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procps/ps/output.c

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procps 010114
2002-02-02 04:17:29 +05:30
/*
* Copyright 1999 by Albert Cahalan; all rights resered.
*
* This file may be used subject to the terms and conditions of the
* GNU Library General Public License Version 2, or any later version
* at your option, as published by the Free Software Foundation.
* This program 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 Library General Public License for more details.
*/
/*
* This file is really gross, and I know it. I looked into several
* alternate ways to deal with the mess, and they were all ugly.
*
* FreeBSD has a fancy hack using offsets into a struct -- that
* saves code but it is _really_ gross. See the PO macro below.
*
* We could have a second column width for wide output format.
* For example, Digital prints the real-time signals.
*/
/*
* Data table idea:
*
* table 1 maps aix to specifier
* table 2 maps shortsort to specifier
* table 3 maps macro to specifiers
* table 4 maps specifier to title,datatype,offset,vendor,helptext
* table 5 maps datatype to justification,width,widewidth,sorting,printing
*
* Here, "datatype" could be user,uid,u16,pages,deltaT,signals,tty,longtty...
* It must be enough to determine printing and sorting.
*
* After the tables, increase width as needed to fit the header.
*
* Table 5 could go in a file with the output functions.
*/
/* proc_t offset macro */
#define PO(q) ((unsigned long)(&(((proc_t*)0)->q)))
#include <ctype.h>
#include <fcntl.h>
#include <grp.h>
#include <limits.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/resource.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <time.h>
#include <unistd.h>
#include "../proc/readproc.h"
#include "../proc/sysinfo.h"
#include "../proc/procps.h"
#include "../proc/devname.h"
#include "common.h"
/* TODO:
* Stop assuming system time is local time.
*/
#define COLWID 240 /* satisfy snprintf, which is faster than sprintf */
static char whitespace_and_outbuf[OUTBUF_SIZE + SPACE_AMOUNT + PAGE_SIZE*2];
static char *outbuf = whitespace_and_outbuf+SPACE_AMOUNT;
static char *whitespace = whitespace_and_outbuf;
static unsigned max_rightward = 0x12345678; /* space for RIGHT stuff */
static unsigned max_leftward = 0x12345678; /* space for LEFT stuff */
/* Justification control for flags field. */
#define JUST_MASK 0x0f
/* AIXHACK 0 */
#define USER 1 /* left if text, right if numeric */
#define LEFT 2
#define RIGHT 3
#define UNLIMITED 4
#define WCHAN 5 /* left if text, right if numeric */
#define SIGNAL 6 /* right in 9, or 16 if screen_cols>107 */
#define CUMUL 16 /* mark cumulative (Summed) headers with 'C' */
static int wide_signals; /* true if we have room */
static proc_t *pp; /* the process being printed */
static unsigned long seconds_since_1970;
static unsigned long time_of_boot;
static unsigned long page_shift;
/*************************************************************************/
/************ Lots of sort functions, starting with the NOP **************/
static int sr_nop(const proc_t* a, const proc_t* b){
(void)a;(void)b; /* shut up gcc */
return 0;
}
#define CMP_STR(NAME) \
static int sr_ ## NAME(const proc_t* P, const proc_t* Q) { \
return strcmp(P->NAME, Q->NAME); \
}
#define CMP_INT(NAME) \
static int sr_ ## NAME (const proc_t* P, const proc_t* Q) { \
if (P->NAME < Q->NAME) return -1; \
if (P->NAME > Q->NAME) return 1; \
return 0; \
}
CMP_INT(cutime)
CMP_INT(cstime)
CMP_INT(priority) /* nice */
CMP_INT(timeout)
CMP_INT(nice) /* priority */
CMP_INT(rss) /* resident set size from stat file */ /* vm_rss, resident */
CMP_INT(it_real_value)
CMP_INT(size) /* total pages */ /* vm_size, vsize */
CMP_INT(resident) /* resident pages */ /* vm_rss, rss */
CMP_INT(share) /* shared pages */
CMP_INT(trs) /* executable pages */
CMP_INT(lrs) /* obsolete "library" pages above 0x60000000 */
CMP_INT(drs) /* other pages (assumed data?) */
CMP_INT(dt) /* dirty pages */
CMP_INT(vm_size) /* kB VM */ /* size, vsize */
CMP_INT(vm_lock) /* kB locked */
CMP_INT(vm_rss) /* kB rss */ /* rss, resident */
CMP_INT(vm_data) /* kB "data" == data-stack */
CMP_INT(vm_stack) /* kB stack */
CMP_INT(vm_exe) /* kB "exec" == exec-lib */
CMP_INT(vm_lib) /* kB "libraries" */
CMP_INT(vsize) /* pages VM */ /* size, vm_size */
CMP_INT(rss_rlim)
CMP_INT(flags)
CMP_INT(min_flt)
CMP_INT(maj_flt)
CMP_INT(cmin_flt)
CMP_INT(cmaj_flt)
CMP_INT(nswap)
CMP_INT(cnswap)
CMP_INT(utime)
CMP_INT(stime) /* Old: sort by systime. New: show start time. Uh oh. */
CMP_INT(start_code)
CMP_INT(end_code)
CMP_INT(start_stack)
CMP_INT(kstk_esp)
CMP_INT(kstk_eip)
CMP_INT(start_time)
CMP_INT(wchan)
/* CMP_STR(*environ) */
/* CMP_STR(*cmdline) */
CMP_STR(ruser)
CMP_STR(euser)
CMP_STR(suser)
CMP_STR(fuser)
CMP_STR(rgroup)
CMP_STR(egroup)
CMP_STR(sgroup)
CMP_STR(fgroup)
CMP_STR(cmd)
/* CMP_STR(ttyc) */ /* FIXME -- use strncmp with 8 max */
CMP_INT(ruid)
CMP_INT(rgid)
CMP_INT(euid)
CMP_INT(egid)
CMP_INT(suid)
CMP_INT(sgid)
CMP_INT(fuid)
CMP_INT(fgid)
CMP_INT(pid)
CMP_INT(ppid)
CMP_INT(pgrp)
CMP_INT(session)
CMP_INT(tty)
CMP_INT(tpgid)
CMP_INT(pcpu)
CMP_INT(state)
/***************************************************************************/
/************ Lots of format functions, starting with the NOP **************/
static int pr_nop(void){
return snprintf(outbuf, COLWID, "%c", '-');
}
/********* Unix 98 ************/
/***
Only comm and args are allowed to contain blank characters; all others are
not. Any implementation-dependent variables will be specified in the system
documentation along with the default header and indicating if the field
may contain blank characters.
Some headers do not have a standardized specifier!
%CPU pcpu The % of cpu time used recently, with unspecified "recently".
ADDR The address of the process.
C Processor utilisation for scheduling.
CMD The command name, or everything with -f.
COMMAND args Command + args. May chop as desired. May use either version.
COMMAND comm argv[0]
ELAPSED etime Elapsed time since the process was started. [[dd-]hh:]mm:ss
F Flags (octal and additive)
GROUP group Effective group ID, prefer text over decimal.
NI nice Decimal system scheduling priority, see nice(1).
PGID pgid The decimal value of the process group ID.
PID pid Decimal PID.
PPID ppid Decimal PID.
PRI Priority. Higher numbers mean lower priority.
RGROUP rgroup Real group ID, prefer text over decimal.
RUSER ruser Real user ID, prefer text over decimal.
S The state of the process.
STIME Starting time of the process.
SZ The size in blocks of the core image of the process.
TIME time Cumulative CPU time. [dd-]hh:mm:ss
TT tty Name of tty in format used by who(1).
TTY The controlling terminal for the process.
UID UID, or name when -f
USER user Effective user ID, prefer text over decimal.
VSZ vsz Virtual memory size in decimal kB.
WCHAN Where waiting/sleeping or blank if running.
The nice value is used to compute the priority.
For some undefined ones, Digital does:
F flag Process flags -- but in hex!
PRI pri Process priority
S state Symbolic process status
TTY tt,tty,tname,longtname -- all do "ttyp1", "console", "??"
UID uid Process user ID (effective UID)
WCHAN wchan Address of event on which a
For some undefined ones, Sun does:
ADDR addr memory address of the process
C c Processor utilization for scheduling (obsolete).
CMD
F f
S s state: OSRZT
STIME start time, printed w/o blanks. If 24h old, months & days
SZ size (in pages) of the swappable process's image in main memory
TTY
UID uid
WCHAN wchan
For some undefined ones, SCO does:
ADDR addr Virtual address of the process' entry in the process table.
SZ swappable size in kB of the virtual data and stack
STIME stime hms or md time format
***/
/* Source & destination are known. Return bytes or screen characters? */
static int forest_helper(void){
char *p = forest_prefix;
char *q = outbuf;
if(!*p) return 0;
/* Arrrgh! somebody defined unix as 1 */
if(forest_type == 'u') goto unixy;
while(*p){
switch(*p){
case ' ': strcpy(q, " "); break;
case 'L': strcpy(q, " \\_ "); break;
case '+': strcpy(q, " \\_ "); break;
case '|': strcpy(q, " | "); break;
case '\0': return q-outbuf; /* redundant & not used */
}
q += 4;
p++;
}
return q-outbuf; /* gcc likes this here */
unixy:
while(*p){
switch(*p){
case ' ': strcpy(q, " "); break;
case 'L': strcpy(q, " "); break;
case '+': strcpy(q, " "); break;
case '|': strcpy(q, " "); break;
case '\0': return q-outbuf; /* redundant & not used */
}
q += 2;
p++;
}
return q-outbuf; /* gcc likes this here */
}
/* XPG4-UNIX, according to Digital:
The "args" and "command" specifiers show what was passed to the command.
