24 struct rmtfd {  struct
47 static struct rmtfd rmtfds[MAX_CALLERS];  argument
49 static int storage_populate_shadow_buf(struct rmtfd *rmtfd, const char *file);
75 struct rmtfd *storage_open(unsigned node, const char *path)  in storage_open()
79 	struct rmtfd *rmtfd = NULL;  in storage_open()  local
106 			rmtfd = &rmtfds[i];  in storage_open()
110 	if (!rmtfd) {  in storage_open()
132 		rmtfd->fd = fd;  in storage_open()
133 		rmtfd->shadow_len = 0;  in storage_open()
135 		ret = storage_populate_shadow_buf(rmtfd, fspath);  in storage_open()
145 	rmtfd->node = node;  in storage_open()
146 	rmtfd->partition = part;  in storage_open()
148 	return rmtfd;  in storage_open()
151 void storage_close(struct rmtfd *rmtfd)  in storage_close()  argument
153 	close(rmtfd->fd);  in storage_close()
154 	rmtfd->fd = -1;  in storage_close()
156 	free(rmtfd->shadow_buf);  in storage_close()
157 	rmtfd->shadow_buf = NULL;  in storage_close()
158 	rmtfd->shadow_len = 0;  in storage_close()
160 	rmtfd->partition = NULL;  in storage_close()
163 struct rmtfd *storage_get(unsigned node, int caller_id)  in storage_get()
165 	struct rmtfd *rmtfd;  in storage_get()  local
170 	rmtfd = &rmtfds[caller_id];  in storage_get()
171 	if (rmtfd->node != node)  in storage_get()
174 	return rmtfd;  in storage_get()
177 int storage_get_caller_id(const struct rmtfd *rmtfd)  in storage_get_caller_id()  argument
179 	return rmtfd->id;  in storage_get_caller_id()
182 int storage_get_error(const struct rmtfd *rmtfd)  in storage_get_error()  argument
184 	return rmtfd->dev_error;  in storage_get_error()
197 ssize_t storage_pread(const struct rmtfd *rmtfd, void *buf, size_t nbyte, off_t offset)  in storage_pread()  argument
202 		n = pread(rmtfd->fd, buf, nbyte, offset);  in storage_pread()
204 		n = MIN(nbyte, rmtfd->shadow_len - offset);  in storage_pread()
206 			memcpy(buf, (char*)rmtfd->shadow_buf + offset, n);  in storage_pread()
217 ssize_t storage_pwrite(struct rmtfd *rmtfd, const void *buf, size_t nbyte, off_t offset)  in storage_pwrite()  argument
223 		return pwrite(rmtfd->fd, buf, nbyte, offset);  in storage_pwrite()
231 	if (new_len > rmtfd->shadow_len) {  in storage_pwrite()
232 		new_buf = realloc(rmtfd->shadow_buf, new_len);  in storage_pwrite()
238 		rmtfd->shadow_buf = new_buf;  in storage_pwrite()
239 		rmtfd->shadow_len = new_len;  in storage_pwrite()
242 	memcpy((char*)rmtfd->shadow_buf + offset, buf, nbyte);  in storage_pwrite()
247 static int storage_populate_shadow_buf(struct rmtfd *rmtfd, const char *file)  in storage_populate_shadow_buf()  argument
279 	rmtfd->shadow_buf = buf;  in storage_populate_shadow_buf()
280 	rmtfd->shadow_len = n;  in storage_populate_shadow_buf()