emo/procps
1
0
Fork 0
Code Issues Pull Requests Packages Releases Activity
0fe393ff27
procps/ps/output.c
Lukas Nykryn 7b50c2e918 ps: possibility to display seat for a process 
Library systemd-login offers possibility to display
name of seat for a session on multi-seat systems.

This patch adds output option "sd_seat" which will
show name of seat or "-", when name of seat can not
be determined, but "seat0" should always exist.

To maintain compatibility with non-systemd systems,
procps must be configured with --with-systemd option
to enable this option.
2013-04-24 09:24:44 +02:00

2151 lines
86 KiB
C
Raw Blame History

/*
* output.c - ps output definitions
* Copyright 1999-2004 by Albert Cahalan
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* 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.
*/
#include <ctype.h>
#include <dlfcn.h>
#include <fcntl.h>
#include <grp.h>
#include <limits.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/resource.h>
#include <sys/types.h>
#include "../proc/readproc.h"
#include "../proc/sysinfo.h"
#include "../proc/wchan.h"
#include "../proc/procps.h"
#include "../proc/devname.h"
#include "../proc/escape.h"
#include "common.h"
#ifdef WITH_SYSTEMD
#include <systemd/sd-login.h>
#endif
/* TODO:
* Stop assuming system time is local time.
*/
#define COLWID 240 /* satisfy snprintf, which is faster than sprintf */
static unsigned max_rightward = 0x12345678; /* space for RIGHT stuff */
static unsigned max_leftward = 0x12345678; /* space for LEFT stuff */
static int wide_signals; /* true if we have room */
static time_t seconds_since_1970;
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; \
}
/* fast versions, for values which either:
* a. differ by no more than 0x7fffffff
* b. only need to be grouped same w/ same
*/
#define CMP_SMALL(NAME) \
static int sr_ ## NAME (const proc_t* P, const proc_t* Q) { \
return (int)(P->NAME) - (int)(Q->NAME); \
}
#define CMP_SMALL2(NAME,WHAT) \
static int sr_ ## NAME (const proc_t* P, const proc_t* Q) { \
return (int)(P->WHAT) - (int)(Q->WHAT); \
}
#define cook_time(P) (P->utime + P->stime) / Hertz
#define cook_etime(P) (((unsigned long long)seconds_since_boot >= (P->start_time / Hertz)) ? ((unsigned long long)seconds_since_boot - (P->start_time / Hertz)) : 0)
#define CMP_COOKED_TIME(NAME) \
static int sr_ ## NAME (const proc_t* P, const proc_t* Q) { \
unsigned long p_time,q_time; \
p_time=cook_ ##NAME (P); \
q_time=cook_ ##NAME (Q); \
if (p_time < q_time) return -1; \
if (p_time > q_time) return 1; \
return 0; \
}
CMP_INT(rtprio)
CMP_SMALL(sched)
CMP_INT(cutime)
CMP_SMALL(priority) /* nice */
CMP_SMALL(nlwp)
CMP_SMALL(nice) /* priority */
CMP_INT(rss) /* resident set size from stat file */ /* vm_rss, resident */
CMP_INT(alarm)
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_SMALL(flags)
CMP_INT(min_flt)
CMP_INT(maj_flt)
CMP_INT(cmin_flt)
CMP_INT(cmaj_flt)
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_SMALL2(procs,tgid)
CMP_SMALL2(tasks,tid)
CMP_SMALL(ppid)
CMP_SMALL(pgrp)
CMP_SMALL(session)
CMP_INT(tty)
CMP_SMALL(tpgid)
CMP_SMALL(pcpu)
CMP_SMALL(state)
CMP_COOKED_TIME(time)
CMP_COOKED_TIME(etime)
/* approximation to: kB of address space that could end up in swap */
static int sr_swapable(const proc_t* P, const proc_t* Q) {
unsigned long p_swapable = P->vm_data + P->vm_stack;
unsigned long q_swapable = Q->vm_data + Q->vm_stack;
if (p_swapable < q_swapable) return -1;
if (p_swapable > q_swapable) return 1;
return 0;
}
/***************************************************************************/
/************ Lots of format functions, starting with the NOP **************/
// so popular it can't be "static"
int pr_nop(char *restrict const outbuf, const proc_t *restrict const pp){
(void)pp;
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? */
//
// OldLinux FreeBSD HPUX
// ' ' ' ' ' ' ' '
// 'L' ' \_ ' '`-' ' '
// '+' ' \_ ' '|-' ' '
// '|' ' | ' '| ' ' '
//
static int forest_helper(char *restrict const outbuf){
char *p = forest_prefix;
char *q = outbuf;
int rightward=max_rightward;
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 */
}
if (rightward-4 < 0) {
*(q+rightward)='\0';
return max_rightward;
}
q += 4;
rightward -= 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 */
}
if (rightward-2 < 0) {
*(q+rightward)='\0';
return max_rightward;
}
q += 2;
rightward -= 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
*/
// FIXME: some of these may hit the guard page in forest mode
/*
* "args", "cmd", "command" are all the same: long unless c
* "comm", "ucmd", "ucomm" are all the same: short unless -f
* ( determinations are made in display.c, we mostly deal with results ) */
static int pr_args(char *restrict const outbuf, const proc_t *restrict const pp){
char *endp = outbuf;
int rightward = max_rightward;
int fh = forest_helper(outbuf);
endp += fh;
rightward -= fh;
if(pp->cmdline && !bsd_c_option)
endp += escaped_copy(endp, *pp->cmdline, OUTBUF_SIZE, &rightward);
else
endp += escape_command(endp, pp, OUTBUF_SIZE, &rightward, ESC_DEFUNCT);
if(bsd_e_option && rightward>1) {
if(pp->environ && *pp->environ) {
*endp++ = ' ';
rightward--;
endp += escape_strlist(endp, pp->environ, OUTBUF_SIZE, &rightward);
}
}
return max_rightward-rightward;
}
/*
* "args", "cmd", "command" are all the same: long unless c
* "comm", "ucmd", "ucomm" are all the same: short unless -f
* ( determinations are made in display.c, we mostly deal with results ) */
static int pr_comm(char *restrict const outbuf, const proc_t *restrict const pp){
char *endp = outbuf;
int rightward = max_rightward;
int fh = forest_helper(outbuf);
endp += fh;
rightward -= fh;
if(pp->cmdline && unix_f_option)
endp += escaped_copy(endp, *pp->cmdline, OUTBUF_SIZE, &rightward);
else
endp += escape_command(endp, pp, OUTBUF_SIZE, &rightward, ESC_DEFUNCT);
if(bsd_e_option && rightward>1) {
if(pp->environ && *pp->environ) {
*endp++ = ' ';
rightward--;
endp += escape_strlist(endp, pp->environ, OUTBUF_SIZE, &rightward);
}
}
return max_rightward-rightward;
}
static int pr_cgroup(char *restrict const outbuf,const proc_t *restrict const pp) {
int rightward = max_rightward;
escaped_copy(outbuf, *pp->cgroup, OUTBUF_SIZE, &rightward);
return max_rightward-rightward;
}
/* Non-standard, from SunOS 5 */
static int pr_fname(char *restrict const outbuf, const proc_t *restrict const pp){
char *endp = outbuf;
int rightward = max_rightward;
int fh = forest_helper(outbuf);
endp += fh;
rightward -= fh;
if (rightward>8) /* 8=default, but forest maybe feeds more */
rightward = 8;
endp += escape_str(endp, pp->cmd, OUTBUF_SIZE, &rightward);
//return endp - outbuf;
return max_rightward-rightward;
}
/* elapsed wall clock time, [[dd-]hh:]mm:ss format (not same as "time") */
static int pr_etime(char *restrict const outbuf, const proc_t *restrict const pp){
unsigned long t;
unsigned dd,hh,mm,ss;
char *cp = outbuf;
t = cook_etime(pp);
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);
}
/* elapsed wall clock time in seconds */
static int pr_etimes(char *restrict const outbuf, const proc_t *restrict const pp){
unsigned t = cook_etime(pp);
return snprintf(outbuf, COLWID, "%u", t);
}
/* "Processor utilisation for scheduling." --- we use %cpu w/o fraction */
static int pr_c(char *restrict const outbuf, const proc_t *restrict const pp){
unsigned long long total_time; /* jiffies used by this process */
unsigned pcpu = 0; /* scaled %cpu, 99 means 99% */
unsigned long long seconds; /* seconds of process life */
total_time = pp->utime + pp->stime;
if(include_dead_children) total_time += (pp->cutime + pp->cstime);
seconds = cook_etime(pp);
if(seconds) pcpu = (total_time * 100ULL / Hertz) / seconds;
if (pcpu > 99U) pcpu = 99U;
return snprintf(outbuf, COLWID, "%2u", pcpu);
}
/* normal %CPU in ##.# format. */
static int pr_pcpu(char *restrict const outbuf, const proc_t *restrict const pp){
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 */
total_time = pp->utime + pp->stime;
if(include_dead_children) total_time += (pp->cutime + pp->cstime);
seconds = cook_etime(pp);
if(seconds) pcpu = (total_time * 1000ULL / Hertz) / seconds;
if (pcpu > 999U)
return snprintf(outbuf, COLWID, "%u", pcpu/10U);
return snprintf(outbuf, COLWID, "%u.%u", pcpu/10U, pcpu%10U);
}
/* this is a "per-mill" format, like %cpu with no decimal point */
static int pr_cp(char *restrict const outbuf, const proc_t *restrict const pp){
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 */
total_time = pp->utime + pp->stime;
if(include_dead_children) total_time += (pp->cutime + pp->cstime);
seconds = cook_etime(pp);
if(seconds) pcpu = (total_time * 1000ULL / Hertz) / seconds;
if (pcpu > 999U) pcpu = 999U;
return snprintf(outbuf, COLWID, "%3u", pcpu);
}
static int pr_pgid(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%u", pp->pgrp);
}
static int pr_ppid(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%u", pp->ppid);
}
/* cumulative CPU time, [dd-]hh:mm:ss format (not same as "etime") */
static int pr_time(char *restrict const outbuf, const proc_t *restrict const pp){
unsigned long t;
unsigned dd,hh,mm,ss;
int c;
t = cook_time(pp);
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(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%lu", pp->vm_size);
}
//////////////////////////////////////////////////////////////////////////////////////
// "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.