Modifications to the arguments are not shown.
*/
/*
* pp->cmd short accounting name (comm & ucomm)
* pp->cmdline long name with args (args & command)
* pp->environ environment
*/
/* "command" is the same thing: long unless c */
static int pr_args(void){
char *endp;
endp = outbuf + forest_helper();
if(bsd_c_option){
endp += escape_str(endp, pp->cmd, PAGE_SIZE); /* short version */
}else{
const char **lc = (const char**)pp->cmdline; /* long version */
if(lc && *lc) {
endp += escape_strlist(endp, lc, OUTBUF_SIZE);
} else {
char buf[ESC_STRETCH*PAGE_SIZE]; /* TODO: avoid copy */
escape_str(buf, pp->cmd, ESC_STRETCH*PAGE_SIZE);
endp += snprintf(endp, COLWID, "[%s]", buf);
}
}
if(bsd_e_option){
const char **env = (const char**)pp->environ;
if(env && *env){
*endp++ = ' ';
endp += escape_strlist(endp, env, OUTBUF_SIZE);
}
}
return endp - outbuf;
}
/* "ucomm" is the same thing: short unless -f */
static int pr_comm(void){
char *endp;
endp = outbuf + forest_helper();
if(!unix_f_option){ /* does -f matter? */
endp += escape_str(endp, pp->cmd, PAGE_SIZE); /* short version */
}else{
const char **lc = (const char**)pp->cmdline; /* long version */
if(lc && *lc) {
endp += escape_strlist(endp, lc, OUTBUF_SIZE);
} else {
char buf[ESC_STRETCH*PAGE_SIZE]; /* TODO: avoid copy */
escape_str(buf, pp->cmd, ESC_STRETCH*PAGE_SIZE);
endp += snprintf(endp, COLWID, "[%s]", buf);
}
}
if(bsd_e_option){
const char **env = (const char**)pp->environ;
if(env && *env){
*endp++ = ' ';
endp += escape_strlist(endp, env, OUTBUF_SIZE);
}
}
return endp - outbuf;
}
/* Non-standard, from SunOS 5 */
static int pr_fname(void){
char *endp;
endp = outbuf + forest_helper();
endp += escape_str(endp, pp->cmd, 8);
return endp - outbuf;
}
/* elapsed wall clock time, [[dd-]hh:]mm:ss format (not same as "time") */
static int pr_etime(void){
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unsigned long long t;
unsigned dd,hh,mm,ss;
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char *cp = outbuf;
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t = seconds_since_boot - pp->start_time / Hertz;
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ss = t%60;
t /= 60;
mm = t%60;
t /= 60;
hh = t%24;
t /= 24;
dd = t;
cp +=( dd ? snprintf(cp, COLWID, "%u-", dd) : 0 );
cp +=( (dd || hh) ? snprintf(cp, COLWID, "%02u:", hh) : 0 );
cp += snprintf(cp, COLWID, "%02u:%02u", mm, ss) ;
return (int)(cp-outbuf);
}
static int pr_nice(void){
return snprintf(outbuf, COLWID, "%ld", pp->nice);
}
/* "Processor utilisation for scheduling." --- we use %cpu w/o fraction */
static int pr_c(void){
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unsigned long long total_time; /* jiffies used by this process */
unsigned pcpu = 0; /* scaled %cpu, 999 means 99.9% */
unsigned long long seconds; /* seconds of process life */
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total_time = pp->utime + pp->stime;
if(include_dead_children) total_time += (pp->cutime + pp->cstime);
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seconds = seconds_since_boot - pp->start_time / Hertz;
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if(seconds) pcpu = (total_time * 100ULL / Hertz) / seconds;
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if (pcpu > 99U) pcpu = 99U;
return snprintf(outbuf, COLWID, "%2u", pcpu);
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}
/* normal %CPU in ##.# format. */
static int pr_pcpu(void){
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unsigned long long total_time; /* jiffies used by this process */
unsigned pcpu = 0; /* scaled %cpu, 999 means 99.9% */
unsigned long long seconds; /* seconds of process life */
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total_time = pp->utime + pp->stime;
if(include_dead_children) total_time += (pp->cutime + pp->cstime);
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seconds = seconds_since_boot - pp->start_time / Hertz;
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if(seconds) pcpu = (total_time * 1000ULL / Hertz) / seconds;
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if (pcpu > 999U) pcpu = 999U;
return snprintf(outbuf, COLWID, "%2u.%u", pcpu/10U, pcpu%10U);
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}
/* this is a "per-mill" format, like %cpu with no decimal point */
static int pr_cp(void){
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unsigned long long total_time; /* jiffies used by this process */
unsigned pcpu = 0; /* scaled %cpu, 999 means 99.9% */
unsigned long long seconds; /* seconds of process life */
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total_time = pp->utime + pp->stime;
if(include_dead_children) total_time += (pp->cutime + pp->cstime);
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seconds = seconds_since_boot - pp->start_time / Hertz ;
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if(seconds) pcpu = (total_time * 1000ULL / Hertz) / seconds;
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if (pcpu > 999U) pcpu = 999U;
return snprintf(outbuf, COLWID, "%3u", pcpu);
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}
static int pr_pgid(void){
return snprintf(outbuf, COLWID, "%u", pp->pgrp);
}
static int pr_pid(void){
return snprintf(outbuf, COLWID, "%u", pp->pid);
}
static int pr_ppid(void){
return snprintf(outbuf, COLWID, "%u", pp->ppid);
}
/* cumulative CPU time, [dd-]hh:mm:ss format (not same as "etime") */
static int pr_time(void){
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unsigned long long t;
unsigned dd,hh,mm,ss;
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int c;
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t = (pp->utime + pp->stime) / Hertz;
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ss = t%60;
t /= 60;
mm = t%60;
t /= 60;
hh = t%24;
t /= 24;
dd = t;
c =( dd ? snprintf(outbuf, COLWID, "%u-", dd) : 0 );
c +=( snprintf(outbuf+c, COLWID, "%02u:%02u:%02u", hh, mm, ss) );
return c;
}
/* HP-UX puts this (I forget, vsz or vsize?) in kB and uses "sz" for pages.
* Unix98 requires "vsz" to be kB.
* Tru64 does both vsize and vsz like "1.23M"
*
* Our pp->vm_size is kB and our pp->vsize is pages.
*
* TODO: add flag for "1.23M" behavior, on this and other columns.
*/
static int pr_vsz(void){
return snprintf(outbuf, COLWID, "%lu", pp->vm_size);
}
/*
* internal terms: ruid euid suid fuid
* kernel vars: uid euid suid fsuid
* command args: ruid uid svuid n/a
*/
static int pr_ruser(void){
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int width = COLWID;
if(user_is_number)
return snprintf(outbuf, COLWID, "%d", pp->ruid);
if (strlen(pp->ruser)>max_rightward)
width = max_rightward;
return snprintf(outbuf, width, "%s", pp->ruser);
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}
static int pr_egroup(void){
if(strlen(pp->egroup)>max_rightward) return snprintf(outbuf, COLWID, "%d", pp->egid);
return snprintf(outbuf, COLWID, "%s", pp->egroup);
}
static int pr_rgroup(void){
if(strlen(pp->rgroup)>max_rightward) return snprintf(outbuf, COLWID, "%d", pp->rgid);
return snprintf(outbuf, COLWID, "%s", pp->rgroup);
}
static int pr_euser(void){
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int width = COLWID;
if(user_is_number)
return snprintf(outbuf, COLWID, "%d", pp->euid);
if (strlen(pp->euser)>max_rightward)
width = max_rightward;
return snprintf(outbuf, width, "%s", pp->euser);
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}
/********* maybe standard (Unix98 only defines the header) **********/
/*
* "PRI" is created by "opri", or by "pri" when -c is used.
*
* Unix98 only specifies that a high "PRI" is low priority.
* Sun and SCO add the -c behavior. Sun defines "pri" and "opri".
* Linux may use "priority" for historical purposes.
*/
static int pr_priority(void){ /* -20..20 */
return snprintf(outbuf, COLWID, "%ld", pp->priority);
}
static int pr_pri(void){ /* 20..60 */
return snprintf(outbuf, COLWID, "%ld", 39 - pp->priority);
}
static int pr_opri(void){ /* 39..79 */
return snprintf(outbuf, COLWID, "%ld", 60 + pp->priority);
}
static int pr_wchan(void){
/*
* Unix98 says "blank if running" and also "no blanks"! :-(
* Unix98 also says to use '-' if something is meaningless.
* Digital uses both '*' and '-', with undocumented differences.
* (the '*' for -1 (rare) and the '-' for 0)
* Sun claims to use a blank AND use '-', in the same man page.
* Perhaps "blank" should mean '-'.
*
* AIX uses '-' for running processes, the location when there is
* only one thread waiting in the kernel, and '*' when there is
* more than one thread waiting in the kernel.
