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https://github.com/troglobit/finit.git
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Relocate source files to an src/ subdirectory
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This commit is contained in:
Joachim Nilsson committed
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61 files changed
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+527
@@ -0,0 +1,527 @@
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/* Parser for /etc/finit.conf and /etc/finit.d/<SVC>.conf
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*
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* Copyright (c) 2012-2015 Joachim Nilsson <troglobit@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "config.h" /* Generated by configure script */
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#include <dirent.h>
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#include <string.h>
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#include <sys/resource.h>
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#include <lite/lite.h>
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#include <sys/time.h>
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#include "finit.h"
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#include "cond.h"
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#include "service.h"
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#include "tty.h"
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#include "helpers.h"
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#define MATCH_CMD(l, c, x) \
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(!strncasecmp(l, c, strlen(c)) && (x = (l) + strlen(c)))
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static int parse_conf(char *file);
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void conf_parse_cmdline(void)
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{
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FILE *fp;
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char line[LINE_SIZE];
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fp = fopen("/proc/cmdline", "r");
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if (fp) {
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fgets(line, sizeof(line), fp);
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_d("Kernel command line: %s", line);
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if (strstr(line, "finit_debug") || strstr(line, "--debug"))
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debug = 1;
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if (!debug && strstr(line, "quiet"))
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quiet = 1;
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fclose(fp);
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}
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}
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/* Convert optional "[!123456789S]" string into a bitmask */
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int conf_parse_runlevels(char *runlevels)
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{
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int i, not = 0, bitmask = 0;
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if (!runlevels)
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runlevels = "[234]";
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i = 1;
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while (i) {
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int level;
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char lvl = runlevels[i++];
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if (']' == lvl || 0 == lvl)
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break;
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if ('!' == lvl) {
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not = 1;
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bitmask = 0x3FE;
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continue;
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}
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if ('s' == lvl || 'S' == lvl)
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lvl = '0';
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level = lvl - '0';
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if (level > 9 || level < 0)
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continue;
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if (not)
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CLRBIT(bitmask, level);
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else
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SETBIT(bitmask, level);
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}
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return bitmask;
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}
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void conf_parse_cond(svc_t *svc, char *cond)
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{
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size_t i = 0;
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char *ptr;
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if (!svc) {
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_e("Invalid service pointer");
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return;
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}
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/* By default we assume UNIX daemons support SIGHUP */
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if (svc_is_daemon(svc))
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svc->sighup = 1;
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if (!cond)
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return;
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/* First character must be '!' if SIGHUP is not supported. */
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ptr = cond;
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if (ptr[i] == '!') {
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svc->sighup = 0;
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ptr++;
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}
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while (ptr[i] != '>' && ptr[i] != 0)
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i++;
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ptr[i] = 0;
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if (i >= sizeof(svc->cond)) {
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logit(LOG_WARNING, "Too long event list in declaration of %s: %s", svc->cmd, ptr);
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return;
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}
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strlcpy(svc->cond, ptr, sizeof(svc->cond));
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}
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struct rlimit_name {
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char *name;
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int val;
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};
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static const struct rlimit_name rlimit_names[] = {
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{ "as", RLIMIT_AS },
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{ "core", RLIMIT_CORE },
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{ "cpu", RLIMIT_CPU },
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{ "data", RLIMIT_DATA },
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{ "fsize", RLIMIT_FSIZE },
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{ "locks", RLIMIT_LOCKS },
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{ "memlock", RLIMIT_MEMLOCK },
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{ "msgqueue", RLIMIT_MSGQUEUE },
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{ "nice", RLIMIT_NICE },
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{ "nofile", RLIMIT_NOFILE },
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{ "nproc", RLIMIT_NPROC },
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{ "rss", RLIMIT_RSS },
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{ "rtprio", RLIMIT_RTPRIO },
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#ifdef RLIMIT_RTTIME
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{ "rttime", RLIMIT_RTTIME },
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#endif
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{ "sigpending", RLIMIT_SIGPENDING },
