• De Silva, Chandimal add 188 for unbroken sixth wicket
• Sri Lanka reach 214-5 at close

De Silva, playing only his third test match, got to his hundred with a boundary off Smith's part-time leg-spin and followed it up with an emotional celebration. He ended the day having hit 16 fours in his 240-ball knock.

Australia had a few half chances but failed to convert them.

Paceman Suranga Lakmal recovered from a hamstring injury to replace Vishwa Fernando in the only change for the hosts from the team that beat Australia by 229 runs in Galle.

Australia, whose top ranking in the format is at stake, dropped opening batsman Joe Burns and number three Usman Khawaja from a side that have struggled against the hosts' spinners.

Left-handed batsman Shaun Marsh and all-rounder Moises Henriques, who last played a test match in March 2013, were drafted in.