*/
if(!(pp->wchan & 0xffffff)) return snprintf(outbuf, COLWID, "%s", "-");
if(wchan_is_number) return snprintf(outbuf, COLWID, "%lx", pp->wchan & 0xffffff);
return snprintf(outbuf, COLWID, "%s", wchan(pp->wchan));
}
/* Terrible trunctuation, like BSD crap uses: I999 J999 K999 */
/* FIXME: disambiguate /dev/tty69 and /dev/pts/69. */
static int pr_tty4(void){
/* snprintf(outbuf, COLWID, "%02x:%02x", pp->tty>>8, pp->tty&0xff); */
return dev_to_tty(outbuf, 4, pp->tty, pp->pid, ABBREV_DEV|ABBREV_TTY|ABBREV_PTS);
}
/* Unix98: format is unspecified, but must match that used by who(1). */
static int pr_tty8(void){
/* snprintf(outbuf, COLWID, "%02x:%02x", pp->tty>>8, pp->tty&0xff); */
return dev_to_tty(outbuf, PAGE_SIZE-1, pp->tty, pp->pid, ABBREV_DEV);
}
#if 0
/* This BSD state display may contain spaces, which is illegal. */
static int pr_oldstate(void){
return snprintf(outbuf, COLWID, "%s", status(pp));
}
#endif
/* This state display is Unix98 compliant and has lots of info like BSD. */
static int pr_stat(void){
int end = 0;
outbuf[end++] = pp->state;
if(pp->rss == 0 && pp->state != 'Z') outbuf[end++] = 'W';
if(pp->nice < 0) outbuf[end++] = '<';
if(pp->nice > 0) outbuf[end++] = 'N';
if(pp->vm_lock) outbuf[end++] = 'L';
outbuf[end] = '\0';
return end;
}
/* This minimal state display is Unix98 compliant, like SCO and SunOS 5 */
static int pr_s(void){
outbuf[0] = pp->state;
outbuf[1] = '\0';
return 1;
}
static int pr_flag(void){
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/* Unix98 requires octal flags */
/* this user-hostile and volatile junk gets 1 character */
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return snprintf(outbuf, COLWID, "%o", (unsigned)(pp->flags>>6U)&0x7U);
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}
static int pr_euid(void){
return snprintf(outbuf, COLWID, "%d", pp->euid);
}
/*********** non-standard ***********/
/*** BSD
sess session pointer
(SCO has:Process session leader ID as a decimal value. (SESSION))
jobc job control count
cpu short-term cpu usage factor (for scheduling)
sl sleep time (in seconds; 127 = infinity)
re core residency time (in seconds; 127 = infinity)
pagein pageins (same as majflt)
lim soft memory limit
tsiz text size (in Kbytes)
***/
static int pr_stackp(void){
return snprintf(outbuf, COLWID, "%08lx", pp->start_stack);
}
static int pr_esp(void){
return snprintf(outbuf, COLWID, "%08lx", pp->kstk_esp);
}
static int pr_eip(void){
return snprintf(outbuf, COLWID, "%08lx", pp->kstk_eip);
}
/* This function helps print old-style time formats */
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static int old_time_helper(char *dst, unsigned long long t, unsigned long long rel) {
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if(!t) return snprintf(dst, COLWID, " -");
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if(t == ~0ULL) return snprintf(dst, COLWID, " xx");
if((long long)(t-=rel) < 0) t=0ULL;
if(t>9999ULL) return snprintf(dst, COLWID, "%5Lu", t/100ULL);
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else return snprintf(dst, COLWID, "%2u.%02u", (unsigned)t/100U, (unsigned)t%100U);
procps 010114
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}
static int pr_bsdtime(void){
64-bit time for Linux 2.5.xx
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unsigned long long t;
unsigned u;
procps 010114
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t = pp->utime + pp->stime;
if(include_dead_children) t += (pp->cutime + pp->cstime);
64-bit time for Linux 2.5.xx
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u = t / Hertz;
return snprintf(outbuf, COLWID, "%3u:%02u", u/60U, u%60U);
procps 010114
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}
static int pr_bsdstart(void){
time_t start;
time_t seconds_ago;
64-bit time for Linux 2.5.xx
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start = time_of_boot + pp->start_time / Hertz;
procps 010114
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seconds_ago = seconds_since_1970 - start;
if(seconds_ago < 0) seconds_ago=0;
if(seconds_ago > 3600*24) strcpy(outbuf, ctime(&start)+4);
else strcpy(outbuf, ctime(&start)+10);
outbuf[6] = '\0';
return 6;
}
static int pr_timeout(void){
return old_time_helper(outbuf, pp->timeout, seconds_since_boot*Hertz);
}
static int pr_alarm(void){
64-bit time for Linux 2.5.xx
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return old_time_helper(outbuf, pp->it_real_value, 0ULL);
procps 010114
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}
/* HP-UX puts this in pages and uses "vsz" for kB */
static int pr_sz(void){
return snprintf(outbuf, COLWID, "%lu", (pp->vm_size)/(PAGE_SIZE/1024));
}
/*
* FIXME: trs,drs,tsiz,dsiz,m_trs,m_drs,vm_exe,vm_data,trss
* I suspect some/all of those are broken. They seem to have been
* inherited by Linux and AIX from early BSD systems. FreeBSD only
* retains tsiz. The prefixed versions come from Debian.
* Sun and Digital have none of this crap. The code here comes
* from an old Linux ps, and might not be correct for ELF executables.
*
* AIX TRS size of resident-set (real memory) of text
* AIX TSIZ size of text (shared-program) image
* FreeBSD tsiz text size (in Kbytes)
* 4.3BSD NET/2 trss text resident set size (in Kbytes)
* 4.3BSD NET/2 tsiz text size (in Kbytes)
*/
/* kB data size. See drs, tsiz & trs. */
static int pr_dsiz(void){
long dsiz = 0;
if(pp->vsize) dsiz += (pp->vsize - pp->end_code + pp->start_code) >> 10;
return snprintf(outbuf, COLWID, "%ld", dsiz);
}
/* kB text (code) size. See trs, dsiz & drs. */
static int pr_tsiz(void){
long tsiz = 0;
if(pp->vsize) tsiz += (pp->end_code - pp->start_code) >> 10;
return snprintf(outbuf, COLWID, "%ld", tsiz);
}
/* kB _resident_ data size. See dsiz, tsiz & trs. */
static int pr_drs(void){
long drs = 0;
if(pp->vsize) drs += (pp->vsize - pp->end_code + pp->start_code) >> 10;
return snprintf(outbuf, COLWID, "%ld", drs);
}
/* kB text _resident_ (code) size. See tsiz, dsiz & drs. */
static int pr_trs(void){
long trs = 0;
if(pp->vsize) trs += (pp->end_code - pp->start_code) >> 10;
return snprintf(outbuf, COLWID, "%ld", trs);
}
static int pr_minflt(void){
long flt = pp->min_flt;
if(include_dead_children) flt += pp->cmin_flt;
return snprintf(outbuf, COLWID, "%ld", flt);
}
static int pr_majflt(void){
long flt = pp->maj_flt;
if(include_dead_children) flt += pp->cmaj_flt;
return snprintf(outbuf, COLWID, "%ld", flt);
}
static int pr_lim(void){
if(pp->rss_rlim == RLIM_INFINITY) return snprintf(outbuf, COLWID, "%s", "xx");
return snprintf(outbuf, COLWID, "%5ld", pp->rss_rlim >> 10);
}
/* should print leading tilde ('~') if process is bound to the CPU */
static int pr_psr(void){
return snprintf(outbuf, COLWID, "%d", pp->processor);
}
static int pr_wname(void){
/* SGI's IRIX always uses a number for "wchan", so "wname" is provided too.
*
* We use '-' for running processes, the location when there is
* only one thread waiting in the kernel, and '*' when there is
* more than one thread waiting in the kernel.
*/
if(!(pp->wchan & 0xffffff)) return snprintf(outbuf, COLWID, "%s", "-");
return snprintf(outbuf, COLWID, "%s", wchan(pp->wchan));
}
static int pr_nwchan(void){
if(!(pp->wchan & 0xffffff)) return snprintf(outbuf, COLWID, "-");
return snprintf(outbuf, COLWID, "%lx", pp->wchan & 0xffffff);
}
static int pr_rss(void){
return snprintf(outbuf, COLWID, "%lu", pp->vm_rss);
}
/* pp->vm_rss * 1000 would overflow on 32-bit systems with 64 GB memory */
static int pr_pmem(void){
unsigned long pmem = 0;
pmem = pp->vm_rss * 1000ULL / kb_main_total;
if (pmem > 999) pmem = 999;
return snprintf(outbuf, COLWID, "%2u.%u", (unsigned)(pmem/10), (unsigned)(pmem%10));
}
static int pr_lstart(void){
time_t t;
64-bit time for Linux 2.5.xx
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t = time_of_boot + pp->start_time / Hertz;
procps 010114
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return snprintf(outbuf, COLWID, "%24.24s", ctime(&t));
}
/* Unix98 specifies a STIME header for a column that shows the start
* time of the process, but does not specify a format or format specifier.
* From the general Unix98 rules, we know there must not be any spaces.
* Most systems violate that rule, though the Solaris documentation
* claims to print the column without spaces. (NOT!)
*
* So this isn't broken, but could be renamed to u98_std_stime,
* as long as it still shows as STIME when using the -f option.