//
// According to the kernel's fs/proc/array.c and kernel/sched.c source,
// the kernel reports it in /proc via this:
// p->prio - MAX_RT_PRIO
// such that "RT tasks are offset by -200. Normal tasks are centered
// around 0, value goes from -16 to +15" but who knows if that is
// before or after the conversion...
//
// <linux/sched.h> says:
// MAX_RT_PRIO is currently 100. (so we see 0 in /proc)
// RT tasks have a p->prio of 0 to 99. (so we see -100 to -1)
// non-RT tasks are from 100 to 139. (so we see 0 to 39)
// Lower values have higher priority, as in the UNIX standard.
//
// In any case, pp->priority+100 should get us back to what the kernel
// has for p->prio.
//
// Test results with the "yes" program on a 2.6.x kernel:
//
// # ps -C19,_20 -o pri,opri,intpri,priority,ni,pcpu,pid,comm
// PRI PRI PRI PRI NI %CPU PID COMMAND
// 0 99 99 39 19 10.6 8686 19
// 34 65 65 5 -20 94.7 8687 _20
//
// Grrr. So the UNIX standard "PRI" must NOT be from "pri".
// Either of the others will do. We use "opri" for this.
// (and use "pri" when the "-c" option is used)
// Probably we should have Linux-specific "pri_for_l" and "pri_for_lc"
//
// sched_get_priority_min.2 says the Linux static priority is
// 1..99 for RT and 0 for other... maybe 100 is kernel-only?
//
// A nice range would be -99..0 for RT and 1..40 for normal,
// which is pp->priority+1. (3-digit max, positive is normal,
// negative or 0 is RT, and meets the standard for PRI)
//
// legal as UNIX "PRI"
// "priority" (was -20..20, now -100..39)
static int pr_priority(char *restrict const outbuf, const proc_t *restrict const pp){ /* -20..20 */
return snprintf(outbuf, COLWID, "%ld", pp->priority);
}
// legal as UNIX "PRI"
// "intpri" and "opri" (was 39..79, now -40..99)
static int pr_opri(char *restrict const outbuf, const proc_t *restrict const pp){ /* 39..79 */
return snprintf(outbuf, COLWID, "%ld", 60 + pp->priority);
}
// legal as UNIX "PRI"
// "pri_foo" -- match up w/ nice values of sleeping processes (-120..19)
static int pr_pri_foo(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%ld", pp->priority - 20);
}
// legal as UNIX "PRI"
// "pri_bar" -- makes RT pri show as negative (-99..40)
static int pr_pri_bar(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%ld", pp->priority + 1);
}
// legal as UNIX "PRI"
// "pri_baz" -- the kernel's ->prio value, as of Linux 2.6.8 (1..140)
static int pr_pri_baz(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%ld", pp->priority + 100);
}
// not legal as UNIX "PRI"
// "pri" (was 20..60, now 0..139)
static int pr_pri(char *restrict const outbuf, const proc_t *restrict const pp){ /* 20..60 */
return snprintf(outbuf, COLWID, "%ld", 39 - pp->priority);
}
// not legal as UNIX "PRI"
// "pri_api" -- match up w/ RT API (-40..99)
static int pr_pri_api(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%ld", -1 - pp->priority);
}
// Linux applies nice value in the scheduling policies (classes)
// SCHED_OTHER(0) and SCHED_BATCH(3). Ref: sched_setscheduler(2).
// Also print nice value for old kernels which didn't use scheduling
// policies (-1).
static int pr_nice(char *restrict const outbuf, const proc_t *restrict const pp){
if(pp->sched!=0 && pp->sched!=3 && pp->sched!=-1) return snprintf(outbuf, COLWID, "-");
return snprintf(outbuf, COLWID, "%ld", pp->nice);
}
// HP-UX "cls": RT RR RR2 ???? HPUX FIFO KERN
// Solaris "class": SYS TS FX IA RT FSS (FIFO is RR w/ Inf quant)
// FIFO+RR share RT; FIFO has Inf quant
// IA=interactive; FX=fixed; TS=timeshare; SYS=system
// FSS=fairshare; INTS=interrupts
// Tru64 "policy": FF RR TS
// IRIX "class": RT TS B BC WL GN
// RT=real-time; TS=time-share; B=batch; BC=batch-critical
// WL=weightless; GN=gang-scheduled
// see miser(1) for this; PRI has some letter codes too
static int pr_class(char *restrict const outbuf, const proc_t *restrict const pp){
switch(pp->sched){
case -1: return snprintf(outbuf, COLWID, "-"); // not reported
case 0: return snprintf(outbuf, COLWID, "TS"); // SCHED_OTHER SCHED_NORMAL
case 1: return snprintf(outbuf, COLWID, "FF"); // SCHED_FIFO
case 2: return snprintf(outbuf, COLWID, "RR"); // SCHED_RR
case 3: return snprintf(outbuf, COLWID, "B"); // SCHED_BATCH
case 4: return snprintf(outbuf, COLWID, "ISO"); // reserved for SCHED_ISO (Con Kolivas)
case 5: return snprintf(outbuf, COLWID, "IDL"); // SCHED_IDLE
case 6: return snprintf(outbuf, COLWID, "#6"); //
case 7: return snprintf(outbuf, COLWID, "#7"); //
case 8: return snprintf(outbuf, COLWID, "#8"); //
case 9: return snprintf(outbuf, COLWID, "#9"); //
default: return snprintf(outbuf, COLWID, "?"); // unknown value
}
}
// Based on "type", FreeBSD would do:
// REALTIME "real:%u", prio
// NORMAL "normal"
// IDLE "idle:%u", prio
// default "%u:%u", type, prio
// We just print the priority, and have other keywords for type.
static int pr_rtprio(char *restrict const outbuf, const proc_t *restrict const pp){
if(pp->sched==0 || pp->sched==(unsigned long)-1) return snprintf(outbuf, COLWID, "-");
return snprintf(outbuf, COLWID, "%ld", pp->rtprio);
}
static int pr_sched(char *restrict const outbuf, const proc_t *restrict const pp){
if(pp->sched==(unsigned long)-1) return snprintf(outbuf, COLWID, "-");
return snprintf(outbuf, COLWID, "%ld", pp->sched);
}
////////////////////////////////////////////////////////////////////////////////
static int pr_wchan(char *restrict const outbuf, const proc_t *restrict const pp){
/*
* 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.
*
* The output should be truncated to maximal columns width -- overflow
* is not supported for the "wchan".
*/
const char *w;
size_t len;
if(!(pp->wchan & 0xffffff)) return memcpy(outbuf,"-",2),1;
if(wchan_is_number) return snprintf(outbuf, COLWID, "%x", (unsigned)(pp->wchan) & 0xffffffu);
w = lookup_wchan(pp->wchan, pp->XXXID);
len = strlen(w);
if(len>max_rightward) len=max_rightward;
memcpy(outbuf, w, len);
outbuf[len] = '\0';
return len;
}
static int pr_wname(char *restrict const outbuf, const proc_t *restrict const pp){
/* 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.
*
* The output should be truncated to maximal columns width -- overflow
* is not supported for the "wchan".
