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* linux: Require /dev/shm as the shared memory file systemFlorian Weimer2021-02-081-2/+8
| | | | | | | | | | | | | | | | | | | | | Previously, glibc would pick an arbitrary tmpfs file system from /proc/mounts if /dev/shm was not available. This could lead to an unsuitable file system being picked for the backing storage for shm_open, sem_open, and related functions. This patch introduces a new function, __shm_get_name, which builds the file name under the appropriate (now hard-coded) directory. It is called from the various shm_* and sem_* function. Unlike the SHM_GET_NAME macro it replaces, the callers handle the return values and errno updates. shm-directory.c is moved directly into the posix subdirectory because it can be implemented directly using POSIX functionality. It resides in libc because it is needed by both librt and nptl/htl. In the sem_open implementation, tmpfname is initialized directly from a string constant. This happens to remove one alloca call. Checked on x86_64-linux-gnu.
* Update copyright dates with scripts/update-copyrightsPaul Eggert2021-01-021-1/+1
| | | | | | | | | | | | | | | | I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
* Update copyright dates with scripts/update-copyrights.Joseph Myers2020-01-011-1/+1
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* Prefer https to http for gnu.org and fsf.org URLsPaul Eggert2019-09-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Also, change sources.redhat.com to sourceware.org. This patch was automatically generated by running the following shell script, which uses GNU sed, and which avoids modifying files imported from upstream: sed -ri ' s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g ' \ $(find $(git ls-files) -prune -type f \ ! -name '*.po' \ ! -name 'ChangeLog*' \ ! -path COPYING ! -path COPYING.LIB \ ! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \ ! -path manual/texinfo.tex ! -path scripts/config.guess \ ! -path scripts/config.sub ! -path scripts/install-sh \ ! -path scripts/mkinstalldirs ! -path scripts/move-if-change \ ! -path INSTALL ! -path locale/programs/charmap-kw.h \ ! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \ ! '(' -name configure \ -execdir test -f configure.ac -o -f configure.in ';' ')' \ ! '(' -name preconfigure \ -execdir test -f preconfigure.ac ';' ')' \ -print) and then by running 'make dist-prepare' to regenerate files built from the altered files, and then executing the following to cleanup: chmod a+x sysdeps/unix/sysv/linux/riscv/configure # Omit irrelevant whitespace and comment-only changes, # perhaps from a slightly-different Autoconf version. git checkout -f \ sysdeps/csky/configure \ sysdeps/hppa/configure \ sysdeps/riscv/configure \ sysdeps/unix/sysv/linux/csky/configure # Omit changes that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines git checkout -f \ sysdeps/powerpc/powerpc64/ppc-mcount.S \ sysdeps/unix/sysv/linux/s390/s390-64/syscall.S # Omit change that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
* Update copyright dates with scripts/update-copyrights.Joseph Myers2019-01-011-1/+1
| | | | | | | * All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
* Update copyright dates with scripts/update-copyrights.Joseph Myers2018-01-011-1/+1
| | | | | | | * All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
* Add missing include for pthread_setcancelstateSamuel Thibault2017-08-031-0/+1
| | | | * sysdeps/posix/shm_open.c: Include <pthread.h>.
* Assume that O_CLOEXEC is always defined and worksFlorian Weimer2017-04-181-27/+1
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* Assume that O_NOFOLLOW is always definedFlorian Weimer2017-04-131-2/+0
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* Update copyright dates with scripts/update-copyrights.Joseph Myers2017-01-011-1/+1
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* rt: Set shm_open as a non cancellation point (BZ #18243)Adhemerval Zanella2016-09-151-0/+7
| | | | | | | | | | | | | This patch changes shm_open to not act as a cancellation point. Cancellation is disable at start and reenable in function exit. It fixes BZ #18243. Tested on x86_64 and i686. [BZ #18243] * rt/Makefile (test): Add tst-shm-cancel. * rt/tst-shm-cancel.c: New file. * sysdeps/posix/shm_open.c: Disable asynchronous cancellation.
