[PATCH v5 3/5] linux-user/strace: Add output for execveat() syscall

["Philippe Mathieu-Daudé" <philmd@linaro.org>]

From: Drew DeVault <sir@cmpwn.com>

Signed-off-by: Drew DeVault <sir@cmpwn.com>
Message-Id: <20221104081015.706009-1-sir@cmpwn.com>
Suggested-by: Helge Deller <deller@gmx.de>
[PMD: Split of bigger patch]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 linux-user/strace.c    | 23 +++++++++++++++++++++++
 linux-user/strace.list |  2 +-
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/linux-user/strace.c b/linux-user/strace.c
index 3d11d2f759..7bccb4f0c0 100644
--- a/linux-user/strace.c
+++ b/linux-user/strace.c
@@ -1104,6 +1104,16 @@ UNUSED static const struct flags clone_flags[] = {
     FLAG_END,
 };
 
+UNUSED static const struct flags execveat_flags[] = {
+#ifdef AT_EMPTY_PATH
+    FLAG_GENERIC(AT_EMPTY_PATH),
+#endif
+#ifdef AT_SYMLINK_NOFOLLOW
+    FLAG_GENERIC(AT_SYMLINK_NOFOLLOW),
+#endif
+    FLAG_END,
+};
+
 UNUSED static const struct flags msg_flags[] = {
     /* send */
     FLAG_GENERIC(MSG_CONFIRM),
@@ -1976,6 +1986,19 @@ print_execve(CPUArchState *cpu_env, const struct syscallname *name,
     print_syscall_epilogue(name);
 }
 
+static void
+print_execveat(CPUArchState *cpu_env, const struct syscallname *name,
+               abi_long arg1, abi_long arg2, abi_long arg3,
+               abi_long arg4, abi_long arg5, abi_long arg6)
+{
+    print_syscall_prologue(name);
+    print_at_dirfd(arg1, 0);
+    print_string(arg2, 0);
+    print_execve_argv(arg3, 0);
+    print_flags(execveat_flags, arg5, 1);
+    print_syscall_epilogue(name);
+}
+
 #if defined(TARGET_NR_faccessat) || defined(TARGET_NR_faccessat2)
 static void
 print_faccessat(CPUArchState *cpu_env, const struct syscallname *name,
diff --git a/linux-user/strace.list b/linux-user/strace.list
index 3a898e2532..bb21c05414 100644
--- a/linux-user/strace.list
+++ b/linux-user/strace.list
@@ -164,7 +164,7 @@
 { TARGET_NR_execve, "execve" , NULL, print_execve, NULL },
 #endif
 #ifdef TARGET_NR_execveat
-{ TARGET_NR_execveat, "execveat" , NULL, NULL, NULL },
+{ TARGET_NR_execveat, "execveat" , NULL, print_execveat, NULL },
 #endif
 #ifdef TARGET_NR_exec_with_loader
 { TARGET_NR_exec_with_loader, "exec_with_loader" , NULL, NULL, NULL },
-- 
2.38.1