*/
const char *w;
size_t len;
if(!(pp->wchan & 0xffffff)) return memcpy(outbuf,"-",2),1;
w = lookup_wchan(pp->wchan, pp->XXXID);
len = strlen(w);
if(len>max_rightward) len=max_rightward;
memcpy(outbuf, w, len);
outbuf[len] = '\0';
return len;
}
static int pr_nwchan(char *restrict const outbuf, const proc_t *restrict const pp){
if(!(pp->wchan & 0xffffff)) return memcpy(outbuf,"-",2),1;
return snprintf(outbuf, COLWID, "%x", (unsigned)(pp->wchan) & 0xffffffu);
}
/* Terrible trunctuation, like BSD crap uses: I999 J999 K999 */
/* FIXME: disambiguate /dev/tty69 and /dev/pts/69. */
static int pr_tty4(char *restrict const outbuf, const proc_t *restrict const pp){
/* snprintf(outbuf, COLWID, "%02x:%02x", pp->tty>>8, pp->tty&0xff); */
return dev_to_tty(outbuf, 4, pp->tty, pp->XXXID, ABBREV_DEV|ABBREV_TTY|ABBREV_PTS);
}
/* Unix98: format is unspecified, but must match that used by who(1). */
static int pr_tty8(char *restrict const outbuf, const proc_t *restrict const pp){
/* snprintf(outbuf, COLWID, "%02x:%02x", pp->tty>>8, pp->tty&0xff); */
return dev_to_tty(outbuf, COLWID, pp->tty, pp->XXXID, ABBREV_DEV);
}
#if 0
/* This BSD state display may contain spaces, which is illegal. */
static int pr_oldstate(char *restrict const outbuf, const proc_t *restrict const pp){
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(char *restrict const outbuf, const proc_t *restrict const pp){
int end = 0;
outbuf[end++] = pp->state;
// if(pp->rss==0 && pp->state!='Z') outbuf[end++] = 'W'; // useless "swapped out"
if(pp->nice < 0) outbuf[end++] = '<';
if(pp->nice > 0) outbuf[end++] = 'N';
// In this order, NetBSD would add:
// traced 'X'
// systrace 'x'
// exiting 'E' (not printed for zombies)
// vforked 'V'
// system 'K' (and do not print 'L' too)
if(pp->vm_lock) outbuf[end++] = 'L';
if(pp->session == pp->tgid) outbuf[end++] = 's'; // session leader
if(pp->nlwp > 1) outbuf[end++] = 'l'; // multi-threaded
if(pp->pgrp == pp->tpgid) outbuf[end++] = '+'; // in foreground process group
outbuf[end] = '\0';
return end;
}
/* This minimal state display is Unix98 compliant, like SCO and SunOS 5 */
static int pr_s(char *restrict const outbuf, const proc_t *restrict const pp){
outbuf[0] = pp->state;
outbuf[1] = '\0';
return 1;
}
static int pr_flag(char *restrict const outbuf, const proc_t *restrict const pp){
/* Unix98 requires octal flags */
/* this user-hostile and volatile junk gets 1 character */
return snprintf(outbuf, COLWID, "%o", (unsigned)(pp->flags>>6U)&0x7U);
}
// plus these: euid,ruid,egroup,rgroup (elsewhere in this file)
/*********** 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(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%08x", (unsigned)(pp->start_stack));
}
static int pr_esp(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%08x", (unsigned)(pp->kstk_esp));
}
static int pr_eip(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%08x", (unsigned)(pp->kstk_eip));
}
/* This function helps print old-style time formats */
static int old_time_helper(char *dst, unsigned long long t, unsigned long long rel) {
if(!t) return snprintf(dst, COLWID, " -");
if(t == ~0ULL) return snprintf(dst, COLWID, " xx");
if((long long)(t-=rel) < 0) t=0ULL;
if(t>9999ULL) return snprintf(dst, COLWID, "%5llu", t/100ULL);
else return snprintf(dst, COLWID, "%2u.%02u", (unsigned)t/100U, (unsigned)t%100U);
}
static int pr_bsdtime(char *restrict const outbuf, const proc_t *restrict const pp){
unsigned long long t;
unsigned u;
t = pp->utime + pp->stime;
if(include_dead_children) t += (pp->cutime + pp->cstime);
u = t / Hertz;
return snprintf(outbuf, COLWID, "%3u:%02u", u/60U, u%60U);
}
static int pr_bsdstart(char *restrict const outbuf, const proc_t *restrict const pp){
time_t start;
time_t seconds_ago;
start = getbtime() + pp->start_time / Hertz;
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_alarm(char *restrict const outbuf, const proc_t *restrict const pp){
return old_time_helper(outbuf, pp->alarm, 0ULL);
}
/* HP-UX puts this in pages and uses "vsz" for kB */
static int pr_sz(char *restrict const outbuf, const proc_t *restrict const pp){
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(char *restrict const outbuf, const proc_t *restrict const pp){
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(char *restrict const outbuf, const proc_t *restrict const pp){
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(char *restrict const outbuf, const proc_t *restrict const pp){
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(char *restrict const outbuf, const proc_t *restrict const pp){
long trs = 0;
if(pp->vsize) trs += (pp->end_code - pp->start_code) >> 10;
return snprintf(outbuf, COLWID, "%ld", trs);
}
/* approximation to: kB of address space that could end up in swap */
static int pr_swapable(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%ld", pp->vm_data + pp->vm_stack);
}
/* nasty old Debian thing */
static int pr_size(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%ld", pp->size);
}
static int pr_minflt(char *restrict const outbuf, const proc_t *restrict const pp){
long flt = pp->min_flt;
if(include_dead_children) flt += pp->cmin_flt;
return snprintf(outbuf, COLWID, "%ld", flt);
}
static int pr_majflt(char *restrict const outbuf, const proc_t *restrict const pp){
long flt = pp->maj_flt;
if(include_dead_children) flt += pp->cmaj_flt;
return snprintf(outbuf, COLWID, "%ld", flt);
}
static int pr_lim(char *restrict const outbuf, const proc_t *restrict const pp){
if(pp->rss_rlim == RLIM_INFINITY){
outbuf[0] = 'x';
outbuf[1] = 'x';
outbuf[2] = '\0';
return 2;
}
return snprintf(outbuf, COLWID, "%5ld", pp->rss_rlim >> 10);
}
/* should print leading tilde ('~') if process is bound to the CPU */
static int pr_psr(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%d", pp->processor);
}
static int pr_rss(char *restrict const outbuf, const proc_t *restrict const pp){
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(char *restrict const outbuf, const proc_t *restrict const pp){
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(char *restrict const outbuf, const proc_t *restrict const pp){
time_t t;
t = getbtime() + pp->start_time / Hertz;
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(char *restrict const outbuf, const proc_t *restrict const pp){
struct tm *proc_time;
struct tm *our_time;
time_t t;
const 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;
t = getbtime() + pp->start_time / Hertz;
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(char *restrict const outbuf, const proc_t *restrict const pp){
time_t t;
char *str;
t = getbtime() + pp->start_time / Hertz;
str = ctime(&t);
if(str[8]==' ') str[8]='0';
if(str[11]==' ') str[11]='0';
if((unsigned long)t+60*60*24 > (unsigned long)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(char *restrict const outbuf, const char *restrict const 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
// This one is always thread-specific pending. (from Dragonfly BSD)
static int pr_tsig(char *restrict const outbuf, const proc_t *restrict const pp){
return help_pr_sig(outbuf, pp->_sigpnd);
}
// This one is (wrongly?) thread-specific when printing thread lines,
// but process-pending otherwise.
static int pr_sig(char *restrict const outbuf, const proc_t *restrict const pp){
return help_pr_sig(outbuf, pp->signal);
}
static int pr_sigmask(char *restrict const outbuf, const proc_t *restrict const pp){
return help_pr_sig(outbuf, pp->blocked);
}
static int pr_sigignore(char *restrict const outbuf, const proc_t *restrict const pp){
return help_pr_sig(outbuf, pp->sigignore);
}
static int pr_sigcatch(char *restrict const outbuf, const proc_t *restrict const pp){
return help_pr_sig(outbuf, pp->sigcatch);
}
////////////////////////////////////////////////////////////////////////////////
/*
* internal terms: ruid euid suid fuid
* kernel vars: uid euid suid fsuid
* command args: ruid uid svuid n/a
*/
static int pr_egid(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%d", pp->egid);
}
static int pr_rgid(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%d", pp->rgid);
}
static int pr_sgid(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%d", pp->sgid);
}
static int pr_fgid(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%d", pp->fgid);
}
static int pr_euid(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%d", pp->euid);
}
static int pr_ruid(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%d", pp->ruid);
}
static int pr_suid(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%d", pp->suid);
}
static int pr_fuid(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%d", pp->fuid);
}
// The Open Group Base Specifications Issue 6 (IEEE Std 1003.1, 2004 Edition)
// requires that user and group names print as decimal numbers if there is
// not enough room in the column. However, we will now truncate such names
// and provide a visual hint of such truncation. Hopefully, this will reduce
// the volume of bug reports regarding that former 'feature'.
