/**
* get_name_to_buffer - get the pathname to a buffer ensure dir / is appended
* @path: path to get name for (NOT NULL)
* @flags: flags controlling path lookup
* @buffer: buffer to put name in (NOT NULL)
* @size: size of buffer
* @name: Returns - contains position of path name in @buffer (NOT NULL)
*
* Returns: %0 else error on failure
*/
static int get_name_to_buffer(struct path *path, int flags, char *buffer,
int size, char **name, const char **info)
{
int adjust = (flags & PATH_IS_DIR) ? 1 : 0;
int error = d_namespace_path(path, buffer, size - adjust, name, flags);
if (!error && (flags & PATH_IS_DIR) && (*name)[1] != '\0')
/*
* Append "/" to the pathname. The root directory is a special
* case; it already ends in slash.
*/
strcpy(&buffer[size - 2], "/");
if (info && error) {
if (error == -ENOENT)
*info = "Failed name lookup - deleted entry";
else if (error == -ESTALE)
*info = "Failed name lookup - disconnected path";
else if (error == -ENAMETOOLONG)
*info = "Failed name lookup - name too long";
else
*info = "Failed name lookup";
}
return error;
}
/**
* aa_path_name - get the pathname to a buffer ensure dir / is appended
* @path: path the file (NOT NULL)
* @flags: flags controlling path name generation
* @buffer: buffer to put name in (NOT NULL)
* @name: Returns - the generated path name if !error (NOT NULL)
* @info: Returns - information on why the path lookup failed (MAYBE NULL)
*
* @name is a pointer to the beginning of the pathname (which usually differs
* from the beginning of the buffer), or NULL. If there is an error @name
* may contain a partial or invalid name that can be used for audit purposes,
* but it can not be used for mediation.
*
* We need PATH_IS_DIR to indicate whether the file is a directory or not
* because the file may not yet exist, and so we cannot check the inode's
* file type.
*
* Returns: %0 else error code if could retrieve name
*/
int aa_path_name(struct path *path, int flags, char *buffer, const char **name,
const char **info)
{
char *str = NULL;
int adjust = (flags & PATH_IS_DIR) ? 1 : 0;
int error = d_namespace_path(path, buffer, aa_g_path_max - adjust,
&str, flags);
if (!error && (flags & PATH_IS_DIR) && str[1] != '\0')
/*
* Append "/" to the pathname. The root directory is a special
* case; it already ends in slash.
*/
strcpy(&buffer[aa_g_path_max - 2], "/");
if (info && error) {
if (error == -ENOENT)
*info = "Failed name lookup - deleted entry";
else if (error == -EACCES)
*info = "Failed name lookup - disconnected path";
else if (error == -ENAMETOOLONG)
*info = "Failed name lookup - name too long";
else
*info = "Failed name lookup";
}
*name = str;
return error;
}
/**
* get_name_to_buffer - get the pathname to a buffer ensure dir / is appended
* @path: path to get name for (NOT NULL)
* @flags: flags controlling path lookup
* @buffer: buffer to put name in (NOT NULL)
* @size: size of buffer
* @name: Returns - contains position of path name in @buffer (NOT NULL)
*
* Returns: %0 else error on failure
*/
static int get_name_to_buffer(struct path *path, int flags, char *buffer,
int size, char **name)
{
int adjust = (flags & PATH_IS_DIR) ? 1 : 0;
int error = d_namespace_path(path, buffer, size - adjust, name, flags);
if (!error && (flags & PATH_IS_DIR) && (*name)[1] != '\0')
/*
* Append "/" to the pathname. The root directory is a special
* case; it already ends in slash.
*/
strcpy(&buffer[size - 2], "/");
return error;
}
