diff options
| -rw-r--r-- | cmd/Makemodule.am | 5 | ||||
| -rw-r--r-- | cmd/service/schedule.c | 90 | ||||
| -rw-r--r-- | cmd/service/service.8 | 11 | ||||
| -rw-r--r-- | cmd/service/unschedule.c | 82 |
4 files changed, 187 insertions, 1 deletions
diff --git a/cmd/Makemodule.am b/cmd/Makemodule.am index d19894f..76a0e49 100644 --- a/cmd/Makemodule.am +++ b/cmd/Makemodule.am @@ -26,6 +26,11 @@ service_CFLAGS = $(AM_CFLAGS) service_LDFLAGS = $(AM_LDFLAGS) service_LDADD = libinit.a libcfg.a +if GCROND +service_SOURCES += cmd/service/schedule.c +service_SOURCES += cmd/service/unschedule.c +endif + if USYSLOGD syslog_SOURCES = cmd/syslog.c syslog_CPPFLAGS = $(AM_CPPFLAGS) diff --git a/cmd/service/schedule.c b/cmd/service/schedule.c new file mode 100644 index 0000000..41a4f1d --- /dev/null +++ b/cmd/service/schedule.c @@ -0,0 +1,90 @@ +/* SPDX-License-Identifier: GPL-3.0-or-later */ +/* + * Copyright (C) 2018 - David Oberhollenzer + * + * 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 3 of the License, 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, see <https://www.gnu.org/licenses/>. + */ +#include <sys/types.h> +#include <sys/stat.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdio.h> +#include <errno.h> + +#include "servicecmd.h" + +static int cmd_schedule(int argc, char **argv) +{ + char *target, *linkname, *ptr; + int ret = EXIT_FAILURE; + struct stat sb; + + if (check_arguments(argv[0], argc, 2, 2)) + return EXIT_FAILURE; + + for (ptr = argv[1]; isalnum(*ptr) || *ptr == '_'; ++ptr) + ; + + if (*ptr != '\0') { + fprintf(stderr, "Invalid service name '%s'\n", argv[1]); + tell_read_help(argv[0]); + return EXIT_FAILURE; + } + + if (asprintf(&target, "%s/%s.gcron", TEMPLATEDIR, argv[1]) < 0) { + perror("asprintf"); + return EXIT_FAILURE; + } + + if (stat(target, &sb)) { + fprintf(stderr, "%s: %s\n", target, strerror(errno)); + goto out_tgt; + } + + if ((sb.st_mode & S_IFMT) != S_IFREG) { + fprintf(stderr, "%s: must be a regular file\n", target); + goto out_tgt; + } + + if (asprintf(&linkname, "%s/%s", GCRONDIR, argv[1]) < 0) { + perror("asprintf"); + goto out_tgt; + } + + if (symlink(target, linkname)) { + fprintf(stderr, "creating symlink '%s' -> '%s: %s\n", + linkname, target, strerror(errno)); + goto out; + } + + ret = EXIT_SUCCESS; +out: + free(linkname); +out_tgt: + free(target); + return ret; +} + +static command_t schedule = { + .cmd = "schedule", + .usage = "<name>", + .s_desc = "enable a gcrond service", + .l_desc = "This marks a gcrond service as enabled by creating a " + "symlink in " GCRONDIR " pointing to a template file in " + TEMPLATEDIR " with a .gcron extension.", + .run_cmd = cmd_schedule, +}; + +REGISTER_COMMAND(schedule) diff --git a/cmd/service/service.8 b/cmd/service/service.8 index 6465db6..a897817 100644 --- a/cmd/service/service.8 +++ b/cmd/service/service.8 @@ -28,6 +28,12 @@ configuration directory, pointing to the service template file. An optional argument can be supplied to parameterize the template. .TP +.BR schedule " " \fI<service>\fP +If built with support for gcrond, enable a gcron service by creating a symlink +in the gcrond configuration directory, pointing to the service file. + +The extension \fB.gcron\fP is automatically appended to the service name. +.TP .BR disable " " \fI<command>\fP " " \fI[arguments]\fP Disable (but do not stop) a system service by removing the corresponding symlink in the configuration directory. @@ -35,8 +41,11 @@ symlink in the configuration directory. If the service is parameterized, arguments have to be specified to disable the desired service instance. .TP +.BR unschedule " " \fI<service>\fP +If built with support for gcrond, disable a gcron service by removing the +corresponding symlink in the gcron configuration directory. +.TP .BR dumpscript " " \fI<command>\fP " " \fI[arguments]\fP - Parse a service file from and produce a pseudo shell script containing the exact commands executed when starting the service. .SH AVAILABILITY diff --git a/cmd/service/unschedule.c b/cmd/service/unschedule.c new file mode 100644 index 0000000..aea6982 --- /dev/null +++ b/cmd/service/unschedule.c @@ -0,0 +1,82 @@ +/* SPDX-License-Identifier: GPL-3.0-or-later */ +/* + * Copyright (C) 2018 - David Oberhollenzer + * + * 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 3 of the License, 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, see <https://www.gnu.org/licenses/>. + */ +#include <sys/types.h> +#include <sys/stat.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <stdio.h> +#include <errno.h> + +#include "servicecmd.h" + +static int cmd_unschedule(int argc, char **argv) +{ + int ret = EXIT_FAILURE; + char *linkname, *ptr; + struct stat sb; + + if (check_arguments(argv[0], argc, 2, 2)) + return EXIT_FAILURE; + + for (ptr = argv[1]; isalnum(*ptr) || *ptr == '_'; ++ptr) + ; + + if (*ptr != '\0') { + fprintf(stderr, "Invalid service name '%s'\n", argv[1]); + tell_read_help(argv[0]); + return EXIT_FAILURE; + } + + if (asprintf(&linkname, "%s/%s.gcron", GCRONDIR, argv[1]) < 0) { + perror("asprintf"); + return EXIT_FAILURE; + } + + if (lstat(linkname, &sb)) { + fprintf(stderr, "lstat %s: %s\n", linkname, strerror(errno)); + goto out; + } + + if ((sb.st_mode & S_IFMT) != S_IFLNK) { + fprintf(stderr, "error: '%s' is not a symlink!", linkname); + goto out; + } + + if (unlink(linkname)) { + fprintf(stderr, "removing %s: %s\n", + linkname, strerror(errno)); + goto out; + } + + ret = EXIT_SUCCESS; +out: + free(linkname); + return ret; +} + +static command_t unschedule = { + .cmd = "unschedule", + .usage = "<name>", + .s_desc = "disable a gcrond service", + .l_desc = "This disables a gcrond service by removing the coresponding " + "symlink in " GCRONDIR ".", + .run_cmd = cmd_unschedule, +}; + +REGISTER_COMMAND(unschedule) |