On Thu, Dec 30, 2010 at 7:20 PM, Shachar Shemesh <shac...@debian.org> wrote: >> Depending on /proc is probably not reasonable. >> Are you sure it will be atomic? ;) >> >> > > open old file, get fd (we'll assume it's 5). Do readlink on /proc/self/fd/5, > and get file's real path. Do everything in said path. It's atomic, in the > sense that the determining point in time is the point in which you opened > the old file. >> >> How do you preserve owner (as non-root)? >> >> > > I thought I answered that. Best effort. You perform the chown, but do not > bother with the return code. If it succeeded, great. If not, well, you did > your best.
Ah. Another regression. >> >> The reason I asked for a kernelland solution is because it's hard if >> not impossible to do properly in userland. But some kernel devs (Ted >> and others) don't agree. They reason that the desire to preserve all >> meta-data isn't reasonable by itself. >> > > I'm with Henrique on that one. I am more concerned with the amount of > non-Posix code that needs to go into this than preserving all attributes. With kernel support you would only need a single non-POSIX flag. Please be sure to document all assumptions / limitations of your variant. Olaf -- To UNSUBSCRIBE, email to debian-devel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/aanlktimzgfzwpj8phtevdycbxwwd5s7pp+enlcpi+...@mail.gmail.com