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1.1 ! root 1: /* ! 2: * Copyright (c) 1980 Regents of the University of California. ! 3: * All rights reserved. ! 4: * ! 5: * Redistribution and use in source and binary forms are permitted provided ! 6: * that: (1) source distributions retain this entire copyright notice and ! 7: * comment, and (2) distributions including binaries display the following ! 8: * acknowledgement: ``This product includes software developed by the ! 9: * University of California, Berkeley and its contributors'' in the ! 10: * documentation or other materials provided with the distribution and in ! 11: * all advertising materials mentioning features or use of this software. ! 12: * Neither the name of the University nor the names of its contributors may ! 13: * be used to endorse or promote products derived from this software without ! 14: * specific prior written permission. ! 15: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED ! 16: * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF ! 17: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ! 18: */ ! 19: ! 20: #ifndef lint ! 21: char copyright[] = ! 22: "@(#) Copyright (c) 1980 Regents of the University of California.\n\ ! 23: All rights reserved.\n"; ! 24: #endif /* not lint */ ! 25: ! 26: #ifndef lint ! 27: static char sccsid[] = "@(#)sysline.c 5.16 (Berkeley) 6/24/90"; ! 28: #endif /* not lint */ ! 29: ! 30: /* ! 31: * sysline - system status display on 25th line of terminal ! 32: * j.k.foderaro ! 33: * ! 34: * Prints a variety of information on the special status line of terminals ! 35: * that have a status display capability. Cursor motions, status commands, ! 36: * etc. are gleamed from /etc/termcap. ! 37: * By default, all information is printed, and flags are given on the command ! 38: * line to disable the printing of information. The information and ! 39: * disabling flags are: ! 40: * ! 41: * flag what ! 42: * ----- ---- ! 43: * time of day ! 44: * load average and change in load average in the last 5 mins ! 45: * number of user logged on ! 46: * -p # of processes the users owns which are runnable and the ! 47: * number which are suspended. Processes whose parent is 1 ! 48: * are not counted. ! 49: * -l users who've logged on and off. ! 50: * -m summarize new mail which has arrived ! 51: * ! 52: * <other flags> ! 53: * -r use non reverse video ! 54: * -c turn off 25th line for 5 seconds before redisplaying. ! 55: * -b beep once one the half hour, twice on the hour ! 56: * +N refresh display every N seconds. ! 57: * -i print pid first thing ! 58: * -e do simple print designed for an emacs buffer line ! 59: * -w do the right things for a window ! 60: * -h print hostname between time and load average ! 61: * -D print day/date before time of day ! 62: * -d debug mode - print status line data in human readable format ! 63: * -q quiet mode - don't output diagnostic messages ! 64: * -s print Short (left-justified) line if escapes not allowed ! 65: * -j Print left Justified line regardless ! 66: */ ! 67: ! 68: #define BSD4_2 /* for 4.2 BSD */ ! 69: #define WHO /* turn this on always */ ! 70: #define HOSTNAME /* 4.1a or greater, with hostname() */ ! 71: #define RWHO /* 4.1a or greater, with rwho */ ! 72: #define VMUNIX /* turn this on if you are running on vmunix */ ! 73: #define NEW_BOOTTIME /* 4.1c or greater */ ! 74: ! 75: #define NETPREFIX "ucb" ! 76: #define DEFDELAY 60 /* update status once per minute */ ! 77: /* ! 78: * if MAXLOAD is defined, then if the load average exceeded MAXLOAD ! 79: * then the process table will not be scanned and the log in/out data ! 80: * will not be checked. The purpose of this is to reduced the load ! 81: * on the system when it is loaded. ! 82: */ ! 83: #define MAXLOAD 6.0 ! 84: ! 85: #include <stdio.h> ! 86: #include <sys/param.h> ! 87: #include <sys/types.h> ! 88: #include <sys/signal.h> ! 89: #include <utmp.h> ! 90: #include <ctype.h> ! 91: #ifndef BSD4_2 ! 92: #include <unctrl.h> ! 93: #endif ! 94: #include <sys/time.h> ! 95: #include <sys/stat.h> ! 96: #ifdef VMUNIX ! 97: #include <nlist.h> ! 98: #include <sys/vtimes.h> ! 99: #include <sys/proc.h> ! 100: #endif ! 101: #ifdef pdp11 ! 102: #include <a.out.h> ! 103: #include <sys/proc.h> ! 104: #endif ! 105: #include <curses.h> ! 106: #undef nl ! 107: #ifdef TERMINFO ! 108: #include <term.h> ! 109: #endif TERMINFO ! 110: ! 111: #ifdef RWHO ! 112: #include <protocols/rwhod.h> ! 113: ! 114: #define DOWN_THRESHOLD (11 * 60) ! 115: ! 116: struct remotehost { ! 117: char *rh_host; ! 118: int rh_file; ! 119: } remotehost[10]; ! 120: int nremotes = 0; ! 121: #endif RWHO ! 122: ! 123: #include "pathnames.h" ! 124: ! 125: struct nlist nl[] = { ! 126: #ifdef NEW_BOOTTIME ! 