/* getenv.c for uClibc * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> * * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. */ #include <string.h> #include <unistd.h> #include <stdlib.h> libc_hidden_proto(getenv) /* Experimentally off - libc_hidden_proto(memcmp) */ /* Experimentally off - libc_hidden_proto(strlen) */ /* 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; } libc_hidden_def(getenv)
