/* Re-read the proc list each time we traverse it, because
sending signals may cause it to change. */
void slay_tree(int sig, pid_t pid, int include_children) {
proc_t **procs;
int i;
procs = readproctab(PROC_FILLSTAT);
slay_impl(procs, sig, pid, include_children);
for (i = 0; procs[i]; i++) {
free(procs[i]);
}
free(procs);
}
/***** main */
int main(int argc, char **argv) {
char *user = NULL;
utmp_t *u;
struct winsize win;
int header=1, longform=1, from=1, args, maxcmd=80, ch;
#ifndef W_SHOWFROM
from = 0;
#endif
for (args=0; (ch = getopt(argc, argv, "hlusfV")) != EOF; args++)
switch (ch) {
case 'h': header = 0; break;
case 'l': longform = 1; break;
case 's': longform = 0; break;
case 'f': from = !from; break;
case 'V': display_version(); exit(0);
case 'u': ignoreuser = 1; break;
default:
printf("usage: w -hlsufV [user]\n"
" -h skip header\n"
" -l long listing (default)\n"
" -s short listing\n"
" -u ignore uid of processes\n"
" -f toggle FROM field (default %s)\n"
" -V display version\n", FROM_STRING);
exit(1);
}
if ((argv[optind]))
user = (argv[optind]);
if (ioctl(1, TIOCGWINSZ, &win) != -1 && win.ws_col > 0)
maxcmd = win.ws_col;
if (maxcmd < 71) {
fprintf(stderr, "%d column window is too narrow\n", maxcmd);
exit(1);
}
maxcmd -= 29 + (from ? 16 : 0) + (longform ? 20 : 0);
if (maxcmd < 3)
fprintf(stderr, "warning: screen width %d suboptimal.\n", win.ws_col);
procs = readproctab(PROC_FILLCMD | PROC_FILLUSR);
if (header) { /* print uptime and headers */
print_uptime();
printf("USER TTY ");
if (from)
printf("FROM ");
if (longform)
printf(" LOGIN@ IDLE JCPU PCPU WHAT\n");
else
printf(" IDLE WHAT\n");
}
utmpname(UTMP_FILE);
setutent();
while ((u=getutent())) {
if (u->ut_type == USER_PROCESS &&
(user ? !strncmp(u->ut_user, user, USERSZ) : *u->ut_user))
showinfo(u, longform, maxcmd, from);
}
endutent();
return 0;
}