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elf: Add comments on how LD_AUDIT and LD_PRELOAD handle __libc_enable_secure

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To make explicit why __libc_enable_secure is not checked.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
This commit is contained in:
Adhemerval Zanella 2023-11-06 17:25:50 -03:00
parent 5451fa962c
commit 780c339202
1 changed files with 8 additions and 1 deletions
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9
elf/rtld.c
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@ -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];