tree bab014e7ad404ca3e36ae650f170f02df05705cd
parent 5ddd36b9c59887c6416e21daf984fbdd9b1818df
author Stephen Wilson <wilsons@start.ca> 1300045761 -0400
committer Al Viro <viro@zeniv.linux.org.uk> 1300912618 -0400

proc: disable mem_write after exec

This change makes mem_write() observe the same constraints as mem_read().  This
is particularly important for mem_write as an accidental leak of the fd across
an exec could result in arbitrary modification of the target process' memory.
IOW, /proc/pid/mem is implicitly close-on-exec.

Signed-off-by: Stephen Wilson <wilsons@start.ca>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>