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ps.c
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ps.c
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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2013 Gary Mills
*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Copyright (c) 2012, Joyent, Inc. All rights reserved.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* ps -- print things about processes.
*/
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <pwd.h>
#include <grp.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mkdev.h>
#include <unistd.h>
#include <stdlib.h>
#include <limits.h>
#include <dirent.h>
#include <sys/signal.h>
#include <sys/fault.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <procfs.h>
#include <locale.h>
#include <wctype.h>
#include <wchar.h>
#include <libw.h>
#include <stdarg.h>
#include <sys/proc.h>
#include <sys/pset.h>
#include <project.h>
#include <zone.h>
#define min(a, b) ((a) > (b) ? (b) : (a))
#define max(a, b) ((a) < (b) ? (b) : (a))
#define NTTYS 20 /* initial size of table for -t option */
#define SIZ 30 /* initial size of tables for -p, -s, -g, -h and -z */
/*
* Size of buffer holding args for t, p, s, g, u, U, G, z options.
* Set to ZONENAME_MAX, the minimum value needed to allow any
* zone to be specified.
*/
#define ARGSIZ ZONENAME_MAX
/* Max chars in a user/group name or printed u/g id */
#define MAXUGNAME (LOGNAME_MAX+2)
/* Structure for storing user or group info */
struct ugdata {
id_t id; /* numeric user-id or group-id */
char name[MAXUGNAME+1]; /* user/group name, null terminated */
};
struct ughead {
size_t size; /* number of ugdata structs allocated */
size_t nent; /* number of active entries */
struct ugdata *ent; /* pointer to array of actual entries */
};
enum fname { /* enumeration of field names */
F_USER, /* effective user of the process */
F_RUSER, /* real user of the process */
F_GROUP, /* effective group of the process */
F_RGROUP, /* real group of the process */
F_UID, /* numeric effective uid of the process */
F_RUID, /* numeric real uid of the process */
F_GID, /* numeric effective gid of the process */
F_RGID, /* numeric real gid of the process */
F_PID, /* process id */
F_PPID, /* parent process id */
F_PGID, /* process group id */
F_SID, /* session id */
F_PSR, /* bound processor */
F_LWP, /* lwp-id */
F_NLWP, /* number of lwps */
F_OPRI, /* old priority (obsolete) */
F_PRI, /* new priority */
F_F, /* process flags */
F_S, /* letter indicating the state */
F_C, /* processor utilization (obsolete) */
F_PCPU, /* percent of recently used cpu time */
F_PMEM, /* percent of physical memory used (rss) */
F_OSZ, /* virtual size of the process in pages */
F_VSZ, /* virtual size of the process in kilobytes */
F_RSS, /* resident set size of the process in kilobytes */
F_NICE, /* "nice" value of the process */
F_CLASS, /* scheduler class */
F_STIME, /* start time of the process, hh:mm:ss or Month Day */
F_ETIME, /* elapsed time of the process, [[dd-]hh:]mm:ss */
F_TIME, /* cpu time of the process, [[dd-]hh:]mm:ss */
F_TTY, /* name of the controlling terminal */
F_ADDR, /* address of the process (obsolete) */
F_WCHAN, /* wait channel (sleep condition variable) */
F_FNAME, /* file name of command */
F_COMM, /* name of command (argv[0] value) */
F_ARGS, /* name of command plus all its arguments */
F_TASKID, /* task id */
F_PROJID, /* project id */
F_PROJECT, /* project name of the process */
F_PSET, /* bound processor set */
F_ZONE, /* zone name */
F_ZONEID, /* zone id */
F_CTID, /* process contract id */
F_LGRP, /* process home lgroup */
F_DMODEL /* process data model */
};
struct field {
struct field *next; /* linked list */
int fname; /* field index */
const char *header; /* header to use */
int width; /* width of field */
};
