Vitaliy,
As I told you directly last week, proposing changes in anticipation of
future work requires some sort of plan about that future work. Without
some sort of model for locking the access paths, it's impossible to judge
whether the proposed change is useful or pointless.
On Fri, 8 May
I have questions about sysctl_file():
1. Looks like sysctl_file() should do the same things for KERN_FILE_BYPID and
KERN_FILE_BYUID cases. But pr->ps_textvp (vnode of executable) will be copied
for KERN_FILE_BYPID case only. Is this copying missing for KERN_FILE_BYUID?
2. (arg < -1) check looks be
Unfortunately, in 2 cases this diff will increase "needed" variable
for non existing files too. This is the fixed version.
Index: sys/kern/kern_sysctl.c
===
RCS file: /cvs/src/sys/kern/kern_sysctl.c,v
retrieving revision 1.284
diff -u
sysctl_file() has 2 cases: KERN_FILE_BY_PID and KERN_FILE_BYUID.
In these cases sysctl_file() can access file descriptor table from
other processes. File descriptor table of caller process can be
accessed by other threads too. The file instances from file
descriptor table will be accessed too. So f
