Commit Graph

903 Commits

Author SHA1 Message Date
Joseph Myers
7475aef5fa Document libm accuracy goals. 2013-11-28 22:31:03 +00:00
Joseph Myers
c5df760908 Document some libm error handling intents. 2013-11-28 16:52:36 +00:00
Ondřej Bílka
10ad46bc65 Consolidate valloc/pvalloc code.
To make malloc code more maintainable we make malloc and pvalloc share
logic with memalign.
2013-11-20 15:46:02 +01:00
Siddhesh Poyarekar
f3fd2628d8 Add systemtap probe markers for sin, cos, asin and acos 2013-11-20 07:46:48 +05:30
Will Newton
e256c4214c manual/memory.texi: Remove register keyword from examples.
The register keyword doesn't add any information to the examples
and is not useful for modern compilers.

ChangeLog:

2013-11-06  Will Newton  <will.newton@linaro.org>

	* manual/memory.texi (Malloc Examples): Remove register
	keyword from examples.
2013-11-06 16:20:53 +00:00
Bruno Haible
8c5c2600af Fix description of random according to POSIX. Fixes bug 7003 2013-11-01 12:23:51 +01:00
Mike Frysinger
cb8a6dbd17 rename configure.in to configure.ac
Autoconf has been deprecating configure.in for quite a long time.
Rename all our configure.in and preconfigure.in files to .ac.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2013-10-30 17:32:08 +10:00
Ondřej Bílka
151659f637 Fix gethostbyname_r example. Fixes bug 2801. 2013-10-25 19:17:58 +02:00
Ondřej Bílka
ca42d35ea1 Acknowledge that fnmatch can fail. Fixes bug 14029. 2013-10-25 10:44:24 +02:00
Fabrice Bauzac
52e6d80122 Document that mmap() returns MAP_FAILED on error, as per the POSIX standard. 2013-10-25 13:51:58 +05:30
Carlos O'Donell
3d7dc513b7 Mention FIPS 140-2 compliance and Sun RPC.
The Secure RPC implementation in glibc uses DES encryption
during authentication of the user. This use of DES means
that anyone using Sun RPC will likely not be compliant
with FIPS 140-2 which forbids the use of DES.

One solution to the compliance issue is to disable AUTH_DES
and AUTH_KERB, both use DES, when in FIPS compliance mode.
This is not a good idea because it disables all of the even
mildly secure methods of authentication allowing only plain
text methods.

Instead we leave AUTH_DES and AUTH_KERB enabled in FIPS
compliance mode and document the compliance issue in the
manual. FIPS allows this, that is to say that if you can't
fix it you must document the non-compliance.

This commit adds documentation to that effect in the
"DES encryption and password handling" section of the
manual.
2013-10-19 00:11:31 -04:00
Siddhesh Poyarekar
10e1cf6b73 Add systemtap markers to math function slow paths
Add systemtap probes to various slow paths in libm so that application
developers may use systemtap to find out if their applications are
hitting these slow paths.  We have added probes for pow, exp, log,
tan, atan and atan2.
2013-10-11 22:37:53 +05:30
Yogesh Chaudhari
b86835ca92 Update gethostbyname2_r documentation. Fixes bug #156. 2013-10-08 21:42:42 +02:00
Siddhesh Poyarekar
e16d221c06 Fix typo in manual 2013-10-04 17:21:32 +05:30
Ondřej Bílka
b1fe1f2b83 BZ #431 Fix manual of strncat/wcsncat. 2013-10-03 19:54:23 +02:00
Allan McRae
3d2abe798d Revert "Remove references to non-existent content items in install.texi"
This reverts commit 583c76a7ce which
breaks building info pages during "make install".

Conflicts:
	ChangeLog
2013-09-28 13:10:59 +10:00
Allan McRae
583c76a7ce Remove references to non-existent content items in install.texi
These were left in when the installation section was split out
into its own file.
2013-09-27 14:47:56 +10:00
Roland McGrath
39bf0bb44c Update to canonical freemanuals.texi file. 2013-09-24 14:06:56 -07:00
Maciej W. Rozycki
107375acff manual: Fix a typo in `POSIX Threads' section 2013-09-23 21:15:45 +01:00
Alexandre Oliva
322dea0838 Add malloc probes for sbrk and heap resizing.
for ChangeLog

	* malloc/arena.c (new_heap): New memory_heap_new probe.
	(grow_heap): New memory_heap_more probe.
	(shrink_heap): New memory_heap_less probe.
	(heap_trim): New memory_heap_free probe.
	* malloc/malloc.c (sysmalloc): New memory_sbrk_more probe.
	(systrim): New memory_sbrk_less probe.
	* manual/probes.texi: Document them.
2013-09-20 11:54:58 -03:00
Alexandre Oliva
655673f312 Add catch-all alloc retry probe.
for ChangeLog