static struct field *fields = NULL; /* fields selected via -o */
static struct field *last_field = NULL;
static int do_header = 0;
static struct timeval now;
/* array of defined fields, in fname order */
struct def_field {
const char *fname;
const char *header;
int width;
int minwidth;
};
static struct def_field fname[] = {
/* fname header width minwidth */
{ "user", "USER", 8, 8 },
{ "ruser", "RUSER", 8, 8 },
{ "group", "GROUP", 8, 8 },
{ "rgroup", "RGROUP", 8, 8 },
{ "uid", "UID", 5, 5 },
{ "ruid", "RUID", 5, 5 },
{ "gid", "GID", 5, 5 },
{ "rgid", "RGID", 5, 5 },
{ "pid", "PID", 5, 5 },
{ "ppid", "PPID", 5, 5 },
{ "pgid", "PGID", 5, 5 },
{ "sid", "SID", 5, 5 },
{ "psr", "PSR", 3, 2 },
{ "lwp", "LWP", 6, 2 },
{ "nlwp", "NLWP", 4, 2 },
{ "opri", "PRI", 3, 2 },
{ "pri", "PRI", 3, 2 },
{ "f", "F", 2, 2 },
{ "s", "S", 1, 1 },
{ "c", "C", 2, 2 },
{ "pcpu", "%CPU", 4, 4 },
{ "pmem", "%MEM", 4, 4 },
{ "osz", "SZ", 4, 4 },
{ "vsz", "VSZ", 4, 4 },
{ "rss", "RSS", 4, 4 },
{ "nice", "NI", 2, 2 },
{ "class", "CLS", 4, 2 },
{ "stime", "STIME", 8, 8 },
{ "etime", "ELAPSED", 11, 7 },
{ "time", "TIME", 11, 5 },
{ "tty", "TT", 7, 7 },
#ifdef _LP64
{ "addr", "ADDR", 16, 8 },
{ "wchan", "WCHAN", 16, 8 },
#else
{ "addr", "ADDR", 8, 8 },
{ "wchan", "WCHAN", 8, 8 },
#endif
{ "fname", "COMMAND", 8, 8 },
{ "comm", "COMMAND", 80, 8 },
{ "args", "COMMAND", 80, 80 },
{ "taskid", "TASKID", 5, 5 },
{ "projid", "PROJID", 5, 5 },
{ "project", "PROJECT", 8, 8 },
{ "pset", "PSET", 3, 3 },
{ "zone", "ZONE", 8, 8 },
{ "zoneid", "ZONEID", 5, 5 },
{ "ctid", "CTID", 5, 5 },
{ "lgrp", "LGRP", 4, 2 },
{ "dmodel", "DMODEL", 6, 6 },
};
#define NFIELDS (sizeof (fname) / sizeof (fname[0]))
static int retcode = 1;
static int lflg;
static int Aflg;
static int uflg;
static int Uflg;
static int Gflg;
static int aflg;
static int dflg;
static int Lflg;
static int Pflg;
static int Wflg;
static int yflg;
static int pflg;
static int fflg;
static int cflg;
static int jflg;
static int gflg;
static int sflg;
static int tflg;
static int zflg;
static int Zflg;
static int hflg;
static int Hflg;
static uid_t tuid = (uid_t)-1;
static int errflg;
static int ndev; /* number of devices */
static int maxdev; /* number of devl structures allocated */
#define DNINCR 100
#define DNSIZE 14
static struct devl { /* device list */
char dname[DNSIZE]; /* device name */
dev_t ddev; /* device number */
} *devl;
static struct tty {
char *tname;
dev_t tdev;
} *tty = NULL; /* for t option */
static size_t ttysz = 0;
static int ntty = 0;
static pid_t *pid = NULL; /* for p option */
static size_t pidsz = 0;
static size_t npid = 0;
static int *lgrps = NULL; /* list of lgroup IDs for for h option */
static size_t lgrps_size = 0; /* size of the lgrps list */
static size_t nlgrps = 0; /* number elements in the list */
/* Maximum possible lgroup ID value */
#define MAX_LGRP_ID 256
static pid_t *grpid = NULL; /* for g option */
static size_t grpidsz = 0;
static int ngrpid = 0;
static pid_t *sessid = NULL; /* for s option */
static size_t sessidsz = 0;
static int nsessid = 0;
static zoneid_t *zoneid = NULL; /* for z option */
static size_t zoneidsz = 0;
static int nzoneid = 0;
static int kbytes_per_page;
static int pidwidth;
static char *procdir = "/proc"; /* standard /proc directory */
static struct ughead euid_tbl; /* table to store selected euid's */
static struct ughead ruid_tbl; /* table to store selected real uid's */
static struct ughead egid_tbl; /* table to store selected egid's */
static struct ughead rgid_tbl; /* table to store selected real gid's */
static prheader_t *lpsinfobuf; /* buffer to contain lpsinfo */
static size_t lpbufsize;
/*
* This constant defines the sentinal number of process IDs below which we
* only examine individual entries in /proc rather than scanning through
* /proc. This optimization is a huge win in the common case.
