11556Srgrimes/*- 21556Srgrimes * Copyright (c) 1991, 1993, 1994 31556Srgrimes * The Regents of the University of California. All rights reserved. 41556Srgrimes * 51556Srgrimes * This code is derived from software contributed to Berkeley by 61556Srgrimes * Keith Muller of the University of California, San Diego and Lance 71556Srgrimes * Visser of Convex Computer Corporation. 81556Srgrimes * 91556Srgrimes * Redistribution and use in source and binary forms, with or without 101556Srgrimes * modification, are permitted provided that the following conditions 111556Srgrimes * are met: 121556Srgrimes * 1. Redistributions of source code must retain the above copyright 131556Srgrimes * notice, this list of conditions and the following disclaimer. 141556Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 151556Srgrimes * notice, this list of conditions and the following disclaimer in the 161556Srgrimes * documentation and/or other materials provided with the distribution. 171556Srgrimes * 4. Neither the name of the University nor the names of its contributors 181556Srgrimes * may be used to endorse or promote products derived from this software 191556Srgrimes * without specific prior written permission. 201556Srgrimes * 211556Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221556Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231556Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241556Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251556Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261556Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271556Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281556Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291556Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301556Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311556Srgrimes * SUCH DAMAGE. 321556Srgrimes */ 331556Srgrimes 341556Srgrimes#ifndef lint 3535773Scharnier#if 0 3636007Scharnierstatic char sccsid[] = "@(#)args.c 8.3 (Berkeley) 4/2/94"; 3735773Scharnier#endif 381556Srgrimes#endif /* not lint */ 3999109Sobrien#include <sys/cdefs.h> 4099109Sobrien__FBSDID("$FreeBSD: stable/10/bin/dd/args.c 321140 2017-07-18 17:36:25Z ngie $"); 411556Srgrimes 421556Srgrimes#include <sys/types.h> 431556Srgrimes 441556Srgrimes#include <err.h> 451556Srgrimes#include <errno.h> 46111629Smarkm#include <inttypes.h> 471556Srgrimes#include <limits.h> 48250469Seadler#include <signal.h> 491556Srgrimes#include <stdlib.h> 501556Srgrimes#include <string.h> 511556Srgrimes 521556Srgrimes#include "dd.h" 531556Srgrimes#include "extern.h" 541556Srgrimes 5590108Simpstatic int c_arg(const void *, const void *); 5690108Simpstatic int c_conv(const void *, const void *); 5790108Simpstatic void f_bs(char *); 5890108Simpstatic void f_cbs(char *); 5990108Simpstatic void f_conv(char *); 6090108Simpstatic void f_count(char *); 6190108Simpstatic void f_files(char *); 62133762Srwatsonstatic void f_fillchar(char *); 6390108Simpstatic void f_ibs(char *); 6490108Simpstatic void f_if(char *); 6590108Simpstatic void f_obs(char *); 