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Groups > linux.kernel > #1467963

[PATCH v05 65/72] uapi fcntl.h: glibc fcntl.h header file compatibility fixes

From Mikko Rapeli <mikko.rapeli@iki.fi>
Newsgroups linux.kernel
Subject [PATCH v05 65/72] uapi fcntl.h: glibc fcntl.h header file compatibility fixes
Date 2016-08-22 21:10 +0200
Message-ID <s92LD-1R8-17@gated-at.bofh.it> (permalink)
References <s92iC-1rh-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Fixes these userspace compile warnings and error when glibc fcntl.h is
included before linux/fcntl.h:

asm-generic/fcntl.h:18:0: warning: "O_ACCMODE" redefined
asm-generic/fcntl.h:19:0: warning: "O_RDONLY" redefined
asm-generic/fcntl.h:20:0: warning: "O_WRONLY" redefined
asm-generic/fcntl.h:21:0: warning: "O_RDWR" redefined
asm-generic/fcntl.h:195:8: error: redefinition of ‘struct flock’
linux/fcntl.h:16:0: warning: "F_DUPFD_CLOEXEC" redefined

Signed-off-by: Mikko Rapeli <mikko.rapeli@iki.fi>
---
 include/uapi/asm-generic/fcntl.h |  6 ++++++
 include/uapi/linux/fcntl.h       |  3 +++
 include/uapi/linux/libc-compat.h | 20 ++++++++++++++++++++
 3 files changed, 29 insertions(+)

diff --git a/include/uapi/asm-generic/fcntl.h b/include/uapi/asm-generic/fcntl.h
index e063eff..3b429ce 100644
--- a/include/uapi/asm-generic/fcntl.h
+++ b/include/uapi/asm-generic/fcntl.h
@@ -1,6 +1,7 @@
 #ifndef _ASM_GENERIC_FCNTL_H
 #define _ASM_GENERIC_FCNTL_H
 
+#include <linux/libc-compat.h>
 #include <linux/types.h>
 
 /*
@@ -15,10 +16,13 @@
  * When introducing new O_* bits, please check its uniqueness in fcntl_init().
  */
 
+#if __UAPI_DEF_O_ACCMODE_RDONLY_WRONLY_RDWR
 #define O_ACCMODE	00000003
 #define O_RDONLY	00000000
 #define O_WRONLY	00000001
 #define O_RDWR		00000002
+#endif /* __UAPI_DEF_O_ACCMODE_RDONLY_WRONLY_RDWR */
+
 #ifndef O_CREAT
 #define O_CREAT		00000100	/* not fcntl */
 #endif
@@ -192,6 +196,7 @@ struct f_owner_ex {
 #define __ARCH_FLOCK_PAD
 #endif
 
+#if __UAPI_DEF_FLOCK
 struct flock {
 	short	l_type;
 	short	l_whence;
@@ -200,6 +205,7 @@ struct flock {
 	__kernel_pid_t	l_pid;
 	__ARCH_FLOCK_PAD
 };
+#endif /* __UAPI_DEF_FLOCK */
 #endif
 
 #ifndef HAVE_ARCH_STRUCT_FLOCK64
diff --git a/include/uapi/linux/fcntl.h b/include/uapi/linux/fcntl.h
index beed138..279bcfb 100644
--- a/include/uapi/linux/fcntl.h
+++ b/include/uapi/linux/fcntl.h
@@ -1,6 +1,7 @@
 #ifndef _UAPI_LINUX_FCNTL_H
 #define _UAPI_LINUX_FCNTL_H
 
+#include <linux/libc-compat.h>
 #include <asm/fcntl.h>
 
 #define F_SETLEASE	(F_LINUX_SPECIFIC_BASE + 0)
@@ -13,7 +14,9 @@
 #define F_CANCELLK	(F_LINUX_SPECIFIC_BASE + 5)
 
 /* Create a file descriptor with FD_CLOEXEC set. */
+#if __UAPI_DEF_F_DUPFD_CLOEXEC
 #define F_DUPFD_CLOEXEC	(F_LINUX_SPECIFIC_BASE + 6)
+#endif /* __UAPI_DEF_F_DUPFD_CLOEXEC */
 
 /*
  * Request nofications on a directory.
diff --git a/include/uapi/linux/libc-compat.h b/include/uapi/linux/libc-compat.h
index 44b8a6b..40190a4 100644
--- a/include/uapi/linux/libc-compat.h
+++ b/include/uapi/linux/libc-compat.h
@@ -51,6 +51,21 @@
 /* We have included glibc headers... */
 #if defined(__GLIBC__)
 
