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author | markm <markm@FreeBSD.org> | 2000-01-09 20:58:00 +0000 |
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committer | markm <markm@FreeBSD.org> | 2000-01-09 20:58:00 +0000 |
commit | 5f68254a360fdb4f3ebc30f6ad6507556425dd0a (patch) | |
tree | a96b9cd24173c10bba3fd7e2acf5d68e5bb0773e /crypto/heimdal/lib/roken/unsetenv.c | |
parent | d88c9767e1793993cc2242ccfb9a8ba002a061c6 (diff) | |
parent | 4ecbd6db44d79348bc815f31096e53104f50838b (diff) | |
download | FreeBSD-src-5f68254a360fdb4f3ebc30f6ad6507556425dd0a.zip FreeBSD-src-5f68254a360fdb4f3ebc30f6ad6507556425dd0a.tar.gz |
This commit was generated by cvs2svn to compensate for changes in r55682,
which included commits to RCS files with non-trunk default branches.
Diffstat (limited to 'crypto/heimdal/lib/roken/unsetenv.c')
-rw-r--r-- | crypto/heimdal/lib/roken/unsetenv.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/crypto/heimdal/lib/roken/unsetenv.c b/crypto/heimdal/lib/roken/unsetenv.c new file mode 100644 index 0000000..6d95a51 --- /dev/null +++ b/crypto/heimdal/lib/roken/unsetenv.c @@ -0,0 +1,70 @@ +/* + * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * 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 Institute 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 INSTITUTE 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 INSTITUTE 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. + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +RCSID("$Id: unsetenv.c,v 1.7 1999/12/02 16:58:53 joda Exp $"); +#endif + +#include <stdlib.h> +#include <string.h> + +#include "roken.h" + +extern char **environ; + +/* + * unsetenv -- + */ +void +unsetenv(const char *name) +{ + int len; + const char *np; + char **p; + + if (name == 0 || environ == 0) + return; + + for (np = name; *np && *np != '='; np++) + /* nop */; + len = np - name; + + for (p = environ; *p != 0; p++) + if (strncmp(*p, name, len) == 0 && (*p)[len] == '=') + break; + + for (; *p != 0; p++) + *p = *(p + 1); +} + |