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subr.c revision 1.21
      1  1.21  pooka /*      $NetBSD: subr.c,v 1.21 2007/05/20 17:47:12 pooka Exp $        */
      2   1.1  pooka 
      3   1.1  pooka /*
      4   1.1  pooka  * Copyright (c) 2006  Antti Kantee.  All Rights Reserved.
      5   1.1  pooka  *
      6   1.1  pooka  * Redistribution and use in source and binary forms, with or without
      7   1.1  pooka  * modification, are permitted provided that the following conditions
      8   1.1  pooka  * are met:
      9   1.1  pooka  * 1. Redistributions of source code must retain the above copyright
     10   1.1  pooka  *    notice, this list of conditions and the following disclaimer.
     11   1.1  pooka  * 2. Redistributions in binary form must reproduce the above copyright
     12   1.1  pooka  *    notice, this list of conditions and the following disclaimer in the
     13   1.1  pooka  *    documentation and/or other materials provided with the distribution.
     14   1.1  pooka  * 3. The name of the company nor the name of the author may be used to
     15   1.1  pooka  *    endorse or promote products derived from this software without specific
     16   1.1  pooka  *    prior written permission.
     17   1.1  pooka  *
     18   1.1  pooka  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
     19   1.1  pooka  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     20   1.1  pooka  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     21   1.1  pooka  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     22   1.1  pooka  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     23   1.1  pooka  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     24   1.1  pooka  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     25   1.1  pooka  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     26   1.1  pooka  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     27   1.1  pooka  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     28   1.1  pooka  * SUCH DAMAGE.
     29   1.1  pooka  */
     30   1.1  pooka 
     31   1.1  pooka #include <sys/cdefs.h>
     32   1.1  pooka #ifndef lint
     33  1.21  pooka __RCSID("$NetBSD: subr.c,v 1.21 2007/05/20 17:47:12 pooka Exp $");
     34   1.1  pooka #endif /* !lint */
     35   1.1  pooka 
     36   1.1  pooka #include <assert.h>
     37   1.1  pooka #include <errno.h>
     38   1.1  pooka #include <puffs.h>
     39   1.1  pooka #include <stdlib.h>
     40   1.1  pooka #include <util.h>
     41   1.1  pooka 
     42   1.1  pooka #include "psshfs.h"
     43   1.1  pooka #include "sftp_proto.h"
     44   1.1  pooka 
     45   1.1  pooka static void
     46   1.1  pooka freedircache(struct psshfs_dir *base, size_t count)
     47   1.1  pooka {
     48   1.1  pooka 	int i;
     49   1.1  pooka 
     50   1.1  pooka 	for (i = 0; i < count; i++) {
     51   1.1  pooka 		free(base[i].entryname);
     52   1.1  pooka 		base[i].entryname = NULL;
     53   1.1  pooka 	}
     54   1.1  pooka 
     55   1.1  pooka 	free(base);
     56   1.1  pooka }
     57   1.1  pooka 
     58   1.1  pooka #define ENTRYCHUNK 16
     59   1.1  pooka static void
     60   1.1  pooka allocdirs(struct psshfs_node *psn)
     61   1.1  pooka {
     62   1.1  pooka 	size_t oldtot = psn->denttot;
     63   1.1  pooka 
