Improve toolbox SIGPIPE behavior.

#include <signal.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

int main(int, char **);

    { 0, 0 },

};

static void SIGPIPE_handler(int signal) {

    // Those desktop Linux tools that catch SIGPIPE seem to agree that it's

    // a successful way to exit, not a failure. (Which makes sense --- we were

    // told to stop by a reader, rather than failing to continue ourselves.)

    _exit(0);

}

int main(int argc, char **argv)

{

    int i;

    char *name = argv[0];

    // Let's assume that none of this code handles broken pipes. At least ls,

    // ps, and top were broken (though I'd previously added this fix locally

    // to top). We exit rather than use SIG_IGN because tools like top will

    // just keep on writing to nowhere forever if we don't stop them.

    signal(SIGPIPE, SIGPIPE_handler);

    if((argc > 1) && (argv[1][0] == '@')) {

        name = argv[1] + 1;

        argc--;

static int numcmp(long long a, long long b);

static void usage(char *cmd);

static void exit_top(int signal) {

  exit(EXIT_FAILURE);

}

int top_main(int argc, char *argv[]) {

    num_used_procs = num_free_procs = 0;

    signal(SIGPIPE, exit_top);

    max_procs = 0;

    delay = 3;

    iterations = -1;