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* Modernize and fix doc’s “Date and Time” (BZ 31876)Paul Eggert2024-06-151-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | POSIX.1-2024 (now official) specifies tm_gmtoff and tm_zone. This is a good time to update the manual’s “Date and Time” chapter so I went through it, fixed some outdated stuff that had been in there for decades, and improved it to match POSIX.1-2024 better and to clarify some implementation-defined behavior. Glibc already conforms to POSIX.1-2024 in these matters, so this is merely a documentation change. * manual/examples/strftim.c: Use snprintf instead of now-deprecated function asctime. Check for localtime failure. Simplify by using puts instead of fputs. Prefer ‘buf, sizeof buf’ to less-obvious ‘buffer, SIZE’. * manual/examples/timespec_subtract.c: Modernize to use struct timespec not struct timeval, and rename from timeval_subtract.c. All uses changed. Check for overflow. Do not check for negative return value, which ought to be OK since negative time_t is OK. Use GNU indenting style. * manual/time.texi: Document CLOCKS_PER_SEC, TIME_UTC, timespec_get, timespec_getres, strftime_l. Document the storage lifetime of tm_zone and of tzname. Caution against use of tzname, timezone and daylight, saying that these variables have unspecified values when TZ is geographic. This is what glibc actually does (contrary to what the manual said before this patch), and POSIX is planned to say the same thing <https://austingroupbugs.net/view.php?id=1816>. Also say that directly accessing the variables is not thread-safe. Say that localtime_r and ctime_r don’t necessarily set time zone state. Similarly, in the tzset documentation, say that it is called by ctime, localtime, mktime, strftime, not that it is called by all time conversion functions that depend on the time zone. Say that tm_isdst is useful mostly just for mktime, and that other uses should prefer tm_gmtoff and tm_zone instead. Do not say that strftime ignores tm_gmtoff and tm_zone, because it doesn’t do that. Document what gmtime does to tm_gmtoff and tm_zone. Say that the asctime, asctime_r, ctime, and ctime_r are now deprecated and/or obsolescent, and that behavior is undefined if the year is < 1000 or > 9999. Document strftime before these now-obsolescent functions, so that readers see the useful function first. Coin the terms “geographical format” and “proleptic format” for the two main formats of TZ settings, to simplify exposition. Use this wording consistently. Update top-level proleptic syntax to match POSIX.1-2024, which glibc already implements. Document the angle-bracket quoted forms of time zone abbreviations in proleptic TZ. Say that time zone abbreviations can contain only ASCII alphanumerics, ‘+’, and ‘-’. Document what happens if the proleptic form specifies a DST abbreviation and offset but omits the rules. POSIX says this is implementation-defined so we need to document it. Although this documentation mentions ‘posixrules’ tersely, we need to rethink ‘posixrules’ since I think it stops working after 2038. Clarify wording about TZ settings beginning with ‘;’. Say that timegm is in ISO C (as of C23). Say that POSIX.1-2024 removed gettimeofday. Say that tm_gmtoff and tm_zone are extensions to ISO C, which is clearer than saying they are invisible in a struct ISO C enviroment, and gives us more wiggle room if we want to make them visible in strict ISO C, something that ISO C allows. Drop mention of old standards like POSIX.1c and POSIX.2-1992 in the text when the history is so old that it’s no longer useful in a general-purpose manual. Define Coordinated Universal Time (UTC), time zone, time zone ruleset, and POSIX Epoch, and use these phrases more consistently. Improve TZ examples to show more variety, and to reflect current practice and timestamps. Remove obsolete example about Argentina. Add an example for Ireland. Don’t rely on GCC extensions when explaining ctime_r. Do not say that difftime produces the mathematically correct result, since it might be inexact. For clock_t don’t say “as in the example above” when there is no such example, and don’t say that casting to double works “properly and consistently no matter what”, as it suffers from rounding and overflow. Don’t say broken-down time is not useful for calculations; it’s merely painful. Say that UTC is not defined before 1960. Rename Time Zone Functions to Time Zone State. All uses changed. Update Internet RFC 822 → 5322, 1305 → 5905. Drop specific years of ISO 8601 as they don’t matter. Minor style changes: @code{"..."} → @t{"..."} to avoid overquoting in info files, @code → @env for environment variables, Daylight Saving Time → daylight saving time, white space → whitespace, prime meridian → Prime Meridian.