//
// The UNIX and POSIX way to change column width is to rename it:
// ps -o pid,user=CumbersomeUserNames -o comm
// The easy way is to directly specify the desired width:
// ps -o pid,user:19,comm
//
static int do_pr_name(char *restrict const outbuf, const char *restrict const name, unsigned u){
if(!user_is_number){
int rightward = OUTBUF_SIZE; /* max cells */
int len; /* real cells */
escape_str(outbuf, name, OUTBUF_SIZE, &rightward);
len = OUTBUF_SIZE-rightward;
if(len <= (int)max_rightward)
return len; /* returns number of cells */
len = max_rightward-1;
outbuf[len++] = '+';
outbuf[len] = 0;
return len;
}
return snprintf(outbuf, COLWID, "%u", u);
}
static int pr_ruser(char *restrict const outbuf, const proc_t *restrict const pp){
return do_pr_name(outbuf, pp->ruser, pp->ruid);
}
static int pr_euser(char *restrict const outbuf, const proc_t *restrict const pp){
return do_pr_name(outbuf, pp->euser, pp->euid);
}
static int pr_fuser(char *restrict const outbuf, const proc_t *restrict const pp){
return do_pr_name(outbuf, pp->fuser, pp->fuid);
}
static int pr_suser(char *restrict const outbuf, const proc_t *restrict const pp){
return do_pr_name(outbuf, pp->suser, pp->suid);
}
static int pr_egroup(char *restrict const outbuf, const proc_t *restrict const pp){
return do_pr_name(outbuf, pp->egroup, pp->egid);
}
static int pr_rgroup(char *restrict const outbuf, const proc_t *restrict const pp){
return do_pr_name(outbuf, pp->rgroup, pp->rgid);
}
static int pr_fgroup(char *restrict const outbuf, const proc_t *restrict const pp){
return do_pr_name(outbuf, pp->fgroup, pp->fgid);
}
static int pr_sgroup(char *restrict const outbuf, const proc_t *restrict const pp){
return do_pr_name(outbuf, pp->sgroup, pp->sgid);
}
//////////////////////////////////////////////////////////////////////////////////
// PID pid, TGID tgid
static int pr_procs(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%u", pp->tgid);
}
// LWP lwp, SPID spid, TID tid
static int pr_tasks(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%u", pp->tid);
}
// thcount THCNT
static int pr_nlwp(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%d", pp->nlwp);
}
static int pr_sess(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%u", pp->session);
}
static int pr_supgid(char *restrict const outbuf, const proc_t *restrict const pp){
int rightward = max_rightward;
escaped_copy(outbuf, pp->supgid, OUTBUF_SIZE, &rightward);
return max_rightward-rightward;
}
static int pr_supgrp(char *restrict const outbuf, const proc_t *restrict const pp){
int rightward = max_rightward;
escaped_copy(outbuf, pp->supgrp, OUTBUF_SIZE, &rightward);
return max_rightward-rightward;
}
static int pr_tpgid(char *restrict const outbuf, const proc_t *restrict const pp){
return snprintf(outbuf, COLWID, "%d", pp->tpgid);
}
/* SGI uses "cpu" to print the processor ID with header "P" */
static int pr_sgi_p(char *restrict const outbuf, const proc_t *restrict const pp){ /* FIXME */
if(pp->state == 'R') return snprintf(outbuf, COLWID, "%d", pp->processor);
return snprintf(outbuf, COLWID, "*");
}
#ifdef WITH_SYSTEMD
/************************* Systemd stuff ********************************/
static int pr_sd_unit(char *restrict const outbuf, const proc_t *restrict const pp){
int r;
size_t len;
char *unit;
r = sd_pid_get_unit(pp->tgid, &unit);
if(r<0) goto fail;
len = snprintf(outbuf, COLWID, "%s", unit);
free(unit);
return len;
fail:
outbuf[0] = '-';
outbuf[1] = '\0';
return 1;
}
static int pr_sd_session(char *restrict const outbuf, const proc_t *restrict const pp){
int r;
size_t len;
char *session;
r = sd_pid_get_session(pp->tgid, &session);
if(r<0) goto fail;
len = snprintf(outbuf, COLWID, "%s", session);
free(session);
return len;
fail:
outbuf[0] = '-';
outbuf[1] = '\0';
return 1;
}
static int pr_sd_ouid(char *restrict const outbuf, const proc_t *restrict const pp){
int r;
size_t len;
uid_t ouid;
r = sd_pid_get_owner_uid(pp->tgid, &ouid);
if(r<0) goto fail;
return snprintf(outbuf, COLWID, "%d", ouid);
fail:
outbuf[0] = '-';
outbuf[1] = '\0';
return 1;
}
static int pr_sd_machine(char *restrict const outbuf, const proc_t *restrict const pp){
int r;
size_t len;
char *machine;
r = sd_pid_get_machine_name(pp->tgid, &machine);
if(r<0) goto fail;
len = snprintf(outbuf, COLWID, "%s", machine);
free(machine);
return len;
fail:
outbuf[0] = '-';
outbuf[1] = '\0';
return 1;
}
static int pr_sd_uunit(char *restrict const outbuf, const proc_t *restrict const pp){
int r;
size_t len;
char *unit;
r = sd_pid_get_user_unit(pp->tgid, &unit);
if(r<0) goto fail;
len = snprintf(outbuf, COLWID, "%s", unit);
free(unit);
return len;
fail:
outbuf[0] = '-';
outbuf[1] = '\0';
return 1;
}
static int pr_sd_seat(char *restrict const outbuf, const proc_t *restrict const pp){
int r;
size_t len;
char *session;
char *seat;
r = sd_pid_get_session(pp->tgid, &session);
if(r<0) goto fail;
r = sd_session_get_seat(session, &seat);
free(session);
if(r<0) goto fail;
len = snprintf(outbuf, COLWID, "%s", seat);
free(seat);
return len;
fail:
outbuf[0] = '-';
outbuf[1] = '\0';
return 1;
}
#endif
/****************** FLASK & seLinux security stuff **********************/
// move the bulk of this to libproc sometime
static int pr_context(char *restrict const outbuf, const proc_t *restrict const pp){
char filename[48];
size_t len;
ssize_t num_read;
int fd;
// wchan file is suitable for testing
//snprintf(filename, sizeof filename, "/proc/%d/wchan", pp->tgid);
snprintf(filename, sizeof filename, "/proc/%d/attr/current", pp->tgid);
fd = open(filename, O_RDONLY, 0);
if(likely(fd==-1)) goto fail;
num_read = read(fd, outbuf, 666);
close(fd);
if(unlikely(num_read<=0)) goto fail;
outbuf[num_read] = '\0';
len = 0;
