glibc

Commit Graph

Author	SHA1	Message	Date
Florian Weimer	7b5bfe7783	elf: Assert that objects are relocated before their constructors run If we try to run constructors before relocation, this is always a dynamic linker bug. An assert is easier to notice than a call via an invalid function pointer (which may not even produce a valid call stack). Reviewed-by: Carlos O'Donell <carlos@redhat.com>	6 years ago
Anton Blanchard via Libc-alpha	aa70d05632	powerpc: Optimized stpcpy for POWER9 Add stpcpy support to the POWER9 strcpy. This is up to 40% faster on small strings and up to 90% faster on long relatively unaligned strings, compared to the POWER8 version. A few examples: __stpcpy_power9 __stpcpy_power8 Length 20, alignments in bytes 4/ 4: 2.58246 4.8788 Length 1024, alignments in bytes 1/ 6: 24.8186 47.8528	6 years ago
Anton Blanchard via Libc-alpha	3903704850	powerpc: Optimized strcpy for POWER9 This version uses VSX store vector with length instructions and is significantly faster on small strings and relatively unaligned large strings, compared to the POWER8 version. A few examples: __strcpy_power9 __strcpy_power8 Length 16, alignments in bytes 0/ 0: 2.52454 4.62695 Length 412, alignments in bytes 4/ 0: 11.6 22.9185	6 years ago
H.J. Lu	674ea88294	x86: Move CET control to _dl_x86_feature_control [BZ #25887 ] 1. Include <dl-procruntime.c> to get architecture specific initializer in rtld_global. 2. Change _dl_x86_feature_1[2] to _dl_x86_feature_1. 3. Add _dl_x86_feature_control after _dl_x86_feature_1, which is a struct of 2 bitfields for IBT and SHSTK control This fixes [BZ #25887].	6 years ago
Samuel Thibault	cbfc16122e	sunrpc/tst-udp-: Fix timeout value Following on `00c3da43a` ('sunrpc/tst-udp-timeout: Fix timeout value'). While e.g. 2.5 timeout can be represented exactly with doubles, time stamps may not be represented that exactly, and thus with coarse-grain clocks (e.g. 10ms) we may end up with 2.499-ish values due to rounding errors. sunrpc/tst-udp-timeout.c (test_udp_server): Add more timeout slack. * sunrpc/tst-udp-nonblocking.c (do_test): Likewise.	6 years ago
Florian Weimer	501bdb5dd6	Linux: Remove remnants of the getcpu cache The getcpu cache was removed from the kernel in Linux 2.6.24. glibc support from the sched_getcpu implementation was removed in commit `dd26c44403` ("Consolidate sched_getcpu").	6 years ago
Paul Eggert	61d64408a1	Update timezone code from tzcode 2020a This patch updates files coming from tzcode to tzcode 2020a. This is mostly for better support for Internet RFC 8536, by adding support to zic for the Expires line (new to tzcode 2020a), the -b option (new to 2019b) and the -r option (new to 2019a). One trivial change to other glibc was needed. * time/tzfile.c (__tzfile_read): Adjust to tzcode private.h renaming. * timezone/private.h, timezone/tzfile.h, timezone/version: * timezone/zdump.c, timezone/zic.c: Update from tzcode 2020a.	6 years ago
Lexi Shao	59b64f9cbb	aarch64: fix strcpy and strnlen for big-endian [BZ #25824 ] This patch fixes the optimized implementation of strcpy and strnlen on a big-endian arm64 machine. The optimized method uses neon, which can process 128bit with one instruction. On a big-endian machine, the bit order should be reversed for the whole 128-bits double word. But with instuction rev64 datav.16b, datav.16b it reverses 64bits in the two halves rather than reversing 128bits. There is no such instruction as rev128 to reverse the 128bits, but we can fix this by loading the data registers accordingly. Fixes 0237b61526e7("aarch64: Optimized implementation of strcpy") and 2911cb68ed3d("aarch64: Optimized implementation of strnlen"). Signed-off-by: Lexi Shao <shaolexi@huawei.com> Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>	6 years ago
Florian Weimer	981e638d38	locale: Add transliteration for Geresh, Gershayim (U+05F3, U+05F4) ISO-8859-8-based locales will need this transliteration if the locale files contain these Unicode characters. Reviewed-by: Carlos O'Donell <carlos@redhat.com>	6 years ago
Florian Weimer	a4a3519245	string: Fix string/tst-memmove-overflow to compile with GCC 7 GCC 8 relaxed what kind of expressions can be used in initializers, and the previous use of static const variables relied on that. Switch to wide (non-int) enum constants instead, which is another GCC extension that is more widely implemented. Reviewed-by: Carlos O'Donell <carlos@redhat.com> Tested-by: Carlos O'Donell <carlos@redhat.com>	6 years ago
