munmap.2: Add STANDARDS and note about portability

POSIX used to specify that munmap shall fail with EINVAL if the addr
argument is not a multiple of the page size, but that was changed to
may fail.

munmap.2: Add STANDARDS and note about portability

POSIX used to specify that munmap shall fail with EINVAL if the addr
argument is not a multiple of the page size, but that was changed to
may fail. Note that we conform to contemporary POSIX and include a
brief note for portable programs.

Reviewed by: brooks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D48481

show more ...

munmap.2: Remove EINVAL for negative len

len is unsigned (it is size_t), so cannot be negative.

Sponsored by: The FreeBSD Foundation

munmap.2: Unaligned addresses do not return error

We previously claimed that non-page-aligned addresses would return
EINVAL, but the address is in fact rounded down to the page boundary.

Reported b

munmap.2: Unaligned addresses do not return error

We previously claimed that non-page-aligned addresses would return
EINVAL, but the address is in fact rounded down to the page boundary.

Reported by: Harald Eilertsen <haraldei@anduin.net>
Reviewed by: brooks
Sponsored by: The FreeBSD Foundation
Fixes: dabee6fecc67 ("kern_descrip.c: add fdshare()/fdcopy()")
Differential Revision: https://reviews.freebsd.org/D48465

show more ...

libsys: relocate implementations and manpages

Remove core system call implementations and documentation to lib/libsys
and lib/libsys/<arch> from lib/libc/sys and lib/libc/<arch>/<sys>.
Update paths

libsys: relocate implementations and manpages

Remove core system call implementations and documentation to lib/libsys
and lib/libsys/<arch> from lib/libc/sys and lib/libc/<arch>/<sys>.
Update paths to allow libc to find them in their new home.

Reviewed by: kib, emaste, imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/908

show more ...