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| author | Mike Frysinger <vapier@gentoo.org> | 2017-02-15 15:14:42 -0500 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2017-04-19 15:52:04 +0200 |
| commit | 7e3236a5a0106b48c7f3aed1480ca936c26603f7 (patch) | |
| tree | 7f809deb22a0458f1e77c9f9a20db3a78462b525 | |
| parent | a87d0921a7cceb1c9cc15f7319e17499232afffd (diff) | |
| download | man-pages-7e3236a5a010.tar.gz | |
prctl(2): PR_SET_MM: Document new PR_SET_MM_MAP{,_SIZE} helpers
Signed-off-by: Mike Frysinger <vapier@chromium.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
| -rw-r--r-- | man2/prctl.2 | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/man2/prctl.2 b/man2/prctl.2 index c6d828a910..5607188440 100644 --- a/man2/prctl.2 +++ b/man2/prctl.2 @@ -652,6 +652,34 @@ in a process life time. Any further attempts will be rejected. This should help system administrators monitor unusual symbolic-link transitions over all processes running on a system. +.P +The following options are available since Linux 3.18. +.\" commit f606b77f1a9e362451aca8f81d8f36a3a112139e +.TP +.BR PR_SET_MM_MAP +Provides one-shot access to all the addresses by passing in a +.I struct prctl_mm_map +(as defined in \fI<linux/prctl.h>\fP). +The +.I arg4 +argument should provide the size of the struct. + +This feature is available only if the kernel is built with the +.BR CONFIG_CHECKPOINT_RESTORE +option enabled. +.TP +.BR PR_SET_MM_MAP_SIZE +Returns the size of the +.I struct prctl_mm_map +the kernel expects. +This allows user space to find a compatible struct. +The +.I arg4 +argument should be a pointer to an unsigned int. + +This feature is available only if the kernel is built with the +.BR CONFIG_CHECKPOINT_RESTORE +option enabled. .RE .TP .BR PR_MPX_ENABLE_MANAGEMENT ", " PR_MPX_DISABLE_MANAGEMENT " (since Linux 3.19) " |