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path: root/libc/misc/internals/__uClibc_main.c
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2019-04-14Fix TLS allocation and loading in !SHARED caseYann Sionneau
For ARCH where shared lib are not supported: - SHARED is not set (!SHARED is true) - __ARCH_HAS_NO_LDSO__ is set so code inside #if !defined __ARCH_HAS_NO_LDSO__ && !defined SHARED is compiled-out. But without a call do _dl_aux_init(), _dl_phdr stays NULL and __libc_setup_tls won't be able to allocate memory for the in-executable TLS and also won't be able to load the initimage from ELF TLS segment. This results in segfault when doing things like "errno = 0" like in tst-cancel15.c for instance in uClibc-ng testsuite. Signed-off-by: Yann Sionneau <ysionneau@kalray.eu>
2018-08-10nptl threads: Fix bug in using a weak variable.Christophe Lyon
In case __nptl_nthreads is not defined in the final binary then avoid dereferencing the address since it's null. Anyway this means there is no other thread and so we must exit. * libc/misc/internals/__uClibc_main.c (__uClibc_main): Handle case where &__nptl_nthreads is null. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2018-08-10Allow to generate PIE 'static' binaryChristophe Lyon
* libc/misc/internals/__uClibc_main.c (funcdesc_value): New. (fdpic_init_array_jump): New. (__uClibc_fini): Support __FDPIC__. (__uClibc_main): Likewise. Signed-off-by: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
2016-12-10threads: optimize single threaded applicationsWaldemar Brodkorb
Revert the removal of the weak pthread functions and guarantee a link order so that single threaded applications doesn't link in all the pthread functions they don't use. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Tested-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
2016-09-26use a single libc and deduplicate threading codeWaldemar Brodkorb
Similar to musl libc a single libc has many benefits and solves some open issues with uClibc-ng. - no pthread_mutex_* weak symbols exported anymore - applications no longer failing to link when either -lrt or -lpthread are missing for dynamic and static linking mode - smaller C library - slightly better runtime performance
2016-06-07ssp: remove SSP legacy codeWaldemar Brodkorb
Nobody should use gcc 3.3 nowadays.
2015-10-12fix static binaries linked with pthread and compiled with sspWaldemar Brodkorb
Move TLS initialization for static builds up to the calling function as suggested by Daniel Fahlgren. Reported-By: Daniel Fahlgren <daniel@fahlgren.se>
2014-08-18libc: add issetugid()Anthony G. Basile
issetugid() returns 1 if the process environment or memory address space is considered tainted, and returns 0 otherwise. This happens, for example, when a process's privileges are elevated by the setuid or setgid flags on an executable belonging to root. This function first appeard in OpenBSD 2.0 and is needed for the LibreSSL. This patch follows the same logic as the equivalent musl commit. For more information see the commit message at http://git.musl-libc.org/cgit/musl/commit/?id=ddddec106fd17c3aca3287005d21e92f742aa9d4 Signed-off-by: Anthony G. Basile <blueness@gentoo.org> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2013-05-13libc: deal with aux vect inside __uClibc_main only if !SHAREDFilippo ARCIDIACONO
It's not safe to use the aux vect inside __uClibc_main if we are running with shared libraries, because it could have been already modified. For example, if some constructor plays with environment variables by using unsetenv, the modifications done into the stack to unset an environment variable, have impacts on the aux vect due to the extra NULL entries added. Due to this, __uClibc_main is not able to detect where the aux vect starts, so all the entries that are used by __uClibc_main (AT_UID, AT_EUID, AT_GID, AT_EGID, AT_PAGESZ and possibly other arch specific) are impacted. Same side effect on the aux vect is caused by the ld.so when running a SUID program with some of the unsecure environment variables set, that will be unset by the ld.so itself. In order to fix this issue, it needs to handle aux vect entries into __uClibc_main only if SHARED is not defined. In SHARED case, libc refers to __dl_secure and _dl_pagesize as initialised by the ld.so where the aux vext is still untouched. Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com> Reviewed-by: Carmelo Amoroso <carmelo.amoroso@st.com> Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2012-10-31__uclibc_main: remove stray trailing spaceBernhard Reutner-Fischer
test post-receive hook Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15make UCLIBC_HAS_PROGRAM_INVOCATION_NAME and UCLIBC_HAS___PROGNAME ↵Peter S. Mazinger
independent options Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15__uClibc_main.c: do not include unused headersPeter S. Mazinger
Remove unneeded headers. Guard inclusion of fcntl.h. While there, remove an obsoleted comment. Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15errno and *_init cleanupPeter S. Mazinger
