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Re: [Xen-devel] [PATCH] Rename public xenstore headers

> > [0] apart perhaps from having /usr/include/xen-compat/xs.h and
> > suggesting that people can use -I/usr/include/xen-compat as a bandaid,
> > but at that point they may as well just sed their code, since they may
> > need to support 4.1 anyhow.
> 
> I think this would be a useful thing to add.  Providing that would
> mean that with -I/usr/include/xen-compat, the same code could compile
> against both 4.1 and 4.2, if it said <xs.h>.

I'm a little concerned about breaking out of tree users (specifically
upstream Qemu). How about the following based on Bastian's patch.

This installs the headers as xenstore.h and xenstore_lib.h and provides
compat headers in /usr/include/xenstore-compat/xs{,_lib}.h which #warn
and then include the new names. This means that upstream code should be
buildable using -I/usr/include/xenstore-compat.

However, since we are now frozen for 4.2 I propose that we also create
symlinks from the old xs.h and xs_lib.h to the compat versions inorder
to not break 3rd party software for the 4.2 release. We will ship these
for the 4.2 release only. If distros wish to omit these from their
packaging then that's fine, although they should probably check their
reverse-build depends etc. We will remove these links early in 4.3.

qemu-xs-compat.patch fixes trad qemu, upstream is fixed when built in
our build system by this patch and is fixed when built independently by
the symlinks, for now. We can convert these properly at our leisure
before 4.3

(NB: git style patch, so the rename is represented in the minimised
manner)

8<------------------------------------

# HG changeset patch
# User Ian Campbell <ian.campbell@xxxxxxxxxx>
# Date 1336754841 -3600
# Node ID b61d5b46f3a91f7cc9064186e10acacfab10b184
# Parent  15ed8f45c4e57a1e206af020e0ff17b792108e99
xenstore: rename public xenstore headers


The xenstore header xs.h is producing conflicts with other software[1].

xs is a too short identifier and does not matche the library. Renaming
the headers to xenstore.h and xenstore_lib.h is the easiest way to make
them easy recognizable and prevent furthe problems.

[1]: http://bugs.debian.org/668550

Signed-off-by: Bastian Blank <waldi@xxxxxxxxxx>
Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>

diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -241,6 +241,8 @@ uninstall:
        rm -rf $(D)$(BINDIR)/xenpvnetboot $(D)$(BINDIR)/qemu-*-xen
        rm -rf $(D)$(INCLUDEDIR)/xenctrl* $(D)$(INCLUDEDIR)/xenguest.h
        rm -rf $(D)$(INCLUDEDIR)/xs_lib.h $(D)$(INCLUDEDIR)/xs.h
+       rm -rf $(D)$(INCLUDEDIR)/xenstore-compat/xs_lib.h 
$(D)$(INCLUDEDIR)/xensotre-compat/xs.h
+       rm -rf $(D)$(INCLUDEDIR)/xenstore_lib.h $(D)$(INCLUDEDIR)/xenstore.h
        rm -rf $(D)$(INCLUDEDIR)/xen
        rm -rf $(D)$(INCLUDEDIR)/_libxl* $(D)$(INCLUDEDIR)/libxl*
        rm -rf $(D)$(INCLUDEDIR)/xenstat.h $(D)$(INCLUDEDIR)/xentoollog.h
diff --git a/extras/mini-os/lib/sys.c b/extras/mini-os/lib/sys.c
--- a/extras/mini-os/lib/sys.c
+++ b/extras/mini-os/lib/sys.c
@@ -28,7 +28,7 @@
 #include <blkfront.h>
 #include <fbfront.h>
 #include <xenbus.h>
-#include <xs.h>
+#include <xenstore.h>
 
