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#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include "os/DecOSF.h"
/* Make sure /proc is mounted */
char* OS_initialize()
{
struct statvfs svfs;
static char* no_proc = "/proc unavailable";
if( statvfs("/proc", &svfs) == -1 )
{
return no_proc;
}
return NULL;
}
/* FIXME we should get minimum info like process ID and ownership from
file stat-- does this work for IOCTL-proc? Does it for FS-proc? It
does on linux... */
void OS_get_table()
{
int maxproc, procnum, procbase;
int psdata;
char pathbuf[MAXPATHLEN];
/* defined in <sys/table.h> */
struct tbl_procinfo pstbl[PROCCNT];
/* defined in <sys/procfs.h> */
struct prpsinfo psbuf;
struct prcred pscredbuf;
/* variables to hold some values for bless_into_proc */
char state[20];
char pctcpu[7];
char pctmem[7];
long pr_age, now;
uid_t *psgroups;
int i;
AV *group_array;
SV *group_ref;
if( (maxproc = table( TBL_PROCINFO, 0, NULL, (unsigned int) -1, 0 )) == -1 )
return;
/* loop over all processes */
procbase = -1;
for( procnum = 0; procnum < maxproc; procnum ++)
{
/* Get the table entries */
if( (procbase < 0) || (procnum >= (procbase + PROCCNT)) )
{
procbase = procnum;
if( table( TBL_PROCINFO, procbase, pstbl, PROCCNT,
sizeof (struct tbl_procinfo)) == -1 )
continue;
}
/* See if the process exists */
if( pstbl[procnum % PROCCNT].pi_status == PI_EMPTY )
continue;
/* Construct path of the form /proc/proc_number */
sprintf( pathbuf, "/proc/%d", pstbl[procnum % PROCCNT].pi_pid );
if( (psdata = open( pathbuf, O_RDONLY )) == -1 ) continue;
if( ioctl(psdata, PIOCPSINFO, &psbuf) == -1 ) continue;
if( ioctl(psdata, PIOCCRED, &pscredbuf) == -1 ) continue;
if( (psgroups = malloc(pscredbuf.pr_ngroups * sizeof (u_int))) == NULL )
continue;
if( ioctl(psdata, PIOCGROUPS, psgroups) == -1 )
{
free(psgroups);
continue;
}
close(psdata);
/* translate process state, makros defined in <sys/proc.h> */
switch( psbuf.pr_state)
{
case SSLEEP:
strcpy(state, SLEEP);
break;
case SWAIT:
strcpy(state, WAIT);
break;
case SRUN:
strcpy(state, RUN);
break;
case SZOMB:
strcpy(state, ZOMBIE);
break;
case SSTOP:
strcpy(state, STOP);
break;
case SIDL:
strcpy(state, IDLE);
break;
}
now = time(NULL);
pr_age = now - psbuf.pr_start.tv_sec;
if (pr_age < 1) {
sprintf( pctcpu, "%3.2f", (float) 0.0); /* pr_time.tv_sec is 0 */
} else {
sprintf( pctcpu, "%3.2f", (float) ((psbuf.pr_time.tv_sec * 100) / pr_age));
}
/* create groups array */
group_array = newAV();
for (i = 0; i < pscredbuf.pr_ngroups; i++)
{
av_push(group_array, newSViv(psgroups[i]));
}
free(psgroups);
group_ref = newRV_noinc((SV *) group_array);
bless_into_proc( Format,
Fields,
psbuf.pr_uid, /* uid, uid_t is int */
psbuf.pr_gid, /* gid, gid_t is int */
pscredbuf.pr_euid, /* euid, uid_t is int */
pscredbuf.pr_egid, /* egid, uid_t is int */
pscredbuf.pr_suid, /* suid, uid_t is int */
pscredbuf.pr_sgid, /* sgid, uid_t is int */
group_ref, /* groups, perl ref to array */
psbuf.pr_pid, /* pid, pid_t is int */
psbuf.pr_ppid, /* ppid, pid_t is int */
psbuf.pr_pgrp, /* pgrp, pid_t is int */
psbuf.pr_sid, /* sess, pid_t is int */
psbuf.pr_pri, /* priority, long, */
psbuf.pr_ttydev, /* ttynum, dev_t is int */
psbuf.pr_flag, /* flags, u_long */
psbuf.pr_time.tv_sec, /* time, long */
psbuf.pr_size * getpagesize(), /* size (bytes) */
psbuf.pr_rssize * getpagesize(), /* rss (bytes) */
psbuf.pr_start.tv_sec, /* start */
psbuf.pr_fname, /* fname */
pctcpu, /* pctcpu */
state, /* state */
psbuf.pr_psargs /* cmndline */
);
}
}
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