while(outbuf[len]>' ' && outbuf[len]<='~') len++;
outbuf[len] = '\0';
if(len) return len;
fail:
outbuf[0] = '-';
outbuf[1] = '\0';
return 1;
}
#if 0
// This needs more study, considering:
// 1. the static linking option (maybe disable this in that case)
// 2. the -z and -Z option issue
// 3. width of output
static int pr_context(char *restrict const outbuf, const proc_t *restrict const pp){
static int (*ps_getpidcon)(pid_t pid, char **context) = 0;
static int tried_load = 0;
size_t len;
char *context;
if(!ps_getpidcon && !tried_load){
void *handle = dlopen("libselinux.so.1", RTLD_NOW);
if(handle){
dlerror();
ps_getpidcon = dlsym(handle, "getpidcon");
if(dlerror())
ps_getpidcon = 0;
}
tried_load++;
}
if(ps_getpidcon && !ps_getpidcon(pp->tgid, &context)){
size_t max_len = OUTBUF_SIZE-1;
len = strlen(context);
if(len > max_len) len = max_len;
memcpy(outbuf, context, len);
outbuf[len] = '\0';
free(context);
}else{
outbuf[0] = '-';
outbuf[1] = '\0';
len = 1;
}
return len;
}
#endif
////////////////////////////// Test code /////////////////////////////////
// like "args"
static int pr_t_unlimited(char *restrict const outbuf, const proc_t *restrict const pp){
static const char *const vals[] = {"[123456789-12345] <defunct>","ps","123456789-123456"};
(void)pp;
snprintf(outbuf, max_rightward+1, "%s", vals[lines_to_next_header%3u]);
return strlen(outbuf);
}
static int pr_t_unlimited2(char *restrict const outbuf, const proc_t *restrict const pp){
static const char *const vals[] = {"unlimited", "[123456789-12345] <defunct>","ps","123456789-123456"};
(void)pp;
snprintf(outbuf, max_rightward+1, "%s", vals[lines_to_next_header%4u]);
return strlen(outbuf);
}
// like "etime"
static int pr_t_right(char *restrict const outbuf, const proc_t *restrict const pp){
static const char *const vals[] = {"999-23:59:59","99-23:59:59","9-23:59:59","59:59"};
(void)pp;
return snprintf(outbuf, COLWID, "%s", vals[lines_to_next_header%4u]);
}
static int pr_t_right2(char *restrict const outbuf, const proc_t *restrict const pp){
static const char *const vals[] = {"999-23:59:59","99-23:59:59","9-23:59:59"};
(void)pp;
return snprintf(outbuf, COLWID, "%s", vals[lines_to_next_header%3u]);
}
// like "tty"
static int pr_t_left(char *restrict const outbuf, const proc_t *restrict const pp){
static const char *const vals[] = {"tty7","pts/9999","iseries/vtty42","ttySMX0","3270/tty4"};
(void)pp;
return snprintf(outbuf, COLWID, "%s", vals[lines_to_next_header%5u]);
}
static int pr_t_left2(char *restrict const outbuf, const proc_t *restrict const pp){
static const char *const vals[] = {"tty7","pts/9999","ttySMX0","3270/tty4"};
(void)pp;
return snprintf(outbuf, COLWID, "%s", vals[lines_to_next_header%4u]);
}
/***************************************************************************/
/*************************** 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)
*/
/* Justification control for flags field. */
#define USER CF_USER // left if text, right if numeric
#define LEFT CF_LEFT
#define RIGHT CF_RIGHT
#define UNLIMITED CF_UNLIMITED
#define WCHAN CF_WCHAN // left if text, right if numeric
#define SIGNAL CF_SIGNAL // right in 9, or 16 if room
#define PIDMAX CF_PIDMAX
#define TO CF_PRINT_THREAD_ONLY
#define PO CF_PRINT_PROCESS_ONLY
#define ET CF_PRINT_EVERY_TIME
#define AN CF_PRINT_AS_NEEDED // no idea
/* short names to save space */
#define MEM PROC_FILLMEM /* read statm */
#define ARG PROC_FILLARG /* read cmdline (cleared if c option) */
#define COM PROC_FILLCOM /* read cmdline (cleared if not -f option) */
#define ENV PROC_FILLENV /* read environ */
#define USR PROC_FILLUSR /* uid_t -> user names */
#define GRP PROC_FILLGRP /* gid_t -> group names */
#define WCH PROC_FILLWCHAN /* do WCHAN lookup */
#define SGRP PROC_FILLSTATUS | PROC_FILLSUPGRP /* supgid -> supgrp (names) */
#define CGRP PROC_FILLCGROUP | PROC_EDITCGRPCVT /* read cgroup */
/* 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 211 listed */
/* Many of these are placeholders for unsupported options. */
static const format_struct format_array[] = {
/* code header print() sort() width need vendor flags */
{"%cpu", "%CPU", pr_pcpu, sr_pcpu, 4, 0, BSD, ET|RIGHT}, /*pcpu*/
{"%mem", "%MEM", pr_pmem, sr_rss, 4, 0, BSD, PO|RIGHT}, /*pmem*/
{"_left", "LLLLLLLL", pr_t_left, sr_nop, 8, 0, TST, ET|LEFT},
{"_left2", "L2L2L2L2", pr_t_left2, sr_nop, 8, 0, TST, ET|LEFT},
{"_right", "RRRRRRRRRRR", pr_t_right, sr_nop, 11, 0, TST, ET|RIGHT},
{"_right2", "R2R2R2R2R2R", pr_t_right2, sr_nop, 11, 0, TST, ET|RIGHT},
{"_unlimited","U", pr_t_unlimited, sr_nop, 16, 0, TST, ET|UNLIMITED},
{"_unlimited2","U2", pr_t_unlimited2, sr_nop, 16, 0, TST, ET|UNLIMITED},
{"acflag", "ACFLG", pr_nop, sr_nop, 5, 0, XXX, AN|RIGHT}, /*acflg*/
{"acflg", "ACFLG", pr_nop, sr_nop, 5, 0, BSD, AN|RIGHT}, /*acflag*/
{"addr", "ADDR", pr_nop, sr_nop, 4, 0, XXX, AN|RIGHT},
{"addr_1", "ADDR", pr_nop, sr_nop, 1, 0, LNX, AN|LEFT},
{"alarm", "ALARM", pr_alarm, sr_alarm, 5, 0, LNX, AN|RIGHT},
{"argc", "ARGC", pr_nop, sr_nop, 4, 0, LNX, PO|RIGHT},
{"args", "COMMAND", pr_args, sr_cmd, 27, ARG, U98, PO|UNLIMITED}, /*command*/
{"atime", "TIME", pr_time, sr_time, 8, 0, SOE, ET|RIGHT}, /*cputime*/ /* was 6 wide */
{"blocked", "BLOCKED", pr_sigmask, sr_nop, 9, 0, BSD, TO|SIGNAL}, /*sigmask*/
{"bnd", "BND", pr_nop, sr_nop, 1, 0, AIX, TO|RIGHT},
{"bsdstart", "START", pr_bsdstart, sr_nop, 6, 0, LNX, ET|RIGHT},
{"bsdtime", "TIME", pr_bsdtime, sr_nop, 6, 0, LNX, ET|RIGHT},
{"c", "C", pr_c, sr_pcpu, 2, 0, SUN, ET|RIGHT},
{"caught", "CAUGHT", pr_sigcatch, sr_nop, 9, 0, BSD, TO|SIGNAL}, /*sigcatch*/
{"cgroup", "CGROUP", pr_cgroup, sr_nop, 27,CGRP, LNX, PO|UNLIMITED},
{"class", "CLS", pr_class, sr_sched, 3, 0, XXX, TO|LEFT},