     64   1.1  pooka 	psn->denttot += ENTRYCHUNK;
     65   1.1  pooka 	psn->dir = erealloc(psn->dir,
     66   1.1  pooka 	    psn->denttot * sizeof(struct psshfs_dir));
     67   1.1  pooka 	memset(psn->dir + oldtot, 0, ENTRYCHUNK * sizeof(struct psshfs_dir));
     68  1.21  pooka 
     69  1.21  pooka #ifdef SUPERREADDIR
     70  1.21  pooka 	psn->da = erealloc(psn->da, psn->denttot * sizeof(struct delayattr));
     71  1.21  pooka #endif
     72   1.1  pooka }
     73   1.1  pooka 
     74   1.1  pooka struct psshfs_dir *
     75   1.9  pooka lookup(struct psshfs_dir *bdir, size_t ndir, const char *name)
     76   1.1  pooka {
     77   1.9  pooka 	struct psshfs_dir *test;
     78   1.1  pooka 	int i;
     79   1.1  pooka 
     80   1.1  pooka 	for (i = 0; i < ndir; i++) {
     81   1.9  pooka 		test = &bdir[i];
     82   1.9  pooka 		if (test->valid != 1)
     83   1.1  pooka 			continue;
     84   1.9  pooka 		if (strcmp(test->entryname, name) == 0)
     85   1.9  pooka 			return test;
     86   1.9  pooka 	}
     87   1.9  pooka 
     88   1.9  pooka 	return NULL;
     89   1.9  pooka }
     90   1.9  pooka 
     91   1.9  pooka static struct psshfs_dir *
     92   1.9  pooka lookup_by_entry(struct psshfs_dir *bdir, size_t ndir, struct puffs_node *entry)
     93   1.9  pooka {
     94   1.9  pooka 	struct psshfs_dir *test;
     95   1.9  pooka 	int i;
     96   1.9  pooka 
     97   1.9  pooka 	for (i = 0; i < ndir; i++) {
     98   1.9  pooka 		test = &bdir[i];
     99   1.9  pooka 		if (test->valid != 1)
    100   1.9  pooka 			continue;
    101   1.9  pooka 		if (test->entry == entry)
    102   1.9  pooka 			return test;
    103   1.1  pooka 	}
    104   1.1  pooka 
    105   1.1  pooka 	return NULL;
    106   1.1  pooka }
    107   1.1  pooka 
    108   1.8  pooka #ifdef SUPERREADDIR
    109   1.8  pooka struct readdirattr {
    110   1.8  pooka 	struct psshfs_node *psn;
    111   1.8  pooka 	int idx;
    112   1.8  pooka 	char entryname[MAXPATHLEN+1];
    113   1.8  pooka };
    114   1.8  pooka 
    115   1.8  pooka static void
    116  1.14  pooka readdir_getattr_resp(struct puffs_usermount *pu,
    117  1.18  pooka 	struct puffs_framebuf *pb, void *arg, int error)
    118   1.8  pooka {
    119   1.8  pooka 	struct readdirattr *rda = arg;
    120   1.8  pooka 	struct psshfs_node *psn = rda->psn;
    121   1.8  pooka 	struct psshfs_dir *pdir;
    122   1.8  pooka 	struct vattr va;
    123   1.8  pooka 
    124  1.18  pooka 	if (error)
    125  1.18  pooka 		goto out;
    126  1.18  pooka 
    127   1.8  pooka 	pdir = lookup(psn->dir, psn->denttot, rda->entryname);
    128   1.8  pooka 	if (!pdir)
    129   1.8  pooka 		goto out;
    130   1.8  pooka 
    131   1.8  pooka 	if (psbuf_expect_attrs(pb, &va))
    132   1.8  pooka 		goto out;
    133   1.8  pooka 
    134   1.8  pooka 	if (pdir->entry) {
    135   1.8  pooka 		struct psshfs_node *psn_targ;
    136   1.8  pooka 		psn_targ = pdir->entry->pn_data;
    137   1.8  pooka 
    138   1.8  pooka 		puffs_setvattr(&pdir->entry->pn_va, &va);
    139   1.8  pooka 		psn_targ->attrread = time(NULL);
    140   1.8  pooka 	} else {
    141   1.8  pooka 		puffs_setvattr(&pdir->va, &va);
    142   1.8  pooka 		pdir->attrread = time(NULL);
    143   1.8  pooka 	}
    144   1.8  pooka 
    145   1.8  pooka  out:
    146   1.8  pooka 	free(rda);