*/
static int pr_stime(void){
struct tm *proc_time;
struct tm *our_time;
time_t t;
char *fmt;
int tm_year;
int tm_yday;
our_time = localtime(&seconds_since_1970); /* not reentrant */
tm_year = our_time->tm_year;
tm_yday = our_time->tm_yday;
64-bit time for Linux 2.5.xx
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t = time_of_boot + pp->start_time / Hertz;
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proc_time = localtime(&t); /* not reentrant, this corrupts our_time */
fmt = "%H:%M"; /* 03:02 23:59 */
if(tm_yday != proc_time->tm_yday) fmt = "%b%d"; /* Jun06 Aug27 */
if(tm_year != proc_time->tm_year) fmt = "%Y"; /* 1991 2001 */
return strftime(outbuf, 42, fmt, proc_time);
}
static int pr_start(void){
time_t t;
char *str;
64-bit time for Linux 2.5.xx
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t = time_of_boot + pp->start_time / Hertz;
procps 010114
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str = ctime(&t);
if(str[8]==' ') str[8]='0';
if(str[11]==' ') str[11]='0';
if((unsigned long)t+60*60*24 > seconds_since_1970)
return snprintf(outbuf, COLWID, "%8.8s", str+11);
return snprintf(outbuf, COLWID, " %6.6s", str+4);
}
#ifdef SIGNAL_STRING
static int help_pr_sig(const char *sig){
long len = 0;
len = strlen(sig);
if(wide_signals){
if(len>8) return snprintf(outbuf, COLWID, "%s", sig);
return snprintf(outbuf, COLWID, "00000000%s", sig);
}
if(len-strspn(sig,"0") > 8)
return snprintf(outbuf, COLWID, "<%s", sig+len-8);
return snprintf(outbuf, COLWID, "%s", sig+len-8);
}
#else
static int help_pr_sig(unsigned long long sig){
if(wide_signals) return snprintf(outbuf, COLWID, "%016Lx", sig);
if(sig>>32) return snprintf(outbuf, COLWID, "<%08Lx", sig&0xffffffffLL);
return snprintf(outbuf, COLWID, "%08Lx", sig&0xffffffffLL);
}
#endif
static int pr_sig(void){
return help_pr_sig(pp->signal);
}
static int pr_sigmask(void){
return help_pr_sig(pp->blocked);
}
static int pr_sigignore(void){
return help_pr_sig(pp->sigignore);
}
static int pr_sigcatch(void){
return help_pr_sig(pp->sigcatch);
}
static int pr_egid(void){
return snprintf(outbuf, COLWID, "%d", pp->egid);
}
static int pr_rgid(void){
return snprintf(outbuf, COLWID, "%d", pp->rgid);
}
static int pr_sgid(void){
return snprintf(outbuf, COLWID, "%d", pp->sgid);
}
static int pr_fgid(void){
return snprintf(outbuf, COLWID, "%d", pp->fgid);
}
static int pr_ruid(void){
return snprintf(outbuf, COLWID, "%d", pp->ruid);
}
static int pr_suid(void){
return snprintf(outbuf, COLWID, "%d", pp->suid);
}
static int pr_fuid(void){
return snprintf(outbuf, COLWID, "%d", pp->fuid);
}
static int pr_fgroup(void){
if(strlen(pp->fgroup)>max_rightward) return snprintf(outbuf, COLWID, "%d", pp->fgid);
return snprintf(outbuf, COLWID, "%s", pp->fgroup);
}
static int pr_sgroup(void){
if(strlen(pp->sgroup)>max_rightward) return snprintf(outbuf, COLWID, "%d", pp->sgid);
return snprintf(outbuf, COLWID, "%s", pp->sgroup);
}
static int pr_fuser(void){
64-bit time for Linux 2.5.xx
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int width = COLWID;
if(user_is_number)
return snprintf(outbuf, COLWID, "%d", pp->fuid);
if (strlen(pp->fuser)>max_rightward)
width = max_rightward;
return snprintf(outbuf, width, "%s", pp->fuser);
procps 010114
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}
static int pr_suser(void){
64-bit time for Linux 2.5.xx
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int width = COLWID;
if(user_is_number)
return snprintf(outbuf, COLWID, "%d", pp->suid);
if (strlen(pp->suser)>max_rightward)
width = max_rightward;
return snprintf(outbuf, width, "%s", pp->suser);
procps 010114
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}
static int pr_thread(void){ /* TID tid LWP lwp SPID spid */
return snprintf(outbuf, COLWID, "%u", pp->pid); /* for now... FIXME */
}
static int pr_nlwp(void){ /* THCNT thcount NLWP nlwp */
return snprintf(outbuf, COLWID, "-"); /* for now... FIXME */
}
static int pr_sess(void){
return snprintf(outbuf, COLWID, "%u", pp->session);
}
static int pr_tpgid(void){
return snprintf(outbuf, COLWID, "%d", pp->tpgid);
}
/* SGI uses "cpu" to print the processor ID with header "P" */
static int pr_sgi_p(void){ /* FIXME */
if(pp->state == 'R') return snprintf(outbuf, COLWID, "%d", pp->processor);
return snprintf(outbuf, COLWID, "*");
}
/***************************************************************************/
/*************************** other stuff ***********************************/
/*
* Old header specifications.
*
* short Up " PID TTY STAT TIME COMMAND"
* long l Pp " FLAGS UID PID PPID PRI NI SIZE RSS WCHAN STA TTY TIME COMMAND
* user u up "USER PID %CPU %MEM SIZE RSS TTY STAT START TIME COMMAND
* jobs j gPp " PPID PID PGID SID TTY TPGID STAT UID TIME COMMAND
* sig s p " UID PID SIGNAL BLOCKED IGNORED CATCHED STAT TTY TIME COMMAND
* vm v r " PID TTY STAT TIME PAGEIN TSIZ DSIZ RSS LIM %MEM COMMAND
* m m r " PID TTY MAJFLT MINFLT TRS DRS SIZE SWAP RSS SHRD LIB DT COMMAND
* regs X p "NR PID STACK ESP EIP TMOUT ALARM STAT TTY TIME COMMAND
*/
/*
* Unix98 requires that the heading for tty is TT, though XPG4, Digital,
* and BSD use TTY. The Unix98 headers are:
* args,comm,etime,group,nice,pcpu,pgid
* pid,ppid,rgroup,ruser,time,tty,user,vsz
*
* BSD c: "command" becomes accounting name ("comm" or "ucomm")
* BSD n: "user" becomes "uid" and "wchan" becomes "nwchan" (number)
*/
/* short names to save space */
#define MEM PROC_FILLMEM /* read statm */
#define CMD PROC_FILLCMD /* read cmdline */
#define ENV PROC_FILLENV /* read environ */
#define USR PROC_FILLUSR /* uid_t and gid_t -> user and group names */
#define BUG PROC_FILLBUG /* what does this need? */
/* TODO
* pull out annoying BSD aliases into another table (to macro table?)
* add sorting functions here (to unify names)
*/
/* temporary hack -- mark new stuff grabbed from Debian ps */
#define LNx LNX
/* there are about 195 listed */
/* Many of these are placeholders for unsupported options. */
static const format_struct format_array[] = {
/* code header print() sort() width ? vendor flags */
{"%cpu", "%CPU", pr_pcpu, sr_pcpu, 4, 0, BSD, RIGHT}, /*pcpu*/
{"%mem", "%MEM", pr_pmem, sr_nop, 4, 0, BSD, RIGHT}, /*pmem*/
{"acflag", "ACFLG", pr_nop, sr_nop, 5, 0, XXX, RIGHT}, /*acflg*/
{"acflg", "ACFLG", pr_nop, sr_nop, 5, 0, BSD, RIGHT}, /*acflag*/
{"addr", "ADDR", pr_nop, sr_nop, 4, 0, XXX, RIGHT},
{"addr_1", "ADDR", pr_nop, sr_nop, 1, 0, LNX, LEFT},
{"alarm", "ALARM", pr_alarm, sr_it_real_value, 5, 0, LNX, RIGHT},
{"argc", "ARGC", pr_nop, sr_nop, 4, 0, LNX, RIGHT},
{"args", "COMMAND", pr_args, sr_nop, 16, 0, U98, UNLIMITED}, /*command*/
{"atime", "TIME", pr_time, sr_nop, 8, 0, SOE, CUMUL|RIGHT}, /*cputime*/ /* was 6 wide */
