With fortification enabled, system calls return result needs to be checked,
has it gets the __wur macro enabled.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
2002-08-27 Ulrich Drepper <drepper@redhat.com>
* sysdeps/arm/Dist: Add bits/link.h.
* sunrpc/Makefile: Distribute thrsvc.
* stdio-common/Makefile: Remove more left-overs from old stdio.
* include/linewrap.h: Removed.
* libio/bug-mmap-fflush.c: Rewrite to not touch source directory.
* intl/Makefile (distribute): Add plural-eval.c.
* stdio-common/Makefile (headers): Remove bits/stdio_lim.h. This
file isn't distributed. Add special rules to install bits/stdio_lim.h.
* Make-dist: Remove traces of old stdio.
* Makeconfig: Likewise.
* locale/Makefile (localedef-aux): New variable. Only md5
assigned to it. These files are not ddistributed in this directory.
* sysdeps/unix/sysv/linux/s390/Dist: Add sys/procfs.h.
* sysdeps/unix/sysv/linux/s390/s390-64/Dist: Remove sys/procfs.h.
* sysdeps/unix/sysv/linux/s390/s390-32/Dist: Likewise.
* sysdeps/unix/sysv/linux/Dist: Remove sys/sendfile.h.
(_IO_file_jumps_mmap): Use it.
(_IO_file_underflow_mmap): Rewritten. If after EOF or fflush,
repeat the stat check and resize the mapped buffer as necessary.
2002-07-31 Roland McGrath <roland@frob.com>
* libio/fileops.c (decide_maybe_mmap): New static function.
Code taken from libio/iofopen.c:__fopen_maybe_mmap to try to
mmap the file contents. Then switch the jump tables to the mmap
tables if it worked, or the vanilla file tables if not.
(_IO_file_underflow_maybe_mmap): New function.
(_IO_file_seekoff_maybe_mmap): New function.
(_IO_file_xsgetn_maybe_mmap): New function.
(_IO_file_jumps_maybe_mmap): New variable, jump table using those.
* libio/libioP.h: Declare those.
* libio/wfileops.c (_IO_wfile_underflow_maybe_mmap): New function.
(_IO_wfile_jumps_maybe_mmap): New variable, jump table using that.
* libio/iofopen.c (__fopen_maybe_mmap): Don't try to mmap here.
If the stream is read-only, set its jump tables to those new ones.
* libio/iofdopen.c (_IO_new_fdopen) [_G_HAVE_MMAP]: Set the initial
jump tables to the maybe_mmap ones, and don't call __fopen_maybe_mmap.
We need the tables set before _IO_file_attach.
* libio/tst-mmap-eofsync.c: New file.
* libio/tst-mmap-fflushsync.c: New file.
* libio/bug-mmap-fflush.c: New file.
* libio/tst-mmap2-eofsync.c: New file.
* libio/Makefile (tests): Add them.
* libio/wfileops.c (_IO_wfile_underflow_mmap): Don't set EOF bit when
_IO_file_underflow_mmap fails, it already set the appropriate bit.
