14b88c807SRodney W. Grimes /*- 24b88c807SRodney W. Grimes * Copyright (c) 1991, 1993 34b88c807SRodney W. Grimes * The Regents of the University of California. All rights reserved. 44b88c807SRodney W. Grimes * 54b88c807SRodney W. Grimes * This code is derived from software contributed to Berkeley by 64b88c807SRodney W. Grimes * Kenneth Almquist. 74b88c807SRodney W. Grimes * 84b88c807SRodney W. Grimes * Redistribution and use in source and binary forms, with or without 94b88c807SRodney W. Grimes * modification, are permitted provided that the following conditions 104b88c807SRodney W. Grimes * are met: 114b88c807SRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 124b88c807SRodney W. Grimes * notice, this list of conditions and the following disclaimer. 134b88c807SRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 144b88c807SRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 154b88c807SRodney W. Grimes * documentation and/or other materials provided with the distribution. 164b88c807SRodney W. Grimes * 3. All advertising materials mentioning features or use of this software 174b88c807SRodney W. Grimes * must display the following acknowledgement: 184b88c807SRodney W. Grimes * This product includes software developed by the University of 194b88c807SRodney W. Grimes * California, Berkeley and its contributors. 204b88c807SRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 214b88c807SRodney W. Grimes * may be used to endorse or promote products derived from this software 224b88c807SRodney W. Grimes * without specific prior written permission. 234b88c807SRodney W. Grimes * 244b88c807SRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 254b88c807SRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 264b88c807SRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 274b88c807SRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 284b88c807SRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 294b88c807SRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 304b88c807SRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 314b88c807SRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 324b88c807SRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 334b88c807SRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 344b88c807SRodney W. Grimes * SUCH DAMAGE. 354b88c807SRodney W. Grimes */ 364b88c807SRodney W. Grimes 374b88c807SRodney W. Grimes #ifndef lint 384b88c807SRodney W. Grimes static char sccsid[] = "@(#)miscbltin.c 8.2 (Berkeley) 4/16/94"; 394b88c807SRodney W. Grimes #endif /* not lint */ 404b88c807SRodney W. Grimes 414b88c807SRodney W. Grimes /* 424b88c807SRodney W. Grimes * Miscelaneous builtins. 434b88c807SRodney W. Grimes */ 444b88c807SRodney W. Grimes 454b88c807SRodney W. Grimes #include "shell.h" 464b88c807SRodney W. Grimes #include "options.h" 474b88c807SRodney W. Grimes #include "var.h" 484b88c807SRodney W. Grimes #include "output.h" 494b88c807SRodney W. Grimes #include "memalloc.h" 504b88c807SRodney W. Grimes #include "error.h" 514b88c807SRodney W. Grimes #include "mystring.h" 524b88c807SRodney W. Grimes 534b88c807SRodney W. Grimes #undef eflag 544b88c807SRodney W. Grimes 554b88c807SRodney W. Grimes extern char **argptr; /* argument list for builtin command */ 564b88c807SRodney W. Grimes 574b88c807SRodney W. Grimes 584b88c807SRodney W. Grimes /* 594b88c807SRodney W. Grimes * The read builtin. The -e option causes backslashes to escape the 604b88c807SRodney W. Grimes * following character. 614b88c807SRodney W. Grimes * 624b88c807SRodney W. Grimes * This uses unbuffered input, which may be avoidable in some cases. 