 ? "." : "..";
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return puffs_nextdent(dent, name, id, DT_DIR, reslen);
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}
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int
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puffs_nextdent(struct dirent **dent, const char *name, ino_t id, uint8_t dtype,
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size_t *reslen)
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{
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struct dirent *d = *dent;
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unsigned int len, reclen;
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int o;
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char *cp;
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/* check if we have enough room for our dent-aligned dirent */
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if (_DIRENT_RECLEN(d, strlen(name)) > *reslen)
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return 0;
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d->d_ino = id;
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/* Compute the length of the name */
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cp = memchr(name, '\0', NAME_MAX);
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if (cp == NULL)
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len = NAME_MAX;
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else
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len = cp - (name);
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/* Compute record length */
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reclen = offsetof(struct dirent, d_name) + len + 1;
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o = (reclen % sizeof(long));
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if (o != 0)
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reclen += sizeof(long) - o;
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d->d_reclen = (unsigned short) reclen;
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(void)memcpy(d->d_name, name, (size_t)len);
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d->d_name[len] = '\0';
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*reslen -= d->d_reclen;
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*dent = _DIRENT_NEXT(d);
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return 1;
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}
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/*ARGSUSED*/
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int
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puffs_fsnop_unmount(struct puffs_usermount *dontuse1, int dontuse2)
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{
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/* would you like to see puffs rule again, my friend? */
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return 0;
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}
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/*ARGSUSED*/
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int
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puffs_fsnop_sync(struct puffs_usermount *dontuse1, int dontuse2,
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const struct puffs_cred *dontuse3)
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{
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return 0;
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}
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/*ARGSUSED*/
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int
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puffs_fsnop_statvfs(struct puffs_usermount *dontuse1, struct statvfs *sbp)
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{
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/* FIXME: implement me
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sbp->f_bsize = sbp->f_frsize = sbp->f_iosize = 512;
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sbp->f_bfree=sbp->f_bavail=sbp->f_bresvd=sbp->f_blocks = (fsblkcnt_t)0;
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sbp->f_ffree=sbp->f_favail=sbp->f_fresvd=sbp->f_files = (fsfilcnt_t)0;
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*/
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return 0;
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}
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/*ARGSUSED3*/
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int
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puffs_genfs_node_getattr(struct puffs_usermount *pu, puffs_cookie_t opc,
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struct vattr *va, const struct puffs_cred *pcr)
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{
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struct puffs_node *pn = PU_CMAP(pu, opc);
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memcpy(va, &pn->pn_va, sizeof(struct vattr));
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return 0;
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}
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/*
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* Just put the node, don't do anything else. Don't use this if
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* your fs needs more cleanup.
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*/
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/*ARGSUSED2*/
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int
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puffs_genfs_node_reclaim(struct puffs_usermount *pu, puffs_cookie_t opc)
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{
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puffs_pn_put(PU_CMAP(pu, opc));
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return 0;
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}
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/*
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* Just a wrapper to make calling the above nicer without having to pass
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* NULLs from application code
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*/
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void
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puffs_zerostatvfs(struct statvfs *sbp)
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{
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puffs_fsnop_statvfs(NULL, sbp);
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}
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/*
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* Set vattr values for those applicable (i.e. not PUFFS_VNOVAL).
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*/
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void
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puffs_setvattr(struct vattr *vap, const struct vattr *sva)
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{
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#define SETIFVAL(a, t) if (sva->a != (t)PUFFS_VNOVAL) vap->a = sva->a
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if (sva->va_type != VNON)
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vap->va_type = sva->va_type;
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SETIFVAL(va_mode, mode_t);
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SETIFVAL(va_nlink, nlink_t);
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SETIFVAL(va_uid, uid_t);
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SETIFVAL(va_gid, gid_t);
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SETIFVAL(va_fsid, long);
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SETIFVAL(va_size, u_quad_t);
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SETIFVAL(va_fileid, ino_t);
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SETIFVAL(va_blocksize, long);
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SETIFVAL(va_atime.tv_sec, time_t);
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SETIFVAL(va_ctime.tv_sec, time_t);
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SETIFVAL(va_mtime.tv_sec, time_t);
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SETIFVAL(va_birthtime.tv_sec, time_t);
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SETIFVAL(va_atime.tv_nsec, long);
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SETIFVAL(va_ctime.tv_nsec, long);
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SETIFVAL(va_mtime.tv_nsec, long);
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SETIFVAL(va_birthtime.tv_nsec, long);
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SETIFVAL(va_gen, u_long);
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SETIFVAL(va_flags, u_long);
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SETIFVAL(va_rdev, dev_t);
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SETIFVAL(va_bytes, u_quad_t);
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#undef SETIFVAL
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/* ignore va->va_vaflags */
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}
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void
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puffs_vattr_null(struct vattr *vap)
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{
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vap->va_type = VNON;
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/*
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* Assign individually so that it is safe even if size and
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* sign of each member are varied.