Define a common view of __errno_location, __h_errno_location in common header and use that everywhere, __uClibc_main.c is no special. The rule adopted: for enabled threads we make in libc the __GI_x() variants strong, x() weak and (should) provide another strong x() in libpthread. If threads are disabled, even the __GI_x() variants are weak. _stdio_init,_stdio_term,_locale_init: make all hidden weak in common header Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15__uClibc_main.c: make __uClibc_init hiddenPeter S. Mazinger
The linker can cope with it if it is hidden. No need for the __GI___uClibc_init. Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-06-15make __uClibc_fini() hiddenPeter S. Mazinger
No need for a visible version Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2012-05-18ldso: sh: handle _dl_skip_args in linker startup instead of __uClibc_mainFilippo Arcidiacono
Handle _dl_skip_args in the asm part of the dynamic linker startup, to skip the ldso arguments, so we can keep this symbol hidden as other archs do. Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com> Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2011-04-06Merge remote-tracking branch 'origin/master' into prelinkCarmelo Amoroso
* origin/master: (137 commits) utils/ldd: Check for returned pointer from strrchr not the value it holds cris: add provide arch-specific vfork implementation lutimes.c, stubs.c: fix compiling lutimes, if __NR_utimensat is not defined bump version to 0.9.32-rc3-git release 0.9.32-rc3 memalign: include sys/param.h for MAX arm/bits/atomic.h: Include common/bit/atomic.h for thumb1 wctype.h: fix libc_hidden_proto for iswupper and add it for iswspace add libc_hidden_proto for wcs[n]casecmp_l really fix missing __libc_drand48_data Revert "missing prototype of __libc_drand48_data fixed" missing prototype of __libc_drand48_data fixed time.c, time.h: remove unused hidden strftime/strptime nanosleep.c: remove duplicated libc_hidden_proto ctype.c, ctype.h: remove commented parts that were banned for removal after 0.9.31 _wctype.c, wctype.h: remove unused isw* and wctype_l hidden functions time.c, wchar.h: remove unused hidden wcsftime str[n]casecmp.c: fix hidden usage remove unused hidden functions frv/memset.S: add missing libc_hidden_def ... Conflicts: ldso/ldso/ldso.c Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2011-03-03Correct ssp codePeter S. Mazinger
Avoid using strong_alias in ssp, some archs dislike it. Make stack_chk_guard static. Export __stack_smash_handler only if compatibility option is enabled. Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
2011-03-03add missing prototypesPeter S. Mazinger
Add some missing prototypes Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
2010-09-17ldso: Add implementation of ld.so standalone executionFilippo Arcidiacono
The dynamic linker can be run either indirectly through running some dynamically linked program or library (in which case no command line options to the dynamic linker can be passed and, in the ELF case, the dynamic linker which is stored in the .interp section of the program is executed) or directly by running: /lib/ld-uClibc.so.* [OPTIONS] [PROGRAM [ARGUMENTS]] Stand-alone execution is a prerequisite for adding prelink capabilities to uClibc dynamic linker, as well useful for testing an updated version of the dynamic linker without breaking the whole system. Currently supported option: --library-path PATH use given PATH instead of content of the environment variable LD_LIBRARY_PATH (Mandatory for prelinking) Not supported options: --list list all dependencies and how they are resolved --verify verify that given object really is a dynamically linked object we can handle --inhibit-rpath LIST ignore RUNPATH and RPATH information in object names in LIST This feature can be enabled by setting LDSO_STANDALONE_SUPPORT=y Signed-off-by: Filippo Arcidiacono <filippo.arcidiacono@st.com> Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2010-06-30more workarounds for GCC PR32219Timo Teräs
Commit 2e53dd645d5348f207cec7f8595969dc566c5a55 workarounds GCC bug when accessing _locale_init and _stdio_init. We need the same fix for __errno_location and __h_errno_location otherwise we crash calling null with static and non-threaded builds. Signed-off-by: Timo Teräs <timo.teras@iki.fi> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2010-06-17libc: Fix non-NPTL threads buildCarmelo Amoroso
This patch fixes some issues building uclibc with linuxthreads, that seem to have been introduced by the NPTL changes. Signed-off-by: Andrew Stubbs <ams@codesourcery.com> Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2010-05-17static build: define pthreads wrappers only for threaded buildsTimo Teräs
Otherwise we get compiler errors due to undefined prototypes as noticed by Denys. Signed-off-by: Timo Teräs <timo.teras@iki.fi> Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
2010-05-17some (all?) archs don't define asm, so use builtin __asm__Austin Foxley
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
2010-05-17workaround GCC PR32219Denys Vlasenko