 #include <sys/types.h>
 #include <sys/unistd.h>
diff --git a/extras/mini-os/lib/xs.c b/extras/mini-os/lib/xs.c
--- a/extras/mini-os/lib/xs.c
+++ b/extras/mini-os/lib/xs.c
@@ -9,7 +9,7 @@
 #ifdef HAVE_LIBC
 #include <os.h>
 #include <lib.h>
-#include <xs.h>
+#include <xenstore.h>
 #include <xenbus.h>
 #include <stdlib.h>
 #include <unistd.h>
diff --git a/tools/Makefile b/tools/Makefile
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -150,7 +150,8 @@ subdir-all-qemu-xen-dir subdir-install-q
                --source-path=$$source \
                --extra-cflags="-I$(XEN_ROOT)/tools/include \
                -I$(XEN_ROOT)/tools/libxc \
-               -I$(XEN_ROOT)/tools/xenstore" \
+               -I$(XEN_ROOT)/tools/xenstore \
+               -I$(XEN_ROOT)/tools/xenstore/compat" \
                --extra-ldflags="-L$(XEN_ROOT)/tools/libxc \
                -L$(XEN_ROOT)/tools/xenstore" \
                --bindir=$(LIBEXEC) \
diff --git a/tools/blktap/drivers/blktapctrl.c 
b/tools/blktap/drivers/blktapctrl.c
--- a/tools/blktap/drivers/blktapctrl.c
+++ b/tools/blktap/drivers/blktapctrl.c
@@ -47,7 +47,7 @@
 #include <sys/ioctl.h>
 #include <string.h>
 #include <unistd.h>
-#include <xs.h>
+#include <xenstore.h>
 #include <sys/time.h>
 #include <syslog.h>
 #ifdef MEMSHR
diff --git a/tools/blktap/lib/blktaplib.h b/tools/blktap/lib/blktaplib.h
--- a/tools/blktap/lib/blktaplib.h
+++ b/tools/blktap/lib/blktaplib.h
@@ -38,7 +38,7 @@
 #include <xen/xen.h>
 #include <xen/io/blkif.h>
 #include <xen/io/ring.h>
-#include <xs.h>
+#include <xenstore.h>
 #include <sys/types.h>
 #include <unistd.h>
 
diff --git a/tools/blktap/lib/xenbus.c b/tools/blktap/lib/xenbus.c
--- a/tools/blktap/lib/xenbus.c
+++ b/tools/blktap/lib/xenbus.c
@@ -41,7 +41,7 @@
 #include <err.h>
 #include <stdarg.h>
 #include <errno.h>
-#include <xs.h>
+#include <xenstore.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
diff --git a/tools/blktap/lib/xs_api.c b/tools/blktap/lib/xs_api.c
--- a/tools/blktap/lib/xs_api.c
+++ b/tools/blktap/lib/xs_api.c
@@ -38,7 +38,7 @@
 #include <err.h>
 #include <stdarg.h>
 #include <errno.h>
-#include <xs.h>
+#include <xenstore.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
diff --git a/tools/console/client/main.c b/tools/console/client/main.c
--- a/tools/console/client/main.c
+++ b/tools/console/client/main.c
@@ -39,7 +39,7 @@
 #include <sys/stropts.h>
 #endif
 
-#include "xs.h"
+#include <xenstore.h>
 #include "xenctrl.h"
 
 #define ESCAPE_CHARACTER 0x1d
diff --git a/tools/console/daemon/io.c b/tools/console/daemon/io.c
--- a/tools/console/daemon/io.c
+++ b/tools/console/daemon/io.c
@@ -22,7 +22,7 @@
 
 #include "utils.h"
 #include "io.h"
-#include <xs.h>
+#include <xenstore.h>
 #include <xen/io/console.h>
 
 #include <stdlib.h>
diff --git a/tools/console/daemon/utils.h b/tools/console/daemon/utils.h
--- a/tools/console/daemon/utils.h
+++ b/tools/console/daemon/utils.h
@@ -26,7 +26,7 @@
 #include <stdio.h>
 #include <xenctrl.h>
 
-#include "xs.h"
+#include <xenstore.h>
 
 void daemonize(const char *pidfile);
 bool xen_setup(void);
diff --git a/tools/libvchan/init.c b/tools/libvchan/init.c
--- a/tools/libvchan/init.c
+++ b/tools/libvchan/init.c
@@ -40,7 +40,7 @@
 #include <unistd.h>
 #include <fcntl.h>
 
