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author | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 18:28:13 -0800 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 18:28:13 -0800 |
commit | 1767f908af327fa388b1c66883760ad851267013 (patch) | |
tree | 4b825dc642cb6eb9a060e54bf8d69288fbee4904 /libc/stdlib/setenv.c | |
parent | a799b53f10e5a6fd51fef4436cfb7ec99836a516 (diff) | |
download | bionic-1767f908af327fa388b1c66883760ad851267013.zip bionic-1767f908af327fa388b1c66883760ad851267013.tar.gz bionic-1767f908af327fa388b1c66883760ad851267013.tar.bz2 |
auto import from //depot/cupcake/@135843
Diffstat (limited to 'libc/stdlib/setenv.c')
-rw-r--r-- | libc/stdlib/setenv.c | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/libc/stdlib/setenv.c b/libc/stdlib/setenv.c deleted file mode 100644 index 856db5e..0000000 --- a/libc/stdlib/setenv.c +++ /dev/null @@ -1,105 +0,0 @@ -/* $OpenBSD: setenv.c,v 1.9 2005/08/08 08:05:37 espie Exp $ */ -/* - * Copyright (c) 1987 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 <stdlib.h> -#include <string.h> - -char *__findenv(const char *name, int *offset); - -extern char **environ; - -/* - * setenv -- - * Set the value of the environmental variable "name" to be - * "value". If rewrite is set, replace any current value. - */ -int -setenv(const char *name, const char *value, int rewrite) -{ - static char **lastenv; /* last value of environ */ - char *C; - int l_value, offset; - - if (*value == '=') /* no `=' in value */ - ++value; - l_value = strlen(value); - if ((C = __findenv(name, &offset))) { /* find if already exists */ - if (!rewrite) - return (0); - if ((int)strlen(C) >= l_value) { /* old larger; copy over */ - while ((*C++ = *value++)) - ; - return (0); - } - } else { /* create new slot */ - size_t cnt; - char **P; - - for (P = environ; *P != NULL; P++) - ; - cnt = P - environ; - P = (char **)realloc(lastenv, sizeof(char *) * (cnt + 2)); - if (!P) - return (-1); - if (lastenv != environ) - memcpy(P, environ, cnt * sizeof(char *)); - lastenv = environ = P; - offset = cnt; - environ[cnt + 1] = NULL; - } - for (C = (char *)name; *C && *C != '='; ++C) - ; /* no `=' in name */ - if (!(environ[offset] = /* name + `=' + value */ - malloc((size_t)((int)(C - name) + l_value + 2)))) - return (-1); - for (C = environ[offset]; (*C = *name++) && *C != '='; ++C) - ; - for (*C++ = '='; (*C++ = *value++); ) - ; - return (0); -} - -/* - * unsetenv(name) -- - * Delete environmental variable "name". - */ -int -unsetenv(const char *name) -{ - char **P; - int offset; - - while (__findenv(name, &offset)) /* if set multiple times */ - for (P = &environ[offset];; ++P) - if (!(*P = *(P + 1))) - break; - - return 0; -} |