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- /*-
- * Copyright (c) 1990 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #ifndef lint
- char copyright[] =
- "@(#) Copyright (c) 1990 The Regents of the University of California.\n\
- All rights reserved.\n";
- #endif /* not lint */
-
- #ifndef lint
- static char sccsid[] = "@(#)ps.c 5.43 (Berkeley) 7/1/91";
- #endif /* not lint */
-
- #include <sys/param.h>
- #include <sys/user.h>
- #include <sys/time.h>
- #include <sys/resource.h>
- #include <sys/proc.h>
- #include <sys/stat.h>
- #include <sys/ioctl.h>
- #include <sys/kinfo.h>
- #include <nlist.h>
- #include <kvm.h>
- #include <errno.h>
- #include <unistd.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <paths.h>
- #include "ps.h"
-
- #ifdef SPPWAIT
- #define NEWVM
- #endif
-
- KINFO *kinfo;
- struct varent *vhead, *vtail;
-
- int eval; /* exit value */
- int rawcpu; /* -C */
- int sumrusage; /* -S */
- int termwidth; /* width of screen (0 == infinity) */
- int totwidth; /* calculated width of requested variables */
-
- static int needuser, needcomm;
-
- enum sort { DEFAULT, SORTMEM, SORTCPU } sortby = DEFAULT;
-
- uid_t getuid();
- char *ttyname();
-
- char dfmt[] = "pid tt state time command";
- char jfmt[] = "user pid ppid pgid sess jobc state tt time command";
- char lfmt[] = "uid pid ppid cpu pri nice vsz rss wchan state tt time command";
- char o1[] = "pid";
- char o2[] = "tt state time command";
- char ufmt[] = "user pid %cpu %mem vsz rss tt state start time command";
- char vfmt[] =
- "pid state time sl re pagein vsz rss lim tsiz trs %cpu %mem command";
-
- main(argc, argv)
- int argc;
- char **argv;
- {
- extern char *optarg;
- extern int optind;
- register struct proc *p;
- register size_t nentries;
- register struct varent *vent;
- register int i;
- struct winsize ws;
- dev_t ttydev;
- int all, ch, flag, fmt, lineno, pid, prtheader, uid, what, xflg;
- int pscomp();
- char *nlistf, *memf, *swapf;
- char *kludge_oldps_options();
-
- if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&ws) == -1 &&
- ioctl(STDERR_FILENO, TIOCGWINSZ, (char *)&ws) == -1 &&
- ioctl(STDIN_FILENO, TIOCGWINSZ, (char *)&ws) == -1) ||
- ws.ws_col == 0)
- termwidth = 79;
- else
- termwidth = ws.ws_col - 1;
-
- if (argc > 1)
- argv[1] = kludge_oldps_options(argv[1]);
-
- fmt = 0;
- all = xflg = 0;
- pid = uid = -1;
- ttydev = NODEV;
- memf = nlistf = swapf = NULL;
- while ((ch = getopt(argc, argv,
- "aCghjLlM:mN:O:o:p:rSTt:uvW:wx")) != EOF)
- switch((char)ch) {
- case 'a':
- all = 1;
- break;
- case 'C':
- rawcpu = 1;
- break;
- case 'g':
- break; /* no-op */
- case 'h':
- prtheader = ws.ws_row > 5 ? ws.ws_row : 22;
- break;
- case 'j':
- parsefmt(jfmt);
- fmt = 1;
- jfmt[0] = '\0';
- break;
- case 'L':
- showkey();
- exit(0);
- case 'l':
- parsefmt(lfmt);
- fmt = 1;
