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/*
(C) Nelson Murilo - 2000/09/18
Version 0.4
C port from chkproc.pl code from Klaus Steding-Jessen <jessen@nic.br>
and Cristine Hoepers <cristine@nic.br> +little output changes.
*/
#if !defined(__linux__) && !defined(__FreeBSD__)
main (){ return 0; }
#else
#include <stdio.h>
#include <sys/types.h>
#include <dirent.h>
#define MAX_PROCESSES 65535
#define MAX_BUF 1024
#define PS "ps auxwww"
int psproc [MAX_PROCESSES+1];
int dirproc[MAX_PROCESSES+1];
main(int argc, char **argv)
{
char buf[MAX_BUF], *p;
FILE *ps = popen(PS, "r");
DIR *proc = opendir("/proc");
struct dirent *dir;
int i, retps, retdir;
int verbose = 0;
if (!ps || !proc)
{
perror("ps or proc");
exit (1);
}
if (argc > 1 && !memcmp(argv[1], "-v", 2))
verbose++;
fgets(buf, MAX_BUF, ps); /* Skip header */
if (!isalpha(*buf))
{
fprintf(stderr, "OooPS!\n");
exit(2);
}
for (i = 1; i <= MAX_PROCESSES; i++) /* init matrix */
psproc[i] = dirproc[i] = 0;
while (fgets(buf, MAX_BUF, ps))
{
p = buf;
while (*p != ' ') /* Skip USER */
p++;
while (*p == ' ') /* Skip spaces */
p++;
psproc[atol(p)]=1;
}
pclose(ps);
while (dir = readdir(proc))
{
if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, "..") ||
!isdigit(*dir->d_name))
continue;
dirproc[atol(dir->d_name)]=1;
}
closedir(proc);
/* Brute force */
strcpy(buf, "/proc/");
retps = retdir = 0;
for (i = 1; i <= MAX_PROCESSES; i++)
{
snprintf(&buf[6], 6, "%d", i);
if (!chdir(buf))
{
if (!dirproc[i])
{
retdir++;
if (verbose)
printf ("PID %5d: not in readdir output\n", i);
}
if (!psproc[i])
{
retps++;
if (verbose)
printf ("PID %5d: not in ps output\n", i);
}
}
}
if (retdir)
printf("You have % 5d process hidden for readdir command\n", retdir);
if (retps)
printf("You have % 5d process hidden for ps command\n", retps);
return (retps+retps);
}
#endif
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