.TH "_devfs_descend" 9 "_devfs_descend" "25 May 1998" "Kernel Hacker's Manual" LINUX
.SH NAME
_devfs_descend \-  Descend down a tree using the next component name.
.SH SYNOPSIS
.B "struct devfs_entry *" _devfs_descend
.BI "(struct devfs_entry *" dir ","
.BI "const char *" name ","
.BI "int " namelen ","
.BI "int *" next_pos ");"
.SH ARGUMENTS
.IP "dir" 12
  The directory to search.
.IP "name" 12
  The component name to search for.
.IP "namelen" 12
  The length of name.
.IP "next_pos" 12
  The position of the next '/' or '\0' is written here.
.SH "DESCRIPTION"
Descend into a directory, searching for a component. This function forms
the core of a tree-walking algorithm. The directory will be locked.
The devfs entry corresponding to the component is returned. If there is
no matching entry, NULL is returned.
An implicit \fBdevfs_get\fP is performed on the returned entry.