diff options
Diffstat (limited to 'bin/sleep')
| -rw-r--r-- | bin/sleep/Makefile | 9 | ||||
| -rw-r--r-- | bin/sleep/Makefile.depend | 18 | ||||
| -rw-r--r-- | bin/sleep/sleep.1 | 133 | ||||
| -rw-r--r-- | bin/sleep/sleep.c | 130 | ||||
| -rw-r--r-- | bin/sleep/tests/Makefile | 5 | ||||
| -rw-r--r-- | bin/sleep/tests/Makefile.depend | 10 |
6 files changed, 305 insertions, 0 deletions
diff --git a/bin/sleep/Makefile b/bin/sleep/Makefile new file mode 100644 index 000000000000..d0310fc4bead --- /dev/null +++ b/bin/sleep/Makefile @@ -0,0 +1,9 @@ +.include <src.opts.mk> + +PACKAGE=runtime +PROG= sleep + +HAS_TESTS= +SUBDIR.${MK_TESTS}+= tests + +.include <bsd.prog.mk> diff --git a/bin/sleep/Makefile.depend b/bin/sleep/Makefile.depend new file mode 100644 index 000000000000..866f7ef5d25b --- /dev/null +++ b/bin/sleep/Makefile.depend @@ -0,0 +1,18 @@ +# Autogenerated - do NOT edit! + +DIRDEPS = \ + include \ + include/xlocale \ + lib/${CSU_DIR} \ + lib/libc \ + lib/libcapsicum \ + lib/libcasper/libcasper \ + lib/libcompiler_rt \ + lib/msun \ + + +.include <dirdeps.mk> + +.if ${DEP_RELDIR} == ${_DEP_RELDIR} +# local dependencies - needed for -jN in clean tree +.endif diff --git a/bin/sleep/sleep.1 b/bin/sleep/sleep.1 new file mode 100644 index 000000000000..c9069a015706 --- /dev/null +++ b/bin/sleep/sleep.1 @@ -0,0 +1,133 @@ +.\"- +.\" Copyright (c) 1990, 1993, 1994 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" the Institute of Electrical and Electronics Engineers, Inc. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.Dd March 22, 2024 +.Dt SLEEP 1 +.Os +.Sh NAME +.Nm sleep +.Nd suspend execution for an interval of time +.Sh SYNOPSIS +.Nm +.Ar number Ns Op Ar unit +.Op ... +.Sh DESCRIPTION +The +.Nm +command suspends execution for a minimum of +.Ar number +seconds (the default, or unit +.Li s ) , +minutes (unit +.Li m ) , +hours (unit +.Li h ) , +or days (unit +.Li d ) . +Intervals can be written in any form allowed by +.Xr strtod 3 . +If multiple intervals are given, they are added together. +If the final sum is zero or negative, +.Nm +exits immediately. +.Pp +If the +.Nm +command receives a signal, it takes the standard action. +When the +.Dv SIGINFO +signal is received, the estimate of the amount of seconds left to +sleep is printed on the standard output. +.Sh IMPLEMENTATION NOTES +The +.Dv SIGALRM +signal is not handled specially by this implementation. +.Sh EXIT STATUS +.Ex -std +.Sh EXAMPLES +To run a command after half an hour: +.Pp +.Dl (sleep 0.5h; sh command_file >out 2>err)& +.Pp +This incantation would wait half an hour before +running the script +.Pa command_file . +See the +.Xr at 1 +utility for another way to do this. +.Pp +To reiteratively run a command: +.Pp +.Bd -literal -offset indent -compact +while :; do + if ! [ -r zzz.rawdata ] ; then + sleep 5m + else + for i in *.rawdata ; do + sleep 70 + awk -f collapse_data "$i" + done >results + break + fi +done +.Ed +.Pp +The scenario for a script such as this might be: a program currently +running is taking longer than expected to process a series of +files, and it would be nice to have +another program start processing the files created by the first +program as soon as it is finished (when +.Pa zzz.rawdata +is created). +The script checks every five minutes for the file +.Pa zzz.rawdata , +when