+/* Coordinate with glibc fcntl.h header. */
+#if defined(_FCNTL_H)
+
+#define __UAPI_DEF_FLOCK			0
+#define __UAPI_DEF_F_DUPFD_CLOEXEC		0
+#define __UAPI_DEF_O_ACCMODE_RDONLY_WRONLY_RDWR	0
+
+#else /* defined(_FCNTL_H) */
+
+#define __UAPI_DEF_FLOCK			1
+#define __UAPI_DEF_F_DUPFD_CLOEXEC		1
+#define __UAPI_DEF_O_ACCMODE_RDONLY_WRONLY_RDWR	1
+
+#endif /* defined(_FCNTL_H) */
+
 /* Coordinate with glibc net/if.h header. */
 #if defined(_NET_IF_H) && defined(__USE_MISC)
 
@@ -170,6 +185,11 @@
  * that we need. */
 #else /* !defined(__GLIBC__) */
 
+/* Definitions for asm-generic/fcntl.h */
+#define __UAPI_DEF_FLOCK			1
+#define __UAPI_DEF_F_DUPFD_CLOEXEC		1
+#define __UAPI_DEF_O_ACCMODE_RDONLY_WRONLY_RDWR	1
+
 /* Definitions for if.h */
 #define __UAPI_DEF_IF_IFCONF 1
 #define __UAPI_DEF_IF_IFMAP 1
-- 
2.8.1