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{ "stack", RLIMIT_STACK },
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{ NULL, 0 }
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};
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void conf_parse_rlimit(char *line)
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{
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struct rlimit rlim;
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rlim_t new, *set;
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const struct rlimit_name *name;
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int resource = -1;
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char *tok = strtok(line, " \t");
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if (tok && !strcmp(tok, "soft"))
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set = &rlim.rlim_cur;
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else if (tok && !strcmp(tok, "hard"))
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set = &rlim.rlim_max;
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else
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goto error;
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tok = strtok(NULL, " \t");
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if (!tok)
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goto error;
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for (name = rlimit_names; name->name; name++) {
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if (!strcmp(tok, name->name))
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resource = name->val;
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}
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if (resource < 0)
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goto fail;
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tok = strtok(NULL, " \t");
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if (!tok)
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goto fail;
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if (!strcmp(tok, "infinity")) {
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new = RLIM_INFINITY;
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} else {
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const char *err = NULL;
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new = strtonum(tok, 0, (long long)2 << 31, &err);
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if (err)
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goto fail;
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}
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if (getrlimit(resource, &rlim))
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goto fail;
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*set = new;
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if (setrlimit(resource, &rlim))
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goto fail;
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return;
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fail:
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logit(LOG_WARNING, "rlimit: Failed setting rlimit %s", name->name ? : "unknown");
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return;
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error:
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logit(LOG_WARNING, "rlimit: parse error");
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}
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static void parse_static(char *line)
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{
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char *x;
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char cmd[CMD_SIZE];
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/* Do this before mounting / read-write
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* XXX: Move to plugin which checks /etc/fstab instead */
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if (MATCH_CMD(line, "check ", x)) {
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char *dev = strip_line(x);
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strcpy(cmd, "/sbin/fsck -C -a ");
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strlcat(cmd, dev, sizeof(cmd));
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run_interactive(cmd, "Checking file system %s", dev);
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return;
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}
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if (MATCH_CMD(line, "user ", x)) {
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if (username) free(username);
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username = strdup(strip_line(x));
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return;
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}
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if (MATCH_CMD(line, "host ", x)) {
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if (hostname) free(hostname);
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hostname = strdup(strip_line(x));
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return;
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}
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if (MATCH_CMD(line, "module ", x)) {
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char *mod = strip_line(x);
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strcpy(cmd, "/sbin/modprobe ");
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strlcat(cmd, mod, sizeof(cmd));
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run_interactive(cmd, "Loading kernel module %s", mod);
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return;
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}
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if (MATCH_CMD(line, "mknod ", x)) {
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char *dev = strip_line(x);
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strcpy(cmd, "/bin/mknod ");
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strlcat(cmd, dev, sizeof(cmd));
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run_interactive(cmd, "Creating device node %s", dev);
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return;
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}
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if (MATCH_CMD(line, "network ", x)) {
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if (network) free(network);
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network = strdup(strip_line(x));
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return;
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}
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if (MATCH_CMD(line, "runparts ", x)) {
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if (runparts) free(runparts);
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runparts = strdup(strip_line(x));
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return;
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}
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if (MATCH_CMD(line, "include ", x)) {
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char *file = strip_line(x);
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strlcpy(cmd, file, sizeof(cmd));
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if (!fexist(cmd)) {
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_e("Cannot find include file %s, absolute path required!", x);
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return;
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}
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parse_conf(cmd);
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return;
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}
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if (MATCH_CMD(line, "startx ", x)) {
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service_register(SVC_TYPE_SERVICE, strip_line(x), NULL, username);
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return;
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}
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if (MATCH_CMD(line, "shutdown ", x)) {
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if (sdown) free(sdown);
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sdown = strdup(strip_line(x));
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return;
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}
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/* The desired runlevel to start when leaving bootstrap (S).
