Whenever getaddrinfo needed network interface information it used the
netlink interface to read the information every single time. The
problem is that this information can change at any time.
The patch implements monitoring of the network interfaces through
nscd. If no change is detected the previously read information can
be reused (which is the norm). This timestamp information is also
made available to other processes using the shared memory segment
between nscd and those processes.
nscd can clear caches when certain files change. The list of files
was hardcoded so far and worked for nss_files and nss_dns and those
modules which need no monitoring. nss_db, for instance, has its
own set of files to monitor. Now the NSS modules themselves can
request that certain files are monitored.
The getcwd syscall (so far?) can only handle path up to one page
in size. There is no limit about directory hierarchy depth, though,
and the POSIX getcwd is supposed to handle this. In that case fall
back to the generic getcwd.
Additionally, optimize the generic getcwd to use openat when possible
to change the asymptotic performance from O(N^2) to O(n).
The ntp_gettime implementation of NTP exports the tai field the kernel
now produces. This requires an ABI change since the ntptimeval structure
changed. Upstream kept the same name, there is nothing to do. This
patch changes the ntptimeval structure but keeps the old ntp_gettime
definition. A new ntp_gettimex function which is transparently invoked
through the old name is introduced. This has the advantage that even
object files can remain compatible. This wouldn't be the case if
symbol versioning would be used to overload the name ntp_gettime.
* sysdeps/unix/sysv/linux/fallocate64.c: New file.
* sysdeps/unix/sysv/linux/wordsize-64/fallocate64.c: New file.
* sysdeps/unix/sysv/linux/wordsize-64/fallocate.c: New file.
* sysdeps/unix/sysv/linux/i386/fallocate64.c: New file.
* sysdeps/unix/sysv/linux/i386/fallocate.c: New file.
* sysdeps/unix/sysv/linux/Versions: Export fallocate and fallocate64
for GLIBC_2.10.
* sysdeps/unix/sysv/linux/Makefile [subdir=io] (sysdep_routines):
Add fallocate and fallocate64.
* io/fcntl.h: Pretty printing.
fields.
* nscd/connections.c (inotify_fd): New variable.
(nscd_init): Try to open an inotify descriptor.
If successful, watch files for databases using inotify instead of
having prune threads stat the files.
(nscd_run_prune): Recognize clear_cache flag being set and call
prune_cache appropriately.
(main_loop_poll): Add inotify descriptor to wait set and handle the
reported changes.
(main_loop_epoll): Likewise.
* nscd/cache.c (prune_cache): Don't stat files for databases if
inotify is used.
* sysdeps/unix/sysv/linux/Makefile [subdir=nscd]
(CFLAGS-connections.c): Add -DHAVE_INOTIFY.
* sysdeps/unix/sysv/linux/open64_2.c: ...here. New file.
* sysdeps/unix/sysv/linux/Makefile [subdir=io] (sysdep_routines): Add
open64_2.
* sysdeps/unix/sysv/linux/ia64/syscalls.list: Add open and creat
entries.
* sysdeps/unix/sysv/linux/x86_64/syscalls.list: Likewise.
* sysdeps/wordsize-64/alphasort.c: New file.
* sysdeps/wordsize-64/alphasort64.c: New file.
* sysdeps/wordsize-64/fseeko.c: New file.
* sysdeps/wordsize-64/fseeko64.c: New file.
* sysdeps/wordsize-64/ftello.c: New file.
* sysdeps/wordsize-64/ftello64.c: New file.
* sysdeps/wordsize-64/ftw.c: New file.
* sysdeps/wordsize-64/ftw64.c: New file.
* sysdeps/wordsize-64/iofgetpos.c: New file.
* sysdeps/wordsize-64/iofgetpos64.c: New file.
* sysdeps/wordsize-64/iofopen.c: New file.
* sysdeps/wordsize-64/iofopen64.c: New file.
* sysdeps/wordsize-64/iofsetpos.c: New file.
* sysdeps/wordsize-64/iofsetpos64.c: New file.
* sysdeps/wordsize-64/lockf.c: New file.
* sysdeps/wordsize-64/lockf64.c: New file.
