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Add a configure option --enable-force-getenv.

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Allows the use of getenv() rather than secure_getenv() to read MALLOC_CONF.
This helps in situations where hosts are under full control, and setting
MALLOC_CONF is needed while also setuid.  Disabled by default.
This commit is contained in:
Qi Wang 2022-11-02 16:09:06 -07:00 • committed by Qi Wang
parent 143e9c4a2f
commit 481bbfc990
3 changed files with 32 additions and 6 deletions
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16
src/jemalloc.c
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@ -703,16 +703,20 @@ check_entry_exit_locking(tsdn_t *tsdn) {
*/
static char *
jemalloc_secure_getenv(const char *name) {
#ifdef JEMALLOC_HAVE_SECURE_GETENV
return secure_getenv(name);
jemalloc_getenv(const char *name) {
#ifdef JEMALLOC_FORCE_GETENV
return getenv(name);
#else
# ifdef JEMALLOC_HAVE_ISSETUGID
# ifdef JEMALLOC_HAVE_SECURE_GETENV
return secure_getenv(name);
# else
# ifdef JEMALLOC_HAVE_ISSETUGID
if (issetugid() != 0) {
return NULL;
}
# endif
# endif
return getenv(name);
# endif
#endif
}
@ -1045,7 +1049,7 @@ obtain_malloc_conf(unsigned which_source, char buf[PATH_MAX + 1]) {
#endif
;
if ((ret = jemalloc_secure_getenv(envname)) != NULL) {
if ((ret = jemalloc_getenv(envname)) != NULL) {
/*
* Do nothing; opts is already initialized to the value
* of the MALLOC_CONF environment variable.