- lfmt[0] = '\0';
- break;
- case 'M':
- memf = optarg;
- break;
- case 'm':
- sortby = SORTMEM;
- break;
- case 'N':
- nlistf = optarg;
- break;
- case 'O':
- parsefmt(o1);
- parsefmt(optarg);
- parsefmt(o2);
- o1[0] = o2[0] = '\0';
- fmt = 1;
- break;
- case 'o':
- parsefmt(optarg);
- fmt = 1;
- break;
- case 'p':
- pid = atoi(optarg);
- xflg = 1;
- break;
- case 'r':
- sortby = SORTCPU;
- break;
- case 'S':
- sumrusage = 1;
- break;
- case 'T':
- if ((optarg = ttyname(STDIN_FILENO)) == NULL)
- err("stdin: not a terminal");
- /* FALLTHROUGH */
- case 't': {
- char *ttypath;
- struct stat stbuf;
- char pathbuf[MAXPATHLEN];
-
- if (strcmp(optarg, "co") == 0)
- ttypath = _PATH_CONSOLE;
- else if (*optarg != '/')
- (void) sprintf(ttypath = pathbuf, "%s%s",
- _PATH_TTY, optarg);
- else
- ttypath = optarg;
- if (stat(ttypath, &stbuf) == -1)
- err("%s: %s", ttypath, strerror(errno));
- if (!S_ISCHR(stbuf.st_mode))
- err("%s: not a terminal", ttypath);
- ttydev = stbuf.st_rdev;
- break;
- }
- case 'u':
- parsefmt(ufmt);
- sortby = SORTCPU;
- fmt = 1;
- ufmt[0] = '\0';
- break;
- case 'v':
- parsefmt(vfmt);
- sortby = SORTMEM;
- fmt = 1;
- vfmt[0] = '\0';
- break;
- case 'W':
- swapf = optarg;
- break;
- case 'w':
- if (termwidth < 131)
- termwidth = 131;
- else
- termwidth = UNLIMITED;
- break;
- case 'x':
- xflg = 1;
- break;
- case '?':
- default:
- usage();
- }
- argc -= optind;
- argv += optind;
-
- #define BACKWARD_COMPATIBILITY
- #ifdef BACKWARD_COMPATIBILITY
- if (*argv) {
-
- nlistf = *argv;
- if (*++argv) {
- memf = *argv;
- if (*++argv)
- swapf = *argv;
- }
- }
- #endif
- if (kvm_openfiles(nlistf, memf, swapf) == -1)
- err("kvm_openfiles: %s", kvm_geterr());
-
- if (!fmt)
- parsefmt(dfmt);
-
- if (!all && ttydev == NODEV && pid == -1) /* XXX - should be cleaner */
- uid = getuid();
-
- /*
- * scan requested variables, noting what structures are needed,
- * and adjusting header widths as appropiate.
- */
- scanvars();
- /*
- * get proc list
- */
- if (uid != -1) {
- what = KINFO_PROC_UID;
- flag = uid;
- } else if (ttydev != NODEV) {
- what = KINFO_PROC_TTY;
- flag = ttydev;
- } else if (pid != -1) {
- what = KINFO_PROC_PID;
- flag = pid;
- } else
- what = KINFO_PROC_ALL;
- /*
- * select procs
- */
- if ((nentries = kvm_getprocs(what, flag)) == -1)
- err("%s", kvm_geterr());
- kinfo = malloc(nentries * sizeof(KINFO));
- if (kinfo == NULL)
- err("%s", strerror(errno));
- for (nentries = 0; p = kvm_nextproc(); ++nentries) {
- kinfo[nentries].ki_p = p;
- kinfo[nentries].ki_e = kvm_geteproc(p);
- if (needuser)
- saveuser(&kinfo[nentries]);
- }
- /*
- * print header
- */
- printheader();
- if (nentries == 0)
- exit(0);
- /*
- * sort proc list
- */
- qsort((void *)kinfo, nentries, sizeof(KINFO), pscomp);
- /*
- * for each proc, call each variable output function.
