Alan Cox wrote:
Looking at the code, it seems to me that format_corename() is appending
.pid, regardless if !core_uses_pid and corename[0]=='|', in which case
it creates an invalid path for call_usermodehelper_pipe().
Bug in the code, or bug in my methods?
This looks somewhat better and might do the trick. Also fixes a very very
obscure security corner case. If you change core pattern to start with
the program name then the user can run a program called "|myevilhack" as
it stands. The patch checks for "|" in the pattern not the output and
doesn't nail a pid on to a piped name.
<snip>
Works great now. Queue this sucker up!
# cat /proc/sys/kernel/core_pattern
|/home/caker/bin/dumper.pl
# ./linux
<blah blah>
Segmentation fault (core dumped)
# file /tmp/dumper.out
/tmp/dumper.out: ELF 32-bit LSB core file Intel 80386, version 1
(SYSV), SVR4-style
Thanks for everyone's help.
-Chris
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