output.c

linux下获取一些环境信息的代码

 * 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 */


/* 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_nop,     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_nop,     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*/
{"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_nop,     8,   0,    DEC, ET|RIGHT}, /*time*/
{"cstime",    "-",       pr_nop,      sr_cstime,  1,   0,    LNX, AN|RIGHT},
{"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_nop,    11,   0,    U98, ET|RIGHT}, /* was 7 wide */
{"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},
{"iac",       "IAC",     pr_nop,      sr_nop,     4,   0,    BSD, AN|RIGHT}, // DragonFly
{"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_thread,   sr_tid,     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_pid,      sr_tgid,    5,   0,    U98, PO|PIDMAX|RIGHT},
{"pmem",      "%MEM",    pr_pmem,     sr_nop,     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 */
{"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*/
{"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",      "SZ",      pr_swapable, sr_swapable, 5,  0,    SCO, PO|RIGHT},
{"sl",        "SL",      pr_nop,      sr_nop,     3,   0,    XXX, AN|RIGHT},
{"spid",      "SPID",    pr_thread,   sr_tid,     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},
{"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},
{"tid",       "TID",     pr_thread,   sr_tid,     5,   0,    AIX, TO|PIDMAX|RIGHT},
{"time",      "TIME",    pr_time,     sr_nop,     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},
{"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 */
{"Def