Cyrill Gorcunov
55985dd72a
procfs: add ability to plug in auxiliary fdinfo providers
...
This patch brings ability to print out auxiliary data associated with
file in procfs interface /proc/pid/fdinfo/fd.
In particular further patches make eventfd, evenpoll, signalfd and
fsnotify to print additional information complete enough to restore
these objects after checkpoint.
To simplify the code we add show_fdinfo callback inside struct
file_operations (as Al and Pavel are proposing).
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org >
Acked-by: Pavel Emelyanov <xemul@parallels.com >
Cc: Oleg Nesterov <oleg@redhat.com >
Cc: Andrey Vagin <avagin@openvz.org >
Cc: Al Viro <viro@ZenIV.linux.org.uk >
Cc: Alexey Dobriyan <adobriyan@gmail.com >
Cc: James Bottomley <jbottomley@parallels.com >
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com >
Cc: Alexey Dobriyan <adobriyan@gmail.com >
Cc: Matthew Helsley <matt.helsley@gmail.com >
Cc: "J. Bruce Fields" <bfields@fieldses.org >
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com >
Cc: Tvrtko Ursulin <tvrtko.ursulin@onelan.co.uk >
Signed-off-by: Andrew Morton <akpm@linux-foundation.org >
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org >
2012-12-17 17:15:27 -08:00
Al Viro
c6f3d81115
don't leak O_CLOEXEC into ->f_flags
...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk >
2012-09-26 21:10:01 -04:00
Cyrill Gorcunov
ddd3e0771b
procfs: Convert /proc/pid/fdinfo/ handling routines to seq-file v2
...
This patch converts /proc/pid/fdinfo/ handling routines to seq-file which
is needed to extend seq operations and plug in auxiliary fdinfo provides
from subsystems like eventfd/eventpoll/fsnotify.
Note the proc_fd_link no longer call for proc_fd_info, simply because
the guts of proc_fd_info() got merged into ->show() of that seq_file
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk >
2012-09-26 21:10:01 -04:00
Cyrill Gorcunov
faf60af17f
procfs: Move /proc/pid/fd[info] handling code to fd.[ch]
...
This patch prepares the ground for further extension of
/proc/pid/fd[info] handling code by moving fdinfo handling
code into fs/proc/fd.c.
I think such move makes both fs/proc/base.c and fs/proc/fd.c
easier to read.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org >
Acked-by: Pavel Emelyanov <xemul@parallels.com >
CC: Al Viro <viro@ZenIV.linux.org.uk >
CC: Alexey Dobriyan <adobriyan@gmail.com >
CC: Andrew Morton <akpm@linux-foundation.org >
CC: James Bottomley <jbottomley@parallels.com >
CC: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com >
CC: Alexey Dobriyan <adobriyan@gmail.com >
CC: Matthew Helsley <matt.helsley@gmail.com >
CC: "J. Bruce Fields" <bfields@fieldses.org >
CC: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com >
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk >
2012-09-26 21:10:01 -04:00
