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[Qemu-devel] [PATCH v3 04/10] linux-user: Fix msgrcv() and msgsnd() sysc
From: |
Aleksandar Markovic |
Subject: |
[Qemu-devel] [PATCH v3 04/10] linux-user: Fix msgrcv() and msgsnd() syscalls emulation |
Date: |
Mon, 12 Sep 2016 21:35:52 +0200 |
From: Aleksandar Markovic <address@hidden>
If syscalls msgrcv() and msgsnd() fail, they return E2BIG, EACCES,
EAGAIN, EFAULT, EIDRM, EINTR, EINVAL, ENOMEM, or ENOMSG.
By examining negative scenarios of these syscalls for Mips, it was
established that ENOMSG does not have the same value accross all
platforms, but it is nevertheless not included for conversion in
the correspondant conversion table defined in linux-user/syscall.c.
This is certainly a bug, since it leads to the incorrect emulation
of msgrcv() and msgsnd() for scenarios involving ENOMSG.
This patch fixes this by extending the conversion table to include
ENOMSG.
Also, LTP test msgrcv04 will be fixed for some platforms.
Signed-off-by: Aleksandar Markovic <address@hidden>
---
linux-user/syscall.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index b118bd9..22a11f9 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -750,6 +750,9 @@ static uint16_t
host_to_target_errno_table[ERRNO_TABLE_SIZE] = {
#ifdef ENOTRECOVERABLE
[ENOTRECOVERABLE] = TARGET_ENOTRECOVERABLE,
#endif
+#ifdef ENOMSG
+ [ENOMSG] = TARGET_ENOMSG,
+#endif
};
static inline int host_to_target_errno(int err)
--
2.9.3
- [Qemu-devel] [PATCH v3 00/10] linux user: Fix assorted Qemu user mode issues, Aleksandar Markovic, 2016/09/12
- [Qemu-devel] [PATCH v3 05/10] linux-user: Fix socketcall() syscall emulation, Aleksandar Markovic, 2016/09/12
- [Qemu-devel] [PATCH v3 06/10] linux-user: Fix syslog() syscall emulation, Aleksandar Markovic, 2016/09/12
- [Qemu-devel] [PATCH v3 01/10] linux-user: Add support for adjtimex() syscall, Aleksandar Markovic, 2016/09/12
- [Qemu-devel] [PATCH v3 02/10] linux-user: Add support for sysfs() syscall, Aleksandar Markovic, 2016/09/12
- [Qemu-devel] [PATCH v3 07/10] linux-user: Remove tabs and trailing spaces from linux-user/main.c, Aleksandar Markovic, 2016/09/12
- [Qemu-devel] [PATCH v3 03/10] linux-user: Add support for ustat() syscall, Aleksandar Markovic, 2016/09/12
- [Qemu-devel] [PATCH v3 04/10] linux-user: Fix msgrcv() and msgsnd() syscalls emulation,
Aleksandar Markovic <=
- [Qemu-devel] [PATCH v3 08/10] linux-user: Improve braces-related formatting in linux-user/main.c, Aleksandar Markovic, 2016/09/12
- [Qemu-devel] [PATCH v3 09/10] linux-user: Improve usage of spaces in linux-user/main.c, Aleksandar Markovic, 2016/09/12
- [Qemu-devel] [PATCH v3 10/10] linux-user: Remove a duplicate item from strace.list, Aleksandar Markovic, 2016/09/12