aboutsummaryrefslogtreecommitdiff
path: root/bin/ps/ps.c
diff options
context:
space:
mode:
Diffstat (limited to 'bin/ps/ps.c')
-rw-r--r--bin/ps/ps.c504
1 files changed, 504 insertions, 0 deletions
diff --git a/bin/ps/ps.c b/bin/ps/ps.c
new file mode 100644
index 000000000000..06d1d5f22a0b
--- /dev/null
+++ b/bin/ps/ps.c
@@ -0,0 +1,504 @@
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * 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
+static char copyright[] =
+"@(#) Copyright (c) 1990, 1993, 1994\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)ps.c 8.4 (Berkeley) 4/2/94";
+#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/sysctl.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <kvm.h>
+#include <nlist.h>
+#include <paths.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "ps.h"
+
+#ifdef P_PPWAIT
+#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, needenv;
+
+enum sort { DEFAULT, SORTMEM, SORTCPU } sortby = DEFAULT;
+
+static char *fmt __P((char **(*)(kvm_t *, const struct kinfo_proc *, int),
+ KINFO *, char *, int));
+static char *kludge_oldps_options __P((char *));
+static int pscomp __P((const void *, const void *));
+static void saveuser __P((KINFO *));
+static void scanvars __P((void));
+static void usage __P((void));
+
+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 %cpu %mem command";
+
+kvm_t *kd;
+
+int
+main(argc, argv)
+ int argc;
+ char *argv[];
+{
+ struct kinfo_proc *kp;
+ struct varent *vent;
+ struct winsize ws;
+ dev_t ttydev;
+ pid_t pid;
+ uid_t uid;
+ int all, ch, flag, i, fmt, lineno, nentries;
+ int prtheader, wflag, what, xflg;
+ char *nlistf, *memf, *swapf, errbuf[256];
+
+ 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]);
+
+ all = fmt = prtheader = wflag = xflg = 0;
+ pid = -1;
+ uid = (uid_t) -1;
+ ttydev = NODEV;
+ memf = nlistf = swapf = NULL;
+ while ((ch = getopt(argc, argv,
+ "aCeghjLlM:mN:O:o:p:rSTt:uvW:wx")) != EOF)
+ switch((char)ch) {
+ case 'a':
+ all = 1;
+ break;
+ case 'e': /* XXX set ufmt */
+ needenv = 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 = atol(optarg);
+ xflg = 1;
+ break;
+ case 'r':
+ sortby = SORTCPU;
+ break;
+ case 'S':
+ sumrusage = 1;
+ break;
+ case 'T':
+ if ((optarg = ttyname(STDIN_FILENO)) == NULL)
+ errx(1, "stdin: not a terminal");
+ /* FALLTHROUGH */
+ case 't': {
+ struct stat sb;
+ char *ttypath, pathbuf[MAXPATHLEN];
+
+ if (strcmp(optarg, "co") == 0)
+ ttypath = _PATH_CONSOLE;
+ else if (*optarg != '/')
+ (void)snprintf(ttypath = pathbuf,
+ sizeof(pathbuf), "%s%s", _PATH_TTY, optarg);
+ else
+ ttypath = optarg;
+ if (stat(ttypath, &sb) == -1)
+ err(1, "%s", ttypath);
+ if (!S_ISCHR(sb.st_mode))
+ errx(1, "%s: not a terminal", ttypath);
+ ttydev = sb.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 (wflag)
+ termwidth = UNLIMITED;
+ else if (termwidth < 131)
+ termwidth = 131;
+ wflag++;
+ 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
+ /*
+ * Discard setgid privileges if not the running kernel so that bad
+ * guys can't print interesting stuff from kernel memory.
+ */
+ if (nlistf != NULL || memf != NULL || swapf != NULL)
+ setgid(getgid());
+
+ kd = kvm_openfiles(nlistf, memf, swapf, O_RDONLY, errbuf);
+ if (kd == 0)
+ errx(1, "%s", errbuf);
+
+ 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 != (uid_t) -1) {
+ what = KERN_PROC_UID;
+ flag = uid;
+ } else if (ttydev != NODEV) {
+ what = KERN_PROC_TTY;
+ flag = ttydev;
+ } else if (pid != -1) {
+ what = KERN_PROC_PID;
+ flag = pid;
+ } else {
+ what = KERN_PROC_ALL;
+ flag = 0;
+ }
+ /*
+ * select procs
+ */
+ if ((kp = kvm_getprocs(kd, what, flag, &nentries)) == 0)
+ errx(1, "%s", kvm_geterr(kd));
+ if ((kinfo = malloc(nentries * sizeof(*kinfo))) == NULL)
+ err(1, NULL);
+ for (i = nentries; --i >= 0; ++kp) {
+ kinfo[i].ki_p = kp;
+ if (needuser)
+ saveuser(&kinfo[i]);
+ }
+ /*
+ * print header
+ */
+ printheader();
+ if (nentries == 0)
+ exit(0);
+ /*
+ * sort proc list
+ */
+ qsort(kinfo, nentries, sizeof(KINFO), pscomp);
+ /*
+ * for each proc, call each variable output function.
