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* stdlib: Implement introsort for qsort (BZ 19305)Adhemerval Zanella2023-10-311-7/+82
| | | | | | | | | | This patch makes the quicksort implementation to acts as introsort, to avoid worse-case performance (and thus making it O(nlog n)). It switch to heapsort when the depth level reaches 2*log2(total elements). The heapsort is a textbook implementation. Checked on x86_64-linux-gnu and aarch64-linux-gnu. Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
* stdlib: qsort: Move some macros to inline functionAdhemerval Zanella2023-10-311-12/+23
| | | | Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
* stdlib: Move insertion sort out qsortAdhemerval Zanella2023-10-311-47/+54
| | | | Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
* stdlib: Optimization qsort{_r} swap implementationAdhemerval Zanella2023-10-311-18/+77
| | | | | | | | | | | | The optimization takes in consideration both the most common elements are either 32 or 64 bit in size and inputs are aligned to the word boundary. This is similar to what msort does. For large buffer the swap operation uses memcpy/mempcpy with a small fixed size buffer (so compiler might inline the operations). Checked on x86_64-linux-gnu. Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
* string: Add internal memswap implementationAdhemerval Zanella2023-10-313-0/+245
| | | | | | | | | | | | | | The prototype is: void __memswap (void *restrict p1, void *restrict p2, size_t n) The function swaps the content of two memory blocks P1 and P2 of len N. Memory overlap is NOT handled. It will be used on qsort optimization. Checked on x86_64-linux-gnu and aarch64-linux-gnu. Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
* crypt: Remove manul entry for --enable-cryptAdhemerval Zanella2023-10-311-13/+0
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* Use Linux 6.6 in build-many-glibcs.pyJoseph Myers2023-10-311-1/+1
| | | | | | | This patch makes build-many-glibcs.py use Linux 6.6. Tested with build-many-glibcs.py (host-libraries, compilers and glibcs builds).
* crypt: Remove libcrypt supportAdhemerval Zanella2023-10-3097-5801/+61
| | | | | | | | | | | | | | | | | | All the crypt related functions, cryptographic algorithms, and make requirements are removed, with only the exception of md5 implementation which is moved to locale folder since it is required by localedef for integrity protection (libc's locale-reading code does not check these, but localedef does generate them). Besides thec code itself, both internal documentation and the manual is also adjusted. This allows to remove both --enable-crypt and --enable-nss-crypt configure options. Checked with a build for all affected ABIs. Co-authored-by: Zack Weinberg <zack@owlfolio.org> Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* sparc: Remove optimize md5, sha256, and sha512Adhemerval Zanella2023-10-3015-457/+1
| | | | | | | | | | The libcrypt was maked to be phase out on 2.38, and a better project already exist that provide both compatibility and better API (libxcrypt). The sparc optimizations add the burden to extra build-many-glibcs.py configurations. Checked on sparc64 and sparcv9. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* build-many-glibcs: Fix traililing whitespaceAdhemerval Zanella2023-10-301-3/+3
| | | | From commit d846c2838942297c9644f2f38bdad0fb88f42245.
* LoongArch: Delete excessively allocated memory.caiyinyu2023-10-261-34/+34
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* LoongArch: Update hwcap.h to sync with LoongArch kernel.caiyinyu2023-10-261-0/+1
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* LoongArch: Unify Register Names.caiyinyu2023-10-262-19/+19
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* AArch64: Add support for MOPS memcpy/memmove/memsetWilco Dijkstra2023-10-2411-1/+141
| | | | | | | | Add support for MOPS in cpu_features and INIT_ARCH. Add ifuncs using MOPS for memcpy, memmove and memset (use .inst for now so it works with all binutils versions without needing complex configure and conditional compilation). Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
* Move getnameinfo from 'inet' to 'nss'Arjun Shankar2023-10-245-3/+6
| | | | | | | getnameinfo is an entry points for nss functionality. This commit moves it from the 'inet' subdirectory to 'nss'. The corresponding Versions entry is also moved from 'posix' into 'nss'. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Move getaddrinfo from 'posix' into 'nss'Arjun Shankar2023-10-2414-54/+22
| | | | | | | getaddrinfo is an entry point for nss functionality. This commit moves it from 'sysdeps/posix' to 'nss', gets rid of the stub in 'posix', and moves all associated tests as well. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Move 'services' routines from 'inet' into 'nss'Arjun Shankar2023-10-2410-13/+19
| | | | | | | The getservby* and getservent* routines are entry points for nss functionality. This commit moves them from the 'inet' subdirectory to 'nss'. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Move 'rpc' routines from 'inet' into 'nss'Arjun Shankar2023-10-2412-11/+20
