35 int dfs_romfs_ioctl(struct dfs_fd *file, int cmd, void *args)  in dfs_romfs_ioctl()  argument
114                     /* return file dirent */  in dfs_romfs_lookup()
131 int dfs_romfs_read(struct dfs_fd *file, void *buf, size_t count)  in dfs_romfs_read()  argument
136     dirent = (struct romfs_dirent *)file->data;  in dfs_romfs_read()
144     if (count < file->size - file->pos)  in dfs_romfs_read()
147         length = file->size - file->pos;  in dfs_romfs_read()
150         memcpy(buf, &(dirent->data[file->pos]), length);  in dfs_romfs_read()
152     /* update file current position */  in dfs_romfs_read()
153     file->pos += length;  in dfs_romfs_read()
158 int dfs_romfs_lseek(struct dfs_fd *file, off_t offset)  in dfs_romfs_lseek()  argument
160     if (offset <= file->size)  in dfs_romfs_lseek()
162         file->pos = offset;  in dfs_romfs_lseek()
163         return file->pos;  in dfs_romfs_lseek()
169 int dfs_romfs_close(struct dfs_fd *file)  in dfs_romfs_close()  argument
171     file->data = NULL;  in dfs_romfs_close()
175 int dfs_romfs_open(struct dfs_fd *file)  in dfs_romfs_open()  argument
182     fs = (struct dfs_filesystem *)file->data;  in dfs_romfs_open()
188     if (file->flags & (O_CREAT | O_WRONLY | O_APPEND | O_TRUNC | O_RDWR))  in dfs_romfs_open()
191     dirent = dfs_romfs_lookup(root_dirent, file->path, &size);  in dfs_romfs_open()
195     /* entry is a directory file type */  in dfs_romfs_open()
198         if (!(file->flags & O_DIRECTORY))  in dfs_romfs_open()
203         /* entry is a file, but open it as a directory */  in dfs_romfs_open()
204         if (file->flags & O_DIRECTORY)  in dfs_romfs_open()
208     file->data = dirent;  in dfs_romfs_open()
209     file->size = size;  in dfs_romfs_open()
210     file->pos = 0;  in dfs_romfs_open()
243 int dfs_romfs_getdents(struct dfs_fd *file, struct dirent *dirp, uint32_t count)  in dfs_romfs_getdents()  argument
250     dirent = (struct romfs_dirent *)file->data;  in dfs_romfs_getdents()
264     for (index = 0; index < count && file->pos < file->size; index ++)  in dfs_romfs_getdents()
268         sub_dirent = &dirent[file->pos];  in dfs_romfs_getdents()
282         ++ file->pos;  in dfs_romfs_getdents()
317     /* register rom file system */  in dfs_romfs_init()