system_data_types.7: Add ldiv_t

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

div_t.3: New link to system_data_types(7)

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: Add div_t

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

imaxdiv_t.3: New link to system_data_types(7)

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: Add imaxdiv_t

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

strfromd.3: tfix

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

core.5: srcfix

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

core.5: ffix

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

ldd.1: Minor tweak to 'ldd' output example

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

ptrace.2: ffix

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

pldd.1, bpf.2, clone.2, dup.2, ioctl_fat.2, nfsservctl.2, open_by_handle_at.2, perf_event_open.2, pivot_root.2, request_key.2, sched_setaffinity.2, seccomp.2, select.2, statx.2, dl_iterate_phdr.3, dlinfo.3, dlopen.3, insque.3, newlocale.3, printf.3, pthread_setname_np.3, rpc.3, stdarg.3, strfmon.3, veth.4, proc.5, slabinfo.5, cgroup_namespaces.7, cgroups.7, cpuset.7, fanotify.7, inotify.7, mount_namespaces.7, sock_diag.7, user_namespaces.7, ld.so.8: Use \(aq instead of ' inside monospace fonts

Use \(aq to get an unslanted single quote inside monospace code
blocks. Using a simple ' results in a slanted quote inside PDFs.

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

open.2: ffix

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

ioctl_ns.2, stat.2: Fix signedness of printf specifiers

These variables are either of an unsigned integer type per POSIX;
or of an integer type per POSIX, that Linux defines as an unsigned integer type.

Print them with 'uintmax_t' instead of 'intmax_t' to avoid
big positive numbers being printed as negative numbers.

Bug report:
From: Konstantin Bukin @ 2020-09-13 15:04 UTC
  To: mtk.manpages; +Cc: Konstantin Bukin, linux-man

inode numbers are expected to be positive. Casting them to a signed type
may result in printing negative values. E.g. running example program on
the following file:

$ ls -li test.txt
9280843260537405888 -r--r--r-- 1 kbukin hardware 300 Jul 21 06:36 test.txt

results in the following output:

$ ./example test.txt
ID of containing device:  [0,480]
File type:                regular file
I-node number:            -9165900813172145728
Mode:                     100444 (octal)
Link count:               1
Ownership:                UID=2743   GID=30
Preferred I/O block size: 32768 bytes
File size:                300 bytes
Blocks allocated:         8
Last status change:       Tue Jul 21 06:36:50 2020
Last file access:         Sat Sep 12 14:13:38 2020
Last file modification:   Tue Jul 21 06:36:50 2020

Such erroneous reporting happens for inode values greater than maximum
value which can be stored in signed long. Casting does not seem to be
necessary here. Printing inode as unsigned long fixes the issue.

Reported-by: Konstantin Bukin <kbukin@gmail.com>
Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

fexcept_t.3: New link to system_data_types(7)

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: Add 'fexcept_t'

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: Reword description of fenv_t to avoid simply quoting POSIX text

The existing text comes straight from POSIX. In copyright terms,
this is at least a gray area, and in any case, simply reproducing
the text of the standard has limited value, since people can
consult the standard directly.  So, rewrite the text, to simply
quote the description from fenv(3).

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

system_data_types.7: ffix

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

id_t.3: New link to system_data_types(7)

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

system_data_types.7: Add 'id_t'

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

system_data_types.7: Add self to copyright notice

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

gid_t.3: New link to system_data_types(7)

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

system_data_types.7: Add 'gid_t'

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

uid_t.3: New link to system_data_types(7)

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

system_data_types.7: Add 'uid_t'

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

kcmp.2: tfix

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

credentials.7: SEE ALSO: add system_data_types(7)

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

system_data_types.7: tfix

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

system_data_types.7: Add further POSIX details for size_t, ssize_t, and suseconds_t

The implementation shall support one or more programming
environments where these types are no wider than 'long'.

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

pid_t.3: New link to system_data_types(7)

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

system_data_types.7: Document pid_t

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

sigset_t.3: New link to system_data_types.7

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

system_data_types.7: Add description of sigset_t

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

system_data_types.7: Add brief description of regmatch_t

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

fenv_t.3: New link to new documented type in system_data_types(7)

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: Document fenv_t

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: wfix

A limit can be defined by other than POSIX

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: Minor tweaks to Alejandro Colomar's patch

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

system_data_types.7: Describe use of printf()/scanf() modifiers for integer data types

Add note about length modifiers and conversions to [u]intmax_t,
and add a corresponding example.

Reported-by: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: Minor tweaks to Alejandro Colomar's patch

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

system_data_types.7: Specify the length modifiers for the variables that have them

Reported-by: Florian Weimer <fweimer@redhat.com>
Reported-by: Paul Eggert <eggert@cs.ucla.edu>
Reviewed-by: Paul Eggert <eggert@cs.ucla.edu>
Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

siginfo_t.3: New link to new documented type in system_data_types(7)

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: Defer to sigaction(2) for further information on siginfo_t

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

system_data_types.7: ffix

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

system_data_types.7: Document siginfo_t

Note: There are a few members of this structure that are
not required by POSIX (XSI extensions, and such).

