um: Use POSIX ucontext_t instead of struct ucontext
commit 4d1a535b8e
upstream.
glibc 2.26 removed the 'struct ucontext' to "improve" POSIX compliance
and break programs, including User Mode Linux. Fix User Mode Linux
by using POSIX ucontext_t.
This fixes:
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;
arch/x86/um/stub_segv.c: In function 'stub_segv_handler':
arch/x86/um/stub_segv.c:16:13: error: dereferencing pointer to incomplete type 'struct ucontext'
&uc->uc_mcontext);
Cc: stable@vger.kernel.org
Signed-off-by: Krzysztof Mazur <krzysiek@podlesie.net>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
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@ -160,7 +160,7 @@ static void (*handlers[_NSIG])(int sig, struct siginfo *si, mcontext_t *mc) = {
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static void hard_handler(int sig, siginfo_t *si, void *p)
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{
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struct ucontext *uc = p;
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ucontext_t *uc = p;
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mcontext_t *mc = &uc->uc_mcontext;
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unsigned long pending = 1UL << sig;
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@ -11,7 +11,7 @@
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void __attribute__ ((__section__ (".__syscall_stub")))
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stub_segv_handler(int sig, siginfo_t *info, void *p)
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{
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struct ucontext *uc = p;
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ucontext_t *uc = p;
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GET_FAULTINFO_FROM_MC(*((struct faultinfo *) STUB_DATA),
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&uc->uc_mcontext);
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