glibc

Commit Graph

Author	SHA1	Message	Date
Carlos O'Donell	92954ffa5a	localedef: Add verbose messages for failure paths. During testing of localedef running in a minimal container there were several error cases which were hard to diagnose since they appeared as strerror (errno) values printed by the higher level functions. This change adds three new verbose messages for potential failure paths. The new messages give the user the opportunity to use -v and display additional information about why localedef might be failing. I found these messages useful myself while writing a localedef container test for --no-hard-links. Since the changes cleanup the code that handle codeset normalization we add tst-localedef-path-norm which contains many sub-tests to verify the correct expected normalization of codeset strings both when installing to default paths (the only time normalization is enabled) and installing to absolute paths. During the refactoring I created at least one buffer-overflow which valgrind caught, but these tests did not catch because the exec in the container had a very clean heap with zero-initialized memory. However, between valgrind and the tests the results are clean. The new tst-localedef-path-norm passes without regression on x86_64. Change-Id: I28b9f680711ff00252a2cb15625b774cc58ecb9d	6 years ago
Joseph Myers	8d9ffbb9d0	Remove most gmp-mparam.h headers. Most gmp-mparam.h headers in glibc define various macros to the same values they would be defined to by the generic version of that header, plus macros IEEE_DOUBLE_BIG_ENDIAN or IEEE_DOUBLE_MIXED_ENDIAN related to the representation of double. The latter macros are in turn only used in gmp-impl.h to define union ieee_double_extract, which is not used in glibc. Thus all of these headers, except for the generic one and those that define _LONG_LONG_LIMB for ILP32 configurations with 64-bit registers, are redundant, and this patch removes them. Tested with build-many-glibcs.py that installed stripped shared libraries are unchanged by this patch.	6 years ago
Florian Weimer	ec935dea63	elf: Implement __libc_early_init This function is defined in libc.so, and the dynamic loader calls right after relocation has been finished, before any ELF constructors or the preinit function is invoked. It is also used in the static build for initializing parts of the static libc. To locate __libc_early_init, a direct symbol lookup function is used, _dl_lookup_direct. It does not search the entire symbol scope and consults merely a single link map. This function could also be used to implement lookups in the vDSO (as an optimization). A per-namespace variable (libc_map) is added for locating libc.so, to avoid repeated traversals of the search scope. It is similar to GL(dl_initfirst). An alternative would have been to thread a context argument from _dl_open down to _dl_map_object_from_fd (where libc.so is identified). This could have avoided the global variable, but the change would be larger as a result. It would not have been possible to use this to replace GL(dl_initfirst) because that global variable is used to pass the function pointer past the stack switch from dl_main to the main program. Replacing that requires adding a new argument to _dl_init, which in turn needs changes to the architecture-specific libc.so startup code written in assembler. __libc_early_init should not be used to replace _dl_var_init (as it exists today on some architectures). Instead, _dl_lookup_direct should be used to look up a new variable symbol in libc.so, and that should then be initialized from the dynamic loader, immediately after the object has been loaded in _dl_map_object_from_fd (before relocation is run). This way, more IFUNC resolvers which depend on these variables will work. Reviewed-by: Carlos O'Donell <carlos@redhat.com>	6 years ago