* sysdeps/wordsize-64/mkostemp.c: New file.
* sysdeps/wordsize-64/mkostemp64.c: New file.
* sysdeps/wordsize-64/mkstemp.c: New file.
* sysdeps/wordsize-64/mkstemp64.c: New file.
* sysdeps/wordsize-64/scandir.c: New file.
* sysdeps/wordsize-64/scandir64.c: New file.
* sysdeps/wordsize-64/tmpfile.c: New file.
* sysdeps/wordsize-64/tmpfile64.c: New file.
* sysdeps/wordsize-64/versionsort.c: New file.
* sysdeps/wordsize-64/versionsort64.c: New file.
* sysdeps/unix/sysv/linux/wordsize-64/aio_read.c: New file.
* sysdeps/unix/sysv/linux/wordsize-64/aio_read64.c: New file.
* sysdeps/unix/sysv/linux/wordsize-64/aio_write.c: New file.
* sysdeps/unix/sysv/linux/wordsize-64/aio_write64.c: New file.
* sysdeps/unix/sysv/linux/wordsize-64/creat64.c: New file.
* sysdeps/unix/sysv/linux/wordsize-64/getdirentries.c: New file.
* sysdeps/unix/sysv/linux/wordsize-64/getdirentries64.c: New file.
* sysdeps/unix/sysv/linux/wordsize-64/lio_listio.c: New file.
* sysdeps/unix/sysv/linux/wordsize-64/lio_listio64.c: New file.
* sysdeps/unix/sysv/linux/wordsize-64/open64.c: New file.
* sysdeps/unix/sysv/linux/wordsize-64/openat.c: New file.
* sysdeps/unix/sysv/linux/wordsize-64/openat64.c: New file.
* crypt/sha256-crypt.c: Fix a comment.
* crypt/sha512-crypt.c: Likewise.
* sysdeps/unix/sysv/linux/signalfd.c: New file.
* sysdeps/unix/sysv/linux/sys/signalfd.h: New file.
* sysdeps/unix/sysv/linux/Versions: Export signalfd for GLIBC_2.7.
* stdio-common/vfprintf.c (vfprintf): Don't shadow workstart variable,
reinitialize workend at the start of each do_positional format spec
loop, free workstart before do_positional loops.
(printf_unknown): Fix size of work_buffer.
* stdio-common/tst-sprintf.c (main): Add 3 new testcases.
* sysdeps/unix/sysv/linux/Makefile [subdir=posix] (tests): Add
tst-getcpu.
* include/link.h: Move l_version and l_nversion members around to
fill gaps.
* sysdeps/unix/sysv/linux/ia64/clone2.S: Check for NULL stakc
pointers to match other architectures.
* sysdeps/unix/sysv/linux/Makefile [subdirs=misc] (tests): Add
tst-clone.
* sysdeps/unix/sysv/linux/tst-clone.c: New file.
malloc'ed wbuffer which isn't freed in error conditions.
(struct shmid_ds): Use it for shm_nattch field.
2005-11-18 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/futimesat.c (futimesat): If FILE is NULL,
set access and modification times of the file referenced by FD.
* sysdeps/generic/futimesat.c (futimesat): Don't return EINVAL if
FILE is NULL. Don't check FD if FILE is absolute path.
2005-11-19 Ulrich Drepper <drepper@redhat.com>
* nscd/nscd_gethst_r.c (nscd_gethst_r): Avoid unnecesary read call
if there are no aliases.
* sysdeps/unix/sysv/linux/Makefile (CFLAGS-connections.c,
CFLAGS-pwdcache.c, CFLAGS-grpcache.c, CFLAGS-hstcache.c,
CFLAGS-aicache.c, CFLAGS-initgrcache.c): Add -DHAVE_SENDFILE.
* sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_SENDFILE):
Define.
* nscd/pwdcache.c [HAVE_SENDFILE]: Include <sys/sendfile.h> and
<kernel-features.h>.
[HAVE_SENDFILE] (cache_addpw): Use sendfile to transmit positive
result.
* nscd/grpcache.c: Likewise.
