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util: Add new function os_get_option_internal to improve os_get_option*

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This is for take care of GetEnvironmentVariableA/getenv/secure_getenv/os_get_android_option
consistently across windows/posix/android

And also secure_getenv should not directly used in mesa, remove it from u_debug.h

os_get_option_secure is using getenv for windows before, that also pull the drawback of getenv, so convert it also
using GetEnvironmentVariableA on windows instead.

This is done the same as commit bed69133cd for os_get_option_secure

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Yiwei Zhang <zzyiwei@chromium.org>
Acked-by: Antonio Ospite <antonio.ospite@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38128>
This commit is contained in:
Yonggang Luo 2025-10-29 15:09:25 +08:00 • committed by Marge Bot
parent 95faaa4553
commit de36fed555
2 changed files with 23 additions and 21 deletions
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37
src/util/os_misc.c
View file

@ -200,20 +200,29 @@ os_get_android_option(const char *name)
* that have been made during the process lifetime, if either the
* setter uses a different CRT (e.g. due to static linking) or the
* setter used the Win32 API directly. */
const char *
os_get_option(const char *name)
static const char *
os_get_option_internal(const char *name, UNUSED bool use_secure_getenv)
{
static thread_local char value[_MAX_ENV];
DWORD size = GetEnvironmentVariableA(name, value, _MAX_ENV);
return (size > 0 && size < _MAX_ENV) ? value : NULL;
}
#else
#else /* !DETECT_OS_WINDOWS */
const char *
os_get_option(const char *name)
static const char *
os_get_option_internal(const char *name, bool use_secure_getenv)
{
const char *opt = getenv(name);
const char *opt;
if (use_secure_getenv) {
#ifdef HAVE_SECURE_GETENV
opt = secure_getenv(name);
#else
opt = getenv(name);
#endif
} else {
opt = getenv(name);
}
#if DETECT_OS_ANDROID
if (!opt) {
opt = os_get_android_option(name);
@ -222,18 +231,18 @@ os_get_option(const char *name)
return opt;
}
#endif
#endif /* DETECT_OS_WINDOWS */
const char *
os_get_option(const char *name)
{
return os_get_option_internal(name, false);
}
const char *
os_get_option_secure(const char *name)
{
const char *opt = secure_getenv(name);
#if DETECT_OS_ANDROID
if (!opt) {
opt = os_get_android_option(name);
}
#endif
return opt;
return os_get_option_internal(name, true);
}
static struct hash_table *options_tbl;

7
src/util/u_debug.h
View file

@ -409,13 +409,6 @@ __normal_user(void)
#endif
}
#ifndef HAVE_SECURE_GETENV
static inline char *secure_getenv(const char *name)
{
return getenv(name);
}
#endif
#define DEBUG_GET_ONCE_BOOL_OPTION(sufix, name, dfault) \
static bool \
debug_get_option_ ## sufix (void) \