guojinhui	98b2dc7e20	Add arch-syscall.h dependency for generating sysd-syscalls file After using "make update-syscall-lists" to update arch-syscall.h for new kernel versions, sysd-syscalls will not be not be regenerated. This will cause a compile error because the new data is not being picked up. Fixes commit `a1bd5f8673` ("Linux: Use system call tables during build"). Reviewed-by: Florian Weimer <fweimer@redhat.com>	6 years ago
Florian Weimer	eca1b23332	arm: XFAIL string/tst-memmove-overflow due to bug 25620 Also reduce the amount of output in case of a large-scale mismatch in the copied data. Reviewed-by: Carlos O'Donell <carlos@redhat.com>	6 years ago
Florian Weimer	ad78d70275	elf: Remove redundant add_to_global_resize_failure call from dl_open_args The second call does not do anything because the data structures have already been resized by the call that comes before the demarcation point. Fixes commit `a509eb117f` ("Avoid late dlopen failure due to scope, TLS slotinfo updates [BZ #25112]"). Reviewed-by: Carlos O'Donell <carlos@redhat.com>	6 years ago
Florian Weimer	eec0f4218c	string: Add string/tst-memmove-overflow, a test case for bug 25620 Reviewed-by: Carlos O'Donell <carlos@redhat.com> Tested-by: Carlos O'Donell <carlos@redhat.com>	6 years ago
Florian Weimer	0e28cfff9d	support: Add support_blob_repeat_allocate_shared Reviewed-by: Carlos O'Donell <carlos@redhat.com>	6 years ago
Andreas Schwab	4cab20fa49	nptl: wait for pending setxid request also in detached thread (bug 25942) There is a race between __nptl_setxid and exiting detached thread, which causes a deadlock on stack_cache_lock. The deadlock happens in this state: T1: setgroups -> __nptl_setxid (holding stack_cache_lock, waiting on cmdp->cntr == 0) T2 (detached, exiting): start_thread -> __deallocate_stack (waiting on stack_cache_lock) more threads waiting on stack_cache_lock in pthread_create For non-detached threads, start_thread waits for its own setxid handler to finish before exiting. Do this for detached threads as well.	6 years ago
Florian Weimer	16536e98e3	aarch64: Accept PLT calls to __getauxval within libc.so When using outline atomics (-moutline-atomics, the default for ARMv8-A starting with GCC 10), libgcc contains an ELF constructor which calls __getauxval. This code is built outside of glibc, so none of its internal PLT avoidance schemes can be applied to it. This change suppresses the elf/check-localplt failure.	6 years ago
Sergey	c2d0411488	Use unsigned constants for ICMP6 filters [BZ #22489 ] The core problem here is that the filter array elements are unsigned but the computed constants are signed. This both causes a signededness conversion at the &= step and may cause undefined behavior if the MSB is being modified. This patch uses unsigned constants to avoid both cases. - DJ	6 years ago
Florian Weimer	6fcb0272f7	Linux: Enhance glibcsyscalls.py to support listing system calls The script can now be called to query the definition status of system call numbers across all architectures, like this: $ python3 sysdeps/unix/sysv/linux/glibcsyscalls.py query-syscall sync_file_range sync_file_range2 sync_file_range: defined: aarch64 alpha csky hppa i386 ia64 m68k microblaze mips/mips32 mips/mips64/n32 mips/mips64/n64 nios2 riscv/rv64 s390/s390-32 s390/s390-64 sh sparc/sparc32 sparc/sparc64 x86_64/64 x86_64/x32 undefined: arm powerpc/powerpc32 powerpc/powerpc64 sync_file_range2: defined: arm powerpc/powerpc32 powerpc/powerpc64 undefined: aarch64 alpha csky hppa i386 ia64 m68k microblaze mips/mips32 mips/mips64/n32 mips/mips64/n64 nios2 riscv/rv64 s390/s390-32 s390/s390-64 sh sparc/sparc32 sparc/sparc64 x86_64/64 x86_64/x32 This command lists the headers containing the system call numbers: $ python3 sysdeps/unix/sysv/linux/glibcsyscalls.py list-headers The argument parser code is based on a suggestion from Adhemerval Zanella. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>	6 years ago
