signal.7: SEE ALSO: add sigreturn(2)

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
sigaction.2: SEE ALSO: add sigreturn(2)

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
sigreturn.2: Remove crufty FILES section

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
sigreturn.2: Add (a lot) more detail on the signal trampoline

And rewrite much of the page.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
sigaction.2: Add some detail on the sa_restorer field

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
sigaction.2: tfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
sigaction.2: srcfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
sigaction.2: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
sigaction.2: Document SA_RESTORER

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
restart_syscall.2: wfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
signal.7: Mention other "slow devices"

Reads from eventfd(2), signalfd(2), timerfd(2), inotify(7),
and fanotify(7) file descriptors are also slow operations
that are restartable.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
signal.7: Since Linux 3.8, reads on inotify(7) file descriptors are restartable

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
signal.7: inotify(7) reads no longer show the odd EINTR error after SIGCONT

Since kernel 3.7, reads from inotify(7) file descriptors no longer
show the (Linux oddity) behavior of failing with EINTR when the
process resumes after a stop signal + SIGCONT.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
restart_syscall.2: srcfix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
restart_syscall.2: srcfix: Remove crufty FIXME

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
semop.2: Remove information about semtimedop() EAGAIN that is repeated elsewhere

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
semop.2: Add subsection head for semtimedop()

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
semop.2: Add note that interrupted semtimedop() returns 'timeout' unchanged

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
signal.7: ffix

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
signal.7: Fix SO_RECVTIMEO/ SO_SENDTIMEO confusion in text

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