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/* ps.c:
*
* Copyright (C) 1998 Kenneth Albanowski <kjahds@kjahds.com>,
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include "sash.h"
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <pwd.h>
#include <grp.h>
#include <time.h>
#include <unistd.h>
#include <linux/major.h>
#include <linux/param.h>
#include <sys/time.h>
#include <sys/param.h>
char psbuf[256];
char name[40];
int pid, state;
char statec;
int ppid, pgrp, session;
dev_t tty;
char tty_name[10];
char master[] = "pqrstuvwxyzabcde";
#define MAJOR(x) ((x) >> 8)
#define MINOR(x) ((x) & 0xff)
int port_xlate[16] = {1, 3, 5, 7,9 ,11,13,15,
2, 4, 6, 8,10,12,14,16};
void dev_to_name(dev_t dev, char * ttyname)
{
strcpy(ttyname, "");
if (MAJOR(dev) == 75)
sprintf(ttyname,"X%d", MINOR(dev));
else if (MAJOR(dev) == TTY_MAJOR)
sprintf(ttyname,"S%d", MINOR(dev)-64);
else if (MAJOR(dev) == PTY_SLAVE_MAJOR)
sprintf(ttyname,"%c%x", master[MINOR(dev) / 16], MINOR(dev) & 0xf);
}
void
do_ps(argc, argv)
int argc;
char **argv;
{
int i;
int h;
int max;
FILE * f;
DIR * d;
unsigned long bytes, sbytes;
struct dirent * de;
char *ext;
int l;
time_t time_now;
long uptime_secs;
float idle_secs;
float seconds, start, total_time;
int utime, stime, start_time;
int pcpu;
/*extern int _vfprintf_fp_ref, _vfscanf_fp_ref;*/
#if 0
fclose(stdin);
#endif
printf(" PID PORT STAT SIZE SHARED %%CPU COMMAND\n"/*, _vfprintf_fp_ref, _vfscanf_fp_ref*/);
h = open("/proc/uptime", O_RDONLY);
if (h==-1) {
perror("Unable to open /proc/uptime\n");
return;
}
l = read(h, psbuf, 255);
close(h);
if (l<=0) {
perror("Unable to read uptime");
return;
}
psbuf[l] = '\0';
psbuf[255] = '\0';
ext = psbuf;
uptime_secs = atol(ext);
time_now = time(0);
d = opendir("/proc");
if (!d)
return;
while (de = readdir(d)) {
for(i=0;i<strlen(de->d_name);i++)
if (!isdigit(de->d_name[i]))
goto next;
sprintf(psbuf, "/proc/%s/stat", de->d_name);
h = open(psbuf, O_RDONLY);
if (h==-1)
continue;
l = read(h, psbuf, 255);
if (l<=0) {
perror("Unable to read status");
close(h);
continue;
}
psbuf[l] = '\0';
psbuf[255] = '\0';
ext = strrchr(psbuf, ')');
ext[0] = '\0';
statec = ext[2];
ext += 4;
ppid = atoi(ext);
ext = strchr(ext, ' ')+1;
pgrp = atoi(ext);
ext = strchr(ext, ' ')+1;
session = atoi(ext);
ext = strchr(ext, ' ')+1;
tty = atoi(ext);
ext = strchr(ext, ' ')+1;
//printf("1|%s\n", ext);
//tpgid
ext = strchr(ext, ' ')+1;
//printf("2|%s\n", ext);
//flags
ext = strchr(ext, ' ')+1;
//printf("3|%s\n", ext);
//min_flt
ext = strchr(ext, ' ')+1;
//printf("4|%s\n", ext);
//cmin_flt
ext = strchr(ext, ' ')+1;
//printf("5|%s\n", ext);
//maj_flt
ext = strchr(ext, ' ')+1;
//printf("6|%s\n", ext);
//cmaj_flt
ext = strchr(ext, ' ')+1;
//printf("7|%s\n", ext);
utime = atoi(ext);
ext = strchr(ext, ' ')+1;
//printf("8|%s\n", ext);
stime = atoi(ext);
ext = strchr(ext, ' ')+1;
//printf("9|%s\n", ext);
//cutime
ext = strchr(ext, ' ')+1;
//printf("10|%s\n", ext);
//cstime
ext = strchr(ext, ' ')+1;
//priority
ext = strchr(ext, ' ')+1;
//nice
ext = strchr(ext, ' ')+1;
//timeout
ext = strchr(ext, ' ')+1;
//it_real_value
ext = strchr(ext, ' ')+1;
start_time = atoi(ext);
ext = strchr(psbuf, '(');
ext++;
strcpy(name, ext);
pid = atoi(psbuf);
state = statec;
close(h);
dev_to_name(tty, tty_name);
bytes = 0;
sbytes = 0;
sprintf(psbuf, "/proc/%s/status", de->d_name);
f = fopen(psbuf, "r");
if (f) {
while (fgets(psbuf, 250, f)) {
if (strncmp(psbuf, "Mem:", 4) == 0) {
bytes = atol(psbuf+5);
bytes /= 1024;
} else if (strncmp(psbuf, "Shared:", 7) == 0) {
sbytes = atol(psbuf+8);
sbytes /= 1024;
} else if (strncmp(psbuf, "VmSize:", 7) == 0) {
bytes = atol(psbuf+8);
}
}
fclose(f);
}
seconds = ((uptime_secs * (long)HZ) - start_time) / HZ;
/*printf("seconds=%s\n", gcvt(seconds, 15, psbuf));*/
start = time_now - seconds;
/*
printf("1\n");
gcvt(start, 15, psbuf);
printf("2\n");
printf("start=%s\n", psbuf);
printf("utime=%d, stime=%d. start_time=%d\n", utime, stime, start_time);
*/
total_time = (utime + stime);
/*printf("total_time=%s\n", gcvt(total_time, 15, psbuf));*/
pcpu = seconds ?
(total_time * 10.0f * 100.0f / (float)HZ) / seconds :
0;
if (pcpu > 999) pcpu = 999;
sprintf(psbuf, "/proc/%s/cmdline", de->d_name);
h = open(psbuf, O_RDONLY);
if (h == -1) {
perror("Unable to open cmdline");
continue;
}
l = read(h, psbuf, 255);
if (l < 0) {
perror("Unable to read cmdline");
close(h);
continue;
}
close(h);
/*
* the args are NUL separated, substitute spaces instead
*/
psbuf[l] = '\0';
i=l;
while(psbuf[i] == '\0')
i--; /* Don't bother with trailing NULs */
while(--i > 0)
if (psbuf[i] == '\0')
psbuf[i] = ' ';
printf("%5d %4s %c %4ldK %3ldK %2u.%u %s\n", pid, tty_name, state,
bytes, sbytes,
pcpu / 10, pcpu % 10,
/*(int)seconds / 60, (int)seconds % 60,*/
l ? psbuf : name);
next:
;
}
closedir(d);
}
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