diff options
| -rw-r--r-- | ChangeLog | 11 | ||||
| -rw-r--r-- | elf/Makefile | 9 | ||||
| -rw-r--r-- | elf/rtld.c | 30 | ||||
| -rw-r--r-- | elf/tst-audit13.c | 28 | ||||
| -rw-r--r-- | elf/tst-audit13mod1.c | 93 |
5 files changed, 164 insertions, 7 deletions
@@ -1,3 +1,14 @@ +2019-01-24 Adhemerval Zanella <adhemerval.zanella@linaro.org> + + [BZ #24122] + * elf/Makefile (tests): Add tst-audit13. + (modules-names): Add tst-audit13mod1. + (tst-audit13.out, LDFLAGS-tst-audit13mod1.so, tst-audit13-ENV): New + rule. + * elf/rtld.c (dl_main): Handle invalid audit module version. + * elf/tst-audit13.c: New file. + * elf/tst-audit13mod1.c: Likewise. + 2019-01-22 Samuel Thibault <samuel.thibault@ens-lyon.org> * sysdeps/mach/hurd/faccessat.c (__faccessat_common): Check for errors diff --git a/elf/Makefile b/elf/Makefile index 9cf5cd8..c24d765 100644 --- a/elf/Makefile +++ b/elf/Makefile @@ -187,7 +187,7 @@ tests += restest1 preloadtest loadfail multiload origtest resolvfail \ tst-nodelete2 tst-audit11 tst-audit12 tst-dlsym-error tst-noload \ tst-latepthread tst-tls-manydynamic tst-nodelete-dlclose \ tst-debug1 tst-main1 tst-absolute-sym tst-absolute-zero tst-big-note \ - tst-unwind-ctor tst-unwind-main + tst-unwind-ctor tst-unwind-main tst-audit13 # reldep9 tests-internal += loadtest unload unload2 circleload1 \ neededtest neededtest2 neededtest3 neededtest4 \ @@ -275,7 +275,8 @@ modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \ tst-latepthreadmod $(tst-tls-many-dynamic-modules) \ tst-nodelete-dlclose-dso tst-nodelete-dlclose-plugin \ tst-main1mod tst-libc_dlvsym-dso tst-absolute-sym-lib \ - tst-absolute-zero-lib tst-big-note-lib tst-unwind-ctor-lib + tst-absolute-zero-lib tst-big-note-lib tst-unwind-ctor-lib \ + tst-audit13mod1 # Most modules build with _ISOMAC defined, but those filtered out # depend on internal headers. modules-names-tests = $(filter-out ifuncmod% tst-libc_dlvsym-dso tst-tlsmod%,\ @@ -1382,6 +1383,10 @@ tst-audit12-ENV = LD_AUDIT=$(objpfx)tst-auditmod12.so $(objpfx)tst-audit12mod1.so: $(objpfx)tst-audit12mod2.so LDFLAGS-tst-audit12mod2.so = -Wl,--version-script=tst-audit12mod2.map +$(objpfx)tst-audit13.out: $(objpfx)tst-audit13mod1.so +LDFLAGS-tst-audit13mod1.so = -Wl,-z,lazy +tst-audit13-ENV = LD_AUDIT=$(objpfx)tst-audit13mod1.so + # Override -z defs, so that we can reference an undefined symbol. # Force lazy binding for the same reason. LDFLAGS-tst-latepthreadmod.so = \ @@ -1453,10 +1453,12 @@ ERROR: ld.so: object '%s' cannot be loaded as audit interface: %s; ignored.\n", unsigned int (*laversion) (unsigned int); unsigned int lav; - if (err_str == NULL - && (laversion = largs.result) != NULL - && (lav = laversion (LAV_CURRENT)) > 0 - && lav <= LAV_CURRENT) + if (err_str != NULL) + goto not_loaded; + + if ((laversion = largs.result) != NULL + && (lav = laversion (LAV_CURRENT)) > 0 + && lav <= LAV_CURRENT) { /* Allocate structure for the callback function pointers. This call can never fail. */ @@ -1538,7 +1540,25 @@ ERROR: ld.so: object '%s' cannot be loaded as audit interface: %s; ignored.\n", assert (GL(dl_ns)[ns]._ns_nloaded == 0); GL(dl_tls_max_dtv_idx) = tls_idx; - goto not_loaded; + if (GLRO(dl_debug_mask) & DL_DEBUG_FILES) + { + _dl_debug_printf ("\ +\nfile=%s cannot be loaded as audit interface; ignored.\n", name); + if (laversion == NULL) + _dl_debug_printf ( +" la_version function not found.\n"); + else + { + if (lav == 0) + _dl_debug_printf ( +" auditor requested to be ignored (returned version of 0).\n"); + else + _dl_debug_printf ( +" auditor disabled since expected version %d is greater than " +"supported version %d.\n", + lav, LAV_CURRENT); + } + } } } } diff --git a/elf/tst-audit13.c b/elf/tst-audit13.c new file mode 100644 index 0000000..6f587ba --- /dev/null +++ b/elf/tst-audit13.c @@ -0,0 +1,28 @@ +/* Check for invalid audit version (BZ#24122). + Copyright (C) 2019 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <stdio.h> + +static int +do_test (void) +{ + puts ("plt call"); + return 0; +} + +#include <support/test-driver.c> diff --git a/elf/tst-audit13mod1.c b/elf/tst-audit13mod1.c new file mode 100644 index 0000000..cf017e2 --- /dev/null +++ b/elf/tst-audit13mod1.c @@ -0,0 +1,93 @@ +/* Check for invalid audit version (BZ#24122). + Copyright (C) 2019 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <link.h> +#include <stdlib.h> + +unsigned int +la_version (unsigned int version) +{ + /* The audit specification says that a version of 0 or a version + greater than any version supported by the dynamic loader shall + cause the module to be ignored. */ + return 0; +} + +void +la_activity (uintptr_t *cookie, unsigned int flag) +{ + exit (EXIT_FAILURE); +} + +char * +la_objsearch (const char *name, uintptr_t *cookie, unsigned int flag) +{ + exit (EXIT_FAILURE); +} + +unsigned int +la_objopen (struct link_map *map, Lmid_t lmid, uintptr_t * cookie) +{ + exit (EXIT_FAILURE); +} + +void +la_preinit (uintptr_t * cookie) +{ + exit (EXIT_FAILURE); +} + +uintptr_t +#if __ELF_NATIVE_CLASS == 32 +la_symbind32 (Elf32_Sym *sym, unsigned int ndx, uintptr_t *refcook, + uintptr_t *defcook, unsigned int *flags, const char *symname) +#else +la_symbind64 (Elf64_Sym *sym, unsigned int ndx, uintptr_t *refcook, + uintptr_t *defcook, unsigned int *flags, const char *symname) +#endif +{ + exit (EXIT_FAILURE); +} + +unsigned int +la_objclose (uintptr_t * cookie) +{ + exit (EXIT_FAILURE); +} + +#include <tst-audit.h> +#if (!defined (pltenter) || !defined (pltexit) || !defined (La_regs) \ + || !defined (La_retval) || !defined (int_retval)) +# error "architecture specific code needed in sysdeps/CPU/tst-audit.h" +#endif + +ElfW(Addr) +pltenter (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook, + uintptr_t *defcook, La_regs *regs, unsigned int *flags, + const char *symname, long int *framesizep) +{ + exit (EXIT_FAILURE); +} + +unsigned int +pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook, + uintptr_t *defcook, const La_regs *inregs, La_retval *outregs, + const char *symname) +{ + exit (EXIT_FAILURE); +} |