diff options
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/.gitignore | 1 | ||||
| -rw-r--r-- | scripts/sandman.1 | 36 | ||||
| -rw-r--r-- | scripts/sandman.m | 88 |
3 files changed, 125 insertions, 0 deletions
diff --git a/scripts/.gitignore b/scripts/.gitignore new file mode 100644 index 0000000..f6dc107 --- /dev/null +++ b/scripts/.gitignore @@ -0,0 +1 @@ +sandman diff --git a/scripts/sandman.1 b/scripts/sandman.1 new file mode 100644 index 0000000..35765ec --- /dev/null +++ b/scripts/sandman.1 @@ -0,0 +1,36 @@ +.Dd February 12, 2020 +.Dt SANDMAN 1 +.Os +. +.Sh NAME +.Nm sandman +.Nd sleep wrapper +. +.Sh SYNOPSIS +.Nm +.Op Fl t Ar secs +.Ar command ... +. +.Sh DESCRIPTION +The +.Nm +utility wraps a +.Ar command , +sending it +.Dv SIGHUP +when the system goes to sleep, +and restarting it +when the system wakes. +. +.Pp +The arguments are as follows: +.Bl -tag -width Ds +.It Fl t Ar secs +Wait for +.Ar secs +before restarting the process. +The default is 8 seconds. +.El +. +.Sh AUTHORS +.An June Bug Aq Mt june@causal.agency diff --git a/scripts/sandman.m b/scripts/sandman.m new file mode 100644 index 0000000..838920d --- /dev/null +++ b/scripts/sandman.m @@ -0,0 +1,88 @@ +/* Copyright (C) 2019, 2020 C. McEnroe <june@causal.agency> + * + * 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/>. + */ + +#import <Cocoa/Cocoa.h> +#import <err.h> +#import <signal.h> +#import <stdio.h> +#import <stdlib.h> +#import <sysexits.h> +#import <unistd.h> + +typedef unsigned uint; + +static pid_t pid; +static void spawn(char *argv[]) { + pid = fork(); + if (pid < 0) err(EX_OSERR, "fork"); + if (pid) return; + execvp(argv[0], argv); + err(EX_CONFIG, "%s", argv[0]); +} + +static void handler(int signal) { + (void)signal; + int status; + pid_t pid = wait(&status); + if (pid < 0) _exit(EX_OSERR); + _exit(status); +} + +int main(int argc, char *argv[]) { + uint delay = 8; + + int opt; + while (0 < (opt = getopt(argc, argv, "t:"))) { + switch (opt) { + break; case 't': delay = strtoul(optarg, NULL, 10); + break; default: return EX_USAGE; + } + } + argc -= optind; + argv += optind; + if (!argc) errx(EX_USAGE, "command required"); + + NSWorkspace *workspace = [NSWorkspace sharedWorkspace]; + NSNotificationCenter *notifCenter = [workspace notificationCenter]; + + [notifCenter addObserverForName:NSWorkspaceWillSleepNotification + object:nil + queue:nil + usingBlock:^(NSNotification *notif) { + (void)notif; + signal(SIGCHLD, SIG_IGN); + int error = kill(pid, SIGHUP); + if (error) err(EX_UNAVAILABLE, "kill"); + int status; + wait(&status); + }]; + + [notifCenter addObserverForName:NSWorkspaceDidWakeNotification + object:nil + queue:nil + usingBlock:^(NSNotification *notif) { + (void)notif; + warnx("waiting %u seconds...", delay); + sleep(delay); + signal(SIGCHLD, handler); + spawn(argv); + }]; + + signal(SIGCHLD, handler); + spawn(argv); + + [[NSApplication sharedApplication] run]; +} |