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| author | Andrew Tridgell <tridge@samba.org> | 2005-07-25 04:03:01 +0000 |
|---|---|---|
| committer | Gerald (Jerry) Carter <jerry@samba.org> | 2007-10-10 13:30:01 -0500 |
| commit | f92c000fc903803e1c2817dd407974ec44390593 (patch) | |
| tree | d807a16484c93d45f463e5c23d1750a1c1ac5a08 /source4/lib/replace/repdir/config.m4 | |
| parent | fc9ffba41332b5755ede3683208ec989d30fdcd0 (diff) | |
| download | samba-f92c000fc903803e1c2817dd407974ec44390593.tar.gz samba-f92c000fc903803e1c2817dd407974ec44390593.tar.bz2 samba-f92c000fc903803e1c2817dd407974ec44390593.zip | |
r8746: replace opendir/readdir/telldir/seekdir/closedir on systems where they
are broken (apparently all BSD systems). This breakage leads to unlink
on files in an open directory causing a later seekdir to miss
files. The bug happens due to a block boundary bug in the BSD libc
implementation of these calls.
This replacement code also fixes a severe memory usage problem with
telldir that can cause closedir() to take an arbitrary amount of time.
I have reported the bug in readdir to Greg Lehey (a FreeBSD maintainer)
(This used to be commit e1bf7c4279fbc03a52497d24cea375e75059cba1)
Diffstat (limited to 'source4/lib/replace/repdir/config.m4')
| -rw-r--r-- | source4/lib/replace/repdir/config.m4 | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/source4/lib/replace/repdir/config.m4 b/source4/lib/replace/repdir/config.m4 new file mode 100644 index 0000000000..0ef40ad8cb --- /dev/null +++ b/source4/lib/replace/repdir/config.m4 @@ -0,0 +1,17 @@ +AC_CACHE_CHECK([for broken readdir],samba_cv_HAVE_BROKEN_READDIR,[ + AC_TRY_RUN([#include "${srcdir-.}/build/tests/os2_delete.c"], + samba_cv_HAVE_BROKEN_READDIR=no,samba_cv_HAVE_BROKEN_READDIR=yes)]) + +if test x"$samba_cv_HAVE_BROKEN_READDIR" = x"yes"; then +AC_CACHE_CHECK([for replacing readdir],samba_cv_REPLACE_READDIR,[ + AC_TRY_RUN([ +#include "${srcdir-.}/lib/replace/repdir/repdir.c" +#include "${srcdir-.}/build/tests/os2_delete.c"], + samba_cv_REPLACE_READDIR=yes,samba_cv_REPLACE_READDIR=no)]) +fi + +SMB_SUBSYSTEM_ENABLE(REPLACE_READDIR, NO) +if test x"$samba_cv_REPLACE_READDIR" = x"yes"; then + AC_DEFINE(REPLACE_READDIR,1,[replace readdir]) + SMB_SUBSYSTEM_ENABLE(REPLACE_READDIR, YES) +fi |