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| author |  Craig Tiller <ctiller@google.com> | 2016-02-01 14:10:27 -0800 |
|---|---|---|
| committer | Craig Tiller <ctiller@google.com> | 2016-02-01 14:10:27 -0800 |
| commit | b941095f28d13288100dae54e14925ae41fd987c (patch) | |
| tree | 2ad3064c43c4524b4efb32d387bd685b76c40d32 /src/core/support/env_linux.c | |
| parent | 9828aade971a152fe8cfb43d8bfeab311de03845 (diff) | |
Comments
Diffstat (limited to 'src/core/support/env_linux.c')
| -rw-r--r-- | src/core/support/env_linux.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/core/support/env_linux.c b/src/core/support/env_linux.c index 183bcd2bd0..7bfd8415f8 100644 --- a/src/core/support/env_linux.c +++ b/src/core/support/env_linux.c @@ -49,11 +49,19 @@ #include "src/core/support/string.h" +/* Declare weak symbols for versions of secure_getenv that *may* be + * on a users machine. Older libc's call this __secure_getenv, even + * older don't support the functionality. + * + * If a symbol is not present, these will be equal to NULL. + */ char *__attribute__((weak)) secure_getenv(const char *name); char *__attribute__((weak)) __secure_getenv(const char *name); char *gpr_getenv(const char *name) { static char *(*getenv_func)(const char *) = secure_getenv; + /* Check to see which getenv variant is supported (go from most + * to least secure */ if (getenv_func == NULL) { getenv_func = __secure_getenv; if (getenv_func == NULL) { |