282 static int read_block(const MtdPartition *partition, int fd, char *data)  in read_block()  argument
301                     TEMP_FAILURE_RETRY(read(fd, data, size)) != size) {  in read_block()
328 ssize_t mtd_read_data(MtdReadContext *ctx, char *data, size_t len)  in mtd_read_data()  argument
335             memcpy(data + read, ctx->buffer + ctx->consumed, copy);  in mtd_read_data()
343             if (read_block(ctx->partition, ctx->fd, data + read)) return -1;  in mtd_read_data()
406 static int write_block(MtdWriteContext *ctx, const char *data)  in write_block()  argument
441                 TEMP_FAILURE_RETRY(write(fd, data, size)) != size) {  in write_block()
453             if (memcmp(data, verify, size) != 0) {  in write_block()
478 ssize_t mtd_write_data(MtdWriteContext *ctx, const char *data, size_t len)  in mtd_write_data()  argument
486             memcpy(ctx->buffer + ctx->stored, data + wrote, copy);  in mtd_write_data()
499             if (write_block(ctx, data + wrote)) return -1;  in mtd_write_data()