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* ld.so: Examine GLRO to detect inactive loader [BZ #20204]Florian Weimer2017-12-181-1/+2
| | | | | | | | | | | | GLRO (_rtld_global_ro) is read-only after initialization and can therefore not be patched at run time, unlike the hook table addresses and their contents, so this is a desirable hardening feature. The hooks are only needed if ld.so has not been initialized, and this happens only after static dlopen (dlmopen uses a single ld.so object across all namespaces). Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* Update copyright dates with scripts/update-copyrights.Joseph Myers2017-01-011-1/+1
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* Update copyright dates with scripts/update-copyrights.Joseph Myers2016-01-041-1/+1
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* Update copyright dates with scripts/update-copyrights.Joseph Myers2015-01-021-1/+1
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* Remove IS_IN_libdlSiddhesh Poyarekar2014-11-241-1/+1
| | | | | | | | | | | | | | Replace with IS_IN (libdl). No changes to generated code on x86_64. * dlfcn/dladdr.c: Use IS_IN. * dlfcn/dladdr1.c: Likewise. * dlfcn/dlclose.c: Likewise. * dlfcn/dlerror.c: Likewise. * dlfcn/dlinfo.c: Likewise. * dlfcn/dlmopen.c: Likewise. * dlfcn/dlopen.c: Likewise. * dlfcn/dlsym.c: Likewise. * dlfcn/dlvsym.c: Likewise.
* Use glibc_likely instead __builtin_expect.Ondřej Bílka2014-02-101-1/+1
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* Update copyright notices with scripts/update-copyrightsAllan McRae2014-01-011-1/+1
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* Update copyright notices with scripts/update-copyrights.Joseph Myers2013-01-021-1/+1
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* Replace FSF snail mail address with URLs.Paul Eggert2012-02-091-3/+2
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* Update. cvs/fedora-glibc-20041018T2320Ulrich Drepper2004-10-181-1/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2004-10-18 Jakub Jelinek <jakub@redhat.com> * elf/dl-libc.c (__libc_dlsym_private, __libc_register_dl_open_hook): New functions. (__libc_dlopen_mode): Call __libc_register_dl_open_hook and __libc_register_dlfcn_hook. * dlfcn/Makefile (routines, elide-routines.os): Set. Add rules to build and test tststatic2. * dlfcn/tststatic2.c: New test. * dlfcn/modstatic2.c: New test module. * dlfcn/dladdr.c: Call _dlfcn_hook from libdl.so if not NULL. Define __ prefixed routine in libc.a and in libdl.a just call it. * dlfcn/dladdr1.c: Likewise. * dlfcn/dlclose.c: Likewise. * dlfcn/dlerror.c: Likewise. * dlfcn/dlinfo.c: Likewise. * dlfcn/dlmopen.c: Likewise. * dlfcn/dlopen.c: Likewise. * dlfcn/dlopenold.c: Likewise. * dlfcn/dlsym.c: Likewise. * dlfcn/dlvsym.c: Likewise. * dlfcn/sdladdr.c: New file. * dlfcn/sdladdr1.c: New file. * dlfcn/sdlclose.c: New file. * dlfcn/sdlerror.c: New file. * dlfcn/sdlinfo.c: New file. * dlfcn/sdlopen.c: New file. * dlfcn/sdlsym.c: New file. * dlfcn/sdlvsym.c: New file. * dlfcn/Versions (libdl): Export _dlfcn_hook@GLIBC_PRIVATE. * include/dlfcn.h (DL_CALLER_DECL, DL_CALLER RETURN_ADDRESS): Define. (struct dlfcn_hook): New type. (_dlfcn_hook): New extern decl. (__dlopen, __dlclose, __dlsym, __dlerror, __dladdr, __dladdr1, __dlinfo, __dlmopen, __libc_dlsym_private, __libc_register_dl_open_hook, __libc_register_dlfcn_hook): New prototypes. (__dlvsym): Use DL_CALLER_DECL. * include/libc-symbols.h: Define libdl_hidden_proto and friends. * malloc/arena.c (_dl_open_hook): Extern decl. (ptmalloc_init): Don't call _dl_addr when dlopened from statically linked programs but don't use brk for them either.
* 2003-03-10 Roland McGrath <roland@redhat.com>Roland McGrath2003-03-101-0/+35
* dlfcn/Makefile (libdl-routines): Add dladdr1. * dlfcn/dladdr1.c: New file. * dlfcn/dlfcn.h [__USE_GNU]: Declare dladdr1. [__USE_GNU] (RTLD_DL_SYMENT, RTLD_DL_LINKMAP): New enum constants. * elf/dl-addr.c (_dl_addr): Take new args, a struct link_map ** and a const ElfNN_Sym ** to fill in. * include/dlfcn.h: Update decl. Include <link.h>. * dlfcn/dladdr.c (dladdr): Update caller. * malloc/mtrace.c (tr_where): Likewise. * sysdeps/generic/elf/backtracesyms.c: Likewise. * sysdeps/generic/elf/backtracesymsfd.c: Likewise. * dlfcn/Versions (libdl: GLIBC_2.3.3): New set, add dladdr1. * Versions.def (libdl): Define GLIBC_2.3.3 set.