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prctl.2: Minor restructuring of text for PR_SET_DUMPABLE 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2015-01-19 12:35:21 +01:00
parent 13f296bcc4
commit 4a3713a498
1 changed files with 6 additions and 3 deletions
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9
man2/prctl.2
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@ -140,12 +140,14 @@ in the location pointed to by
Set the state of the flag determining whether core dumps are produced
for the calling process upon delivery of a signal whose default behavior is
to produce a core dump.
(Normally, this flag is set for a process by default, but it is cleared
Normally, this flag is set for a process by default, but it is cleared
when a set-user-ID or set-group-ID program,
or a program that has file capabilities associated with it (see
.BR capabilities (7)),
is executed and also by
various system calls that manipulate process UIDs and GIDs).
is executed.
It is also set by various system calls that manipulate process UIDs and GIDs.
In kernels up to and including 2.6.12,
.I arg2
must be either 0 (process is not dumpable) or 1 (process is dumpable).
@ -161,6 +163,7 @@ for security reasons, this feature has been removed.
.I /proc/sys/fs/suid_dumpable
in
.BR proc (5).)
Processes that are not dumpable can not be attached via
.BR ptrace (2)
.BR PTRACE_ATTACH .