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clone.2, fork.2: Document ERESTARTNOINTR error code 

Since Linux 2.6.17, clone and fork syscalls return ERESTARTNOINTR
when interrupted by a signal before newly created process is added
to its process group.
This error code can only be seen by ptrace at syscall exit tracing.

The information was obtained from kernel source code:
http://bit.ly/24xdofn

Signed-off-by: Nikola Forró <nforro@redhat.com>
This commit is contained in:
Nikola Forró 2016-05-04 10:55:56 +02:00 committed by Michael Kerrisk
parent 29ff7699b7
commit 10e46057dd
2 changed files with 8 additions and 0 deletions
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4
man2/clone.2
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@ -1013,6 +1013,10 @@ and the call would cause the limit on the number of
nested user namespaces to be exceeded.
See
.BR user_namespaces (7).
.TP
.BR ERESTARTNOINTR " (since Linux 2.6.17)"
System call was interrupted by a signal and will be restarted.
(This can be seen only during a trace.)
.SH VERSIONS
There is no entry for
.BR clone ()

4
man2/fork.2
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@ -242,6 +242,10 @@ failed to allocate the necessary kernel structures because memory is tight.
is not supported on this platform (for example,
.\" e.g., arm (optionally), blackfin, c6x, frv, h8300, microblaze, xtensa
hardware without a Memory-Management Unit).
.TP
.BR ERESTARTNOINTR " (since Linux 2.6.17)"
System call was interrupted by a signal and will be restarted.
(This can be seen only during a trace.)
.SH CONFORMING TO
POSIX.1-2001, POSIX.1-2008, SVr4, 4.3BSD.
.SH NOTES