+ */
+ for (i = lineno = 0; i < nentries; i++) {
+ if (xflg == 0 && (KI_EPROC(&kinfo[i])->e_tdev == NODEV ||
+ (KI_PROC(&kinfo[i])->p_flag & P_CONTROLT ) == 0))
+ continue;
+ for (vent = vhead; vent; vent = vent->next) {
+ (vent->var->oproc)(&kinfo[i], vent);
+ if (vent->next != NULL)
+ (void)putchar(' ');
+ }
+ (void)putchar('\n');
+ if (prtheader && lineno++ == prtheader - 4) {
+ (void)putchar('\n');
+ printheader();
+ lineno = 0;
+ }
+ }
+ exit(eval);
+}
+
+static void
+scanvars()
+{
+ struct varent *vent;
+ VAR *v;
+ 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--;
+}
+
+static char *
+fmt(fn, ki, comm, maxlen)
+ char **(*fn) __P((kvm_t *, const struct kinfo_proc *, int));
+ KINFO *ki;
+ char *comm;
+ int maxlen;
+{
+ char *s;
+
+ if ((s =
+ fmt_argv((*fn)(kd, ki->ki_p, termwidth), comm, maxlen)) == NULL)
+ err(1, NULL);
+ return (s);
+}
+
+static void
+saveuser(ki)
+ KINFO *ki;
+{
+ struct pstats pstats;
+ struct usave *usp;
+
+ usp = &ki->ki_u;
+ if (kvm_read(kd, (u_long)&KI_PROC(ki)->p_addr->u_stats,
+ (char *)&pstats, sizeof(pstats)) == sizeof(pstats)) {
+ /*
+ * The u-area might be swapped out, and we can't get
+ * at it because we have a crashdump and no swap.
+ * If it's here fill in these fields, otherwise, just
+ * leave them 0.
+ */
+ usp->u_start = pstats.p_start;
+ usp->u_ru = pstats.p_ru;
+ usp->u_cru = pstats.p_cru;
+ usp->u_valid = 1;
+ } else
+ usp->u_valid = 0;
+ /*
+ * save arguments if needed
+ */
+ if (needcomm)
+ ki->ki_args = fmt(kvm_getargv, ki, KI_PROC(ki)->p_comm,
+ MAXCOMLEN);
+ else
+ ki->ki_args = NULL;
+ if (needenv)
+ ki->ki_env = fmt(kvm_getenvv, ki, (char *)NULL, 0);
+ else
+ ki->ki_env = NULL;
+}
+
+static int
+pscomp(a, b)
+ const void *a, *b;
+{
+ int i;
+#ifdef NEWVM
+#define VSIZE(k) (KI_EPROC(k)->e_vm.vm_dsize + KI_EPROC(k)->e_vm.vm_ssize + \
+ KI_EPROC(k)->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((KINFO *)b) - getpcpu((KINFO *)a));
+ if (sortby == SORTMEM)
+ return (VSIZE((KINFO *)b) - VSIZE((KINFO *)a));
+ i = KI_EPROC((KINFO *)a)->e_tdev - KI_EPROC((KINFO *)b)->e_tdev;
+ if (i == 0)
+ i = KI_PROC((KINFO *)a)->p_pid - KI_PROC((KINFO *)b)->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.
+ */
+static 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(1, NULL);
+ /*
+ * 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++;
+ memmove(ns, s, (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);
+}
+
+static void
+usage()
+{
+
+ (void)fprintf(stderr,
+ "usage:\t%s\n\t %s\n\t%s\n",
+ "ps [-aChjlmrSTuvwx] [-O|o fmt] [-p pid] [-t tty]",
+ "[-M core] [-N system] [-W swap]",
+ "ps [-L]");
+ exit(1);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-24 21:00:17 +0000