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| author | Ian Jackson <ian.jackson@eu.citrix.com> | 2011-01-27 14:59:04 +0000 |
|---|---|---|
| committer | Ian Jackson <ian.jackson@eu.citrix.com> | 2011-01-27 14:59:04 +0000 |
| commit | 3bbbb0c96c03814cb208f6bf9167c95a94f0bbcb (patch) | |
| tree | 021b69f9078e477e0fcf32586c8583f1baf06546 | |
| parent | 92585dd6a9557b7d4842260cdb2d2a4da0d5f854 (diff) | |
| download | xen-3bbbb0c96c03814cb208f6bf9167c95a94f0bbcb.tar.gz xen-3bbbb0c96c03814cb208f6bf9167c95a94f0bbcb.tar.bz2 xen-3bbbb0c96c03814cb208f6bf9167c95a94f0bbcb.zip | |
libxc: provide XENCTRL_HAS_XC_INTERFACE feature test macro
This makes it easier for out-of-tree callers to tell which version of
the libxc interface this version of xenctrl.h provides.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Acked-by: Ian Campbell <Ian.Campbell@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
| -rw-r--r-- | tools/libxc/xenctrl.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/tools/libxc/xenctrl.h b/tools/libxc/xenctrl.h index 00c6f4425e..971daf02bc 100644 --- a/tools/libxc/xenctrl.h +++ b/tools/libxc/xenctrl.h @@ -88,6 +88,16 @@ #endif +#define XENCTRL_HAS_XC_INTERFACE 1 +/* In Xen 4.0 and earlier, xc_interface_open and xc_evtchn_open would + * both return ints being the file descriptor. In 4.1 and later, they + * return an xc_interface* and xc_evtchn*, respectively - ie, a + * pointer to an opaque struct. This #define is provided in 4.1 and + * later, allowing out-of-tree callers to more easily distinguish + * between, and be compatible with, both versions. + */ + + /* * GENERAL * |