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secure stream related critical section against thread cancellation.
(_newlib_flockfile_exit): Ditto.
(_newlib_sfp_lock_end): Ditto.
(_newlib_sfp_lock_start): Ditto for the list of streams.
(_newlib_sfp_lock_exit): Ditto.
(_newlib_sfp_lock_end): Ditto.
Use aforementioned macros in place of _flockfile/_funlockfile
and __sfp_lock_acquire/__sfp_lock_release throughout the code.
* libc/stdio/fclose.c: Explicitely disable and re-enable thread
cancellation. Explain why.
* libc/stdio/freopen.c: Ditto.
* libc/stdio64/freopen64.c: Ditto.
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* libc/stdio/local.h: ...here.
* libc/stdio64/fdopen64.c: Update includes.
* libc/stdio64/fopen64.c: Likewise.
* libc/stdio64/freopen64.c: Likewise.
* libc/stdio64/fseeko64.c: Likewise.
* libc/stdio64/ftello64.c: Likewise.
* libc/stdio/findfp.c (std) [__LARGE64_FILES]: Open stdin, stdout,
and stderr with 64-bit offset.
* libc/stdio/fseek.c (_fseek_r): Avoid compile warning.
* libc/stdio/makebuf.c (__smakebuf_r): Likewise.
* libc/stdio/mktemp.c (_gettemp): Likewise.
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* libc/include/sys/_types.h: Include <sys/lock.h> and change
_flock_t to be of type _LOCK_RECURSIVE_T.
* libc/include/sys/reent.h: (_REENT_INIT): Reformat.
(_REENT_INIT_PTR): Ditto. Use memset where appropriate.
(_global_impure_ptr): New declaration.
(_GLOBAL_REENT): Change to be _global_impure_ptr.
* libc/include/sys/stdio.h: Include <sys/lock.h> and
<sys/reent.h>.
(_flockfile)[!_SINGLE_THREAD]: Add code for lock call.
(_funlockfile)[!SINGLE_THREAD]: Ditto.
* libc/reent/impure.c: Set _global_impure_ptr to _impure_ptr.
* libc/stdio/fclose.c: Remove casting of fp lock to
_LOCK_RECURSIVE_T.
* libc/stdio/findfp.c: Ditto.
* libc/stdio/fopen.c: Ditto.
* libc/stdio/freopen.c: Ditto.
* libc/stdio/vfprintf.c: Ditto.
* libc/stdio64/fopen64.c: Ditto.
* libc/stdlib/envlock.c: Add default stubs that use generic
locking code.
* libc/stdlib/mlock.c: Ditto.
Jeff Johnston <jjohnstn@redhat.com>
* libc/sys/linux/sys/_types.h (__flock_mutex_t): New subtype.
(_flock_t): Change to be a struct containing a single member
named mutex which is of type __flock_mutex_t.
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* libc/stdio/fclose.c (fclose): Protect file pointer list when
releasing a file.
* libc/stdio/fcloseall.c (_fcloseall_r): Close all files via
fwalk.
* libc/stdio/fdopen.c (_fdopen_r): Add calls to
_flockfile/_funlockfile.
* libc/stdio/findfp.c: Move __sfp_lock. Change __sfp_lock type
to recursive.
Change __lock_acquire/__lock_release calls for __sfp_lock to
__sfp_lock_acquire/__sfp_lock_release throughout.
(std): Make sure that file lock is only initialized once.
(__sfp): Move _file initialization. Initialize file lock.
(__sfp_lock_acquire): New function.
(__sfp_lock_release): Ditto.
(__fp_lock_all): Remove __sfp_lock_acquire call.
(__fp_unlock_all): Remove __sfp_lock_release call.
* libc/stdio/fopen.c (_fopen_r): Protect file pointer list.
Add calls to _flockfile/_funlockfile. Remove
__lock_init_recursive call.
* libc/stdio/freopen.c (_freopen_r): Protect file pointer list.
* libc/stdio/fwalk.c (__fwalk): New static function.
(_fwalk): Protect file pointer list. Use __fwalk to walk through
file pointers.
* libc/stdio/local.h: Add defines for
__sfp_lock_acquire/__sfp_lock_release when
single threaded. Add function prototypes otherwise.
* libc/stdio64/fdopen64.c (_fdopen64_r): Add calls to
_flockfile/_funlockfile.
* libc/stdio/fopen64.c (_fopen64_r): Protect file pointer list.
Add calls to _flockfile/_funlockfile. Remove
__lock_init_recursive call.
* libc/stdio/freopen64.c (_freopen64_r): Protect file pointer
list.
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* libc/include/sys/reent.h: Add _GLOBAL_REENT macro.
* libc/stdio: Globally remove/replace all references to fp->_data.
Replace with _REENT or _GLOBAL_REENT where appropriate.
* libc/stdio/asprintf.c: Ditto.
* libc/stdio/fclose.c: Ditto.
* libc/stdio/fvwrite.c: Ditto.
* libc/stdio/makebuf.c: Ditto.
* libc/stdio/refill.c: Ditto.
* libc/stdio/local.h: Ditto.
