Eric Lee / smarc-fsl-linux-kernel

06 Nov, 2014

1 commit

  • a3816ab0e   fs: Convert show_fdinfo functions to void ... Browse Code »

    seq_printf functions shouldn't really check the return value.
    Checking seq_has_overflowed() occasionally is used instead.

    Update vfs documentation.

    Link: http://lkml.kernel.org/p/e37e6e7b76acbdcc3bb4ab2a57c8f8ca1ae11b9a.1412031505.git.joe@perches.com

    Cc: David S. Miller
    Cc: Al Viro
    Signed-off-by: Joe Perches
    [ did a few clean ups ]
    Signed-off-by: Steven Rostedt

    Joe Perches
     

18 Dec, 2012

1 commit

  • be77196b8   fs, notify: add procfs fdinfo helper ... Browse Code »

    This allow us to print out fsnotify details such as watchee inode, device,
    mask and optionally a file handle.

    For inotify objects if kernel compiled with exportfs support the output
    will be

    | pos: 0
    | flags: 02000000
    | inotify wd:3 ino:9e7e sdev:800013 mask:800afce ignored_mask:0 fhandle-bytes:8 fhandle-type:1 f_handle:7e9e0000640d1b6d
    | inotify wd:2 ino:a111 sdev:800013 mask:800afce ignored_mask:0 fhandle-bytes:8 fhandle-type:1 f_handle:11a1000020542153
    | inotify wd:1 ino:6b149 sdev:800013 mask:800afce ignored_mask:0 fhandle-bytes:8 fhandle-type:1 f_handle:49b1060023552153

    If kernel compiled without exportfs support, the file handle
    won't be provided but inode and device only.

    | pos: 0
    | flags: 02000000
    | inotify wd:3 ino:9e7e sdev:800013 mask:800afce ignored_mask:0
    | inotify wd:2 ino:a111 sdev:800013 mask:800afce ignored_mask:0
    | inotify wd:1 ino:6b149 sdev:800013 mask:800afce ignored_mask:0

    For fanotify the output is like

    | pos: 0
    | flags: 04002
    | fanotify flags:10 event-flags:0
    | fanotify mnt_id:12 mask:3b ignored_mask:0
    | fanotify ino:50205 sdev:800013 mask:3b ignored_mask:40000000 fhandle-bytes:8 fhandle-type:1 f_handle:05020500fb1d47e7

    To minimize impact on general fsnotify code the new functionality
    is gathered in fs/notify/fdinfo.c file.

    Signed-off-by: Cyrill Gorcunov
    Acked-by: Pavel Emelyanov
    Cc: Oleg Nesterov
    Cc: Andrey Vagin
    Cc: Al Viro
    Cc: Alexey Dobriyan
    Cc: James Bottomley
    Cc: "Aneesh Kumar K.V"
    Cc: Alexey Dobriyan
    Cc: Matthew Helsley
    Cc: "J. Bruce Fields"
    Cc: "Aneesh Kumar K.V"
    Cc: Tvrtko Ursulin
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Cyrill Gorcunov