int do_ps(void)
{
int i, pfd, ptsize, nodesize;
struct p_tab_buffer *ppbuf;
struct p_tab *pp;
uid = geteuid();
pid = getpid();
if ((pfd = open("/dev/proc", O_RDONLY)) < 0) {
perror("ps");
return 1;
}
if (ioctl(pfd, 2, (char *) &nodesize) != 0) {
perror("ioctl");
close(pfd);
return 1;
}
if (nodesize > sizeof(struct p_tab_buffer)) {
fprintf(stderr, "kernel/user include mismatch.\n");
exit(1);
}
if (ioctl(pfd, 1, (char *) &ptsize) != 0) {
perror("ioctl");
close(pfd);
return 1;
}
if (ptsize > PTABSIZE)
ptsize = PTABSIZE;
for (i = 0; i < ptsize; ++i) {
if (read(pfd, (char *) &ptab[i], nodesize) != nodesize) {
fprintf(stderr, "ps: error reading from /dev/proc\n");
close(pfd);
return 1;
}
ppid_slot[i] = ptab[i].p_tab.p_pptr - ptab[0].p_tab.p_pptr;
/* Learn our tty internal reference as we go */
if (ptab[i].p_tab.p_status && ptab[i].p_tab.p_pid == pid)
tty = ptab[i].p_tab.p_tty;
}
close(pfd);
print_header();
for (ppbuf = ptab, i = 0; i < ptsize; ++i, ++ppbuf) {
pp = &ppbuf->p_tab;
if (!show_process(pp))
continue;
display_process(pp, i);
}
return 0;
}
int main()
{
printf("Content-type:text/html\r\n\r\n");
printf("<html><head><title>CPUINFO</title>\
<meta http-equiv='Content-Type' content='text/html; charset=utf-8'/></head>");
printf("<body><table style='border:2px; border-color:red'; >");
show_process();
printf("</table></body></html>\n");
return 0;
}
