1*10d63b7dSRichard Lowe /* 2*10d63b7dSRichard Lowe * CDDL HEADER START 3*10d63b7dSRichard Lowe * 4*10d63b7dSRichard Lowe * The contents of this file are subject to the terms of the 5*10d63b7dSRichard Lowe * Common Development and Distribution License (the "License"). 6*10d63b7dSRichard Lowe * You may not use this file except in compliance with the License. 7*10d63b7dSRichard Lowe * 8*10d63b7dSRichard Lowe * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9*10d63b7dSRichard Lowe * or http://www.opensolaris.org/os/licensing. 10*10d63b7dSRichard Lowe * See the License for the specific language governing permissions 11*10d63b7dSRichard Lowe * and limitations under the License. 12*10d63b7dSRichard Lowe * 13*10d63b7dSRichard Lowe * When distributing Covered Code, include this CDDL HEADER in each 14*10d63b7dSRichard Lowe * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15*10d63b7dSRichard Lowe * If applicable, add the following below this CDDL HEADER, with the 16*10d63b7dSRichard Lowe * fields enclosed by brackets "[]" replaced with your own identifying 17*10d63b7dSRichard Lowe * information: Portions Copyright [yyyy] [name of copyright owner] 18*10d63b7dSRichard Lowe * 19*10d63b7dSRichard Lowe * CDDL HEADER END 20*10d63b7dSRichard Lowe */ 21*10d63b7dSRichard Lowe /* 22*10d63b7dSRichard Lowe * Copyright 1994 Sun Microsystems, Inc. All rights reserved. 23*10d63b7dSRichard Lowe * Use is subject to license terms. 24*10d63b7dSRichard Lowe */ 25*10d63b7dSRichard Lowe 26*10d63b7dSRichard Lowe 27*10d63b7dSRichard Lowe #include <stdlib.h> 28*10d63b7dSRichard Lowe #include <string.h> 29*10d63b7dSRichard Lowe #include <unistd.h> 30*10d63b7dSRichard Lowe 31*10d63b7dSRichard Lowe extern char **environ; 32*10d63b7dSRichard Lowe 33*10d63b7dSRichard Lowe static short setenv_made_new_vector= 0; 34*10d63b7dSRichard Lowe 35*10d63b7dSRichard Lowe char *setenv(char *name, char *value) 36*10d63b7dSRichard Lowe { char *p= NULL, **q; 37*10d63b7dSRichard Lowe int length= 0, vl; 38*10d63b7dSRichard Lowe 39*10d63b7dSRichard Lowe if ((p= getenv(name)) == NULL) { /* Allocate new vector */ 40*10d63b7dSRichard Lowe for (q= environ; *q != NULL; q++, length++); 41*10d63b7dSRichard Lowe q= (char **)malloc((unsigned)(sizeof(char *)*(length+2))); 42*10d63b7dSRichard Lowe memcpy(((char *)q)+sizeof(char *), (char *)environ, sizeof(char *)*(length+1)); 43*10d63b7dSRichard Lowe if (setenv_made_new_vector++) 44*10d63b7dSRichard Lowe free((char *)environ); 45*10d63b7dSRichard Lowe length= strlen(name); 46*10d63b7dSRichard Lowe environ= q;} 47*10d63b7dSRichard Lowe else { /* Find old slot */ 48*10d63b7dSRichard Lowe length= strlen(name); 49*10d63b7dSRichard Lowe for (q= environ; *q != NULL; q++) 50*10d63b7dSRichard Lowe if (!strncmp(*q, name, length)) 51*10d63b7dSRichard Lowe break;}; 52*10d63b7dSRichard Lowe vl= strlen(value); 53*10d63b7dSRichard Lowe if (!p || (length+vl+1 > strlen(p))) 54*10d63b7dSRichard Lowe *q= p= (char *) malloc((unsigned)(length+vl+2)); 55*10d63b7dSRichard Lowe else 56*10d63b7dSRichard Lowe p= *q; 57*10d63b7dSRichard Lowe (void)strcpy(p, name); p+= length; 58*10d63b7dSRichard Lowe *p++= '='; 59*10d63b7dSRichard Lowe (void)strcpy(p, value); 60*10d63b7dSRichard Lowe return(value); 61*10d63b7dSRichard Lowe } 62