    147  1.14  pooka 	puffs_framebuf_destroy(pb);
    148   1.8  pooka }
    149   1.8  pooka 
    150  1.21  pooka static void
    151  1.14  pooka readdir_getattr(struct puffs_usermount *pu, struct psshfs_node *psn,
    152   1.8  pooka 	const char *basepath, int idx)
    153   1.8  pooka {
    154   1.8  pooka 	char path[MAXPATHLEN+1];
    155  1.14  pooka 	struct psshfs_ctx *pctx = puffs_getspecific(pu);
    156   1.8  pooka 	struct psshfs_dir *pdir = psn->dir;
    157  1.14  pooka 	struct puffs_framebuf *pb;
    158   1.8  pooka 	struct readdirattr *rda;
    159   1.8  pooka 	const char *entryname = pdir[idx].entryname;
    160   1.8  pooka 	uint32_t reqid = NEXTREQ(pctx);
    161   1.8  pooka 
    162   1.8  pooka 	rda = emalloc(sizeof(struct readdirattr));
    163   1.8  pooka 	rda->psn = psn;
    164   1.8  pooka 	rda->idx = idx;
    165   1.8  pooka 	strlcpy(rda->entryname, entryname, sizeof(rda->entryname));
    166   1.8  pooka 
    167   1.8  pooka 	strcpy(path, basepath);
    168   1.8  pooka 	strcat(path, "/");
    169   1.8  pooka 	strlcat(path, entryname, sizeof(path));
    170   1.8  pooka 
    171  1.14  pooka 	pb = psbuf_makeout();
    172   1.8  pooka 	psbuf_req_str(pb, SSH_FXP_LSTAT, reqid, path);
    173  1.21  pooka 	psn->da[psn->nextda].pufbuf = pb;
    174  1.21  pooka 	psn->da[psn->nextda].rda = rda;
    175  1.21  pooka 	psn->nextda++;
    176  1.21  pooka }
    177  1.21  pooka 
    178  1.21  pooka static void
    179  1.21  pooka readdir_getattr_send(struct puffs_usermount *pu, struct psshfs_node *psn)
    180  1.21  pooka {
    181  1.21  pooka 	struct psshfs_ctx *pctx = puffs_getspecific(pu);
    182  1.21  pooka 	size_t i;
    183  1.21  pooka 	int rv = 0;
    184  1.21  pooka 
    185  1.21  pooka 	for (i = 0; i < psn->nextda; i++)
    186  1.21  pooka 		SENDCB(psn->da[i].pufbuf, readdir_getattr_resp, psn->da[i].rda);
    187  1.16  pooka 
    188  1.16  pooka  out:
    189  1.21  pooka 	return;
    190   1.8  pooka }
    191   1.8  pooka #endif
    192   1.8  pooka 
    193   1.1  pooka int
    194  1.12  pooka getpathattr(struct puffs_cc *pcc, const char *path, struct vattr *vap)
    195  1.12  pooka {
    196  1.12  pooka 	PSSHFSAUTOVAR(pcc);
    197  1.12  pooka 
    198  1.12  pooka 	psbuf_req_str(pb, SSH_FXP_LSTAT, reqid, path);
    199  1.15  pooka 	GETRESPONSE(pb);
    200  1.12  pooka 
    201  1.12  pooka 	rv = psbuf_expect_attrs(pb, vap);
    202  1.12  pooka 
    203  1.16  pooka  out:
    204  1.12  pooka 	PSSHFSRETURN(rv);
    205  1.12  pooka }
    206  1.12  pooka 
    207  1.12  pooka int
    208  1.12  pooka getnodeattr(struct puffs_cc *pcc, struct puffs_node *pn)
    209  1.12  pooka {
    210  1.12  pooka 	struct puffs_usermount *pu = puffs_cc_getusermount(pcc);
    211  1.12  pooka 	struct psshfs_node *psn = pn->pn_data;
    212  1.12  pooka 	struct vattr va;
    213  1.12  pooka 	int rv;
    214  1.12  pooka 
    215  1.12  pooka 	if ((time(NULL) - psn->attrread) >= PSSHFS_REFRESHIVAL) {
    216  1.12  pooka 		rv = getpathattr(pcc, PNPATH(pn), &va);
    217  1.12  pooka 		if (rv)
    218  1.12  pooka 			return rv;
    219  1.12  pooka 
    220  1.12  pooka 		/*
    221  1.12  pooka 		 * Check if the file was modified from below us.  If
    222  1.12  pooka 		 * so, invalidate page cache.  This is the only sensible
    223  1.12  pooka 		 * place we can do this in.
