• Ram Pai's avatar
    [patch 6/7] vfs: mountinfo: add /proc/<pid>/mountinfo · 2d4d4864
    Ram Pai authored
    [mszeredi@suse.cz] rewrite and split big patch into managable chunks
    
    /proc/mounts in its current form lacks important information:
    
     - propagation state
     - root of mount for bind mounts
     - the st_dev value used within the filesystem
     - identifier for each mount and it's parent
    
    It also suffers from the following problems:
    
     - not easily extendable
     - ambiguity of mountpoints within a chrooted environment
     - doesn't distinguish between filesystem dependent and independent options
     - doesn't distinguish between per mount and per super block options
    
    This patch introduces /proc/<pid>/mountinfo which attempts to address
    all these deficiencies.
    
    Code shared between /proc/<pid>/mounts and /proc/<pid>/mountinfo is
    extracted into separate functions.
    
    Thanks to Al Viro for the help in getting the design right.
    Signed-off-by: default avatarRam Pai <linuxram@us.ibm.com>
    Signed-off-by: default avatarMiklos Szeredi <mszeredi@suse.cz>
    Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
    2d4d4864
mnt_namespace.h 1.11 KB