we ended up calling 0 Fixes bug #1033 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2010-05-07static build: fix internal locking weaks to get pulled in alwaysTimo Teras
Linker is smart and does not pull in weaks.os, ever. This happens because that compilation unit does not get strong references and ld eliminates dead code. We really need the weaks for static build in a compilation unit that is always there, otherwise it won't work. Signed-off-by: Timo Teras <timo.teras@iki.fi> Acked-by: Roman I Khimov <khimov@altell.ru> Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
2010-02-05Merge commit 'origin/master' into nptlAustin Foxley
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
2010-02-03__uClibc_main: use __pagesize to protect against recursionBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2010-01-25Merge branch 'master' into nptlCarmelo Amoroso
Conflicts: libc/inet/Makefile.in libc/inet/hostid.c Synchronise nptl branch with master branch @ c4b750195714ec7c10aa4de15610c5aae0751c1c Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2010-01-23silence some warnings about unused paramsBernhard Reutner-Fischer
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2009-11-27define local stack_chk_guard for nptlNatanael Copa
Signed-off-by: Natanael Copa <natanael.copa@gmail.com> Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
2009-10-17whitespace fixesAustin Foxley
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
2009-10-17uClibc_main: add the needed support for nptlAustin Foxley
* setup memory for the cancellation buffer * remove unneeded weak's * deallocation of tsd on main thread exit Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
2009-09-18convert // comments to /**/; remove empty #if/#endif pairs. no code changesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2009-09-18trim Experimentally off and uncommented hiddenBernhard Reutner-Fischer
sed -i -e '/Experimentally off - /d' $(grep -rl "Experimentally off - " *) sed -i -e '/^\/\*[[:space:]]*libc_hidden_proto(/d' $(grep -rl "libc_hidden_proto" *) should be a nop Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
2008-12-10*: remove some __libc_XXX functions:Denis Vlasenko
__libc_accept __libc_close __libc_connect __libc_creat __libc_creat64 __libc_fsync __libc_lseek __libc_lseek64 __libc_msync __libc_nanosleep __libc_open __libc_open64 __libc_pause __libc_read __libc_readv __libc_recv __libc_recvfrom __libc_recvmsg __libc_send __libc_sendmsg __libc_sendto __libc_tcdrain __libc_wait __libc_waitpid __libc_write __libc_writev They were removed from glibc 1 May 2004: http://sources.redhat.com/ml/libc-hacker/2004-05/msg00001.html
2008-12-10remove __libc_fcntl[64]Denis Vlasenko
2008-11-22fix some unneeded PLT referencesDenis Vlasenko
2008-11-20Last portion of libc_hidden_proto removal.Denis Vlasenko
Appears to build fine (several .configs tried)
2008-11-20next portion of libc_hidden_proto removalDenis Vlasenko
2008-11-18Move _dl_iterate_phdr into libc.so.0 and libc.a (as glibc does).Carmelo Amoroso
Currently we have an implementation in ld.so and libdl.a. Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>
2008-11-18libc_hidden_proto removal, just a few functionsDenis Vlasenko
2008-06-27if argv[0] is NULL, dont try to parse it and subsequently crash ... found by ↵Mike Frysinger
running execve05 ltp test on blackfin ([#4194])
2008-05-25__uClibc_main.c: save ~70 bytes by not checking that /dev/nullDenis Vlasenko
is indeed a char device with correct (maj,min). (If it's not such a char device, the system is screwed anyway, nothing can be done about it...) text data bss dec hex filename - 715 4 21 740 2e4 libc/misc/internals/__uClibc_main.o + 644 4 21 669 29d libc/misc/internals/__uClibc_main.o
2008-05-20Introduce and use small[u]int type. Changes in size:Denis Vlasenko
- 79 0 28 107 6b libc/inet/rpc/create_xid.o + 76 0 25 101 65 libc/inet/rpc/create_xid.o - 126 0 4 130 82 libc/misc/assert/__assert.o + 123 0 1 124 7c libc/misc/assert/__assert.o - 648 4 24 676 2a4 libc/misc/internals/__uClibc_main.o + 645 4 21 670 29e libc/misc/internals/__uClibc_main.o - 230 0 4 234 ea libc/stdlib/abort.o + 216 0 1 217 d9 libc/stdlib/abort.o - 129 0 4 133 85 libc/termios/tcgetsid.o + 126 0 1 127 7f libc/termios/tcgetsid.o
2008-05-19Moving libc_hidden_proto's into #ifdef UCLIBC_INTERNAL blockDenis Vlasenko
in string.h and strings.h. This caught unguarded string ops in libc/inet/ethers.c __ether_line_w() function. I will wait for fallout reports for a week or so, then continue converting more libc_hidden_proto's.
2007-09-15bug 1310: drop hidden aliases to data since some arches crap with this due ↵Mike Frysinger
to copy relocs
2007-06-01change the auxvt code from being dependent on MMU to !LDSO as auxvt things ↵Mike Frysinger
are ELF-specific, not MMU-specific
2007-01-11Peter Mazinger pointed out that my last commit was faulty.Joakim Tjernlund
This should fix it.
2007-01-10Fix SEGV for static builds in exit() path.Joakim Tjernlund
Leave the now obsolete libc/misc/pthread dir in for now.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 06:13:23 +0000