46 static int file_tag_cmp(const struct file *f, const uint8_t *tag,  in file_tag_cmp()  argument
49 	if (f->taglen != taglen)  in file_tag_cmp()
51 	return memcmp(tag, f->tag, taglen);  in file_tag_cmp()
57 	struct file *f = NULL;  in file_find_tag_unlocked()  local
59 	TAILQ_FOREACH(f, &file_head, link)  in file_find_tag_unlocked()
60 		if (!file_tag_cmp(f, tag, taglen))  in file_find_tag_unlocked()
61 			return f;  in file_find_tag_unlocked()
66 static void file_free(struct file *f)  in file_free()  argument
68 	mutex_destroy(&f->mu);  in file_free()
70 	while (!SLIST_EMPTY(&f->slice_head)) {  in file_free()
71 		struct file_slice_elem *fse = SLIST_FIRST(&f->slice_head);  in file_free()
73 		SLIST_REMOVE_HEAD(&f->slice_head, link);  in file_free()
78 	free(f);  in file_free()
81 TEE_Result file_add_slice(struct file *f, struct fobj *fobj,  in file_add_slice()  argument
88 	if (file_find_slice(f, page_offset))  in file_add_slice()
104 	SLIST_INSERT_HEAD(&f->slice_head, fse, link);  in file_add_slice()
109 struct file *file_get(struct file *f)  in file_get()  argument
111 	if (f && !refcount_inc(&f->refc))  in file_get()
114 	return f;  in file_get()
119 	struct file *f = NULL;  in file_get_by_tag()  local
121 	if (taglen > sizeof(f->tag))  in file_get_by_tag()
147 	f = file_find_tag_unlocked(tag, taglen);  in file_get_by_tag()
148 	if (f && refcount_inc(&f->refc))  in file_get_by_tag()
151 	f = calloc(1, sizeof(*f));  in file_get_by_tag()
152 	if (!f)  in file_get_by_tag()
154 	memcpy(f->tag, tag, taglen);  in file_get_by_tag()
155 	f->taglen = taglen;  in file_get_by_tag()
156 	refcount_set(&f->refc, 1);  in file_get_by_tag()
157 	mutex_init(&f->mu);  in file_get_by_tag()
158 	SLIST_INIT(&f->slice_head);  in file_get_by_tag()
159 	TAILQ_INSERT_HEAD(&file_head, f, link);  in file_get_by_tag()
164 	return f;  in file_get_by_tag()
167 void file_put(struct file *f)  in file_put()  argument
169 	if (f && refcount_dec(&f->refc)) {  in file_put()
171 		TAILQ_REMOVE(&file_head, f, link);  in file_put()
174 		file_free(f);  in file_put()
179 struct file_slice *file_find_slice(struct file *f, unsigned int page_offset)  in file_find_slice()  argument
183 	assert(f->mu.state);  in file_find_slice()
185 	SLIST_FOREACH(fse, &f->slice_head, link) {  in file_find_slice()
196 void file_lock(struct file *f)  in file_lock()  argument
198 	mutex_lock(&f->mu);  in file_lock()
201 bool file_trylock(struct file *f)  in file_trylock()  argument
203 	return mutex_trylock(&f->mu);  in file_trylock()
206 void file_unlock(struct file *f)  in file_unlock()  argument
208 	mutex_unlock(&f->mu);  in file_unlock()