- */
- for (i = lineno = 0; i < nentries; i++) {
- if (xflg == 0 && (kinfo[i].ki_e->e_tdev == NODEV ||
- (kinfo[i].ki_p->p_flag & SCTTY ) == 0))
- continue;
- for (vent = vhead; vent; vent = vent->next) {
- (*vent->var->oproc)(&kinfo[i], vent->var, vent->next);
- if (vent->next != NULL)
- (void) putchar(' ');
- }
- (void) putchar('\n');
- if (prtheader && lineno++ == prtheader-4) {
- (void) putchar('\n');
- printheader();
- lineno = 0;
- }
- }
- exit(eval);
- }
-
- scanvars()
- {
- register struct varent *vent;
- register VAR *v;
- register int i;
-
- for (vent = vhead; vent; vent = vent->next) {
- v = vent->var;
- i = strlen(v->header);
- if (v->width < i)
- v->width = i;
- totwidth += v->width + 1; /* +1 for space */
- if (v->flag & USER)
- needuser = 1;
- if (v->flag & COMM)
- needcomm = 1;
- }
- totwidth--;
- }
-
-
- /* XXX - redo */
- saveuser(ki)
- KINFO *ki;
- {
- register struct usave *usp;
- register struct user *up;
-
- if ((usp = calloc(1, sizeof(struct usave))) == NULL)
- err("%s", strerror(errno));
- up = kvm_getu(ki->ki_p);
- /*
- * save arguments if needed
- */
- ki->ki_args = needcomm ? strdup(kvm_getargs(ki->ki_p, up)) : NULL;
- if (up != NULL) {
- ki->ki_u = usp;
- /*
- * save important fields
- */
- #ifdef NEWVM
- usp->u_start = up->u_stats.p_start;
- usp->u_ru = up->u_stats.p_ru;
- usp->u_cru = up->u_stats.p_cru;
- #else
- usp->u_procp = up->u_procp;
- usp->u_start = up->u_start;
- usp->u_ru = up->u_ru;
- usp->u_cru = up->u_cru;
- usp->u_acflag = up->u_acflag;
- #endif
- } else
- free(usp);
- }
-
- pscomp(k1, k2)
- KINFO *k1, *k2;
- {
- int i;
- #ifdef NEWVM
- #define VSIZE(k) ((k)->ki_e->e_vm.vm_dsize + (k)->ki_e->e_vm.vm_ssize + \
- (k)->ki_e->e_vm.vm_tsize)
- #else
- #define VSIZE(k) ((k)->ki_p->p_dsize + (k)->ki_p->p_ssize + (k)->ki_e->e_xsize)
- #endif
-
- if (sortby == SORTCPU)
- return (getpcpu(k2) - getpcpu(k1));
- if (sortby == SORTMEM)
- return (VSIZE(k2) - VSIZE(k1));
- i = k1->ki_e->e_tdev - k2->ki_e->e_tdev;
- if (i == 0)
- i = k1->ki_p->p_pid - k2->ki_p->p_pid;
- return (i);
- }
-
- /*
- * ICK (all for getopt), would rather hide the ugliness
- * here than taint the main code.
- *
- * ps foo -> ps -foo
- * ps 34 -> ps -p34
- *
- * The old convention that 't' with no trailing tty arg means the users
- * tty, is only supported if argv[1] doesn't begin with a '-'. This same
- * feature is available with the option 'T', which takes no argument.
- */
- char *
- kludge_oldps_options(s)
- char *s;
- {
- size_t len;
- char *newopts, *ns, *cp;
-
- len = strlen(s);
- if ((newopts = ns = malloc(len + 2)) == NULL)
- err("%s", strerror(errno));
- /*
- * options begin with '-'
- */
- if (*s != '-')
- *ns++ = '-'; /* add option flag */
- /*
- * gaze to end of argv[1]
- */
- cp = s + len - 1;
- /*
- * if last letter is a 't' flag with no argument (in the context
- * of the oldps options -- option string NOT starting with a '-' --
- * then convert to 'T' (meaning *this* terminal, i.e. ttyname(0)).
- */
- if (*cp == 't' && *s != '-')
- *cp = 'T';
- else {
- /*
- * otherwise check for trailing number, which *may* be a
- * pid.
- */
- while (cp >= s && isdigit(*cp))
- --cp;
- }
- cp++;
- bcopy(s, ns, (size_t)(cp - s)); /* copy up to trailing number */
- ns += cp - s;
- /*
- * if there's a trailing number, and not a preceding 'p' (pid) or
- * 't' (tty) flag, then assume it's a pid and insert a 'p' flag.
- */
- if (isdigit(*cp) && (cp == s || cp[-1] != 't' && cp[-1] != 'p' &&
- (cp - 1 == s || cp[-2] != 't')))
- *ns++ = 'p';
- (void) strcpy(ns, cp); /* and append the number */
-
- return (newopts);
- }
-
- #if __STDC__
- #include <stdarg.h>
- #else
- #include <varargs.h>
- #endif
-
- void
- #if __STDC__
- err(const char *fmt, ...)
- #else
- err(fmt, va_alist)
- char *fmt;
- va_dcl
- #endif
- {
- va_list ap;
- #if __STDC__
- va_start(ap, fmt);
- #else
- va_start(ap);
- #endif
- (void)fprintf(stderr, "ps: ");
- (void)vfprintf(stderr, fmt, ap);
- va_end(ap);
- (void)fprintf(stderr, "\n");
- exit(1);
- /* NOTREACHED */
- }
-
- usage()
- {
- (void) fprintf(stderr,
- "usage: ps [-aChjlmrSTuvwx] [-O|o fmt] [-p pid] [-t tty]\n\t [-M core] [-N system] [-W swap]\n ps [-L]\n");
- exit(1);
- }
-