* difftime can throw exceptionsPaul Eggert2024-06-041-3/+2
| | | | | | | | | | | | | difftime can signal an inexact conversion when converting to double, so it should not be marked as pure or nothrow (BZ 31808). Although we could do something more complicated, in which difftime is plain on modern platforms but const and nothrow on obsolescent platforms with 32-bit time_t, it hardly seems worth the trouble. difftime is used so rarely that it's not worth taking pains to optimize calls to it on obsolescent platforms. Reviewed-by: DJ Delorie <dj@redhat.com>
* difftime is pure, not constPaul Eggert2024-05-271-2/+2
| | | | | | | Because difftime's behavior depends on the floating-point environment, the function is pure, not const (BZ 31802). Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* time: Allow later version licensing.Carlos O'Donell2024-05-012-2/+2
| | | | | | | | | | | | | | | The FSF's Licensing and Compliance Lab noted a discrepancy in the licensing of several files in the glibc package. When timespect_get.c was impelemented the license did not include the standard ", or (at your option) any later version." text. Change the license in timespec_get.c and all copied files to match the expected license. This change was previously approved in principle by the FSF in RT ticket #1316403. And a similar instance was fixed in commit 46703efa02f6ddebce5ee54c92f7c32598de0de6.
* Always define __USE_TIME_BITS64 when 64 bit time_t is usedAdhemerval Zanella2024-04-025-21/+21
| | | | | | | | | | | | | | | | | | | | It was raised on libc-help [1] that some Linux kernel interfaces expect the libc to define __USE_TIME_BITS64 to indicate the time_t size for the kABI. Different than defined by the initial y2038 design document [2], the __USE_TIME_BITS64 is only defined for ABIs that support more than one time_t size (by defining the _TIME_BITS for each module). The 64 bit time_t redirects are now enabled using a different internal define (__USE_TIME64_REDIRECTS). There is no expected change in semantic or code generation. Checked on x86_64-linux-gnu, i686-linux-gnu, aarch64-linux-gnu, and arm-linux-gnueabi [1] https://sourceware.org/pipermail/libc-help/2024-January/006557.html [2] https://sourceware.org/glibc/wiki/Y2038ProofnessDesign Reviewed-by: DJ Delorie <dj@redhat.com>
* Refer to C23 in place of C2X in glibcJoseph Myers2024-02-011-4/+4
| | | | | | | | | | | | | | | WG14 decided to use the name C23 as the informal name of the next revision of the C standard (notwithstanding the publication date in 2024). Update references to C2X in glibc to use the C23 name. This is intended to update everything *except* where it involves renaming files (the changes involving renaming tests are intended to be done separately). In the case of the _ISOC2X_SOURCE feature test macro - the only user-visible interface involved - support for that macro is kept for backwards compatibility, while adding _ISOC23_SOURCE. Tested for x86_64.
* Update copyright dates with scripts/update-copyrightsPaul Eggert2024-01-0169-69/+69
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* Add checks for wday, yday and new date formatsMartin Coufal2023-06-301-14/+27
| | | | | | | tm time struct contains tm_wday and tm_yday that were previously not checked in this test. Also added new test cases for date formats containing %D, %R or %h. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* Call "CST" a time zone abbreviation, not a namePaul Eggert2023-06-224-7/+7
| | | | | | In documentation, call strings like "CST" time zone abbreviations, not time zone names. This terminology is more precise, and is what tzdb uses. A string like "CST" is ambiguous and does not fully name a time zone.
