Author: nwhitehorn
Date: Tue Dec 17 14:55:23 2013
New Revision: 259515
URL: http://svnweb.freebsd.org/changeset/base/259515
Log:
MF10 259465:
Add new sysctl, kern.supported_archs, containing the list of FreeBSD
MACHINE_ARCH values whose binaries this kernel can run. This patch provides
a feature requested for implementing pkgng ABI identifiers in a robust
way.
The list is designed to indicate whether, say, an i386 package can be run on
the current system. If kern.supported_abis contains "i386", then the answer
is yes. Otherwise, the answer is no.
At the moment, this only supports MACHINE_ARCH and MACHINE_ARCH32. As we
gain support for more interesting combinations, this needs to become more
flexible, possibily through the sysent framework, along with the
hw.machine_arch emulation immediately preceding this code in kern_mib.c.
Reviewed by: imp
Approved by: re (glebius)
Modified:
releng/10.0/sys/kern/kern_mib.c
Directory Properties:
releng/10.0/ (props changed)
Modified: releng/10.0/sys/kern/kern_mib.c
==============================================================================
--- releng/10.0/sys/kern/kern_mib.c Tue Dec 17 14:51:47 2013
(r259514)
+++ releng/10.0/sys/kern/kern_mib.c Tue Dec 17 14:55:23 2013
(r259515)
@@ -261,6 +261,13 @@ sysctl_hw_machine_arch(SYSCTL_HANDLER_AR
SYSCTL_PROC(_hw, HW_MACHINE_ARCH, machine_arch, CTLTYPE_STRING | CTLFLAG_RD,
NULL, 0, sysctl_hw_machine_arch, "A", "System architecture");
+SYSCTL_STRING(_kern, OID_AUTO, supported_archs, CTLFLAG_RD | CTLFLAG_MPSAFE,
+#ifdef COMPAT_FREEBSD32
+ MACHINE_ARCH " " MACHINE_ARCH32, 0, "Supported architectures for
binaries");
+#else
+ MACHINE_ARCH, 0, "Supported architectures for binaries");
+#endif
+
static int
sysctl_hostname(SYSCTL_HANDLER_ARGS)
{
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