    224  1.12  pooka 		 */
    225  1.12  pooka 		if (psn->attrread)
    226  1.12  pooka 			if (pn->pn_va.va_mtime.tv_sec != va.va_mtime.tv_sec)
    227  1.12  pooka 				puffs_inval_pagecache_node(pu, pn);
    228  1.12  pooka 
    229  1.12  pooka 		puffs_setvattr(&pn->pn_va, &va);
    230  1.12  pooka 		psn->attrread = time(NULL);
    231  1.12  pooka 	}
    232  1.12  pooka 
    233  1.12  pooka 	return 0;
    234  1.12  pooka }
    235  1.12  pooka 
    236  1.12  pooka int
    237   1.1  pooka sftp_readdir(struct puffs_cc *pcc, struct psshfs_ctx *pctx,
    238   1.1  pooka 	struct puffs_node *pn)
    239   1.1  pooka {
    240  1.15  pooka 	struct puffs_usermount *pu = puffs_cc_getusermount(pcc);
    241   1.1  pooka 	struct psshfs_node *psn = pn->pn_data;
    242   1.1  pooka 	struct psshfs_dir *olddir, *testd;
    243  1.14  pooka 	struct puffs_framebuf *pb;
    244   1.1  pooka 	uint32_t reqid = NEXTREQ(pctx);
    245  1.10  pooka 	uint32_t count, dhandlen;
    246   1.1  pooka 	char *dhand = NULL;
    247  1.10  pooka 	size_t nent;
    248   1.1  pooka 	char *longname;
    249   1.1  pooka 	int idx, rv;
    250   1.1  pooka 
    251   1.1  pooka 	assert(pn->pn_va.va_type == VDIR);
    252  1.16  pooka 	idx = 0;
    253  1.16  pooka 	olddir = psn->dir;
    254  1.16  pooka 	nent = psn->dentnext;
    255   1.1  pooka 
    256   1.1  pooka 	if (psn->dir && (time(NULL) - psn->dentread) < PSSHFS_REFRESHIVAL)
    257   1.1  pooka 		return 0;
    258   1.1  pooka 
    259   1.5  pooka 	puffs_inval_namecache_dir(puffs_cc_getusermount(pcc), pn);
    260   1.5  pooka 
    261  1.14  pooka 	pb = psbuf_makeout();
    262   1.7  pooka 	psbuf_req_str(pb, SSH_FXP_OPENDIR, reqid, PNPATH(pn));
    263  1.15  pooka 	GETRESPONSE(pb);
    264   1.1  pooka 
    265   1.1  pooka 	rv = psbuf_expect_handle(pb, &dhand, &dhandlen);
    266   1.1  pooka 	if (rv)
    267   1.1  pooka 		goto wayout;
    268   1.1  pooka 
    269   1.1  pooka 	/*
    270   1.1  pooka 	 * Well, the following is O(n^2), so feel free to improve if it
    271   1.1  pooka 	 * gets too taxing on your system.
    272   1.1  pooka 	 */
    273   1.1  pooka 
    274   1.8  pooka 	/*
    275   1.8  pooka 	 * note: for the "getattr in batch" to work, this must be before
    276   1.8  pooka 	 * the attribute-getting.  Otherwise times for first entries in
    277   1.8  pooka 	 * large directories might expire before the directory itself and
    278   1.8  pooka 	 * result in one-by-one attribute fetching.
