mirror of
https://github.com/pygos/init.git
synced 2024-11-22 19:19:47 +01:00
David Oberhollenzer
028394b8a5
This commit add the ability to initd to reload the service configuration
while running. The new configuration is merged with the existing one as
follows:
For each target:
- If the existing service list is not NULL, we have not started that
target yet. Simply replace it with the new list.
- If it is NULL, the services have already been started.
- First, remove all entries for services in that target that no
loner exist (except from the 'running' list).
- Second, add new services that we don't have yet. Treat them as
recently diseased and let the user start them manualy.
Signed-off-by: David Oberhollenzer <goliath@infraroot.at>
85 lines
1.7 KiB
C
85 lines
1.7 KiB
C
/* SPDX-License-Identifier: ISC */
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <signal.h>
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#include <stdio.h>
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#include <errno.h>
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#include "servicecmd.h"
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static int cmd_enable(int argc, char **argv)
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{
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char *target, *linkname, *ptr;
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int ret = EXIT_FAILURE;
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struct stat sb;
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if (check_arguments(argv[0], argc, 2, 3))
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return EXIT_FAILURE;
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for (ptr = argv[1]; isalnum(*ptr) || *ptr == '_'; ++ptr)
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;
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if (*ptr != '\0') {
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fprintf(stderr, "Invalid service name '%s'\n", argv[1]);
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tell_read_help(argv[0]);
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return EXIT_FAILURE;
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}
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if (asprintf(&target, "%s/%s", TEMPLATEDIR, argv[1]) < 0) {
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perror("asprintf");
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return EXIT_FAILURE;
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}
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if (stat(target, &sb)) {
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fprintf(stderr, "%s: %s\n", target, strerror(errno));
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goto out_tgt;
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}
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if ((sb.st_mode & S_IFMT) != S_IFREG) {
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fprintf(stderr, "%s: must be a regular file\n", target);
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goto out_tgt;
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}
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if (argc == 3) {
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ret = asprintf(&linkname, "%s/%s@%s",
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SVCDIR, argv[1], argv[2]);
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} else {
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ret = asprintf(&linkname, "%s/%s", SVCDIR, argv[1]);
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}
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if (ret < 0) {
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perror("asprintf");
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goto out_tgt;
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}
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if (symlink(target, linkname)) {
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fprintf(stderr, "creating symlink '%s' -> '%s: %s\n",
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linkname, target, strerror(errno));
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goto out;
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}
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kill(1, SIGHUP);
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ret = EXIT_SUCCESS;
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out:
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free(linkname);
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out_tgt:
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free(target);
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return ret;
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}
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static command_t enable = {
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.cmd = "enable",
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.usage = "<name> [argument]",
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.s_desc = "enable a service",
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.l_desc = "This marks a service as enabled by creating a symlink in "
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SVCDIR " pointing to the template file in " TEMPLATEDIR ". "
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"An optional argument can be supplied to parameterize the "
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"template.",
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.run_cmd = cmd_enable,
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};
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REGISTER_COMMAND(enable)
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