-#include <xs.h>
+#include <xenstore.h>
 #include <xen/sys/evtchn.h>
 #include <xen/sys/gntalloc.h>
 #include <xen/sys/gntdev.h>
diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -43,7 +43,7 @@
 #include <sys/types.h>
 #include <sys/wait.h>
 
-#include <xs.h>
+#include <xenstore.h>
 #include <xenctrl.h>
 
 #include "xentoollog.h"
diff --git a/tools/misc/xen-lowmemd.c b/tools/misc/xen-lowmemd.c
--- a/tools/misc/xen-lowmemd.c
+++ b/tools/misc/xen-lowmemd.c
@@ -5,7 +5,7 @@
 
 #include <stdio.h>
 #include <xenctrl.h>
-#include <xs.h>
+#include <xenstore.h>
 #include <stdlib.h>
 #include <string.h>
 
diff --git a/tools/python/xen/lowlevel/checkpoint/checkpoint.c 
b/tools/python/xen/lowlevel/checkpoint/checkpoint.c
--- a/tools/python/xen/lowlevel/checkpoint/checkpoint.c
+++ b/tools/python/xen/lowlevel/checkpoint/checkpoint.c
@@ -2,7 +2,7 @@
 
 #include <Python.h>
 
-#include <xs.h>
+#include <xenstore.h>
 #include <xenctrl.h>
 
 #include "checkpoint.h"
diff --git a/tools/python/xen/lowlevel/checkpoint/checkpoint.h 
b/tools/python/xen/lowlevel/checkpoint/checkpoint.h
--- a/tools/python/xen/lowlevel/checkpoint/checkpoint.h
+++ b/tools/python/xen/lowlevel/checkpoint/checkpoint.h
@@ -8,7 +8,7 @@
 #include <time.h>
 
 #include <xenguest.h>
-#include <xs.h>
+#include <xenstore.h>
 
 typedef enum {
     dt_unknown,
diff --git a/tools/python/xen/lowlevel/checkpoint/libcheckpoint.c 
b/tools/python/xen/lowlevel/checkpoint/libcheckpoint.c
--- a/tools/python/xen/lowlevel/checkpoint/libcheckpoint.c
+++ b/tools/python/xen/lowlevel/checkpoint/libcheckpoint.c
@@ -11,7 +11,7 @@
 
 #include <xenctrl.h>
 #include <xenguest.h>
-#include <xs.h>
+#include <xenstore.h>
 
 #include "checkpoint.h"
 
diff --git a/tools/python/xen/lowlevel/xs/xs.c 
b/tools/python/xen/lowlevel/xs/xs.c
--- a/tools/python/xen/lowlevel/xs/xs.c
+++ b/tools/python/xen/lowlevel/xs/xs.c
@@ -30,7 +30,7 @@
 #include <fcntl.h>
 #include <errno.h>
 
-#include "xs.h"
+#include <xenstore.h>
 
 /** @file
  * Python interface to the Xen Store Daemon (xs).
diff --git a/tools/tests/mce-test/tools/xen-mceinj.c 
b/tools/tests/mce-test/tools/xen-mceinj.c
--- a/tools/tests/mce-test/tools/xen-mceinj.c
+++ b/tools/tests/mce-test/tools/xen-mceinj.c
@@ -38,7 +38,7 @@
 #include <sys/time.h>
 #include <xen/arch-x86/xen-mca.h>
 #include <xg_save_restore.h>
-#include <xs.h>
+#include <xenstore.h>
 
 #define MCi_type_CTL        0x0
 #define MCi_type_STATUS     0x1
diff --git a/tools/xcutils/xc_save.c b/tools/xcutils/xc_save.c
--- a/tools/xcutils/xc_save.c
+++ b/tools/xcutils/xc_save.c
@@ -19,7 +19,7 @@
 #include <fcntl.h>
 #include <err.h>
 
-#include <xs.h>
+#include <xenstore.h>
 #include <xenctrl.h>
 #include <xenguest.h>
 
diff --git a/tools/xenbackendd/xenbackendd.c b/tools/xenbackendd/xenbackendd.c
--- a/tools/xenbackendd/xenbackendd.c
+++ b/tools/xenbackendd/xenbackendd.c
@@ -28,7 +28,7 @@
 #include <string.h>
 #include <syslog.h>
 