    279   1.8  pooka 	 */
    280   1.8  pooka 	psn->dentread = time(NULL);
    281   1.8  pooka 
    282   1.1  pooka 	psn->dentnext = 0;
    283   1.1  pooka 	psn->denttot = 0;
    284   1.1  pooka 	psn->dir = NULL;
    285  1.21  pooka #ifdef SUPERREADDIR
    286  1.21  pooka 	psn->nextda = 0;
    287  1.21  pooka #endif /* SUPERREADDIR */
    288   1.1  pooka 
    289   1.1  pooka 	for (;;) {
    290   1.1  pooka 		reqid = NEXTREQ(pctx);
    291  1.14  pooka 		psbuf_recycleout(pb);
    292   1.1  pooka 		psbuf_req_data(pb, SSH_FXP_READDIR, reqid, dhand, dhandlen);
    293  1.15  pooka 		GETRESPONSE(pb);
    294   1.1  pooka 
    295   1.1  pooka 		/* check for EOF */
    296  1.14  pooka 		if (psbuf_get_type(pb) == SSH_FXP_STATUS) {
    297   1.1  pooka 			rv = psbuf_expect_status(pb);
    298   1.1  pooka 			goto out;
    299   1.1  pooka 		}
    300   1.1  pooka 		rv = psbuf_expect_name(pb, &count);
    301   1.1  pooka 		if (rv)
    302   1.1  pooka 			goto out;
    303   1.1  pooka 
    304   1.1  pooka 		for (; count--; idx++) {
    305   1.1  pooka 			if (idx == psn->denttot)
    306   1.1  pooka 				allocdirs(psn);
    307  1.14  pooka 			if ((rv = psbuf_get_str(pb,
    308  1.14  pooka 			    &psn->dir[idx].entryname, NULL)))
    309   1.1  pooka 				goto out;
    310  1.14  pooka 			if ((rv = psbuf_get_str(pb, &longname, NULL)))
    311   1.1  pooka 				goto out;
    312  1.17  pooka 			if ((rv = psbuf_get_vattr(pb, &psn->dir[idx].va))) {
    313  1.17  pooka 				free(longname);
    314   1.1  pooka 				goto out;
    315  1.17  pooka 			}
    316   1.1  pooka 			if (sscanf(longname, "%*s%d",
    317   1.1  pooka 			    &psn->dir[idx].va.va_nlink) != 1) {
    318   1.1  pooka 				rv = EPROTO;
    319   1.1  pooka 				goto out;
    320   1.1  pooka 			}
    321   1.1  pooka 			free(longname);
    322   1.1  pooka 
    323   1.1  pooka 			testd = lookup(olddir, nent, psn->dir[idx].entryname);
    324   1.1  pooka 			if (testd) {
    325   1.1  pooka 				psn->dir[idx].entry = testd->entry;
    326   1.8  pooka 				psn->dir[idx].va = testd->va;
    327   1.1  pooka 			} else {
    328   1.1  pooka 				psn->dir[idx].entry = NULL;
    329   1.1  pooka 				psn->dir[idx].va.va_fileid = pctx->nextino++;
    330   1.1  pooka 			}
    331   1.8  pooka #ifdef SUPERREADDIR
    332   1.8  pooka 			/*
    333   1.8  pooka 			 * XXX: there's a dangling pointer race here if
    334   1.8  pooka 			 * the server responds to our queries out-of-order.
