$lx_dentry_name() generates a full VFS path from a given dentry pointer, and $lx_i_dentry() returns the dentry pointer associated with the given inode pointer, if there is one. Signed-off-by: Glenn Washburn <development@xxxxxxxxxxxxxxx> --- scripts/gdb/linux/vfs.py | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/scripts/gdb/linux/vfs.py b/scripts/gdb/linux/vfs.py index 62d4f9ad7d79..c77b9ce75f6d 100644 --- a/scripts/gdb/linux/vfs.py +++ b/scripts/gdb/linux/vfs.py @@ -13,6 +13,9 @@ # This work is licensed under the terms of the GNU GPL version 2. # +import gdb +from linux import utils + def dentry_name(d): parent = d['d_parent'] @@ -20,3 +23,37 @@ def dentry_name(d): return "" p = dentry_name(d['d_parent']) + "/" return p + d['d_iname'].string() + +class DentryName(gdb.Function): + """Return string of the full path of a dentry. + +$lx_dentry_name(PTR): Given PTR to a dentry struct, return a string +of the full path of the dentry.""" + + def __init__(self): + super(DentryName, self).__init__("lx_dentry_name") + + def invoke(self, dentry_ptr): + return dentry_name(dentry_ptr) + +DentryName() + + +dentry_type = utils.CachedType("struct dentry") + +class InodeDentry(gdb.Function): + """Return dentry pointer for inode. + +$lx_i_dentry(PTR): Given PTR to an inode struct, return a pointer to +the associated dentry struct, if there is one.""" + + def __init__(self): + super(InodeDentry, self).__init__("lx_i_dentry") + + def invoke(self, inode_ptr): + d_u = inode_ptr["i_dentry"]["first"] + if d_u == 0: + return "" + return utils.container_of(d_u, dentry_type.get_type().pointer(), "d_u") + +InodeDentry() -- 2.30.2