Martin Sebor	978e8ac39f	Suppress GCC 10 true positive warnings [BZ #25967 ] Suppress or avoid warnings in tests that exercise failure modes by making calls with invalid arguments. Reviewed-by: DJ Delorie <dj@redhat.com> Reviewed-by: Florian Weimer <fweimer@redhat.com> Reviewed-by: Joseph Myers <joseph@codesourcery.com>	6 years ago
Florian Weimer	e627106266	POWER: Add context-synchronizing instructions to pkey_write [BZ #25954 ] Sandipan Das reported that, "The Power ISA mandates that all writes to the Authority Mask Register (AMR) must always be preceded as well as succeeded by a context-synchronizing instruction. This applies to both the privileged and unprivileged variants of the Move To AMR instruction. This [requirement] is from Table 6 of Chapter 11 in page 1134 of Power ISA 3.0B. The document can be found here: <https://ibm.ent.box.com/s/1hzcwkwf8rbju5h9iyf44wm94amnlcrv> " See this kernel patch submission: <https://lore.kernel.org/linuxppc-dev/5f65cf37be993760de8112a88da194e3ccbb2bf8.1588959697.git.sandipan@linux.ibm.com/>	6 years ago
Samuel Thibault	61416e1921	hurd: Add missing sigstate members initialization * hurd/hurdsig.c (_hurd_thread_sigstate): Initialize critical_section_lock, active_resources, cancel, and cancel_hook fields.	6 years ago
H.J. Lu	55c7bcc71b	x86-64: Use RDX_LP on __x86_shared_non_temporal_threshold [BZ #25966 ] Since __x86_shared_non_temporal_threshold is defined as long int __x86_shared_non_temporal_threshold; and long int is 4 bytes for x32, use RDX_LP to compare against __x86_shared_non_temporal_threshold in assembly code.	6 years ago
Adhemerval Zanella	e1b871e25f	linux: Remove assembly umount2 implementation Only alpha and ia64 do not support __NR_umount2 (defined as __NR_umount), but recent kernel fixes (74cd2184833f for ia64, and 12b57c5c70f39 for alpha) add the required alias. Checked with a build against all affected ABIs. Reviewed-by: Florian Weimer <fweimer@redhat.com>	6 years ago
Florian Weimer	9f6bd1f605	signal: Use <sigsetops.h> for sigemptyset, sigfillset This avoids changing the entire sigset_t structure. Updating the actually used part is sufficient.	6 years ago
Florian Weimer	3404def00a	ckb_IQ, or_IN locales: Add missing reorder-end keywords This suppresses a non-fatal error during locale building. Reviewed-by: Rafał Lużyński <digitalfreak@lingonborough.com>	6 years ago
Vineet Gupta	1270fbaaee	semaphore: consolidate arch headers into a generic one This consolidates the copy-pasted arch specific semaphore header into single version (based on s390) which suffices 32-bit and and 64-bit arch/ABI based on the canonical WORDSIZE. For now I've left out arches which use alternate defines to choose for 32 vs 64-bit builds (aarch64, mips) which in theory can also use the same header. Passes build-many for aarch64-linux-gnu arm-linux-gnueabi arm-linux-gnueabihf riscv64-linux-gnu-rv64imac-lp64 riscv64-linux-gnu-rv64imafdc-lp64 x86_64-linux-gnu microblaze-linux-gnu nios2-linux-gnu Suggested-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>	6 years ago
Joseph Myers	99a327f801	Use GCC 10 branch in build-many-glibcs.py. This updates the default GCC version used in build-many-glibcs.py when no version is specified explicitly. I'm replacing my bot using GCC 8 with one using GCC 10 (leaving the GCC 9 and GCC mainline bots running as at present).	6 years ago
Florian Weimer	d69c3a9e75	Document the internal _ and N_ macros Reviewed-by: Carlos O'Donell <carlos@redhat.com>	6 years ago
Lukasz Majewski	898f379316	y2038: Provide conversion helpers for struct __timex64 Those functions allow easy conversion between Y2038 safe, glibc internal struct __timex64 and struct timex. Those functions are put in Linux specific sys/timex.h file, as putting them into glibc's local include/time.h would cause build break on HURD as it doesn't support struct timex related syscalls. Build tests: ./src/scripts/build-many-glibcs.py glibcs Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>	6 years ago
Lukasz Majewski	dbf8178fdc	y2038: Introduce struct __timex64 - new internal glibc type The introduced glibc's 'internal' struct __timex64 is a copy of Linux kernel's struct __kernel_timex (v5.6) introduced for properly handling data for clock_adjtime64 syscall. As the struct's __kernel_timex size is the same as for archs with __WORDSIZE == 64, proper padding and data types conversion (i.e. long to long long) had to be added for architectures with __WORDSIZE == 32 && __TIMESIZE != 64. Moreover, it stores time in struct __timeval64 rather than struct timeval, which makes it Y2038-proof. Build tests: ./src/scripts/build-many-glibcs.py glibcs Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>	6 years ago