    335   1.8  pooka 			 * fixxxme some day
    336   1.8  pooka 			 */
    337  1.21  pooka 			readdir_getattr(puffs_cc_getusermount(pcc),
    338  1.14  pooka 			    psn, PNPATH(pn), idx);
    339   1.8  pooka #endif
    340   1.1  pooka 			psn->dir[idx].valid = 1;
    341   1.1  pooka 		}
    342   1.1  pooka 	}
    343   1.1  pooka 
    344   1.1  pooka  out:
    345  1.21  pooka 	/* fire off getattr requests */
    346  1.21  pooka 	readdir_getattr_send(pu, psn);
    347  1.21  pooka 
    348   1.1  pooka 	/* XXX: rv */
    349   1.1  pooka 	psn->dentnext = idx;
    350   1.1  pooka 	freedircache(olddir, nent);
    351   1.1  pooka 
    352   1.1  pooka 	reqid = NEXTREQ(pctx);
    353  1.14  pooka 	psbuf_recycleout(pb);
    354   1.1  pooka 	psbuf_req_data(pb, SSH_FXP_CLOSE, reqid, dhand, dhandlen);
    355  1.15  pooka 	JUSTSEND(pb);
    356  1.11  pooka 	free(dhand);
    357  1.21  pooka 
    358  1.12  pooka 	return rv;
    359   1.1  pooka 
    360   1.1  pooka  wayout:
    361   1.1  pooka 	free(dhand);
    362  1.11  pooka 	PSSHFSRETURN(rv);
    363   1.1  pooka }
    364   1.1  pooka 
    365   1.1  pooka struct puffs_node *
    366   1.1  pooka makenode(struct puffs_usermount *pu, struct puffs_node *parent,
    367   1.1  pooka 	struct psshfs_dir *pd, const struct vattr *vap)
    368   1.1  pooka {
    369   1.1  pooka 	struct psshfs_node *psn_parent = parent->pn_data;
    370   1.1  pooka 	struct psshfs_node *psn;
    371   1.1  pooka 	struct puffs_node *pn;
    372   1.1  pooka 
    373   1.1  pooka 	psn = emalloc(sizeof(struct psshfs_node));
    374   1.1  pooka 	memset(psn, 0, sizeof(struct psshfs_node));
    375   1.1  pooka 
    376   1.1  pooka 	pn = puffs_pn_new(pu, psn);
    377   1.1  pooka 	if (!pn) {
    378   1.1  pooka 		free(psn);
    379   1.1  pooka 		return NULL;
    380   1.1  pooka 	}
    381   1.1  pooka 	puffs_setvattr(&pn->pn_va, &pd->va);
    382   1.8  pooka 	psn->attrread = pd->attrread;
    383   1.1  pooka 	puffs_setvattr(&pn->pn_va, vap);
    384   1.1  pooka 
    385   1.1  pooka 	pd->entry = pn;
    386   1.1  pooka 	psn->parent = parent;
    387   1.1  pooka 	psn_parent->childcount++;
    388   1.1  pooka 
    389   1.1  pooka 	return pn;
    390   1.1  pooka }
    391   1.1  pooka 
    392   1.1  pooka struct puffs_node *
    393   1.1  pooka allocnode(struct puffs_usermount *pu, struct puffs_node *parent,
    394   1.1  pooka 	const char *entryname, const struct vattr *vap)
    395   1.1  pooka {
    396  1.13  pooka 	struct psshfs_ctx *pctx = puffs_getspecific(pu);
    397   1.1  pooka 	struct psshfs_dir *pd;
    398   1.3  pooka 	struct puffs_node *pn;
    399   1.1  pooka 
    400   1.1  pooka 	pd = direnter(parent, entryname);
    401   1.1  pooka 
    402   1.1  pooka 	pd->va.va_fileid = pctx->nextino++;
    403   1.2  pooka 	if (vap->va_type == VDIR) {
    404   1.1  pooka 		pd->va.va_nlink = 2;
    405   1.2  pooka 		parent->pn_va.va_nlink++;
    406   1.2  pooka 	} else {
    407   1.1  pooka 		pd->va.va_nlink = 1;
    408   1.2  pooka 	}
    409   1.1  pooka 
    410   1.3  pooka 	pn = makenode(pu, parent, pd, vap);
    411   1.3  pooka 	if (pn)
    412   1.3  pooka 		pd->va.va_fileid = pn->pn_va.va_fileid;