127: { "_boottime" }, /* After 4.1a the label changed to "boottime" */ ! 128: #else ! 129: { "_bootime" }, /* Under 4.1a and earlier it is "bootime" */ ! 130: #endif ! 131: #define NL_BOOT 0 ! 132: { "_proc" }, ! 133: #define NL_PROC 1 ! 134: #ifdef VMUNIX ! 135: { "_nproc" }, ! 136: #define NL_NPROC 2 ! 137: #endif ! 138: 0 ! 139: }; ! 140: ! 141: /* stuff for the kernel */ ! 142: int kmem; /* file descriptor for _PATH_KMEM */ ! 143: struct proc *proc, *procNPROC; ! 144: int nproc; ! 145: int procadr; ! 146: double avenrun[3]; /* used for storing load averages */ ! 147: ! 148: /* ! 149: * In order to determine how many people are logged on and who has ! 150: * logged in or out, we read in the /etc/utmp file. We also keep track of ! 151: * the previous utmp file. ! 152: */ ! 153: int ut = -1; /* the file descriptor */ ! 154: struct utmp *new, *old; ! 155: char *status; /* per tty status bits, see below */ ! 156: int nentries; /* number of utmp entries */ ! 157: /* string lengths for printing */ ! 158: #define LINESIZE (sizeof old->ut_line) ! 159: #define NAMESIZE (sizeof old->ut_name) ! 160: /* ! 161: * Status codes to say what has happened to a particular entry in utmp. ! 162: * NOCH means no change, ON means new person logged on, ! 163: * OFF means person logged off. ! 164: */ ! 165: #define NOCH 0 ! 166: #define ON 0x1 ! 167: #define OFF 0x2 ! 168: ! 169: #ifdef WHO ! 170: char whofilename[100]; ! 171: char whofilename2[100]; ! 172: #endif ! 173: ! 174: #ifdef HOSTNAME ! 175: char hostname[MAXHOSTNAMELEN+1]; /* one more for null termination */ ! 176: #endif ! 177: ! 178: char lockfilename[100]; /* if exists, will prevent us from running */ ! 179: ! 180: /* flags which determine which info is printed */ ! 181: int mailcheck = 1; /* m - do biff like checking of mail */ ! 182: int proccheck = 1; /* p - give information on processes */ ! 183: int logcheck = 1; /* l - tell who logs in and out */ ! 184: int hostprint = 0; /* h - print out hostname */ ! 185: int dateprint = 0; /* h - print out day/date */ ! 186: int quiet = 0; /* q - hush diagnostic messages */ ! 187: ! 188: /* flags which determine how things are printed */ ! 189: int clr_bet_ref = 0; /* c - clear line between refeshes */ ! 190: int reverse = 1; /* r - use reverse video */ ! 191: int shortline = 0; /* s - short (left-justified) if escapes not allowed */ ! 192: int leftline = 0; /* j - left-justified even if escapes allowed */ ! 193: ! 194: /* flags which have terminal do random things */ ! 195: int beep = 0; /* b - beep every half hour and twice every hour */ ! 196: int printid = 0; /* i - print pid of this process at startup */ ! 197: int synch = 1; /* synchronize with clock */ ! 198: ! 199: /* select output device (status display or straight output) */ ! 200: int emacs = 0; /* e - assume status display */ ! 201: int window = 0; /* w - window mode */ ! 202: int dbug = 0; /* d - debug */ ! 203: ! 204: /* ! 205: * used to turn off reverse video every REVOFF times ! 206: * in an attempt to not wear out the phospher. ! 207: */ ! 208: #define REVOFF 5 ! 209: int revtime = 1; ! 210: ! 211: /* used by mail checker */ ! 212: off_t mailsize = 0; ! 213: off_t linebeg = 0; /* place where we last left off reading */ ! 214: ! 215: /* things used by the string routines */ ! 216: int chars; /* number of printable characters */ ! 217: char *sp; ! 218: char strarr[512]; /* big enough now? */ ! 219: /* flags to stringdump() */ ! 220: char sawmail; /* remember mail was seen to print bells */ ! 221: char mustclear; /* status line messed up */ ! 222: ! 223: /* strings which control status line display */ ! 224: #ifdef TERMINFO ! 225: char *rev_out, *rev_end, *arrows; ! 226: char *tparm(); ! 227: #else ! 228: char to_status_line[64]; ! 229: char from_status_line[64]; ! 230: char dis_status_line[64]; ! 231: char clr_eol[64]; ! 232: char rev_out[20], rev_end[20]; ! 233: char *arrows, *bell = "\007"; ! 234: int eslok; /* escapes on status line okay (reverse, cursor addressing) */ ! 235: int hasws = 0; /* is "ws" explicitly defined? */ ! 236: int columns; ! 237: #define tparm(cap, parm) tgoto((cap), 0, (parm)) ! 238: char *tgoto(); ! 239: #endif ! 240: ! 241: /* to deal with window size changes */ ! 242: #ifdef SIGWINCH ! 243: int sigwinch(); ! 244: char winchanged; /* window size has changed since last update */ ! 245: #endif ! 246: ! 247: /* random globals */ ! 248: char *username; ! 249: char *ourtty; /* keep track of what tty we're on */ ! 250: struct stat stbuf, mstbuf; /* mstbuf for mail check only */ ! 251: unsigned delay = DEFDELAY; ! 252: uid_t uid; ! 253: double loadavg = 0.0; /* current load average */ ! 254: int users = 0; ! 255: ! 256: char *getenv(); ! 257: char *ttyname(); ! 258: char *strcpy1(); ! 259: char *sysrup(); ! 260: char *calloc(); ! 