+/*-
+ * 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);
+}
projects / unix-history / commitdiff