* tst-getdate: Improve testcase flexibility and add test.Joe Simmons-Talbott2023-06-121-20/+39
| | | | | | | | | The getdate testcases all expect successful results. Add support for negative testcases and testcases where a full date and time are not supplied by skipping the tm checks in the test. Add a testcase that would catch a use-after-free that was recently found. Reviewed-by: Arjun Shankar <arjun@redhat.com>
* Remove unused DATEMSK file for tst-getdateMartin Coufal2023-06-093-4/+1
| | | | | | | | tst-getdate used to rely on an in-tree datemsk file that was subsequently replaced by a file created during test execution. This commit removes the unused file and corresponding env-var and uses a more appropriate name for the temp file. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* time: Fix use-after-free in getdateArjun Shankar2023-06-061-2/+3
| | | | | | | | | getdate would free the buffer pointed to by the result of its call to strptime, then reference the same buffer later on -- leading to a use-after-free. This commit fixes that. Reported-by: Martin Coufal <mcoufal@redhat.com> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* time: Also check for EPERM while trying to clock_settimeAdhemerval Zanella2023-06-051-29/+30
| | | | | | | | | | | Container management default seccomp filter [1] only accepts clock_settime if process has also CAP_SYS_TIME. So also handle EPERM as well. Also adapt the test to libsupport and add a proper Copyright header. Checked on aarch64-linux-gnu. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* Fix all the remaining misspellings -- BZ 25337Paul Pluzhnikov2023-06-025-5/+5
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* tests: replace write by xwriteFrédéric Bérat2023-06-011-1/+3
| | | | | | | Using write without cheks leads to warn unused result when __wur is enabled. Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
* time: strftime_l: Avoid an unbounded alloca.Joe Simmons-Talbott2023-05-291-14/+25
| | | | | | | Avoid possible stack overflow by removing alloca() and converting to wide characters within the buffer. Suggested-by: Paul Eggert <eggert@cs.ucla.edu>
* time: Remove alloca() from getdateJoe Simmons-Talbott2023-05-051-18/+5
| | | | | | | Reduce the usage of alloca() to the bare minimum to avoid the potential for stack overflow. Use __strndup to simplify the code. Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
* time: Fix strftime(3) API regarding nullabilityAlejandro Colomar2023-03-311-1/+2
| | | | | | | | strftime(3) doesn't accept null pointers in any of the parameters. Cc: Paul Eggert <eggert@cs.ucla.edu> Signed-off-by: Alejandro Colomar <alx@kernel.org> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Move libc_freeres_ptrs and libc_subfreeres to hidden/weak functionsAdhemerval Zanella Netto2023-03-272-2/+6
| | | | | | | | | | | | | | | | | | | | They are both used by __libc_freeres to free all library malloc allocated resources to help tooling like mtrace or valgrind with memory leak tracking. The current scheme uses assembly markers and linker script entries to consolidate the free routine function pointers in the RELRO segment and to be freed buffers in BSS. This patch changes it to use specific free functions for libc_freeres_ptrs buffers and call the function pointer array directly with call_function_static_weak. It allows the removal of both the internal macros and the linker script sections. Checked on x86_64-linux-gnu, i686-linux-gnu, and aarch64-linux-gnu. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* Use 64-bit time_t interfaces in strftime and strptime (bug 30053)Andreas Schwab2023-02-075-2/+62
| | | | Both functions use time_t only internally, so the ABI is not affected.
* Update copyright dates with scripts/update-copyrightsJoseph Myers2023-01-0667-67/+67
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* time: Set daylight to 1 for matching DST/offset change (bug 29951)Florian Weimer2023-01-051-19/+22
| | | | | | | | | | The daylight variable is supposed to be set to 1 if DST is ever in use for the current time zone. But __tzfile_read used to do this: __daylight = rule_stdoff != rule_dstoff; This check can fail to set __daylight to 1 if the DST and non-DST offsets happen to be the same.