261: char *malloc(); ! 262: int outc(); ! 263: int erroutc(); ! 264: ! 265: main(argc,argv) ! 266: register char **argv; ! 267: { ! 268: int clearbotl(); ! 269: register char *cp; ! 270: char *home; ! 271: extern char *index(); ! 272: ! 273: #ifdef HOSTNAME ! 274: gethostname(hostname, sizeof hostname - 1); ! 275: if ((cp = index(hostname, '.')) != NULL) ! 276: *cp = '\0'; ! 277: #endif ! 278: ! 279: for (argv++; *argv != 0; argv++) ! 280: switch (**argv) { ! 281: case '-': ! 282: for (cp = *argv + 1; *cp; cp++) { ! 283: switch(*cp) { ! 284: case 'r' : /* turn off reverse video */ ! 285: reverse = 0; ! 286: break; ! 287: case 'c': ! 288: clr_bet_ref = 1; ! 289: break; ! 290: case 'h': ! 291: hostprint = 1; ! 292: break; ! 293: case 'D': ! 294: dateprint = 1; ! 295: break; ! 296: #ifdef RWHO ! 297: case 'H': ! 298: if (argv[1] == 0) ! 299: break; ! 300: argv++; ! 301: if (strcmp(hostname, *argv) && ! 302: strcmp(&hostname[sizeof NETPREFIX - 1], *argv)) ! 303: remotehost[nremotes++].rh_host = *argv; ! 304: break; ! 305: #endif RWHO ! 306: case 'm': ! 307: mailcheck = 0; ! 308: break; ! 309: case 'p': ! 310: proccheck = 0; ! 311: break; ! 312: case 'l': ! 313: logcheck = 0; ! 314: break; ! 315: case 'b': ! 316: beep = 1; ! 317: break; ! 318: case 'i': ! 319: printid = 1; ! 320: break; ! 321: case 'w': ! 322: window = 1; ! 323: break; ! 324: case 'e': ! 325: emacs = 1; ! 326: break; ! 327: case 'd': ! 328: dbug = 1; ! 329: break; ! 330: case 'q': ! 331: quiet = 1; ! 332: break; ! 333: case 's': ! 334: shortline = 1; ! 335: break; ! 336: case 'j': ! 337: leftline = 1; ! 338: break; ! 339: default: ! 340: fprintf(stderr, ! 341: "sysline: bad flag: %c\n", *cp); ! 342: } ! 343: } ! 344: break; ! 345: case '+': ! 346: delay = atoi(*argv + 1); ! 347: if (delay < 10) ! 348: delay = 10; ! 349: else if (delay > 500) ! 350: delay = 500; ! 351: synch = 0; /* no more sync */ ! 352: break; ! 353: default: ! 354: fprintf(stderr, "sysline: illegal argument %s\n", ! 355: argv[0]); ! 356: } ! 357: if (emacs) { ! 358: reverse = 0; ! 359: columns = 79; ! 360: } else /* if not to emacs window, initialize terminal dependent info */ ! 361: initterm(); ! 362: #ifdef SIGWINCH ! 363: /* ! 364: * When the window size changes and we are the foreground ! 365: * process (true if -w), we get this signal. ! 366: */ ! 367: signal(SIGWINCH, sigwinch); ! 368: #endif ! 369: getwinsize(); /* get window size from ioctl */ ! 370: ! 371: /* immediately fork and let the parent die if not emacs mode */ ! 372: if (!emacs && !window && !dbug) { ! 373: if (fork()) ! 374: exit(0); ! 375: /* pgrp should take care of things, but ignore them anyway */ ! 376: signal(SIGINT, SIG_IGN); ! 377: signal(SIGQUIT, SIG_IGN); ! 378: #ifdef VMUNIX ! 379: signal(SIGTTOU, SIG_IGN); ! 380: #endif ! 381: } ! 382: /* ! 383: * When we logoff, init will do a "vhangup()" on this ! 384: * tty which turns off I/O access and sends a SIGHUP ! 385: * signal. We catch this and thereby clear the status ! 386: * display. Note that a bug in 4.1bsd caused the SIGHUP ! 387: * signal to be sent to the wrong process, so you had to ! 388: * `kill -HUP' yourself in your .logout file. ! 389: * Do the same thing for SIGTERM, which is the default kill ! 390: * signal. ! 391: */ ! 392: signal(SIGHUP, clearbotl); ! 393: signal(SIGTERM, clearbotl); ! 394: /* ! 395: * This is so kill -ALRM to force update won't screw us up.. ! 396: */ ! 397: signal(SIGALRM, SIG_IGN); ! 398: ! 399: uid = getuid(); ! 400: ourtty = ttyname(2); /* remember what tty we are on */ ! 401: if (printid) { ! 402: printf("%d\n", getpid()); ! 403: fflush(stdout); ! 404: } ! 405: dup2(2, 1); ! 406: ! 407: if ((home = getenv("HOME")) == 0) ! 408: home = ""; ! 409: strcpy1(strcpy1(whofilename, home), "/.who"); ! 410: strcpy1(strcpy1(whofilename2, home), "/.sysline"); ! 411: strcpy1(strcpy1(lockfilename, home), "/.syslinelock"); ! 412: ! 413: if ((kmem = open(_PATH_KMEM,0)) < 0) { ! 414: fprintf(stderr, "Can't open %s\n", _PATH_KMEM); ! 415: exit(1); ! 416: } ! 417: readnamelist(); ! 418: if (proccheck) ! 419: initprocread(); ! 420: if (mailcheck) ! 421: if ((username = getenv("USER")) == 0) ! 422: mailcheck = 0; ! 423: else { ! 424: chdir(_PATH_MAILDIR); ! 425: if (stat(username, &mstbuf) >= 0) ! 426: mailsize = mstbuf.st_size; ! 427: else ! 428: mailsize = 0; ! 429: } ! 430: ! 431: while (emacs || window || isloggedin()) ! 432: if (access(lockfilename, 0) >= 0) ! 433: sleep(60); ! 434: else { ! 435: prtinfo(); ! 436: sleep(delay); ! 437: if (clr_bet_ref) { ! 438: tputs(dis_status_line, 1, outc); ! 439: fflush(stdout); ! 440: sleep(5); ! 441: } ! 442: revtime = (1 + revtime) % REVOFF; ! 443: } ! 444: clearbotl(); ! 445: /*NOTREACHED*/ ! 446: } ! 447: ! 448: isloggedin() ! 449: { ! 