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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324
|
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2012 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <sys/stat.h>
#include "mkdir.h"
#include "log.h"
#include "fileio.h"
#include "unit-name.h"
#include "special.h"
#include "path-util.h"
#include "util.h"
#include "strv.h"
static const char *arg_dest = "/tmp";
static char *sysv_translate_name(const char *name) {
char *r;
r = new(char, strlen(name) + sizeof(".service"));
if (!r)
return NULL;
if (endswith(name, ".sh"))
/* Drop .sh suffix */
strcpy(stpcpy(r, name) - 3, ".service");
else
/* Normal init script name */
strcpy(stpcpy(r, name), ".service");
return r;
}
static int sysv_translate_facility(const char *name, const char *filename, char **_r) {
/* We silently ignore the $ prefix here. According to the LSB
* spec it simply indicates whether something is a
* standardized name or a distribution-specific one. Since we
* just follow what already exists and do not introduce new
* uses or names we don't care who introduced a new name. */
static const char * const table[] = {
/* LSB defined facilities */
"local_fs", NULL,
"network", SPECIAL_NETWORK_TARGET,
"named", SPECIAL_NSS_LOOKUP_TARGET,
"portmap", SPECIAL_RPCBIND_TARGET,
"remote_fs", SPECIAL_REMOTE_FS_TARGET,
"syslog", NULL,
"time", SPECIAL_TIME_SYNC_TARGET,
};
unsigned i;
char *r;
const char *n;
assert(name);
assert(_r);
n = *name == '$' ? name + 1 : name;
for (i = 0; i < ELEMENTSOF(table); i += 2) {
if (!streq(table[i], n))
continue;
if (!table[i+1])
return 0;
r = strdup(table[i+1]);
if (!r)
return log_oom();
goto finish;
}
/* If we don't know this name, fallback heuristics to figure
* out whether something is a target or a service alias. */
if (*name == '$') {
if (!unit_prefix_is_valid(n))
return -EINVAL;
/* Facilities starting with $ are most likely targets */
r = unit_name_build(n, NULL, ".target");
} else if (filename && streq(name, filename))
/* Names equaling the file name of the services are redundant */
return 0;
else
/* Everything else we assume to be normal service names */
r = sysv_translate_name(n);
if (!r)
return -ENOMEM;
finish:
*_r = r;
return 1;
}
static int parse_insserv_conf(const char* filename) {
_cleanup_fclose_ FILE *f = NULL;
int r;
if (!(f = fopen(filename, "re"))) {
log_debug("Failed to open file %s", filename);
r = errno == ENOENT ? 0 : -errno;
return r;
}
while (!feof(f)) {
char l[LINE_MAX], *t;
_cleanup_strv_free_ char **parsed = NULL;
if (!fgets(l, sizeof(l), f)) {
if (feof(f))
break;
r = -errno;
log_error("Failed to read configuration file '%s': %s", filename, strerror(-r));
return -r;
}
t = strstrip(l);
if (*t != '$' && *t != '<')
continue;
parsed = strv_split(t,WHITESPACE);
/* we ignore <interactive>, not used, equivalent to X-Interactive */
if (parsed && !startswith_no_case (parsed[0], "<interactive>")) {
_cleanup_free_ char *facility = NULL;
if (sysv_translate_facility(parsed[0], NULL, &facility) < 0 || !facility)
continue;
if (streq(facility, SPECIAL_REMOTE_FS_TARGET)) {
_cleanup_free_ char *unit = NULL;
/* insert also a Wants dependency from remote-fs-pre on remote-fs */
unit = strjoin(arg_dest, "/remote-fs.target.d/50-",basename(filename),".conf", NULL);
