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From: Adhemerval Zanella <azanella@sourceware.org> To: glibc-cvs@sourceware.org Subject: [glibc/azanella/ld-audit-fixes] elf: Add _dl_audit_objclose Date: Tue, 16 Nov 2021 13:57:40 +0000 (GMT) [thread overview] Message-ID: <20211116135740.4FA65385AC3A@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=5af1aea0ae900a18449ba8f16eed464b57fb866c commit 5af1aea0ae900a18449ba8f16eed464b57fb866c Author: Adhemerval Zanella <adhemerval.zanella@linaro.org> 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. Diff: --- elf/dl-audit.c | 21 +++++++++++++++++++++ elf/dl-close.c | 20 +------------------- elf/dl-fini.c | 16 +--------------- sysdeps/generic/ldsodefs.h | 1 + 4 files changed, 24 insertions(+), 34 deletions(-) diff --git a/elf/dl-audit.c b/elf/dl-audit.c index de85ef1ddd..ef34ff761c 100644 --- a/elf/dl-audit.c +++ b/elf/dl-audit.c @@ -99,4 +99,25 @@ _dl_audit_objopen (struct link_map *l, Lmid_t nsid, bool check_audit) afct = afct->next; } } + +void +_dl_audit_objclose (struct link_map *l, Lmid_t nsid) +{ + 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; + } +} #endif diff --git a/elf/dl-close.c b/elf/dl-close.c index 79dbb41094..df4e948498 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, nsid); #endif /* This object must not be used anymore. */ diff --git a/elf/dl-fini.c b/elf/dl-fini.c index c683884c35..1720cfaeb8 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, ns); #endif } diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h index b1c76361d2..82dbc66d79 100644 --- a/sysdeps/generic/ldsodefs.h +++ b/sysdeps/generic/ldsodefs.h @@ -1405,6 +1405,7 @@ void _dl_audit_activity_nsid (Lmid_t nsid, int action); namespace identification NSID. If CHECK_AUDIT is set it will also check if main mapping of the namespace is a audit modules. */ void _dl_audit_objopen (struct link_map *l, Lmid_t nsid, bool check_audit); +void _dl_audit_objclose (struct link_map *l, Lmid_t nsid); #endif /* SHARED */ #if PTHREAD_IN_LIBC && defined SHARED
next reply other threads:[~2021-11-16 13:57 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-11-16 13:57 Adhemerval Zanella [this message] -- strict thread matches above, loose matches on Subject: below -- 2021-11-09 18:18 Adhemerval Zanella 2021-09-10 18:26 Adhemerval Zanella 2021-08-04 20:53 Adhemerval Zanella 2021-08-04 17:47 Adhemerval Zanella 2021-07-30 19:25 Adhemerval Zanella
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