Messages in this thread Patch in this message | | | From | Joel Savitz <> | Subject | [PATCH v3 2/2] prctl.2: Document the new PR_GET_TASK_SIZE option | Date | Fri, 3 May 2019 14:10:21 -0400 |
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Add a short explanation of the new PR_GET_TASK_SIZE option for the benefit of future generations.
Suggested-by: David Laight <David.Laight@aculab.com> Signed-off-by: Joel Savitz <jsavitz@redhat.com> --- man2/prctl.2 | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/man2/prctl.2 b/man2/prctl.2 index 06d8e13c7..cae582726 100644 --- a/man2/prctl.2 +++ b/man2/prctl.2 @@ -49,6 +49,7 @@ .\" 2013-01-10 Kees Cook, document PR_SET_PTRACER .\" 2012-02-04 Michael Kerrisk, document PR_{SET,GET}_CHILD_SUBREAPER .\" 2014-11-10 Dave Hansen, document PR_MPX_{EN,DIS}ABLE_MANAGEMENT +.\" 2019-05-03 Joel Savitz, document PR_GET_TASK_SIZE .\" .\" .TH PRCTL 2 2019-03-06 "Linux" "Linux Programmer's Manual" @@ -1375,6 +1376,15 @@ system call on Tru64). for information on versions and architectures) Return unaligned access control bits, in the location pointed to by .IR "(unsigned int\ *) arg2" . +.TP +.B PR_GET_TASK_SIZE +Copy the value of TASK_SIZE to the userspace address in +.IR "(unsigned long\ *) arg2" . +This value represents the highest virtual address available +to the current process. Return +.B EFAULT +if this operation fails. + .SH RETURN VALUE On success, .BR PR_GET_DUMPABLE , -- 2.18.1
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