man-pages/Changes

==================== Changes in man-pages-3.01 ====================

Released: 2008-06-16, Konolfingen


Contributors
------------

The following people contributed notes, ideas, or patches that have
been incorporated in changes in this release:

Alain Portal <aportal@univ-montp2.fr>
Andrew Clayton <andrew@digital-domain.net>
Christoph Hellwig <hch@infradead.org>
Neil Horman <nhorman@tuxdriver.com>
Peter Zijlstra <a.p.zijlstra@chello.nl>
Petr Gajdos <pgajdos@suse.cz>
Sam Varshavchik <mrsam@courier-mta.com>
Samuel Thibault <samuel.thibault@ens-lyon.org>
Stuart Cunningham <stuartc@rd.bbc.co.uk>
Yao Zhao <dragonlinux@gmail.com>

Apologies if I missed anyone!


New and rewritten pages
-----------------------

acct.5
    mtk
        A complete rewrite of this page, now with much more detail.

hostname.7
    mtk
        A description og hostnames.
        Taken from FreeBSD 6.2, and lightly edited for man-pages style.

symlink.7
    mtk
        Taken from FreeBSD 6.2, but heavily edited for Linux details,
        improved readability, and man-pages style.


Newly documented interfaces in existing pages
---------------------------------------------

getrlimit.2
    mtk / Peter Zijlstra
        Add description of RLIMIT_RTTIME limit, new in 2.6.25.

mkstemp.3
    mtk
        Add description of mkostemp(), new in glibc 2.7.

core.5
    mtk, after a note by Petr Gajdos; review by Neil Horman
        Document core_pattern pipe syntax, which appeared in
        kernel 2.6.19.
        Add an example program demonstrating use of core_pattern
        pipe syntax.
    mtk
        Document /proc/PID/coredump_filter, new in kernel 2.6.23.
        Documentation was based on the text in
        Documentation/filesystems/proc.txt, plus testing, and
        reading the kernel source.

proc.5
    mtk
        Document /proc/PID/oom_score, which was new in kernel 2.6.11.
        This file displays the "badness" score of the process, which
        provides the basis for OOM-killer decisions.
    mtk
        Document /proc/PID/oom_adj, which was new in kernel 2.6.11.
        This file influences the oom_score of a process.
    mtk
        Document /proc/PID/limits, which was new in 2.6.24.
        This file displays a process's resource limits.
    mtk
        Document /proc/PID/fdinfo/*, which was new in 2.6.22.
        These files display info about each descriptor opened by the
        process: the current file offset, and the file access mode +
        file status flags as set in open() or fcntl(F_SETFL).
    mtk
        Document /proc/PID/mountinfo, which was new in 2.6.26.
        This file displays information about mount points.
        Closely based on text from Documentation/filesystems/proc.txt.
    mtk
        Document /proc/PID/mountstats, which was new in 2.6.17.
        This file displays statistics about mount points.


New links
---------

mkostemp.3
    mtk
        Link to mkstemp.3.

getcwd.2
    mtk
        Link to getcwd.3, which describes several interfaces, among
        them getcwd(), which is in fact a system call.

Global changes
--------------

chown.2
faccessat.2
fchmodat.2
fchownat.2
fstatat.2
getxattr.2
link.2
linkat.2
listxattr.2
open.2
readlink.2
removexattr.2
rename.2
setxattr.2
stat.2
symlink.2
symlinkat.2
unlink.2
futimes.3
remove.3
path_resolution.7
    mtk
        SEE ALSO: Add symlink(7).

intro.1
time.1
fcntl.2
gethostbyname.3
ioctl_list.2
    mtk
        Wrap source lines so that new sentence starts on new line.

addseverity.3
backtrace.3
dlopen.3
fmtmsg.3
getnameinfo.3
getpt.3
grantpt.3
makecontext.3
ptsname.3
tcgetsid.3
unlockpt.3
wordexp.3
    mtk
        Added VERSIONS section.

io_cancel.2
io_destroy.2
io_getevents.2
io_setup.2
io_submit.2
    Alain Portal / mtk
        Re-order ERRORS and SEE ALSO entries to be alphabetical.


