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Diffstat (limited to 'pkgtools/libnbcompat/files/findenv.c')
| -rw-r--r-- | pkgtools/libnbcompat/files/findenv.c | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/pkgtools/libnbcompat/files/findenv.c b/pkgtools/libnbcompat/files/findenv.c new file mode 100644 index 00000000000..8c17a2ecc82 --- /dev/null +++ b/pkgtools/libnbcompat/files/findenv.c @@ -0,0 +1,88 @@ +/* $NetBSD: findenv.c,v 1.1 2004/08/23 03:32:12 jlam Exp $ */ + +/* + * Copyright (c) 1987, 1993 + * The 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 <nbcompat.h> +#include <nbcompat/cdefs.h> +#if defined(LIBC_SCCS) && !defined(lint) +#if 0 +static char sccsid[] = "@(#)getenv.c 8.1 (Berkeley) 6/4/93"; +#else +__RCSID("$NetBSD: findenv.c,v 1.1 2004/08/23 03:32:12 jlam Exp $"); +#endif +#endif /* LIBC_SCCS and not lint */ + +#if HAVE_ERRNO_H +#include <errno.h> +#endif +#include <nbcompat/stdlib.h> +#include <nbcompat/string.h> +#if 0 +#include "local.h" +#include "reentrant.h" +#endif + +#if 0 +#ifdef _REENTRANT +rwlock_t __environ_lock = RWLOCK_INITIALIZER; +#endif +#endif +extern char **environ; + +/* + * __findenv -- + * Returns pointer to value associated with name, if any, else NULL. + * Sets offset to be the offset of the name/value combination in the + * environmental array, for use by setenv(3) and unsetenv(3). + * Explicitly removes '=' in argument name. + * + * This routine *should* be a static; don't use it. + */ +char * +__findenv(name, offset) + const char *name; + int *offset; +{ + size_t len; + const char *np; + char **p, *c; + + if (name == NULL || environ == NULL) + return (NULL); + for (np = name; *np && *np != '='; ++np) + continue; + len = np - name; + for (p = environ; (c = *p) != NULL; ++p) + if (strncmp(c, name, len) == 0 && c[len] == '=') { + *offset = p - environ; + return (c + len + 1); + } + return (NULL); +} |