-#include <xs.h>
+#include <xenstore.h>
 
 #define DEVTYPE_UNKNOWN 0
 #define DEVTYPE_VIF 1
diff --git a/tools/xenpaging/xenpaging.c b/tools/xenpaging/xenpaging.c
--- a/tools/xenpaging/xenpaging.c
+++ b/tools/xenpaging/xenpaging.c
@@ -29,7 +29,7 @@
 #include <unistd.h>
 #include <poll.h>
 #include <xc_private.h>
-#include <xs.h>
+#include <xenstore.h>
 #include <getopt.h>
 
 #include "xc_bitops.h"
diff --git a/tools/xenpmd/xenpmd.c b/tools/xenpmd/xenpmd.c
--- a/tools/xenpmd/xenpmd.c
+++ b/tools/xenpmd/xenpmd.c
@@ -40,7 +40,7 @@
 #include <dirent.h>
 #include <unistd.h>
 #include <sys/stat.h>
-#include <xs.h>
+#include <xenstore.h>
 
 /* #define RUN_STANDALONE */
 #define RUN_IN_SIMULATE_MODE
diff --git a/tools/xenstat/libxenstat/src/xenstat_priv.h 
b/tools/xenstat/libxenstat/src/xenstat_priv.h
--- a/tools/xenstat/libxenstat/src/xenstat_priv.h
+++ b/tools/xenstat/libxenstat/src/xenstat_priv.h
@@ -24,7 +24,7 @@
 #define XENSTAT_PRIV_H
 
 #include <sys/types.h>
-#include <xs.h>
+#include <xenstore.h>
 #include "xenstat.h"
 
 #include "xenctrl.h"
diff --git a/tools/xenstore/COPYING b/tools/xenstore/COPYING
--- a/tools/xenstore/COPYING
+++ b/tools/xenstore/COPYING
@@ -1,6 +1,6 @@
 This license (LGPL) applies to the xenstore library which interfaces
-with the xenstore daemon (as stated in xs.c, xs.h, xs_lib.c and
-xs_lib.h).  The remaining files in the directory are licensed as
+with the xenstore daemon (as stated in xs.c, xenstore.h, xs_lib.c and
+xenstore_lib.h).  The remaining files in the directory are licensed as
 stated in the comments (as of this writing, GPL, see ../../COPYING).
 
 
diff --git a/tools/xenstore/Makefile b/tools/xenstore/Makefile
--- a/tools/xenstore/Makefile
+++ b/tools/xenstore/Makefile
@@ -109,6 +109,7 @@ install: all
        $(INSTALL_DIR) $(DESTDIR)$(BINDIR)
        $(INSTALL_DIR) $(DESTDIR)$(SBINDIR)
        $(INSTALL_DIR) $(DESTDIR)$(INCLUDEDIR)
+       $(INSTALL_DIR) $(DESTDIR)$(INCLUDEDIR)/xenstore-compat
        $(INSTALL_DIR) $(DESTDIR)/var/run/xenstored
        $(INSTALL_DIR) $(DESTDIR)/var/lib/xenstored
        $(INSTALL_PROG) xenstored $(DESTDIR)$(SBINDIR)
@@ -122,8 +123,12 @@ install: all
        ln -sf libxenstore.so.$(MAJOR).$(MINOR) 
$(DESTDIR)$(LIBDIR)/libxenstore.so.$(MAJOR)
        ln -sf libxenstore.so.$(MAJOR) $(DESTDIR)$(LIBDIR)/libxenstore.so
        $(INSTALL_DATA) libxenstore.a $(DESTDIR)$(LIBDIR)
-       $(INSTALL_DATA) xs.h $(DESTDIR)$(INCLUDEDIR)
-       $(INSTALL_DATA) xs_lib.h $(DESTDIR)$(INCLUDEDIR)
+       $(INSTALL_DATA) xenstore.h $(DESTDIR)$(INCLUDEDIR)
+       $(INSTALL_DATA) xenstore_lib.h $(DESTDIR)$(INCLUDEDIR)
+       $(INSTALL_DATA) compat/xs.h $(DESTDIR)$(INCLUDEDIR)/xenstore-compat/xs.h
+       $(INSTALL_DATA) compat/xs_lib.h 
$(DESTDIR)$(INCLUDEDIR)/xenstore-compat/xs_lib.h
+       ln -sf xenstore-compat/xs.h  $(DESTDIR)$(INCLUDEDIR)/xs.h
+       ln -sf xenstore-compat/xs_lib.h $(DESTDIR)$(INCLUDEDIR)/xs_lib.h
 
