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From e8f06676c6c88e12cd5f4f81a839b7111c683596 Mon Sep 17 00:00:00 2001
From: Richard Henderson <richard.henderson@linaro.org>
Date: Wed, 28 Feb 2024 10:25:16 -1000
Subject: [PATCH 3/5] linux-user: Add strace for shmat
Upstream-Status: Submitted [https://www.mail-archive.com/qemu-devel@nongnu.org/msg1026793.html]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.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 cf26e5526..47d6ec326 100644
--- a/linux-user/strace.c
+++ b/linux-user/strace.c
@@ -670,6 +670,25 @@ print_semctl(CPUArchState *cpu_env, const struct syscallname *name,
}
#endif
+static void
+print_shmat(CPUArchState *cpu_env, const struct syscallname *name,
+ abi_long arg0, abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4, abi_long arg5)
+{
+ static const struct flags shmat_flags[] = {
+ FLAG_GENERIC(SHM_RND),
+ FLAG_GENERIC(SHM_REMAP),
+ FLAG_GENERIC(SHM_RDONLY),
+ FLAG_GENERIC(SHM_EXEC),
+ };
+
+ print_syscall_prologue(name);
+ print_raw_param(TARGET_ABI_FMT_ld, arg0, 0);
+ print_pointer(arg1, 0);
+ print_flags(shmat_flags, arg2, 1);
+ print_syscall_epilogue(name);
+}
+
#ifdef TARGET_NR_ipc
static void
print_ipc(CPUArchState *cpu_env, const struct syscallname *name,
@@ -683,6 +702,10 @@ print_ipc(CPUArchState *cpu_env, const struct syscallname *name,
print_ipc_cmd(arg3);
qemu_log(",0x" TARGET_ABI_FMT_lx ")", arg4);
break;
+ case IPCOP_shmat:
+ print_shmat(cpu_env, &(const struct syscallname){ .name = "shmat" },
+ arg1, arg4, arg2, 0, 0, 0);
+ break;
default:
qemu_log(("%s("
TARGET_ABI_FMT_ld ","
diff --git a/linux-user/strace.list b/linux-user/strace.list
index 6655d4f26..dfd4237d1 100644
--- a/linux-user/strace.list
+++ b/linux-user/strace.list
@@ -1398,7 +1398,7 @@
{ TARGET_NR_sgetmask, "sgetmask" , NULL, NULL, NULL },
#endif
#ifdef TARGET_NR_shmat
-{ TARGET_NR_shmat, "shmat" , NULL, NULL, print_syscall_ret_addr },
+{ TARGET_NR_shmat, "shmat" , NULL, print_shmat, print_syscall_ret_addr },
#endif
#ifdef TARGET_NR_shmctl
{ TARGET_NR_shmctl, "shmctl" , NULL, NULL, NULL },
--
2.34.1
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