6690108Simpstatic void f_of(char *); 6790108Simpstatic void f_seek(char *); 6890108Simpstatic void f_skip(char *); 69264577Sdelphijstatic void f_status(char *); 70111629Smarkmstatic uintmax_t get_num(const char *); 7190108Simpstatic off_t get_off_t(const char *); 721556Srgrimes 7351208Sgreenstatic const struct arg { 7454245Sgreen const char *name; 7590108Simp void (*f)(char *); 761556Srgrimes u_int set, noset; 771556Srgrimes} args[] = { 781556Srgrimes { "bs", f_bs, C_BS, C_BS|C_IBS|C_OBS|C_OSYNC }, 791556Srgrimes { "cbs", f_cbs, C_CBS, C_CBS }, 801556Srgrimes { "conv", f_conv, 0, 0 }, 811556Srgrimes { "count", f_count, C_COUNT, C_COUNT }, 821556Srgrimes { "files", f_files, C_FILES, C_FILES }, 83133762Srwatson { "fillchar", f_fillchar, C_FILL, C_FILL }, 841556Srgrimes { "ibs", f_ibs, C_IBS, C_BS|C_IBS }, 851556Srgrimes { "if", f_if, C_IF, C_IF }, 8657523Sgreen { "iseek", f_skip, C_SKIP, C_SKIP }, 871556Srgrimes { "obs", f_obs, C_OBS, C_BS|C_OBS }, 881556Srgrimes { "of", f_of, C_OF, C_OF }, 8957523Sgreen { "oseek", f_seek, C_SEEK, C_SEEK }, 901556Srgrimes { "seek", f_seek, C_SEEK, C_SEEK }, 911556Srgrimes { "skip", f_skip, C_SKIP, C_SKIP }, 92264577Sdelphij { "status", f_status, C_STATUS,C_STATUS }, 931556Srgrimes}; 941556Srgrimes 951556Srgrimesstatic char *oper; 961556Srgrimes 971556Srgrimes/* 981556Srgrimes * args -- parse JCL syntax of dd. 991556Srgrimes */ 1001556Srgrimesvoid 10190108Simpjcl(char **argv) 1021556Srgrimes{ 1031556Srgrimes struct arg *ap, tmp; 1041556Srgrimes char *arg; 1051556Srgrimes 1061556Srgrimes in.dbsz = out.dbsz = 512; 1071556Srgrimes 10819720Sphk while ((oper = *++argv) != NULL) { 10930230Seivind if ((oper = strdup(oper)) == NULL) 11048051Sgreen errx(1, "unable to allocate space for the argument \"%s\"", *argv); 1111556Srgrimes if ((arg = strchr(oper, '=')) == NULL) 1121556Srgrimes errx(1, "unknown operand %s", oper); 1131556Srgrimes *arg++ = '\0'; 1141556Srgrimes if (!*arg) 1151556Srgrimes errx(1, "no value specified for %s", oper); 1161556Srgrimes tmp.name = oper; 11748051Sgreen if (!(ap = (struct arg *)bsearch(&tmp, args, 11848051Sgreen sizeof(args)/sizeof(struct arg), sizeof(struct arg), 11948051Sgreen c_arg))) 1201556Srgrimes errx(1, "unknown operand %s", tmp.name); 1211556Srgrimes if (ddflags & ap->noset) 12248051Sgreen errx(1, "%s: illegal argument combination or already set", 12348051Sgreen tmp.name); 1241556Srgrimes ddflags |= ap->set; 1251556Srgrimes ap->f(arg); 1261556Srgrimes } 1271556Srgrimes 1281556Srgrimes /* Final sanity checks. */ 1291556Srgrimes 1301556Srgrimes if (ddflags & C_BS) { 1311556Srgrimes /* 1321556Srgrimes * Bs is turned off by any conversion -- we assume the user 1331556Srgrimes * just wanted to set both the input and output block sizes 1341556Srgrimes * and didn't want the bs semantics, so we don't warn. 1351556Srgrimes */ 13662311Sgreen if (ddflags & (C_BLOCK | C_LCASE | C_SWAB | C_UCASE | 13762311Sgreen C_UNBLOCK)) 1381556Srgrimes ddflags &= ~C_BS; 1391556Srgrimes 1401556Srgrimes /* Bs supersedes ibs and obs. */ 14162311Sgreen if (ddflags & C_BS && ddflags & (C_IBS | C_OBS)) 1421556Srgrimes warnx("bs supersedes ibs and obs"); 1431556Srgrimes } 1441556Srgrimes 1451556Srgrimes /* 1461556Srgrimes * Ascii/ebcdic and cbs implies block/unblock. 