 -include $(DEPS)
 
diff --git a/tools/xenstore/compat/xs.h b/tools/xenstore/compat/xs.h
new file mode 100644
--- /dev/null
+++ b/tools/xenstore/compat/xs.h
@@ -0,0 +1,5 @@
+#ifndef XENSTORE_COMPAT_H
+#define XENSTORE_COMPAT_H
+#warning xs.h is deprecated use xenstore.h instead
+#include <xenstore.h>
+#endif
diff --git a/tools/xenstore/compat/xs_lib.h b/tools/xenstore/compat/xs_lib.h
new file mode 100644
--- /dev/null
+++ b/tools/xenstore/compat/xs_lib.h
@@ -0,0 +1,5 @@
+#ifndef XENSTORE_LIB_COMPAT_H
+#define XENSTORE_LIB_COMPAT_H
+#warning xs_lib.h is deprecated use xenstore_lib.h instead
+#include <xenstore_lib.h>
+#endif
diff --git a/tools/xenstore/init-xenstore-domain.c 
b/tools/xenstore/init-xenstore-domain.c
--- a/tools/xenstore/init-xenstore-domain.c
+++ b/tools/xenstore/init-xenstore-domain.c
@@ -7,7 +7,7 @@
 #include <sys/mman.h>
 #include <xenctrl.h>
 #include <xc_dom.h>
-#include <xs.h>
+#include <xenstore.h>
 #include <xen/sys/xenbus_dev.h>
 
 static uint32_t domid = -1;
diff --git a/tools/xenstore/xs.h b/tools/xenstore/xenstore.h
rename from tools/xenstore/xs.h
rename to tools/xenstore/xenstore.h
--- a/tools/xenstore/xs.h
+++ b/tools/xenstore/xenstore.h
@@ -17,10 +17,10 @@
     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
-#ifndef _XS_H
-#define _XS_H
+#ifndef XENSTORE_H
+#define XENSTORE_H
 
-#include <xs_lib.h>
+#include <xenstore_lib.h>
 
 #define XBT_NULL 0
 
@@ -223,7 +223,7 @@ char *xs_debug_command(struct xs_handle 
                       void *data, unsigned int len);
 
 int xs_suspend_evtchn_port(int domid);
-#endif /* _XS_H */
+#endif /* XENSTORE_H */
 
 /*
  * Local variables:
diff --git a/tools/xenstore/xenstore_client.c b/tools/xenstore/xenstore_client.c
--- a/tools/xenstore/xenstore_client.c
+++ b/tools/xenstore/xenstore_client.c
@@ -18,7 +18,7 @@
 #include <string.h>
 #include <termios.h>
 #include <unistd.h>
-#include <xs.h>
+#include <xenstore.h>
 
 #include <sys/ioctl.h>
 
diff --git a/tools/xenstore/xenstore_control.c 
b/tools/xenstore/xenstore_control.c
--- a/tools/xenstore/xenstore_control.c
+++ b/tools/xenstore/xenstore_control.c
@@ -2,7 +2,7 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "xs.h"
+#include "xenstore.h"
 
 
 int main(int argc, char **argv)
diff --git a/tools/xenstore/xs_lib.h b/tools/xenstore/xenstore_lib.h
rename from tools/xenstore/xs_lib.h
rename to tools/xenstore/xenstore_lib.h
--- a/tools/xenstore/xs_lib.h
+++ b/tools/xenstore/xenstore_lib.h
@@ -17,8 +17,8 @@
     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
-#ifndef _XS_LIB_H
-#define _XS_LIB_H
+#ifndef XENSTORE_LIB_H
+#define XENSTORE_LIB_H
 