* time: Use 64 bit time on tzfileAdhemerval Zanella Netto2022-12-091-1/+1
| | | | | The tzfile_mtime is already compared to 64 bit time_t stat call. Reviewed-by: DJ Delorie <dj@redhat.com>
* configure: Use -Wno-ignored-attributes if compiler warns about multiple aliasesAdhemerval Zanella2022-11-011-0/+1
| | | | | | | | | clang emits an warning when a double alias redirection is used, to warn the the original symbol will be used even when weak definition is overridden. However, this is a common pattern for weak_alias, where multiple alias are set to same symbol. Reviewed-by: Fangrui Song <maskray@google.com>
* Use '%z' instead of '%Z' on printf functionsAdhemerval Zanella Netto2022-09-221-3/+3
| | | | | | | | The Z modifier is a nonstandard synonymn for z (that predates z itself) and compiler might issue an warning for in invalid conversion specifier. Reviewed-by: Florian Weimer <fweimer@redhat.com>
* mktime: improve heuristic for ca-1986 Indiana DSTPaul Eggert2022-09-081-8/+20
| | | | | | | | | | | | | | This patch syncs mktime.c from Gnulib, fixing a problem reported by Mark Krenz <https://bugs.gnu.org/48085>, and it should fix BZ#29035 too. * time/mktime.c (__mktime_internal): Be more generous about accepting arguments with the wrong value of tm_isdst, by falling back to a one-hour DST difference if we find no nearby DST that is unusual. This fixes a problem where "1986-04-28 00:00 EDT" was rejected when TZ="America/Indianapolis" because the nearest DST timestamp occurred in 1970, a temporal distance too great for the old heuristic. This also also narrows the search a bit, which is a minor performance win.
* Assume HAVE_TZSET in time/mktime.cPaul Eggert2022-09-081-1/+1
| | | | | This patch does not affect glibc. It affects only Gnulib-specific code and is for coordination with Gnulib.
* Declare timegm for ISO C2XJoseph Myers2022-06-061-5/+14
| | | | | | | | The next revision of the ISO C standard has added the timegm function (that was already supported in glibc). Update the feature test conditionals on its declaration in <time.h> accordingly. Tested for x86_64.
* locale: Remove private union from struct __locale_dataFlorian Weimer2022-05-233-54/+45
| | | | | | | This avoids an alias violation later. This commit also fixes an incorrect double-checked locking idiom in _nl_init_era_entries. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* locale: Remove cleanup function pointer from struct __localedataFlorian Weimer2022-05-233-4/+0
| | | | | | | We can call the cleanup functions directly from _nl_unload_locale if we pass the category to it. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* clock_settime/clock_gettime: Use __nonnull to avoid null pointerXiaoming Ni2022-05-051-4/+7
| | | | | | | | | | | | | clock_settime() clock_settime64() clock_gettime() clock_gettime64() Add __nonnull((2)) to avoid null pointer access. Link: https://sourceware.org/bugzilla/show_bug.cgi?id=27662 Link: https://sourceware.org/bugzilla/show_bug.cgi?id=29084 Signed-off-by: Xiaoming Ni <nixiaoming@huawei.com> Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
* Update copyright dates with scripts/update-copyrightsPaul Eggert2022-01-0167-67/+67
| | | | | | | | | | | | | | | | | | | | | | | I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 7061 files FOO. I then removed trailing white space from math/tgmath.h, support/tst-support-open-dev-null-range.c, and sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following obscure pre-commit check failure diagnostics from Savannah. I don't know why I run into these diagnostics whereas others evidently do not. remote: *** 912-#endif remote: *** 913: remote: *** 914- remote: *** error: lines with trailing whitespace found ... remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
