Changes: Expanded tabs

kexec_load.2, personality.2, prctl.2, reboot.2, socket.2, fflush.3, getopt.3, random.3, termios.3, random.4, passwd.5, capabilities.7, signal.7: tstamp

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

Changes: Ready for 3.79

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

tzset.3: ffix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

tzset.3: typos and version bump

Signed-off-by: J William Piggott <elseifthen@gmx.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

tzset.3: There are only two TZ formats

tzset(3) currently states that there are three TZ formats. The
first two it lists are actually variations of the POSIX-style
TZ format, of which there are at least five variations.

This patch corrects this to match the POSIX specification of
TZ having only two formats.

http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html

Signed-off-by: J William Piggott <elseifthen@gmx.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

tzset.3: Fix incorrect TZ string representation

The TZ string representation indicates that the start/end
rules are required; this is incorrect.

Updated the TZ string format to the POSIX specification and
improve its readability by having only the optional parts in
italics.

http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html

Signed-off-by: J William Piggott <elseifthen@gmx.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

localedef.1: tfix

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

capabilities.7: SEE ALSO: add setpriv(1)

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getopt.3: SEE ALSO: add getopt(1)

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

termios.3: SEE ALSO: add reset(1), setterm(1), tput(1)

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

passwd.5: SEE ALSO: add chfn(1), chsh(1)

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

personality.2: SEE ALSO: add setarch(8)

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: srcfix: Update copyright for Heinrich

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: Add mtk to copyright

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: ERRROS: add some details to kexec_file_load ENOEXEC error

Reported-by: Scot Doyle <lkml14@scotdoyle.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: Minor tweaks

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

socket.2: Tweaks to Stephan Mueller's patch

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

socket.2: document AF_ALG

Add a reference to the AF_ALG protocol accessible via socket(2).

Signed-off-by: Stephan Mueller <stephan.mueller@atsec.com>
CC: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

tzset.3: Add description for posixrules file

Based upon reviewing the glibc source, the posixrules file is being used
for very specific TZ strings that can be represented as:

[:]stdoffsetdst[offset][,]

If anything follows the above string, even invalid data, posixrules will
not be used. Below is some shell output demonstrating this.

$ TZ="NZST-12:00:00NZDT-13:00:00,ANYTHING" \
strace -eopen date 2>&1 | grep -Ei 'posixrules|jan'
Thu Jan 29 06:53:35 NZDT 2015

$ TZ="NZST-12:00:00NZDT-13:00:00," \
strace -eopen date 2>&1 | grep -Ei 'posixrules|jan'
open("/usr/share/zoneinfo/posixrules", O_RDONLY|O_CLOEXEC) = 3
Thu Jan 29 05:54:58 NZST 2015

Signed-off-by: J William Piggott <elseifthen@gmx.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

tzset.3: Add ENVIRONMENT section + other rearrangements

FILES section was overly verbose and included
environment variables.  Added ENVIRONMENT section,
removing ENV VARS from the FILES section.

As stated in commit 2c7f200, /usr/share/zoneinfo/localtime
is not used, nor recommended by glibc.

Signed-off-by: J William Piggott <elseifthen@gmx.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: Rework GRND_RANDOM text

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: Rework discussion of blocking section on interuption by signals

Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

semget.2: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: Reads from /dev/urandom can block for large request sizes

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: SEE ALSO: add signal(7)

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

signal.7: Add getrandom(2) to list of restartable system calls

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: Give the reader a hint about when /dev/urandom is initialized

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: Minor tweaks to Heinrich's text

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: Clarification of open questions

With his last patches for getrandom.2 Michael Kerrisk posed a few
questions and left some comments in the man-page. This patch
seeks to clarify the open issues.

 72 For example, if the call is interrupted by a signal handler,
 73 it may return a partially filled buffer, or fail with the error
 74 .BR EINTR .
 75 .\" Tested with buffer sizes > 256 bytes: both partial reads
 76 .\" and EINTR can occur, with the former being more frequent.
 77 .\"

Michael's observation agrees with the code.
For buffer size > 256: If the buffer is still empty EINTR occurs.
If any number of bytes has been read to the buffer, that number
is returned.  The comment can be removed.

 78 .\" mtk: In the absence of signals, in my testing, even very large reads
 79 .\" return full buffers. I found that reads of up to 33554431 always
 80 .\" returned a filled buffer. Specifying 'buflen' > 33554431 always
 81 .\" returned just 33554431 bytes. (I'm not sure where that number comes
        from.

