From: Christoph Hellwig <hch@lst.de>
To: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
Helge Deller <deller@gmx.de>,
Michael Ellerman <mpe@ellerman.id.au>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Christian Borntraeger <borntraeger@de.ibm.com>,
"David S. Miller" <davem@davemloft.net>,
x86@kernel.org, Arnd Bergmann <arnd@arndb.de>
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org,
linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-s390@vger.kernel.org, sparclinux@vger.kernel.org,
linux-arch@vger.kernel.org
Subject: [PATCH 5/5] compat: consolidate the compat_flock{,64} definition
Date: Mon, 12 Apr 2021 10:55:45 +0200 [thread overview]
Message-ID: <20210412085545.2595431-6-hch@lst.de> (raw)
In-Reply-To: <20210412085545.2595431-1-hch@lst.de>
Provide a single common definition for the compat_flock and
compat_flock64 structures using the same tricks as for the native
variants. An extra define is added for the packing required on x86.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
arch/arm64/include/asm/compat.h | 16 ----------------
arch/mips/include/asm/compat.h | 19 ++-----------------
arch/parisc/include/asm/compat.h | 16 ----------------
arch/powerpc/include/asm/compat.h | 16 ----------------
arch/s390/include/asm/compat.h | 16 ----------------
arch/sparc/include/asm/compat.h | 18 +-----------------
arch/x86/include/asm/compat.h | 20 +++-----------------
include/linux/compat.h | 31 +++++++++++++++++++++++++++++++
8 files changed, 37 insertions(+), 115 deletions(-)
diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h
index a5fe4558a6ecc0..6f0908606b2b51 100644
--- a/arch/arm64/include/asm/compat.h
+++ b/arch/arm64/include/asm/compat.h
@@ -66,22 +66,6 @@ struct compat_stat {
compat_ulong_t __unused4[2];
};
-struct compat_flock {
- short l_type;
- short l_whence;
- compat_off_t l_start;
- compat_off_t l_len;
- compat_pid_t l_pid;
-};
-
-struct compat_flock64 {
- short l_type;
- short l_whence;
- compat_loff_t l_start;
- compat_loff_t l_len;
- compat_pid_t l_pid;
-};
-
struct compat_statfs {
int f_type;
int f_bsize;
diff --git a/arch/mips/include/asm/compat.h b/arch/mips/include/asm/compat.h
index a13436e91c3938..7df384e445de06 100644
--- a/arch/mips/include/asm/compat.h
+++ b/arch/mips/include/asm/compat.h
@@ -50,23 +50,8 @@ struct compat_stat {
s32 st_pad4[14];
};
-struct compat_flock {
- short l_type;
- short l_whence;
- compat_off_t l_start;
- compat_off_t l_len;
- s32 l_sysid;
- compat_pid_t l_pid;
- s32 pad[4];
-};
-
-struct compat_flock64 {
- short l_type;
- short l_whence;
- compat_loff_t l_start;
- compat_loff_t l_len;
- compat_pid_t l_pid;
-};
+#define __ARCH_COMPAT_FLOCK_EXTRA_SYSID s32 l_sysid;
+#define __ARCH_COMPAT_FLOCK_PAD s32 pad[4];
struct compat_statfs {
int f_type;
diff --git a/arch/parisc/include/asm/compat.h b/arch/parisc/include/asm/compat.h
index 1a609d38f6678e..972bf8911d1126 100644
--- a/arch/parisc/include/asm/compat.h
+++ b/arch/parisc/include/asm/compat.h
@@ -54,22 +54,6 @@ struct compat_stat {
u32 st_spare4[3];
};
-struct compat_flock {
- short l_type;
- short l_whence;
- compat_off_t l_start;
- compat_off_t l_len;
- compat_pid_t l_pid;
-};
-
-struct compat_flock64 {
- short l_type;
- short l_whence;
- compat_loff_t l_start;
- compat_loff_t l_len;
- compat_pid_t l_pid;
-};
-
struct compat_statfs {
s32 f_type;
s32 f_bsize;
diff --git a/arch/powerpc/include/asm/compat.h b/arch/powerpc/include/asm/compat.h
index b0f2c3f7fe45a5..e9d433bd561725 100644
--- a/arch/powerpc/include/asm/compat.h
+++ b/arch/powerpc/include/asm/compat.h
@@ -48,22 +48,6 @@ struct compat_stat {
u32 __unused4[2];
};
-struct compat_flock {
- short l_type;
- short l_whence;
- compat_off_t l_start;
- compat_off_t l_len;
- compat_pid_t l_pid;
-};
-
-struct compat_flock64 {
- short l_type;
- short l_whence;
- compat_loff_t l_start;
- compat_loff_t l_len;
- compat_pid_t l_pid;
-};
-
struct compat_statfs {
int f_type;
int f_bsize;
diff --git a/arch/s390/include/asm/compat.h b/arch/s390/include/asm/compat.h
index e0896758779da4..5578607913b847 100644
--- a/arch/s390/include/asm/compat.h
+++ b/arch/s390/include/asm/compat.h
@@ -103,22 +103,6 @@ struct compat_stat {
u32 __unused5;
};
-struct compat_flock {
- short l_type;
- short l_whence;
- compat_off_t l_start;
- compat_off_t l_len;
- compat_pid_t l_pid;
-};
-
-struct compat_flock64 {
- short l_type;
- short l_whence;
- compat_loff_t l_start;
- compat_loff_t l_len;
- compat_pid_t l_pid;
-};
-
struct compat_statfs {
u32 f_type;
u32 f_bsize;
diff --git a/arch/sparc/include/asm/compat.h b/arch/sparc/include/asm/compat.h
index 4524997424043f..16fa333f28c274 100644
--- a/arch/sparc/include/asm/compat.h
+++ b/arch/sparc/include/asm/compat.h
@@ -76,23 +76,7 @@ struct compat_stat64 {
unsigned int __unused5;
};
-struct compat_flock {
- short l_type;
- short l_whence;
- compat_off_t l_start;
- compat_off_t l_len;
- compat_pid_t l_pid;
- short __unused;
-};
-
-struct compat_flock64 {
- short l_type;
- short l_whence;
- compat_loff_t l_start;
- compat_loff_t l_len;
- compat_pid_t l_pid;
- short __unused;
-};
+#define __ARCH_COMPAT_FLOCK_PAD short __unused;
struct compat_statfs {
int f_type;
diff --git a/arch/x86/include/asm/compat.h b/arch/x86/include/asm/compat.h
index b1691cf148be10..d8e01bf51e7a26 100644
--- a/arch/x86/include/asm/compat.h
+++ b/arch/x86/include/asm/compat.h
@@ -51,25 +51,11 @@ struct compat_stat {
u32 __unused5;
};
-struct compat_flock {
- short l_type;
- short l_whence;
- compat_off_t l_start;
- compat_off_t l_len;
- compat_pid_t l_pid;
-};
-
/*
- * IA32 uses 4 byte alignment for 64 bit quantities,
- * so we need to pack this structure.
+ * IA32 uses 4 byte alignment for 64 bit quantities, so we need to pack the
+ * compat flock64 structure.
*/
-struct compat_flock64 {
- short l_type;
- short l_whence;
- compat_loff_t l_start;
- compat_loff_t l_len;
- compat_pid_t l_pid;
-} __attribute__((packed));
+#define __ARCH_NEED_COMPAT_FLOCK64_PACKED
struct compat_statfs {
int f_type;
diff --git a/include/linux/compat.h b/include/linux/compat.h
index 6e65be75360321..9d196f8a94d5ea 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -258,6 +258,37 @@ struct compat_rlimit {
compat_ulong_t rlim_max;
};
+#ifdef __ARCH_NEED_COMPAT_FLOCK64_PACKED
+#define __ARCH_COMPAT_FLOCK64_PACK __attribute__((packed))
+#else
+#define __ARCH_COMPAT_FLOCK64_PACK
+#endif
+
+struct compat_flock {
+ short l_type;
+ short l_whence;
+ compat_off_t l_start;
+ compat_off_t l_len;
+#ifdef __ARCH_COMPAT_FLOCK_EXTRA_SYSID
+ __ARCH_COMPAT_FLOCK_EXTRA_SYSID
+#endif
+ compat_pid_t l_pid;
+#ifdef __ARCH_COMPAT_FLOCK_PAD
+ __ARCH_COMPAT_FLOCK_PAD
+#endif
+};
+
+struct compat_flock64 {
+ short l_type;
+ short l_whence;
+ compat_loff_t l_start;
+ compat_loff_t l_len;
+ compat_pid_t l_pid;
+#ifdef __ARCH_COMPAT_FLOCK64_PAD
+ __ARCH_COMPAT_FLOCK64_PAD
+#endif
+} __ARCH_COMPAT_FLOCK64_PACK;
+
struct compat_rusage {
struct old_timeval32 ru_utime;
struct old_timeval32 ru_stime;
--
2.30.1
next prev parent reply other threads:[~2021-04-12 9:18 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-12 8:55 consolidate the flock uapi definitions Christoph Hellwig
2021-04-12 8:55 ` [PATCH 1/5] uapi: remove the unused HAVE_ARCH_STRUCT_FLOCK64 define Christoph Hellwig
2021-04-12 9:55 ` Arnd Bergmann
2021-04-14 6:45 ` Stephen Rothwell
2021-04-12 8:55 ` [PATCH 2/5] uapi: simplify __ARCH_FLOCK{,64}_PAD a little Christoph Hellwig
2021-04-12 8:55 ` [PATCH 3/5] uapi: merge the 32-bit mips struct flock into the generic one Christoph Hellwig
2021-04-12 8:55 ` [PATCH 4/5] uapi: always define F_GETLK64/F_SETLK64/F_SETLKW64 in fcntl.h Christoph Hellwig
2021-04-13 15:43 ` Helge Deller
2021-04-13 15:46 ` Christoph Hellwig
2021-04-13 15:58 ` Helge Deller
2021-04-12 8:55 ` Christoph Hellwig [this message]
2021-04-12 9:37 ` [PATCH 5/5] compat: consolidate the compat_flock{,64} definition David Laight
2021-04-12 10:53 ` David Laight
2021-04-12 11:26 ` Arnd Bergmann
2021-04-12 13:11 ` David Laight
2021-04-12 10:03 ` consolidate the flock uapi definitions Arnd Bergmann
2021-04-12 10:22 ` David Laight
2021-04-12 11:07 ` Arnd Bergmann
2021-04-15 12:20 ` Heiko Carstens
2022-01-11 8:35 consolidate the compat fcntl definitions Christoph Hellwig
2022-01-11 8:35 ` [PATCH 5/5] compat: consolidate the compat_flock{,64} definition Christoph Hellwig
2022-01-11 9:52 ` David Laight
2022-01-31 6:49 consolidate the compat fcntl definitions v2 Christoph Hellwig
2022-01-31 6:49 ` [PATCH 5/5] compat: consolidate the compat_flock{,64} definition Christoph Hellwig
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