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*/
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vap->va_mode = (mode_t)PUFFS_VNOVAL;
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vap->va_nlink = (nlink_t)PUFFS_VNOVAL;
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vap->va_uid = (uid_t)PUFFS_VNOVAL;
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vap->va_gid = (gid_t)PUFFS_VNOVAL;
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vap->va_fsid = PUFFS_VNOVAL;
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vap->va_fileid = (ino_t)PUFFS_VNOVAL;
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vap->va_size = (u_quad_t)PUFFS_VNOVAL;
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vap->va_blocksize = sysconf(_SC_PAGESIZE);
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vap->va_atime.tv_sec =
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vap->va_mtime.tv_sec =
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vap->va_ctime.tv_sec =
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vap->va_birthtime.tv_sec = PUFFS_VNOVAL;
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vap->va_atime.tv_nsec =
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vap->va_mtime.tv_nsec =
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vap->va_ctime.tv_nsec =
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vap->va_birthtime.tv_nsec = PUFFS_VNOVAL;
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vap->va_rdev = (dev_t)PUFFS_VNOVAL;
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vap->va_bytes = (u_quad_t)PUFFS_VNOVAL;
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vap->va_flags = 0;
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vap->va_gen = 0;
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vap->va_vaflags = 0;
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}
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static int vdmap[] = {
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DT_UNKNOWN, /* VNON */
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DT_REG, /* VREG */
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DT_DIR, /* VDIR */
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DT_BLK, /* VBLK */
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DT_CHR, /* VCHR */
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DT_LNK, /* VLNK */
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DT_SOCK, /* VSUCK*/
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DT_FIFO, /* VFIFO*/
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DT_UNKNOWN /* VBAD */
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};
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/* XXX: DT_WHT ? */
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int
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puffs_vtype2dt(enum vtype vt)
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{
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if ((int)vt >= VNON && vt < (sizeof(vdmap)/sizeof(vdmap[0])))
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return vdmap[vt];
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return DT_UNKNOWN;
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}
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enum vtype
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puffs_mode2vt(mode_t mode)
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{
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switch (mode & S_IFMT) {
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case S_IFIFO:
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return VFIFO;
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case S_IFCHR:
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return VCHR;
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case S_IFDIR:
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return VDIR;
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case S_IFBLK:
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return VBLK;
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case S_IFREG:
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return VREG;
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case S_IFLNK:
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return VLNK;
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case S_IFSOCK:
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return VSOCK;
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default:
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return VBAD; /* XXX: not really true, but ... */
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}
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}
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void
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puffs_stat2vattr(struct vattr *va, const struct stat *sb)
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{
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va->va_type = puffs_mode2vt(sb->st_mode);
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va->va_mode = sb->st_mode;
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va->va_nlink = sb->st_nlink;
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va->va_uid = sb->st_uid;
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va->va_gid = sb->st_gid;
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va->va_fsid = sb->st_dev;
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va->va_fileid = sb->st_ino;
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va->va_size = sb->st_size;
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va->va_atime = sb->st_atimespec;
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va->va_ctime = sb->st_ctimespec;
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va->va_mtime = sb->st_mtimespec;
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va->va_blocksize = sb->st_blksize;
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va->va_birthtime = sb->st_birthtimespec;
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va->va_gen = sb->st_gen;
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va->va_flags = sb->st_flags;
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va->va_rdev = sb->st_rdev;
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va->va_bytes = sb->st_blocks * sb->st_blksize;
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va->va_filerev = 0;
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va->va_vaflags = 0;
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}
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mode_t
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puffs_addvtype2mode(mode_t mode, enum vtype type)
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{
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switch (type) {
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case VCHR:
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mode |= S_IFCHR;
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break;
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case VBLK:
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mode |= S_IFBLK;
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break;
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default:
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break;
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}
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return mode;
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}
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