Can you not do an ordinary open without O_NOFOLLOW and then lstat the filename? | Hacker News

Hacker Newsnew | past | comments | ask | show | jobs | submit

		adrianratnapala on July 22, 2016 \| parent \| context \| favorite \| on: Spawn your shell like it's the 90s again Can you not do an ordinary open without O_NOFOLLOW and then lstat the filename?

cyphar on July 22, 2016 [–]

Race condition again. The file could be unlinked. fstat is the only safe way of getting stat information for an open file.

loeg on July 23, 2016 | [–]

Right. The right thing to do is open() with NOFOLLOW, then fstat the resulting fd. Then check for S_ISLNK(st_mode).

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact