/* $OpenBSD: ps.c,v 1.64 2015/04/09 19:48:25 okan Exp $ */ /* $NetBSD: ps.c,v 1.15 1995/05/18 20:33:25 mycroft Exp $ */ /*- * 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. 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. */ #include /* MAXCOMLEN NODEV */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ps.h" extern char *__progname; struct varent *vhead; int eval; /* exit value */ int rawcpu; /* -C */ int sumrusage; /* -S */ int termwidth; /* width of screen (0 == infinity) */ int totwidth; /* calculated width of requested variables */ int needcomm, needenv, neednlist, commandonly; enum sort { DEFAULT, SORTMEM, SORTCPU } sortby = DEFAULT; static char *kludge_oldps_options(char *); static int pscomp(const void *, const void *); static void scanvars(void); static void usage(void); char dfmt[] = "pid tt state time command"; char tfmt[] = "pid tid 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 kvm_sysctl_only; int main(int argc, char *argv[]) { struct kinfo_proc *kp, **kinfo; struct varent *vent; struct winsize ws; struct passwd *pwd; dev_t ttydev; pid_t pid; uid_t uid; int all, ch, flag, i, fmt, lineno, nentries; int prtheader, showthreads, wflag, kflag, what, Uflag, xflg; char *nlistf, *memf, *swapf, *cols, errbuf[_POSIX2_LINE_MAX]; if ((cols = getenv("COLUMNS")) != NULL && *cols != '\0') { const char *errstr; termwidth = strtonum(cols, 1, INT_MAX, &errstr); if (errstr != NULL) warnx("COLUMNS: %s: %s", cols, errstr); } if (termwidth == 0) { if ((ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == -1 && ioctl(STDERR_FILENO, TIOCGWINSZ, &ws) == -1 && ioctl(STDIN_FILENO, TIOCGWINSZ, &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 = showthreads = wflag = kflag = Uflag = xflg = 0; pid = -1; uid = 0; ttydev = NODEV; memf = nlistf = swapf = NULL; while ((ch = getopt(argc, argv, "AaCcegHhjkLlM:mN:O:o:p:rSTt:U:uvW:wx")) != -1) switch (ch) { case 'A': all = 1; xflg = 1; break; case 'a': all = 1; break; case 'C': rawcpu = 1; break; case 'c': commandonly = 1; break; case 'e': /* XXX set ufmt */ needenv = 1; break; case 'g': break; /* no-op */ case 'H': showthreads = 1; break; case 'h': prtheader = ws.ws_row > 5 ? ws.ws_row : 22; break; case 'j': parsefmt(jfmt); fmt = 1; jfmt[0] = '\0'; break; case 'k': kflag = 1; 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[PATH_MAX]; 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': pwd = getpwnam(optarg); if (pwd == NULL) errx(1, "%s: no such user", optarg); uid = pwd->pw_uid; endpwent(); Uflag = xflg = 1; 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 = 1; break; case 'x': xflg = 1; break; 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 (nlistf == NULL && memf == NULL && swapf == NULL) { kd = kvm_openfiles(NULL, NULL, NULL, KVM_NO_FILES, errbuf); kvm_sysctl_only = 1; } else { kd = kvm_openfiles(nlistf, memf, swapf, O_RDONLY, errbuf); } if (kd == NULL) errx(1, "%s", errbuf); if (!fmt) { if (showthreads) parsefmt(tfmt); else parsefmt(dfmt); } /* XXX - should be cleaner */ if (!all && ttydev == NODEV && pid == -1 && !Uflag) { uid = getuid(); Uflag = 1; } /* * scan requested variables, noting what structures are needed, * and adjusting header widths as appropriate. */ scanvars(); if (neednlist && !nlistread) (void) donlist(); /* * get proc list */ if (Uflag) { 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 if (kflag) { what = KERN_PROC_KTHREAD; flag = 0; } else { what = KERN_PROC_ALL; flag = 0; } if (showthreads) what |= KERN_PROC_SHOW_THREADS; /* * select procs */ kp = kvm_getprocs(kd, what, flag, sizeof(*kp), &nentries); if (kp == NULL) errx(1, "%s", kvm_geterr(kd)); /* * print header */ printheader(); if (nentries == 0) exit(1); /* * sort proc list, we convert from an array of structs to an array * of pointers to make the sort cheaper. */ if ((kinfo = reallocarray(NULL, nentries, sizeof(*kinfo))) == NULL) err(1, "failed to allocate memory for proc pointers"); for (i = 0; i < nentries; i++) kinfo[i] = &kp[i]; qsort(kinfo, nentries, sizeof(*kinfo), pscomp); /* * for each proc, call each variable output function. */ for (i = lineno = 0; i < nentries; i++) { if (showthreads == 0 && (kinfo[i]->p_flag & P_THREAD) != 0) continue; if (xflg == 0 && ((int)kinfo[i]->p_tdev == NODEV || (kinfo[i]->p_psflags & PS_CONTROLT ) == 0)) continue; if (showthreads && kinfo[i]->p_tid == -1) 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(void) { 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 & COMM) needcomm = 1; if (v->flag & NLIST) neednlist = 1; } totwidth--; } static int pscomp(const void *v1, const void *v2) { const struct kinfo_proc *kp1 = *(const struct kinfo_proc **)v1; const struct kinfo_proc *kp2 = *(const struct kinfo_proc **)v2; int i; #define VSIZE(k) ((k)->p_vm_dsize + (k)->p_vm_ssize + (k)->p_vm_tsize) if (sortby == SORTCPU && (i = getpcpu(kp2) - getpcpu(kp1)) != 0) return (i); if (sortby == SORTMEM && (i = VSIZE(kp2) - VSIZE(kp1)) != 0) return (i); if ((i = kp1->p_tdev - kp2->p_tdev) == 0 && (i = kp1->p_ustart_sec - kp2->p_ustart_sec) == 0) i = kp1->p_ustart_usec - kp2->p_ustart_usec; 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(char *s) { size_t len; char *newopts, *ns, *cp; len = strlen(s); if ((newopts = ns = malloc(2 + len + 1)) == 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((unsigned char)*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((unsigned char)*cp) && (cp == s || (cp[-1] != 't' && cp[-1] != 'p' && (cp - 1 == s || cp[-2] != 't')))) *ns++ = 'p'; /* and append the number */ (void)strlcpy(ns, cp, newopts + len + 3 - ns); return (newopts); } static void usage(void) { (void)fprintf(stderr, "usage: %s [-AaCceHhjkLlmrSTuvwx] [-M core] [-N system] [-O fmt] [-o fmt] [-p pid]\n", __progname); (void)fprintf(stderr, "%-*s[-t tty] [-U username] [-W swap]\n", (int)strlen(__progname) + 8, ""); exit(1); }