450: /* ! 451: * you can tell if a person has logged out if the owner of ! 452: * the tty has changed ! 453: */ ! 454: struct stat statbuf; ! 455: ! 456: return fstat(2, &statbuf) == 0 && statbuf.st_uid == uid; ! 457: } ! 458: ! 459: readnamelist() ! 460: { ! 461: time_t bootime, clock, nintv, time(); ! 462: ! 463: nlist(_PATH_UNIX, nl); ! 464: if (nl[0].n_value == 0) { ! 465: if (!quiet) ! 466: fprintf(stderr, "No namelist\n"); ! 467: return; ! 468: } ! 469: lseek(kmem, (long)nl[NL_BOOT].n_value, 0); ! 470: read(kmem, &bootime, sizeof(bootime)); ! 471: (void) time(&clock); ! 472: nintv = clock - bootime; ! 473: if (nintv <= 0L || nintv > 60L*60L*24L*365L) { ! 474: if (!quiet) ! 475: fprintf(stderr, ! 476: "Time makes no sense... namelist must be wrong\n"); ! 477: nl[NL_PROC].n_value = 0; ! 478: } ! 479: } ! 480: ! 481: readutmp(nflag) ! 482: char nflag; ! 483: { ! 484: static time_t lastmod; /* initially zero */ ! 485: static off_t utmpsize; /* ditto */ ! 486: struct stat st; ! 487: ! 488: if (ut < 0 && (ut = open(_PATH_UTMP, 0)) < 0) { ! 489: fprintf(stderr, "sysline: Can't open %s.\n", _PATH_UTMP); ! 490: exit(1); ! 491: } ! 492: if (fstat(ut, &st) < 0 || st.st_mtime == lastmod) ! 493: return 0; ! 494: lastmod = st.st_mtime; ! 495: if (utmpsize != st.st_size) { ! 496: utmpsize = st.st_size; ! 497: nentries = utmpsize / sizeof (struct utmp); ! 498: if (old == 0) { ! 499: old = (struct utmp *)calloc(utmpsize, 1); ! 500: new = (struct utmp *)calloc(utmpsize, 1); ! 501: } else { ! 502: old = (struct utmp *)realloc((char *)old, utmpsize); ! 503: new = (struct utmp *)realloc((char *)new, utmpsize); ! 504: free(status); ! 505: } ! 506: status = malloc(nentries * sizeof *status); ! 507: if (old == 0 || new == 0 || status == 0) { ! 508: fprintf(stderr, "sysline: Out of memory.\n"); ! 509: exit(1); ! 510: } ! 511: } ! 512: lseek(ut, 0L, 0); ! 513: (void) read(ut, (char *) (nflag ? new : old), utmpsize); ! 514: return 1; ! 515: } ! 516: ! 517: /* ! 518: * read in the process table locations and sizes, and allocate space ! 519: * for storing the process table. This is done only once. ! 520: */ ! 521: initprocread() ! 522: { ! 523: ! 524: if (nl[NL_PROC].n_value == 0) ! 525: return; ! 526: #ifdef VMUNIX ! 527: lseek(kmem, (long)nl[NL_PROC].n_value, 0); ! 528: read(kmem, &procadr, sizeof procadr); ! 529: lseek(kmem, (long)nl[NL_NPROC].n_value, 0); ! 530: read(kmem, &nproc, sizeof nproc); ! 531: #endif ! 532: #ifdef pdp11 ! 533: procadr = nl[NL_PROC].n_value; ! 534: nproc = NPROC; /* from param.h */ ! 535: #endif ! 536: if ((proc = (struct proc *) calloc(nproc, sizeof (struct proc))) == 0) { ! 537: fprintf(stderr, "Out of memory.\n"); ! 538: exit(1); ! 539: } ! 540: procNPROC = proc + nproc; ! 541: } ! 542: ! 543: /* ! 544: * read in the process table. This assumes that initprocread has alread been ! 545: * called to set up storage. ! 546: */ ! 547: readproctab() ! 548: { ! 549: ! 550: if (nl[NL_PROC].n_value == 0) ! 551: return (0); ! 552: lseek(kmem, (long)procadr, 0); ! 553: read(kmem, (char *)proc, nproc * sizeof (struct proc)); ! 554: return (1); ! 555: } ! 556: ! 557: prtinfo() ! 558: { ! 559: int on, off; ! 560: register i; ! 561: char fullprocess; ! 562: ! 563: stringinit(); ! 564: #ifdef SIGWINCH ! 565: if (winchanged) { ! 566: winchanged = 0; ! 567: getwinsize(); ! 568: mustclear = 1; ! 569: } ! 570: #endif ! 571: #ifdef WHO ! 572: /* check for file named .who in the home directory */ ! 573: whocheck(); ! 574: #endif ! 575: timeprint(); ! 576: /* ! 577: * if mail is seen, don't print rest of info, just the mail ! 578: * reverse new and old so that next time we run, we won't lose log ! 579: * in and out information ! 580: */ ! 581: if (mailcheck && (sawmail = mailseen())) ! 582: goto bottom; ! 583: #ifdef HOSTNAME ! 584: #ifdef RWHO ! 585: for (i = 0; i < nremotes; i++) { ! 586: char *tmp; ! 587: ! 588: stringspace(); ! 589: tmp = sysrup(remotehost + i); ! 590: stringcat(tmp, strlen(tmp)); ! 591: } ! 592: #endif ! 593: /* ! 594: * print hostname info if requested ! 595: */ ! 596: if (hostprint) { ! 597: stringspace(); ! 598: stringcat(hostname, -1); ! 599: } ! 600: #endif ! 601: /* ! 602: * print load average and difference between current load average ! 603: * and the load average 5 minutes ago ! 604: */ ! 605: if (getloadavg(avenrun, 3) > 0) { ! 606: double diff; ! 607: ! 608: stringspace(); ! 609: ! 610: if ((diff = avenrun[0] - avenrun[1]) < 0.0) ! 611: stringprt("%.1f %.1f", avenrun[0], diff); ! 612: else ! 613: stringprt("%.1f +%.1f", avenrun[0], diff); ! 614: loadavg = avenrun[0]; /* remember load average */ ! 615: } ! 616: /* ! 617: * print log on and off information ! 618: */ ! 619: stringspace(); ! 620: fullprocess = 1; ! 621: #ifdef MAXLOAD ! 622: if (loadavg > MAXLOAD) ! 