{"blocked", "BLOCKED", pr_sigmask, sr_nop, 9, 0, BSD, SIGNAL}, /*sigmask*/
{"bnd", "BND", pr_nop, sr_nop, 1, 0, AIX, RIGHT},
{"bsdstart", "START", pr_bsdstart, sr_nop, 6, 0, LNX, RIGHT},
{"bsdtime", "TIME", pr_bsdtime, sr_nop, 6, 0, LNX, RIGHT},
{"c", "C", pr_c, sr_pcpu, 2, 0, SUN, RIGHT},
{"caught", "CAUGHT", pr_sigcatch, sr_nop, 9, 0, BSD, SIGNAL}, /*sigcatch*/
{"class", "CLS", pr_nop, sr_nop, 5, 0, XXX, RIGHT},
{"cls", "-", pr_nop, sr_nop, 1, 0, HPU, RIGHT},
{"cmaj_flt", "-", pr_nop, sr_cmaj_flt, 1, 0, LNX, RIGHT},
{"cmd", "CMD", pr_args, sr_cmd, 16, 0, DEC, UNLIMITED}, /*ucomm*/
{"cmin_flt", "-", pr_nop, sr_cmin_flt, 1, 0, LNX, RIGHT},
{"cnswap", "-", pr_nop, sr_cnswap, 1, 0, LNX, RIGHT},
{"comm", "COMMAND", pr_comm, sr_nop, 16, 0, U98, UNLIMITED}, /*ucomm*/
{"command", "COMMAND", pr_args, sr_nop, 16, 0, XXX, UNLIMITED}, /*args*/
{"cp", "CP", pr_cp, sr_pcpu, 3, 0, DEC, RIGHT}, /*cpu*/
{"cpu", "CPU", pr_nop, sr_nop, 3, 0, BSD, RIGHT}, /* FIXME ... HP-UX wants this as the CPU number for SMP? */
{"cputime", "TIME", pr_time, sr_nop, 8, 0, DEC, RIGHT}, /*time*/
{"cstime", "-", pr_nop, sr_cstime, 1, 0, LNX, RIGHT},
{"cursig", "CURSIG", pr_nop, sr_nop, 6, 0, DEC, RIGHT},
{"cutime", "-", pr_nop, sr_cutime, 1, 0, LNX, RIGHT},
{"cwd", "CWD", pr_nop, sr_nop, 3, 0, LNX, LEFT},
{"drs", "DRS", pr_drs, sr_drs, 4, 0, LNX, RIGHT},
{"dsiz", "DSIZ", pr_dsiz, sr_nop, 4, 0, LNX, RIGHT},
{"egid", "EGID", pr_egid, sr_egid, 5, 0, LNX, RIGHT},
{"egroup", "EGROUP", pr_egroup, sr_egroup, 8, 0, LNX, USER},
{"eip", "EIP", pr_eip, sr_kstk_eip, 8, 0, LNX, RIGHT},
{"end_code", "E_CODE", pr_nop, sr_end_code, 8, 0, LNx, RIGHT},
{"environ","ENVIRONMENT",pr_nop, sr_nop, 11, 0, LNx, UNLIMITED},
{"esp", "ESP", pr_esp, sr_kstk_esp, 8, 0, LNX, RIGHT},
{"etime", "ELAPSED", pr_etime, sr_nop, 11, 0, U98, RIGHT}, /* was 7 wide */
{"euid", "EUID", pr_euid, sr_euid, 5, 0, LNX, RIGHT},
{"euser", "EUSER", pr_euser, sr_euser, 8, 0, LNX, USER},
shrink F to one column
2002-05-28 09:59:12 +05:30
{"f", "F", pr_flag, sr_nop, 1, 0, XXX, RIGHT}, /*flags*/
procps 010114
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{"fgid", "FGID", pr_fgid, sr_fgid, 5, 0, LNX, RIGHT},
{"fgroup", "FGROUP", pr_fgroup, sr_fgroup, 8, 0, LNX, USER},
shrink F to one column
2002-05-28 09:59:12 +05:30
{"flag", "F", pr_flag, sr_flags, 1, 0, DEC, RIGHT},
{"flags", "F", pr_flag, sr_flags, 1, 0, BSD, RIGHT}, /*f*/ /* was FLAGS, 8 wide */
procps 010114
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{"fname", "COMMAND", pr_fname, sr_nop, 8, 0, SUN, LEFT},
{"fsgid", "FSGID", pr_fgid, sr_fgid, 5, 0, LNX, RIGHT},
{"fsgroup", "FSGROUP", pr_fgroup, sr_fgroup, 8, 0, LNX, USER},
{"fsuid", "FSUID", pr_fuid, sr_fuid, 5, 0, LNX, RIGHT},
{"fsuser", "FSUSER", pr_fuser, sr_fuser, 8, 0, LNX, USER},
{"fuid", "FUID", pr_fuid, sr_fuid, 5, 0, LNX, RIGHT},
{"fuser", "FUSER", pr_fuser, sr_fuser, 8, 0, LNX, USER},
{"gid", "GID", pr_egid, sr_egid, 5, 0, SUN, RIGHT},
{"group", "GROUP", pr_egroup, sr_egroup, 5, 0, U98, USER}, /* was 8 wide */
{"ignored", "IGNORED", pr_sigignore,sr_nop, 9, 0, BSD, SIGNAL}, /*sigignore*/
{"inblk", "INBLK", pr_nop, sr_nop, 5, 0, BSD, RIGHT}, /*inblock*/
{"inblock", "INBLK", pr_nop, sr_nop, 5, 0, DEC, RIGHT}, /*inblk*/
{"intpri", "PRI", pr_opri, sr_priority, 3, 0, HPU, RIGHT},
{"jobc", "JOBC", pr_nop, sr_nop, 4, 0, XXX, RIGHT},
{"ktrace", "KTRACE", pr_nop, sr_nop, 8, 0, BSD, RIGHT},
{"ktracep", "KTRACEP", pr_nop, sr_nop, 8, 0, BSD, RIGHT},
{"label", "LABEL", pr_nop, sr_nop, 25, 0, SGI, LEFT},
{"lim", "LIM", pr_lim, sr_rss_rlim, 5, 0, BSD, RIGHT},
{"login", "LOGNAME", pr_nop, sr_nop, 8, 0, BSD, LEFT}, /*logname*/ /* double check */
{"logname", "LOGNAME", pr_nop, sr_nop, 8, 0, XXX, LEFT}, /*login*/
{"longtname", "TTY", pr_tty8, sr_tty, 8, 0, DEC, LEFT},
{"lstart", "STARTED", pr_lstart, sr_nop, 24, 0, XXX, RIGHT},
{"luid", "LUID", pr_nop, sr_nop, 5, 0, LNX, RIGHT}, /* login ID */
{"luser", "LUSER", pr_nop, sr_nop, 8, 0, LNX, USER}, /* login USER */
{"lwp", "LWP", pr_thread, sr_nop, 5, 0, SUN, RIGHT},
{"m_drs", "DRS", pr_drs, sr_drs, 5, 0, LNx, RIGHT},
{"m_dt", "DT", pr_nop, sr_dt, 4, 0, LNx, RIGHT},
{"m_lrs", "LRS", pr_nop, sr_lrs, 5, 0, LNx, RIGHT},
{"m_resident", "RES", pr_nop, sr_resident, 5, 0, LNx, RIGHT},
{"m_share", "SHRD", pr_nop, sr_share, 5, 0, LNx, RIGHT},
{"m_size", "SIZE", pr_nop, sr_size, 5, 0, LNx, RIGHT},
{"m_swap", "SWAP", pr_nop, sr_nop, 5, 0, LNx, RIGHT},
{"m_trs", "TRS", pr_trs, sr_trs, 5, 0, LNx, RIGHT},
{"maj_flt", "MAJFL", pr_majflt, sr_maj_flt, 6, 0, LNX, CUMUL|RIGHT},
{"majflt", "MAJFLT", pr_majflt, sr_maj_flt, 6, 0, XXX, RIGHT},
{"min_flt", "MINFL", pr_minflt, sr_min_flt, 6, 0, LNX, CUMUL|RIGHT},
{"minflt", "MINFLT", pr_minflt, sr_min_flt, 6, 0, XXX, RIGHT},
{"msgrcv", "MSGRCV", pr_nop, sr_nop, 6, 0, XXX, RIGHT},
{"msgsnd", "MSGSND", pr_nop, sr_nop, 6, 0, XXX, RIGHT},
{"ni", "NI", pr_nice, sr_nice, 3, 0, BSD, RIGHT}, /*nice*/
{"nice", "NI", pr_nice, sr_nice, 3, 0, U98, RIGHT}, /*ni*/
{"nivcsw", "IVCSW", pr_nop, sr_nop, 5, 0, XXX, RIGHT},
{"nlwp", "NLWP", pr_nlwp, sr_nop, 4, 0, SUN, RIGHT},
{"nsignals", "NSIGS", pr_nop, sr_nop, 5, 0, DEC, RIGHT}, /*nsigs*/
{"nsigs", "NSIGS", pr_nop, sr_nop, 5, 0, BSD, RIGHT}, /*nsignals*/
{"nswap", "NSWAP", pr_nop, sr_nswap, 5, 0, XXX, RIGHT},
{"nvcsw", "VCSW", pr_nop, sr_nop, 5, 0, XXX, RIGHT},
{"nwchan", "WCHAN", pr_nwchan, sr_nop, 6, 0, XXX, RIGHT},
{"opri", "PRI", pr_opri, sr_priority, 3, 0, SUN, RIGHT},
{"osz", "SZ", pr_nop, sr_nop, 2, 0, SUN, RIGHT},
{"oublk", "OUBLK", pr_nop, sr_nop, 5, 0, BSD, RIGHT}, /*oublock*/
{"oublock", "OUBLK", pr_nop, sr_nop, 5, 0, DEC, RIGHT}, /*oublk*/
{"p_ru", "P_RU", pr_nop, sr_nop, 6, 0, BSD, RIGHT},
{"paddr", "PADDR", pr_nop, sr_nop, 6, 0, BSD, RIGHT},
{"pagein", "PAGEIN", pr_majflt, sr_nop, 6, 0, XXX, RIGHT},
{"pcpu", "%CPU", pr_pcpu, sr_pcpu, 4, 0, U98, RIGHT}, /*%cpu*/
{"pending", "PENDING", pr_sig, sr_nop, 9, 0, BSD, SIGNAL}, /*sig*/
{"pgid", "PGID", pr_pgid, sr_pgrp, 5, 0, U98, RIGHT},
{"pgrp", "PGRP", pr_pgid, sr_pgrp, 5, 0, LNX, RIGHT},
{"pid", "PID", pr_pid, sr_pid, 5, 0, U98, RIGHT},
{"pmem", "%MEM", pr_pmem, sr_nop, 4, 0, XXX, RIGHT}, /*%mem*/
{"poip", "-", pr_nop, sr_nop, 1, 0, BSD, RIGHT},
{"policy", "POL", pr_nop, sr_nop, 3, 0, DEC, RIGHT},
{"ppid", "PPID", pr_ppid, sr_ppid, 5, 0, U98, RIGHT},
{"pri", "PRI", pr_pri, sr_nop, 3, 0, XXX, RIGHT},
{"priority", "PRI", pr_priority, sr_priority, 3, 0, LNX, RIGHT}, /*ni,nice*/ /* from Linux sorting names */
{"prmgrp", "-", pr_nop, sr_nop, 1, 0, HPU, RIGHT},
{"prmid", "-", pr_nop, sr_nop, 1, 0, HPU, RIGHT},
{"pset", "PSET", pr_nop, sr_nop, 4, 0, DEC, RIGHT},
{"psr", "PSR", pr_psr, sr_nop, 3, 0, DEC, RIGHT},
{"psxpri", "PPR", pr_nop, sr_nop, 3, 0, DEC, RIGHT},