Lukasz Majewski	a308615f7c	y2038: include: Move struct __timeval64 definition to a separate file The struct __timeval64's definition has been moved from ./include/time.h to ./include/struct___timeval64.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: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>	6 years ago
Lukasz Majewski	481d01fa2b	y2038: nscd: Modify nscd_helper to use __clock_gettime64 The nscd/nscd_helper.c uses __clock_gettime to get current time and on this basis calculate the relative timeout for poll. By using __clock_gettime64 on systems with __WORDSIZE == 32 && __TIMESIZE != 64 the timeout is correctly calculated after time_t overflow.	6 years ago
Lukasz Majewski	e008836c4a	y2038: inet: Convert inet deadline to support 64 bit time This change brings 64 bit time support to inet deadline related code for architectures with __WORDSIZE == 32 && __TIMESIZE != 64. It is also safe to replace struct timespec with struct __timespec64 in deadline related structures as: - The __deadline_to_ms () returns the number of miliseconds to deadline to be used with __poll (and hence it is a relative value). - To calculate the deadline from timeval (which will be converted latter) the uintmax_t type is used (unsinged long long int). Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>	6 years ago
Lukasz Majewski	1959ed4b9e	y2038: hurd: Provide __clock_gettime64 function For Linux glibc ports the __TIMESIZE == 64 ensures proper aliasing for __clock_gettime64 (to __clock_gettime). When __TIMESIZE != 64 (like ARM32, PPC) the glibc expects separate definition of the __clock_gettime64. The HURD port only provides __clock_gettime, so this patch adds __clock_gettime64 as a tiny wrapper on it. Acked-by: Samuel Thibault <samuel.thibault@ens-lyon.org>	6 years ago
Lukasz Majewski	eb98965b53	y2038: Export __clock_gettime64 to be usable in other libraries In the glibc project calls to clock_gettime shall be replaced with __clock_gettime64, which is supporting 64 bit time. To allow that the __clock_gettime64 needs to be exported as a GLIBC_PRIVATE symbol.	6 years ago
Florian Weimer	ad14f4f8db	manual: Document the O_NOFOLLOW open flag	6 years ago
Paul E. Murphy	4a4db1de2f	powerpc64le/power9: guard power9 strcmp against rtld usage [BZ# 25905] strcmp is used while resolving PLT references. Vector registers should not be used during this. The P9 strcmp makes heavy use of vector registers, so it should be avoided in rtld. This prevents quiet vector register corruption when glibc is configured with --disable-multi-arch and --with-cpu=power9. This can be seen with test-float64x-compat_totalordermag during the first call into totalordermagf64x@GLIBC_2.27. Add a guard to fallback to the power8 implementation when building power9 strcmp for libraries other than libc. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>	6 years ago
Paul E. Murphy	a49e56a945	float128: use builtin_signbitf128 always The minimum GCC version has been raised to 6.2 for building glibc. Therefore, follow the advice inside the implementation and remove the GCC < 6 codepath. Likewise, remove the hidden_proto as all internal usages should inline now.	6 years ago
Martin Sebor	06febd8c67	improve out-of-bounds checking with GCC 10 attribute access [BZ #25219 ] Adds the access attribute newly introduced in GCC 10 to the subset of function declarations that are already covered by _FORTIFY_SOURCE and that don't have corresponding GCC built-in equivalents. Reviewed-by: DJ Delorie <dj@redhat.com>	6 years ago
Chung-Lin Tang	38c6788818	nios2: delete sysdeps/unix/sysv/linux/nios2/kernel-features.h Commit `06436acf81` created a kernel-features.h file with '#undef __ASSUME_SYSVIPC_DEFAULT_IPC_64', which is wrong for Nios II. Deleting the header.	6 years ago
H.J. Lu	14f43dd34d	powerpc: Rename argN to _argN in LOADARGS_N [BZ #25902 ] LOADARGS_N in powerpc/sysdep.h uses argN as local variables. It breaks when argN is also a function argument. Rename argN to _argN to avoid conflict.	6 years ago
