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
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
/* Set a file's translator.
Copyright (C) 1995 Free Software Foundation, Inc.
Written by Miles Bader <miles@gnu.ai.mit.edu>
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, 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <hurd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include <fcntl.h>
#include <unistd.h>
#include <error.h>
#include <argz.h>
#include <start-trans.h>
/* ---------------------------------------------------------------- */
#define USAGE "Usage: %s [OPTION...] FILE [TRANSLATOR...]\n"
static void
usage(status)
int status;
{
if (status != 0)
fprintf(stderr, "Try `%s --help' for more information.\n",
program_invocation_name);
else
{
printf(USAGE, program_invocation_name);
printf("\
\n\
-a, --active Set FILE's active translator\n\
-p, --passive Set FILE's passive translator\n\
-c, --create Create FILE if it doesn't exist\n\
-f, --force Set the translator even if one already exists\n\
-k, --keep-active Keep any currently running active translator\n\
when setting the passive translator\n\
-L, --dereference If a translator exists, put the new one on top\n\
-t, --list Show FILE's passive translator\n\
--help Give this help list\n\
");
}
exit(status);
}
#define SHORT_OPTIONS "apcfkLt?"
static struct option options[] =
{
{"active", no_argument, 0, 'a'},
{"passive", no_argument, 0, 'p'},
{"keep-active", no_argument, 0, 'k'},
{"create", no_argument, 0, 'c'},
{"force", no_argument, 0, 'f'},
{"dereference", no_argument, 0, 'L'},
{"list", no_argument, 0, 't'},
{"help", no_argument, 0, '?'},
{0, 0, 0, 0}
};
/* ---------------------------------------------------------------- */
void
main(int argc, char *argv[])
{
int opt;
error_t err;
/* The filesystem node we're putting a translator on. */
char *node_name;
file_t node;
/* The translator's arg vector, in '\0' separated format. */
char *argz = 0;
int argz_len = 0;
/* The control port for any active translator we start up. */
fsys_t active_control = MACH_PORT_NULL;
/* Flags to pass to file_set_translator. By default we only set a
translator if there's no existing one. */
int flags = FS_TRANS_SET | FS_TRANS_EXCL;
/* Various option flags. */
int passive = 0, active = 0, create = 0, force = 0, deref = 0, list = 0;
int keep_active = 0;
/* Parse our options... */
while ((opt = getopt_long(argc, argv, "+" SHORT_OPTIONS, options, 0)) != EOF)
switch (opt)
{
case 'a': active = 1; break;
case 'p': passive = 1; break;
case 'f': force = 1; break;
case 'k': keep_active = 1; break;
case 'c': create = 1; break;
case 'L': deref = 1; break;
case 't': list = 1; break;
case '?': usage(0);
default: usage(1);
}
if (optind == argc)
{
fprintf(stderr,
"%s: Missing filename argument\n", program_invocation_name);
usage(1);
}
node_name = argv[optind++];
if (!active && !passive)
passive = 1;
node =
file_name_lookup(node_name,
(deref ? 0 : O_NOTRANS) | (create ? O_CREAT : 0),
0666);
if (node == MACH_PORT_NULL)
error(1, errno, "%s", node_name);
if (list)
/* Print out NODE's translator instead of setting it. */
{
char buf[1024], *trans = buf;
int len = sizeof(buf);
err = file_get_translator(node, &trans, &len);
if (err)
error(2, err, "%s", node_name);
argz_stringify(trans, len);
printf("%s\n", trans);
}
else
{
err = argz_create(argv + optind, &argz, &argz_len);
if (err)
error(3, err, "Can't create argz vector");
if (active && argz_len > 0)
err = start_translator(node, argz, argz_len, 60000, &active_control);
if (err)
error(4, err, "%s", argz);
if (force)
/* Kill any existing translators. */
flags &= ~FS_TRANS_EXCL;
err =
file_set_translator(node,
passive ? flags : 0,
(active || !keep_active) ? flags : 0,
0,
argz, argz_len,
active_control, MACH_MSG_TYPE_MOVE_SEND);
if (err)
error(5, err, "%s", node_name);
}
exit(0);
}
|