1471556Srgrimes * Block/unblock requires cbs and vice-versa. 1481556Srgrimes */ 14951249Sgreen if (ddflags & (C_BLOCK | C_UNBLOCK)) { 1501556Srgrimes if (!(ddflags & C_CBS)) 1511556Srgrimes errx(1, "record operations require cbs"); 1521556Srgrimes if (cbsz == 0) 1531556Srgrimes errx(1, "cbs cannot be zero"); 1541556Srgrimes cfunc = ddflags & C_BLOCK ? block : unblock; 1551556Srgrimes } else if (ddflags & C_CBS) { 15651249Sgreen if (ddflags & (C_ASCII | C_EBCDIC)) { 1571556Srgrimes if (ddflags & C_ASCII) { 1581556Srgrimes ddflags |= C_UNBLOCK; 1591556Srgrimes cfunc = unblock; 1601556Srgrimes } else { 1611556Srgrimes ddflags |= C_BLOCK; 1621556Srgrimes cfunc = block; 1631556Srgrimes } 1641556Srgrimes } else 1651556Srgrimes errx(1, "cbs meaningless if not doing record operations"); 1661556Srgrimes } else 1671556Srgrimes cfunc = def; 1681556Srgrimes} 1691556Srgrimes 1701556Srgrimesstatic int 17190108Simpc_arg(const void *a, const void *b) 1721556Srgrimes{ 1731556Srgrimes 17454278Sgreen return (strcmp(((const struct arg *)a)->name, 17554278Sgreen ((const struct arg *)b)->name)); 1761556Srgrimes} 1771556Srgrimes 1781556Srgrimesstatic void 17990108Simpf_bs(char *arg) 1801556Srgrimes{ 181111629Smarkm uintmax_t res; 1821556Srgrimes 18351208Sgreen res = get_num(arg); 18451208Sgreen if (res < 1 || res > SSIZE_MAX) 185112265Sru errx(1, "bs must be between 1 and %jd", (intmax_t)SSIZE_MAX); 18651208Sgreen in.dbsz = out.dbsz = (size_t)res; 1871556Srgrimes} 1881556Srgrimes 1891556Srgrimesstatic void 19090108Simpf_cbs(char *arg) 1911556Srgrimes{ 192111629Smarkm uintmax_t res; 1931556Srgrimes 19451208Sgreen res = get_num(arg); 19551208Sgreen if (res < 1 || res > SSIZE_MAX) 196112265Sru errx(1, "cbs must be between 1 and %jd", (intmax_t)SSIZE_MAX); 19751208Sgreen cbsz = (size_t)res; 1981556Srgrimes} 1991556Srgrimes 2001556Srgrimesstatic void 20190108Simpf_count(char *arg) 2021556Srgrimes{ 203111629Smarkm intmax_t res; 2041556Srgrimes 205111629Smarkm res = (intmax_t)get_num(arg); 206111629Smarkm if (res < 0) 20751326Sgreen errx(1, "count cannot be negative"); 20889788Sgreen if (res == 0) 209111629Smarkm cpy_cnt = (uintmax_t)-1; 21089788Sgreen else 211111629Smarkm cpy_cnt = (uintmax_t)res; 2121556Srgrimes} 2131556Srgrimes 2141556Srgrimesstatic void 21590108Simpf_files(char *arg) 2161556Srgrimes{ 2171556Srgrimes 21851137Sgreen files_cnt = get_num(arg); 21951249Sgreen if (files_cnt < 1) 220111629Smarkm errx(1, "files must be between 1 and %jd", (uintmax_t)-1); 2211556Srgrimes} 2221556Srgrimes 2231556Srgrimesstatic void 224133762Srwatsonf_fillchar(char *arg) 225133762Srwatson{ 226133762Srwatson 227133762Srwatson if (strlen(arg) != 1) 228133762Srwatson errx(1, "need exactly one fill char"); 229133762Srwatson 230133762Srwatson fill_char = arg[0]; 231133762Srwatson} 232133762Srwatson 233133762Srwatsonstatic void 23490108Simpf_ibs(char *arg) 2351556Srgrimes{ 236111629Smarkm uintmax_t res; 2371556Srgrimes 23848051Sgreen if (!