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* Finit supports 1-9, but most systems only use 1-6, where
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* 6 is reserved for reboot */
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if (MATCH_CMD(line, "runlevel ", x)) {
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char *token = strip_line(x);
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const char *err = NULL;
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cfglevel = strtonum(token, 1, 9, &err);
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if (err)
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cfglevel = RUNLEVEL;
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if (cfglevel < 1 || cfglevel > 9 || cfglevel == 6)
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cfglevel = 2; /* Fallback */
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return;
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}
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/* TODO: Make console & tty dynamically loadable from /etc/finit.d */
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if (MATCH_CMD(line, "console ", x)) {
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if (console) free(console);
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console = strdup(strip_line(x));
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return;
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}
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/* TODO: Make console & tty dynamically loadable from /etc/finit.d */
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if (MATCH_CMD(line, "tty ", x)) {
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tty_register(strip_line(x));
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return;
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}
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}
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static void parse_dynamic(char *line, struct timeval *mtime)
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{
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char *x;
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/* Skip comments, i.e. lines beginning with # */
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if (MATCH_CMD(line, "#", x))
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return;
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/* Monitored daemon, will be respawned on exit */
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if (MATCH_CMD(line, "service ", x)) {
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service_register(SVC_TYPE_SERVICE, x, mtime, NULL);
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return;
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}
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/* One-shot task, will not be respawned */
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if (MATCH_CMD(line, "task ", x)) {
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service_register(SVC_TYPE_TASK, x, mtime, NULL);
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return;
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}
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/* Like task but waits for completion, useful w/ [S] */
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if (MATCH_CMD(line, "run ", x)) {
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service_register(SVC_TYPE_RUN, x, mtime, NULL);
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return;
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}
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/* Classic inetd service */
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if (MATCH_CMD(line, "inetd ", x)) {
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#ifdef INETD_ENABLED
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service_register(SVC_TYPE_INETD, x, mtime, NULL);
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#else
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_e("Finit built with inetd support disabled, cannot register service inetd %s!", x);
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#endif
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return;
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}
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if (MATCH_CMD(line, "rlimit ", x)) {
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conf_parse_rlimit(x);
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return;
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}
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}
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static void tabstospaces(char *line)
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{
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if (!line)
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return;
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for (int i = 0; line[i]; i++) {
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if (line[i] == '\t')
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line[i] = ' ';
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}
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}
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static int parse_conf_dynamic(char *file, struct timeval *mtime)
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{
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FILE *fp = fopen(file, "r");
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if (!fp) {
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_pe("Failed opening %s", file);
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return 1;
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}
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while (!feof(fp)) {
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char line[LINE_SIZE] = "";
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if (!fgets(line, sizeof(line), fp))
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continue;
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chomp(line);
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tabstospaces(line);
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_d("dyn conf: %s", line);
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parse_dynamic(line, mtime);
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}
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fclose(fp);
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return 0;
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}
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static int parse_conf(char *file)
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{
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FILE *fp;
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char line[LINE_SIZE] = "";
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char *x;
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fp = fopen(file, "r");
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if (!fp)
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return 1;
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/*
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* If not standard finit.conf, then we want to show just the base name
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* Loading configuration ............. vs
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* Loading services configuration ....
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*/
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if (!string_match (file, FINIT_CONF)) {
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/* Remove leading path */
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x = strrchr(file, '/');
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if (!x) x = file;
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else x++;
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/* Remove ending .conf */
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strlcpy(line, x, sizeof(line));
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x = strstr(line, ".conf");
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if (x) *x = 0;
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/* Add empty space. */
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strcat(line, " ");
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}
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if (!silent)
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print(0, "Loading %sconfiguration", line);
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while (!feof(fp)) {
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if (!fgets(line, sizeof(line), fp))
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continue;
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chomp(line);
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tabstospaces(line);
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_d("conf: %s", line);
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parse_static(line);
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parse_dynamic(line, NULL);
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}
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fclose(fp);
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return 0;
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}
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/* Reload all *.conf in /etc/finit.d/ */
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void conf_reload_dynamic(void)
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{
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int i, num;
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char *dir = rcsd;
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struct dirent **e;
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/* Mark and sweep */
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svc_mark_dynamic();
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num = scandir(dir, &e, NULL, alphasort);
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if (num < 0) {
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_d("No files found in %s, skipping ...", dir);
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return;
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}
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for (i = 0; i < num; i++) {
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char *name = e[i]->d_name;
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char path[CMD_SIZE];
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struct stat st;
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struct timeval mtime;
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snprintf(path, sizeof(path), "%s/%s", dir, name);
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/* Check that it's an actual file ... */
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if (stat(path, &st)) {
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_d("Cannot even read .conf file %s, skipping ...", path);
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continue;
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}
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if (S_ISEXEC(st.st_mode) || S_ISDIR(st.st_mode))
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continue;
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||||
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||||
/* Check that file ends with '.conf' */
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if (strcmp(&path[strlen(path) - 5], ".conf")) {
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_d("File %s is not a .conf, skipping ... ", path);
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continue;
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||||
}
|
||||
|
||||
TIMESPEC_TO_TIMEVAL(&mtime, &st.st_mtim);
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parse_conf_dynamic(path, &mtime);
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}
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|
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while (num--)
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||||
free(e[num]);
|
||||
free(e);
|
||||
|
||||
set_hostname(&hostname);
|
||||
}
|
||||
|
||||
int conf_parse_config(void)
|
||||
{
|
||||
username = strdup(DEFUSER);
|
||||
hostname = strdup(DEFHOST);
|
||||
|
||||
return parse_conf(FINIT_CONF);
|
||||
}
|
||||
|
||||
/**
|
||||
* Local Variables:
|
||||
* indent-tabs-mode: t
|
||||
* c-file-style: "linux"
|
||||
* End:
|
||||
*/
|
||||
Reference in new issue
Block a user