	* malloc/arena.c (arena_get_retry): Add memory_arena_retry probe.
	* manual/probes.texi: Document it.
2013-09-20 11:50:51 -03:00
Alexandre Oliva
35fed6f15d Add probes for malloc retries.
for ChangeLog

	* malloc/malloc.c (__libc_malloc): Add memory_malloc_retry probe.
	(__libc_realloc): Add memory_realloc_retry probe.
	(__libc_memalign): Add memory_memalign_retry probe.
	(__libc_valloc): Add memory_valloc_retry probe.
	(__libc_pvalloc): Add memory_pvalloc_retry probe.
	(__libc_calloc): Add memory_calloc_retry probe.
	* manual/probes.texi: Document them.
2013-09-20 11:50:08 -03:00
Alexandre Oliva
6999d38c95 Add probes for malloc arena changes.
for ChangeLog

	* malloc/arena.c (get_free_list): Add probe
	memory_arena_reuse_free_list.
	(reused_arena) [PER_THREAD]: Add probes memory_arena_reuse_wait
	and memory_arena_reuse.
	(arena_get2) [!PER_THREAD]: Likewise.
	* malloc/malloc.c (__libc_realloc) [!PER_THREAD]: Add probe
	memory_arena_reuse_realloc.
	* manual/probes.texi: Document them.
2013-09-20 11:48:45 -03:00
Alexandre Oliva
0653427fdb Add probes for all changes to malloc options.
for ChangeLog

	* malloc/malloc.c (__libc_free): Add
	memory_mallopt_free_dyn_thresholds probe.
	(__libc_mallopt): Add multiple memory_mallopt probes.
	* manual/probes.texi: Document them.
2013-09-20 11:42:28 -03:00
Alexandre Oliva
3ea5be5436 Add first set of memory probes.
for ChangeLog

	* malloc/malloc.c: Include stap-probe.h.
	(__libc_mallopt): Add memory_mallopt probe.
	* malloc/arena.c (_int_new_arena): Add memory_arena_new probe.
	* manual/probes.texi: New.
	* manual/Makefile (chapters): Add probes.
	* manual/threads.texi: Set next node.
2013-09-20 11:10:54 -03:00
Allan McRae
aa04af0078 Clarify documentation cross-reference
The end of the "Parsing of Floats" subsection currently reads:

   The GNU C Library also provides '_l' versions of these functions,
which take an additional argument, the locale to use in conversion.
*Note Parsing of Integers::.

Split the final note as it is unrelated to the above comment and
reference it with "See also" instead.
2013-09-10 14:13:40 +10:00
Allan McRae
cdfc721b8d Update pt_chown sections of the manual
The pt-chown binary is discussed in the "Running make install" section
without clarification of the needed configure option.  Clarify this
and simplfy the discription which is already covered in the "Configuring
and compiling" section.
2013-09-10 14:11:39 +10:00
Allan McRae
a9f5ce099c Fix typo in strcoll example 2013-09-09 22:56:38 +10:00
Joseph Myers
3f2e46a494 Remove --disable-versioning. 2013-09-04 15:25:42 +00:00
Ondřej Bílka
f24a6d086b Fix then/than typos. 2013-08-30 18:10:31 +02:00
Florian Weimer
91ce40854d CVE-2013-4237, BZ #14699: Buffer overflow in readdir_r
* sysdeps/posix/dirstream.h (struct __dirstream): Add errcode
	member.
	* sysdeps/posix/opendir.c (__alloc_dir): Initialize errcode
	member.
	* sysdeps/posix/rewinddir.c (rewinddir): Reset errcode member.
	* sysdeps/posix/readdir_r.c (__READDIR_R): Enforce NAME_MAX limit.
	Return delayed error code.  Remove GETDENTS_64BIT_ALIGNED
	conditional.
	* sysdeps/unix/sysv/linux/wordsize-64/readdir_r.c: Do not define
	GETDENTS_64BIT_ALIGNED.
	* sysdeps/unix/sysv/linux/i386/readdir64_r.c: Likewise.
	* manual/filesys.texi (Reading/Closing Directory): Document
	ENAMETOOLONG return value of readdir_r.  Recommend readdir more
	strongly.
	* manual/conf.texi (Limits for Files): Add portability note to
	NAME_MAX, PATH_MAX.
	(Pathconf): Add portability note for _PC_NAME_MAX, _PC_PATH_MAX.
2013-08-16 09:40:34 +02:00
David S. Miller
db24e6842d Update manual/contrib.texi
* manual/contrib.texi: Update entry for Siddhesh Poyarekar.  Add
	entries for Will Newton, Andi Kleen, David Holsgrove, and Ondrej
	Bilka.
2013-08-01 17:27:04 -07:00
Carlos O'Donell
e4608715e6 CVE-2013-2207, BZ #15755: Disable pt_chown.
The helper binary pt_chown tricked into granting access to another
user's pseudo-terminal.