{"cls", "CLS", pr_class, sr_sched, 3, 0, HPU, TO|RIGHT}, /*says HPUX or RT*/
{"cmaj_flt", "-", pr_nop, sr_cmaj_flt, 1, 0, LNX, AN|RIGHT},
{"cmd", "CMD", pr_args, sr_cmd, 27, ARG, DEC, PO|UNLIMITED}, /*ucomm*/
{"cmin_flt", "-", pr_nop, sr_cmin_flt, 1, 0, LNX, AN|RIGHT},
{"cnswap", "-", pr_nop, sr_nop, 1, 0, LNX, AN|RIGHT},
{"comm", "COMMAND", pr_comm, sr_cmd, 15, COM, U98, PO|UNLIMITED}, /*ucomm*/
{"command", "COMMAND", pr_args, sr_cmd, 27, ARG, XXX, PO|UNLIMITED}, /*args*/
{"context", "CONTEXT", pr_context, sr_nop, 31, 0, LNX, ET|LEFT},
{"cp", "CP", pr_cp, sr_pcpu, 3, 0, DEC, ET|RIGHT}, /*cpu*/
{"cpu", "CPU", pr_nop, sr_nop, 3, 0, BSD, AN|RIGHT}, /* FIXME ... HP-UX wants this as the CPU number for SMP? */
{"cpuid", "CPUID", pr_psr, sr_nop, 5, 0, BSD, TO|RIGHT}, // OpenBSD: 8 wide!
{"cputime", "TIME", pr_time, sr_time, 8, 0, DEC, ET|RIGHT}, /*time*/
{"ctid", "CTID", pr_nop, sr_nop, 5, 0, SUN, ET|RIGHT}, // resource contracts?
{"cursig", "CURSIG", pr_nop, sr_nop, 6, 0, DEC, AN|RIGHT},
{"cutime", "-", pr_nop, sr_cutime, 1, 0, LNX, AN|RIGHT},
{"cwd", "CWD", pr_nop, sr_nop, 3, 0, LNX, AN|LEFT},
{"drs", "DRS", pr_drs, sr_drs, 5, MEM, LNX, PO|RIGHT},
{"dsiz", "DSIZ", pr_dsiz, sr_nop, 4, 0, LNX, PO|RIGHT},
{"egid", "EGID", pr_egid, sr_egid, 5, 0, LNX, ET|RIGHT},
{"egroup", "EGROUP", pr_egroup, sr_egroup, 8, GRP, LNX, ET|USER},
{"eip", "EIP", pr_eip, sr_kstk_eip, 8, 0, LNX, TO|RIGHT},
{"emul", "EMUL", pr_nop, sr_nop, 13, 0, BSD, PO|LEFT}, /* "FreeBSD ELF32" and such */
{"end_code", "E_CODE", pr_nop, sr_end_code, 8, 0, LNx, PO|RIGHT},
{"environ","ENVIRONMENT",pr_nop, sr_nop, 11, ENV, LNx, PO|UNLIMITED},
{"esp", "ESP", pr_esp, sr_kstk_esp, 8, 0, LNX, TO|RIGHT},
{"etime", "ELAPSED", pr_etime, sr_etime, 11, 0, U98, ET|RIGHT}, /* was 7 wide */
{"etimes", "ELAPSED", pr_etimes, sr_nop, 7, 0, BSD, ET|RIGHT}, /* FreeBSD */
{"euid", "EUID", pr_euid, sr_euid, 5, 0, LNX, ET|RIGHT},
{"euser", "EUSER", pr_euser, sr_euser, 8, USR, LNX, ET|USER},
{"f", "F", pr_flag, sr_flags, 1, 0, XXX, ET|RIGHT}, /*flags*/
{"fgid", "FGID", pr_fgid, sr_fgid, 5, 0, LNX, ET|RIGHT},
{"fgroup", "FGROUP", pr_fgroup, sr_fgroup, 8, GRP, LNX, ET|USER},
{"flag", "F", pr_flag, sr_flags, 1, 0, DEC, ET|RIGHT},
{"flags", "F", pr_flag, sr_flags, 1, 0, BSD, ET|RIGHT}, /*f*/ /* was FLAGS, 8 wide */
{"fname", "COMMAND", pr_fname, sr_nop, 8, 0, SUN, PO|LEFT},
{"fsgid", "FSGID", pr_fgid, sr_fgid, 5, 0, LNX, ET|RIGHT},
{"fsgroup", "FSGROUP", pr_fgroup, sr_fgroup, 8, GRP, LNX, ET|USER},
{"fsuid", "FSUID", pr_fuid, sr_fuid, 5, 0, LNX, ET|RIGHT},
{"fsuser", "FSUSER", pr_fuser, sr_fuser, 8, USR, LNX, ET|USER},
{"fuid", "FUID", pr_fuid, sr_fuid, 5, 0, LNX, ET|RIGHT},
{"fuser", "FUSER", pr_fuser, sr_fuser, 8, USR, LNX, ET|USER},
{"gid", "GID", pr_egid, sr_egid, 5, 0, SUN, ET|RIGHT},
{"group", "GROUP", pr_egroup, sr_egroup, 8, GRP, U98, ET|USER},
{"ignored", "IGNORED", pr_sigignore,sr_nop, 9, 0, BSD, TO|SIGNAL}, /*sigignore*/
{"inblk", "INBLK", pr_nop, sr_nop, 5, 0, BSD, AN|RIGHT}, /*inblock*/
{"inblock", "INBLK", pr_nop, sr_nop, 5, 0, DEC, AN|RIGHT}, /*inblk*/
{"intpri", "PRI", pr_opri, sr_priority, 3, 0, HPU, TO|RIGHT},
{"jid", "JID", pr_nop, sr_nop, 1, 0, SGI, PO|RIGHT},
{"jobc", "JOBC", pr_nop, sr_nop, 4, 0, XXX, AN|RIGHT},
{"ktrace", "KTRACE", pr_nop, sr_nop, 8, 0, BSD, AN|RIGHT},
{"ktracep", "KTRACEP", pr_nop, sr_nop, 8, 0, BSD, AN|RIGHT},
{"label", "LABEL", pr_context, sr_nop, 31, 0, SGI, ET|LEFT},
{"lastcpu", "C", pr_psr, sr_nop, 3, 0, BSD, TO|RIGHT}, // DragonFly
{"lim", "LIM", pr_lim, sr_rss_rlim, 5, 0, BSD, AN|RIGHT},
{"login", "LOGNAME", pr_nop, sr_nop, 8, 0, BSD, AN|LEFT}, /*logname*/ /* double check */
{"logname", "LOGNAME", pr_nop, sr_nop, 8, 0, XXX, AN|LEFT}, /*login*/
{"longtname", "TTY", pr_tty8, sr_tty, 8, 0, DEC, PO|LEFT},
{"lstart", "STARTED", pr_lstart, sr_nop, 24, 0, XXX, ET|RIGHT},
{"luid", "LUID", pr_nop, sr_nop, 5, 0, LNX, ET|RIGHT}, /* login ID */
{"luser", "LUSER", pr_nop, sr_nop, 8, USR, LNX, ET|USER}, /* login USER */
{"lwp", "LWP", pr_tasks, sr_tasks, 5, 0, SUN, TO|PIDMAX|RIGHT},
{"m_drs", "DRS", pr_drs, sr_drs, 5, MEM, LNx, PO|RIGHT},
{"m_dt", "DT", pr_nop, sr_dt, 4, MEM, LNx, PO|RIGHT},
{"m_lrs", "LRS", pr_nop, sr_lrs, 5, MEM, LNx, PO|RIGHT},
{"m_resident", "RES", pr_nop, sr_resident, 5,MEM, LNx, PO|RIGHT},
{"m_share", "SHRD", pr_nop, sr_share, 5, MEM, LNx, PO|RIGHT},
{"m_size", "SIZE", pr_size, sr_size, 5, MEM, LNX, PO|RIGHT},
{"m_swap", "SWAP", pr_nop, sr_nop, 5, 0, LNx, PO|RIGHT},
{"m_trs", "TRS", pr_trs, sr_trs, 5, MEM, LNx, PO|RIGHT},
{"maj_flt", "MAJFL", pr_majflt, sr_maj_flt, 6, 0, LNX, AN|RIGHT},
{"majflt", "MAJFLT", pr_majflt, sr_maj_flt, 6, 0, XXX, AN|RIGHT},
{"min_flt", "MINFL", pr_minflt, sr_min_flt, 6, 0, LNX, AN|RIGHT},
{"minflt", "MINFLT", pr_minflt, sr_min_flt, 6, 0, XXX, AN|RIGHT},
{"msgrcv", "MSGRCV", pr_nop, sr_nop, 6, 0, XXX, AN|RIGHT},
{"msgsnd", "MSGSND", pr_nop, sr_nop, 6, 0, XXX, AN|RIGHT},
{"mwchan", "MWCHAN", pr_nop, sr_nop, 6, WCH, BSD, TO|WCHAN}, /* mutex (FreeBSD) */
{"ni", "NI", pr_nice, sr_nice, 3, 0, BSD, TO|RIGHT}, /*nice*/
{"nice", "NI", pr_nice, sr_nice, 3, 0, U98, TO|RIGHT}, /*ni*/
{"nivcsw", "IVCSW", pr_nop, sr_nop, 5, 0, XXX, AN|RIGHT},
{"nlwp", "NLWP", pr_nlwp, sr_nlwp, 4, 0, SUN, PO|RIGHT},
{"nsignals", "NSIGS", pr_nop, sr_nop, 5, 0, DEC, AN|RIGHT}, /*nsigs*/
{"nsigs", "NSIGS", pr_nop, sr_nop, 5, 0, BSD, AN|RIGHT}, /*nsignals*/
{"nswap", "NSWAP", pr_nop, sr_nop, 5, 0, XXX, AN|RIGHT},
{"nvcsw", "VCSW", pr_nop, sr_nop, 5, 0, XXX, AN|RIGHT},
{"nwchan", "WCHAN", pr_nwchan, sr_nop, 6, 0, XXX, TO|RIGHT},
{"opri", "PRI", pr_opri, sr_priority, 3, 0, SUN, TO|RIGHT},
{"osz", "SZ", pr_nop, sr_nop, 2, 0, SUN, PO|RIGHT},
{"oublk", "OUBLK", pr_nop, sr_nop, 5, 0, BSD, AN|RIGHT}, /*oublock*/
{"oublock", "OUBLK", pr_nop, sr_nop, 5, 0, DEC, AN|RIGHT}, /*oublk*/
