/usr/include/newlib/envz.h is in libnewlib-dev 2.4.0.20160527-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | /* Copyright (C) 2002 by Red Hat, Incorporated. All rights reserved.
*
* Permission to use, copy, modify, and distribute this software
* is freely granted, provided that this notice is preserved.
*/
#include <errno.h>
#include <sys/types.h>
/* The newlib implementation of these functions assumes that sizeof(char) == 1. */
char * envz_entry (const char *envz, size_t envz_len, const char *name);
char * envz_get (const char *envz, size_t envz_len, const char *name);
error_t envz_add (char **envz, size_t *envz_len, const char *name, const char *value);
error_t envz_merge (char **envz, size_t *envz_len, const char *envz2, size_t envz2_len, int override);
void envz_remove(char **envz, size_t *envz_len, const char *name);
void envz_strip (char **envz, size_t *envz_len);
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