Florian Weimer	50a2d83c08	elf: Introduce <elf_machine_sym_no_match.h> MIPS needs to ignore certain existing symbols during symbol lookup. The old scheme uses the ELF_MACHINE_SYM_NO_MATCH macro, with an inline function, within its own header, with a sysdeps override for MIPS. This allows re-use of the function from another file (without having to include <dl-machine.h> or providing the default definition for ELF_MACHINE_SYM_NO_MATCH). Reviewed-by: Carlos O'Donell <carlos@redhat.com>	6 years ago
H.J. Lu	781dacc4f4	Add a syscall test for [BZ #25810 ] Add a test to pass 64-bit long arguments to syscall with undefined upper 32 bits on x32. Tested on i386, x86-64 and x32 as well as with build-many-glibcs.py.	6 years ago
Fangrui Song	eb06601bb4	elf: Support lld-style link map for librtld.map GNU ld and gold's -Map include a line like: path/to/build/libc_pic.a(check_fds.os) lld -Map does not have the archive member list, but we can still derive the members from the following output VMA LMA Size Align Out In Symbol ... 1a1c0 1a1c0 e2 16 path/to/build/libc_pic.a(check_fds.os):(.text)	6 years ago
Adhemerval Zanella	566e10aa72	signal: Only handle on NSIG signals on signal functions (BZ #25657 ) The upper bits of the sigset_t s not fully initialized in the signal mask calls that return information from kernel (sigprocmask, sigpending, and pthread_sigmask), since the exported sigset_t size (1024 bits) is larger than Linux support one (64 or 128 bits). It might make sigisemptyset/sigorset/sigandset fail if the mask is filled prior the call. This patch changes the internal signal function to handle up to supported Linux signal number (_NSIG), the remaining bits are untouched. Checked on x86_64-linux-gnu and i686-linux-gnu.	6 years ago
Adhemerval Zanella	2f6fa80147	linux: Use pthread_sigmask on sigprocmask With pthread_sigmask on libc.so, it allows implement sigprocmask on top of pthread_sigmask. Checked on x86_64-linux-gnu.	6 years ago
Adhemerval Zanella	34d49f120d	ia64: Remove sigprocmask/sigblock objects from libpthread It is required because __libc_unwind_longjmp (used on thread cancellation) calls __sigprocmask. Replace with a direct call. They are required because __libc_unwind_longjmp (used for thread cancellation) calls __sigprocmask. Replace this with a direct call. The sigblock function is not exported and is not used internally, so it can be removed. Checked on cross build for ia64-linux-gnu.	6 years ago
Adhemerval Zanella	c6663fee43	nptl: Move pthread_sigmask implementation to libc This is part of the libpthread removal project: <https://sourceware.org/ml/libc-alpha/2019-10/msg00080.html> A new symbol version is added on libc to force loading failure instead of lazy binding one for newly binaries with old loaders. Checked with a build against all affected ABIs.	6 years ago
Mike FABIAN	8645f62469	Bug 25819: Update to Unicode 13.0.0 Unicode 13.0.0 Support: Character encoding, character type info, and transliteration tables are all updated to Unicode 13.0.0, using the generator scripts contributed by Mike FABIAN (Red Hat). Total added characters in newly generated CHARMAP: 5930 Total added characters in newly generated WIDTH: 5536	6 years ago
Vineet Gupta	0798b8ecc8	ARC: Update syscall-names.list for ARC specific syscalls	6 years ago
Adhemerval Zanella	f721171632	Revert "x86_64: Add SSE sfp-exceptions" The __sfp_handle_exceptions is not fully correct regarding raising exceptions, since there is no direct way to raise only FP_EX_OVERFLOW nor FP_EX_UNDERFLOW for SSE mode. Both libgcc and feraiseexcept rely on x87 mode to accomplish it. This reverts commit `460ee50de0`. Checked on x86_64.	6 years ago
Vineet Gupta	019d828669	provide y2038 safe socket constants for default/asm-generic ABI These will be used by upcoming RV32 and ARC ports and any future ports. Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>	6 years ago