623: fullprocess = 0; /* too loaded to run */ ! 624: #endif ! 625: /* ! 626: * Read utmp file (logged in data) only if we are doing a full ! 627: * process, or if this is the first time and we are calculating ! 628: * the number of users. ! 629: */ ! 630: on = off = 0; ! 631: if (users == 0) { /* first time */ ! 632: if (readutmp(0)) ! 633: for (i = 0; i < nentries; i++) ! 634: if (old[i].ut_name[0]) ! 635: users++; ! 636: } else if (fullprocess && readutmp(1)) { ! 637: struct utmp *tmp; ! 638: ! 639: users = 0; ! 640: for (i = 0; i < nentries; i++) { ! 641: if (strncmp(old[i].ut_name, ! 642: new[i].ut_name, NAMESIZE) == 0) ! 643: status[i] = NOCH; ! 644: else if (old[i].ut_name[0] == '\0') { ! 645: status[i] = ON; ! 646: on++; ! 647: } else if (new[i].ut_name[0] == '\0') { ! 648: status[i] = OFF; ! 649: off++; ! 650: } else { ! 651: status[i] = ON | OFF; ! 652: on++; ! 653: off++; ! 654: } ! 655: if (new[i].ut_name[0]) ! 656: users++; ! 657: } ! 658: tmp = new; ! 659: new = old; ! 660: old = tmp; ! 661: } ! 662: /* ! 663: * Print: ! 664: * 1. number of users ! 665: * 2. a * for unread mail ! 666: * 3. a - if load is too high ! 667: * 4. number of processes running and stopped ! 668: */ ! 669: stringprt("%du", users); ! 670: if (mailsize > 0 && mstbuf.st_mtime >= mstbuf.st_atime) ! 671: stringcat("*", -1); ! 672: if (!fullprocess && (proccheck || logcheck)) ! 673: stringcat("-", -1); ! 674: if (fullprocess && proccheck && readproctab()) { ! 675: register struct proc *p; ! 676: int procrun, procstop; ! 677: ! 678: /* ! 679: * We are only interested in processes which have the same ! 680: * uid as us, and whose parent process id is not 1. ! 681: */ ! 682: procrun = procstop = 0; ! 683: for (p = proc; p < procNPROC; p++) { ! 684: if (p->p_stat == 0 || p->p_pgrp == 0 || ! 685: p->p_uid != uid || p->p_ppid == 1) ! 686: continue; ! 687: switch (p->p_stat) { ! 688: case SSTOP: ! 689: procstop++; ! 690: break; ! 691: case SSLEEP: ! 692: /* ! 693: * Sleep can mean waiting for a signal or just ! 694: * in a disk or page wait queue ready to run. ! 695: * We can tell if it is the later by the pri ! 696: * being negative. ! 697: */ ! 698: if (p->p_pri < PZERO) ! 699: procrun++; ! 700: break; ! 701: case SWAIT: ! 702: case SRUN: ! 703: case SIDL: ! 704: procrun++; ! 705: } ! 706: } ! 707: if (procrun > 0 || procstop > 0) { ! 708: stringspace(); ! 709: if (procrun > 0 && procstop > 0) ! 710: stringprt("%dr %ds", procrun, procstop); ! 711: else if (procrun > 0) ! 712: stringprt("%dr", procrun); ! 713: else ! 714: stringprt("%ds", procstop); ! 715: } ! 716: } ! 717: /* ! 718: * If anyone has logged on or off, and we are interested in it, ! 719: * print it out. ! 720: */ ! 721: if (logcheck) { ! 722: /* old and new have already been swapped */ ! 723: if (on) { ! 724: stringspace(); ! 725: stringcat("on:", -1); ! 726: for (i = 0; i < nentries; i++) ! 727: if (status[i] & ON) { ! 728: stringprt(" %.8s", old[i].ut_name); ! 729: ttyprint(old[i].ut_line); ! 730: } ! 731: } ! 732: if (off) { ! 733: stringspace(); ! 734: stringcat("off:", -1); ! 735: for (i = 0; i < nentries; i++) ! 736: if (status[i] & OFF) { ! 737: stringprt(" %.8s", new[i].ut_name); ! 738: ttyprint(new[i].ut_line); ! 739: } ! 740: } ! 741: } ! 742: bottom: ! 743: /* dump out what we know */ ! 744: stringdump(); ! 745: } ! 746: ! 747: timeprint() ! 748: { ! 749: long curtime; ! 750: struct tm *tp, *localtime(); ! 751: static int beepable = 1; ! 752: ! 753: /* always print time */ ! 754: time(&curtime); ! 755: tp = localtime(&curtime); ! 756: if (dateprint) ! 757: stringprt("%.11s", ctime(&curtime)); ! 758: stringprt("%d:%02d", tp->tm_hour > 12 ? tp->tm_hour - 12 : ! 759: (tp->tm_hour == 0 ? 12 : tp->tm_hour), tp->tm_min); ! 760: if (synch) /* sync with clock */ ! 761: delay = 60 - tp->tm_sec; ! 762: /* ! 763: * Beepable is used to insure that we get at most one set of beeps ! 764: * every half hour. ! 765: */ ! 766: if (beep) ! 767: if (beepable) { ! 768: if (tp->tm_min == 30) { ! 769: tputs(bell, 1, outc); ! 770: fflush(stdout); ! 771: beepable = 0; ! 772: } else if (tp->tm_min == 0) { ! 773: tputs(bell, 1, outc); ! 774: fflush(stdout); ! 775: sleep(2); ! 776: tputs(bell, 1, outc); ! 777: fflush(stdout); ! 778: beepable = 0; ! 779: } ! 780: } else ! 781: if (tp->tm_min != 0 && tp->tm_min != 30) ! 782: beepable = 1; ! 783: } ! 784: ! 785: /* ! 786: * whocheck -- check for file named .who and print it on the who line first ! 787: */ ! 788: whocheck() ! 789: { ! 790: int chss; ! 791: register char *p; ! 792: char buff[81]; ! 793: int whofile; ! 794: ! 795: if ((whofile = open(whofilename, 0)) < 0 && ! 796: (whofile = open(whofilename2, 0)) < 0) ! 797: return; ! 798: chss = read(whofile, buff, sizeof buff - 1); ! 