{"re", "RE", pr_nop, sr_nop, 3, 0, BSD, RIGHT},
{"resident", "RES", pr_nop, sr_resident, 5, 0, LNX, RIGHT},
{"rgid", "RGID", pr_rgid, sr_rgid, 5, 0, XXX, RIGHT},
{"rgroup", "RGROUP", pr_rgroup, sr_rgroup, 6, 0, U98, USER}, /* was 8 wide */
{"rlink", "RLINK", pr_nop, sr_nop, 8, 0, BSD, RIGHT},
{"rss", "RSS", pr_rss, sr_rss, 4, 0, XXX, RIGHT}, /* was 5 wide */
{"rssize", "RSS", pr_rss, sr_vm_rss, 4, 0, DEC, RIGHT}, /*rsz*/
{"rsz", "RSZ", pr_rss, sr_vm_rss, 4, 0, BSD, RIGHT}, /*rssize*/
{"rtprio", "RTPRIO", pr_nop, sr_nop, 7, 0, BSD, RIGHT},
{"ruid", "RUID", pr_ruid, sr_ruid, 5, 0, XXX, RIGHT},
{"ruser", "RUSER", pr_ruser, sr_ruser, 8, 0, U98, USER},
{"s", "S", pr_s, sr_state, 1, 0, SUN, LEFT}, /*stat,state*/
{"sched", "SCH", pr_nop, sr_nop, 1, 0, AIX, RIGHT},
{"scnt", "SCNT", pr_nop, sr_nop, 4, 0, DEC, RIGHT}, /* man page misspelling of scount? */
{"scount", "SC", pr_nop, sr_nop, 4, 0, AIX, RIGHT}, /* scnt==scount, DEC claims both */
{"sess", "SESS", pr_sess, sr_session, 5, 0, XXX, RIGHT},
{"session", "SESS", pr_sess, sr_session, 5, 0, LNX, RIGHT},
{"sgi_p", "P", pr_sgi_p, sr_nop, 1, 0, LNX, RIGHT}, /* "cpu" number */
{"sgi_rss", "RSS", pr_rss, sr_nop, 4, 0, LNX, LEFT}, /* SZ:RSS */
{"sgid", "SGID", pr_sgid, sr_sgid, 5, 0, LNX, RIGHT},
{"sgroup", "SGROUP", pr_sgroup, sr_sgroup, 8, 0, LNX, USER},
{"share", "-", pr_nop, sr_share, 1, 0, LNX, RIGHT},
{"sid", "SID", pr_sess, sr_session, 5, 0, XXX, RIGHT}, /* Sun & HP */
{"sig", "PENDING", pr_sig, sr_nop, 9, 0, XXX, SIGNAL}, /*pending*/
{"sig_block", "BLOCKED", pr_sigmask, sr_nop, 9, 0, LNX, SIGNAL},
{"sig_catch", "CATCHED", pr_sigcatch, sr_nop, 9, 0, LNX, SIGNAL},
{"sig_ignore", "IGNORED",pr_sigignore, sr_nop, 9, 0, LNX, SIGNAL},
{"sig_pend", "SIGNAL", pr_sig, sr_nop, 9, 0, LNX, SIGNAL},
{"sigcatch", "CAUGHT", pr_sigcatch, sr_nop, 9, 0, XXX, SIGNAL}, /*caught*/
{"sigignore", "IGNORED", pr_sigignore,sr_nop, 9, 0, XXX, SIGNAL}, /*ignored*/
{"sigmask", "BLOCKED", pr_sigmask, sr_nop, 9, 0, XXX, SIGNAL}, /*blocked*/
{"size", "-", pr_nop, sr_size, 1, 0, SCO, RIGHT},
{"sl", "SL", pr_nop, sr_nop, 3, 0, XXX, RIGHT},
{"spid", "SPID", pr_thread, sr_nop, 5, 0, SGI, RIGHT},
{"stackp", "STACKP", pr_stackp, sr_nop, 8, 0, LNX, RIGHT}, /*start_stack*/
{"start", "STARTED", pr_start, sr_nop, 8, 0, XXX, RIGHT},
{"start_code", "S_CODE", pr_nop, sr_start_code, 8, 0, LNx, RIGHT},
{"start_stack", "STACKP", pr_stackp, sr_start_stack, 8, 0, LNX, RIGHT}, /*stackp*/
{"start_time", "START", pr_stime, sr_start_time, 5, 0, LNx, RIGHT},
{"stat", "STAT", pr_stat, sr_state, 4, 0, BSD, LEFT}, /*state,s*/
{"state", "S", pr_s, sr_state, 1, 0, XXX, LEFT}, /*stat,s*/ /* was STAT */
{"status", "STATUS", pr_nop, sr_nop, 6, 0, DEC, RIGHT},
{"stime", "STIME", pr_stime, sr_stime, 5, 0, XXX, /* CUMUL| */RIGHT}, /* was 6 wide */
{"suid", "SUID", pr_suid, sr_suid, 5, 0, LNx, RIGHT},
{"suser", "SUSER", pr_suser, sr_suser, 8, 0, LNx, USER},
{"svgid", "SVGID", pr_sgid, sr_sgid, 5, 0, XXX, RIGHT},
{"svgroup", "SVGROUP", pr_sgroup, sr_sgroup, 8, 0, LNX, USER},
{"svuid", "SVUID", pr_suid, sr_suid, 5, 0, XXX, RIGHT},
{"svuser", "SVUSER", pr_suser, sr_suser, 8, 0, LNX, USER},
{"systime", "SYSTEM", pr_nop, sr_nop, 6, 0, DEC, RIGHT},
{"sz", "SZ", pr_sz, sr_nop, 5, 0, HPU, RIGHT},
{"tdev", "TDEV", pr_nop, sr_nop, 4, 0, XXX, RIGHT},
{"thcount", "THCNT", pr_nlwp, sr_nop, 5, 0, AIX, RIGHT},
{"tid", "TID", pr_thread, sr_nop, 5, 0, AIX, RIGHT},
{"time", "TIME", pr_time, sr_nop, 8, 0, U98, CUMUL|RIGHT}, /*cputime*/ /* was 6 wide */
{"timeout", "TMOUT", pr_timeout, sr_timeout, 5, 0, LNX, RIGHT},
{"tmout", "TMOUT", pr_timeout, sr_timeout, 5, 0, LNX, RIGHT},
{"tname", "TTY", pr_tty8, sr_tty, 8, 0, DEC, LEFT},
{"tpgid", "TPGID", pr_tpgid, sr_tpgid, 5, 0, XXX, RIGHT},
{"trs", "TRS", pr_trs, sr_trs, 4, 0, AIX, RIGHT},
{"trss", "TRSS", pr_trs, sr_trs, 4, 0, BSD, RIGHT}, /* 4.3BSD NET/2 */
{"tsess", "TSESS", pr_nop, sr_nop, 5, 0, BSD, RIGHT},
{"tsession", "TSESS", pr_nop, sr_nop, 5, 0, DEC, RIGHT},
{"tsiz", "TSIZ", pr_tsiz, sr_nop, 4, 0, BSD, RIGHT},
{"tt", "TT", pr_tty8, sr_tty, 8, 0, BSD, LEFT},
{"tty", "TT", pr_tty8, sr_tty, 8, 0, U98, LEFT}, /* Unix98 requires "TT" but has "TTY" too. :-( */ /* was 3 wide */
{"tty4", "TTY", pr_tty4, sr_tty, 4, 0, LNX, LEFT},
{"tty8", "TTY", pr_tty8, sr_tty, 8, 0, LNX, LEFT},
{"u_procp", "UPROCP", pr_nop, sr_nop, 6, 0, DEC, RIGHT},
{"ucmd", "CMD", pr_comm, sr_cmd, 16, 0, DEC, UNLIMITED}, /*ucomm*/
{"ucomm", "COMMAND", pr_comm, sr_nop, 16, 0, XXX, UNLIMITED}, /*comm*/
{"uid", "UID", pr_euid, sr_euid, 5, 0, XXX, RIGHT},
{"uid_hack", "UID", pr_euser, sr_nop, 8, 0, XXX, USER},
{"umask", "UMASK", pr_nop, sr_nop, 5, 0, DEC, RIGHT},
{"uname", "USER", pr_euser, sr_euser, 8, 0, DEC, USER}, /* man page misspelling of user? */
{"upr", "UPR", pr_nop, sr_nop, 3, 0, BSD, RIGHT}, /*usrpri*/
{"uprocp", "-", pr_nop, sr_nop, 1, 0, BSD, RIGHT},
{"user", "USER", pr_euser, sr_euser, 8, 0, U98, USER}, /* BSD n forces this to UID */
{"usertime", "USER", pr_nop, sr_nop, 4, 0, DEC, RIGHT},
{"usrpri", "UPR", pr_nop, sr_nop, 3, 0, DEC, RIGHT}, /*upr*/
{"utime", "UTIME", pr_nop, sr_utime, 6, 0, LNx, CUMUL|RIGHT},
{"vm_data", "DATA", pr_nop, sr_vm_data, 5, 0, LNx, RIGHT},
{"vm_exe", "EXE", pr_nop, sr_vm_exe, 5, 0, LNx, RIGHT},
{"vm_lib", "LIB", pr_nop, sr_vm_lib, 5, 0, LNx, RIGHT},
{"vm_lock", "LCK", pr_nop, sr_vm_lock, 3, 0, LNx, RIGHT},
{"vm_stack", "STACK", pr_nop, sr_vm_stack, 5, 0, LNx, RIGHT},
{"vsize", "VSZ", pr_vsz, sr_vsize, 5, 0, DEC, RIGHT}, /*vsz*/
{"vsz", "VSZ", pr_vsz, sr_vm_size, 5, 0, U98, RIGHT}, /*vsize*/
{"wchan", "WCHAN", pr_wchan, sr_wchan, 6, 0, XXX, WCHAN}, /* BSD n forces this to nwchan */ /* was 10 wide */
{"wname", "WCHAN", pr_wname, sr_nop, 6, 0, SGI, WCHAN}, /* opposite of nwchan */
{"xstat", "XSTAT", pr_nop, sr_nop, 5, 0, BSD, RIGHT},
{"~", "-", pr_nop, sr_nop, 1, 0, LNX, RIGHT} /* NULL would ruin alphabetical order */
};
static const int format_array_count = sizeof(format_array)/sizeof(format_struct);
/****************************** Macro formats *******************************/
/* First X field may be NR, which is p->start_code>>26 printed with %2ld */
/* That seems useless though, and Debian already killed it. */
/* The ones marked "Digital" have the name defined, not just the data. */
static const macro_struct macro_array[] = {
{"DFMT", "pid,tname,state,cputime,cmd"}, /* Digital's default */
{"DefBSD", "pid,tname,stat,bsdtime,args"}, /* Our BSD default */
{"DefSysV", "pid,tname,time,cmd"}, /* Our SysV default */
{"END_BSD", "state,tname,cputime,comm"}, /* trailer for O */
{"END_SYS5", "state,tname,time,command"}, /* trailer for -O */
{"F5FMT", "uname,pid,ppid,c,start,tname,time,cmd"}, /* Digital -f */
{"FB_", "pid,tt,stat,time,command"}, /* FreeBSD default */