* Update copyright dates with scripts/update-copyrights.Joseph Myers2016-01-041-1/+1
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* Update copyright dates with scripts/update-copyrights.Joseph Myers2015-01-021-1/+1
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* NPTL: Refactor named semaphore code to use shm-directory.hRoland McGrath2014-12-121-1/+1
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* Refactor shm_{open,unlink} code to separate Linux-specific directory choice ↵Roland McGrath2014-12-111-31/+23
| | | | from POSIX-generic code.
* Update copyright notices with scripts/update-copyrightsAllan McRae2014-01-011-1/+1
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* Update copyright notices with scripts/update-copyrights.Joseph Myers2013-01-021-1/+1
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* Replace FSF snail mail address with URLs.Paul Eggert2012-02-091-3/+2
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* * sysdeps/alpha/fpu/s_cacosf.c: Don't use sysdeps/generic/.Roland McGrath2005-12-151-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * sysdeps/alpha/fpu/s_cacoshf.c: Likewise. * sysdeps/alpha/fpu/s_casinf.c: Likewise. * sysdeps/alpha/fpu/s_casinhf.c: Likewise. * sysdeps/alpha/fpu/s_catanf.c: Likewise. * sysdeps/alpha/fpu/s_catanhf.c: Likewise. * sysdeps/alpha/fpu/s_ccosf.c: Likewise. * sysdeps/alpha/fpu/s_ccoshf.c: Likewise. * sysdeps/alpha/fpu/s_cexpf.c: Likewise. * sysdeps/alpha/fpu/s_clog10f.c: Likewise. * sysdeps/alpha/fpu/s_clogf.c: Likewise. * sysdeps/alpha/fpu/s_cpowf.c: Likewise. * sysdeps/alpha/fpu/s_cprojf.c: Likewise. * sysdeps/alpha/fpu/s_csinf.c: Likewise. * sysdeps/alpha/fpu/s_csinhf.c: Likewise. * sysdeps/alpha/fpu/s_csqrtf.c: Likewise. * sysdeps/alpha/fpu/s_ctanf.c: Likewise. * sysdeps/alpha/fpu/s_ctanhf.c: Likewise. * sysdeps/alpha/libc-tls.c: Likewise. * sysdeps/gnu/glob64.c: Likewise. * sysdeps/gnu/updwtmp.c: Likewise. * sysdeps/gnu/utmp_file.c: Likewise. * sysdeps/i386/bzero.c: Likewise. * sysdeps/i386/ffs.c: Likewise. * sysdeps/i386/i686/ffs.c: Likewise. * sysdeps/i386/memset.c: Likewise. * sysdeps/ia64/fpu/printf_fphex.c: Likewise. * sysdeps/ia64/libc-tls.c: Likewise. * sysdeps/ieee754/ldbl-128/printf_fphex.c: Likewise. * sysdeps/m68k/ffs.c: Likewise. * sysdeps/mach/hurd/getdents.c: Likewise. * sysdeps/mach/hurd/init-posix.c: Likewise. * sysdeps/mach/msync.c: Likewise. * sysdeps/mips/libc-tls.c: Likewise. * sysdeps/posix/profil.c: Likewise. * sysdeps/posix/shm_open.c: Likewise. * sysdeps/posix/shm_unlink.c: Likewise. * sysdeps/posix/sprofil.c: Likewise. * sysdeps/powerpc/ffs.c: Likewise. * sysdeps/rs6000/ffs.c: Likewise. * sysdeps/s390/libc-tls.c: Likewise. * sysdeps/unix/sysv/linux/aio_sigqueue.c: Likewise. * sysdeps/unix/sysv/linux/alpha/glob.c: Likewise. * sysdeps/unix/sysv/linux/alpha/wordexp.c: Likewise. * sysdeps/unix/sysv/linux/ftruncate64.c: Likewise. * sysdeps/unix/sysv/linux/gai_sigqueue.c: Likewise. * sysdeps/unix/sysv/linux/i386/getmsg.c: Likewise. * sysdeps/unix/sysv/linux/i386/getresgid.c: Likewise. * sysdeps/unix/sysv/linux/i386/getresuid.c: Likewise. * sysdeps/unix/sysv/linux/i386/lchown.c: Likewise. * sysdeps/unix/sysv/linux/i386/putmsg.c: Likewise. * sysdeps/unix/sysv/linux/i386/readelflib.c: Likewise. * sysdeps/unix/sysv/linux/i386/setresgid.c: Likewise. * sysdeps/unix/sysv/linux/i386/setresuid.c: Likewise. * sysdeps/unix/sysv/linux/ia64/readelflib.c: Likewise. * sysdeps/unix/sysv/linux/mips/ftruncate64.c: Likewise. * sysdeps/unix/sysv/linux/mips/readelflib.c: Likewise. * sysdeps/unix/sysv/linux/mips/truncate64.c: Likewise. * sysdeps/unix/sysv/linux/mq_close.c: Likewise. * sysdeps/unix/sysv/linux/mq_getattr.c: Likewise. * sysdeps/unix/sysv/linux/mq_notify.c: Likewise. * sysdeps/unix/sysv/linux/mq_open.c: Likewise. * sysdeps/unix/sysv/linux/mq_receive.c: Likewise. * sysdeps/unix/sysv/linux/mq_send.c: Likewise. * sysdeps/unix/sysv/linux/mq_unlink.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/truncate64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/readelflib.c: Likewise. * sysdeps/unix/sysv/linux/s390/readelflib.c: Likewise. * sysdeps/unix/sysv/linux/sched_getaffinity.c: Likewise. * sysdeps/unix/sysv/linux/sched_setaffinity.c: Likewise. * sysdeps/unix/sysv/linux/sigqueue.c: Likewise. * sysdeps/unix/sysv/linux/sigstack.c: Likewise. * sysdeps/unix/sysv/linux/sigtimedwait.c: Likewise. * sysdeps/unix/sysv/linux/sigwaitinfo.c: Likewise. * sysdeps/unix/sysv/linux/sparc/readelflib.c: Likewise. * sysdeps/unix/sysv/linux/truncate64.c: Likewise. * sysdeps/unix/sysv/linux/vfork.c: Likewise. * sysdeps/unix/sysv/linux/x86_64/readelflib.c: Likewise.
* (CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.Ulrich Drepper2004-12-221-2/+2
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* 2.5-18.1Jakub Jelinek2007-07-121-2/+2
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* * sysdeps/posix/shm_open.c (SHMDIR): /var/run/shm -> /dev/shmRoland McGrath2002-03-241-2/+2
| | | | * sysdeps/posix/shm_unlink.c: Likewise.
* Update to LGPL v2.1.Andreas Jaeger2001-07-061-8/+8
| | | | | | | | | | | | | | 2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
* * sysdeps/mach/hurd/fork.c (LOSE): Put `goto lose' in dead codeRoland McGrath2001-06-141-0/+85
so the label is not considered unused. * sysdeps/mach/hurd/pwrite64.c: New file. * sysdeps/mach/hurd/pread64.c: New file. * sysdeps/mach/hurd/pread.c (__libc_pread): Define this name, with __pread as an alias. * sysdeps/mach/hurd/pwrite.c (__libc_pwrite): Define this name, with __pwrite as an alias. Implement POSIX "shared memory objects" as regular files residing in the /var/run/shm/ directory. This works on any system that supports _POSIX_MAPPED_FILES, to make it also support _POSIX_SHARED_MEMORY_OBJECTS. * sysdeps/posix/shm_open.c: New file. * sysdeps/posix/shm_unlink.c: New file. * sysdeps/mach/hurd/bits/posix_opt.h (_POSIX_SHARED_MEMORY_OBJECTS): Define it. * rt/aio_notify.c (__aio_notify_only) [! _POSIX_REALTIME_SIGNALS]: Use raise instead of __aio_sigqueue.
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