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Add support or FSEntry_Func 14 and FSEntry_Func 15, which seem to be the 

important directory-listing entry points.
This commit is contained in:
bjh21 2006-07-02 22:06:16 +00:00
parent 1b0f046ee7
commit 32bed2b7b7
1 changed files with 154 additions and 11 deletions
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165
sys/arch/acorn32/stand/nbfs/nbfs.c
View File

@ -1,8 +1,9 @@
/* $NetBSD: nbfs.c,v 1.3 2006/04/06 21:39:16 bjh21 Exp $ */
/* $NetBSD: nbfs.c,v 1.4 2006/07/02 22:06:16 bjh21 Exp $ */
/*-
* Copyright (c) 2006 Ben Harris
* All rights reserved.
* Copyright (c) 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@ -12,9 +13,36 @@
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Copyright (c) 1996
* Matthias Drochner. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
@ -27,20 +55,24 @@
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/disklabel.h>
#include <sys/queue.h>
#include <ufs/ufs/dinode.h>
#include <ufs/ufs/dir.h>
#include <lib/libkern/libkern.h>
#include <lib/libsa/stand.h>
#include <lib/libsa/lfs.h>
#include <lib/libsa/ufs.h>
#include <riscoscalls.h>
#include <riscosdisk.h>
#include "nbfs.h"
struct fs_ops file_system[] = { FS_OPS(ffsv1), FS_OPS(ffsv2) };
struct fs_ops file_system[] = {
FS_OPS(ffsv1), FS_OPS(ffsv2), FS_OPS(lfsv1), FS_OPS(lfsv2)
};
int nfsys = __arraycount(file_system);
@ -257,14 +289,125 @@ fail:
return &error;
}
static int
nbfs_filename_ok(char const *f)
{
while (*f)
if (strchr(":*#$&@^%\\", *f++) != NULL)
return 0;
return 1;
}
static os_error *
nbfs_func_dirents(struct nbfs_reg *r)
{
static os_error error = {0, "nbfs_func_dirents"};
int reason = r->r0;
char const *fname = (char const *)r->r1;
char const *special = (char const *)r->r6;
struct open_file f;
struct stat st;
int err;
struct fileswitch_dirent *fdp;
size_t resid;
size_t maxcount = r->r3;
size_t count = 0;
size_t skip = r->r4;
ssize_t off = 0;
size_t buflen = r->r5;
char dirbuf[DIRBLKSIZ];
char *outp = (char *)r->r2;
err = nbfs_fopen(&f, special, fname);
if (err != 0)
return &error;
err = FS_STAT(f.f_ops)(&f, &st);
if (err != 0)
goto fail;
if (!S_ISDIR(st.st_mode))
goto fail;
while (FS_READ(f.f_ops)(&f, dirbuf, DIRBLKSIZ, &resid) == 0 &&
resid == 0) {
struct direct *dp, *edp;
dp = (struct direct *) dirbuf;
edp = (struct direct *) (dirbuf + DIRBLKSIZ);
for (; dp < edp; dp = (void *)((char *)dp + dp->d_reclen)) {
size_t entsiz = 0;
int i;
if (dp->d_ino == 0)
continue;
/*
* Skip ., .., and names with characters that RISC
* OS doesn't allow.
*/
if (strcmp(dp->d_name, ".") == 0 ||
strcmp(dp->d_name, "..") == 0 ||
!nbfs_filename_ok(dp->d_name))
continue;
if (off++ < skip)
continue;
switch (reason) {
case 14:
entsiz = strlen(dp->d_name) + 1;
if (buflen < entsiz) goto out;
strcpy(outp, dp->d_name);
break;
case 15:
entsiz = ALIGN(offsetof(
struct fileswitch_dirent, name)
+ strlen(dp->d_name) + 1);
if (buflen < entsiz) goto out;
fdp = (struct fileswitch_dirent *)outp;
fdp->loadaddr = 0;
fdp->execaddr = 0;
fdp->length = 0;
fdp->attr = 0;
fdp->objtype = dp->d_type == DT_DIR ?
fileswitch_IS_DIR : fileswitch_IS_FILE;
strcpy(fdp->name, dp->d_name);
for (i = 0; fdp->name[i] != '\0'; i++)
if (fdp->name[i] == '.')
fdp->name[i] = '/';
break;
}
outp += entsiz;
buflen -= entsiz;
if (++count == maxcount)
goto out;
}
}
off = -1;
out:
nbfs_fclose(&f);
r->r3 = count;
r->r4 = off;
return NULL;
fail:
nbfs_fclose(&f);
return &error;
}
os_error *
nbfs_func(struct nbfs_reg *r)
{
static os_error err = {0, "nbfs_func"};
static os_error error = {0, "nbfs_func"};
int reason = r->r0;
/* We do nothing on shutdown */
if (reason == 16) return NULL;
switch (reason) {
case 14:
case 15:
return nbfs_func_dirents(r);
return &err;
case 16: /* Shut down */
return NULL;
default:
sprintf(error.errmess, "nbfs_func %d not implemented", reason);
return &error;
}
}