* nscd/hstcache.c: Likewise.
* nscd/aicache.c: Likewise.
* nscd/initgrcache.c: Likewise.
* nscd/connectionc.c: Likewise.
* nscd/gai.c: Define __no_netlink_support if NEED_NETLINK is
defined and __ASSUME_NETLINK_SUPPORT is zero.
* sysdeps/unix/sysv/linux/Makefile (CFLAGS-gai.c): Add
-DNEED_NETLINK.
2003-09-16 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/Dist: Remove internal_statvfs.c.
* sysdeps/unix/sysv/linux/Makefile [subdir=io] (sysdep_routines):
Add internal_statvfs.
* sysdeps/unix/sysv/linux/fstatvfs.c: Call __internal_statvfs
instead of including "internal_statvfs.c".
* sysdeps/unix/sysv/linux/statvfs.c: Likewise.
* sysdeps/unix/sysv/linux/internal_statvfs.c: Make it a real function.
Add code to avoid the stat calls on all the reported mount points
when we can determine mismatch in advance.
* sysdeps/unix/sysv/linux/linux_fsinfo.h: Add AUTOFS_SUPER_MAGIC and
USBDEVFS_SUPER_MAGIC.
2003-09-16 Jakub Jelinek <jakub@redhat.com>
* posix/Versions (sched_getaffinity, sched_setaffinity): Change
from GLIBC_2.3.2 to GLIBC_2.3.3 symbol version.
2003-09-16 Bruno Haible <bruno@clisp.org>
* intl/tst-gettext2.sh: Set GCONV_PATH and LOCPATH only after
invoking msgfmt, not before.
* sysdeps/generic/utmp_file.c: Use not-cancelable syscalls all
over the place. It would be allowed to have these fucntions as
cancellation points but the cleanup would be ugly and a lot of
work.
* sysdeps/generic/not-cancel.h (fcntl_not_cancel): Define.
* sysdeps/unix/sysv/linux/not-cancel.h (fcntl_not_cancel): Define.
* include/fcntl.h (__fcntl_nocancel): Declare.
* sysdeps/unix/sysv/linux/fcntl.c: New file.
* sysdeps/unix/sysv/linux/i386/fcntl.c (__libc_fcntl): Only enable
cancellation if absolutely needed.
(__fcntl_nocancel): Define.
* posix/unistd.h (gethostid): Remove __THROW. Clarify comment.
* sysdeps/unix/sysv/linux/Makefile (CFLAGS-gethostid.c): Add
-fexceptions.
* sysdeps/unix/sysv/linux/gethostid.c (gethostid): Use
extend_alloca.
* resolv/res_init.c (__res_nclose): Use close_not_cancel_no_status
instead of __close.
2003-08-15 Ulrich Drepper <drepper@redhat.com>
* io/Versions [GLIBC_2.3.3]: Add posix_fadvise64.
* io/fcntl.h (posix_fadvise64): Change type of third parameter to
off_t.
* sysdeps/unix/sysv/linux/posix_fadvise.c: Adjust definition.
* sysdeps/unix/make-syscalls.sh: Recognize V prefix to the parameter
description indicating the error value is returned, not -1.
* sysdeps/unix/sysv/linux/Makefile [subdir=io] (subdir_routines): Add
posix_fadvise64_64.
* sysdeps/unix/sysv/linux/kernel-features.h: Add definition of
__ASSUME_FADVISE64_64_SYSCALL.
* sysdeps/unix/sysv/linux/syscalls.list: Don't define madvise and
posix_madvise in one file. Have posix_madvise defined with error
value returned.
Define posix_fadvise64_64 entry. Add version info to posix_fadvise64
entry.
* sysdeps/unix/sysv/linux/alpha/syscalls.list: Define
posix_fadvise64_64 entry. Add version info to posix_fadvise64 entry.
* sysdeps/unix/sysv/linux/ia64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/x86_64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/i386/posix_fadvise.S: New file.
* sysdeps/unix/sysv/linux/i386/sysdep.h: Define PSEUDO_ERRVAL,
PSEUDO_END_ERRVAL, and ret_ERRVAL.
