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
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
|
/* GNU Guix --- Functional package management for GNU
Copyright (C) 2012, 2013 Ludovic Courtès <ludo@gnu.org>
This file is part of GNU Guix.
GNU Guix 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 3 of the License, or (at
your option) any later version.
GNU Guix 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 GNU Guix. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#include <types.hh>
#include "shared.hh"
#include <globals.hh>
#include <util.hh>
#include <gcrypt.h>
#include <stdlib.h>
#include <argp.h>
#include <unistd.h>
#include <sys/types.h>
#include <exception>
/* Variables used by `nix-daemon.cc'. */
volatile ::sig_atomic_t blockInt;
char **argvSaved;
using namespace nix;
/* Entry point in `nix-daemon.cc'. */
extern void run (Strings args);
/* Command-line options. */
const char *argp_program_version =
"guix-daemon (" PACKAGE_NAME ") " PACKAGE_VERSION;
const char *argp_program_bug_address = PACKAGE_BUGREPORT;
static char doc[] =
"guix-daemon -- perform derivation builds and store accesses\
\v\
This program is a daemon meant to run in the background. It serves \
requests sent over a Unix-domain socket. It accesses the store, and \
builds derivations on behalf of its clients.";
#define GUIX_OPT_SYSTEM 1
#define GUIX_OPT_DISABLE_CHROOT 2
#define GUIX_OPT_BUILD_USERS_GROUP 3
#define GUIX_OPT_CACHE_FAILURES 4
#define GUIX_OPT_LOSE_LOGS 5
#define GUIX_OPT_DISABLE_LOG_COMPRESSION 6
#define GUIX_OPT_DISABLE_STORE_OPTIMIZATION 7
#define GUIX_OPT_IMPERSONATE_LINUX_26 8
#define GUIX_OPT_DEBUG 9
#define GUIX_OPT_CHROOT_DIR 10
#define GUIX_OPT_LISTEN 11
#define GUIX_OPT_NO_SUBSTITUTES 12
static const struct argp_option options[] =
{
{ "system", GUIX_OPT_SYSTEM, "SYSTEM", 0,
"Assume SYSTEM as the current system type" },
{ "cores", 'c', "N", 0,
"Use N CPU cores to build each derivation; 0 means as many as available" },
{ "max-jobs", 'M', "N", 0,
"Allow at most N build jobs" },
{ "disable-chroot", GUIX_OPT_DISABLE_CHROOT, 0, 0,
"Disable chroot builds"
#ifndef HAVE_CHROOT
" (chroots are not supported in this configuration, so "
"this option has no effect)"
#endif
},
{ "chroot-directory", GUIX_OPT_CHROOT_DIR, "DIR", 0,
"Add DIR to the build chroot"
#ifndef HAVE_CHROOT
" (chroots are not supported in this configuration, so "
"this option has no effect)"
#endif
},
{ "build-users-group", GUIX_OPT_BUILD_USERS_GROUP, "GROUP", 0,
"Perform builds as a user of GROUP" },
{ "no-substitutes", GUIX_OPT_NO_SUBSTITUTES, 0, 0,
"Do not use substitutes" },
{ "cache-failures", GUIX_OPT_CACHE_FAILURES, 0, 0,
"Cache build failures" },
{ "lose-logs", GUIX_OPT_LOSE_LOGS, 0, 0,
"Do not keep build logs" },
{ "disable-log-compression", GUIX_OPT_DISABLE_LOG_COMPRESSION, 0, 0,
"Disable compression of the build logs" },
{ "disable-store-optimization", GUIX_OPT_DISABLE_STORE_OPTIMIZATION, 0, 0,
"Disable automatic file \"deduplication\" in the store" },
{ "impersonate-linux-2.6", GUIX_OPT_IMPERSONATE_LINUX_26, 0, 0,
"Impersonate Linux 2.6"
#ifndef HAVE_SYS_PERSONALITY_H
" (this option has no effect in this configuration)"
#endif
},
{ "listen", GUIX_OPT_LISTEN, "SOCKET", 0,
"Listen for connections on SOCKET" },
{ "debug", GUIX_OPT_DEBUG, 0, 0,
"Produce debugging output" },
{ 0, 0, 0, 0, 0 }
};
/* Parse a single option. */
static error_t
parse_opt (int key, char *arg, struct argp_state *state)
{
switch (key)
{
case GUIX_OPT_DISABLE_CHROOT:
settings.useChroot = false;
break;
case GUIX_OPT_CHROOT_DIR:
settings.dirsInChroot.insert (arg);
break;
case GUIX_OPT_DISABLE_LOG_COMPRESSION:
settings.compressLog = false;
break;
case GUIX_OPT_BUILD_USERS_GROUP:
settings.buildUsersGroup = arg;
break;
case GUIX_OPT_DISABLE_STORE_OPTIMIZATION:
settings.autoOptimiseStore = false;
break;
case GUIX_OPT_CACHE_FAILURES:
settings.cacheFailure = true;
break;
case GUIX_OPT_IMPERSONATE_LINUX_26:
settings.impersonateLinux26 = true;
break;
case GUIX_OPT_LOSE_LOGS:
settings.keepLog = false;
break;
case GUIX_OPT_LISTEN:
try
{
settings.nixDaemonSocketFile = canonPath (arg);
}
catch (std::exception &e)
{
fprintf (stderr, "error: %s\n", e.what ());
exit (EXIT_FAILURE);
}
break;
case GUIX_OPT_NO_SUBSTITUTES:
settings.useSubstitutes = false;
break;
case GUIX_OPT_DEBUG:
verbosity = lvlDebug;
break;
case 'c':
settings.buildCores = atoi (arg);
break;
case 'M':
settings.maxBuildJobs = atoi (arg);
break;
case GUIX_OPT_SYSTEM:
settings.thisSystem = arg;
break;
default:
return ARGP_ERR_UNKNOWN;
}
return 0;
}
/* Argument parsing. */
static struct argp argp = { options, parse_opt, 0, doc };
int
main (int argc, char *argv[])
{
Strings nothing;
/* Initialize libgcrypt. */
if (!gcry_check_version (GCRYPT_VERSION))
{
fprintf (stderr, "error: libgcrypt version mismatch\n");
exit (EXIT_FAILURE);
}
#ifdef HAVE_CHROOT
settings.useChroot = true;
#else
settings.useChroot = false;
#endif
argvSaved = argv;
try
{
settings.processEnvironment ();
/* Use our substituter by default. */
settings.substituters.clear ();
settings.useSubstitutes = true;
argp_parse (&argp, argc, argv, 0, 0, 0);
if (settings.useSubstitutes)
{
string subs = getEnv ("NIX_SUBSTITUTERS", "default");
if (subs == "default")
settings.substituters.push_back (settings.nixLibexecDir
+ "/guix/substitute-binary");
else
settings.substituters = tokenizeString<Strings> (subs, ":");
}
if (geteuid () == 0 && settings.buildUsersGroup.empty ())
fprintf (stderr, "warning: daemon is running as root, so "
"using `--build-users-group' is highly recommended\n");
#ifdef HAVE_CHROOT
if (settings.useChroot)
{
foreach (PathSet::iterator, i, settings.dirsInChroot)
{
printMsg (lvlDebug,
format ("directory `%1%' added to the chroot") % *i);
}
}
#endif
printMsg (lvlDebug,
format ("listening on `%1%'") % settings.nixDaemonSocketFile);
run (nothing);
}
catch (std::exception &e)
{
fprintf (stderr, "error: %s\n", e.what ());
return EXIT_FAILURE;
}
return EXIT_SUCCESS; /* never reached */
}
|