{"FB_j", "user,pid,ppid,pgid,sess,jobc,stat,tt,time,command"}, /* FreeBSD j */
{"FB_l", "uid,pid,ppid,cpu,pri,nice,vsz,rss,wchan,stat,tt,time,command"}, /* FreeBSD l */
{"FB_u", "user,pid,pcpu,pmem,vsz,rss,tt,stat,start,time,command"}, /* FreeBSD u */
{"FB_v", "pid,stat,time,sl,re,pagein,vsz,rss,lim,tsiz,pcpu,pmem,command"}, /* FreeBSD v */
{"FD_", "pid,tty,time,comm"}, /* Fictional Debian SysV default */
{"FD_f", "user,pid,ppid,start_time,tty,time,comm"}, /* Fictional Debian -f */
{"FD_fj", "user,pid,ppid,start_time,tty,time,pgid,sid,comm"}, /* Fictional Debian -jf */
{"FD_j", "pid,tty,time,pgid,sid,comm"}, /* Fictional Debian -j */
{"FD_l", "flags,state,uid,pid,ppid,priority,nice,vsz,wchan,tty,time,comm"}, /* Fictional Debian -l */
{"FD_lj", "flags,state,uid,pid,ppid,priority,nice,vsz,wchan,tty,time,pgid,sid,comm"}, /* Fictional Debian -jl */
{"FL5FMT", "f,state,uid,pid,ppid,pcpu,pri,nice,rss,wchan,start,time,command"}, /* Digital -fl */
{"HP_", "pid,tty,time,comm"}, /* HP default */
{"HP_f", "user,pid,ppid,cpu,stime,tty,time,args"}, /* HP -f */
{"HP_fl", "flags,state,user,pid,ppid,cpu,intpri,nice,addr,sz,wchan,stime,tty,time,args"}, /* HP -fl */
{"HP_l", "flags,state,uid,pid,ppid,cpu,intpri,nice,addr,sz,wchan,tty,time,comm"}, /* HP -l */
{"J390", "pid,sid,pgrp,tname,atime,args"}, /* OS/390 -j */
{"JFMT", "user,pid,ppid,pgid,sess,jobc,state,tname,cputime,command"}, /* Digital j and -j */
{"L5FMT", "f,state,uid,pid,ppid,c,pri,nice,addr,sz,wchan,tt,time,ucmd"}, /* Digital -l */
{"LFMT", "uid,pid,ppid,cp,pri,nice,vsz,rss,wchan,state,tname,cputime,command"}, /* Digital l */
{"OL_X", "pid,start_stack,esp,eip,timeout,alarm,stat,tname,bsdtime,args"}, /* Old i386 Linux X */
{"OL_j", "ppid,pid,pgid,sid,tname,tpgid,stat,uid,bsdtime,args"}, /* Old Linux j */
{"OL_l", "flags,uid,pid,ppid,priority,nice,vsz,rss,wchan,stat,tname,bsdtime,args"}, /* Old Linux l */
{"OL_m", "pid,tname,majflt,minflt,m_trs,m_drs,m_size,m_swap,rss,m_share,vm_lib,m_dt,args"}, /* Old Linux m */
{"OL_s", "uid,pid,pending,sig_block,sig_ignore,caught,stat,tname,bsdtime,args"}, /* Old Linux s */
{"OL_u", "user,pid,pcpu,pmem,vsz,rss,tname,stat,start_time,bsdtime,args"}, /* Old Linux u */
{"OL_v", "pid,tname,stat,bsdtime,maj_flt,m_trs,m_drs,rss,pmem,args"}, /* Old Linux v */
{"RD_", "pid,tname,state,bsdtime,comm"}, /* Real Debian default */
{"RD_f", "uid,pid,ppid,start_time,tname,bsdtime,args"}, /* Real Debian -f */
{"RD_fj", "uid,pid,ppid,start_time,tname,bsdtime,pgid,sid,args"}, /* Real Debian -jf */
{"RD_j", "pid,tname,state,bsdtime,pgid,sid,comm"}, /* Real Debian -j */
{"RD_l", "flags,state,uid,pid,ppid,priority,nice,wchan,tname,bsdtime,comm"}, /* Real Debian -l */
{"RD_lj", "flags,state,uid,pid,ppid,priority,nice,wchan,tname,bsdtime,pgid,sid,comm"}, /* Real Debian -jl */
{"RUSAGE", "minflt,majflt,nswap,inblock,oublock,msgsnd,msgrcv,nsigs,nvcsw,nivcsw"}, /* Digital -o "RUSAGE" */
{"SCHED", "user,pcpu,pri,usrpri,nice,psxpri,psr,policy,pset"}, /* Digital -o "SCHED" */
{"SFMT", "uid,pid,cursig,sig,sigmask,sigignore,sigcatch,stat,tname,command"}, /* Digital s */
{"Std_f", "uid_hack,pid,ppid,c,stime,tname,time,cmd"}, /* new -f */
{"Std_fl", "f,s,uid_hack,pid,ppid,c,opri,ni,addr,sz,wchan,stime,tname,time,cmd"}, /* -fl */
{"Std_l", "f,s,uid,pid,ppid,c,opri,ni,addr,sz,wchan,tname,time,ucmd"}, /* new -l */
{"THREAD", "user,pcpu,pri,scnt,wchan,usertime,systime"}, /* Digital -o "THREAD" */
{"UFMT", "uname,pid,pcpu,pmem,vsz,rss,tt,state,start,time,command"}, /* Digital u */
{"VFMT", "pid,tt,state,time,sl,pagein,vsz,rss,pcpu,pmem,command"}, /* Digital v */
{"~", "~"} /* NULL would ruin alphabetical order */
};
static const int macro_array_count = sizeof(macro_array)/sizeof(macro_struct);
/*************************** AIX formats ********************/
/* Convert AIX format codes to normal format specifiers. */
static const aix_struct aix_array[] = {
{'C', "pcpu", "%CPU"},
{'G', "group", "GROUP"},
{'P', "ppid", "PPID"},
{'U', "user", "USER"},
{'a', "args", "COMMAND"},
{'c', "comm", "COMMAND"},
{'g', "rgroup", "RGROUP"},
{'n', "nice", "NI"},
{'p', "pid", "PID"},
{'r', "pgid", "PGID"},
{'t', "etime", "ELAPSED"},
{'u', "ruser", "RUSER"},
{'x', "time", "TIME"},
{'y', "tty", "TTY"},
{'z', "vsz", "VSZ"},
{'~', "~", "~"} /* NULL would ruin alphabetical order */
};
static const int aix_array_count = sizeof(aix_array)/sizeof(aix_struct);
/********************* sorting ***************************/
/* Convert short sorting codes to normal format specifiers. */
static const shortsort_struct shortsort_array[] = {
{'C', "pcpu" },
{'G', "tpgid" },
{'J', "cstime" },
/* {'K', "stime" }, */ /* conflict, system vs. start time */
{'M', "maj_flt" },
{'N', "cmaj_flt" },
{'P', "ppid" },
{'R', "resident" },
{'S', "share" },
{'T', "start_time" },
{'U', "uid" }, /* euid */
{'c', "cmd" },
{'f', "flags" },
{'g', "pgrp" },
{'j', "cutime" },
{'k', "utime" },
{'m', "min_flt" },
{'n', "cmin_flt" },
{'o', "session" },
{'p', "pid" },
{'r', "rss" },
{'s', "size" },
{'t', "tty" },
{'u', "user" },
{'v', "vsize" },
{'y', "priority" }, /* nice */
{'~', "~" } /* NULL would ruin alphabetical order */
};
static const int shortsort_array_count = sizeof(shortsort_array)/sizeof(shortsort_struct);
/*********** print format_array **********/
/* called by the parser in another file */
void print_format_specifiers(void){
const format_struct *walk = format_array;
while(*(walk->spec) != '~'){
if(walk->pr != pr_nop) printf("%-12.12s %-8.8s\n", walk->spec, walk->head);
walk++;
}
}
/************ comparison functions for bsearch *************/
static int compare_format_structs(const void *a, const void *b){
return strcmp(((format_struct*)a)->spec,((format_struct*)b)->spec);
}
static int compare_macro_structs(const void *a, const void *b){
return strcmp(((macro_struct*)a)->spec,((macro_struct*)b)->spec);
}
/******** look up structs as needed by the sort & format parsers ******/
const shortsort_struct *search_shortsort_array(const int findme){
const shortsort_struct *walk = shortsort_array;
while(walk->desc != '~'){
if(walk->desc == findme) return walk;
walk++;
}
return NULL;
}
const aix_struct *search_aix_array(const int findme){
const aix_struct *walk = aix_array;
while(walk->desc != '~'){
if(walk->desc == findme) return walk;
walk++;
}
return NULL;
}
const format_struct *search_format_array(const char *findme){
format_struct key;
key.spec = findme;
return bsearch(&key, format_array, format_array_count,
sizeof(format_struct), compare_format_structs
);
}
const macro_struct *search_macro_array(const char *findme){
macro_struct key;
key.spec = findme;
return bsearch(&key, macro_array, macro_array_count,
sizeof(macro_struct), compare_macro_structs
);
}
