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Diffstat (limited to 'newlib/libc/stdlib/setenv_r.c')
| -rw-r--r-- | newlib/libc/stdlib/setenv_r.c | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/newlib/libc/stdlib/setenv_r.c b/newlib/libc/stdlib/setenv_r.c deleted file mode 100644 index f06dc6772..000000000 --- a/newlib/libc/stdlib/setenv_r.c +++ /dev/null @@ -1,151 +0,0 @@ -/* 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 <reent.h> - -#include <stddef.h> -#include <stdlib.h> -#include <string.h> -#include <time.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_r is defined in getenv_r.c. */ -extern char *_findenv_r _PARAMS ((struct _reent *, const char *, int *)); - -/* - * _setenv_r -- - * Set the value of the environmental variable "name" to be - * "value". If rewrite is set, replace any current value. - */ - -int -_DEFUN (_setenv_r, (reent_ptr, name, value, rewrite), - struct _reent *reent_ptr _AND - _CONST char *name _AND - _CONST char *value _AND - int rewrite) -{ - static int alloced; /* if allocated space before */ - register char *C; - int l_value, offset; - - ENV_LOCK; - - if (*value == '=') /* no `=' in value */ - ++value; - l_value = strlen (value); - if ((C = _findenv_r (reent_ptr, name, &offset))) - { /* find if already exists */ - if (!rewrite) - { - ENV_UNLOCK; - return 0; - } - if (strlen (C) >= l_value) - { /* old larger; copy over */ - while ((*C++ = *value++) != 0); - ENV_UNLOCK; - /* if we are changing the TZ environment variable, update timezone info */ - if (strcmp (name, "TZ") == 0) - tzset (); - return 0; - } - } - else - { /* create new slot */ - register int cnt; - register char **P; - - for (P = *p_environ, cnt = 0; *P; ++P, ++cnt); - if (alloced) - { /* just increase size */ - *p_environ = (char **) _realloc_r (reent_ptr, (char *) environ, - (size_t) (sizeof (char *) * (cnt + 2))); - if (!*p_environ) - { - ENV_UNLOCK; - return -1; - } - } - else - { /* get new space */ - alloced = 1; /* copy old entries into it */ - P = (char **) _malloc_r (reent_ptr, (size_t) (sizeof (char *) * (cnt + 2))); - if (!P) - { - ENV_UNLOCK; - return (-1); - } - bcopy ((char *) *p_environ, (char *) P, cnt * sizeof (char *)); - *p_environ = P; - } - (*p_environ)[cnt + 1] = NULL; - offset = cnt; - } - for (C = (char *) name; *C && *C != '='; ++C); /* no `=' in name */ - if (!((*p_environ)[offset] = /* name + `=' + value */ - _malloc_r (reent_ptr, (size_t) ((int) (C - name) + l_value + 2)))) - { - ENV_UNLOCK; - return -1; - } - for (C = (*p_environ)[offset]; (*C = *name++) && *C != '='; ++C); - for (*C++ = '='; (*C++ = *value++) != 0;); - - ENV_UNLOCK; - - /* if we are setting the TZ environment variable, update timezone info */ - if (strcmp (name, "TZ") == 0) - tzset (); - - return 0; -} - -/* - * _unsetenv_r(name) -- - * Delete environmental variable "name". - */ -void -_DEFUN (_unsetenv_r, (reent_ptr, name), - struct _reent *reent_ptr _AND - _CONST char *name) -{ - register char **P; - int offset; - - ENV_LOCK; - - while (_findenv_r (reent_ptr, name, &offset)) /* if set multiple times */ - for (P = &(*p_environ)[offset];; ++P) - if (!(*P = *(P + 1))) - break; - - ENV_UNLOCK; -} |