[Libguestfs] [PATCH v3 0/4] file: Zero for block devices and older file systems

This version addresses some of the comments on v2. Changes since v2: - file_zero: Add missing space in function call - is_aligned: Assert that align is indeed a power of 2 - Spelling in commit message Not changed: - Eric commented that spacing was off: https://www.redhat.com/archives/libguestfs/2018-August/msg00113.html but I could not find anything wrong. - Eric asked if ioctl.h will cause grief on BSD compilation: https://www.redhat.com/archives/libguestfs/2018-August/msg00116.html I tested with FreeBSD 11.0 and 10.3 and there is no issue. I also look at NetBSD and OpenBSD source, and in alll ioctl() is defined in ioctl.h. v2 was here: https://www.redhat.com/archives/libguestfs/2018-August/msg00041.html Nir Soffer (4): file: Avoid unsupported fallocate() calls file: Support zero without ZERO_RANGE common: Add isaligned helper module file: Zero for block devices on old kernels common/include/isaligned.h | 51 +++++++++++ plugins/file/Makefile.am | 3 +- plugins/file/file.c | 182 +++++++++++++++++++++++++++++-------- 3 files changed, 197 insertions(+), 39 deletions(-) create mode 100644 common/include/isaligned.h -- 2.17.1