/* getenv.c for uClibc
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/* getenv.c for uClibc
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Erik Andersen <andersen@codepoet.org>
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Erik Andersen <andersen@codepoet.org>
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The GNU C Library is free software; you can redistribute it and/or
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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02111-1307 USA.
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*/
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*/
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#include <string.h>
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#include <string.h>
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#include <unistd.h>
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#include <unistd.h>
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/* IEEE Std 1003.1-2001 says getenv need not be thread safe, so
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/* IEEE Std 1003.1-2001 says getenv need not be thread safe, so
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* don't bother locking access to __environ */
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* don't bother locking access to __environ */
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char *getenv(const char *var)
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char *getenv(const char *var)
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{
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{
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int len;
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int len;
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char **ep;
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char **ep;
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if (!(ep=__environ))
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if (!(ep=__environ))
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return NULL;
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return NULL;
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len = strlen(var);
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len = strlen(var);
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while(*ep) {
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while(*ep) {
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if (memcmp(var, *ep, len) == 0 && (*ep)[len] == '=') {
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if (memcmp(var, *ep, len) == 0 && (*ep)[len] == '=') {
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return *ep + len + 1;
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return *ep + len + 1;
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}
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}
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ep++;
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ep++;
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}
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}
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return NULL;
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return NULL;
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}
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}
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