* sysdeps/unix/sysv/linux/ia64/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/x86_64/sysdep.h: Likewise.
* posix/Makefile (routines): Add posix_madvise.
* sysdeps/generic/madvise.c: Don't define posix_madvise.
* sysdeps/generic/posix_madvise.c: New file.
* sysdeps/unix/sysv/aix/posix_madvise.c: New file.
2003-07-25 Jakub Jelinek <jakub@redhat.com>
* sysdeps/unix/sysv/linux/a.out.h: Replace with i386 version.
Include bits/a.out.h.
* sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Add
bits/a.out.h.
* sysdeps/unix/sysv/linux/bits/a.out.h: New file.
* sysdeps/unix/sysv/linux/i386/bits/a.out.h: New file.
* sysdeps/unix/sysv/linux/m68k/bits/a.out.h: New file.
* sysdeps/unix/sysv/linux/x86_64/bits/a.out.h: New file.
* sysdeps/unix/sysv/linux/alpha/a.out.h: New file.
* sysdeps/unix/sysv/linux/alpha/bits/a.out.h: New file.
* sysdeps/unix/sysv/linux/sparc/a.out.h: New file.
* sysdeps/unix/sysv/linux/sparc/bits/a.out.h: New file.
* Makerules: Always use -MP together with -MD.
(sed-remove-dotot): Substitute $(..) also at start of line.
($(stdio_lim:h=st)): Use -MD instead of SUNPRO_DEPENDENCIES.
Generated defines with a single compiler call.
Use $(sed-remove-dotdot).
* mach/Makefile ($(objpfx)mach-syscalls.mk): Use -MD instead
of DEPENDENCIES_OUTPUT, and use $(sed-remove-objpfx).
* sysdeps/unix/sysv/linux/Makefile ($(objpfx)syscall-%.h):
Use -MD instead of SUNPRO_DEPENDENCIES, and use $(sed-remove-objpfx).
* sysdeps/unix/sysv/linux/mips/Makefile
($(objpfx)syscall-%.h): Likewise.
* sysdeps/unix/sysv/linux/i386/bp-thunks.h: Likewise.
* sysdeps/unix/sysv/linux/Makefile ($(objpfx)syscall-%.h):
Use $(make-target-directory).
* sysdeps/unix/Makefile ($(objpfx)stub-syscalls.c): Likewise.
* Makerules (compile-mkdep-flags): New variable, pass -MD -MF $@.d.
(compile-command.S): Don't use ifndef. Append $(compile-mkdep-flags).
(compile-command.s, compile-command.c): Likewise.
($(objpfx)%.d): All such pattern rules removed.
($(+sysdir_pfx)sysd-rules): Don't generate them.
($(common-objpfx)dummy.d): Target removed.
(make-dummy-dep): Variable removed.
(generate-md5): Likewise.
(%.d: %.dt): New pattern rule.
(+depfiles): Use $(wildcard) function to get just existing *.d files
and .d files for existing *.dt files.
(common-clean): Remove all *.d and *.dt files.
(before-compile): Add $(objpfx). when it doesn't exist,
regardless of $(no_deps).
* elf/rtld-Rules ($(objpfx)rtld-%.d): All such pattern rules removed.
(rtld-depfiles): Use .os.d instead of .d names.
Include existing *.d files and .d files for existing *.dt files.
* Makerules ($(common-objpfx)%.make): Protect with [! subdir].
Use -MD, -MT and -MF flags instead of SUNPRO_DEPENDENCIES variable.
* sysdeps/unix/Makefile ($(common-objpfx)s-%.d): Remove compat.h hack.
Do s-*.d includes only if we have some syscall routines in this subdir.
* include/libc-symbols.h (libc_freeres_ptr): Use %nobits instead of
@nobits. The former is accepted by gas on any ELF platform.
* sysdeps/unix/sysv/linux/Makefile: Remove db2 directory handling.
* malloc/Makefile (CFLAGS-malloc.c): Define DEFAULT_TOP_PAD to 128k.
* sysdeps/unix/sysv/linux/Makefile (CFLAGS-malloc.c): Add to, not
replace.
