xen/tools/libs/foreignmemory/Makefile at e0c9bd3d67e05508557f58ca4d5ee2b542ea2903 - xen - Xen Gitea: Git with a cup of tea

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Andrew Cooper 75fc859985 tools/foreignmem: Support querying the size of a resource

With the Xen side of this interface (soon to be) fixed to return real sizes,
userspace needs to be able to make the query.

Introduce xenforeignmemory_resource_size() for the purpose, bumping the
library minor version.

Update both all osdep_xenforeignmemory_map_resource() implementations to
understand size requests, skip the mmap() operation, and copy back the
nr_frames field.

For NetBSD, also fix up the ioctl() error path to issue an unmap(), which was
overlooked by c/s 4a64e2bb39 "libs/foreignmemory: Implement on NetBSD".

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Paul Durrant <paul@xen.org>
Acked-by: Wei Liu <wl@xen.org>

2021-01-28 13:08:11 +00:00

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Makefile

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 XEN_ROOT = $(CURDIR)/../../..
 include $(XEN_ROOT)/tools/Rules.mk
 MAJOR    = 1
 MINOR    = 4
 SRCS-y                 += core.c
 SRCS-$(CONFIG_Linux)   += linux.c
 SRCS-$(CONFIG_FreeBSD) += freebsd.c
 SRCS-$(CONFIG_SunOS)   += compat.c solaris.c
 SRCS-$(CONFIG_NetBSD)  += netbsd.c
 SRCS-$(CONFIG_MiniOS)  += minios.c
 include $(XEN_ROOT)/tools/libs/libs.mk