From 9a1a89e45461cb586f4aaf9a2e3585d870f189e3 Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Wed, 7 Aug 2002 13:13:40 +0000 Subject: Changed my mind. Keep this separate. -Erik --- libc/stdlib/getenv.c | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 libc/stdlib/getenv.c (limited to 'libc/stdlib/getenv.c') diff --git a/libc/stdlib/getenv.c b/libc/stdlib/getenv.c new file mode 100644 index 000000000..2daf03955 --- /dev/null +++ b/libc/stdlib/getenv.c @@ -0,0 +1,41 @@ +/* getenv.c for uClibc + Erik Andersen + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. + */ + +#include +#include + +/* IEEE Std 1003.1-2001 says getenv need not be thread safe, so + * don't bother locking access to __environ */ +char *getenv(const char *var) +{ + int len; + char **ep; + + if (!(ep=__environ)) + return NULL; + len = strlen(var); + while(*ep) { + if (memcmp(var, *ep, len) == 0 && (*ep)[len] == '=') { + return *ep + len + 1; + } + ep++; + } + return NULL; +} + -- cgit v1.2.3