static unsigned int active_cols; /* some multiple of screen_cols */
/***** Last chance, avoid needless trunctuation. */
static void check_header_width(void){
format_node *walk = format_list;
unsigned int total = 0;
int was_normal = 0;
unsigned int i = 0;
unsigned int sigs = 0;
while(walk){
switch((walk->flags) & JUST_MASK){
default:
total += walk->width;
total += was_normal;
was_normal = 1;
break;
case SIGNAL:
sigs++;
total += walk->width;
total += was_normal;
was_normal = 1;
break;
case UNLIMITED: /* could chop this a bit */
if(walk->next) total += walk->width;
else total += 3; /* not strlen(walk->name) */
total += was_normal;
was_normal = 1;
break;
case 0: /* AIX */
total += walk->width;
was_normal = 0;
break;
}
walk = walk->next;
}
for(;;){
i++;
active_cols = screen_cols * i;
if(active_cols>=total) break;
if(screen_cols*i >= OUTBUF_SIZE/2) break; /* can't go over */
}
wide_signals = (total+sigs*7 <= active_cols);
#if 0
printf("123456789-123456789-123456789-123456789-"
"123456789-123456789-123456789-123456789\n");
printf("need %d, using %d\n", total, active_cols);
#endif
}
/********** show one process (NULL proc prints header) **********/
void show_one_proc(proc_t* p){
/* unknown: maybe set correct & actual to 1, remove +/- 1 below */
int correct = 0; /* screen position we should be at */
int actual = 0; /* screen position we are at */
int amount = 0; /* amount of text that this data is */
int leftpad = 0; /* amount of space this column _could_ need */
int space = 0; /* amount of space we actually need to print */
int dospace = 0; /* previous column determined that we need a space */
int legit = 0; /* legitimately stolen extra space */
format_node *fmt = format_list;
static int did_stuff = 0; /* have we ever printed anything? */
if(-1==(long)p){ /* true only once, at the end */
check_header_width(); /* temporary test code */
if(did_stuff) return;
/* have _never_ printed anything, but might need a header */
if(!--lines_to_next_header){
lines_to_next_header = header_gap;
show_one_proc(NULL);
}
/* fprintf(stderr, "No processes available.\n"); */ /* legal? */
exit(1);
}
if(p){ /* not header, maybe we should call ourselves for it */
if(!--lines_to_next_header){
lines_to_next_header = header_gap;
show_one_proc(NULL);
}
}
did_stuff = 1;
pp = p; /* global, the proc_t struct */
if(active_cols>(int)OUTBUF_SIZE) fprintf(stderr,"Fix bigness error.\n");
/* print row start sequence */
for(;;){
legit = 0;
/* set width suggestion which might be ignored */
if(fmt->next) max_rightward = fmt->width;
else max_rightward = active_cols-((correct>actual) ? correct : actual);
max_leftward = fmt->width + actual - correct; /* TODO check this */
/* prepare data and calculate leftpad */
if(p && fmt->pr) amount = (*fmt->pr)();
else amount = strlen(strcpy(outbuf, fmt->name)); /* AIX or headers */
switch((fmt->flags) & JUST_MASK){
case 0: /* for AIX, assigned outside this file */
leftpad = 0;
break;
case LEFT: /* bad */
leftpad = 0;
break;
case RIGHT: /* OK */
leftpad = fmt->width - amount;
if(leftpad < 0) leftpad = 0;
break;
case SIGNAL:
/* if the screen is wide enough, use full 16-character output */
if(wide_signals){
leftpad = 16 - amount;
legit = 7;
}else{
leftpad = 9 - amount;
}
if(leftpad < 0) leftpad = 0;
break;
case USER: /* bad */
leftpad = fmt->width - amount;
if(leftpad < 0) leftpad = 0;
if(!user_is_number) leftpad = 0;
break;
case WCHAN: /* bad */
if(wchan_is_number){
leftpad = fmt->width - amount;
if(leftpad < 0) leftpad = 0;
break;
}else{
if(fmt->next){
outbuf[fmt->width] = '\0'; /* Must chop, more columns! */
}else{
int chopspot; /* place to chop */
int tmpspace; /* need "space" before it is calculated below */
tmpspace = correct - actual;
if(tmpspace<1) tmpspace = dospace;
chopspot = active_cols-actual-tmpspace;
if(chopspot<1) chopspot=1; /* oops, we (mostly) lose this column... */
outbuf[chopspot] = '\0'; /* chop at screen/buffer limit */
}
leftpad = 0;
break;
}
case UNLIMITED:
if(fmt->next){
outbuf[fmt->width] = '\0'; /* Must chop, more columns! */
}else{
int chopspot; /* place to chop */
int tmpspace; /* need "space" before it is calculated below */
tmpspace = correct - actual;
if(tmpspace<1) tmpspace = dospace;
chopspot = active_cols-actual-tmpspace;
if(chopspot<1) chopspot=1; /* oops, we (mostly) lose this column... */
outbuf[chopspot] = '\0'; /* chop at screen/buffer limit */
}
leftpad = 0;
break;
default:
fputs("bad alignment code\n", stderr);
break;
}
/* At this point:
*
* correct from previous column
* actual from previous column
* amount not needed (garbage due to chopping)
* leftpad left padding for this column alone (not make-up or gap)
* space not needed (will recalculate now)
* dospace if we require space between this and the prior column
* legit space we were allowed to steal, and thus did steal
*/
space = correct - actual + leftpad;
if(space<1) space=dospace;
if(space>SPACE_AMOUNT) space=SPACE_AMOUNT;
/* print data, set x position stuff */
amount = strlen(outbuf); /* post-chop data width */
if(!fmt->next){
/* Last column. Write padding + data + newline all together. */
outbuf[amount] = '\n';
fwrite(outbuf-space, space+amount+1, 1, stdout);
break;
}
/* Not the last column. Write padding + data together. */
fwrite(outbuf-space, space+amount, 1, stdout);
actual += space+amount;
correct += fmt->width;
correct += legit; /* adjust for SIGNAL expansion */
if(fmt->pr && fmt->next->pr){ /* neither is AIX filler */
correct++;
dospace = 1;
}else{
dospace = 0;
}
fmt = fmt->next;
/* At this point:
*
* correct screen position we should be at
* actual screen position we are at
* amount not needed
* leftpad not needed
* space not needed
* dospace if have determined that we need a space next time
* legit not needed
*/
}
}
#ifdef TESTING
static void sanity_check(void){
format_struct *fs = format_array;
while((fs->spec)[0] != '~'){
if(strlen(fs->head) > fs->width) printf("%d %s\n",strlen(fs->head),fs->spec);
fs++;
}
}
#endif
void init_output(void){
memset(whitespace, ' ', PAGE_SIZE);
#if 0
mprotect(whitespace, PAGE_SIZE, PROT_READ); /* FIXME may fail if unaligned */
mprotect(
(void *)((unsigned long)(whitespace_and_outbuf-PAGE_SIZE) &~ (PAGE_SIZE-1)),
PAGE_SIZE, PROT_NONE
);
#endif
seconds_since_1970 = time(NULL);
time_of_boot = seconds_since_1970 - seconds_since_boot;
meminfo();
switch(getpagesize()){
case 65536: page_shift = 16; break;
case 32768: page_shift = 15; break;
case 16384: page_shift = 14; break;
case 8192: page_shift = 13; break;
default: fprintf(stderr, "Unknown page size! (assume 4096)\n");
case 4096: page_shift = 12; break;
case 2048: page_shift = 11; break;
case 1024: page_shift = 10; break;
}
check_header_width();
}
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