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[PATCH v05 00/72] Userspace compile test and fixes for exported uapi header files Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 20:50 +0200
  [PATCH v05 31/72] include/uapi/linux/mroute.h: include linux/in.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 20:50 +0200
    Re: [PATCH v05 31/72] include/uapi/linux/mroute.h: include  linux/in.h David Miller <davem@davemloft.net> - 2016-08-23 01:40 +0200
  [PATCH v05 18/72] include/uapi/asm-generic/signal.h: use __kernel_size_t instead of size_t Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 20:50 +0200
  [PATCH v05 27/72] linux/if.h linux/hdlc/ioctl.h: move IFNAMSIZ definition to hdlc/ioctl.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 20:50 +0200
    Re: [PATCH v05 27/72] linux/if.h linux/hdlc/ioctl.h: move IFNAMSIZ  definition to hdlc/ioctl.h David Miller <davem@davemloft.net> - 2016-08-23 01:40 +0200
      Re: [PATCH v05 27/72] linux/if.h linux/hdlc/ioctl.h: move IFNAMSIZ  definition to hdlc/ioctl.h David Miller <davem@davemloft.net> - 2016-08-23 09:10 +0200
        Re: [PATCH v05 27/72] linux/if.h linux/hdlc/ioctl.h: move IFNAMSIZ  definition to hdlc/ioctl.h Frans Klaver <fransklaver@gmail.com> - 2016-08-23 10:10 +0200
          Re: [PATCH v05 27/72] linux/if.h linux/hdlc/ioctl.h: move IFNAMSIZ  definition to hdlc/ioctl.h Frans Klaver <fransklaver@gmail.com> - 2016-08-24 09:00 +0200
      Re: [PATCH v05 27/72] linux/if.h linux/hdlc/ioctl.h: move IFNAMSIZ  definition to hdlc/ioctl.h Frans Klaver <fransklaver@gmail.com> - 2016-08-23 09:20 +0200
  [PATCH v05 26/72] include/uapi/linux/if_pppox.h: include linux/in.h and linux/in6.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 20:50 +0200
    Re: [PATCH v05 26/72] include/uapi/linux/if_pppox.h: include  linux/in.h and linux/in6.h David Miller <davem@davemloft.net> - 2016-08-23 01:40 +0200
  [PATCH v05 17/72] asm-generic/sembuf.h: include asm/posix_types.h and asm/ipcbuf.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 20:50 +0200
  [PATCH v05 41/72] include/uapi/linux/atm_zatm.h: include linux/time.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 20:50 +0200
    Re: [PATCH v05 41/72] include/uapi/linux/atm_zatm.h: include  linux/time.h David Miller <davem@davemloft.net> - 2016-08-23 01:40 +0200
  [PATCH v05 37/72] include/uapi/linux/auto_fs.h: include linux/limits.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 20:50 +0200
    Re: [PATCH v05 37/72] include/uapi/linux/auto_fs.h: include  linux/limits.h Ian Kent <raven@themaw.net> - 2016-08-23 02:50 +0200
  [PATCH v05 30/72] include/uapi/linux/mqueue.h: include linux/types.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 20:50 +0200
  [PATCH v05 05/72] hsi_char.h: use __u32 from linux/types.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 20:50 +0200
    Re: [PATCH v05 05/72] hsi_char.h: use __u32 from linux/types.h Sebastian Reichel <sre@kernel.org> - 2016-08-22 23:00 +0200
  [PATCH v05 13/72] include/uapi/linux/sysctl.h: use __kernel_size_t instead of size_t Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 20:50 +0200
  [PATCH v05 39/72] include/uapi/linux/target_core_user.h: use __u8, __u16, __u32 and __u64 from linux/types.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 20:50 +0200
  [PATCH v05 32/72] include/uapi/linux/dlm_netlink.h: include linux/dlmconstants.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 20:50 +0200
  [PATCH v05 33/72] include/uapi/linux/ip6_tunnel.h: include linux/if.h and linux/in6.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 20:50 +0200
  [PATCH v05 28/72] include/uapi/linux/packet_diag.h: include linux/netdevice.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 20:50 +0200
  [PATCH v05 36/72] arch/x86/include/uapi/asm/signal.h: use __kernel_size_t instead of size_t Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 20:50 +0200
  [PATCH v05 38/72] include/uapi/linux/openvswitch.h: use __u32 from linux/types.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 20:50 +0200
    Re: [PATCH v05 38/72] include/uapi/linux/openvswitch.h: use __u32  from linux/types.h Stephen Hemminger <stephen@networkplumber.org> - 2016-08-22 21:40 +0200
      Re: [PATCH v05 38/72] include/uapi/linux/openvswitch.h: use __u32  from linux/types.h David Miller <davem@davemloft.net> - 2016-08-23 01:30 +0200
      Re: [PATCH v05 38/72] include/uapi/linux/openvswitch.h: use __u32  from linux/types.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-23 09:00 +0200
    Re: [PATCH v05 38/72] include/uapi/linux/openvswitch.h: use __u32  from linux/types.h David Miller <davem@davemloft.net> - 2016-08-23 01:40 +0200
  [PATCH v05 43/72] include/uapi/linux/btrfs.h: define NULL Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 20:50 +0200
  [PATCH v05 06/72] include/uapi/linux/hsi/cs-protocol.h: include linux/time.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 20:50 +0200
    Re: [PATCH v05 06/72] include/uapi/linux/hsi/cs-protocol.h: include  linux/time.h Sebastian Reichel <sre@kernel.org> - 2016-08-22 23:00 +0200
      Re: [PATCH v05 06/72] include/uapi/linux/hsi/cs-protocol.h: include  linux/time.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-23 09:00 +0200
  [PATCH v05 02/72] scripts/headers_compile_test.sh: compile test script for exported headers Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 20:50 +0200
  [PATCH v05 62/72] include/uapi/linux/openvswitch.h: use __u32 from linux/types.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:00 +0200
    Re: [PATCH v05 62/72] include/uapi/linux/openvswitch.h: use __u32  from linux/types.h David Miller <davem@davemloft.net> - 2016-08-23 01:40 +0200
  [PATCH v05 72/72] uapi route.h: glibc net/route.h compat fix Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:00 +0200
