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UBUNTU: SAUCE: (no-up) add compat_uts_machine= kernel command line override

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We wish to use the arm64 buildds to build armhf binaries in 32bit chroots.
To make this work we need uname to return armv7l machine type.  To achieve
this add a kernel command line override for the 32bit machine type.
Add compat_uts_machine=<type> to allow the LINUX32 personality to return
that type for uname.

Signed-off-by: Andy Whitcroft <apw@canonical.com>
This commit is contained in:
Andy Whitcroft
2015-11-27 17:38:30 +00:00
committed by Paolo Pisati
parent 2cfd6bb6ad
commit 77273faf14
1 changed files with 15 additions and 0 deletions
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kernel/sys.c
+15
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@@ -1262,6 +1262,21 @@ SYSCALL_DEFINE0(setsid)
DECLARE_RWSEM(uts_sem);
#ifdef COMPAT_UTS_MACHINE
static char compat_uts_machine[__OLD_UTS_LEN+1] = COMPAT_UTS_MACHINE;
static int __init parse_compat_uts_machine(char *arg)
{
strncpy(compat_uts_machine, arg, __OLD_UTS_LEN);
compat_uts_machine[__OLD_UTS_LEN] = 0;
return 0;
}
early_param("compat_uts_machine", parse_compat_uts_machine);
#undef COMPAT_UTS_MACHINE
#define COMPAT_UTS_MACHINE compat_uts_machine
#endif
#ifdef COMPAT_UTS_MACHINE
#define override_architecture(name) \
(personality(current->personality) == PER_LINUX32 && \