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vfs: Add name to file handle conversion support

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The syscall also return mount id which can be used
to lookup file system specific information such as uuid
in /proc/<pid>/mountinfo

Signed-off-by: Aneesh Kumar K.V <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Aneesh Kumar K.V 2011-01-29 18:43:26 +05:30 • committed by Al Viro
commit 990d6c2d7a
8 changed files with 139 additions and 2 deletions
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12
init/Kconfig
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@ -287,6 +287,18 @@ config BSD_PROCESS_ACCT_V3
for processing it. A preliminary version of these tools is available
at <http://www.gnu.org/software/acct/>.
config FHANDLE
bool "open by fhandle syscalls"
select EXPORTFS
help
If you say Y here, a user level program will be able to map
file names to handle and then later use the handle for
different file system operations. This is useful in implementing
userspace file servers, which now track files using handles instead
of names. The handle would remain the same even if file names
get renamed. Enables open_by_handle_at(2) and name_to_handle_at(2)
syscalls.
config TASKSTATS
bool "Export task/process statistics through netlink (EXPERIMENTAL)"
depends on NET