* libc/stdio/setvbuf.c: Ditto.
* libc/stdio/sscanf.c: Ditto.
* libc/stdio/stdio.c: Ditto.
* libc/stdio/ungetc.c: Ditto.
* libc/stdio/vfscanf.c: Ditto.
* libc/stdio/vsscanf.c: Ditto.
* libc/stdio/fopen.c: Ditto. Also use _fseek_r in _fopen_r.
* libc/stdio/vasprintf.c: Ditto. Also call _vfprintf_r directly.
* libc/stdio/vsnprintf.c: Ditto.
* libc/stdio/vsprintf.c: Ditto.
* libc/stdio/fcloseall.c(fcloseall): Use _GLOBAL_REENT macro
instead of _REENT to walk file list.
* libc/stdio/fflush.c: Ditto.
* libc/stdio/fgetpos.c: Add reentrant version and have regular
version call reentrant version with _REENT argument.
* libc/stdio/fsetpos.c: Ditto.
* libc/stdio/fseek.c: Ditto.
* libc/stdio/fseeko.c: Ditto.
* libc/stdio/ftell.c: Ditto.
* libc/stdio/ftello.c: Ditto.
* libc/stdio/freopen.c: Ditto.
* libc/stdio/findfp.c: Use _GLOBAL_REENT pointer when adding
new files to chain. Also use _GLOBAL_REENT pointer for
cleaning up.
* libc/stdio/fiprintf.c: Reformatted to minimize duplicate code.
* libc/stdio/siprintf.c: Ditto.
* libc/stdio/iprintf.c: Ditto.
* libc/stdio/fprintf.c: Ditto.
* libc/stdio/printf.c: Ditto.
* libc/stdio/snprintf.c: Call _vfprintf_r directly.
* libc/stdio/sprintf.c: Ditto.
* libc/stdio/vprintf.c: Ditto. Also add _REENT_ONLY check.
* libc/stdio/rewind.c: Call _fseek_r directly.
* libc/stdio/tmpfile.c: Call _fopen_r and _remove_r directly.
* libc/stdio/vfprintf.c (_VFPRINTF_R): Change _r routines to use
data pointer.
(get_arg): Add extra struct _reent pointer argument.
* libc/stdio64/fgetpos64.c: Add _r versions, remove any reference
to fp->_data.
* libc/stdio64/fopen64.c: Ditto.
* libc/stdio64/freopen64.c: Ditto.
* libc/stdio64/fsetpos64.c: Ditto.
* libc/stdio64/ftello64.c: Ditto.
* libc/stdio64/local64.h: Ditto.
* libc/stdio64/stdio64.c: Ditto.
* libc/stdio64/fseeko64.c: Ditto plus use _fstat_r instead of
_fstat64_r for the meantime.
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* libc/include/sys/_types.h (_flock_t): Added.
* libc/include/sys/lock.h (__lock_try_acquire): New interface.
(__lock_try_acquire_recursive): Ditto.
* libc/include/sys/reent.h (__sFILE, __sFILE64): Add new
_lock field.
* libc/stdio/findfp.c (std)[!__SINGLE_THREAD__]: Initialize _lock
field.
* libc/stdio/fopen.c (_fopen_r)[!__SINGLE_THREAD__]: Ditto.
* libc/stdio64/fopen64.c (_fopen64_r)[!__SINGLE_THREAD__]: Ditto.
* libc/sys/linux/include/time.h (struct timespec): Moved from
<sys/types.h> and added check for __need_timespec flag so type
can be defined by itself.
* libc/sys/linux/sys/_types.h (_flock_t): New type.
* libc/sys/linux/sys/types.h (struct timespec): Moved to
<time.h>.
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* Makefile.am(LIBC_OBJECTLISTS): Add STDIO64_OBJECTLIST.
* Makefile.in: Regenerated.
* acinclude.m4: Add support for --enable-newlib-elix-level option.
* aclocal.m4: Regenerated.
* configure: Ditto.
* configure.host: Add code to define _ELIX_LEVEL if
--enable-newlib-elix-level option is used.
* configure.in:
* libc/aclocal.m4: Regenerated.
* libc/configure: Ditto.
* libc/argz/Makefile.am: Add EL/IX level checking.
* libc/argz/Makefile.in: Regenerated.
* libc/argz/dummy.c: New file.
* libc/ctype/Makefile.am: Add EL/IX level checking.
* libc/ctype/Makefile.in: Regenerated.
* libc/locale/Makefile.am: Add EL/IX level checking.
* libc/locale/Makefile.in: Regenerated.
* libc/posix/Makefile.am: Add EL/IX level checking.
* libc/posix/Makefile.in: Regenerated.
* libc/posix/telldir.c: Add EL/IX level checking.
* libc/reent/Makefile.am: Ditto.
* libc/reent/fstat64r.c: Ditto.
* libc/reent/lseek64r.c: Ditto.
* libc/reent/open64r.c: Ditto.
* libc/reent/Makefile.in: Regenerated.
* libc/search/Makefile.am: Add EL/IX level checking.
* libc/search/Makefile.in: Regenerated.