| | | | | | | | The getrpcby* and getrpcent* routines are entry points for nss functionality. This commit moves them from the 'inet' subdirectory to 'nss'. The Versions entries for these routines along with a test, located in the 'sunrpc' subdirectory, are also moved into 'nss'. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Move 'protocols' routines from 'inet' into 'nss'Arjun Shankar2023-10-2410-12/+19
| | | | | | | The getprotoby* and getprotoent* routines are entry points for nss functionality. This commit moves them from the 'inet' subdirectory to 'nss'. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Move 'networks' routines from 'inet' into 'nss'Arjun Shankar2023-10-2410-14/+22
| | | | | | | The getnetby* and getnetent* routines are entry points for nss functionality. This commit moves them from the 'inet' subdirectory to 'nss'. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Move 'netgroup' routines from 'inet' into 'nss'Arjun Shankar2023-10-2410-15/+25
| | | | | | | These netgroup routines are entry points for nss functionality. This commit moves them along with netgroup.h from the 'inet' subdirectory to 'nss', and adjusts any references accordingly. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Move 'hosts' routines from 'inet' into 'nss'Arjun Shankar2023-10-2413-20/+27
| | | | | | | The gethostby* and gethostent* routines are entry points for nss functionality. This commit moves them from the 'inet' subdirectory to 'nss'. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Move 'ethers' routines from 'inet' into 'nss'Arjun Shankar2023-10-246-6/+11
| | | | | | | ether_hostton and ether_ntohost are entry points for nss functionality. This commit moves them from the 'inet' subdirectory to 'nss', and adjusts any references accordingly. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Move 'aliases' routines from 'inet' into 'nss'Arjun Shankar2023-10-2410-9/+16
| | | | | | | The aliases routines are entry points for nss functionality. This commit moves aliases.h and the aliases routines from the 'inet' subdirectory to 'nss', and adjusts any external references. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Remove 'shadow' and merge into 'nss'Arjun Shankar2023-10-2419-73/+42
| | | | | | | | The majority of shadow routines are entry points for nss functionality. This commit removes the 'shadow' subdirectory and moves all functionality and tests to 'nss'. References to shadow/ are accordingly changed. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Remove 'pwd' and merge into 'nss'Arjun Shankar2023-10-2419-63/+34
| | | | | | | The majority of pwd routines are entry points for nss functionality. This commit removes the 'pwd' subdirectory and moves all functionality and tests to 'nss'. References to pwd/ are accordingly changed. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Remove 'gshadow' and merge into 'nss'Arjun Shankar2023-10-2420-62/+49
| | | | | | | | The majority of gshadow routines are entry points for nss functionality. This commit removes the 'gshadow' subdirectory and moves all functionality and tests to 'nss'. References to gshadow/ are accordingly changed. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Remove 'grp' and merge into 'nss' and 'posix'Arjun Shankar2023-10-2438-117/+85
| | | | | | | | | | | | | | The majority of grp routines are entry points for nss functionality. This commit removes the 'grp' subdirectory and moves all nss-relevant functionality and all tests to 'nss', and the 'setgroups' stub into 'posix' (alongside the 'getgroups' stub). References to grp/ are accordingly changed. In addition, compat-initgroups.c, a fallback implementation of initgroups is renamed to initgroups-fallback.c so that the build system does not confuse it for nss_compat/compat-initgroups.c. Build time improves very slightly; e.g. down from an average of 45.5s to 44.5s on an 8-thread mobile x86_64 CPU. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* malloc: Fix tst-tcfree3 build csky-linux-gnuabiv2 with fortify sourceAdhemerval Zanella2023-10-232-3/+2
| | | | | | | | | | | | | | | | | | | | | | | With gcc 13.1 with --enable-fortify-source=2, tst-tcfree3 fails to build on csky-linux-gnuabiv2 with: ../string/bits/string_fortified.h: In function ‘do_test’: ../string/bits/string_fortified.h:26:8: error: inlining failed in call to ‘always_inline’ ‘memcpy’: target specific option mismatch 26 | __NTH (memcpy (void *__restrict __dest, const void *__restrict __src, | ^~~~~~ ../misc/sys/cdefs.h:81:62: note: in definition of macro ‘__NTH’ 81 | # define __NTH(fct) __attribute__ ((__nothrow__ __LEAF)) fct | ^~~ tst-tcfree3.c:45:3: note: called from here 45 | memcpy (c, a, 32); | ^~~~~~~~~~~~~~~~~ Instead of relying on -O0 to avoid malloc/free to be optimized away, disable the builtin. Reviewed-by: DJ Delorie <dj@redhat.com>