799: close(whofile); ! 800: if (chss <= 0) ! 801: return; ! 802: buff[chss] = '\0'; ! 803: /* ! 804: * Remove all line feeds, and replace by spaces if they are within ! 805: * the message, else replace them by nulls. ! 806: */ ! 807: for (p = buff; *p;) ! 808: if (*p == '\n') ! 809: if (p[1]) ! 810: *p++ = ' '; ! 811: else ! 812: *p = '\0'; ! 813: else ! 814: p++; ! 815: stringcat(buff, p - buff); ! 816: stringspace(); ! 817: } ! 818: ! 819: /* ! 820: * ttyprint -- given the name of a tty, print in the string buffer its ! 821: * short name surrounded by parenthesis. ! 822: * ttyxx is printed as (xx) ! 823: * console is printed as (cty) ! 824: */ ! 825: ttyprint(name) ! 826: char *name; ! 827: { ! 828: char buff[11]; ! 829: ! 830: if (strncmp(name, "tty", 3) == 0) ! 831: stringprt("(%.*s)", LINESIZE - 3, name + 3); ! 832: else if (strcmp(name, "console") == 0) ! 833: stringcat("(cty)", -1); ! 834: else ! 835: stringprt("(%.*s)", LINESIZE, name); ! 836: } ! 837: ! 838: /* ! 839: * mail checking function ! 840: * returns 0 if no mail seen ! 841: */ ! 842: mailseen() ! 843: { ! 844: FILE *mfd; ! 845: register n; ! 846: register char *cp; ! 847: char lbuf[100], sendbuf[100], *bufend; ! 848: char seenspace; ! 849: int retval = 0; ! 850: ! 851: if (stat(username, &mstbuf) < 0) { ! 852: mailsize = 0; ! 853: return 0; ! 854: } ! 855: if (mstbuf.st_size <= mailsize || (mfd = fopen(username,"r")) == NULL) { ! 856: mailsize = mstbuf.st_size; ! 857: return 0; ! 858: } ! 859: fseek(mfd, mailsize, 0); ! 860: while ((n = readline(mfd, lbuf, sizeof lbuf)) >= 0 && ! 861: strncmp(lbuf, "From ", 5) != 0) ! 862: ; ! 863: if (n < 0) { ! 864: stringcat("Mail has just arrived", -1); ! 865: goto out; ! 866: } ! 867: retval = 1; ! 868: /* ! 869: * Found a From line, get second word, which is the sender, ! 870: * and print it. ! 871: */ ! 872: for (cp = lbuf + 5; *cp && *cp != ' '; cp++) /* skip to blank */ ! 873: ; ! 874: *cp = '\0'; /* terminate name */ ! 875: stringspace(); ! 876: stringprt("Mail from %s ", lbuf + 5); ! 877: /* ! 878: * Print subject, and skip over header. ! 879: */ ! 880: while ((n = readline(mfd, lbuf, sizeof lbuf)) > 0) ! 881: if (strncmp(lbuf, "Subject:", 8) == 0) ! 882: stringprt("on %s ", lbuf + 9); ! 883: if (!emacs) ! 884: stringcat(arrows, 2); ! 885: else ! 886: stringcat(": ", 2); ! 887: if (n < 0) /* already at eof */ ! 888: goto out; ! 889: /* ! 890: * Print as much of the letter as we can. ! 891: */ ! 892: cp = sendbuf; ! 893: if ((n = columns - chars) > sizeof sendbuf - 1) ! 894: n = sizeof sendbuf - 1; ! 895: bufend = cp + n; ! 896: seenspace = 0; ! 897: while ((n = readline(mfd, lbuf, sizeof lbuf)) >= 0) { ! 898: register char *rp; ! 899: ! 900: if (strncmp(lbuf, "From ", 5) == 0) ! 901: break; ! 902: if (cp >= bufend) ! 903: continue; ! 904: if (!seenspace) { ! 905: *cp++ = ' '; /* space before lines */ ! 906: seenspace = 1; ! 907: } ! 908: rp = lbuf; ! 909: while (*rp && cp < bufend) ! 910: if (isspace(*rp)) { ! 911: if (!seenspace) { ! 912: *cp++ = ' '; ! 913: seenspace = 1; ! 914: } ! 915: rp++; ! 916: } else { ! 917: *cp++ = *rp++; ! 918: seenspace = 0; ! 919: } ! 920: } ! 921: *cp = 0; ! 922: stringcat(sendbuf, -1); ! 923: /* ! 924: * Want to update write time so a star will ! 925: * appear after the number of users until the ! 926: * user reads his mail. ! 927: */ ! 928: out: ! 929: mailsize = linebeg; ! 930: fclose(mfd); ! 931: touch(username); ! 932: return retval; ! 933: } ! 934: ! 935: /* ! 936: * readline -- read a line from fp and store it in buf. ! 937: * return the number of characters read. ! 938: */ ! 939: readline(fp, buf, n) ! 940: register FILE *fp; ! 941: char *buf; ! 942: register n; ! 943: { ! 944: register c; ! 945: register char *cp = buf; ! 946: ! 947: linebeg = ftell(fp); /* remember loc where line begins */ ! 948: cp = buf; ! 949: while (--n > 0 && (c = getc(fp)) != EOF && c != '\n') ! 950: *cp++ = c; ! 951: *cp = 0; ! 952: if (c == EOF && cp - buf == 0) ! 953: return -1; ! 954: return cp - buf; ! 955: } ! 956: ! 957: ! 958: /* ! 959: * string hacking functions ! 960: */ ! 961: ! 962: stringinit() ! 963: { ! 964: sp = strarr; ! 965: chars = 0; ! 966: } ! 967: ! 968: /*VARARGS1*/ ! 969: stringprt(format, a, b, c) ! 970: char *format; ! 971: { ! 972: char tempbuf[150]; ! 973: ! 974: (void)sprintf(tempbuf, format, a, b, c); ! 975: stringcat(tempbuf, -1); ! 976: } ! 977: ! 978: stringdump() ! 979: { ! 980: char bigbuf[sizeof strarr + 200]; ! 981: register char *bp = bigbuf; ! 982: register int i; ! 983: ! 984: if (!emacs) { ! 985: if (sawmail) ! 986: bp = strcpy1(bp, bell); ! 987: if (eslok) ! 988: bp = strcpy1(bp, tparm(to_status_line, ! 989: leftline ? 0 : columns - chars)); ! 990: else { ! 991: bp = strcpy1(bp, to_status_line); ! 