the file is found, then another portion processing +is done courteously by sleeping for 70 seconds in between each +.Xr awk 1 +job. +.Sh SEE ALSO +.Xr nanosleep 2 , +.Xr sleep 3 +.Sh STANDARDS +The +.Nm +command is expected to be +.St -p1003.2 +compatible. +.Pp +Support for non-integer intervals, units other than seconds, and +multiple intervals which are added together are non-portable +extensions first introduced in GNU sh-utils 2.0a (released in 2002). +.Sh HISTORY +A +.Nm +command appeared in +.At v4 . diff --git a/bin/sleep/sleep.c b/bin/sleep/sleep.c new file mode 100644 index 000000000000..34d335cf4736 --- /dev/null +++ b/bin/sleep/sleep.c @@ -0,0 +1,130 @@ +/*- + * Copyright (c) 1988, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <capsicum_helpers.h> +#include <err.h> +#include <errno.h> +#include <limits.h> +#include <math.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <time.h> +#include <unistd.h> + +static volatile sig_atomic_t report_requested; + +static void +report_request(int signo __unused) +{ + report_requested = 1; +} + +static void __dead2 +usage(void) +{ + fprintf(stderr, "usage: sleep number[unit] [...]\n" + "Unit can be 's' (seconds, the default), " + "m (minutes), h (hours), or d (days).\n"); + exit(1); +} + +static double +parse_interval(const char *arg) +{ + double num; + char unit, extra; + + switch (sscanf(arg, "%lf%c%c", &num, &unit, &extra)) { + case 2: + switch (unit) { + case 'd': + num *= 24; + /* FALLTHROUGH */ + case 'h': + num *= 60; + /* FALLTHROUGH */ + case 'm': + num *= 60; + /* FALLTHROUGH */ + case 's': + if (!isnan(num)) + return (num); + } + break; + case 1: + if (!isnan(num)) + return (num); + } + warnx("invalid time interval: %s", arg); + return (INFINITY); +} + +int +main(int argc, char *argv[]) +{ + struct timespec time_to_sleep; + double seconds; + time_t original; + + if (caph_limit_stdio() < 0 || caph_enter() < 0) + err(1, "capsicum"); + + while (getopt(argc, argv, "") != -1) + usage(); + argc -= optind; + argv += optind; + if (argc < 1) + usage(); + + seconds = 0; + while (argc--) + seconds += parse_interval(*argv++); + if (seconds > INT_MAX) + usage(); + if (seconds < 1e-9) + exit(0); + original = time_to_sleep.tv_sec = (time_t)seconds; + time_to_sleep.tv_nsec = 1e9 * (seconds - time_to_sleep.tv_sec); + + signal(SIGINFO, report_request); + + while (nanosleep(&time_to_sleep, &time_to_sleep) != 0) { + if (errno != EINTR) + err(1, "nanosleep"); + if (report_requested) { + /* Reporting does not bother with nanoseconds. */ + warnx("about %ld second(s) left out of the original %ld", + (long)time_to_sleep.tv_sec, (long)original); + report_requested = 0; + } + } + + exit(0); +} diff --git a/bin/sleep/tests/Makefile b/bin/sleep/tests/Makefile new file mode 100644 index 000000000000..1712dc1ecef6 --- /dev/null +++ b/bin/sleep/tests/Makefile @@ -0,0 +1,5 @@ +.include <bsd.own.mk> + +NETBSD_ATF_TESTS_SH= sleep_test + +.include <bsd.test.mk> diff --git a/bin/sleep/tests/Makefile.depend b/bin/sleep/tests/Makefile.depend new file mode 100644 index 000000000000..11aba52f82cf --- /dev/null +++ b/bin/sleep/tests/Makefile.depend @@ -0,0 +1,10 @@ +# Autogenerated - do NOT edit! + +DIRDEPS = \ + + +.include <dirdeps.mk> + +.if ${DEP_RELDIR} == ${_DEP_RELDIR} +# local dependencies - needed for -jN in clean tree +.endif |