* timezone: handle truncated timezones from tzcode-2021d and later (BZ #28707)Hans-Peter Nilsson2021-12-301-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When using a timezone file with a truncated starting time, generated by the zic in IANA tzcode-2021d a.k.a. tzlib-2021d (also in tzlib-2021e; current as of this writing), glibc asserts in __tzfile_read (on e.g. tzset() for this file) and you may find lines matching "tzfile.c:435: __tzfile_read: Assertion `num_types == 1' failed" in your syslog. One example of such a file is the tzfile for Asuncion generated by tzlib-2021e as follows, using the tzlib-2021e zic: "zic -d DEST -r @1546300800 -L /dev/null -b slim SOURCE/southamerica". Note that in its type 2 header, it has two entries in its "time-types" array (types), but only one entry in its "transition types" array (type_idxs). This is valid and expected already in the published RFC8536, and not even frowned upon: "Local time for timestamps before the first transition is specified by the first time type (time type 0)" ... "every nonzero local time type index SHOULD appear at least once in the transition type array". Note the "nonzero ... index". Until the 2021d zic, index 0 has been shared by the first valid transition but with 2021d it's separate, set apart as a placeholder and only "implicitly" indexed. (A draft update of the RFC mandates that the entry at index 0 is a placeholder in this case, hence can no longer be shared.) * time/tzfile.c (__tzfile_read): Don't assert when no transitions are found. Co-authored-by: Christopher Wong <Christopher.Wong@axis.com>
* Fix subscript error with odd TZif file [BZ #28338]Paul Eggert2021-10-071-2/+1
| | | | | | | | * time/tzfile.c (__tzfile_compute): Fix unlikely off-by-one bug that accessed before start of an array when an oddball-but-valid TZif file was queried with an unusual time_t value. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* time: Ignore interval nanoseconds on tst-itimerAdhemerval Zanella2021-10-041-9/+10
| | | | | | | | | | | | | Running the test on a 4.4 kernel within KVM, the precision used on ITIMER_VIRTUAL and ITIMER_PROF seems to different than the one used for ITIMER_REAL (it seems the same used for CLOCK_REALTIME_COARSE and CLOCK_MONOTONIC_COARSE). I did not see it on other kernels, for instance 5.11 and 4.15. To avoid trying to guess the resolution used, do not check the nanosecond internal values for the specific timers. Checked on i686-linux-gnu with a 4.4 kernel.
* time: Fix compile error in itimer test affecting hurdStafford Horne2021-09-161-2/+3
| | | | | | | | | | | | | | | | | | | | | The recent change to use __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64 to avoid doing 64-bit checks on some platforms broke the test for hurd where __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64 is not defined. With error: tst-itimer.c: In function 'do_test': tst-itimer.c:103:11: error: '__KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64' undeclared (first use in this function) 103 | if (__KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ tst-itimer.c:103:11: note: each undeclared identifier is reported only once for each function it appears in Define a support helper to detect when setitimer and getitimer support 64-bit time_t. Fixes commit 6e8a0aac2f ("time: Fix overflow itimer tests on 32-bit systems"). Cc: Adhemerval Zanella <adhemerval.zanella@linaro.org> Cc: Joseph Myers <joseph@codesourcery.com>
* Remove "Contributed by" linesSiddhesh Poyarekar2021-09-036-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | We stopped adding "Contributed by" or similar lines in sources in 2012 in favour of git logs and keeping the Contributors section of the glibc manual up to date. Removing these lines makes the license header a bit more consistent across files and also removes the possibility of error in attribution when license blocks or files are copied across since the contributed-by lines don't actually reflect reality in those cases. Move all "Contributed by" and similar lines (Written by, Test by, etc.) into