* test-container: disable ld.so system cache on DSO detectionSimon Chopin2023-10-231-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | When building the testroot, the script runs the newly built ld.so on a couple of binaries in order to copy over any additional libraries needed. However, if the dependencies are found in the system cache, it will be copied over using that path. This is problematic if the system ld.so and the one built don't have the exact same search configuration. We encountered this in Ubuntu, where we build a variant of libc with -fno-omit-frame-pointer for accurate performance profiling. This variant is built using a non-standard slibdir to be able to be co-installed with the default library (e.g. slibdir = /lib/libc6-prof). Since we have /lib pointing to /usr/lib, any additional dependency should still be reachable via /usr. However, resolving via the cache might result in the additional DSOs being copied into $testroot/lib, out of the search path in the container. The problem has been triggered by 1d5024f4f052c12e404d42d3b5bfe9c3e9fd27c4 ("support: Build with exceptions and asynchronous unwind tables [BZ #30587]") which introduced a dependency on libgcc_s.so.1 under some circumstances. Downstream bug: https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/2031495 Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* aarch64: Add vector implementations of exp10 routinesJoe Ramsay2023-10-2313-0/+528
| | | | | Double-precision routines either reuse the exp table (AdvSIMD) or use SVE FEXPA intruction.
* aarch64: Add vector implementations of log10 routinesJoe Ramsay2023-10-2315-1/+584
| | | | A table is also added, which is shared between AdvSIMD and SVE log10.
* aarch64: Add vector implementations of log2 routinesJoe Ramsay2023-10-2315-1/+549
| | | | A table is also added, which is shared between AdvSIMD and SVE log2.
* aarch64: Add vector implementations of exp2 routinesJoe Ramsay2023-10-2313-0/+463
| | | | Some routines reuse table from v_exp_data.c
* aarch64: Add vector implementations of tan routinesJoe Ramsay2023-10-2321-27/+1274
| | | | | This includes some utility headers for evaluating polynomials using various schemes.
* elf: ldconfig should skip temporary files created by package managersFlorian Weimer2023-10-202-13/+30
| | | | | | | This avoids crashes due to partially written files, after a package update is interrupted. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* tst-spawn-cgroup.c: Fix argument order of UNSUPPORTED message.Stefan Liebler2023-10-201-3/+3
| | | | | | | The arguments for "expected" and "got" are mismatched. Furthermore this patch is dumping both values as hex. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> Reviewed-by: Florian Weimer <fweimer@redhat.com>
* Add NT_PPC_DEXCR and NT_PPC_HASHKEYR from Linux 6.5 to elf.hJoseph Myers2023-10-191-0/+2
| | | | | | | Linux 6.5 adds constants NT_PPC_DEXCR and NT_PPC_HASHKEYR. Add these to glibc's elf.h. Tested for x86_64.
* s390: Fix undefined behaviour in feenableexcept, fedisableexcept [BZ #30960]Stefan Liebler2023-10-192-2/+4
| | | | | | | | | | | | | | | | | If feenableexcept or fedisableexcept gets excepts=FE_INVALID=0x80 as input, we have a signed left shift: 0x80 << 24 which is not representable as int and thus is undefined behaviour according to C standard. This patch casts excepts as unsigned int before shifting, which is defined. For me, the observed undefined behaviour is that the shift is done with "unsigned"-instructions, which is exactly what we want. Furthermore, I don't get any exception-flags. After the fix, the code is using the same instruction sequence as before.
* elf: Do not print the cache entry if --inhibit-cache is usedAdhemerval Zanella2023-10-181-1/+2
| | | | | So --help informs the correct shared library search path. Reviewed-by: Florian Weimer <fweimer@redhat.com>
* Revert "elf: Always call destructors in reverse constructor order (bug 30785)"Florian Weimer2023-10-187-179/+173
| | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 6985865bc3ad5b23147ee73466583dd7fdf65892. Reason for revert: The commit changes the order of ELF destructor calls too much relative to what applications expect or can handle. In particular, during process exit and _dl_fini, after the revert commit, we no longer call the destructors of the main program first; that only happens after some dlopen'ed objects have been destructed. This robs applications of an opportunity to influence destructor order by calling dlclose explicitly from the main program's ELF destructors. A couple of different approaches involving reverse constructor order were tried, and none of them worked really well. It seems we need to keep the dependency sorting in _dl_fini. There is also an ambiguity regarding nested dlopen calls from ELF constructors: Should those destructors run before or after the object that called dlopen? Commit 6985865bc3ad5b2314 used reverse order of the start of ELF constructor calls for destructors, but arguably using completion of constructors is more correct. However, that alone is not sufficient to address application compatibility issues (it does not change _dl_fini ordering at all).