*/
#define PTHRESHOLD 40
#define UCB_OPTS "-aceglnrtuvwxSU"
static void usage(void);
static char *getarg(char **);
static char *parse_format(char *);
static char *gettty(psinfo_t *);
static int prfind(int, psinfo_t *, char **);
static void prcom(psinfo_t *, char *);
static void prtpct(ushort_t, int);
static void print_time(time_t, int);
static void print_field(psinfo_t *, struct field *, const char *);
static void print_zombie_field(psinfo_t *, struct field *, const char *);
static void pr_fields(psinfo_t *, const char *,
void (*print_fld)(psinfo_t *, struct field *, const char *));
static int search(pid_t *, int, pid_t);
static void add_ugentry(struct ughead *, char *);
static int uconv(struct ughead *);
static int gconv(struct ughead *);
static int ugfind(id_t, struct ughead *);
static void prtime(timestruc_t, int, int);
static void przom(psinfo_t *);
static int namencnt(char *, int, int);
static char *err_string(int);
static int print_proc(char *pname);
static time_t delta_secs(const timestruc_t *);
static int str2id(const char *, pid_t *, long, long);
static int str2uid(const char *, uid_t *, unsigned long, unsigned long);
static void *Realloc(void *, size_t);
static int pidcmp(const void *p1, const void *p2);
extern int ucbmain(int, char **);
static int stdmain(int, char **);
int
main(int argc, char **argv)
{
const char *me;
/*
* The original two ps'es are linked in a single binary;
* their main()s are renamed to stdmain for /usr/bin/ps and
* ucbmain for /usr/ucb/ps.
* We try to figure out which instance of ps the user wants to run.
* Traditionally, the UCB variant doesn't require the flag argument
* start with a "-". If the first argument doesn't start with a
* "-", we call "ucbmain".
* If there's a first argument and it starts with a "-", we check
* whether any of the options isn't acceptable to "ucbmain"; in that
* case we run "stdmain".
* If we can't tell from the options which main to call, we check
* the binary we are running. We default to "stdmain" but
* any mention in the executable name of "ucb" causes us to call
* ucbmain.
*/
if (argv[1] != NULL) {
if (argv[1][0] != '-')
return (ucbmain(argc, argv));
else if (argv[1][strspn(argv[1], UCB_OPTS)] != '\0')
return (stdmain(argc, argv));
}
me = getexecname();
if (me != NULL && strstr(me, "ucb") != NULL)
return (ucbmain(argc, argv));
else
return (stdmain(argc, argv));
}
static int
stdmain(int argc, char **argv)
{
char *p;
char *p1;
char *parg;
int c;
int i;
int pgerrflg = 0; /* err flg: non-numeric arg w/p & g options */
size_t size, len;
DIR *dirp;
struct dirent *dentp;
pid_t maxpid;
pid_t id;
int ret;
char loc_stime_str[32];
(void) setlocale(LC_ALL, "");
#if !defined(TEXT_DOMAIN) /* Should be defined by cc -D */
#define TEXT_DOMAIN "SYS_TEST" /* Use this only if it weren't */
#endif
(void) textdomain(TEXT_DOMAIN);
(void) memset(&euid_tbl, 0, sizeof (euid_tbl));
(void) memset(&ruid_tbl, 0, sizeof (ruid_tbl));
(void) memset(&egid_tbl, 0, sizeof (egid_tbl));
(void) memset(&rgid_tbl, 0, sizeof (rgid_tbl));
kbytes_per_page = sysconf(_SC_PAGESIZE) / 1024;
(void) gettimeofday(&now, NULL);
/*
* calculate width of pid fields based on configured MAXPID
* (must be at least 5 to retain output format compatibility)
*/
id = maxpid = (pid_t)sysconf(_SC_MAXPID);
pidwidth = 1;
while ((id /= 10) > 0)
++pidwidth;
pidwidth = pidwidth < 5 ? 5 : pidwidth;
fname[F_PID].width = fname[F_PPID].width = pidwidth;
fname[F_PGID].width = fname[F_SID].width = pidwidth;
/*
* TRANSLATION_NOTE
* Specify the printf format with width and precision for
* the STIME field.
