d_add_ci(9) [suse man page]

D_ADD_CI(9)							   The Linux VFS						       D_ADD_CI(9)

NAME

       d_add_ci - lookup or allocate new dentry with case-exact name

SYNOPSIS

       struct dentry * d_add_ci(struct dentry * dentry, struct inode * inode, struct qstr * name);

ARGUMENTS

       dentry
	   the negative dentry that was passed to the parent's lookup func

       inode
	   the inode case-insensitive lookup has found

       name
	   the case-exact name to be associated with the returned dentry

DESCRIPTION

       This is to avoid filling the dcache with case-insensitive names to the same inode, only the actual correct case is stored in the dcache for
       case-insensitive filesystems.

       For a case-insensitive lookup match and if the the case-exact dentry already exists in in the dcache, use it and return it.

       If no entry exists with the exact case name, allocate new dentry with the exact case, and return the spliced entry.

COPYRIGHT

Kernel Hackers Manual 2.6.					     July 2010							       D_ADD_CI(9)

DEBUGFS_CREATE_U8(9)					      The debugfs filesystem					      DEBUGFS_CREATE_U8(9)

NAME

       debugfs_create_u8 - create a debugfs file that is used to read and write an unsigned 8-bit value

SYNOPSIS

       struct dentry * debugfs_create_u8(const char * name, mode_t mode, struct dentry * parent, u8 * value);

ARGUMENTS

       name
	   a pointer to a string containing the name of the file to create.

       mode
	   the permission that the file should have

       parent
	   a pointer to the parent dentry for this file. This should be a directory dentry if set. If this parameter is NULL, then the file will
	   be created in the root of the debugfs filesystem.

       value
	   a pointer to the variable that the file should read to and write from.

DESCRIPTION

       This function creates a file in debugfs with the given name that contains the value of the variable value. If the mode variable is so set,
       it can be read from, and written to.

       This function will return a pointer to a dentry if it succeeds. This pointer must be passed to the debugfs_remove function when the file is
       to be removed (no automatic cleanup happens if your module is unloaded, you are responsible here.) If an error occurs, NULL will be
       returned.

       If debugfs is not enabled in the kernel, the value -ENODEV will be returned. It is not wise to check for this value, but rather, check for
       NULL or !NULL instead as to eliminate the need for #ifdef in the calling code.

COPYRIGHT

Kernel Hackers Manual 2.6.					     July 2010						      DEBUGFS_CREATE_U8(9)