    413   1.3  pooka 
    414   1.3  pooka 	return pn;
    415   1.1  pooka }
    416   1.1  pooka 
    417   1.1  pooka struct psshfs_dir *
    418   1.1  pooka direnter(struct puffs_node *parent, const char *entryname)
    419   1.1  pooka {
    420   1.1  pooka 	struct psshfs_node *psn_parent = parent->pn_data;
    421   1.1  pooka 	struct psshfs_dir *pd;
    422   1.1  pooka 	int i;
    423   1.1  pooka 
    424   1.1  pooka 	/* create directory entry */
    425   1.1  pooka 	if (psn_parent->denttot == psn_parent->dentnext)
    426   1.1  pooka 		allocdirs(psn_parent);
    427   1.1  pooka 
    428   1.1  pooka 	i = psn_parent->dentnext;
    429   1.1  pooka 	pd = &psn_parent->dir[i];
    430   1.1  pooka 	pd->entryname = estrdup(entryname);
    431   1.1  pooka 	pd->valid = 1;
    432   1.8  pooka 	pd->attrread = 0;
    433   1.4  pooka 	puffs_vattr_null(&pd->va);
    434   1.1  pooka 	psn_parent->dentnext++;
    435   1.1  pooka 
    436   1.1  pooka 	return pd;
    437   1.1  pooka }
    438   1.1  pooka 
    439   1.1  pooka void
    440   1.9  pooka doreclaim(struct puffs_node *pn)
    441   1.9  pooka {
    442   1.9  pooka 	struct psshfs_node *psn = pn->pn_data;
    443   1.9  pooka 	struct psshfs_node *psn_parent;
    444   1.9  pooka 	struct psshfs_dir *dent;
    445   1.9  pooka 
    446   1.9  pooka 	psn_parent = psn->parent->pn_data;
    447   1.9  pooka 	psn_parent->childcount--;
    448   1.9  pooka 
    449  1.11  pooka 	/*
    450  1.11  pooka 	 * Null out entry from directory.  Do not treat a missing entry
    451  1.11  pooka 	 * as an invariant error, since the node might be removed from
    452  1.11  pooka 	 * under us, and we might do a readdir before the reclaim resulting
    453  1.11  pooka 	 * in no directory entry in the parent directory.
    454  1.11  pooka 	 */
    455   1.9  pooka 	dent = lookup_by_entry(psn_parent->dir, psn_parent->dentnext, pn);
    456  1.11  pooka 	if (dent)
    457  1.11  pooka 		dent->entry = NULL;
    458   1.9  pooka 
    459  1.21  pooka 	if (pn->pn_va.va_type == VDIR) {
    460   1.9  pooka 		freedircache(psn->dir, psn->dentnext);
    461  1.21  pooka #ifdef SUPERREADDIR
    462  1.21  pooka 		free(psn->da);
    463  1.21  pooka #endif
    464  1.21  pooka 	}
    465   1.9  pooka 
    466   1.9  pooka 	puffs_pn_put(pn);
    467   1.9  pooka }
    468   1.9  pooka 
    469   1.9  pooka void
    470   1.9  pooka nukenode(struct puffs_node *node, const char *entryname, int reclaim)
    471   1.1  pooka {
    472   1.1  pooka 	struct psshfs_node *psn, *psn_parent;
    473   1.1  pooka 	struct psshfs_dir *pd;
    474   1.1  pooka 
    475   1.1  pooka 	psn = node->pn_data;
    476   1.1  pooka 	psn_parent = psn->parent->pn_data;
    477   1.1  pooka 	pd = lookup(psn_parent->dir, psn_parent->dentnext, entryname);
    478   1.1  pooka 	assert(pd != NULL);
    479   1.1  pooka 	pd->valid = 0;
    480   1.1  pooka 	free(pd->entryname);
    481   1.1  pooka 	pd->entryname = NULL;
    482   1.1  pooka 
    483   1.9  pooka 	if (node->pn_va.va_type == VDIR)
    484   1.1  pooka 		psn->parent->pn_va.va_nlink--;
    485   1.6  pooka 
    486   1.9  pooka 	if (reclaim)
    487   1.9  pooka 		doreclaim(node);
    488   1.1  pooka }
    489