*/
len = snprintf(loc_stime_str, sizeof (loc_stime_str),
dcgettext(NULL, "%8.8s", LC_TIME), "STIME");
if (len >= sizeof (loc_stime_str))
len = sizeof (loc_stime_str) - 1;
fname[F_STIME].width = fname[F_STIME].minwidth = len;
while ((c = getopt(argc, argv, "jlfceAadLPWyZHh:t:p:g:u:U:G:n:s:o:z:"))
!= EOF)
switch (c) {
case 'H': /* Show home lgroups */
Hflg++;
break;
case 'h':
/*
* Show processes/threads with given home lgroups
*/
hflg++;
p1 = optarg;
do {
int id;
/*
* Get all IDs in the list, verify for
* correctness and place in lgrps array.
*/
parg = getarg(&p1);
/* Convert string to integer */
ret = str2id(parg, (pid_t *)&id, 0,
MAX_LGRP_ID);
/* Complain if ID didn't parse correctly */
if (ret != 0) {
pgerrflg++;
(void) fprintf(stderr,
gettext("ps: %s "), parg);
if (ret == EINVAL)
(void) fprintf(stderr,
gettext("is an invalid "
"non-numeric argument"));
else
(void) fprintf(stderr,
gettext("exceeds valid "
"range"));
(void) fprintf(stderr,
gettext(" for -h option\n"));
continue;
}
/* Extend lgrps array if needed */
if (nlgrps == lgrps_size) {
/* Double the size of the lgrps array */
if (lgrps_size == 0)
lgrps_size = SIZ;
lgrps_size *= 2;
lgrps = Realloc(lgrps,
lgrps_size * sizeof (int));
}
/* place the id in the lgrps table */
lgrps[nlgrps++] = id;
} while (*p1);
break;
case 'l': /* long listing */
lflg++;
break;
case 'f': /* full listing */
fflg++;
break;
case 'j':
jflg++;
break;
case 'c':
/*
* Format output to reflect scheduler changes:
* high numbers for high priorities and don't
* print nice or p_cpu values. 'c' option only
* effective when used with 'l' or 'f' options.
*/
cflg++;
break;
case 'A': /* list every process */
case 'e': /* (obsolete) list every process */
Aflg++;
tflg = Gflg = Uflg = uflg = pflg = gflg = sflg = 0;
zflg = hflg = 0;
break;
case 'a':
/*
* Same as 'e' except no session group leaders
* and no non-terminal processes.