Pre-conditions for the attack:

 * Attacker with local user account
 * Kernel with FUSE support
 * "user_allow_other" in /etc/fuse.conf
 * Victim with allocated slave in /dev/pts

Using the setuid installed pt_chown and a weak check on whether a file
descriptor is a tty, an attacker could fake a pty check using FUSE and
trick pt_chown to grant ownership of a pty descriptor that the current
user does not own.  It cannot access /dev/pts/ptmx however.

In most modern distributions pt_chown is not needed because devpts
is enabled by default. The fix for this CVE is to disable building
and using pt_chown by default. We still provide a configure option
to enable hte use of pt_chown but distributions do so at their own
risk.
2013-07-21 15:39:55 -04:00
Andi Kleen
1717da59ae Add a configure option to enable lock elision and disable by default
Can be enabled with --enable-lock-elision=yes at configure time.
2013-07-02 08:46:55 -07:00
Joseph Myers
cbe7d24bb4 Require GCC 4.4 or later to build glibc. 2013-06-26 23:10:48 +00:00
Joseph Myers
8fcb833a2b Update texinfo.tex. 2013-06-25 17:21:48 +00:00
Roland McGrath
12086fb483 Sort sysd-rules-patterns by descending pattern length. 2013-06-17 09:55:49 -07:00
Siddhesh Poyarekar
adf23d2cca Add documentation for default pthread attribute functions 2013-06-15 12:27:41 +05:30
Joseph Myers
9c84384cc1 Remove trailing whitespace. 2013-06-05 20:44:03 +00:00
Jeff Law
96945714ec [BZ #14256]
* manual/errno.texi (ESTALE): Update to account for more than
        just NFS file systems.
        * sysdeps/gnu/errlist.c: Regenerated.
2013-05-30 05:51:22 -06:00
Ben Norht
56b672e92e Doc fix for 'frexp' in arith.texi
It is the magnitude of the return value which lies
in [0.5, 1), not the return value itself.

---

2013-05-28  Ben North  <ben@redfrontdoor.org>

	* manual/arith.texi (frexp): It is the magnitude of the return
	value which lies in [0.5, 1), not the return value itself.
2013-05-28 17:20:24 -04:00
Thomas Schwinge
2b66ef5d55 * manual/platform.texi: Add missing @end deftypefun.
Fixup for commit d116b7c414.
2013-05-26 18:06:30 +02:00
Adhemerval Zanella
d116b7c414 PowerPC: Program Priority Register support
This patch add inline functions to change the Program Priority Register
from ISA 2.05.
2013-05-24 13:29:30 -05:00
Edjunior Machado
9323d39bae PowerPC: Add functions for shared resources hints. 2013-05-23 10:32:47 -05:00
Carlos O'Donell
e8dd47916f manual/message.texi: Fix english and clarify.
Rewrite the first paragraph to talk about users not humans,
and to use correct English.

Clarify that it is the mapping of messages to IDs that
impacts the design of the message translation API.

---

2013-05-07  Carlos O'Donell  <carlos@redhat.com>

	* manual/message.texi (Message Translation): Talk about users.
	Message to key mapping impacts design.
2013-05-07 12:33:44 -04:00
Roland McGrath
477925062f BZ#15361: Make aio_fsync not check open modes. 2013-04-12 13:11:20 -07:00
Thomas Schwinge
572676160d New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
It is based on draft TS 18661 and currently enabled as a GNU extension.
2013-04-02 13:51:02 +02:00
Mark H Weaver
9ad027fb30 Fix docs for scalbn* and scalbl* functions
* manual/arith.texi (Normalization Functions): Fix prototypes
	for scalbn, scalbnf, scalbnl, scalbln, scalblnf, and scalblnl.
2013-03-24 19:52:10 -04:00
Siddhesh Poyarekar
d3cfc668a3 Rename nptl.texi to threads.texi
The manual and its file names are about interfaces and not the
implementation details.
2013-03-19 14:28:20 +05:30
Carlos O'Donell
ec4ff04d23 manual: Sort mallopt M_* parameters alphabetically
Sort the mallopt M_* parameters alphabetically and add comments for the
missing paramters.
2013-03-17 16:03:02 -04:00