992: if (!shortline && !leftline) ! 993: for (i = columns - chars; --i >= 0;) ! 994: *bp++ = ' '; ! 995: } ! 996: if (reverse && revtime != 0) ! 997: bp = strcpy1(bp, rev_out); ! 998: } ! 999: *sp = 0; ! 1000: bp = strcpy1(bp, strarr); ! 1001: if (!emacs) { ! 1002: if (reverse) ! 1003: bp = strcpy1(bp, rev_end); ! 1004: bp = strcpy1(bp, from_status_line); ! 1005: if (sawmail) ! 1006: bp = strcpy1(strcpy1(bp, bell), bell); ! 1007: *bp = 0; ! 1008: tputs(bigbuf, 1, outc); ! 1009: if (mustclear) { ! 1010: mustclear = 0; ! 1011: tputs(clr_eol, 1, outc); ! 1012: } ! 1013: if (dbug) ! 1014: putchar('\n'); ! 1015: fflush(stdout); ! 1016: } else ! 1017: write(2, bigbuf, bp - bigbuf); ! 1018: } ! 1019: ! 1020: stringspace() ! 1021: { ! 1022: if (reverse && revtime != 0) { ! 1023: #ifdef TERMINFO ! 1024: stringcat(rev_end, ! 1025: magic_cookie_glitch <= 0 ? 0 : magic_cookie_glitch); ! 1026: stringcat(" ", 1); ! 1027: stringcat(rev_out, ! 1028: magic_cookie_glitch <= 0 ? 0 : magic_cookie_glitch); ! 1029: #else ! 1030: stringcat(rev_end, 0); ! 1031: stringcat(" ", 1); ! 1032: stringcat(rev_out, 0); ! 1033: #endif TERMINFO ! 1034: } else ! 1035: stringcat(" ", 1); ! 1036: } ! 1037: ! 1038: /* ! 1039: * stringcat :: concatenate the characters in string str to the list we are ! 1040: * building to send out. ! 1041: * str - the string to print. may contain funny (terminal control) chars. ! 1042: * n - the number of printable characters in the string ! 1043: * or if -1 then str is all printable so we can truncate it, ! 1044: * otherwise don't print only half a string. ! 1045: */ ! 1046: stringcat(str, n) ! 1047: register char *str; ! 1048: register n; ! 1049: { ! 1050: register char *p = sp; ! 1051: ! 1052: if (n < 0) { /* truncate */ ! 1053: n = columns - chars; ! 1054: while ((*p++ = *str++) && --n >= 0) ! 1055: ; ! 1056: p--; ! 1057: chars += p - sp; ! 1058: sp = p; ! 1059: } else if (chars + n <= columns) { /* don't truncate */ ! 1060: while (*p++ = *str++) ! 1061: ; ! 1062: chars += n; ! 1063: sp = p - 1; ! 1064: } ! 1065: } ! 1066: ! 1067: /* ! 1068: * touch :: update the modify time of a file. ! 1069: */ ! 1070: touch(name) ! 1071: char *name; /* name of file */ ! 1072: { ! 1073: register fd; ! 1074: char buf; ! 1075: ! 1076: if ((fd = open(name, 2)) >= 0) { ! 1077: read(fd, &buf, 1); /* get first byte */ ! 1078: lseek(fd, 0L, 0); /* go to beginning */ ! 1079: write(fd, &buf, 1); /* and rewrite first byte */ ! 1080: close(fd); ! 1081: } ! 1082: } ! 1083: ! 1084: ! 1085: /* ! 1086: * clearbotl :: clear bottom line. ! 1087: * called when process quits or is killed. ! 1088: * it clears the bottom line of the terminal. ! 1089: */ ! 1090: clearbotl() ! 1091: { ! 1092: register int fd; ! 1093: int exit(); ! 1094: ! 1095: signal(SIGALRM, exit); ! 1096: alarm(30); /* if can't open in 30 secs, just die */ ! 1097: if (!emacs && (fd = open(ourtty, 1)) >= 0) { ! 1098: write(fd, dis_status_line, strlen(dis_status_line)); ! 1099: close(fd); ! 1100: } ! 1101: #ifdef PROF ! 1102: if (chdir(_PATH_SYSLINE) < 0) ! 1103: (void) chdir(_PATH_TMP); ! 1104: #endif ! 1105: exit(0); ! 1106: } ! 1107: ! 1108: #ifdef TERMINFO ! 1109: initterm() ! 1110: { ! 1111: static char standbuf[40]; ! 1112: ! 1113: setupterm(0, 1, 0); ! 1114: if (!window && !has_status_line) { ! 1115: /* not an appropriate terminal */ ! 1116: if (!quiet) ! 1117: fprintf(stderr, "sysline: no status capability for %s\n", ! 1118: getenv("TERM")); ! 1119: exit(1); ! 1120: } ! 1121: if (window || status_line_esc_ok) { ! 1122: if (set_attributes) { ! 1123: /* reverse video mode */ ! 1124: strcpy(standbuf, ! 1125: tparm(set_attributes,0,0,1,0,0,0,0,0,0)); ! 1126: rev_out = standbuf; ! 1127: rev_end = exit_attribute_mode; ! 1128: } else if (enter_standout_mode && exit_standout_mode) { ! 1129: rev_out = enter_standout_mode; ! 1130: rev_end = exit_standout_mode; ! 1131: } else ! 1132: rev_out = rev_end = ""; ! 1133: } else ! 1134: rev_out = rev_end = ""; ! 1135: columns--; /* avoid cursor wraparound */ ! 1136: } ! 1137: ! 1138: #else /* TERMCAP */ ! 1139: ! 1140: initterm() ! 1141: { ! 1142: char *term, *cp; ! 1143: static char tbuf[1024]; ! 1144: char is2[40]; ! 1145: extern char *UP; ! 1146: ! 1147: if ((term = getenv("TERM")) == NULL) { ! 1148: if (!quiet) ! 1149: fprintf(stderr, ! 1150: "sysline: No TERM variable in enviroment\n"); ! 1151: exit(1); ! 1152: } ! 1153: if (tgetent(tbuf, term) <= 0) { ! 1154: if (!quiet) ! 1155: fprintf(stderr, ! 1156: "sysline: Unknown terminal type: %s\n", term); ! 1157: exit(1); ! 1158: } ! 1159: if (!window && tgetflag("hs") <= 0) { ! 1160: if (!strncmp(term, "h19", 3)) { ! 1161: /* for upward compatability with h19sys */ ! 1162: strcpy(to_status_line, ! 1163: "\033j\033x5\033x1\033Y8%+ \033o"); ! 