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package/qemu: fix qemu 3.1.1.1 to build with glibc-2.29

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These patches are already in qemu upstream under:
- 184943d827ce09375284e6fbb9fd5eeb9e369529
- 71ba74f67eaca21b0cc9d96f534ad3b9a7161400

They rename gettid() to sys_gettid() to avoid clash with glibc

Signed-off-by: Paulo Matos <pmatos@igalia.com>
Tested-by: Carlos Santos <unixmania@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Paulo Matos 2019-10-25 12:42:57 +02:00 committed by Thomas Petazzoni
parent a3c3d71fd5
commit 9dcca3ae40
2 changed files with 135 additions and 0 deletions
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44
package/qemu/3.1.1.1/0004-linux-user-assume-__NR_gettid-always-exists.patch Normal file
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@ -0,0 +1,44 @@
From 184943d827ce09375284e6fbb9fd5eeb9e369529 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= <berrange@redhat.com>
Date: Wed, 20 Mar 2019 16:18:41 +0000
Subject: [PATCH] linux-user: assume __NR_gettid always exists
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
The gettid syscall was introduced in Linux 2.4.11. This is old enough
that we can assume it always exists and thus not bother with the
conditional backcompat logic.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20190320161842.13908-2-berrange@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
---
linux-user/syscall.c | 8 --------
1 file changed, 8 deletions(-)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 208fd1813d..11729f382c 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -249,15 +249,7 @@ static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \
#define TARGET_NR__llseek TARGET_NR_llseek
#endif
-#ifdef __NR_gettid
_syscall0(int, gettid)
-#else
-/* This is a replacement for the host gettid() and must return a host
- errno. */
-static int gettid(void) {
- return -ENOSYS;
-}
-#endif
/* For the 64-bit guest on 32-bit host case we must emulate
* getdents using getdents64, because otherwise the host
--
2.23.0

91
package/qemu/3.1.1.1/0005-linux-user-rename-gettid-to-sys_gettid-to-avoid-clas.patch Normal file
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@ -0,0 +1,91 @@
From 71ba74f67eaca21b0cc9d96f534ad3b9a7161400 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= <berrange@redhat.com>
Date: Wed, 20 Mar 2019 16:18:42 +0000
Subject: [PATCH] linux-user: rename gettid() to sys_gettid() to avoid clash
with glibc
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
The glibc-2.29.9000-6.fc31.x86_64 package finally includes the gettid()
function as part of unistd.h when __USE_GNU is defined. This clashes
with linux-user code which unconditionally defines this function name
itself.
/home/berrange/src/virt/qemu/linux-user/syscall.c:253:16: error: static declaration of ‘gettid’ follows non-static declaration
253 | _syscall0(int, gettid)
| ^~~~~~
/home/berrange/src/virt/qemu/linux-user/syscall.c:184:13: note: in definition of macro ‘_syscall0’
184 | static type name (void) \
| ^~~~
In file included from /usr/include/unistd.h:1170,
from /home/berrange/src/virt/qemu/include/qemu/osdep.h:107,
from /home/berrange/src/virt/qemu/linux-user/syscall.c:20:
/usr/include/bits/unistd_ext.h:34:16: note: previous declaration of ‘gettid’ was here
34 | extern __pid_t gettid (void) __THROW;
| ^~~~~~
CC aarch64-linux-user/linux-user/signal.o
make[1]: *** [/home/berrange/src/virt/qemu/rules.mak:69: linux-user/syscall.o] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:449: subdir-aarch64-linux-user] Error 2
While we could make our definition conditional and rely on glibc's impl,
this patch simply renames our definition to sys_gettid() which is a
common pattern in this file.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20190320161842.13908-3-berrange@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
---
linux-user/syscall.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 11729f382c..96cd4bf86d 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -249,7 +249,8 @@ static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \
#define TARGET_NR__llseek TARGET_NR_llseek
#endif
-_syscall0(int, gettid)
+#define __NR_sys_gettid __NR_gettid
+_syscall0(int, sys_gettid)
/* For the 64-bit guest on 32-bit host case we must emulate
* getdents using getdents64, because otherwise the host
@@ -5434,7 +5435,7 @@ static void *clone_func(void *arg)
cpu = ENV_GET_CPU(env);
thread_cpu = cpu;
ts = (TaskState *)cpu->opaque;
- info->tid = gettid();
+ info->tid = sys_gettid();
task_settid(ts);
if (info->child_tidptr)
put_user_u32(info->tid, info->child_tidptr);
@@ -5579,9 +5580,9 @@ static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp,
mapping. We can't repeat the spinlock hack used above because
the child process gets its own copy of the lock. */
if (flags & CLONE_CHILD_SETTID)
- put_user_u32(gettid(), child_tidptr);
+ put_user_u32(sys_gettid(), child_tidptr);
if (flags & CLONE_PARENT_SETTID)
- put_user_u32(gettid(), parent_tidptr);
+ put_user_u32(sys_gettid(), parent_tidptr);
ts = (TaskState *)cpu->opaque;
if (flags & CLONE_SETTLS)
cpu_set_tls (env, newtls);
@@ -10621,7 +10622,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1,
return TARGET_PAGE_SIZE;
#endif
case TARGET_NR_gettid:
- return get_errno(gettid());
+ return get_errno(sys_gettid());
#ifdef TARGET_NR_readahead
case TARGET_NR_readahead:
#if TARGET_ABI_BITS == 32
--
2.23.0