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98f842e675
Assign a unique proc inode to each namespace, and use that inode number to ensure we only allocate at most one proc inode for every namespace in proc. A single proc inode per namespace allows userspace to test to see if two processes are in the same namespace. This has been a long requested feature and only blocked because a naive implementation would put the id in a global space and would ultimately require having a namespace for the names of namespaces, making migration and certain virtualization tricks impossible. We still don't have per superblock inode numbers for proc, which appears necessary for application unaware checkpoint/restart and migrations (if the application is using namespace file descriptors) but that is now allowd by the design if it becomes important. I have preallocated the ipc and uts initial proc inode numbers so their structures can be statically initialized. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> |
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.. | ||
array.c | ||
base.c | ||
cmdline.c | ||
consoles.c | ||
cpuinfo.c | ||
devices.c | ||
fd.c | ||
fd.h | ||
generic.c | ||
inode.c | ||
internal.h | ||
interrupts.c | ||
Kconfig | ||
kcore.c | ||
kmsg.c | ||
loadavg.c | ||
Makefile | ||
meminfo.c | ||
mmu.c | ||
namespaces.c | ||
nommu.c | ||
page.c | ||
proc_devtree.c | ||
proc_net.c | ||
proc_sysctl.c | ||
proc_tty.c | ||
root.c | ||
self.c | ||
softirqs.c | ||
stat.c | ||
task_mmu.c | ||
task_nommu.c | ||
uptime.c | ||
version.c | ||
vmcore.c |