[PATCH 03/13] linux-user: Add faccessat2() syscall

[Helge Deller]

Add implementation and strace output for faccessat2().

Signed-off-by: Helge Deller <del...@gmx.de>
---
 linux-user/strace.c    |  2 +-
 linux-user/strace.list |  3 +++
 linux-user/syscall.c   | 12 ++++++++++++
 3 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/linux-user/strace.c b/linux-user/strace.c
index 27309f1106..e8c63aa4c2 100644
--- a/linux-user/strace.c
+++ b/linux-user/strace.c
@@ -1962,7 +1962,7 @@ print_execv(CPUArchState *cpu_env, const struct 
syscallname *name,
 }
 #endif

-#ifdef TARGET_NR_faccessat
+#if defined(TARGET_NR_faccessat) || defined(TARGET_NR_faccessat2)
 static void
 print_faccessat(CPUArchState *cpu_env, 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 a78cdf3cdf..6e88da7fad 100644
--- a/linux-user/strace.list
+++ b/linux-user/strace.list
@@ -177,6 +177,9 @@
 #ifdef TARGET_NR_faccessat
 { TARGET_NR_faccessat, "faccessat" , NULL, print_faccessat, NULL },
 #endif
+#ifdef TARGET_NR_faccessat2
+{ TARGET_NR_faccessat2, "faccessat2" , NULL, print_faccessat, NULL },
+#endif
 #ifdef TARGET_NR_fadvise64
 { TARGET_NR_fadvise64, "fadvise64" , NULL, NULL, NULL },
 #endif
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index f409121202..f51c4fbabd 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -399,6 +399,9 @@ _syscall3(int, ioprio_set, int, which, int, who, int, 
ioprio)
 #if defined(TARGET_NR_getrandom) && defined(__NR_getrandom)
 _syscall3(int, getrandom, void *, buf, size_t, buflen, unsigned int, flags)
 #endif
+#if defined(TARGET_NR_faccessat2) && defined(__NR_faccessat2)
+_syscall4(int, faccessat2, int, dirfd, char *, pathname, int, mode, int, flags)
+#endif

 #if defined(TARGET_NR_kcmp) && defined(__NR_kcmp)
 _syscall5(int, kcmp, pid_t, pid1, pid_t, pid2, int, type,
@@ -9098,6 +9101,15 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int 
num, abi_long arg1,
         unlock_user(p, arg2, 0);
         return ret;
 #endif
+#if defined(TARGET_NR_faccessat2) && defined(__NR_faccessat2)
+    case TARGET_NR_faccessat2:
+        if (!(p = lock_user_string(arg2))) {
+            return -TARGET_EFAULT;
+        }
+        ret = get_errno(faccessat2(arg1, p, arg3, arg4));
+        unlock_user(p, arg2, 0);
+        return ret;
+#endif
 #ifdef TARGET_NR_nice /* not on alpha */
     case TARGET_NR_nice:
         return get_errno(nice(arg1));
--
2.37.1