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Carlos O'Donell 032f225008 Files open O_WRONLY not supported in fallocate emulation. 
In the posix_fallocate description in the manual we list various
drawbacks with the emulation, including the fact that a file opened
with O_APPEND fails with EBADF. Similarly a file opened with O_WRONLY
fails with EBADF. We must be able to emulate a compare-and-swap via
pread/compare/pwrite in order to make the emulation as safe as possible.
It is not acceptable to ignore the read failure because it could result
in significant data loss across all of the blocks. There is no other way
to make this work without a true atomic CAS and SIGBUS handler (which
is looking more attractive as a way to remove the race condition).

This patch adds O_WRONLY to the manual as another bullet to clarify the
limits of the emulation.

Manual looks good in PDF.
2015-09-29 11:32:36 -04:00
..
examples Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
argp.texi * manual/argp.texi: Document MTASC-safety properties. 2014-01-29 05:24:32 -02:00
arith.texi Fix two spaces after sentence. 2014-02-26 23:27:38 +01:00
charset.texi Fix two spaces after sentence. 2014-02-26 23:27:38 +01:00
check-safety.sh Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
conf.texi * manual/conf.texi: Document MTASC-safety properties. 2014-01-29 05:26:47 -02:00
contrib.texi glibc 2.21 pre-release update. 2015-02-05 23:14:38 -05:00
creature.texi Remove _BSD_SOURCE and _SVID_SOURCE. 2014-02-11 23:40:07 +00:00
crypt.texi * manual/crypt.texi: Document MTASC-safety properties. 2014-01-29 05:27:54 -02:00
ctype.texi * manual/ctype.texi: Document MTASC-safety properties. 2014-01-31 23:14:14 -02:00
debug.texi * manual/debug.texi: Document MTASC-safety properties. 2014-01-30 18:50:57 -02:00
dir .. 2005-11-21 15:45:19 +00:00
errno.texi manual: complete example in error message documentation 2015-03-06 00:59:49 -05:00
fdl-1.3.texi BZ#13738: Switch manual to FDL 1.3. 2012-02-24 12:58:10 -08:00
filesys.texi Files open O_WRONLY not supported in fallocate emulation. 2015-09-29 11:32:36 -04:00
freemanuals.texi Update to canonical freemanuals.texi file. 2013-09-24 14:06:56 -07:00
getopt.texi * manual/getopt.texi: Document MTASC-safety properties. 2014-01-31 23:16:56 -02:00
header.texi Use Texinfo macros to refer to the GNU C Library within the manual. 2012-02-28 14:44:20 +00:00
install-plain.texi BZ #15941: Fix INSTALL file regeneration failure with makeinfo 5.x 2013-12-05 09:58:20 +05:30
install.texi timezone: add a configure flag to disable program install 2015-09-18 19:39:46 -04:00
intro.texi manual: Sort overview listing by manual order. 2014-04-17 19:41:09 -04:00
io.texi Clean up glibc manual references to "GNU system" (bug 6911). 2012-03-08 01:27:38 +00:00
ipc.texi manual/ipc.texi: Fix AC-safety notes. 2014-04-08 17:12:15 -04:00
job.texi ctermid: return string literal, document MT-Safety pitfall 2014-11-21 02:16:02 -02:00
lang.texi * manual/lang.texi: Document MTASC-safety properties. 2014-01-31 23:21:48 -02:00
lgpl-2.1.texi Use canonical FSF .texi files for LGPL and FDL texts. 2011-06-06 16:16:55 -07:00
libc-texinfo.sh Add @detailmenu to subsection node listing 2013-02-24 21:05:58 +10:00
libc.texinfo Update copyright dates not handled by scripts/update-copyrights. 2015-01-02 16:54:45 +00:00
libcbook.texi initial import 1995-02-18 01:27:10 +00:00
libdl.texi * manual/libdl.texi: New. 2014-01-31 23:23:59 -02:00
libm-err-tab.pl Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
llio.texi Fix exponents in manual. 2015-08-20 09:43:50 +02:00
locale.texi manual: Update the locale documentation 2014-07-10 16:30:40 +02:00
macros.texi Fix exponents in manual. 2015-08-20 09:43:50 +02:00
maint.texi Fix two spaces after sentence. 2014-02-26 23:27:38 +01:00
Makefile manual: skip build when perl is unavailable 2015-08-21 17:10:59 -04:00
math.texi Refine documentation of libm exceptions goals. 2015-02-17 23:41:27 +00:00
memory.texi Fix two spaces after sentence. 2014-02-26 23:27:38 +01:00
message.texi Fix two spaces after sentence. 2014-02-26 23:27:38 +01:00
nss.texi manual: Remove frobnicate @pxref. 2013-02-20 13:30:23 -05:00
nsswitch.texi update from main archive 960814 1996-08-15 01:23:29 +00:00
pattern.texi Avoid SIGFPE in wordexp [BZ #18100] 2015-03-23 16:12:38 +01:00
pipe.texi * manual/pipe.texi: Document MTASC-safety properties. 2014-01-31 23:37:28 -02:00
platform.texi PowerPC: Extend Program Priority Register support 2015-08-19 17:43:26 -03:00
probes.texi Fix two spaces after sentence. 2014-02-26 23:27:38 +01:00
process.texi Add a new "Inter-Process Communication" chapter. 2014-02-26 11:05:09 -05:00
resource.texi Fix typo in manual. 2014-06-05 01:13:04 +02:00
search.texi manual: Correct guarantee about pointers compared by qsort() 2014-12-21 14:11:32 +01:00
setjmp.texi manual/setjmp.texi: Clarify setcontext and signal handlers text 2014-04-17 11:40:36 +01:00
signal.texi Fix crossreference to nonexistent node BSD Handler 2014-11-18 11:19:20 +01:00
socket.texi Fix two spaces after sentence. 2014-02-26 23:27:38 +01:00
startup.texi Remove _BSD_SOURCE and _SVID_SOURCE. 2014-02-11 23:40:07 +00:00
stdio-fp.c update from main archive 970225 1997-02-25 05:18:05 +00:00
stdio.texi Fix exponents in manual. 2015-08-20 09:43:50 +02:00
string.texi Fix typo in safety annotations in envz_remove 2015-05-20 02:36:13 +05:30
summary.awk Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
sysinfo.texi manual: fix addmntent's MT-Safety race annotation 2014-11-21 02:45:02 -02:00
syslog.texi * manual/syslog.texi: Document MTASC-safety properties. 2014-02-01 01:22:09 -02:00
terminal.texi * manual/terminal.texi: Document MTASC-safety properties. 2014-02-01 03:53:15 -02:00
texinfo.tex Update miscellaneous files from upstream sources. 2014-06-26 20:13:44 +00:00
texis.awk Correct close statement. 2001-05-18 13:01:32 +00:00
threads.texi Add header and standard information to threads.texi. 2014-02-28 18:30:22 -05:00
time.texi * manual/time.texi (TZ Variable): glibc no longer comes with tzdata. 2015-02-16 15:32:34 -08:00
tsort.awk Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
users.texi manual: cuserid is mtasurace if not passed a string 2014-11-21 02:15:09 -02:00
xtract-typefun.awk * manual/xtract-typefun.awk: Swallow [(){}*] from function names. 2003-11-12 00:50:03 +00:00