[PATCH] Enable strace for TARGET_NR_llseek

[Taylor Simpson <tsimpson@quicinc.com>]

linux-user/syscall.c handles the case where TARGET_NR_llseek (one underscore)
is defined and TARGET_NR__llseek (two underscores)
    /* Newer kernel ports have llseek() instead of _llseek() */
    #if defined(TARGET_NR_llseek) && !defined(TARGET_NR__llseek)
    #define TARGET_NR__llseek TARGET_NR_llseek
    #endif

Unfortunately, strace will print "Unknown syscall" in this case.  This patch
fixes that problem.

Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
---
 linux-user/strace.c    | 2 +-
 linux-user/strace.list | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/linux-user/strace.c b/linux-user/strace.c
index 4f7130b..4bcc00b 100644
--- a/linux-user/strace.c
+++ b/linux-user/strace.c
@@ -1667,7 +1667,7 @@ print_linkat(const struct syscallname *name,
 }
 #endif
 
-#ifdef TARGET_NR__llseek
+#ifdef defined(TARGET_NR__llseek) || defined(TARGET_NR_llseek)
 static void
 print__llseek(const struct syscallname *name,
     abi_long arg0, abi_long arg1, abi_long arg2,
diff --git a/linux-user/strace.list b/linux-user/strace.list
index d49a1e9..5a01e95 100644
--- a/linux-user/strace.list
+++ b/linux-user/strace.list
@@ -503,6 +503,9 @@
 #ifdef TARGET_NR__llseek
 { TARGET_NR__llseek, "_llseek" , NULL, print__llseek, NULL },
 #endif
+#ifdef TARGET_NR_llseek
+{ TARGET_NR_llseek, "_llseek" , NULL, print__llseek, NULL },
+#endif
 #ifdef TARGET_NR_lock
 { TARGET_NR_lock, "lock" , NULL, NULL, NULL },
 #endif
-- 
2.7.4