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
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
/* Hurd unionfs
Copyright (C) 2001, 2002, 2005 Free Software Foundation, Inc.
Written by Gianluca Guida <glguida@gmail.com>.
This program 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 of the
License, or * (at your option) any later version.
This program 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 02111-1307
USA. */
/* Stow mode for unionfs. */
#define _GNU_SOURCE
#include <argp.h>
#include <error.h>
#include "ulfs.h"
#include "lib.h"
#include "pattern.h"
struct stow_privdata
{
struct patternlist *patternlist;
int flags;
int remove;
};
static error_t
_stow_registermatchingdirs (char *arg, char *dirpath, void *priv)
{
error_t err=0;
char *filepath;
struct stow_privdata *privdata = (struct stow_privdata *) priv ;
err = patternlist_match (privdata->patternlist, arg);
if (err)
return err;
filepath = make_filepath (dirpath, arg);
debug_msg_send ("adding %s\n", filepath);
if (privdata->remove)
{
err = ulfs_unregister (filepath);
if (err == ENOENT)
/* It is not a fatal error, when the user tries to remove
a filesystem, which is not used by unionfs. */
err = 0;
}
else
err = ulfs_register (filepath, privdata->flags);
if (err)
error (EXIT_FAILURE, err, "ulfs_register");
free (filepath);
return 0;
}
static error_t
_stow_scanstowentry (char *arg, char *dirpath, void *priv)
{
char *filepath = dirpath;
error_t err;
struct stow_privdata *privdata = (struct stow_privdata *) priv ;
if (dirpath)
{
char *tmp;
tmp = make_filepath (dirpath, arg);
filepath = make_filepath (tmp, "/");
free (tmp);
}
if (patternlist_isempty (privdata->patternlist))
{
if (privdata->remove)
{
err = ulfs_unregister (filepath);
if (err == ENOENT)
/* It is not a fatal error, when the user tries to remove
a filesystem, which is not used by unionfs. */
err = 0;
}
else
err = ulfs_register (filepath, privdata->flags);
if (err)
error (EXIT_FAILURE, err, "ulfs_register");
}
else
{
err = for_each_subdir_priv (filepath, _stow_registermatchingdirs, priv);
}
free (filepath);
return err;
}
error_t
stow_diradd (char *dir, int flags, struct patternlist *patternlist, int remove)
{
error_t err;
struct stow_privdata mypriv =
{
.patternlist = patternlist,
.flags = flags,
.remove = remove
};
int dir_len;
dir_len = strlen(dir);
if (dir_len == 0)
{
error (EXIT_FAILURE, ARGP_ERR_UNKNOWN, "stow_diradd");
}
if (dir[dir_len - 1 ] != '/')
{
char *tmp;
tmp = (char *) malloc (dir_len + 1);
if (tmp == NULL)
error (EXIT_FAILURE, ENOMEM, "stow_diradd");
strncpy (tmp, dir, dir_len);
tmp[dir_len] = '/';
dir = tmp;
}
err = for_each_subdir_priv (dir, _stow_scanstowentry, (void *)&mypriv);
return err;
}
|
