Openwall GNU/*/Linux - a small security-enhanced Linux distro for servers
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Date: Thu, 8 Aug 2019 11:34:09 -0400
From: Rich Felker <dalias@...c.org>
To: musl@...ts.openwall.com
Subject: Re: [PATCH] add secure_getenv function

On Tue, May 28, 2019 at 10:47:48PM +0200, Petr Vaněk wrote:
> This function is a GNU extension introduced in glibc 2.17.
> ---
>  include/stdlib.h        | 1 +
>  src/env/secure_getenv.c | 8 ++++++++
>  2 files changed, 9 insertions(+)
>  create mode 100644 src/env/secure_getenv.c
> 
> diff --git a/include/stdlib.h b/include/stdlib.h
> index 42ca8336..194c2033 100644
> --- a/include/stdlib.h
> +++ b/include/stdlib.h
> @@ -152,6 +152,7 @@ int ptsname_r(int, char *, size_t);
>  char *ecvt(double, int, int *, int *);
>  char *fcvt(double, int, int *, int *);
>  char *gcvt(double, int, char *);
> +char *secure_getenv(const char *);
>  struct __locale_struct;
>  float strtof_l(const char *__restrict, char **__restrict, struct __locale_struct *);
>  double strtod_l(const char *__restrict, char **__restrict, struct __locale_struct *);
> diff --git a/src/env/secure_getenv.c b/src/env/secure_getenv.c
> new file mode 100644
> index 00000000..72322f81
> --- /dev/null
> +++ b/src/env/secure_getenv.c
> @@ -0,0 +1,8 @@
> +#define _GNU_SOURCE
> +#include <stdlib.h>
> +#include "libc.h"
> +
> +char *secure_getenv(const char *name)
> +{
> +	return libc.secure ? NULL : getenv(name);
> +}
> -- 
> 2.21.0

Sorry I overlooked this at the time. Applying it now. Thanks!

Rich

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