*/
aflg++;
break;
case 'd': /* same as e except no session leaders */
dflg++;
break;
case 'L': /* show lwps */
Lflg++;
break;
case 'P': /* show bound processor */
Pflg++;
break;
case 'W': /* truncate long names */
Wflg++;
break;
case 'y': /* omit F & ADDR, report RSS & SZ in Kby */
yflg++;
break;
case 'n': /* no longer needed; retain as no-op */
(void) fprintf(stderr,
gettext("ps: warning: -n option ignored\n"));
break;
case 't': /* terminals */
#define TSZ 30
tflg++;
p1 = optarg;
do {
char nambuf[TSZ+6]; /* for "/dev/" + '\0' */
struct stat64 s;
parg = getarg(&p1);
p = Realloc(NULL, TSZ+1); /* for '\0' */
/* zero the buffer before using it */
p[0] = '\0';
size = TSZ;
if (isdigit(*parg)) {
(void) strcpy(p, "tty");
size -= 3;
}
(void) strncat(p, parg, size);
if (ntty == ttysz) {
if ((ttysz *= 2) == 0)
ttysz = NTTYS;
tty = Realloc(tty,
(ttysz + 1) * sizeof (struct tty));
}
tty[ntty].tdev = PRNODEV;
(void) strcpy(nambuf, "/dev/");
(void) strcat(nambuf, p);
if (stat64(nambuf, &s) == 0)
tty[ntty].tdev = s.st_rdev;
tty[ntty++].tname = p;
} while (*p1);
break;
case 'p': /* proc ids */
pflg++;
p1 = optarg;
do {
pid_t id;
parg = getarg(&p1);
if ((ret = str2id(parg, &id, 0, maxpid)) != 0) {
pgerrflg++;
(void) fprintf(stderr,
gettext("ps: %s "), parg);
if (ret == EINVAL)
(void) fprintf(stderr,
gettext("is an invalid "
"non-numeric argument"));
else
(void) fprintf(stderr,
gettext("exceeds valid "
"range"));
(void) fprintf(stderr,
gettext(" for -p option\n"));
continue;
}
if (npid == pidsz) {
if ((pidsz *= 2) == 0)
pidsz = SIZ;
pid = Realloc(pid,
pidsz * sizeof (pid_t));
}
pid[npid++] = id;
} while (*p1);
break;
case 's': /* session */
sflg++;
p1 = optarg;
do {
pid_t id;
parg = getarg(&p1);
if ((ret = str2id(parg, &id, 0, maxpid)) != 0) {
pgerrflg++;
(void) fprintf(stderr,
gettext("ps: %s "), parg);
if (ret == EINVAL)
(void) fprintf(stderr,
gettext("is an invalid "
"non-numeric argument"));
else
(void) fprintf(stderr,
gettext("exceeds valid "
"range"));
(void) fprintf(stderr,
gettext(" for -s option\n"));
continue;
}
if (nsessid == sessidsz) {
if ((sessidsz *= 2) == 0)
sessidsz = SIZ;
sessid = Realloc(sessid,
sessidsz * sizeof (pid_t));
}
sessid[nsessid++] = id;
} while (*p1);
break;
case 'g': /* proc group */
gflg++;
p1 = optarg;
do {
pid_t id;
parg = getarg(&p1);
if ((ret = str2id(parg, &id, 0, maxpid)) != 0) {
pgerrflg++;
(void) fprintf(stderr,
gettext("ps: %s "), parg);
if (ret == EINVAL)
(void) fprintf(stderr,
gettext("is an invalid "
"non-numeric argument"));
else
(void) fprintf(stderr,
gettext("exceeds valid "
"range"));
(void) fprintf(stderr,
gettext(" for -g option\n"));
continue;
}
if (ngrpid == grpidsz) {
if ((grpidsz *= 2) == 0)
grpidsz = SIZ;
grpid = Realloc(grpid,
grpidsz * sizeof (pid_t));
}
grpid[ngrpid++] = id;
} while (*p1);
break;
case 'u': /* effective user name or number */
uflg++;
p1 = optarg;
do {
parg = getarg(&p1);
add_ugentry(&euid_tbl, parg);
} while (*p1);
break;
case 'U': /* real user name or number */
Uflg++;
p1 = optarg;
do {
parg = getarg(&p1);
add_ugentry(&ruid_tbl, parg);
} while (*p1);
break;
case 'G': /* real group name or number */
Gflg++;
p1 = optarg;
do {
parg = getarg(&p1);
add_ugentry(&rgid_tbl, parg);
} while (*p1);
break;
case 'o': /* output format */
p = optarg;
while ((p = parse_format(p)) != NULL)
;
break;
case 'z': /* zone name or number */
zflg++;
p1 = optarg;
do {
zoneid_t id;
parg = getarg(&p1);
if (zone_get_id(parg, &id) != 0) {
pgerrflg++;
(void) fprintf(stderr,
gettext("ps: unknown zone %s\n"),
parg);
continue;
}
if (nzoneid == zoneidsz) {
if ((zoneidsz *= 2) == 0)
zoneidsz = SIZ;
zoneid = Realloc(zoneid,
zoneidsz * sizeof (zoneid_t));
}
zoneid[nzoneid++] = id;
} while (*p1);
break;
case 'Z': /* show zone name */
Zflg++;
break;
default: /* error on ? */
errflg++;
break;
}
if (errflg || optind < argc || pgerrflg)
usage();
if (tflg)
tty[ntty].tname = NULL;
/*
* If an appropriate option has not been specified, use the
* current terminal and effective uid as the default.