(ddflags & C_BS)) { 23951208Sgreen res = get_num(arg); 24051208Sgreen if (res < 1 || res > SSIZE_MAX) 241112265Sru errx(1, "ibs must be between 1 and %jd", 242112265Sru (intmax_t)SSIZE_MAX); 24351249Sgreen in.dbsz = (size_t)res; 24448051Sgreen } 2451556Srgrimes} 2461556Srgrimes 2471556Srgrimesstatic void 24890108Simpf_if(char *arg) 2491556Srgrimes{ 2501556Srgrimes 2511556Srgrimes in.name = arg; 2521556Srgrimes} 2531556Srgrimes 2541556Srgrimesstatic void 25590108Simpf_obs(char *arg) 2561556Srgrimes{ 257111629Smarkm uintmax_t res; 2581556Srgrimes 25948051Sgreen if (!(ddflags & C_BS)) { 26051208Sgreen res = get_num(arg); 26151208Sgreen if (res < 1 || res > SSIZE_MAX) 262112265Sru errx(1, "obs must be between 1 and %jd", 263112265Sru (intmax_t)SSIZE_MAX); 26451208Sgreen out.dbsz = (size_t)res; 26548051Sgreen } 2661556Srgrimes} 2671556Srgrimes 2681556Srgrimesstatic void 26990108Simpf_of(char *arg) 2701556Srgrimes{ 2711556Srgrimes 2721556Srgrimes out.name = arg; 2731556Srgrimes} 2741556Srgrimes 2751556Srgrimesstatic void 27690108Simpf_seek(char *arg) 2771556Srgrimes{ 2781556Srgrimes 27989788Sgreen out.offset = get_off_t(arg); 2801556Srgrimes} 2811556Srgrimes 2821556Srgrimesstatic void 28390108Simpf_skip(char *arg) 2841556Srgrimes{ 2851556Srgrimes 28689788Sgreen in.offset = get_off_t(arg); 2871556Srgrimes} 2881556Srgrimes 289264577Sdelphijstatic void 290264577Sdelphijf_status(char *arg) 291264577Sdelphij{ 292264577Sdelphij 293264577Sdelphij if (strcmp(arg, "none") == 0) 294264577Sdelphij ddflags |= C_NOINFO; 295264577Sdelphij else if (strcmp(arg, "noxfer") == 0) 296264577Sdelphij ddflags |= C_NOXFER; 297264577Sdelphij else 298264577Sdelphij errx(1, "unknown status %s", arg); 299264577Sdelphij} 300264577Sdelphij 30151208Sgreenstatic const struct conv { 30254245Sgreen const char *name; 3031556Srgrimes u_int set, noset; 30451208Sgreen const u_char *ctab; 3051556Srgrimes} clist[] = { 3061556Srgrimes { "ascii", C_ASCII, C_EBCDIC, e2a_POSIX }, 3071556Srgrimes { "block", C_BLOCK, C_UNBLOCK, NULL }, 3081556Srgrimes { "ebcdic", C_EBCDIC, C_ASCII, a2e_POSIX }, 3091556Srgrimes { "ibm", C_EBCDIC, C_ASCII, a2ibm_POSIX }, 3101556Srgrimes { "lcase", C_LCASE, C_UCASE, NULL }, 3111556Srgrimes { "noerror", C_NOERROR, 0, NULL }, 3121556Srgrimes { "notrunc", C_NOTRUNC, 0, NULL }, 3131556Srgrimes { "oldascii", C_ASCII, C_EBCDIC, e2a_32V }, 3141556Srgrimes { "oldebcdic", C_EBCDIC, C_ASCII, a2e_32V }, 3151556Srgrimes { "oldibm", C_EBCDIC, C_ASCII, a2ibm_32V }, 31631120Sjoerg { "osync", C_OSYNC, C_BS, NULL }, 317126667Sphk { "pareven", C_PAREVEN, C_PARODD|C_PARSET|C_PARNONE, NULL}, 318126667Sphk { "parnone", C_PARNONE, C_PARODD|C_PARSET|C_PAREVEN, NULL}, 319126667Sphk { "parodd", C_PARODD, C_PAREVEN|C_PARSET|C_PARNONE, NULL}, 320126667Sphk { "parset", C_PARSET, C_PARODD|C_PAREVEN|C_PARNONE, NULL}, 32130312Sjoerg { "sparse", C_SPARSE, 0, NULL }, 3221556Srgrimes { "swab", C_SWAB, 0, NULL }, 3231556Srgrimes { "sync", C_SYNC, 0, NULL }, 3241556Srgrimes { "ucase", C_UCASE, C_LCASE, NULL }, 3251556Srgrimes { "unblock", C_UNBLOCK, C_BLOCK, NULL }, 3261556Srgrimes}; 3271556Srgrimes 3281556Srgrimesstatic void 32990108Simpf_conv(char *arg) 3301556Srgrimes{ 3311556Srgrimes struct conv *cp, tmp; 3321556Srgrimes 3331556Srgrimes while (arg != NULL) { 3341556Srgrimes tmp.name = strsep(&arg, ","); 33551208Sgreen cp = bsearch(&tmp, clist, sizeof(clist) / sizeof(struct conv), 33651208Sgreen sizeof(struct conv), c_conv); 33751208Sgreen if (cp == NULL) 3381556Srgrimes errx(1, "unknown conversion %s", tmp.name); 3391556Srgrimes if (ddflags & cp->noset) 3401556Srgrimes errx(1, "%s: illegal conversion combination", tmp.name); 3411556Srgrimes ddflags |= cp->set; 3421556Srgrimes if (cp->ctab) 3431556Srgrimes ctab = cp->ctab; 3441556Srgrimes } 3451556Srgrimes} 3461556Srgrimes 3471556Srgrimesstatic int 34890108Simpc_conv(const void *a, const void *b) 3491556Srgrimes{ 3501556Srgrimes 35154278Sgreen return (strcmp(((const struct conv *)a)->name, 35254278Sgreen ((const struct conv *)b)->name)); 3531556Srgrimes} 3541556Srgrimes 3551556Srgrimes/* 356111629Smarkm * Convert an expression of the following forms to a uintmax_t. 3571556Srgrimes * 1) A positive decimal number. 358132933Spjd * 2) A positive decimal number followed by a 'b' or 'B' (mult by 512). 359132933Spjd * 3) A positive decimal number followed by a 'k' or 'K' (mult by 1 << 10). 360132933Spjd * 4) A positive decimal number followed by a 'm' or 'M' (mult by 1 << 20). 361132933Spjd * 5) A positive decimal number followed by a 'g' or 'G' (mult by 1 << 30). 362132933Spjd * 5) A positive decimal number followed by a 'w' or 'W' (mult by sizeof int). 363132933Spjd * 6) Two or more positive decimal numbers (with/without [BbKkMmGgWw]) 364132933Spjd * separated by 'x' or 'X' (also '*' for backwards compatibility), 365132933Spjd * specifying the product of the indicated values. 3661556Srgrimes */ 367111629Smarkmstatic uintmax_t 36890108Simpget_num(const char *val) 3691556Srgrimes{ 370111629Smarkm uintmax_t num, mult, prevnum; 3711556Srgrimes char *expr; 3721556Srgrimes 37348051Sgreen errno = 0; 37489788Sgreen num = strtouq(val, &expr, 0); 37551208Sgreen if (errno != 0) /* Overflow or underflow. */ 37648051Sgreen err(1, "%s", oper); 37748051Sgreen 37851208Sgreen if (expr == val) /* No valid digits. */ 3791556Srgrimes errx(1, "%s: illegal numeric value", oper); 3801556Srgrimes 38189788Sgreen mult = 0; 38251137Sgreen switch (*expr) { 383132933Spjd case 'B': 3841556Srgrimes case 'b': 38589788Sgreen mult = 512; 3861556Srgrimes break; 387132933Spjd case 'K': 3881556Srgrimes case 'k': 38989788Sgreen mult = 1 << 10; 3901556Srgrimes break; 391132933Spjd case 'M': 3921556Srgrimes case 'm': 39389788Sgreen mult = 1 << 20; 3941556Srgrimes break; 395132933Spjd case 'G': 39648051Sgreen case 'g': 39789788Sgreen mult = 1 << 30; 39848051Sgreen break; 399132933Spjd case 'W': 4001556Srgrimes case 'w': 40189788Sgreen mult = sizeof(int); 4021556Srgrimes break; 40391079Smarkm default: 40496383Sjedgar ; 4051556Srgrimes } 4061556Srgrimes 40789788Sgreen if (mult != 0) { 40889788Sgreen prevnum = num; 40989788Sgreen num *= mult; 41089788Sgreen /* Check for overflow. */ 41189788Sgreen if (num / mult != prevnum) 41289788Sgreen goto erange; 41389788Sgreen expr++; 41489788Sgreen } 41589788Sgreen 41651137Sgreen switch (*expr) { 4171556Srgrimes case '\0': 4181556Srgrimes break; 4191556Srgrimes case '*': /* Backward compatible. */ 420132933Spjd case 'X': 4211556Srgrimes case 'x': 42289788Sgreen mult = get_num(expr + 1); 42389788Sgreen prevnum = num; 42489788Sgreen num *= mult; 42589788Sgreen if (num / mult == prevnum) 42651137Sgreen break; 42751137Sgreenerange: 42851137Sgreen errx(1, "%s: %s", oper, strerror(ERANGE)); 4291556Srgrimes default: 4301556Srgrimes errx(1, "%s: illegal numeric value", oper); 4311556Srgrimes } 4321556Srgrimes return (num); 4331556Srgrimes} 43451208Sgreen 43589788Sgreen/* 43689788Sgreen * Convert an expression of the following forms to an off_t. This is the 43789788Sgreen * same as get_num(), but it uses signed numbers. 43889788Sgreen * 439111629Smarkm * The major problem here is that an off_t may not necessarily be a intmax_t. 44089788Sgreen */ 44151208Sgreenstatic off_t 44290108Simpget_off_t(const char *val) 44351208Sgreen{ 444111629Smarkm intmax_t num, mult, prevnum; 44589788Sgreen char *expr; 44651208Sgreen 44789788Sgreen errno = 0; 44889788Sgreen num = strtoq(val, &expr, 0); 44989788Sgreen if (errno != 0) /* Overflow or underflow. */ 45089788Sgreen err(1, "%s", oper); 45189788Sgreen 45289788Sgreen if (expr == val) /* No valid digits. */ 45389788Sgreen errx(1, "%s: illegal numeric value", oper); 45489788Sgreen 45589788Sgreen mult = 0; 45689788Sgreen switch (*expr) { 457132933Spjd case 'B': 45889788Sgreen case 'b': 45989788Sgreen mult = 512; 46089788Sgreen break; 461132933Spjd case 'K': 46289788Sgreen case 'k': 46389788Sgreen mult = 1 << 10; 46489788Sgreen break; 465132933Spjd case 'M': 46689788Sgreen case 'm': 46789788Sgreen mult = 1 << 20; 46889788Sgreen break; 469132933Spjd case 'G': 47089788Sgreen case 'g': 47189788Sgreen mult = 1 << 30; 47289788Sgreen break; 473132933Spjd case 'W': 47489788Sgreen case 'w': 47589788Sgreen mult = sizeof(int); 47689788Sgreen break; 47789788Sgreen } 47889788Sgreen 47989788Sgreen if (mult != 0) { 48089788Sgreen prevnum = num; 48189788Sgreen num *= mult; 48289788Sgreen /* Check for overflow. */ 48389788Sgreen if ((prevnum > 0) != (num > 0) || num / mult != prevnum) 48489788Sgreen goto erange; 48589788Sgreen expr++; 48689788Sgreen } 48789788Sgreen 48889788Sgreen switch (*expr) { 48989788Sgreen case '\0': 49089788Sgreen break; 49189788Sgreen case '*': /* Backward compatible. */ 492132933Spjd case 'X': 49389788Sgreen case 'x': 494111629Smarkm mult = (intmax_t)get_off_t(expr + 1); 49589788Sgreen prevnum = num; 49689788Sgreen num *= mult; 49790331Sgreen if ((prevnum > 0) == (num > 0) && num / mult == prevnum) 49889788Sgreen break; 49989788Sgreenerange: 50089788Sgreen errx(1, "%s: %s", oper, strerror(ERANGE)); 50189788Sgreen default: 50289788Sgreen errx(1, "%s: illegal numeric value", oper); 50389788Sgreen } 50489788Sgreen return (num); 50551208Sgreen} 506