Not sure when it got broken, but without this patch the command
make ARCH=um defconfig
make ARCH=um
fails due to struct ucontext being undefined.
arch/um/os-Linux/signal.c: In function ‘hard_handler’:
arch/um/os-Linux/signal.c:163:22: error: dereferencing pointer to incomplete
type ‘struct ucontext’
mcontext_t *mc = &uc->uc_mcontext;
<there are two errors like the above>
The fix seems fairly simple, that the code just needs to use
ucontext_t define instead.
I didn't verify that user-mode-linux is working after this change,
just that it builds successfully.
Cc: Jeff Dike <jd...@addtoit.com>
Cc: Richard Weinberger <rich...@nod.at>
Cc: user-mode-linux-devel@lists.sourceforge.net
Signed-off-by: Jesse Brandeburg <jesse.brandeb...@intel.com>
---
arch/um/os-Linux/signal.c | 2 +-
arch/x86/um/stub_segv.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c
index a86d7cc2c2d8..a5c0c909c48b 100644
--- a/arch/um/os-Linux/signal.c
+++ b/arch/um/os-Linux/signal.c
@@ -159,7 +159,7 @@ static void (*handlers[_NSIG])(int sig, struct siginfo *si,
mcontext_t *mc) = {
static void hard_handler(int sig, siginfo_t *si, void *p)
{
- struct ucontext *uc = p;
+ ucontext_t *uc = p;
mcontext_t *mc = &uc->uc_mcontext;
unsigned long pending = 1UL << sig;
diff --git a/arch/x86/um/stub_segv.c b/arch/x86/um/stub_segv.c
index 1518d2805ae8..fd6825537b97 100644
--- a/arch/x86/um/stub_segv.c
+++ b/arch/x86/um/stub_segv.c
@@ -10,7 +10,7 @@
void __attribute__ ((__section__ (".__syscall_stub")))
stub_segv_handler(int sig, siginfo_t *info, void *p)
{
- struct ucontext *uc = p;
+ ucontext_t *uc = p;
GET_FAULTINFO_FROM_MC(*((struct faultinfo *) STUB_DATA),
&uc->uc_mcontext);
--
2.14.3
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