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/* Copyright (C) 1998-99 Martin Baulig
This file is part of LibGTop 1.0.
Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
LibGTop 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.
LibGTop is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with LibGTop; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <config.h>
#include <glibtop/procdata.h>
#include <sys/stat.h>
#define LINUX_VERSION(x,y,z) (0x10000*(x) + 0x100*(y) + z)
#define BIT_SHIFT(x) (1 << (x % 32))
static const unsigned long _glibtop_sysdeps_procdata_0 =
BIT_SHIFT(GLIBTOP_PROCDATA_CMD) +
BIT_SHIFT(GLIBTOP_PROCDATA_STATE) +
BIT_SHIFT(GLIBTOP_PROCDATA_UID) +
BIT_SHIFT(GLIBTOP_PROCDATA_PID) +
BIT_SHIFT(GLIBTOP_PROCDATA_PPID) +
BIT_SHIFT(GLIBTOP_PROCDATA_PGRP) +
BIT_SHIFT(GLIBTOP_PROCDATA_SESSION) +
BIT_SHIFT(GLIBTOP_PROCDATA_TTY) +
BIT_SHIFT(GLIBTOP_PROCDATA_TPGID) +
BIT_SHIFT(GLIBTOP_PROCDATA_PRIORITY) +
BIT_SHIFT(GLIBTOP_PROCDATA_NICE) +
BIT_SHIFT(GLIBTOP_PROCDATA_SIGNAL) +
BIT_SHIFT(GLIBTOP_PROCDATA_BLOCKED) +
BIT_SHIFT(GLIBTOP_PROCDATA_SIGIGNORE) +
BIT_SHIFT(GLIBTOP_PROCDATA_SIGCATCH) +
BIT_SHIFT(GLIBTOP_PROCDATA_START_TIME) +
BIT_SHIFT(GLIBTOP_PROCDATA_UTIME) +
BIT_SHIFT(GLIBTOP_PROCDATA_STIME) +
BIT_SHIFT(GLIBTOP_PROCDATA_CUTIME) +
BIT_SHIFT(GLIBTOP_PROCDATA_CSTIME) +
BIT_SHIFT(GLIBTOP_PROCDATA_SIZE) +
BIT_SHIFT(GLIBTOP_PROCDATA_RESIDENT) +
BIT_SHIFT(GLIBTOP_PROCDATA_SHARE) +
BIT_SHIFT(GLIBTOP_PROCDATA_TRS) +
BIT_SHIFT(GLIBTOP_PROCDATA_LRS) +
BIT_SHIFT(GLIBTOP_PROCDATA_DRS) +
BIT_SHIFT(GLIBTOP_PROCDATA_DT) +
BIT_SHIFT(GLIBTOP_PROCDATA_VSIZE) +
BIT_SHIFT(GLIBTOP_PROCDATA_RSS) +
BIT_SHIFT(GLIBTOP_PROCDATA_RSS_RLIM) +
BIT_SHIFT(GLIBTOP_PROCDATA_TIMEOUT) +
BIT_SHIFT(GLIBTOP_PROCDATA_IT_REAL_VALUE);
static const unsigned long _glibtop_sysdeps_procdata_1 =
BIT_SHIFT(GLIBTOP_PROCDATA_K_FLAGS) +
BIT_SHIFT(GLIBTOP_PROCDATA_MIN_FLT) +
BIT_SHIFT(GLIBTOP_PROCDATA_MAJ_FLT) +
BIT_SHIFT(GLIBTOP_PROCDATA_CMIN_FLT) +
BIT_SHIFT(GLIBTOP_PROCDATA_CMAJ_FLT) +
BIT_SHIFT(GLIBTOP_PROCDATA_START_CODE) +
BIT_SHIFT(GLIBTOP_PROCDATA_END_CODE) +
BIT_SHIFT(GLIBTOP_PROCDATA_START_STACK) +
BIT_SHIFT(GLIBTOP_PROCDATA_KSTK_ESP) +
BIT_SHIFT(GLIBTOP_PROCDATA_KSTK_EIP) +
BIT_SHIFT(GLIBTOP_PROCDATA_WCHAN);
/* Provides detailed information about a process. */
void
glibtop_get_procdata_s (glibtop *server, glibtop_procdata *buf, pid_t pid)
{
char input [BUFSIZ], *tmp;
struct stat statb;
int nread;
FILE *f;
glibtop_init_r (&server, 0, 0);
memset (buf, 0, sizeof (glibtop_procdata));
if (pid == 0) {
/* Client is only interested in the flags. */
buf->flags [0] = _glibtop_sysdeps_procdata_0;
buf->flags [1] = _glibtop_sysdeps_procdata_1;
return;
}
sprintf (input, "/proc/%d/stat", pid);
if (stat (input, &statb)) return;
buf->uid = statb.st_uid;
f = fopen (input, "r");
if (!f) return;
nread = fread (input, 1, BUFSIZ, f);
if (nread < 0) {
fclose (f);
return;
}
input [nread] = 0;
/* This is from guile-utils/gtop/proc/readproc.c */
/* split into "PID (cmd" and "<rest>" */
tmp = strrchr (input, ')');
*tmp = '\0'; /* replace trailing ')' with NUL */
/* parse these two strings separately, skipping the leading "(". */
memset (buf->cmd, 0, sizeof (buf->cmd));
sscanf (input, "%d (%39c", &buf->pid, buf->cmd);
sscanf(tmp + 2, /* skip space after ')' too */
"%c %d %d %d %d %d %lu %lu %lu %lu %lu "
"%ld %ld %ld %ld %d %d %lu %lu %ld %lu "
"%lu %lu %lu %lu %lu %lu %lu %d %d %d %d %lu",
&buf->state, &buf->ppid, &buf->pgrp, &buf->session,
&buf->tty, &buf->tpgid, &buf->k_flags, &buf->min_flt,
&buf->cmin_flt, &buf->maj_flt, &buf->cmaj_flt,
&buf->utime, &buf->stime, &buf->cutime, &buf->cstime,
&buf->priority, &buf->nice, &buf->timeout,
&buf->it_real_value, &buf->start_time, &buf->vsize,
&buf->rss, &buf->rss_rlim, &buf->start_code,
&buf->end_code, &buf->start_stack, &buf->kstk_esp,
&buf->kstk_eip, &buf->signal, &buf->blocked,
&buf->sigignore, &buf->sigcatch, &buf->wchan);
if (buf->tty == 0)
/* the old notty val, update elsewhere bef. moving to 0 */
buf->tty = -1;
if (server->os_version_code < LINUX_VERSION(1,3,39)) {
/* map old meanings to new */
buf->priority = 2*15 - buf->priority;
buf->nice = 15 - buf->nice;
}
if (server->os_version_code < LINUX_VERSION(1,1,30) && buf->tty != -1)
/* when tty wasn't full devno */
buf->tty = 4*0x100 + buf->tty;
fclose (f);
sprintf (input, "/proc/%d/statm", pid);
f = fopen (input, "r");
if (!f) return;
nread = fread (input, 1, BUFSIZ, f);
if (nread < 0) {
fclose (f);
return;
}
input [nread] = 0;
sscanf (input, "%ld %ld %ld %ld %ld %ld %ld",
&buf->size, &buf->resident, &buf->share,
&buf->trs, &buf->lrs, &buf->drs, &buf->dt);
fclose (f);
buf->flags [0] = _glibtop_sysdeps_procdata_0;
buf->flags [1] = _glibtop_sysdeps_procdata_1;
}
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