*/
if (!(aflg|Aflg|dflg|Gflg|hflg|Uflg|uflg|tflg|pflg|gflg|sflg|zflg)) {
psinfo_t info;
int procfd;
char *name;
char pname[100];
/* get our own controlling tty name using /proc */
(void) snprintf(pname, sizeof (pname),
"%s/self/psinfo", procdir);
if ((procfd = open(pname, O_RDONLY)) < 0 ||
read(procfd, (char *)&info, sizeof (info)) < 0 ||
info.pr_ttydev == PRNODEV) {
(void) fprintf(stderr,
gettext("ps: no controlling terminal\n"));
exit(1);
}
(void) close(procfd);
i = 0;
name = gettty(&info);
if (*name == '?') {
(void) fprintf(stderr,
gettext("ps: can't find controlling terminal\n"));
exit(1);
}
if (ntty == ttysz) {
if ((ttysz *= 2) == 0)
ttysz = NTTYS;
tty = Realloc(tty, (ttysz + 1) * sizeof (struct tty));
}
tty[ntty].tdev = info.pr_ttydev;
tty[ntty++].tname = name;
tty[ntty].tname = NULL;
tflg++;
tuid = getuid();
}
if (Aflg) {
Gflg = Uflg = uflg = pflg = sflg = gflg = aflg = dflg = 0;
zflg = hflg = 0;
}
if (Aflg | aflg | dflg)
tflg = 0;
i = 0; /* prepare to exit on name lookup errors */
i += uconv(&euid_tbl);
i += uconv(&ruid_tbl);
i += gconv(&egid_tbl);
i += gconv(&rgid_tbl);
if (i)
exit(1);
/* allocate a buffer for lwpsinfo structures */
lpbufsize = 4096;
if (Lflg && (lpsinfobuf = malloc(lpbufsize)) == NULL) {
(void) fprintf(stderr,
gettext("ps: no memory\n"));
exit(1);
}
if (fields) { /* print user-specified header */
if (do_header) {
struct field *f;
for (f = fields; f != NULL; f = f->next) {
if (f != fields)
(void) printf(" ");
switch (f->fname) {
case F_TTY:
(void) printf("%-*s",
f->width, f->header);
break;
case F_FNAME:
case F_COMM:
case F_ARGS:
/*
* Print these headers full width
* unless they appear at the end.
*/
if (f->next != NULL) {
(void) printf("%-*s",
f->width, f->header);
} else {
(void) printf("%s",
f->header);
}
break;
default:
(void) printf("%*s",
f->width, f->header);
break;
}
}
(void) printf("\n");
}
} else { /* print standard header */
/*
* All fields before 'PID' are printed with a trailing space
* as a separator and that is how we print the headers too.
*/
if (lflg) {
if (yflg)
(void) printf("S ");
else
(void) printf(" F S ");
}
if (Zflg)
(void) printf(" ZONE ");
if (fflg) {
(void) printf(" UID ");
} else if (lflg)
(void) printf(" UID ");
(void) printf("%*s", pidwidth, "PID");
if (lflg || fflg)
(void) printf(" %*s", pidwidth, "PPID");
if (jflg)
(void) printf(" %*s %*s", pidwidth, "PGID",
pidwidth, "SID");
if (Lflg)
(void) printf(" LWP");
if (Pflg)
(void) printf(" PSR");
if (Lflg && fflg)
(void) printf(" NLWP");
if (cflg)
(void) printf(" CLS PRI");
else if (lflg || fflg) {
(void) printf(" C");
if (lflg)
(void) printf(" PRI NI");
}
if (lflg) {
if (yflg)
(void) printf(" RSS SZ WCHAN");
else
(void) printf(" ADDR SZ WCHAN");
}
if (fflg)
(void) printf(" %s", loc_stime_str);
if (Hflg)
(void) printf(" LGRP");
if (Lflg)
(void) printf(" TTY LTIME CMD\n");
else
(void) printf(" TTY TIME CMD\n");
}
if (pflg && !(aflg|Aflg|dflg|Gflg|Uflg|uflg|hflg|tflg|gflg|sflg|zflg) &&
npid <= PTHRESHOLD) {
/*
* If we are looking at specific processes go straight
* to their /proc entries and don't scan /proc.
