diff options
Diffstat (limited to 'hostmux/leaf.c')
| -rw-r--r-- | hostmux/leaf.c | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/hostmux/leaf.c b/hostmux/leaf.c deleted file mode 100644 index d17a4bce..00000000 --- a/hostmux/leaf.c +++ /dev/null @@ -1,187 +0,0 @@ -/* Hostmux leaf node functions - - Copyright (C) 1997 Free Software Foundation, Inc. - Written by Miles Bader <miles@gnu.ai.mit.edu> - This file is part of the GNU Hurd. - - The GNU Hurd is free software; you can redistribute it and/or - modify it under the terms of the GNU General Public License as - published by the Free Software Foundation; either version 2, or (at - your option) any later version. - - The GNU Hurd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. */ - -#include <string.h> -#include <argz.h> - -#include "hostmux.h" - -/* Read the contents of NODE (a symlink), for USER, into BUF. */ -error_t -netfs_attempt_readlink (struct iouser *user, struct node *node, char *buf) -{ - assert (node->nn->name); - memcpy (buf, node->nn->name->canon, node->nn_stat.st_size); - touch (node, TOUCH_ATIME); - return 0; -} - -/* Append BUF, of length BUF_LEN to *TO, of length *TO_LEN, reallocating and - updating *TO & *TO_LEN appropriately. If an allocation error occurs, - *TO's old value is freed, and *TO is set to 0. */ -static void -str_append (char **to, size_t *to_len, const char *buf, const size_t buf_len) -{ - size_t new_len = *to_len + buf_len; - char *new_to = realloc (*to, new_len + 1); - - if (new_to) - { - memcpy (new_to + *to_len, buf, buf_len); - new_to[new_len] = '\0'; - *to = new_to; - *to_len = new_len; - } - else - { - free (*to); - *to = 0; - } -} - -/* For locked node NODE with S_IPTRANS set in its mode, look up the name of - its translator. Store the name into newly malloced storage, and return it - in *ARGZ; set *ARGZ_LEN to the total length. - - For hostmux, this creates a new translator string by instantiating the - global translator template. */ -error_t -netfs_get_translator (struct node *node, char **argz, size_t *argz_len) -{ - if (! node->nn->name) - return EINVAL; - else - { - error_t err = 0; - char *arg = 0; - int did_replace = 0; - struct hostmux *mux = node->nn->mux; - char *template = mux->trans_template; - size_t template_len = mux->trans_template_len; - char *host_pat = mux->host_pat; - const char *host = node->nn->name->canon; - size_t host_len = strlen (host); - - *argz = 0; /* Initialize return value. */ - *argz_len = 0; - - if (host_pat) - { - size_t host_pat_len = strlen (host_pat); - - while (!err && (arg = argz_next (template, template_len, arg))) - { - char *match = strstr (arg, host_pat); - if (match) - { - char *from = match + host_pat_len; - size_t to_len = match - arg; - char *to = strndup (arg, to_len); - - while (to && from) - { - str_append (&to, &to_len, host, host_len); - if (to) - { - match = strstr (from, host_pat); - if (match) - { - str_append (&to, &to_len, from, match - from); - from = match + host_pat_len; - } - else - { - str_append (&to, &to_len, from, strlen (from)); - from = 0; - } - } - } - - if (to) - { - err = argz_add (argz, argz_len, to); - free (to); - } - else - err = ENOMEM; - - did_replace = 1; - } - else - err = argz_add (argz, argz_len, arg); - } - } - else - err = argz_append (argz, argz_len, template, template_len); - - if (!err && !did_replace) - err = argz_add (argz, argz_len, host); - - if (err && *argz_len > 0) - free (*argz); - - return err; - } -} - -/* Create a new leaf node in MUX, with a name NAME, and return the new node - with a single reference in NODE. */ -error_t -create_host_node (struct hostmux *mux, struct hostmux_name *name, - struct node **node) -{ - struct node *new; - struct netnode *nn = malloc (sizeof (struct netnode)); - - if (! nn) - return ENOMEM; - - nn->mux = mux; - nn->name = name; - - new = netfs_make_node (nn); - if (! new) - { - free (nn); - return ENOMEM; - } - - new->nn_stat = mux->stat_template; - new->nn_stat.st_ino = name->fileno; - - if (strcmp (name->name, name->canon) == 0) - /* The real name of the host, make a real node. */ - { - new->nn_stat.st_mode = (S_IFREG | S_IPTRANS | 0666); - new->nn_stat.st_size = 0; - } - else - /* An alias for this host, make a symlink instead. */ - { - new->nn_stat.st_mode = (S_IFLNK | 0666); - new->nn_stat.st_size = strlen (name->canon); - } - - name->node = new; - - *node = new; - - return 0; -} |