if (!unit)
return log_oom();
mkdir_parents_label(unit, 0755);
r = write_string_file(unit,
"# Automatically generated by systemd-insserv-generator\n\n"
"[Unit]\n"
"Wants=remote-fs-pre.target\n");
if (r)
return r;
free (facility);
facility=strdup(SPECIAL_REMOTE_FS_PRE_TARGET);
}
if (facility && endswith(facility, ".target")) {
char *name, **j;
FILE *file = NULL;
STRV_FOREACH (j, parsed+1) {
_cleanup_free_ char *unit = NULL;
_cleanup_free_ char *dep = NULL;
_cleanup_free_ char *initscript = NULL;
/* targets should not pull in and activate other targets so skip them */
if (*j[0] == '$')
continue;
if (*j[0] == '+')
name = *j+1;
else
name = *j;
if ((sysv_translate_facility(name, NULL, &dep) < 0) || !dep)
continue;
/* don't create any drop-in configs if the
* corresponding SysV init script does not exist */
initscript = strjoin("/etc/init.d/", name, NULL);
if (access(initscript, F_OK) < 0) {
_cleanup_free_ char *initscript_sh = NULL;
/* Try *.sh source'able init scripts */
initscript_sh = strjoin(initscript, ".sh", NULL);
if (access(initscript_sh, F_OK) < 0) {
continue;
}
}
unit = strjoin(arg_dest, "/", dep, ".d/50-",basename(filename),"-",parsed[0],".conf", NULL);
if (!unit)
return log_oom();
mkdir_parents_label(unit, 0755);
file = fopen(unit, "wxe");
if (!file) {
if (errno == EEXIST)
log_error("Failed to create drop-in file %s", unit);
else
log_error("Failed to create drop-in file %s: %m", unit);
return -errno;
}
fprintf(file,
"# Automatically generated by systemd-insserv-generator\n\n"
"[Unit]\n"
"Wants=%s\n"
"Before=%s\n",
facility, facility);
fflush(file);
if (ferror(file)) {
log_error("Failed to write unit file %s: %m", unit);
return -errno;
}
fclose(file);
if (*j[0] != '+') {
free (unit);
unit = strjoin(arg_dest, "/", facility, ".d/50-hard-dependency-",basename(filename),"-",parsed[0],".conf", NULL);
if (!unit)
return log_oom();
mkdir_parents_label(unit, 0755);
file = fopen(unit, "wxe");
if (!file) {
if (errno == EEXIST)
log_error("Failed to create drop-in file %s, as it already exists", unit);
else
log_error("Failed to create drop-in file %s: %m", unit);
return -errno;
}
fprintf(file,
"# Automatically generated by systemd-insserv-generator\n\n"
"[Unit]\n"
"SourcePath=%s\n"
"Requires=%s\n",
filename, dep);
fflush(file);
if (ferror(file)) {
log_error("Failed to write unit file %s: %m", unit);
return -errno;
}
fclose(file);
}
}
}
}
}
return r;
}
static int parse_insserv(void) {
DIR *d = NULL;
struct dirent *de;
int r = 0;
if (!(d = opendir("/etc/insserv.conf.d/"))) {
if (errno != ENOENT) {
log_debug("opendir() failed on /etc/insserv.conf.d/ %s", strerror(errno));
}
} else {
while ((de = readdir(d))) {
char *path = NULL;
if (ignore_file(de->d_name))
continue;
path = strjoin("/etc/insserv.conf.d/", de->d_name, NULL);
parse_insserv_conf(path);
free(path);
}
closedir (d);
}
r = parse_insserv_conf("/etc/insserv.conf");
return r;
}
int main(int argc, char *argv[]) {
int r = 0;
if (argc > 1 && argc != 4) {
log_error("This program takes three or no arguments.");
return EXIT_FAILURE;
}
if (argc > 1)
arg_dest = argv[1];
log_set_target(LOG_TARGET_SAFE);
log_parse_environment();
log_open();
umask(0022);
r = parse_insserv();
return (r < 0) ? EXIT_FAILURE : EXIT_SUCCESS;
}
|