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time(1) cleanup

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sin 2015-02-27 21:43:11 +00:00
parent 5c8d5c1dca
commit 84e7fbda24
1 changed files with 8 additions and 12 deletions
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20
time.c
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@ -1,11 +1,14 @@
#include <stdio.h> /* See LICENSE file for copyright and license details. */
#include <unistd.h>
#include <sys/times.h> #include <sys/times.h>
#include <sys/wait.h> #include <sys/wait.h>
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include "util.h" #include "util.h"
void static void
usage(void) usage(void)
{ {
eprintf("usage: %s [-p] utility [argument ...]\n", argv0); eprintf("usage: %s [-p] utility [argument ...]\n", argv0);
@ -35,19 +38,12 @@ main(int argc, char *argv[])
if ((ticks = sysconf(_SC_CLK_TCK)) < 0) if ((ticks = sysconf(_SC_CLK_TCK)) < 0)
eprintf("sysconf() failed to retrieve clock ticks per second:"); eprintf("sysconf() failed to retrieve clock ticks per second:");
if ((rbeg = times(&tms)) < 0) /* POSIX doesn't say NULL is ok... */ if ((rbeg = times(&tms)) < 0)
eprintf("times() failed to retrieve start times:"); eprintf("times() failed to retrieve start times:");
if (!(pid = fork())) { /* child */ if (!(pid = fork())) { /* child */
execvp(*argv, argv); execvp(*argv, argv);
/* FIXME: check errno for POSIX exit status enprintf(errno == ENOENT ? 127 : 126, "failed to exec %s:", *argv);
* 126: found could not be invoked
* 127: could not be found
* problem is some like EACCESS can mean either...
* worth doing manual path search for correct value? also gives more
* accurate time as the patch search wouldn't be included in child's
* user/sys times... */
enprintf(127, "failed to exec %s:", *argv);
} }
waitpid(pid, &status, 0); waitpid(pid, &status, 0);