* Palmer Dabbelt:
This patch set adds fchmodat4(), a new syscall. The actual
implementation is super simple: essentially it's just the same as
fchmodat(), but LOOKUP_FOLLOW is conditionally set based on the flags.
I've attempted to make this match "man 2 fchmodat" as closely as
possible, which says EINVAL is returned for invalid flags (as opposed to
ENOTSUPP, which is currently returned by glibc for AT_SYMLINK_NOFOLLOW).
I have a sketch of a glibc patch that I haven't even compiled yet, but
seems fairly straight-forward:
What's the status here? We'd really like to see this system call in the
kernel because our emulation in glibc has its problems (especially if
/proc is not mounted).
Thanks,
Florian