commit 198660741b23ec9defb19e22951d4a721de603c8 Author: Adhemerval Zanella Date: Tue Jul 20 14:04:51 2021 -0300 elf: Add _dl_audit_objclose It consolidates the code required to call la_objclose audit callback. Checked on x86_64-linux-gnu, i686-linux-gnu, and aarch64-linux-gnu. Reviewed-by: Florian Weimer (cherry picked from commit 311c9ee54ea963ff69bd3a2e6981c37e893b4c3e) diff --git a/elf/dl-audit.c b/elf/dl-audit.c index 5682427220569d90..cb1c3de93cba447b 100644 --- a/elf/dl-audit.c +++ b/elf/dl-audit.c @@ -85,3 +85,24 @@ _dl_audit_objopen (struct link_map *l, Lmid_t nsid) afct = afct->next; } } + +void +_dl_audit_objclose (struct link_map *l) +{ + if (__glibc_likely (GLRO(dl_naudit) == 0) + || GL(dl_ns)[l->l_ns]._ns_loaded->l_auditing) + return; + + struct audit_ifaces *afct = GLRO(dl_audit); + for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt) + { + if (afct->objclose != NULL) + { + struct auditstate *state= link_map_audit_state (l, cnt); + /* Return value is ignored. */ + afct->objclose (&state->cookie); + } + + afct = afct->next; + } +} diff --git a/elf/dl-close.c b/elf/dl-close.c index 5a8cc9e7cb5186cc..985cd4e2821436af 100644 --- a/elf/dl-close.c +++ b/elf/dl-close.c @@ -260,9 +260,6 @@ _dl_close_worker (struct link_map *map, bool force) _dl_sort_maps (maps, nloaded, (nsid == LM_ID_BASE), true); /* Call all termination functions at once. */ -#ifdef SHARED - bool do_audit = GLRO(dl_naudit) > 0 && !ns->_ns_loaded->l_auditing; -#endif bool unload_any = false; bool scope_mem_left = false; unsigned int unload_global = 0; @@ -296,22 +293,7 @@ _dl_close_worker (struct link_map *map, bool force) #ifdef SHARED /* Auditing checkpoint: we remove an object. */ - if (__glibc_unlikely (do_audit)) - { - struct audit_ifaces *afct = GLRO(dl_audit); - for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt) - { - if (afct->objclose != NULL) - { - struct auditstate *state - = link_map_audit_state (imap, cnt); - /* Return value is ignored. */ - (void) afct->objclose (&state->cookie); - } - - afct = afct->next; - } - } + _dl_audit_objclose (imap); #endif /* This object must not be used anymore. */ diff --git a/elf/dl-fini.c b/elf/dl-fini.c index c683884c355dfd52..b789cfb9f2ac6c85 100644 --- a/elf/dl-fini.c +++ b/elf/dl-fini.c @@ -146,21 +146,7 @@ _dl_fini (void) #ifdef SHARED /* Auditing checkpoint: another object closed. */ - if (!do_audit && __builtin_expect (GLRO(dl_naudit) > 0, 0)) - { - struct audit_ifaces *afct = GLRO(dl_audit); - for (unsigned int cnt = 0; cnt < GLRO(dl_naudit); ++cnt) - { - if (afct->objclose != NULL) - { - struct auditstate *state - = link_map_audit_state (l, cnt); - /* Return value is ignored. */ - (void) afct->objclose (&state->cookie); - } - afct = afct->next; - } - } + _dl_audit_objclose (l); #endif } diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h index 1f212a18d7bfc440..982f23c0287955fe 100644 --- a/sysdeps/generic/ldsodefs.h +++ b/sysdeps/generic/ldsodefs.h @@ -1394,6 +1394,10 @@ void _dl_audit_activity_nsid (Lmid_t nsid, int action) namespace identification NSID. */ void _dl_audit_objopen (struct link_map *l, Lmid_t nsid) attribute_hidden; + +/* Call the la_objclose from the audit modules for the link_map L. */ +void _dl_audit_objclose (struct link_map *l) + attribute_hidden; #endif /* SHARED */ #if PTHREAD_IN_LIBC && defined SHARED