frefid_t glk_fileref_create_temp(glui32 usage, glui32 rock)
{
frefid_t fref = create_by_name(usage, tmpnam(NULL), rock);
nanoglk_log("glk_fileref_create_temp(%d, %d) => %p", usage, rock, fref);
fref->disprock = nanoglk_call_regi_obj(fref, gidisp_Class_Fileref);
return fref;
}
/**
* securityfs_create_file - create a file in the securityfs filesystem
*
* @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 paramater is NULL, then the
* file will be created in the root of the securityfs filesystem.
* @data: a pointer to something that the caller will want to get to later
* on. The inode.u.generic_ip pointer will point to this value on
* the open() call.
* @fops: a pointer to a struct file_operations that should be used for
* this file.
*
* This is the basic "create a file" function for securityfs. It allows for a
* wide range of flexibility in createing a file, or a directory (if you
* want to create a directory, the securityfs_create_dir() function is
* recommended to be used instead.)
*
* This function will return a pointer to a dentry if it succeeds. This
* pointer must be passed to the securityfs_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 securityfs 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.
*/
struct dentry *securityfs_create_file(const char *name, mode_t mode,
struct dentry *parent, void *data,
struct file_operations *fops)
{
struct dentry *dentry = NULL;
int error;
pr_debug("securityfs: creating file '%s'\n",name);
error = simple_pin_fs("securityfs", &mount, &mount_count);
if (error) {
dentry = ERR_PTR(error);
goto exit;
}
error = create_by_name(name, mode, parent, &dentry);
if (error) {
dentry = ERR_PTR(error);
simple_release_fs(&mount, &mount_count);
goto exit;
}
if (dentry->d_inode) {
if (fops)
dentry->d_inode->i_fop = fops;
if (data)
dentry->d_inode->u.generic_ip = data;
}
exit:
return dentry;
}
frefid_t glk_fileref_create_by_name(glui32 usage, char *name, glui32 rock)
{
frefid_t fref = create_by_name(usage, name, rock);
nanoglk_log("glk_fileref_create_by_name(%d, '%s', %d) => %p",
usage, name, rock, fref);
fref->disprock = nanoglk_call_regi_obj(fref, gidisp_Class_Fileref);
return fref;
}
frefid_t glk_fileref_create_from_fileref(glui32 usage, frefid_t fref,
glui32 rock)
{
frefid_t nfref = create_by_name(usage, fref->name, rock);
nanoglk_log("glk_fileref_create_from_fileref(%d, %p, %d) => %p",
usage, fref, rock, nfref);
fref->disprock = nanoglk_call_regi_obj(fref, gidisp_Class_Fileref);
return nfref;
}