Adhemerval Zanella	460ee50de0	x86_64: Add SSE sfp-exceptions The exported x86_64 fenv.h functions operate on both i387 and SSE (since they should work on both float, double, and long double) while the internal libc_fe* set either SSE (float, double, and float128) or i387 (long double). The libgcc __sfp_handle_exceptions (used on float128 implementation), however, will set either SEE or i387 exception depending of the exception to raise. This broke the internal assumption of float128 where only SSE operations will be used. This patch reimplements the libgcc __sfp_handle_exceptions to use only SSE operations and sets libgcc to use it instead of its own implementation. And I think we should fix libgcc in a similar manner, since checking on config/i386/64/sfp-machine.h it already only supports SSE rounding mode and x86_64 ABI also expectes float128 to use SSE registers [1] (although it is not clear on how future implementation might implement it). Checked on x86_64-linux-gnu. [1] https://github.com/hjl-tools/x86-psABI/wiki/X86-psABI	6 years ago
Adhemerval Zanella	c10dde0d2a	Remove __NO_MATH_INLINES With fenvinline.h removal the flag is not used anymore. Checked on x86_64-linux-gnu.	6 years ago
Adhemerval Zanella	4b850b1f29	i686: Add INTERNAL_SYSCALL_NCS 6 argument support It is required for i686 BZ#12683 support when building with -Os or -fno-omit-frame-pointer on some gcc versions. It is not used on current code. Check on i686-linux-gnu.	6 years ago
Carlos O'Donell	c580e6466d	Reset converter state after second wchar_t output (Bug 25734) An input BIG5-HKSCS character may be converted into at most 2 wchar_t characters. After outputting the second whcar_t character (which was saved in the converter state) we must reset the state. If we fail to reset the state we will be stuck continually copying that character to the output even if we have further input to consider. We add a new test case that covers the 4 BIG5-HKSCS characters that may become 2 wchar_t characters. Reviewed-by: Tom Honermann <tom@honermann.net>	6 years ago
Carlos O'Donell	70dfcd9b6c	Fix typo in posix/tst-fnmatch.input (Bug 25790) Reported-by: Michael Builov <mbuilov@gmail.com>	6 years ago
Florian Weimer	076f09afba	Linux: Remove <sys/sysctl.h> and the sysctl function Linux 5.5 remove the system call in commit 61a47c1ad3a4dc6882f01ebdc88138ac62d0df03 ("Linux: Remove <sys/sysctl.h>"). Therefore, the compat function is just a stub that sets ENOSYS. Due to SHLIB_COMPAT, new ports will not add the sysctl function anymore automatically. x32 already lacks the sysctl function, so an empty sysctl.c file is used to suppress it. Otherwise, a new compat symbol would be added. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>	6 years ago
Alistair Francis	c4d4419433	posix: Add wait4 test case Add a wait4 test case based on the waitid test case.	6 years ago
Alistair Francis	00515ea3a1	linux: wait4: Fix incorrect return value comparison Patch `600f00b` "linux: Use long time_t for wait4/getrusage" introduced two bugs: - The usage32 struct was set if the wait4 syscall had an error. - For 32-bit systems the usage struct was set even if it was specified as NULL. This patch fixes the two issues.	6 years ago
Samuel Thibault	2102bec982	hurd: add mach_print function * mach/Versions (GLIBC_2.32): Add mach_print. * sysdeps/mach/hurd/i386/libc.abilist (GLIBC_2.32): Add mach_print.	6 years ago
H.J. Lu	df76ff3a44	x32: Properly pass long to syscall [BZ #25810 ] X32 has 32-bit long and pointer with 64-bit off_t. Since x32 psABI requires that pointers passed in registers must be zero-extended to 64bit, x32 can share many syscall interfaces with LP64. When a LP64 syscall with long and unsigned long arguments is used for x32, these arguments must be properly extended to 64-bit. Otherwise if the upper 32 bits of the register have undefined value, such a syscall will be rejected by kernel. Enforce zero-extension for pointers and array system call arguments. For integer types, extend to int64_t (the full register) using a regular cast, resulting in zero or sign extension based on the signedness of the original type. For void mmap(void addr, size_t length, int prot, int flags, int fd, off_t offset); we now generate 0: 41 f7 c1 ff 0f 00 00 test $0xfff,%r9d 7: 75 1f jne 28 <__mmap64+0x28> 9: 48 63 d2 movslq %edx,%rdx c: 89 f6 mov %esi,%esi e: 4d 63 c0 movslq %r8d,%r8 11: 4c 63 d1 movslq %ecx,%r10 14: b8 09 00 00 40 mov $0x40000009,%eax 19: 0f 05 syscall That is 1. addr is unchanged. 