I simply chose to not document them at all.

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

syscalls.2: Move system calls from discontinued ports out of main syscall list

Various ports that had their own indigenous system calls have
been discontinued. Remove those system calls (none of which had
manual pages!) to a separate part of the page, to avoid
cluttering the main list of system calls.

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

getcwd.2, mq_notify.2, mq_open.2, mq_timedreceive.2, mq_timedsend.2, mq_unlink.2: Reinstate links to section 3 pages that document system calls

Some of the links removed in commit 247c654385128fd0748 should
have been kept, because in some cases there are real system
calls whose wrapper functions are documented in Section 3.

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

syscalls.2: Remove duplicate entry for swapcontext(2)

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

ip.7: Minor wording fixes

Mainly cleaning up usages of "only".

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

ip.7: Minor edits to Stephen Smalley's patch

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

ip.7: Document IP_PASSSEC for UDP sockets

Document the IP_PASSSEC socket option and SCM_SECURITY
ancillary/control message type for UDP sockets.

IP_PASSSEC for UDP sockets was introduced in Linux 2.6.17 [1].

Example NetLabel and IPSEC configurations and usage of this
option can be found in the SELinux Notebook [2] and SELinux
testsuite [3].

[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2c7946a7bf45ae86736ab3b43d0085e43947945c

[2] https://github.com/SELinuxProject/selinux-notebook

[3] https://github.com/SELinuxProject/selinux-testsuite

Reviewed-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Stephen Smalley <stephen.smalley.work@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ip.7, unix.7: Minor edits to Stephen Smalley's patches

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

unix.7: srcfix: rewrap source lines in Stephen Smalley's patch

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

ip.7: srcfix: rewrap source lines in Stephen Smalley's patch

(No content changes.)

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

socket.7,ip.7: Document SO_PEERSEC for AF_INET sockets

Augment the description of SO_PEERSEC to cover AF_INET sockets in
addition to the prior description for AF_UNIX.

SO_PEERSEC for TCP sockets was introduced in Linux 2.6.17 [1], and
SO_PEERSEC for SCTP sockets was introduced in Linux 4.17 [2].

This does not cover usage of SCM_SECURITY for UDP sockets, which
was also introduced in the same commit for 2.6.17.

Examples of the necessary labeled IPSEC and NetLabel
configurations to enable use of SO_PEERSEC for TCP and SCTP
sockets can be found in the SELinux Notebook [3] and the
selinux-testsuite [4].

[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2c7946a7bf45ae86736ab3b43d0085e43947945c

[2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d452930fd3b9031e59abfeddb2fa383f1403d61a

[3] https://github.com/SELinuxProject/selinux-notebook

[4] https://github.com/SELinuxProject/selinux-testsuite

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

socket.7, unix.7: Add initial description for SO_PEERSEC

SO_PEERSEC was introduced for AF_UNIX stream sockets connected via
connect(2) in Linux 2.6.2 [1] and later augmented to support
AF_UNIX stream and datagram sockets created via socketpair(2) in
Linux 4.18 [2].  Document SO_PEERSEC in the socket.7 and unix.7
man pages following the example of the existing SO_PEERCRED
descriptions.  SO_PEERSEC is also supported on AF_INET sockets
when using labeled IPSEC or NetLabel but defer adding a
description of that support to a separate patch.

The module-independent description of the security context
returned by SO_PEERSEC is from Simon McVittie.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git/commit/?id=da6e57a2e6bd7939f610d957afacaf6a131e75ed

[2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0b811db2cb2aabc910e53d34ebb95a15997c33e7

Reviewed-by: Serge Hallyn <serge@hallyn.com>
Cowritten-by: Simon McVittie <smcv@collabora.com>
Signed-off-by: Stephen Smalley <stephen.smalley.work@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

sigevent.7: ffix

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

sigevent.7: Note that 'sigev_notify_thread_id' is Linux-specific

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

system_data_types.7: ffix

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

system_data_types.7: Minor tweaks

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

aiocb.3: New link to new documented type in system_data_types(7)

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: Defer to aio(7) for further information about 'struct aiocb'

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

system_data_types.7: Document aiocb

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: srcfix: cosmetic: Visually separate types

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: Add reference to sigevent(7)

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

system_data_types.7: Document sigevent

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: ffix

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

regmatch_t.3: New link for new documented type in system_data_types(7)

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: Document regmatch_t

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: ffix

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: srcfix: Add FIXME notes

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

regoff_t.3: New link to new documented type in system_data_types(7)

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: Document regoff_t

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

ptrdiff_t.3: New link to new documented type in system_data_types(7)

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: Document ptrdiff_t

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: wfix: sort referenced types

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: srcfix: Remove TODO comment

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: Add read(2) and write(2) to "See also" for size_t

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

size_t.3: New link to new documented type in system_data_types(7)

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: Document size_t

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

feature_test_macros.7: tfix

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

intro.2, intro.3, feature_test_macros.7, standards.7: SEE ALSO: add system_data_types(7)

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

system_data_types.7: Add SEE ALSO references to feature_test_macros(7) and standards(7)

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

sigval.3, ssize_t.3, suseconds_t.3, time_t.3, timer_t.3, timespec.3, timeval.3: New links to new system_data_types(7) page

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

system_data_types.7: Add a new page to document system data types

The initial version documents sigval, ssize_t, suseconds_t,
time_t, timer_t, timespec, and timeval.