*/
int i;
(void) qsort(pid, npid, sizeof (pid_t), pidcmp);
for (i = 0; i < npid; i++) {
char pname[12];
if (i >= 1 && pid[i] == pid[i - 1])
continue;
(void) sprintf(pname, "%d", (int)pid[i]);
if (print_proc(pname) == 0)
retcode = 0;
}
} else {
/*
* Determine which processes to print info about by searching
* the /proc directory and looking at each process.
*/
if ((dirp = opendir(procdir)) == NULL) {
(void) fprintf(stderr,
gettext("ps: cannot open PROC directory %s\n"),
procdir);
exit(1);
}
/* for each active process --- */
while ((dentp = readdir(dirp)) != NULL) {
if (dentp->d_name[0] == '.') /* skip . and .. */
continue;
if (print_proc(dentp->d_name) == 0)
retcode = 0;
}
(void) closedir(dirp);
}
return (retcode);
}
int
print_proc(char *pid_name)
{
char pname[PATH_MAX];
int pdlen;
int found;
int procfd; /* filedescriptor for /proc/nnnnn/psinfo */
char *tp; /* ptr to ttyname, if any */
psinfo_t info; /* process information from /proc */
lwpsinfo_t *lwpsinfo; /* array of lwpsinfo structs */
pdlen = snprintf(pname, sizeof (pname), "%s/%s/", procdir, pid_name);
if (pdlen >= sizeof (pname) - 10)
return (1);
retry:
(void) strcpy(&pname[pdlen], "psinfo");
if ((procfd = open(pname, O_RDONLY)) == -1) {
/* Process may have exited meanwhile. */
return (1);
}
/*
* Get the info structure for the process and close quickly.
*/
if (read(procfd, (char *)&info, sizeof (info)) < 0) {
int saverr = errno;
(void) close(procfd);
if (saverr == EAGAIN)
goto retry;
if (saverr != ENOENT)
(void) fprintf(stderr,
gettext("ps: read() on %s: %s\n"),
pname, err_string(saverr));
return (1);
}
(void) close(procfd);
found = 0;
if (info.pr_lwp.pr_state == 0) /* can't happen? */
return (1);
/*
* Omit session group leaders for 'a' and 'd' options.
*/
if ((info.pr_pid == info.pr_sid) && (dflg || aflg))
return (1);
if (Aflg || dflg)
found++;
else if (pflg && search(pid, npid, info.pr_pid))
found++; /* ppid in p option arg list */
else if (uflg && ugfind((id_t)info.pr_euid, &euid_tbl))
found++; /* puid in u option arg list */
else if (Uflg && ugfind((id_t)info.pr_uid, &ruid_tbl))
found++; /* puid in U option arg list */
#ifdef NOT_YET
else if (gflg && ugfind((id_t)info.pr_egid, &egid_tbl))
found++; /* pgid in g option arg list */
#endif /* NOT_YET */
else if (Gflg && ugfind((id_t)info.pr_gid, &rgid_tbl))
found++; /* pgid in G option arg list */
else if (gflg && search(grpid, ngrpid, info.pr_pgid))
found++; /* grpid in g option arg list */
else if (sflg && search(sessid, nsessid, info.pr_sid))
found++; /* sessid in s option arg list */
else if (zflg && search(zoneid, nzoneid, info.pr_zoneid))
found++; /* zoneid in z option arg list */
else if (hflg && search((pid_t *)lgrps, nlgrps, info.pr_lwp.pr_lgrp))
found++; /* home lgroup in h option arg list */
if (!found && !tflg && !aflg)
return (1);
if (!prfind(found, &info, &tp))
return (1);
if (Lflg && (info.pr_nlwp + info.pr_nzomb) > 1) {
ssize_t prsz;