dev/drm2/drm_auth.c

44  * Find the file with the given magic number.
47  * \param magic magic number.
50  * the one with matching magic number, while holding the drm_device::struct_mutex
53 static struct drm_file *drm_find_file(struct drm_master *master, drm_magic_t magic)
61 	if (!drm_ht_find_item(&master->magiclist, (unsigned long)magic, &hash)) {
70  * Adds a magic number.
74  * \param magic magic number.
77  * associated the magic number hash key in drm_device::magiclist, while holding
81 			 drm_magic_t magic)
85 	DRM_DEBUG("%d\n", magic);
91 	entry->hash_item.key = (unsigned long)magic;
101  * Remove a magic number.
104  * \param magic magic number.
106  * Searches and unlinks the entry in drm_device::magiclist with the magic
109 int drm_remove_magic(struct drm_master *master, drm_magic_t magic)
115 	DRM_DEBUG("%d\n", magic);
118 	if (drm_ht_find_item(&master->magiclist, (unsigned long)magic, &hash)) {
133  * Get a unique magic number (ioctl).
141  * If there is a magic number in drm_file::magic then use it, otherwise
142  * searches an unique non-zero magic number and add it associating it with \p
145  * struct drm_file::magic and struct drm_magic_entry::priv.
152 	/* Find unique magic */
153 	if (file_priv->magic) {
154 		auth->magic = file_priv->magic;
160 			auth->magic = sequence++;
162 		} while (drm_find_file(file_priv->master, auth->magic));
163 		file_priv->magic = auth->magic;
164 		drm_add_magic(file_priv->master, file_priv, auth->magic);
167 	DRM_DEBUG("%u\n", auth->magic);
173  * Authenticate with a magic.
181  * Checks if \p file_priv is associated with the magic number passed in \arg.
183  * struct drm_file::magic and struct drm_magic_entry::priv.
191 	DRM_DEBUG("%u\n", auth->magic);
192 	if ((file = drm_find_file(file_priv->master, auth->magic))) {
194 		drm_remove_magic(file_priv->master, auth->magic);