{"p_ru", "P_RU", pr_nop, sr_nop, 6, 0, BSD, AN|RIGHT},
{"paddr", "PADDR", pr_nop, sr_nop, 6, 0, BSD, AN|RIGHT},
{"pagein", "PAGEIN", pr_majflt, sr_maj_flt, 6, 0, XXX, AN|RIGHT},
{"pcpu", "%CPU", pr_pcpu, sr_pcpu, 4, 0, U98, ET|RIGHT}, /*%cpu*/
{"pending", "PENDING", pr_sig, sr_nop, 9, 0, BSD, ET|SIGNAL}, /*sig*/
{"pgid", "PGID", pr_pgid, sr_pgrp, 5, 0, U98, PO|PIDMAX|RIGHT},
{"pgrp", "PGRP", pr_pgid, sr_pgrp, 5, 0, LNX, PO|PIDMAX|RIGHT},
{"pid", "PID", pr_procs, sr_procs, 5, 0, U98, PO|PIDMAX|RIGHT},
{"pmem", "%MEM", pr_pmem, sr_rss, 4, 0, XXX, PO|RIGHT}, /*%mem*/
{"poip", "-", pr_nop, sr_nop, 1, 0, BSD, AN|RIGHT},
{"policy", "POL", pr_class, sr_sched, 3, 0, DEC, TO|LEFT},
{"ppid", "PPID", pr_ppid, sr_ppid, 5, 0, U98, PO|PIDMAX|RIGHT},
{"pri", "PRI", pr_pri, sr_nop, 3, 0, XXX, TO|RIGHT},
{"pri_api", "API", pr_pri_api, sr_nop, 3, 0, LNX, TO|RIGHT},
{"pri_bar", "BAR", pr_pri_bar, sr_nop, 3, 0, LNX, TO|RIGHT},
{"pri_baz", "BAZ", pr_pri_baz, sr_nop, 3, 0, LNX, TO|RIGHT},
{"pri_foo", "FOO", pr_pri_foo, sr_nop, 3, 0, LNX, TO|RIGHT},
{"priority", "PRI", pr_priority, sr_priority, 3, 0, LNX, TO|RIGHT},
{"prmgrp", "PRMGRP", pr_nop, sr_nop, 12, 0, HPU, PO|RIGHT},
{"prmid", "PRMID", pr_nop, sr_nop, 12, 0, HPU, PO|RIGHT},
{"project", "PROJECT", pr_nop, sr_nop, 12, 0, SUN, PO|LEFT}, // see prm* andctid
{"projid", "PROJID", pr_nop, sr_nop, 5, 0, SUN, PO|RIGHT},
{"pset", "PSET", pr_nop, sr_nop, 4, 0, DEC, TO|RIGHT},
{"psr", "PSR", pr_psr, sr_nop, 3, 0, DEC, TO|RIGHT},
{"psxpri", "PPR", pr_nop, sr_nop, 3, 0, DEC, TO|RIGHT},
{"re", "RE", pr_nop, sr_nop, 3, 0, BSD, AN|RIGHT},
{"resident", "RES", pr_nop, sr_resident, 5,MEM, LNX, PO|RIGHT},
{"rgid", "RGID", pr_rgid, sr_rgid, 5, 0, XXX, ET|RIGHT},
{"rgroup", "RGROUP", pr_rgroup, sr_rgroup, 8, GRP, U98, ET|USER}, /* was 8 wide */
{"rlink", "RLINK", pr_nop, sr_nop, 8, 0, BSD, AN|RIGHT},
{"rss", "RSS", pr_rss, sr_rss, 5, 0, XXX, PO|RIGHT}, /* was 5 wide */
{"rssize", "RSS", pr_rss, sr_vm_rss, 5, 0, DEC, PO|RIGHT}, /*rsz*/
{"rsz", "RSZ", pr_rss, sr_vm_rss, 5, 0, BSD, PO|RIGHT}, /*rssize*/
{"rtprio", "RTPRIO", pr_rtprio, sr_rtprio, 6, 0, BSD, TO|RIGHT},
{"ruid", "RUID", pr_ruid, sr_ruid, 5, 0, XXX, ET|RIGHT},
{"ruser", "RUSER", pr_ruser, sr_ruser, 8, USR, U98, ET|USER},
{"s", "S", pr_s, sr_state, 1, 0, SUN, TO|LEFT}, /*stat,state*/
{"sched", "SCH", pr_sched, sr_sched, 3, 0, AIX, TO|RIGHT},
{"scnt", "SCNT", pr_nop, sr_nop, 4, 0, DEC, AN|RIGHT}, /* man page misspelling of scount? */
{"scount", "SC", pr_nop, sr_nop, 4, 0, AIX, AN|RIGHT}, /* scnt==scount, DEC claims both */
#ifdef WITH_SYSTEMD
{"sd_machine","MACHINE", pr_sd_machine, sr_nop, 31, 0, LNX, ET|LEFT},
{"sd_ouid", "OWNER", pr_sd_ouid, sr_nop, 5, 0, LNX, ET|LEFT},
{"sd_seat", "SEAT", pr_sd_seat, sr_nop, 11, 0, LNX, ET|LEFT},
{"sd_session","SESSION", pr_sd_session, sr_nop, 11, 0, LNX, ET|LEFT},
{"sd_unit", "UNIT", pr_sd_unit, sr_nop, 31, 0, LNX, ET|LEFT},
{"sd_uunit", "UUNIT", pr_sd_uunit, sr_nop, 31, 0, LNX, ET|LEFT},
#endif
{"sess", "SESS", pr_sess, sr_session, 5, 0, XXX, PO|PIDMAX|RIGHT},
{"session", "SESS", pr_sess, sr_session, 5, 0, LNX, PO|PIDMAX|RIGHT},
{"sgi_p", "P", pr_sgi_p, sr_nop, 1, 0, LNX, TO|RIGHT}, /* "cpu" number */
{"sgi_rss", "RSS", pr_rss, sr_nop, 4, 0, LNX, PO|LEFT}, /* SZ:RSS */
{"sgid", "SGID", pr_sgid, sr_sgid, 5, 0, LNX, ET|RIGHT},
{"sgroup", "SGROUP", pr_sgroup, sr_sgroup, 8, GRP, LNX, ET|USER},
{"share", "-", pr_nop, sr_share, 1, MEM, LNX, PO|RIGHT},
{"sid", "SID", pr_sess, sr_session, 5, 0, XXX, PO|PIDMAX|RIGHT}, /* Sun & HP */
{"sig", "PENDING", pr_sig, sr_nop, 9, 0, XXX, ET|SIGNAL}, /*pending -- Dragonfly uses this for whole-proc and "tsig" for thread */
{"sig_block", "BLOCKED", pr_sigmask, sr_nop, 9, 0, LNX, TO|SIGNAL},
{"sig_catch", "CATCHED", pr_sigcatch, sr_nop, 9, 0, LNX, TO|SIGNAL},
{"sig_ignore", "IGNORED",pr_sigignore, sr_nop, 9, 0, LNX, TO|SIGNAL},
{"sig_pend", "SIGNAL", pr_sig, sr_nop, 9, 0, LNX, ET|SIGNAL},
{"sigcatch", "CAUGHT", pr_sigcatch, sr_nop, 9, 0, XXX, TO|SIGNAL}, /*caught*/
{"sigignore", "IGNORED", pr_sigignore,sr_nop, 9, 0, XXX, TO|SIGNAL}, /*ignored*/
{"sigmask", "BLOCKED", pr_sigmask, sr_nop, 9, 0, XXX, TO|SIGNAL}, /*blocked*/
{"size", "SIZE", pr_swapable, sr_swapable, 5, 0, SCO, PO|RIGHT},
{"sl", "SL", pr_nop, sr_nop, 3, 0, XXX, AN|RIGHT},
{"spid", "SPID", pr_tasks, sr_tasks, 5, 0, SGI, TO|PIDMAX|RIGHT},
{"stackp", "STACKP", pr_stackp, sr_start_stack, 8, 0, LNX, PO|RIGHT}, /*start_stack*/
{"start", "STARTED", pr_start, sr_nop, 8, 0, XXX, ET|RIGHT},
{"start_code", "S_CODE", pr_nop, sr_start_code, 8, 0, LNx, PO|RIGHT},
{"start_stack", "STACKP", pr_stackp, sr_start_stack, 8, 0, LNX, PO|RIGHT}, /*stackp*/
{"start_time", "START", pr_stime, sr_start_time, 5, 0, LNx, ET|RIGHT},
{"stat", "STAT", pr_stat, sr_state, 4, 0, BSD, TO|LEFT}, /*state,s*/
{"state", "S", pr_s, sr_state, 1, 0, XXX, TO|LEFT}, /*stat,s*/ /* was STAT */
{"status", "STATUS", pr_nop, sr_nop, 6, 0, DEC, AN|RIGHT},
{"stime", "STIME", pr_stime, sr_stime, 5, 0, XXX, ET|RIGHT}, /* was 6 wide */
{"suid", "SUID", pr_suid, sr_suid, 5, 0, LNx, ET|RIGHT},
{"supgid", "SUPGID", pr_supgid, sr_nop, 20, 0, LNX, PO|UNLIMITED},
{"supgrp", "SUPGRP", pr_supgrp, sr_nop, 40,SGRP, LNX, PO|UNLIMITED},
{"suser", "SUSER", pr_suser, sr_suser, 8, USR, LNx, ET|USER},
{"svgid", "SVGID", pr_sgid, sr_sgid, 5, 0, XXX, ET|RIGHT},
{"svgroup", "SVGROUP", pr_sgroup, sr_sgroup, 8, GRP, LNX, ET|USER},
{"svuid", "SVUID", pr_suid, sr_suid, 5, 0, XXX, ET|RIGHT},
{"svuser", "SVUSER", pr_suser, sr_suser, 8, USR, LNX, ET|USER},
{"systime", "SYSTEM", pr_nop, sr_nop, 6, 0, DEC, ET|RIGHT},
{"sz", "SZ", pr_sz, sr_nop, 5, 0, HPU, PO|RIGHT},
{"taskid", "TASKID", pr_nop, sr_nop, 5, 0, SUN, TO|PIDMAX|RIGHT}, // is this a thread ID?