1164: strcpy(from_status_line, "\033k\033y5"); ! 1165: strcpy(dis_status_line, "\033y1"); ! 1166: strcpy(rev_out, "\033p"); ! 1167: strcpy(rev_end, "\033q"); ! 1168: arrows = "\033Fhh\033G"; ! 1169: columns = 80; ! 1170: UP = "\b"; ! 1171: return; ! 1172: } ! 1173: if (!quiet) ! 1174: fprintf(stderr, ! 1175: "sysline: No status capability for %s\n", term); ! 1176: exit(1); ! 1177: } ! 1178: cp = is2; ! 1179: if (tgetstr("i2", &cp) != NULL) { ! 1180: /* someday tset will do this */ ! 1181: tputs(is2, 1, erroutc); ! 1182: fflush(stdout); ! 1183: } ! 1184: ! 1185: /* the "-1" below is to avoid cursor wraparound problems */ ! 1186: columns = tgetnum("ws"); ! 1187: hasws = columns >= 0; ! 1188: if (!hasws) ! 1189: columns = tgetnum("co"); ! 1190: columns -= 1; ! 1191: if (window) { ! 1192: strcpy(to_status_line, "\r"); ! 1193: cp = dis_status_line; /* use the clear line sequence */ ! 1194: *cp++ = '\r'; ! 1195: tgetstr("ce", &cp); ! 1196: if (leftline) ! 1197: strcpy(from_status_line, dis_status_line + 1); ! 1198: else ! 1199: strcpy(from_status_line, ""); ! 1200: } else { ! 1201: cp = to_status_line; ! 1202: tgetstr("ts", &cp); ! 1203: cp = from_status_line; ! 1204: tgetstr("fs", &cp); ! 1205: cp = dis_status_line; ! 1206: tgetstr("ds", &cp); ! 1207: eslok = tgetflag("es"); ! 1208: } ! 1209: if (eslok || window) { ! 1210: cp = rev_out; ! 1211: tgetstr("so", &cp); ! 1212: cp = rev_end; ! 1213: tgetstr("se", &cp); ! 1214: cp = clr_eol; ! 1215: tgetstr("ce", &cp); ! 1216: } else ! 1217: reverse = 0; /* turn off reverse video */ ! 1218: UP = "\b"; ! 1219: if (!strncmp(term, "h19", 3)) ! 1220: arrows = "\033Fhh\033G"; /* "two tiny graphic arrows" */ ! 1221: else ! 1222: arrows = "->"; ! 1223: } ! 1224: #endif TERMINFO ! 1225: ! 1226: #ifdef RWHO ! 1227: char * ! 1228: sysrup(hp) ! 1229: register struct remotehost *hp; ! 1230: { ! 1231: char filename[100]; ! 1232: struct whod wd; ! 1233: #define WHOD_HDR_SIZE (sizeof (wd) - sizeof (wd.wd_we)) ! 1234: static char buffer[50]; ! 1235: time_t now; ! 1236: ! 1237: /* ! 1238: * rh_file is initially 0. ! 1239: * This is ok since standard input is assumed to exist. ! 1240: */ ! 1241: if (hp->rh_file == 0) { ! 1242: /* ! 1243: * Try rwho hostname file, and if that fails try ucbhostname. ! 1244: */ ! 1245: (void) strcpy1(strcpy1(filename, _PATH_RWHO), hp->rh_host); ! 1246: if ((hp->rh_file = open(filename, 0)) < 0) { ! 1247: (void) strcpy1(strcpy1(strcpy1(filename, _PATH_RWHO), ! 1248: NETPREFIX), hp->rh_host); ! 1249: hp->rh_file = open(filename, 0); ! 1250: } ! 1251: } ! 1252: if (hp->rh_file < 0) { ! 1253: (void) sprintf(buffer, "%s?", hp->rh_host); ! 1254: return(buffer); ! 1255: } ! 1256: (void) lseek(hp->rh_file, (off_t)0, 0); ! 1257: if (read(hp->rh_file, (char *)&wd, WHOD_HDR_SIZE) != WHOD_HDR_SIZE) { ! 1258: (void) sprintf(buffer, "%s ?", hp->rh_host); ! 1259: return(buffer); ! 1260: } ! 1261: (void) time(&now); ! 1262: if (now - wd.wd_recvtime > DOWN_THRESHOLD) { ! 1263: long interval; ! 1264: long days, hours, minutes; ! 1265: ! 1266: interval = now - wd.wd_recvtime; ! 1267: minutes = (interval + 59) / 60; /* round to minutes */ ! 1268: hours = minutes / 60; /* extract hours from minutes */ ! 1269: minutes %= 60; /* remove hours from minutes */ ! 1270: days = hours / 24; /* extract days from hours */ ! 1271: hours %= 24; /* remove days from hours */ ! 1272: if (days > 7 || days < 0) ! 1273: (void) sprintf(buffer, "%s down", hp->rh_host); ! 1274: else if (days > 0) ! 1275: (void) sprintf(buffer, "%s %d+%d:%02d", ! 1276: hp->rh_host, days, hours, minutes); ! 1277: else ! 1278: (void) sprintf(buffer, "%s %d:%02d", ! 1279: hp->rh_host, hours, minutes); ! 1280: } else ! 1281: (void) sprintf(buffer, "%s %.1f", ! 1282: hp->rh_host, wd.wd_loadav[0]/100.0); ! 1283: return buffer; ! 1284: } ! 1285: #endif RWHO ! 1286: ! 1287: getwinsize() ! 1288: { ! 1289: #ifdef TIOCGWINSZ ! 1290: struct winsize winsize; ! 1291: ! 1292: /* the "-1" below is to avoid cursor wraparound problems */ ! 1293: if (!hasws && ioctl(2, TIOCGWINSZ, (char *)&winsize) >= 0 && ! 1294: winsize.ws_col != 0) ! 1295: columns = winsize.ws_col - 1; ! 1296: #endif ! 1297: } ! 1298: ! 1299: #ifdef SIGWINCH ! 1300: sigwinch() ! 1301: { ! 1302: winchanged++; ! 1303: } ! 1304: #endif ! 1305: ! 1306: char * ! 1307: strcpy1(p, q) ! 1308: register char *p, *q; ! 1309: { ! 1310: ! 1311: while (*p++ = *q++) ! 1312: ; ! 1313: return p - 1; ! 1314: } ! 1315: ! 1316: outc(c) ! 1317: char c; ! 1318: { ! 1319: if (dbug) ! 1320: printf("%s", unctrl(c)); ! 1321: else ! 1322: putchar(c); ! 1323: } ! 1324: ! 1325: erroutc(c) ! 1326: char c; ! 1327: { ! 1328: if (dbug) ! 1329: fprintf(stderr, "%s", unctrl(c)); ! 1330: else ! 1331: putc(c, stderr); ! 1332: }
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