Carlos O'Donell	6f0baacf0f	locale/tst-localedef-path-norm: Don't create $(complocaledir) We automatically create $(complocaledir) in the testroot.root now and so we don't need to create it in the test. Tested on x86_64. Reviewed-by: DJ Delorie <dj@redhat.com>	6 years ago
Carlos O'Donell	183083c359	support: Set errno before testing it. In test-conainer we should set errno to 0 before calling strtol, and check after with TEST_COMPARE. In tst-support_capture_subprocess we should set errno to 0 before checking it after the call to strtol. Tested on x86_64. Reviewed-by: DJ Delorie <dj@redhat.com>	6 years ago
Carlos O'Donell	df6c63ebbc	localedef: Add tests-container test for --no-hard-links. The new tst-localedef-hardlinks verifies that when compiling two locales (with default output directory) one with --no-hard-links and one without the option, results in the expected behaviour. When --no-hard-links is used the link counts on LC_CTYPE is 1, indicating that even thoug the two locale are identical (though different named source files and output direcotry) the localedef did not carry out the hard link optimization. Then when --no-hard-links is omitted the localedef hard link optimization is correctly carried out and for 2 compiled locales the link count for LC_CTYPE is 2. Reviewed-by: DJ Delorie <dj@redhat.com>	6 years ago
Carlos O'Donell	033362cfd7	test-container: Support $(complocaledir) and mkdirp. Expand the support infrastructure: - Create $(complocaledir) in the testroot.pristine to support localedef. - Add the variable $complocaledir to script support. - Add the script command 'mkdirp'. All localedef tests which run with default paths need to have the $(complocaledir) created in testroot.pristine. The localedef binary will not by itself create the default path, but it will write into the path. By adding this we can simplify the localedef tests. The variable $complocaledir is the value of the configured $(complocaledir) which is the location of the compiled locales that will be searched by the runtime by default. The command mkdirp will be available in script setup and will be equivalent to running `mkdir -p`. The variable and command can be used to write more complex tests. Reviewed-by: DJ Delorie <dj@redhat.com>	6 years ago
Florian Weimer	19108a3832	i386: Remove unused variable in sysdeps/x86/cacheinfo.c Commit `a98dc92dd1` ("x86: Add cache information support for Zhaoxin processors") introduced an unused variable warning in the default i686-linux-gnu build: In file included from ../sysdeps/i386/cacheinfo.c:3: ../sysdeps/x86/cacheinfo.c: In function 'init_cacheinfo': ../sysdeps/x86/cacheinfo.c:762:16: error: unused variable 'eax' [-Werror=unused-variable] 762 \| unsigned int eax; \| ^~~	6 years ago
H.J. Lu	ff026950e2	Add a C wrapper for prctl [BZ #25896 ] Add a C wrapper to pass arguments in /* Control process execution. */ extern int prctl (int __option, ...) __THROW; to prctl syscall: extern int prctl (int, unsigned long int, unsigned long int, unsigned long int, unsigned long int);	6 years ago
Gabriel F. T. Gomes	051be01f6b	powerpc64le: Enable support for IEEE long double On platforms where long double may have two different formats, i.e.: the same format as double (64-bits) or something else (128-bits), building with -mlong-double-128 is the default and function calls in the user program match the name of the function in Glibc. When building with -mlong-double-64, Glibc installed headers redirect such calls to the appropriate function. Likewise, the internals of glibc are now built against IEEE long double. However, the only (minimally) notable usage of long double is difftime. Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>	7 years ago
Paul E. Murphy	5c7ccc2983	powerpc64le: blacklist broken GCC compilers (e.g GCC 7.5.0) GCC 7.5.0 (PR94200) will refuse to compile if both -mabi=% and -mlong-double-128 are passed on the command line. Surprisingly, it will work happily if the latter is not. For the sake of maintaining status quo, test for and blacklist such compilers. Tested with a GCC 8.3.1 and GCC 7.5.0 compiler for ppc64le. Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>	6 years ago

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