a new file CONTRIBUTED-BY to retain record of these contributions. These contributors are also mentioned in manual/contrib.texi, so we just maintain this additional record as a courtesy to the earlier developers. The following scripts were used to filter a list of files to edit in place and to clean up the CONTRIBUTED-BY file respectively. These were not added to the glibc sources because they're not expected to be of any use in future given that this is a one time task: https://gist.github.com/siddhesh/b5ecac94eabfd72ed2916d6d8157e7dc https://gist.github.com/siddhesh/15ea1f5e435ace9774f485030695ee02 Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* time: Fix overflow itimer tests on 32-bit systemsStafford Horne2021-08-151-2/+2
| | | | | | | | | | | | | | | | | | | | On the port of OpenRISC I am working on and it appears the rv32 port we have sets __TIMESIZE == 64 && __WORDSIZE == 32. This causes the size of time_t to be 8 bytes, but the tv_sec in the kernel is still 32-bit causing truncation. The truncations are unavoidable on these systems so skip the testing/failures by guarding with __KERNEL_OLD_TIMEVAL_MATCHES_TIMEVAL64. Also, futher in the tests and in other parts of code checking for time_t overflow does not work on 32-bit systems when time_t is 64-bit. As suggested by Adhemerval, update the in_time_t_range function to assume 32-bits by using int32_t. This also brings in the header for stdint.h so we can update other usages of __int32_t to int32_t as suggested by Adhemerval. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Linux: Cleanups after librt moveFlorian Weimer2021-06-281-6/+0
| | | | | | | | | | | | librt.so is no longer installed for PTHREAD_IN_LIBC, and tests are not linked against it. $(librt) is introduced globally for shared tests that need to be linked for both PTHREAD_IN_LIBC and !PTHREAD_IN_LIBC. GLIBC_PRIVATE symbols that were needed during the transition are removed again. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* linux: Only use 64-bit syscall if required for clock_nanosleepAdhemerval Zanella2021-06-222-15/+34
| | | | | | | | | | | For !__ASSUME_TIME64_SYSCALLS there is no need to issue a 64-bit syscall if the provided timeout fits in a 32-bit one. The 64-bit usage should be rare since the timeout is a relative one. Checked on i686-linux-gnu on a 4.15 kernel and on a 5.11 kernel (with and without --enable-kernel=5.1) and on x86_64-linux-gnu. Reviewed-by: Lukasz Majewski <lukma@denx.de>
* Use 64 bit time_t stat internallyAdhemerval Zanella2021-06-221-3/+3
| | | | | | | | | | For the legacy ABI with supports 32-bit time_t it calls the 64-bit time directly, since the LFS symbols calls the 64-bit time_t ones internally. Checked on i686-linux-gnu and x86_64-linux-gnu. Reviewed-by: Lukasz Majewski <lukma@denx.de>
* y2038: Add test coverageAdhemerval Zanella2021-06-1519-0/+60
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is enabled through a new rule, tests-y2038, which is built only when the ABI supports the comapt 64-bit time_t (defined by the header time64-compat.h, which also enables the creation of the symbol Version for Linux). It means the tests are not built for ABI which already provide default 64-bit time_t. The new rule already adds the required LFS and 64-bit time_t compiler flags. The current coverage is: * libc: - adjtime tst-adjtime-time64 - adjtimex tst-adjtimex-time64 - clock_adjtime tst-clock_adjtime-time64 - clock_getres tst-clock-time64, tst-cpuclock1-time64 - clock_gettime tst-clock-time64, tst-clock2-time64, tst-cpuclock1-time64 - clock_nanosleep tst-clock_nanosleep-time64, tst-cpuclock1-time64 - clock_settime tst-clock2-time64 - cnd_timedwait tst-cnd-timedwait-time64 - ctime tst-ctime-time64 - ctime_r tst-ctime-time64 - difftime tst-difftime-time64 - fstat tst-stat-time64 - fstatat tst-stat-time64 - futimens tst-futimens-time64 - futimes tst-futimes-time64 - futimesat tst-futimesat-time64 - fts_* tst-fts-time64 - getitimer tst-itimer-timer64 - getrusage - gettimeofday tst-clock_nanosleep-time64 - glob / globfree tst-gnuglob64-time64 - gmtime tst-gmtime-time64 - gmtime_r tst-gmtime-time64 - lstat tst-stat-time64 - localtime tst-y2039-time64 - localtime_t tst-y2039-time64 - lutimes tst-lutimes-time64 - mktime tst-mktime4-time64 - mq_timedreceive tst-mqueue{1248}-time64 - mq_timedsend tst-mqueue{1248}-time64 - msgctl test-sysvmsg-time64 - mtx_timedlock tst-mtx-timedlock-time64 - nanosleep tst-cpuclock{12}-time64, tst-mqueue8-time64, tst-clock-time64 - nftw / ftw ftwtest-time64 - ntp_adjtime tst-ntp_adjtime-time64 - ntp_gettime tst-ntp_gettime-time64 - ntp_gettimex tst-ntp_gettimex-time64 - ppoll tst-ppoll-time64 - pselect tst-pselect-time64 - pthread_clockjoin_np tst-join14-time64 - pthread_cond_clockwait tst-cond11-time64 - pthread_cond_timedwait tst-abstime-time64 - pthread_mutex_clocklock tst-abstime-time64 - pthread_mutex_timedlock tst-abstime-time64 - pthread_rwlock_clockrdlock tst-abstime-time64, tst-rwlock14-time64 - pthread_rwlock_clockwrlock tst-abstime-time64, tst-rwlock14-time64 - pthread_rwlock_timedrdlock tst-abstime-time64, tst-rwlock14-time64 - pthread_rwlock_timedwrlock tst-abstime-time64, tst-rwlock14-time64 - pthread_timedjoin_np tst-join14-time64 - recvmmsg tst-cancel4_2-time64 - sched_rr_get_interval tst-sched_rr_get_interval-time64 - select tst-select-time64 - sem_clockwait tst-sem5-time64 - sem_timedwait tst-sem5-time64 - semctl test-sysvsem-time64 - semtimedop test-sysvsem-time64 - setitimer tst-mqueue2-time64, tst-itimer-timer64 - settimeofday tst-settimeofday-time64 - shmctl test-sysvshm-time64 - sigtimedwait tst-sigtimedwait-time64 - stat tst-stat-time64 - thrd_sleep tst-thrd-sleep-time64 - time tst-mqueue{1248}-time64 - timegm tst-timegm-time64 - timer_gettime tst-timer4-time64 - timer_settime tst-timer4-time64 - timerfd_gettime tst-timerfd-time64 - timerfd_settime tst-timerfd-time64 - timespec_get tst-timespec_get-time64 - timespec_getres tst-timespec_getres-time64 - utime tst-utime-time64 - utimensat tst-utimensat-time64 - utimes tst-utimes-time64 - wait3 tst-wait3-time64 - wait4 tst-wait4-time64 * librt: - aio_suspend tst-aio6-time64 - mq_timedreceive tst-mqueue{1248}-time64 - mq_timedsend tst-mqueue{1248}-time64 - timer_gettime tst-timer4-time64 - timer_settime tst-timer4-time64 * libanl: - gai_suspend Reviewed-by: Lukasz Majewski <lukma@denx.de> Reviewed-by: Carlos O'Donell <carlos@redhat.com> Tested-by: Carlos O'Donell <carlos@redhat.com>
* y2038: Add support for 64-bit time on legacy ABIsAdhemerval Zanella2021-06-152-3/+206
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A new build flag, _TIME_BITS, enables the usage of the newer 64-bit time symbols for legacy ABI (where 32-bit time_t is default). The 64 bit time support is only enabled if LFS (_FILE_OFFSET_BITS=64) is also used. Different than LFS support, the y2038 symbols are added only for the required ABIs (armhf, csky, hppa, i386, m68k, microblaze, mips32, mips64-n32, nios2, powerpc32, sparc32, s390-32, and sh). The ABIs with 64-bit time support are unchanged, both for symbol and types redirection. On Linux the full 64-bit time support requires a minimum of kernel version v5.1. Otherwise, the 32-bit fallbacks are used and might results in error with overflow return code (EOVERFLOW). The i686-gnu does not yet support 64-bit time. This patch exports following rediretions to support 64-bit time: * libc: adjtime adjtimex clock_adjtime clock_getres clock_gettime clock_nanosleep clock_settime cnd_timedwait ctime ctime_r difftime fstat fstatat futimens futimes futimesat getitimer getrusage gettimeofday gmtime gmtime_r localtime localtime_r lstat_time lutimes mktime msgctl mtx_timedlock nanosleep nanosleep ntp_gettime ntp_gettimex ppoll pselec pselect pthread_clockjoin_np pthread_cond_clockwait pthread_cond_timedwait pthread_mutex_clocklock pthread_mutex_timedlock