[PATCH 6/6] prctl.2: describe PR_SET_OPENAT_BENEATH/PR_GET_OPENAT_BENEATH
From: David Drysdale <hidden>
Date: 2014-07-25 13:48:39
Also in:
lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
--- man2/prctl.2 | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+)
diff --git a/man2/prctl.2 b/man2/prctl.2
index 119989183ed3..f5f71af249f2 100644
--- a/man2/prctl.2
+++ b/man2/prctl.2@@ -295,6 +295,41 @@ A value of 1 indicates .BR execve (2) will operate in the privilege-restricting mode described above. .TP +.BR PR_SET_OPENAT_BENEATH " (since Linux 3.??)" +Set the calling process's +.I openat_beneath +bit to the value in +.IR arg2 . +With +.I openat_beneath +set to 1, all +.BR openat (2) +and +.BR open (2) +operations act as though the +.B O_BENEATH +flag is set. +Once set, this bit cannot be unset. +The setting of this bit is inherited by children created by +.BR fork (2) +and +.BR clone (2), +and preserved across +.BR execve (2). +.TP +.BR PR_GET_OPENAT_BENEATH " (since Linux 3.??)" +Return (as the function result) the value of the +.I openat_beneath +bit for the current process. +A value of 0 indicates the regular behavior. +A value of 1 indicates that +.BR openat (2) +and +.BR open (2) +will operate in the implicit +.B O_BENEATH +mode described above. +.TP .BR PR_SET_PDEATHSIG " (since Linux 2.1.57)" Set the parent process death signal of the calling process to \fIarg2\fP (either a signal value
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2.0.0.526.g5318336