man-pages-4.03 is released

[Michael Kerrisk (man-pages)]

Gidday,

The Linux man-pages maintainer proudly announces:

    man-pages-4.03 - man pages for Linux

This release includes input and contributions from
nearly 40 people.

Tarball download:
    http://www.kernel.org/doc/man-pages/download.html
Git repository:
    https://git.kernel.org/cgit/docs/man-pages/man-pages.git/
Online changelog:
    http://man7.org/linux/man-pages/changelog.html#release_4.02

A short summary of the release is blogged at:
http://linux-man-pages.blogspot.com/2015/12/man-pages-403-is-released.html

The current version of the pages is browsable at:
http://man7.org/linux/man-pages/

A selection of changes in this release that may be interesting
for readers of this list is shown below.

Cheers,

Michael

==================== Changes in man-pages-4.03 ====================


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

perf_event_open.2
    Vince Weaver
        4.1 adds AUX sample support
    Vince Weaver
        4.1 data_offset and data_size fields
    Vince Weaver  [Alexander Shishkin]
        Document aux_{head,tail,offset,size} support
    Vince Weaver
        4.0 update rdpmc documentation
    Vince Weaver
        4.1 adds PERF_RECORD_ITRACE_START
    Vince Weaver
        Document 4.1 clockid support
    Vince Weaver  [Steven Rostedt, Masami Hiramatsu]
        4.1 PERF_EVENT_IOC_SET_BPF support
    Vince Weaver
        4.1 adds AUX_FLAG_OVERWRITE support
    Vince Weaver
        4.1 PERF_SAMPLE_BRANCH_CALL_STACK
    Vince Weaver
        4.1 adds aux_watermark
    Vince Weaver
        Add possibility of EBUSY error

prctl.2
    Andy Lutomirski  [Kees Cook, Serge Hallyn]
        Document operations for ambient capabilities
    Michael Kerrisk
        Rework PR_CAP_AMBIENT text
        Note that arg4 and arg5 must be zero for CAP_AMBIENT
        RETURN VALUE: Add PR_CAP_AMBIENT + PR_CAP_AMBIENT_IS_SET case
        ERRORS: document PR_CAP_AMBIENT error cases

capabilities.7
    Andy Lutomirski  [Kees Cook, Serge Hallyn]
        Document ambient capabilities
    Michael Kerrisk
        Various additions and reworkings for ambient capability text


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

mremap.2
    Eric B Munson  [Michal Hocko]
        Add note about mremap() with locked areas
            When mremap() is used to move or expand a mapping that is locked
            with mlock() or equivalent it will attempt to populate the new
            area.  However, like mmap(MAP_LOCKED), mremap() will not fail if
            the area cannot be populated.  Also like mmap(MAP_LOCKED) this
            might come as a surprise to users and should be noted.
open.2
    Michael Kerrisk  [David Drysdale]
        Remove accidental mention of O_TTY_INIT
            An earlier edit mentioned O_TTY_INIT as a file creation flag.
            That's true, according POSIX, but Linux does not implement
            this flag, so remove mention of it.

ptrace.2
    Tycho Andersen
        Document PTRACE_O_SUSPEND_SECCOMP flag
    Michael Kerrisk
        Document /proc/sys/kernel/yama/ptrace_scope
    Michael Kerrisk
        Note that PTRACE_ATTACH cannot be applied to nondumpable processes

signalfd.2
    Michael Kerrisk
        Describe semantics with respect to SCM_RIGHTS

core.5
    Ross Zwisler
        Add info about DAX coredump filtering flags
            Kernel 4.4 added two new core dump filtering flags,
            MMF_DUMP_DAX_PRIVATE and MMF_DUMP_DAX_SHARED.

            These flags allow us to explicitly filter DAX mappings.
            This is desirable because DAX mappings, like hugetlb
            mappings, have the potential to be very large.

signal.7
    Michael Kerrisk  [Michael Hocko]
        Note async-signal-safe functions added by POSIX.1-2008 TC1

tcp.7
    Daniel Borkmann  [Michael Kerrisk]
        Improve paragraphs on tcp_ecn and add tcp_ecn_fallback bullet

ld.so.8
    Michael Kerrisk
        LD_POINTER_GUARD has been removed in glibc 2.23
    Michael Kerrisk
        Describe secure-execution mode
    Michael Kerrisk  [Maria Guseva]
        Replace mentions of set-UID/set-GID programs with secure-execution mode
            Inspired by a patch from Maria Guseva.
    Maria Guseva  [Silvan Jegen]
        LD_DEBUG is effective in secure-execution mode if /etc/suid-debug exists

-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
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