2. length is zero-extend to 64 bits. 3. prot is sign-extend to 64 bits. 4. flags is sign-extend to 64 bits. 5. fd is sign-extend to 64 bits. 6. offset is unchanged. For int arguments, since kernel uses only the lower 32 bits and ignores the upper 32 bits in 64-bit registers, these work correctly. Tested on x86-64 and x32. There are no code changes on x86-64.	6 years ago
Joseph Myers	319d2a7b60	Add GRND_INSECURE from Linux 5.6 to sys/random.h This patch adds the GRND_INSECURE constant from Linux 5.6 to glibc's sys/random.h. This is also added to the documentation. The constant acts as a no-op for the Hurd implementation (as that doesn't check whether the flags are known), which is semantically fine, while older Linux kernels reject unknown flags with an EINVAL error. Tested for x86_64.	6 years ago
Joseph Myers	b56875d5e0	Update kernel version to 5.6 in tst-mman-consts.py. This patch updates the kernel version in the test tst-mman-consts.py to 5.6. (There are no new constants covered by this test in 5.6 that need any other header changes.) Tested with build-many-glibcs.py.	6 years ago
Adhemerval Zanella	b1caa144c7	Update mips libm-test-ulps	6 years ago
Adhemerval Zanella	17e7d1c5f8	Update alpha libm-test-ulps	6 years ago
Adhemerval Zanella	8a7f8da168	Update ia64 libm-test-ulps	6 years ago
Adhemerval Zanella	e379112b68	Update sparc libm-test-ulps	6 years ago
Adhemerval Zanella	79943b37a0	Update arm libm-test-ulps	6 years ago
Adhemerval Zanella	6a0474c769	Update aarch64 libm-test-ulps	6 years ago
kokoye2007	8a1d13d0c7	Updates to the shn_MM locale [BZ #25532 ]	6 years ago
Tulio Magno Quites Machado Filho	bd6cdfc18c	powerpc: Update ULPs and xfail more ibm128 outputs There are 2 new input values that require to be marked as xfail-rounding:ibm128-libgcc as they're known to fail because of libgcc issues with different rounding modes. Otherwise, the other tests just need an increase in ULP.	6 years ago
H.J. Lu	93a0959ef2	i386: Remove build support for GCC older than GCC 6 Since GCC 6.2 or later is required to build glibc, remove build support for GCC older than GCC 6. Testd with GCC 6.4 and GCC 9.3. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>	6 years ago
Rafał Lużyński	10b2cdc3b3	oc_FR locale: Fix spelling of April (bug 25639) Confirmed by CLDR and a native speaker: "abril" is more often used even if "abrial" is also correct. Both nominative (alt_mon) and genitive (mon) cases are updated.	6 years ago
John David Anglin	a8d74ee47b	Update hppa libm-test-ulps	6 years ago
Lukasz Majewski	0b65a8fbaf	y2038: linux: Provide __mq_timedreceive_time64 implementation This patch provides new __mq_timedreceive_time64 explicit 64 bit function for receiving messages with absolute timeout. Moreover, a 32 bit version - __mq_timedreceive has been refactored to internally use __mq_timedreceive_time64. The __mq_timedreceive is now supposed to be used on systems still supporting 32 bit time (__TIMESIZE != 64) - hence the necessary conversion to 64 bit struct __timespec64 from struct timespec. The new mq_timedsend_time64 syscall available from Linux 5.1+ has been used, when applicable. As this wrapper function is also used internally in the glibc, to e.g. provide mq_receive implementation, an explicit check for abs_timeout being NULL has been added due to conversions between struct timespec and struct __timespec64. Before this change the Linux kernel handled this NULL pointer. Build tests: - ./src/scripts/build-many-glibcs.py glibcs Run-time tests: - Run specific tests on ARM/x86 32bit