* Revert "elf: Fix compile error with -DNDEBUG [BZ #18755]"Florian Weimer2023-10-181-1/+1
| | | | | | This reverts commit 964d15a007d7fb1258f2ad7c8cf4afcfb9a65719. Reason for revert: Conflicts with revert of commit 6985865bc3ad5b23147.
* Add strlcat/wcslcat testcase.Sunil K Pandey2023-10-174-0/+423
| | | | | | | | This patch implements comprehensive tests for strlcat/wcslcat functions. Tests are mostly derived from strncat test suites and modified to incorporate strlcat/wcslcat specifications. Reviewed-by: DJ Delorie <dj@redhat.com>
* Add strlcpy/wcslcpy testcaseSunil K Pandey2023-10-174-0/+344
| | | | | | | | This patch implements comprehensive tests for strlcpy/wcslcpy functions. Tests are mostly derived from strncpy test suites and modified to incorporate strlcpy/wcslcpy specifications. Reviewed-by: DJ Delorie <dj@redhat.com>
* Add LE DSCP code point from RFC-8622.Bruno Victal2023-10-171-0/+5
| | | | | Signed-off-by: Bruno Victal <mirai@makinata.eu> Reviewed-by: Florian Weimer <fweimer@redhat.com>
* Add HWCAP2_MOPS from Linux 6.5 to AArch64 bits/hwcap.hJoseph Myers2023-10-171-0/+1
| | | | | | | Linux 6.5 adds a new AArch64 HWCAP2 value, HWCAP2_MOPS. Add it to glibc's bits/hwcap.h. Tested with build-many-glibcs.py for aarch64-linux-gnu.
* Add SCM_SECURITY, SCM_PIDFD to bits/socket.hJoseph Myers2023-10-161-0/+4
| | | | | | | | | | | | Linux 6.5 adds a constant SCM_PIDFD (recall that the non-uapi linux/socket.h, where this constant is added, is in fact a header providing many constants that are part of the kernel/userspace interface). This shows up that SCM_SECURITY, from the same set of definitions and added in Linux 2.6.17, is also missing from glibc, although glibc has the first two constants from this set, SCM_RIGHTS and SCM_CREDENTIALS; add both missing constants to glibc. Tested for x86_64.
* Add AT_HANDLE_FID from Linux 6.5 to bits/fcntl-linux.hJoseph Myers2023-10-161-0/+11
| | | | | | | | | Linux 6.5 adds a constant AT_HANDLE_FID; add it to glibc. Because this is a flag for the function name_to_handle_at declared in bits/fcntl-linux.h, put the flag there rather than alongside other AT_* flags in (OS-independent) fcntl.h. Tested for x86_64.
* Avoid maybe-uninitialized warning in __kernel_rem_pio2Andreas Schwab2023-10-161-9/+5
| | | | | | | | | | | | | | With GCC 14 on 32-bit x86 the compiler emits a maybe-uninitialized warning: ../sysdeps/ieee754/dbl-64/k_rem_pio2.c: In function '__kernel_rem_pio2': ../sysdeps/ieee754/dbl-64/k_rem_pio2.c:364:20: error: 'fq' may be used uninitialized [-Werror=maybe-uninitialized] 364 | y[0] = fq[0]; y[1] = fq[1]; y[2] = fw; | ~~^~~ This is similar to the warning that is suppressed in the other branch of the switch. Help the compiler knowing that the variable is always initialized, which also makes the suppression obsolete.
* Fix WAIT_FOR_DEBUGGER for container tests.Stefan Liebler2023-10-161-8/+6
| | | | | | | | | | | | | | | | For container tests, gdb needs to set the sysroot to the corresponding testroot.root directory. The assumption was that PIDs < 3 means that we are running within a container. Starting with commit 2fe64148a81f0d78050c302f34a6853d21f7cae4 "Allow for unpriviledged nested containers", the default is to use the PID namespace of the parent. Thus support_test_main.c does not recognize our container anymore. This patch now assumes that we are running inside a container if test-container.c has set PID_OUTSIDE_CONTAINER and always uses this PID independent of having a new PID namespace or not. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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