Add usage() and use err(3).
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parent
fd129a0245
commit
80c486a414
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=28203
@ -38,12 +38,12 @@
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.Nm time
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.Nd time command execution
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.Sh SYNOPSIS
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.Nm time
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.Nm
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.Op Fl l
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.Ar command
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.Sh DESCRIPTION
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The
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.Nm time
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.Nm
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utility
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executes and
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times
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@ -55,7 +55,7 @@ shell.
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After the
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.Ar command
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finishes,
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.Nm time
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.Nm
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writes to the standard error stream,
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(in seconds):
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the total time elapsed,
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@ -75,7 +75,7 @@ structure are printed as well.
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The
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.Xr csh 1
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has its own and syntactically different builtin version of
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.Nm time.
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.Nm time .
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The command described here
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is available as
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.Pa /usr/bin/time
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@ -32,13 +32,17 @@
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*/
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#ifndef lint
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static char copyright[] =
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static const char copyright[] =
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"@(#) Copyright (c) 1987, 1988, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 6/6/93";
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#endif
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static const char rcsid[] =
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"$Id$";
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#endif /* not lint */
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#include <sys/types.h>
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@ -51,14 +55,16 @@ static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 6/6/93";
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#include <err.h>
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#include <stdio.h>
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#include <unistd.h>
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static int getstathz __P((void));
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static void usage __P((void));
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int
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main(argc, argv)
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int argc;
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char **argv;
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{
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extern int optind;
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register int pid;
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int ch, status, lflag;
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struct timeval before, after;
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@ -72,8 +78,7 @@ main(argc, argv)
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break;
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case '?':
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default:
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fprintf(stderr, "usage: time [-l] command.\n");
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exit(1);
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usage();
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}
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if (!(argc -= optind))
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@ -83,12 +88,11 @@ main(argc, argv)
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gettimeofday(&before, (struct timezone *)NULL);
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switch(pid = vfork()) {
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case -1: /* error */
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perror("time");
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exit(1);
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err(1, "time");
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/* NOTREACHED */
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case 0: /* child */
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execvp(*argv, argv);
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perror(*argv);
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warn("%s", *argv);
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_exit(1);
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/* NOTREACHED */
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}
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@ -98,7 +102,7 @@ main(argc, argv)
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while (wait3(&status, 0, &ru) != pid); /* XXX use waitpid */
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gettimeofday(&after, (struct timezone *)NULL);
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if (status&0377)
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fprintf(stderr, "Command terminated abnormally.\n");
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warnx("command terminated abnormally");
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after.tv_sec -= before.tv_sec;
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after.tv_usec -= before.tv_usec;
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if (after.tv_usec < 0)
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@ -154,6 +158,13 @@ main(argc, argv)
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exit (WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE);
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}
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static void
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usage()
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{
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fprintf(stderr, "usage: time [-l] command\n");
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exit(1);
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}
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/*
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* Return the frequency of the kernel's statistics clock.
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*/
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