[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCHv2] 1/3] libxc: prefer using privcmd character device
Prefer using the character device over the proc file if the character device exists. This follows similar conversions of xenbus to avoid issues with FMODE_ATOMIC_POS added in Linux 3.14 and newer. CC: Ian Jackson <ian.jackson@xxxxxxxxxxxxx> CC: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> CC: Ian Campbell <ian.campbell@xxxxxxxxxx> CC: Wei Liu <wei.liu2@xxxxxxxxxx> Signed-off-by: Doug Goldstein <cardoe@xxxxxxxxxx> --- tools/libxc/xc_linux_osdep.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/tools/libxc/xc_linux_osdep.c b/tools/libxc/xc_linux_osdep.c index 76c55ff..c078b3d 100644 --- a/tools/libxc/xc_linux_osdep.c +++ b/tools/libxc/xc_linux_osdep.c @@ -46,7 +46,14 @@ static xc_osdep_handle linux_privcmd_open(xc_interface *xch) { int flags, saved_errno; - int fd = open("/proc/xen/privcmd", O_RDWR); + int fd = open("/dev/xen/privcmd", O_RDWR); /* prefer this newer interface */ + + if ( fd == -1 && ( errno == ENOENT || errno == ENXIO || + errno == ENODEV || errno == EACCES )) + { + /* Fallback to /proc/xen/privcmd */ + fd = open("/proc/xen/privcmd", O_RDWR); + } if ( fd == -1 ) { -- 2.4.10 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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