1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
/* General fs 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 <fcntl.h>
#include <string.h>
#include <hurd/ihash.h>
#include <hurd/fshelp.h>
#include <hurd/iohelp.h>
#include <hurd/netfs.h>
#include "ftpfs.h"
#include "ccache.h"
/* Node maintenance. */
/* Return a new node in NODE, with a name NAME, and return the new node
with a single reference in NODE. E may be 0, if this is the root node. */
error_t
ftpfs_create_node (struct ftpfs_dir_entry *e, const char *rmt_path,
struct node **node)
{
struct node *new;
struct netnode *nn = malloc (sizeof (struct netnode));
if (! nn)
return ENOMEM;
nn->fs = e->dir->fs;
nn->dir_entry = e;
nn->contents = 0;
nn->dir = 0;
nn->rmt_path = strdup (rmt_path);
nn->ncache_next = nn->ncache_prev = 0;
new = netfs_make_node (nn);
if (! new)
{
free (nn);
return ENOMEM;
}
fshelp_touch (&new->nn_stat, TOUCH_ATIME|TOUCH_MTIME|TOUCH_CTIME,
ftpfs_maptime);
spin_lock (&nn->fs->inode_mappings_lock);
ihash_add (nn->fs->inode_mappings, e->stat.st_ino, new, &e->inode_locp);
spin_unlock (&nn->fs->inode_mappings_lock);
e->node = new;
*node = new;
return 0;
}
/* Node NP is all done; free all its associated storage. */
void
netfs_node_norefs (struct node *node)
{
struct netnode *nn = node->nn;
/* Ftpfs_detach_node does ref count frobbing (of other nodes), so we have
to unlock NETFS_NODE_REFCNT_LOCK during it. */
node->references++;
spin_unlock (&netfs_node_refcnt_lock);
/* Remove NODE from any entry it is attached to. */
ftpfs_detach_node (node);
if (nn->dir)
{
assert (nn->dir->num_live_entries == 0);
ftpfs_dir_free (nn->dir);
}
/* Remove this entry from the set of known inodes. */
spin_lock (&nn->fs->inode_mappings_lock);
ihash_locp_remove (nn->fs->inode_mappings, nn->dir_entry->inode_locp);
spin_unlock (&nn->fs->inode_mappings_lock);
if (nn->contents)
ccache_free (nn->contents);
free (nn);
free (node);
/* Caller expects us to leave this locked... */
spin_lock (&netfs_node_refcnt_lock);
}
|