pthread_rwlock_clockrdlock pthread_rwlock_clockwrlock pthread_rwlock_timedrdlock pthread_rwlock_timedwrlock pthread_timedjoin_np recvmmsg sched_rr_get_interval select sem_clockwait semctl semtimedop sem_timedwait setitimer settimeofday shmctl sigtimedwait stat thrd_sleep time timegm timerfd_gettime timerfd_settime timespec_get utime utimensat utimes utimes wait3 wait4 * librt: aio_suspend mq_timedreceive mq_timedsend timer_gettime timer_settime * libanl: gai_suspend Reviewed-by: Lukasz Majewski <lukma@denx.de> Reviewed-by: Carlos O'Donell <carlos@redhat.com> Tested-by: Carlos O'Donell <carlos@redhat.com>
* time: Add 64-bit time support for getdateAdhemerval Zanella2021-06-152-22/+14
| | | | | | | | | | | | The getdate is basically a wrapper localtime and mktime. The 64-bit time support is done calling the 64-bit internal functions, there is no need to add a new symbol version. Checked on x86_64-linux-gnu and i686-linux-gnu. Reviewed-by: Lukasz Majewski <lukma@denx.de> Reviewed-by: Carlos O'Donell <carlos@redhat.com> Tested-by: Carlos O'Donell <carlos@redhat.com>
* y2038: Add __USE_TIME_BITS64 support for struct timespecAdhemerval Zanella2021-06-151-1/+6
| | | | | | | | The __USE_TIME_BITS64 is not defined internally yet. Reviewed-by: Lukasz Majewski <lukma@denx.de> Reviewed-by: Carlos O'Donell <carlos@redhat.com> Tested-by: Carlos O'Donell <carlos@redhat.com>
* y2038: Add __USE_TIME_BITS64 support for struct timevalAdhemerval Zanella2021-06-151-0/+5
| | | | | | | | The __USE_TIME_BITS64 is not defined internally yet. Reviewed-by: Lukasz Majewski <lukma@denx.de> Reviewed-by: Carlos O'Donell <carlos@redhat.com> Tested-by: Carlos O'Donell <carlos@redhat.com>
* y2038: Add __USE_TIME_BITS64 support for time_tAdhemerval Zanella2021-06-151-0/+4
| | | | | | | | The __USE_TIME_BITS64 is not defined internally yet. Reviewed-by: Lukasz Majewski <lukma@denx.de> Reviewed-by: Carlos O'Donell <carlos@redhat.com> Tested-by: Carlos O'Donell <carlos@redhat.com>
* Do not declare asctime_r and ctime_r for C2XJoseph Myers2021-05-181-2/+2
| | | | | | | | | | | | | | | | | ISO C2X added the asctime_r, ctime_r, gmtime_r and localtime_r functions from POSIX. It's now removed asctime_r and ctime_r again, reflecting that they are marked obsolescent in POSIX; update glibc's time.h accordingly. The same change that removed those two functions from C2X also marked asctime and ctime as deprecated (reflecting how POSIX shows them as obsolescent), i.e. using the [[deprecated]] attribute in the prototypes shown in C2X. It's less clear if we should explicitly deprecate those functions like that in the glibc headers; this patch does nothing regarding such a deprecation (there's no normative requirement from C2X showing the functions as deprecated). Tested for x86_64 and x86.
* Add C2X timespec_getresJoseph Myers2021-05-176-2/+96
| | | | | | | | | | | | | | | | | | | ISO C2X adds a timespec_getres function alongside the C11 timespec_get, with functionality similar to that of POSIX clock_getres (including allowing a NULL pointer to be passed to the function). Implement this function for glibc, similarly to the implementation of timespec_get. This includes a basic test like that of timespec_get, but no documentation in the manual, given that TIME_UTC and timespec_get aren't documented in the manual at all. The handling of 64-bit time follows that in timespec_get; people maintaining patch series for 64-bit time will need to update them accordingly (to export __timespec_getres64, redirect calls in time.h and run the test for _TIME_BITS=64). Tested for x86_64 and x86, and (previous version; only testcase differs) with build-many-glibcs.py.
* time: Add 64 bit tests for getdate / getdate_rAdhemerval Zanella2021-04-151-61/+92
| | | | | | | | The test is also converted to use libsupport. Checked on i686-linux-gnu and x86_64-linux-gnu. Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-11-02 20:56:06 +0000