[PATCH 13/26] xentoolcore_restrict_all: Implement for libxenforeignmemory

From: Ian Jackson <ian.jackson@eu.citrix.com>
To: xen-devel@lists.xensource.com
Cc: Ross Lagerwall <ross.lagerwall@citrix.com>,
	Stefano Stabellini <sstabellini@kernel.org>,
	Wei Liu <wei.liu2@citrix.com>,
	Ian Jackson <Ian.Jackson@eu.citrix.com>
Subject: [PATCH 13/26] xentoolcore_restrict_all: Implement for libxenforeignmemory
Date: Mon, 9 Oct 2017 16:57:15 +0100	[thread overview]
Message-ID: <1507564648-7580-14-git-send-email-ian.jackson@eu.citrix.com> (raw)
In-Reply-To: <1507564648-7580-1-git-send-email-ian.jackson@eu.citrix.com>

Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
---
 tools/Rules.mk                                  |  2 +-
 tools/libs/foreignmemory/Makefile               |  4 ++--
 tools/libs/foreignmemory/core.c                 | 15 +++++++++++++++
 tools/libs/foreignmemory/private.h              |  3 +++
 tools/libs/foreignmemory/xenforeignmemory.pc.in |  2 +-
 5 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/tools/Rules.mk b/tools/Rules.mk
index 71037a1..7dd126a 100644
--- a/tools/Rules.mk
+++ b/tools/Rules.mk
@@ -124,7 +124,7 @@ LDLIBS_libxencall = $(SHDEPS_libxencall) $(XEN_LIBXENCALL)/libxencall$(libextens
 SHLIB_libxencall  = $(SHDEPS_libxencall) -Wl,-rpath-link=$(XEN_LIBXENCALL)
 
 CFLAGS_libxenforeignmemory = -I$(XEN_LIBXENFOREIGNMEMORY)/include $(CFLAGS_xeninclude)
-SHDEPS_libxenforeignmemory =
+SHDEPS_libxenforeignmemory = $(SHLIB_libxentoolcore)
 LDLIBS_libxenforeignmemory = $(SHDEPS_libxenforeignmemory) $(XEN_LIBXENFOREIGNMEMORY)/libxenforeignmemory$(libextension)
 SHLIB_libxenforeignmemory  = $(SHDEPS_libxenforeignmemory) -Wl,-rpath-link=$(XEN_LIBXENFOREIGNMEMORY)
 
diff --git a/tools/libs/foreignmemory/Makefile b/tools/libs/foreignmemory/Makefile
index ab7f873..cbe815f 100644
--- a/tools/libs/foreignmemory/Makefile
+++ b/tools/libs/foreignmemory/Makefile
@@ -7,7 +7,7 @@ SHLIB_LDFLAGS += -Wl,--version-script=libxenforeignmemory.map
 
 CFLAGS   += -Werror -Wmissing-prototypes
 CFLAGS   += -I./include $(CFLAGS_xeninclude)
-CFLAGS   += $(CFLAGS_libxentoollog)
+CFLAGS   += $(CFLAGS_libxentoollog) $(CFLAGS_libxentoolcore)
 
 SRCS-y                 += core.c
 SRCS-$(CONFIG_Linux)   += linux.c
@@ -62,7 +62,7 @@ libxenforeignmemory.so.$(MAJOR): libxenforeignmemory.so.$(MAJOR).$(MINOR)
 	$(SYMLINK_SHLIB) $< $@
 
 libxenforeignmemory.so.$(MAJOR).$(MINOR): $(PIC_OBJS) libxenforeignmemory.map
-	$(CC) $(LDFLAGS) $(PTHREAD_LDFLAGS) -Wl,$(SONAME_LDFLAG) -Wl,libxenforeignmemory.so.$(MAJOR) $(SHLIB_LDFLAGS) -o $@ $(PIC_OBJS) $(LDLIBS_libxentoollog) $(APPEND_LDFLAGS)
+	$(CC) $(LDFLAGS) $(PTHREAD_LDFLAGS) -Wl,$(SONAME_LDFLAG) -Wl,libxenforeignmemory.so.$(MAJOR) $(SHLIB_LDFLAGS) -o $@ $(PIC_OBJS) $(LDLIBS_libxentoollog) $(LDLIBS_libxentoolcore) $(APPEND_LDFLAGS)
 