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

freeaddrinfo.3: Fix memory leaks in freeaddrinfo() examples

[mtk: the coding style used in the example could lead people to
inject memory leaks in their code if they cut/paste/modify the
code to replace "exit" paths with "return" paths from a library
function.]

[Marko, from the mail thread discussing this patch:]
You are right about terminating the process. However, people copy
that example and put the code in a function changing "exit" to
"return". There are a bunch of examples like that here
https://beej.us/guide/bgnet/html/#poll, for instance. That error
bothered me when reading the network programming guide
https://beej.us/guide/bgnet/html/. Than I looked for information
elsewhere:

https://stackoverflow.com/questions/6712740/valgrind-reporting-that-getaddrinfo-is-leaking-memory

https://stackoverflow.com/questions/15690303/server-client-sockets-freeaddrinfo3-placement

And finally, I checked manual pages and saw where these errors
come from.

When you change that to a function and return without doing
freeaddrinfo, that is a memory leak. I believe an example should
show good programming practices. Relying on exiting and clearing
the memory in that case is not such a case. In my opinion, these
examples lead people to make mistakes in their programs.

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

sigaction.2: Use correct POSIX type for siginfo_t.si_value

Reported-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

man-pages.7: Add some more requests re code examples

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

man-pages.7: Soften the statement that ideal programs should be short

Sometimes, a longer program is needed. See
https://twitter.com/shuveb/status/1305689727715086337.

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

fanotify.7: ffix

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

add_key.2, clock_getres.2, clone.2, futex.2, getdents.2, getpid.2, getrlimit.2, ioctl_ns.2, kcmp.2, keyctl.2, memfd_create.2, request_key.2, stat.2, timer_create.2, wait.2, clock_getcpuclockid.3, dl_iterate_phdr.3, getgrent_r.3, getpwent_r.3, getpwnam.3, posix_spawn.3, pthread_getcpuclockid.3, strcat.3, feature_test_macros.7, user_namespaces.7: Switch printf() casts to use [u]intmax_t + %ju / %jd

Let's move to the 21st century. Instead of casting system data
types to long/long long/etc. in printf() calls, instead cast to
intmax_t or uintmax_t, the largest available signed/unsigned
integer types.

[mtk: rewrote commit message]

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

clock_getres.2: Cast 'time_t' to 'int' for printf() and fix the length modifiers

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Reviewed-by: Jakub Wilk <jwilk@jwilk.net>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

userfaultfd.2: Use 'PRIx64' rather than "%llx" when printing 64-bit fixed-width types

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

rtld-audit.7: Use "%u" rather than "%d" when printing 'unsigned int' values

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

open_by_handle_at.2: Use "%u" rather than "%d" when printing 'unsigned int' values

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

mprotect.2: Use "%p" rather than casting to 'long' when printing pointer values

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

malloc_hook.3: Remove unneeded cast, and print 'size_t' with "%zu"

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

eventfd.2, mprotect.2, pidfd_open.2, spu_run.2, timer_create.2, bswap.3, dl_iterate_phdr.3, endian.3, pthread_attr_init.3, pthread_getattr_np.3, vcs.4, rtld-audit.7: In printf(): s/0x%/%#/ except when followed by X instead of x

Use printf()'s '#' flag character to prepend the string "0x".

However, when the number is printed in uppercase, and the prefix
is in lowercase, the string "0x" needs to be manually written.

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

getaddrinfo_a.3: Use C99 style to declare loop counter variables

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

msgctl.2, outb.2, abs.3, dl_iterate_phdr.3, drand48.3, drand48_r.3, encrypt.3, ffs.3, lrint.3, lround.3, ntp_gettime.3, printf.3, random.3, scalbln.3, scanf.3, strtol.3, strtoul.3, utmp.5, feature_test_macros.7, rtld-audit.7: Omit 'int' keyword for 'short', 'long' and 'long long' types, both signed and 'unsigned'

For consistency.

The types are written both with and without the redundant 'int' keyword
all over the man-pages.  However, the most used form, by far, is the one
without 'int'.

Signed-off-by: Alejandro Colomar <colomar.6.4.3@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

pthread_attr_init.3, pthread_create.3, pthread_getattr_np.3: Use correct type (size_t) for some variables

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