systems (qemu): https://github.com/lmajewski/meta-y2038 and run tests: https://github.com/lmajewski/y2038-tests/commits/master Linux kernel, headers and minimal kernel version for glibc build test matrix: - Linux v5.1 (with mq_timedreceive_time64) and glibc built with v5.1 as minimal kernel version (--enable-kernel="5.1.0") The __ASSUME_TIME64_SYSCALLS flag defined. - Linux v5.1 and default minimal kernel version The __ASSUME_TIME64_SYSCALLS not defined, but kernel supports mq_timedreceive_time64 syscall. - Linux v4.19 (no mq_timedreceive_time64 support) with default minimal kernel version for contemporary glibc (3.2.0) This kernel doesn't support mq_timedreceive_time64 syscall, so the fallback to mq_timedreceive is tested. Above tests were performed with Y2038 redirection applied as well as without (so the __TIMESIZE != 64 execution path is checked as well). Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>	6 years ago
Lukasz Majewski	6f5eb5b2e5	y2038: linux: Provide __mq_timedsend_time64 implementation This patch provides new __mq_timedsend_time64 explicit 64 bit function for sending messages with absolute timeout. Moreover, a 32 bit version - __mq_timedsend has been refactored to internally use __mq_timedsend_time64. The __mq_timedsend is now supposed to be used on systems still supporting 32 bit time (__TIMESIZE != 64) - hence the necessary conversion to 64 bit struct __timespec64 from struct timespec. The new __mq_timedsend_time64 syscall available from Linux 5.1+ has been used, when applicable. As this wrapper function is also used internally in the glibc, to e.g. provide mq_send implementation, an explicit check for abs_timeout being NULL has been added due to conversions between struct timespec and struct __timespec64. Before this change the Linux kernel handled this NULL pointer. Build tests: - ./src/scripts/build-many-glibcs.py glibcs Run-time tests: - Run specific tests on ARM/x86 32bit systems (qemu): https://github.com/lmajewski/meta-y2038 and run tests: https://github.com/lmajewski/y2038-tests/commits/master Linux kernel, headers and minimal kernel version for glibc build test matrix: - Linux v5.1 (with mq_timedsend_time64) and glibc built with v5.1 as a minimal kernel version (--enable-kernel="5.1.0") The __ASSUME_TIME64_SYSCALLS flag defined. - Linux v5.1 and default minimal kernel version The __ASSUME_TIME64_SYSCALLS not defined, but kernel supports mq_timedsend_time64 syscall. - Linux v4.19 (no mq_timedsend_time64 support) with default minimal kernel version for contemporary glibc (3.2.0) This kernel doesn't support mq_timedsend_time64 syscall, so the fallback to mq_timedsend is tested. Above tests were performed with Y2038 redirection applied as well as without (so the __TIMESIZE != 64 execution path is checked as well). Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>	6 years ago
Lukasz Majewski	390b5a4727	y2038: include: Move struct __timespec64 definition to a separate file The struct __timespec64's definition has been moved from ./include/time.h to ./include/struct___timespec64.h. This change would prevent from polluting other glibc namespaces (when headers are modified to support 64 bit time on architectures with __WORDSIZE==32). Now it is possible to just include definition of this particular structure when needed. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>	6 years ago
DJ Delorie	b9cde4e3aa	malloc: ensure set_max_fast never stores zero [BZ #25733 ] The code for set_max_fast() stores an "impossibly small value" instead of zero, when the parameter is zero. However, for small values of the parameter (ex: 1 or 2) the computation results in a zero being stored anyway. This patch checks for the parameter being small enough for the computation to result in zero instead, so that a zero is never stored. key values which result in zero being stored: x86-64: 1..7 (or other 64-bit) i686: 1..11 armhfp: 1..3 (or other 32-bit) Reviewed-by: Carlos O'Donell <carlos@redhat.com>	6 years ago