The maximum number of bytes transferred is limited for
/dev/urandom to:

    nbytes = min_t(size_t, nbytes, INT_MAX >> (ENTROPY_SHIFT + 3));
    // <= 0x1fffff

and for /dev/random to
nbytes = min_t(size_t, nbytes, SEC_XFER_SIZE); // <= 0x200

Lets put this into the NOTES section.

 224 When reading from
 225 .IR /dev/random ,
 226 blocking requests of any size can be interrupted by a signal
 227 (the call fails with the error
 228 .BR EINTR ).

Thats ok.

 82 If the pool has not yet been initialized, then the call blocks, unless
 83 .B GRND_RANDOM
 84 is specified in
 85 .IR flags .
 86 .\" FIXME We need a bit more information here.
 87 .\"       The reader will ask: when is /dev/urandom initialized?
 88 .\"       There should be some text here to explain that.

Entropy is collected from different sources, e.g.
 - time of reaping a thread
 - MAC address of a network interfaces
 - Allwinner security ID
 - ROM content of a firewire device
 - ...

When more than 128 bits have been collected, the pool is set
to initialized.

I suggest that detailed information about the initialization
should be provided on the random.4 page.

I added a paragraph in the NOTES section.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: Enhance discussion of /dev/urandom reads in DESCRIPTION

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: Clarify interaction of GRND_RANDOM and signals

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: NOTES: clarify discussion of EINTR error

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: srcfix: add FIXME

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: Clarify text with respect to GRND_NONBLOCK

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: Clarify sentence on getrandom() and partial GRND_RANDOM reads

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: Reword sentence on blocked getrandom() and interruption by signals

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: Minor wording fixes

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: tfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: Rework paragraphs marked with FIXME

The patch clarifies when blocking may occur while calling
getrandom().

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: Mention bug concerning treatment of interrupts

Theodore Ts'o confirmed the bug described in
https://lkml.org/lkml/2014/11/29/16

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: Reword GRND_RANDOM description

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: Reword GRND_NONBLOCK description

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: Add a sentence to clarify the default behavior of getrandom()

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: srcfix: added FIXME

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: Minor wording fixes

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

random.4: SEE ALSO: add getrandom(2)

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

random.3: SEE ALSO: add getrandom(2)

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getrandom.2: New page documenting getrandom(2)

Kernel 3.17 introduces a new system call getrandom(2).

The man page in this patch is based on the commit message by
Theodore Ts'o and suggestions by Michael Kerrisk.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

signal.7: Add F_OFD_SETLKW to list of restartable operations

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: srcfix: add mtk to copyright list

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: ERRORS: add some further error cases

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: Edits after Q&A from Vivek Goyal

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: Various additions after feedback from Vivek Goyal

Cowritten-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: Better describe EINVAL error when nr_segments exceeds KEXEC_SEGMENT_MAX

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_file_load.2: New link to kexec_load.2

kexec_load.2: Remove crufty statements that constants are not exported to glibc

With the kernel "uapi" changes of a a few releases ago, these
constants are now automatically provided to glibc.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: Move some text from NOTES to DESCRIPTION

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: SEE ALSO: add Documentation/kernel-parameters.txt

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: SEE ALSO: add Documentation/kdump/kdump.txt

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: Edits after review comments by Vivek Goyal

Reviewed-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: srcfix: Add Vivek Goyal to copyright notice

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: tfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: Note rationale for kexec_file_load()

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: Minor rewording

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: SEE ALSO: add kexec(8)

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

reboot.2: ffix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

reboot.2: SEE ALSO: add kexec_load(2)

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: Add FIXMEs

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: srcfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: srcfix: remove a FIXME

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: kexec_file_load() requires CONFIG_KEXEC_FILE

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: CONFORMING TO: update for kexec_file_load()

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: Note kernel version for kexec_file_load()

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: Tweaks to Vivek Goyal's patch

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

kexec_load.2: Document new kexec_file_load() system call

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

iconvconfig.8: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

tcp.7: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

tcp.7: tfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

socket.7: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

pthreads.7: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

pipe.7: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

namespaces.7: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ipv6.7: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

epoll.7: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

bootparam.7: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

repertoiremap.5: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

proc.5: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

st.4: tfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

rtc.4: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

mem.4: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

statfs.2: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

shmctl.2: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

setns.2: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

select_tut.2: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

perf_event_open.2: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ioprio_set.2: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

execve.2: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>