From 780c33920281c5d5cc42a1e578bdc9218e675405 Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Mon, 6 Nov 2023 17:25:50 -0300 Subject: elf: Add comments on how LD_AUDIT and LD_PRELOAD handle __libc_enable_secure To make explicit why __libc_enable_secure is not checked. Reviewed-by: Siddhesh Poyarekar --- elf/rtld.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'elf') diff --git a/elf/rtld.c b/elf/rtld.c index 7d4c843e7e..0553c05edb 100644 --- a/elf/rtld.c +++ b/elf/rtld.c @@ -2561,6 +2561,10 @@ process_envvars (struct dl_main_state *state) process_dl_debug (state, &envline[6]); break; } + /* For __libc_enable_secure mode, audit pathnames containing slashes + are ignored. Also, shared audit objects are only loaded only from + the standard search directories and only if they have set-user-ID + mode bit enabled. */ if (memcmp (envline, "AUDIT", 5) == 0) audit_list_add_string (&state->audit_list, &envline[6]); break; @@ -2573,7 +2577,10 @@ process_envvars (struct dl_main_state *state) break; } - /* List of objects to be preloaded. */ + /* For __libc_enable_secure mode, preload pathnames containing slashes + are ignored. Also, shared objects are only preloaded from the + standard search directories and only if they have set-user-ID mode + bit enabled. */ if (memcmp (envline, "PRELOAD", 7) == 0) { state->preloadlist = &envline[8]; -- cgit 1.4.1