Paul E. Murphy	4531ba8ebf	powerpc64le: enforce non-specific long double in .gnu.attributes section We turn off this feature to avoid polluting our shared libary with a specific value. However, static libgcc is not under our control, and has enabled this for ibm128 routines. This pollutes the resulting shared libraries with it. Attach a post-linking hook to replace this section with one crafted as hard-float + indeterminate ldbl. This allows IEEE ldbl users to avoid having to disable the gnu attributes feature which should protect them from linking ibm ldbl libraries using the gnu attributes feature. Currently, this only replaces libc and libm which support both ldbl formats and rely on application code to explicitly determine which is to be used. Strictly speaking, the section could be deleted with minimal lost value. However correctly set attributes could prove useful for some future change, and similarly missing attributes. Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>	6 years ago
Paul E. Murphy	8e72163b16	powerpc64le: workaround ieee long double / _Float128 stdc++ bug -mabi=ieeelongdouble triggers the stdc++ libraries _Float128 support, which then breaks if algorithm is included. For now, explicitly disable _Float128 for such tests. I have opened up GCC BZ 94080 to track this. Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>	6 years ago
Paul E. Murphy	6f82d05034	powerpc64le: Enforce -mabi=ibmlongdouble when -mfloat128 used I have observed a bug on 7.4.0 whereby __mulkc3 calls are swapped with __multc3 depending on ABI selection. For the sake of being overly cautious, build all _Float128 files with ibm128 to workaround these compilers. This has been noted in GCC BZ 84914, and will not be fixed for GCC 7. Likewise, non-math files built with _Float128 are assumed to have ibm long double. Explicilty preserve this assumption. Finally, add some bootstrapping code to avoid applying these options until IEEE long double is enabled as they require GCC 7 and above. Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>	6 years ago
Paul E. Murphy	25ee3931f0	powerpc64le/multiarch: don't generate strong aliases for fmaf128-ppc64 This prevents generating a second alias for __fmaieee128 when compiling with ldouble == ieee128 redirects.	6 years ago
Paul E. Murphy	bd98471eb2	ldbl-128ibm: simplify iscanonical.h The test for enabling _Float128 or IEEE 128 long double can be greatly simplified knowing that there is no ibm128, thus we require no special cases, and everything is canonical. This reverts the changes to ldbl-128ibm iscanonical.h from commit `8dbfea3a20` and extends the check for __NO_LONG_DOUBLE_MATH to include a check for float128 redirects to long double. Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>	6 years ago
H.J. Lu	f90a7e96df	i386: Disable check_consistency for GCC 5 and above [BZ #25788 ] check_consistency should be disabled for GCC 5 and above since there is no fixed PIC register in GCC 5 and above. Check __GNUC_PREREQ (5,0) instead OPTIMIZE_FOR_GCC_5 since OPTIMIZE_FOR_GCC_5 is false with -fno-omit-frame-pointer.	6 years ago
Joseph Myers	f9ac84f92f	Add IPPROTO_ETHERNET and IPPROTO_MPTCP from Linux 5.6 to netinet/in.h. This patch adds the IPPROTO_ETHERNET and IPPROTO_MPTCP constants from Linux 5.6 to glibc's netinet/in.h. Tested for x86_64.	6 years ago
Joseph Myers	e788beaf09	Update syscall lists for Linux 5.6. Linux 5.6 has new openat2 and pidfd_getfd syscalls. This patch adds them to syscall-names.list and regenerates the arch-syscall.h files. Tested with build-many-glibcs.py.	6 years ago
Florian Weimer	8f7a75d700	elf: Implement DT_AUDIT, DT_DEPAUDIT support [BZ #24943 ] binutils ld has supported --audit, --depaudit for a long time, only support in glibc has been missing. Reviewed-by: Carlos O'Donell <carlos@redhat.com>	6 years ago

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