{"tdev", "TDEV", pr_nop, sr_nop, 4, 0, XXX, AN|RIGHT},
{"thcount", "THCNT", pr_nlwp, sr_nlwp, 5, 0, AIX, PO|RIGHT},
{"tgid", "TGID", pr_procs, sr_procs, 5, 0, LNX, PO|PIDMAX|RIGHT},
{"tid", "TID", pr_tasks, sr_tasks, 5, 0, AIX, TO|PIDMAX|RIGHT},
{"time", "TIME", pr_time, sr_time, 8, 0, U98, ET|RIGHT}, /*cputime*/ /* was 6 wide */
{"timeout", "TMOUT", pr_nop, sr_nop, 5, 0, LNX, AN|RIGHT}, // 2.0.xx era
{"tmout", "TMOUT", pr_nop, sr_nop, 5, 0, LNX, AN|RIGHT}, // 2.0.xx era
{"tname", "TTY", pr_tty8, sr_tty, 8, 0, DEC, PO|LEFT},
{"tpgid", "TPGID", pr_tpgid, sr_tpgid, 5, 0, XXX, PO|PIDMAX|RIGHT},
{"trs", "TRS", pr_trs, sr_trs, 4, MEM, AIX, PO|RIGHT},
{"trss", "TRSS", pr_trs, sr_trs, 4, MEM, BSD, PO|RIGHT}, /* 4.3BSD NET/2 */
{"tsess", "TSESS", pr_nop, sr_nop, 5, 0, BSD, PO|PIDMAX|RIGHT},
{"tsession", "TSESS", pr_nop, sr_nop, 5, 0, DEC, PO|PIDMAX|RIGHT},
{"tsid", "TSID", pr_nop, sr_nop, 5, 0, BSD, PO|PIDMAX|RIGHT},
{"tsig", "PENDING", pr_tsig, sr_nop, 9, 0, BSD, ET|SIGNAL}, /* Dragonfly used this for thread-specific, and "sig" for whole-proc */
{"tsiz", "TSIZ", pr_tsiz, sr_nop, 4, 0, BSD, PO|RIGHT},
{"tt", "TT", pr_tty8, sr_tty, 8, 0, BSD, PO|LEFT},
{"tty", "TT", pr_tty8, sr_tty, 8, 0, U98, PO|LEFT}, /* Unix98 requires "TT" but has "TTY" too. :-( */ /* was 3 wide */
{"tty4", "TTY", pr_tty4, sr_tty, 4, 0, LNX, PO|LEFT},
{"tty8", "TTY", pr_tty8, sr_tty, 8, 0, LNX, PO|LEFT},
{"u_procp", "UPROCP", pr_nop, sr_nop, 6, 0, DEC, AN|RIGHT},
{"ucmd", "CMD", pr_comm, sr_cmd, 15, COM, DEC, PO|UNLIMITED}, /*ucomm*/
{"ucomm", "COMMAND", pr_comm, sr_cmd, 15, COM, XXX, PO|UNLIMITED}, /*comm*/
{"uid", "UID", pr_euid, sr_euid, 5, 0, XXX, ET|RIGHT},
{"uid_hack", "UID", pr_euser, sr_euser, 8, USR, XXX, ET|USER},
{"umask", "UMASK", pr_nop, sr_nop, 5, 0, DEC, AN|RIGHT},
{"uname", "USER", pr_euser, sr_euser, 8, USR, DEC, ET|USER}, /* man page misspelling of user? */
{"upr", "UPR", pr_nop, sr_nop, 3, 0, BSD, TO|RIGHT}, /*usrpri*/
{"uprocp", "UPROCP", pr_nop, sr_nop, 8, 0, BSD, AN|RIGHT},
{"user", "USER", pr_euser, sr_euser, 8, USR, U98, ET|USER}, /* BSD n forces this to UID */
{"usertime", "USER", pr_nop, sr_nop, 4, 0, DEC, ET|RIGHT},
{"usrpri", "UPR", pr_nop, sr_nop, 3, 0, DEC, TO|RIGHT}, /*upr*/
{"util", "C", pr_c, sr_pcpu, 2, 0, SGI, ET|RIGHT}, // not sure about "C"
{"utime", "UTIME", pr_nop, sr_utime, 6, 0, LNx, ET|RIGHT},
{"vm_data", "DATA", pr_nop, sr_vm_data, 5, 0, LNx, PO|RIGHT},
{"vm_exe", "EXE", pr_nop, sr_vm_exe, 5, 0, LNx, PO|RIGHT},
{"vm_lib", "LIB", pr_nop, sr_vm_lib, 5, 0, LNx, PO|RIGHT},
{"vm_lock", "LCK", pr_nop, sr_vm_lock, 3, 0, LNx, PO|RIGHT},
{"vm_stack", "STACK", pr_nop, sr_vm_stack, 5, 0, LNx, PO|RIGHT},
{"vsize", "VSZ", pr_vsz, sr_vsize, 6, 0, DEC, PO|RIGHT}, /*vsz*/
{"vsz", "VSZ", pr_vsz, sr_vm_size, 6, 0, U98, PO|RIGHT}, /*vsize*/
{"wchan", "WCHAN", pr_wchan, sr_wchan, 6, WCH, XXX, TO|WCHAN}, /* BSD n forces this to nwchan */ /* was 10 wide */
{"wname", "WCHAN", pr_wname, sr_nop, 6, WCH, SGI, TO|WCHAN}, /* opposite of nwchan */
{"xstat", "XSTAT", pr_nop, sr_nop, 5, 0, BSD, AN|RIGHT},
{"zone", "ZONE", pr_context, sr_nop, 31, 0, SUN, ET|LEFT}, // Solaris zone == Linux context?
{"zoneid", "ZONEID", pr_nop, sr_nop, 31, 0, SUN, ET|RIGHT},// Linux only offers context names
{"~", "-", pr_nop, sr_nop, 1, 0, LNX, AN|RIGHT} /* NULL would ruin alphabetical order */
};
#undef USER
#undef LEFT
#undef RIGHT
#undef UNLIMITED
#undef WCHAN
#undef SIGNAL
#undef PIDMAX
#undef PO
#undef TO
#undef AN
#undef ET
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 */
{"FLASK_context", "pid,context,command"}, /* Flask Linux context, --context */
{"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(((const format_struct*)a)->spec,((const format_struct*)b)->spec);
}
static int compare_macro_structs(const void *a, const void *b){
return strcmp(((const macro_struct*)a)->spec,((const 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) & CF_JUST_MASK){
default:
total += walk->width;
total += was_normal;
was_normal = 1;
break;
case CF_SIGNAL:
sigs++;
total += walk->width;
total += was_normal;
was_normal = 1;
break;
case CF_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);
}
/********** show one process (NULL proc prints header) **********/
//#define SPACE_AMOUNT page_size
#define SPACE_AMOUNT 144
static char *saved_outbuf;
void show_one_proc(const proc_t *restrict const p, const format_node *restrict fmt){
/* 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 */
int sz = 0; /* real size of data in outbuffer */
int tmpspace = 0;
char *restrict const outbuf = saved_outbuf;
static int did_stuff = 0; /* have we ever printed anything? */
if(unlikely(-1==(long)p)){ /* true only once, at the end */
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,fmt);
}
/* fprintf(stderr, "No processes available.\n"); */ /* legal? */
exit(1);
}
if(likely(p)){ /* not header, maybe we should call ourselves for it */
if(unlikely(!--lines_to_next_header)){
lines_to_next_header = header_gap;
show_one_proc(NULL,fmt);
}
}
did_stuff = 1;
if(unlikely(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(likely(fmt->next)) max_rightward = fmt->width;
// else max_rightward = active_cols-((correct>actual) ? correct : actual);
if(likely(fmt->next)){
max_rightward = fmt->width;
tmpspace = 0;
}else{
tmpspace = correct-actual;
if (tmpspace<1){
tmpspace = dospace;
max_rightward = active_cols-actual-tmpspace;
}else{
max_rightward = active_cols - ( (correct>actual) ? correct : actual );
}
}
max_leftward = fmt->width + actual - correct; /* TODO check this */
// fprintf(stderr, "cols: %d, max_rightward: %d, max_leftward: %d, actual: %d, correct: %d\n",
// active_cols, max_rightward, max_leftward, actual, correct);
/* prepare data and calculate leftpad */
if(likely(p) && likely(fmt->pr)) amount = (*fmt->pr)(outbuf,p);
else amount = strlen(strcpy(outbuf, fmt->name)); /* AIX or headers */
switch((fmt->flags) & CF_JUST_MASK){
case 0: /* for AIX, assigned outside this file */
leftpad = 0;
break;
case CF_LEFT: /* bad */
leftpad = 0;
break;
case CF_RIGHT: /* OK */
leftpad = fmt->width - amount;
if(leftpad < 0) leftpad = 0;
break;
case CF_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 CF_USER: /* bad */
leftpad = fmt->width - amount;
if(leftpad < 0) leftpad = 0;
if(!user_is_number) leftpad = 0;
break;
case CF_WCHAN: /* bad */
if(wchan_is_number){
leftpad = fmt->width - amount;
if(leftpad < 0) leftpad = 0;
break;
}else{
if ((active_cols-actual-tmpspace)<1)
outbuf[1] = '\0'; /* oops, we (mostly) lose this column... */
leftpad = 0;
break;
}
case CF_UNLIMITED:
{
if(active_cols-actual-tmpspace < 1)
outbuf[1] = '\0'; /* oops, we (mostly) lose this column... */
leftpad = 0;
break;
}
default:
fprintf(stderr, _("bad alignment code\n"));
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(unlikely(space>SPACE_AMOUNT)) space=SPACE_AMOUNT; // only so much available
/* real size -- don't forget in 'amount' is number of cells */
sz = strlen(outbuf);
/* print data, set x position stuff */
if(unlikely(!fmt->next)){
/* Last column. Write padding + data + newline all together. */
outbuf[sz] = '\n';
fwrite(outbuf-space, space+sz+1, 1, stdout);
break;
}
/* Not the last column. Write padding + data together. */
fwrite(outbuf-space, space+sz, 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
*/
}
}
void init_output(void){
int outbuf_pages;
char *outbuf;
switch(page_size){
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;
}
// add page_size-1 to round up
outbuf_pages = (OUTBUF_SIZE+SPACE_AMOUNT+page_size-1)/page_size;
outbuf = mmap(
0,
page_size * (outbuf_pages+1), // 1 more, for guard page at high addresses
PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS,
-1,
0
);
memset(outbuf, ' ', SPACE_AMOUNT);
if(SPACE_AMOUNT==page_size) mprotect(outbuf, page_size, PROT_READ);
mprotect(outbuf + page_size*outbuf_pages, page_size, PROT_NONE); // guard page
saved_outbuf = outbuf + SPACE_AMOUNT;
// available space: page_size*outbuf_pages-SPACE_AMOUNT
seconds_since_1970 = time(NULL);
meminfo();
check_header_width();
}
Reference in New Issue View Git Blame Copy Permalink