Changes to individual pages
---------------------------

acct.2
    mtk
        Add a few more words to DESCRIPTION.
        NOTES: Add pointer to acct(5).

alarm.2
    Alain Portal
        s/process/calling process/ so as to that the alarm signal is
        delivered to the calling process.

brk.2
    Yao Zhao / mtk
        Clarify discussion of return value of sbrk().
    mtk
        DESCRIPTION: Add some sentences giving an overview of these
        interfaces.
        Add note recommending use of malloc(3).
        Change name of brk() argument to the simpler 'addr'.
        Add "(void *)" cast to "-1" for error return of sbrk().
        Removed some incorrect text about "brk(0)".
        Note that SUSv2 specified the return value of sbrk().
        Added a detail on the glibc brk() wrapper.
        Remove discussions of standards old (C89 and POSIX.1-1990);
        CONFORMING TO already discusses the situation with respect
        to more recent standards.

chmod.2
    mtk
        Clarify description of chmod() and fchmod().
        Add further detail on S_ISUID, S_ISGID, and S_ISVTX permissions.
        Reformat list of permissions bits.

chown.2
    mtk
        Describe rules governing ownership of new files (bsdgroups
        versus sysvgroups, and the effect of the parent directory's
        set-group-ID permission bit).

chroot.2
    Alain Portal
        Clarify description a little.
        s/changes the root directory/
          changes the root directory of the calling process/

execve.2
    mtk
        Fix text that warns against use of NULL argv and envp.
        Using a NULL envp does in fact seem to be portable (works
        on Solaris and FreeBSD), but the Linux semantics for a NULL
        argv certainly aren't consistent with other implementations.
        See http://bugzilla.kernel.org/show_bug.cgi?id=8408.

mknod.2
    mtk
        Note that EEXIST applies, even if the pathname is a
        (possibly dangling) symbolic link.

open.2
    mtk, after a note from Christoph Hellwig
        NOTES: Note that access mode flags are not single bits,
        and document the Linuxism "access mode 3".
        See also http://thread.gmane.org/gmane.linux.kernel/653123.

sched_setscheduler.2
    mtk
        Add pointer to discussion of RLIMIT_RTTIME in getrlimit.2.
    mtk, after a note by Andrew Clayton
        Rewrote and restructured various parts of the page for greater
        clarity.

dprintf.3
    mtk
        Note that these functions are included in the next POSIX revision.
        Remove editorial discussion about what the functions should have
        been named.

getaddrinfo.3
    mtk
        SEE ALSO: Add hostname(7).

getmntent.3
    mtk, after Stuart Cunningham pointed out the typo
        Remove statement that LSB deprecates the functions
        "endmntent(), setmntent() [sic] and setmntent()".
        This doesn't seem to be true (I can't find mention of
        deprecation in any of the LSB specs).  Rather, LSB simply
        doesn't specify these functions.  (LSB 1.3 had a spec of
        setmntent(), but not getmntent() or endmntent(), and noted
        that having a spec of setmntent() was of little use without
        also having a spec of getmntent().)
        See also https://lists.linux-foundation.org/pipermail/\
        lsb-discuss/2006-October/003078.html

getnameinfo.3
    mtk
        Various minor changes.

mkfifo.3
    mtk
        Note that EEXIST applies, even if the pathname is a
        (possibly dangling) symbolic link.

mkstemp.3
    mtk
        Fix discussion of O_EXCL flag.
        These functions may also fail for any of the errors described
        in open(2).
        Various other rewordings.

remainder.3
    mtk
        Recommend against drem(), in favor of remainder().

man-pages.7
    mtk
        Enhanced description of VERSIONS section.

mq_overview.7
   mtk
        Note that Linux does not currently support ACLs for POSIX
        message queues.

sem_overview.7
    mtk
        Note that Linux supports ACLs on POSIX named semaphores
        since 2.6.19.

unix.7
    mtk, after a note by Samuel Thibault
        Provide a clear description of the three types of address that
        can appear in the sockaddr_un structure: pathname, unnamed,
        and abstract.