634b88c807SRodney W. Grimes */ 644b88c807SRodney W. Grimes 654b88c807SRodney W. Grimes readcmd(argc, argv) char **argv; { 664b88c807SRodney W. Grimes char **ap; 674b88c807SRodney W. Grimes int backslash; 684b88c807SRodney W. Grimes char c; 694b88c807SRodney W. Grimes int eflag; 704b88c807SRodney W. Grimes char *prompt; 714b88c807SRodney W. Grimes char *ifs; 724b88c807SRodney W. Grimes char *p; 734b88c807SRodney W. Grimes int startword; 744b88c807SRodney W. Grimes int status; 754b88c807SRodney W. Grimes int i; 764b88c807SRodney W. Grimes 774b88c807SRodney W. Grimes eflag = 0; 784b88c807SRodney W. Grimes prompt = NULL; 794b88c807SRodney W. Grimes while ((i = nextopt("ep:")) != '\0') { 804b88c807SRodney W. Grimes if (i == 'p') 814b88c807SRodney W. Grimes prompt = optarg; 824b88c807SRodney W. Grimes else 834b88c807SRodney W. Grimes eflag = 1; 844b88c807SRodney W. Grimes } 854b88c807SRodney W. Grimes if (prompt && isatty(0)) { 864b88c807SRodney W. Grimes out2str(prompt); 874b88c807SRodney W. Grimes flushall(); 884b88c807SRodney W. Grimes } 894b88c807SRodney W. Grimes if (*(ap = argptr) == NULL) 904b88c807SRodney W. Grimes error("arg count"); 914b88c807SRodney W. Grimes if ((ifs = bltinlookup("IFS", 1)) == NULL) 924b88c807SRodney W. Grimes ifs = nullstr; 934b88c807SRodney W. Grimes status = 0; 944b88c807SRodney W. Grimes startword = 1; 954b88c807SRodney W. Grimes backslash = 0; 964b88c807SRodney W. Grimes STARTSTACKSTR(p); 974b88c807SRodney W. Grimes for (;;) { 984b88c807SRodney W. Grimes if (read(0, &c, 1) != 1) { 994b88c807SRodney W. Grimes status = 1; 1004b88c807SRodney W. Grimes break; 1014b88c807SRodney W. Grimes } 1024b88c807SRodney W. Grimes if (c == '\0') 1034b88c807SRodney W. Grimes continue; 1044b88c807SRodney W. Grimes if (backslash) { 1054b88c807SRodney W. Grimes backslash = 0; 1064b88c807SRodney W. Grimes if (c != '\n') 1074b88c807SRodney W. Grimes STPUTC(c, p); 1084b88c807SRodney W. Grimes continue; 1094b88c807SRodney W. Grimes } 1104b88c807SRodney W. Grimes if (eflag && c == '\\') { 1114b88c807SRodney W. Grimes backslash++; 1124b88c807SRodney W. Grimes continue; 1134b88c807SRodney W. Grimes } 1144b88c807SRodney W. Grimes if (c == '\n') 1154b88c807SRodney W. Grimes break; 1164b88c807SRodney W. Grimes if (startword && *ifs == ' ' && strchr(ifs, c)) { 1174b88c807SRodney W. Grimes continue; 1184b88c807SRodney W. Grimes } 1194b88c807SRodney W. Grimes startword = 0; 1204b88c807SRodney W. Grimes if (backslash && c == '\\') { 1214b88c807SRodney W. Grimes if (read(0, &c, 1) != 1) { 1224b88c807SRodney W. Grimes status = 1; 1234b88c807SRodney W. Grimes break; 1244b88c807SRodney W. Grimes } 1254b88c807SRodney W. Grimes STPUTC(c, p); 1264b88c807SRodney W. Grimes } else if (ap[1] != NULL && strchr(ifs, c) != NULL) { 1274b88c807SRodney W. Grimes STACKSTRNUL(p); 1284b88c807SRodney W. Grimes setvar(*ap, stackblock(), 0); 1294b88c807SRodney W. Grimes ap++; 1304b88c807SRodney W. Grimes startword = 1; 1314b88c807SRodney W. Grimes STARTSTACKSTR(p); 1324b88c807SRodney W. Grimes } else { 1334b88c807SRodney W. Grimes STPUTC(c, p); 1344b88c807SRodney W. Grimes } 1354b88c807SRodney W. Grimes } 1364b88c807SRodney W. Grimes STACKSTRNUL(p); 1374b88c807SRodney W. Grimes setvar(*ap, stackblock(), 0); 1384b88c807SRodney W. Grimes while (*++ap != NULL) 1394b88c807SRodney W. Grimes setvar(*ap, nullstr, 0); 1404b88c807SRodney W. Grimes return status; 1414b88c807SRodney W. Grimes } 1424b88c807SRodney W. Grimes 1434b88c807SRodney W. Grimes 1444b88c807SRodney W. Grimes 1454b88c807SRodney W. Grimes umaskcmd(argc, argv) char **argv; { 1464b88c807SRodney W. Grimes int mask; 1474b88c807SRodney W. Grimes char *p; 1484b88c807SRodney W. Grimes int i; 1494b88c807SRodney W. Grimes 1504b88c807SRodney W. Grimes if ((p = argv[1]) == NULL) { 1514b88c807SRodney W. Grimes INTOFF; 1524b88c807SRodney W. Grimes mask = umask(0); 1534b88c807SRodney W. Grimes umask(mask); 1544b88c807SRodney W. Grimes INTON; 1554b88c807SRodney W. Grimes out1fmt("%.4o\n", mask); /* %#o might be better */ 1564b88c807SRodney W. Grimes } else { 1574b88c807SRodney W. Grimes mask = 0; 1584b88c807SRodney W. Grimes do { 1594b88c807SRodney W. Grimes if ((unsigned)(i = *p - '0') >= 8) 1604b88c807SRodney W. Grimes error("Illegal number: %s", argv[1]); 1614b88c807SRodney W. Grimes mask = (mask << 3) + i; 1624b88c807SRodney W. Grimes } while (*++p != '\0'); 1634b88c807SRodney W. Grimes umask(mask); 1644b88c807SRodney W. Grimes } 1654b88c807SRodney W. Grimes return 0; 1664b88c807SRodney W. Grimes } 167