 .PHONY: install
 install: build
diff --git a/tools/libs/foreignmemory/core.c b/tools/libs/foreignmemory/core.c
index a6897dc..b48ecba 100644
--- a/tools/libs/foreignmemory/core.c
+++ b/tools/libs/foreignmemory/core.c
@@ -19,6 +19,16 @@
 
 #include "private.h"
 
+static int all_restrict_cb(Xentoolcore__Active_Handle *ah, uint32_t domid) {
+    xenforeignmemory_handle *fmem = CONTAINER_OF(ah, *fmem, tc_ah);
+
+    if (fmem->fd < 0)
+        /* just in case */
+        return 0;
+
+    return xenforeignmemory_restrict(fmem, domid);
+}
+
 xenforeignmemory_handle *xenforeignmemory_open(xentoollog_logger *logger,
                                                unsigned open_flags)
 {
@@ -31,6 +41,9 @@ xenforeignmemory_handle *xenforeignmemory_open(xentoollog_logger *logger,
     fmem->logger = logger;
     fmem->logger_tofree = NULL;
 
+    fmem->tc_ah.restrict_callback = all_restrict_cb;
+    xentoolcore__register_active_handle(&fmem->tc_ah);
+
     if (!fmem->logger) {
         fmem->logger = fmem->logger_tofree =
             (xentoollog_logger*)
@@ -45,6 +58,7 @@ xenforeignmemory_handle *xenforeignmemory_open(xentoollog_logger *logger,
 
 err:
     osdep_xenforeignmemory_close(fmem);
+    xentoolcore__deregister_active_handle(&fmem->tc_ah);
     xtl_logger_destroy(fmem->logger_tofree);
     free(fmem);
     return NULL;
@@ -58,6 +72,7 @@ int xenforeignmemory_close(xenforeignmemory_handle *fmem)
         return 0;
 
     rc = osdep_xenforeignmemory_close(fmem);
+    xentoolcore__deregister_active_handle(&fmem->tc_ah);
     xtl_logger_destroy(fmem->logger_tofree);
     free(fmem);
     return rc;
diff --git a/tools/libs/foreignmemory/private.h b/tools/libs/foreignmemory/private.h
index c5c07cc..2470f3c 100644
--- a/tools/libs/foreignmemory/private.h
+++ b/tools/libs/foreignmemory/private.h
@@ -5,6 +5,8 @@
 
 #include <xenforeignmemory.h>
 
+#include <xentoolcore_internal.h>
+
 #include <xen/xen.h>
 #include <xen/sys/privcmd.h>
 
@@ -20,6 +22,7 @@ struct xenforeignmemory_handle {
     xentoollog_logger *logger, *logger_tofree;
     unsigned flags;
     int fd;
+    Xentoolcore__Active_Handle tc_ah;
 };
 
 int osdep_xenforeignmemory_open(xenforeignmemory_handle *fmem);
diff --git a/tools/libs/foreignmemory/xenforeignmemory.pc.in b/tools/libs/foreignmemory/xenforeignmemory.pc.in
index 63432dc..61c9def 100644
--- a/tools/libs/foreignmemory/xenforeignmemory.pc.in
+++ b/tools/libs/foreignmemory/xenforeignmemory.pc.in
@@ -7,4 +7,4 @@ Description: The Xenforeignmemory library for Xen hypervisor
 Version: @@version@@
 Cflags: -I${includedir} @@cflagslocal@@
 Libs: @@libsflag@@${libdir} -lxenforeignmemory
-Requires.private: xentoollog
+Requires.private: xentoollog,xentoolcore
-- 
2.1.4


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