* libc/stdio/Makefile.am: Add EL/IX level checking.
* libc/stdio/Makefile.in: Regenerated.
* libc/stdio64/Makefile.am: Add EL/IX level checking.
* libc/stdio64/Makefile.in: Regenerated.
* libc/stdio64/dummy.c: New file.
* libc/stdio64/fgetpos64.c: Fix so _LARGEFILE_64 macro is checked
after first include.
* libc/stdio64/fopen64.c: Ditto.
* libc/stdio64/freopen64.c: Ditto.
* libc/stdio64/fseeko64.c: Ditto.
* libc/stdio64/fsetpos64.c: Ditto.
* libc/stdio64/ftello64.c: Ditto.
* libc/stdio64/tmpfile64.c: Ditto.
* libc/stdlib/Makefile.am: Add EL/IX level checking.
* libc/stdlib/Makefile.in: Regenerated.
* libc/stdlib/mstats.c: Add EL/IX level checking.
* libc/string/Makefile.am: Ditto.
* libc/string/Makefile.in: Regenerated.
* libc/sys/linux/Makefile.am: Add EL/IX level checking.
* libc/sys/linux/Makefile.in: Regenerated.
* libc/sys/linux/aclocal.m4: Ditto.
* libc/sys/linux/configure: Ditto.
* libc/sys/linux/aio.c: Add EL/IX level checking.
* libc/sys/linux/ftok.c: Ditto.
* libc/sys/linux/getdate.c: Ditto.
* libc/sys/linux/ids.c: Ditto.
* libc/sys/linux/inode.c: Ditto.
* libc/sys/linux/io.c: Ditto.
* libc/sys/linux/process.c: Ditto.
* libc/sys/linux/resource.c: Ditto.
* libc/sys/linux/sched.c: Ditto.
* libc/sys/linux/sig.c: Ditto.
* libc/sys/linux/termios.c: Ditto.
* libc/sys/linux/wait.c: Ditto plus add __waitpid and
__libc___waitpid weak aliases.
* libc/sys/linux/machine/i386/syscall.h: Add new _base macros
that generate the code for a syscall, but do not create a
weak alias.
* libc/syscalls/Makefile.am: Add EL/IX level checking.
* libc/syscalls/Makefile.in: Regenerated.
* libc/time/tzset_r.c: Change to replace strdup with equivalent
functionality.
* libc/unix/Makefile.am: Add EL/IX level checking.
* libc/unix/Makefile.in: Regenerated.
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* configure.host(stdio64_dir): New setting that is used to
enable building of new stdio64 directory.
* libc/Makefile.am[HAVE_STDIO64_DIR]: Add support for
large files.
(stmp-stdio64,stdio64.texi): New targets to optionally add in
stdio64 info to info files.
* libc/Makefile.in: Regenerated.
* libc/configure: Ditto.
* libc/configure.in: Add configuration variables that are set
when stdio64 is selected as subdir in configure.host.
* libc/libc.texinfo: Add optional menu item for Stdio64, based
on whether STDIO64 flag is set or not.
* libc/sys.tex: Add optional stdio64 syscalls based on whether
STDIO64 flag is set or not.
* libc/include/reent.h[__LARGE64_FILES]: Add new stdio64
_r sycall routines.
* libc/include/stdio.h[__LARGE64_FILES]: Add new stdio64 prototypes.
(FILE): Typedef'd to __FILE instead of struct __sFILE directly.
(__SL64): New file flag indicating file is opened via fopen64.
* libc/include/sys/_types.h(_off64_t): Added.
* libc/include/sys/config.h: For x86-linux, define __LARGE64_FILES.
* libc/include/sys/reent.h(struct __sFILE64): New file structure
for 64-bit offset large file support.
(__FILE): New intermediate type either set to struct __sFILE64 or
struct __sFILE, depending on whether __LARGE64_FILES is set or not.
* libc/reent/Makefile.am[HAVE_STDIO64_DIR]: Add new files.
* libc/reent/Makefile.in: Regenerated.
* libc/reent/fstat64r.c: New file.
* libc/reent/lseek64r.c: Ditto.
* libc/reent/open64r.c: Ditto.
* libc/reent/reent.tex: Optionally add stdio64 reentrant syscalls
based on whether STDIO64 flag is set.
* libc/stdio/stdio.tex: Add blank line.
* libc/stdio64/Makefile.am: New file.
* libc/stdio64/Makefile.in: Ditto.
* libc/stdio64/fgetpos64.c: Ditto.
* libc/stdio64/fopen64.: Ditto.
* libc/stdio64/freopen64.c: Ditto.
* libc/stdio64/fseeko64.c: Ditto.
* libc/stdio64/fsetpos64.c: Ditto.
* libc/stdio64/ftello64.c: Ditto.
* libc/stdio64/local64.h: Ditto.
* libc/stdio64/stdio64.c: Ditto.
* libc/stdio64/stdio64.tex: Ditto.
* libc/stdio64/tmpfile64.c: Ditto.
* libc/sys/linux/io64.c: Add weak aliases for lseek64, fstat64, and
open64.
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