From a9662f2efdf27e225c0bf3d85076569e13b3849a Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Tue, 31 May 2016 14:41:57 +0100 Subject: linux-user: Special-case ERESTARTSYS in target_strerror() Since TARGET_ERESTARTSYS and TARGET_ESIGRETURN are internal-to-QEMU error numbers, handle them specially in target_strerror(), to avoid confusing strace output like: 9521 rt_sigreturn(14,8,274886297808,8,0,268435456) = -1 errno=513 (Unknown error 513) Signed-off-by: Peter Maydell --- linux-user/syscall.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index bcee02dfe8..782d475f7c 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -619,6 +619,13 @@ static inline int is_error(abi_long ret) const char *target_strerror(int err) { + if (err == TARGET_ERESTARTSYS) { + return "To be restarted"; + } + if (err == TARGET_QEMU_ESIGRETURN) { + return "Successful exit from sigreturn"; + } + if ((err >= ERRNO_TABLE_SIZE) || (err < 0)) { return NULL; } -- cgit v1.2.3