arlad/hpux-subr.c

   1 /*
   2  * Copyright (c) 1995 - 2000 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * 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  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 /* If this isn't defined, we get a constant for DIRSIZ */
  35
  36 #define DIRSIZ_MACRO
  37 #define _INCLUDE_HPUX_SOURCE
  38
  39 #include "arla_local.h"
  40 RCSID("$Id$");
  41
  42 static long blocksize = 1024;   /* XXX */
  43
  44 static void
  45 flushbuf (void *vargs)
  46 {
  47     struct write_dirent_args *args = (struct write_dirent_args *)vargs;
  48     struct dirent *last = (struct dirent *)args->last;
  49     unsigned inc = blocksize - (args->ptr - args->buf);
  50
  51     last->d_reclen += inc;
  52 #if 0
  53     last->d_off    += inc;
  54 #endif
  55     if (write (args->fd, args->buf, blocksize) != blocksize)
  56         arla_warn (ADEBWARN, errno, "write");
  57     args->ptr = args->buf;
  58     args->last = NULL;
  59     memset(args->buf, 0, blocksize);
  60 }
  61
  62 #if 0 /* this seems wrong? */
  63 #define DIRSIZ(dp) \
  64         (((sizeof(struct dirent)+ (strlen((dp)->d_name)+1)) +3) & ~3)
  65 #endif
  66
  67 static int
  68 write_dirent(VenusFid *fid, const char *name, void *arg)
  69 {
  70      struct dirent dirent, *real;
  71      struct write_dirent_args *args = (struct write_dirent_args *)arg;
  72
  73 /*     dirent.d_namlen = strlen (name);*/
  74      dirent.d_reclen = DIRSIZ(&dirent);
  75
  76      if (args->ptr + dirent.d_reclen > args->buf + blocksize)
  77           flushbuf (args);
  78      real = (struct dirent *)args->ptr;
  79
  80 /*     real->d_namlen = dirent.d_namlen;*/
  81      real->d_reclen = dirent.d_reclen;
  82      real->d_ino = dentry2ino (name, fid, args->e);
  83      strlcpy (real->d_name, name, sizeof(real->d_name));
  84      args->ptr += real->d_reclen;
  85      args->off += real->d_reclen;
  86 #if 0
  87      real->d_off = args->off;
  88 #endif
  89      args->last = real;
  90      return 0;
  91 }
  92
  93 int
  94 conv_dir(FCacheEntry *e, CredCacheEntry *ce, u_int tokens)
  95 {
  96     return conv_dir_sub(e, ce, tokens, write_dirent, flushbuf, blocksize);
  97 }
  98 /*
  99  * remove `filename` from the converted directory for `e'
 100  */
 101
 102 int
 103 dir_remove_name(FCacheEntry *e, const char *filename)
 104 {
 105     int ret;
 106     int fd;
 107     fbuf fb;
 108     struct stat sb;
 109     char *buf;
 110     char *p;
 111     size_t len;
 112     struct dirent *dp;
 113     struct dirent *last_dp;
 114
 115     fcache_extra_file_name (e, cache_name, cache_name_sz);
 116     fd = open (cache_name, O_RDWR, 0);
 117     if (fd < 0)
 118         return errno;
 119     fcache_fhget (cache_name, cache_handle);
 120     if (fstat (fd, &sb) < 0) {
 121         ret = errno;
 122         close (fd);
 123         return ret;
 124     }
 125     len = sb.st_size;
 126
 127     ret = fbuf_create (&fb, fd, len, FBUF_READ|FBUF_WRITE);
 128     if (ret) {
 129         close (fd);
 130         return ret;
 131     }
 132     last_dp = NULL;
 133     ret = ENOENT;
 134     for (p = buf = fbuf_buf (&fb); p < buf + len; p += dp->d_reclen) {
 135         dp = (struct dirent *)p;
 136
 137         if (strcmp (filename, dp->d_name) == 0) {
 138             if (last_dp != NULL) {
 139                 struct dirent new_last;
 140
 141                 new_last.d_reclen = last_dp->d_reclen + dp->d_reclen;
 142                 if (new_last.d_reclen >= last_dp->d_reclen)
 143                     last_dp->d_reclen = new_last.d_reclen;
 144             }
 145             dp->d_ino = 0;
 146             ret = 0;
 147             break;
 148         }
 149         last_dp = dp;
 150     }
 151     fbuf_end (&fb);
 152     close (fd);
 153     return ret;
 154 }