 #include <stdbool.h>
 #include <limits.h>
@@ -82,4 +82,4 @@ char *sanitise_value(struct expanding_bu
 /* *out_len_r on entry is ignored; out must be at least strlen(in)+1 bytes. */
 void unsanitise_value(char *out, unsigned *out_len_r, const char *in);
 
-#endif /* _XS_LIB_H */
+#endif /* XENSTORE_LIB_H */
diff --git a/tools/xenstore/xenstored_core.c b/tools/xenstore/xenstored_core.c
--- a/tools/xenstore/xenstored_core.c
+++ b/tools/xenstore/xenstored_core.c
@@ -44,7 +44,7 @@
 #include "utils.h"
 #include "list.h"
 #include "talloc.h"
-#include "xs_lib.h"
+#include "xenstore_lib.h"
 #include "xenstored_core.h"
 #include "xenstored_watch.h"
 #include "xenstored_transaction.h"
diff --git a/tools/xenstore/xenstored_core.h b/tools/xenstore/xenstored_core.h
--- a/tools/xenstore/xenstored_core.h
+++ b/tools/xenstore/xenstored_core.h
@@ -27,7 +27,7 @@
 #include <stdbool.h>
 #include <stdint.h>
 #include <errno.h>
-#include "xs_lib.h"
+#include "xenstore_lib.h"
 #include "list.h"
 #include "tdb.h"
 
diff --git a/tools/xenstore/xenstored_transaction.c 
b/tools/xenstore/xenstored_transaction.c
--- a/tools/xenstore/xenstored_transaction.c
+++ b/tools/xenstore/xenstored_transaction.c
@@ -33,7 +33,7 @@
 #include "xenstored_transaction.h"
 #include "xenstored_watch.h"
 #include "xenstored_domain.h"
-#include "xs_lib.h"
+#include "xenstore_lib.h"
 #include "utils.h"
 
 struct changed_node
diff --git a/tools/xenstore/xenstored_watch.c b/tools/xenstore/xenstored_watch.c
--- a/tools/xenstore/xenstored_watch.c
+++ b/tools/xenstore/xenstored_watch.c
@@ -27,7 +27,7 @@
 #include "talloc.h"
 #include "list.h"
 #include "xenstored_watch.h"
-#include "xs_lib.h"
+#include "xenstore_lib.h"
 #include "utils.h"
 #include "xenstored_domain.h"
 
diff --git a/tools/xenstore/xs.c b/tools/xenstore/xs.c
--- a/tools/xenstore/xs.c
+++ b/tools/xenstore/xs.c
@@ -32,7 +32,7 @@
 #include <signal.h>
 #include <stdint.h>
 #include <errno.h>
-#include "xs.h"
+#include "xenstore.h"
 #include "list.h"
 #include "utils.h"
 
diff --git a/tools/xenstore/xs_lib.c b/tools/xenstore/xs_lib.c
--- a/tools/xenstore/xs_lib.c
+++ b/tools/xenstore/xs_lib.c
@@ -23,7 +23,7 @@
 #include <stdlib.h>
 #include <errno.h>
 #include <assert.h>
-#include "xs_lib.h"
+#include "xenstore_lib.h"
 
 /* Common routines for the Xen store daemon and client library. */
 
diff --git a/tools/xenstore/xs_tdb_dump.c b/tools/xenstore/xs_tdb_dump.c
--- a/tools/xenstore/xs_tdb_dump.c
+++ b/tools/xenstore/xs_tdb_dump.c
@@ -5,7 +5,7 @@
 #include <stdio.h>
 #include <stdarg.h>
 #include <string.h>
-#include "xs_lib.h"
+#include "xenstore_lib.h"
 #include "tdb.h"
 #include "talloc.h"
 #include "utils.h"

Attachment: qemu-xs-compat.patch
Description: Text Data

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