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Diffstat (limited to 'newlib/libc/stdlib/getenv_r.c')
-rw-r--r-- | newlib/libc/stdlib/getenv_r.c | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/newlib/libc/stdlib/getenv_r.c b/newlib/libc/stdlib/getenv_r.c deleted file mode 100644 index 4d567c718..000000000 --- a/newlib/libc/stdlib/getenv_r.c +++ /dev/null @@ -1,133 +0,0 @@ -/* -FUNCTION -<<_getenv_r>>---look up environment variable - -INDEX - _getenv_r -INDEX - environ - -ANSI_SYNOPSIS - #include <stdlib.h> - char *_getenv_r(struct _reent *<[reent_ptr]>, const char *<[name]>); - -TRAD_SYNOPSIS - #include <stdlib.h> - char *_getenv_r(<[reent_ptr]>, <[name]>) - struct _reent *<[reent_ptr]>; - char *<[name]>; - -DESCRIPTION -<<_getenv_r>> searches the list of environment variable names and values -(using the global pointer ``<<char **environ>>'') for a variable whose -name matches the string at <[name]>. If a variable name matches, -<<_getenv_r>> returns a pointer to the associated value. - -RETURNS -A pointer to the (string) value of the environment variable, or -<<NULL>> if there is no such environment variable. - -PORTABILITY -<<_getenv_r>> is not ANSI; the rules for properly forming names of environment -variables vary from one system to another. - -<<_getenv_r>> requires a global pointer <<environ>>. -*/ - -/* This file may have been modified by DJ Delorie (Jan 1991). If so, -** these modifications are Copyright (C) 1991 DJ Delorie -*/ - -/* - * Copyright (c) 1987 Regents of the University of California. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that: (1) source distributions retain this entire copyright - * notice and comment, and (2) distributions including binaries display - * the following acknowledgement: ``This product includes software - * developed by the University of California, Berkeley and its contributors'' - * in the documentation or other materials provided with the distribution - * and in all advertising materials mentioning features or use of this - * software. 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#include <stdlib.h> -#include <stddef.h> -#include <string.h> -#include "envlock.h" - -extern char **environ; - -/* Only deal with a pointer to environ, to work around subtle bugs with shared - libraries and/or small data systems where the user declares his own - 'environ'. */ -static char ***p_environ = &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 * -_DEFUN (_findenv_r, (reent_ptr, name, offset), - struct _reent *reent_ptr _AND - register _CONST char *name _AND - int *offset) -{ - register int len; - register char **p; - _CONST char *c; - - ENV_LOCK; - - /* In some embedded systems, this does not get set. This protects - newlib from dereferencing a bad pointer. */ - if (!*p_environ) - return NULL; - - c = name; - len = 0; - while (*c && *c != '=') - { - c++; - len++; - } - - for (p = *p_environ; *p; ++p) - if (!strncmp (*p, name, len)) - if (*(c = *p + len) == '=') - { - *offset = p - *p_environ; - ENV_UNLOCK; - return (char *) (++c); - } - ENV_UNLOCK; - return NULL; -} - -/* - * _getenv_r -- - * Returns ptr to value associated with name, if any, else NULL. - */ - -char * -_DEFUN (_getenv_r, (reent_ptr, name), - struct _reent *reent_ptr _AND - _CONST char *name) -{ - int offset; - char *_findenv_r (); - - return _findenv_r (reent_ptr, name, &offset); -} |