    Re: [PATCH v05 72/72] uapi route.h: glibc net/route.h compat fix David Miller <davem@davemloft.net> - 2016-08-23 01:40 +0200
      Re: [PATCH v05 66/72] uapi icmp.h: glibc netinet/ip_icmp.h header  file compatibility fixes Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-23 23:30 +0200
        Re: [PATCH v05 66/72] uapi icmp.h: glibc netinet/ip_icmp.h header  file compatibility fixes David Miller <davem@davemloft.net> - 2016-08-24 01:50 +0200
  [PATCH v05 66/72] uapi icmp.h: glibc netinet/ip_icmp.h header file compatibility fixes Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:00 +0200
    Re: [PATCH v05 66/72] uapi icmp.h: glibc netinet/ip_icmp.h header  file compatibility fixes David Miller <davem@davemloft.net> - 2016-08-23 01:40 +0200
    Re: [PATCH v05 66/72] uapi icmp.h: glibc netinet/ip_icmp.h header  file compatibility fixes David Miller <davem@davemloft.net> - 2016-08-24 01:50 +0200
  [PATCH v05 55/72] include/uapi/xen/gntdev.h: include xen/privcmd.h and define grant_ref_t Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:00 +0200
  [PATCH v05 21/72] include/uapi/linux/if_pppox.h: include linux/if.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:10 +0200
    Re: [PATCH v05 21/72] include/uapi/linux/if_pppox.h: include  linux/if.h Stephen Hemminger <stephen@networkplumber.org> - 2016-08-22 21:40 +0200
      Re: [PATCH v05 21/72] include/uapi/linux/if_pppox.h: include  linux/if.h David Miller <davem@davemloft.net> - 2016-08-23 01:30 +0200
      Re: [PATCH v05 21/72] include/uapi/linux/if_pppox.h: include  linux/if.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-23 08:50 +0200
    Re: [PATCH v05 21/72] include/uapi/linux/if_pppox.h: include  linux/if.h David Miller <davem@davemloft.net> - 2016-08-23 01:40 +0200
  [PATCH v05 57/72] coda_psdev.h: move upc_req definition from uapi to kernel side headers Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:10 +0200
  [PATCH v05 65/72] uapi fcntl.h: glibc fcntl.h header file compatibility fixes Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:10 +0200
  [PATCH v05 23/72] include/uapi/linux/ipv6_route.h: include linux/in6.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:20 +0200
    Re: [PATCH v05 23/72] include/uapi/linux/ipv6_route.h: include  linux/in6.h David Miller <davem@davemloft.net> - 2016-08-23 01:30 +0200
  [PATCH v05 19/72] include/uapi/linux/socket.h: include sys/socket.h in userspace Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:20 +0200
  [PATCH v05 60/72] arch/arm/include/uapi/asm/signal.h: use __kernel_size_t instead of size_t Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:20 +0200
    Re: [PATCH v05 60/72] arch/arm/include/uapi/asm/signal.h: use __kernel_size_t instead of size_t Arnd Bergmann <arnd@arndb.de> - 2016-08-24 17:10 +0200
  [PATCH v05 69/72] uapi rose.h: glibc netrose/rose.h header file compatibility fixes Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:20 +0200
  [PATCH v05 52/72] include/linux/sdb.h: use linux/types.h types instead of stdint.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:20 +0200
  [PATCH v05 54/72] include/uapi/xen/privcmd.h: fix compilation in userspace Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:20 +0200
    Re: [PATCH v05 54/72] include/uapi/xen/privcmd.h: fix compilation in  userspace Russell King - ARM Linux <linux@armlinux.org.uk> - 2016-08-23 12:10 +0200
      Re: [PATCH v05 54/72] include/uapi/xen/privcmd.h: fix compilation  in userspace Stefano Stabellini <sstabellini@kernel.org> - 2016-08-23 20:20 +0200
        Re: [PATCH v05 54/72] include/uapi/xen/privcmd.h: fix compilation in  userspace Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-23 22:40 +0200
          Re: [PATCH v05 54/72] include/uapi/xen/privcmd.h: fix compilation  in userspace Stefano Stabellini <sstabellini@kernel.org> - 2016-08-23 23:20 +0200
  [PATCH v05 24/72] include/uapi/linux/ipv6_route.h: include linux/in6.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:30 +0200
  [PATCH v05 56/72] include/uapi/xen/evtchn.h: include xen/privcmd.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:30 +0200
  [PATCH v05 63/72] include/uapi/sound/Kbuild: remove sound/asoc.h from userspace Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:30 +0200
  [PATCH v05 64/72] include/uapi/linux/ipx.h: fix conflicting defitions with glibc netipx/ipx.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:30 +0200
    Re: [PATCH v05 64/72] include/uapi/linux/ipx.h: fix conflicting  defitions with glibc netipx/ipx.h David Miller <davem@davemloft.net> - 2016-08-23 01:40 +0200
  [PATCH v05 20/72] include/uapi/linux/rds.h: include linux/socket.h and linux/types.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:30 +0200
  [PATCH v05 58/72] include/uapi/linux/elfcore.h: remove non-compiling userspace parts Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:30 +0200
  [PATCH v05 70/72] uapi time.h: glibc time.h header file compatibility fixes Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:30 +0200
  [PATCH v05 68/72] uapi ax25.h: glibc netax25/ax25.h header file compatibility fixes Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:30 +0200
    Re: [PATCH v05 68/72] uapi ax25.h: glibc netax25/ax25.h header  file compatibility fixes David Miller <davem@davemloft.net> - 2016-08-23 01:40 +0200
  [PATCH v05 50/72] include/uapi/linux/fuse.h: use linux/types.h also in userspace Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:30 +0200
    Re: [PATCH v05 50/72] include/uapi/linux/fuse.h: use linux/types.h  also in userspace Miklos Szeredi <miklos@szeredi.hu> - 2016-08-23 09:20 +0200
      Re: [PATCH v05 50/72] include/uapi/linux/fuse.h: use linux/types.h  also in userspace Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-23 09:50 +0200
  [PATCH v05 67/72] uapi uio.h: glibc sys/uio.h header file compatibility fixes Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:30 +0200
  [PATCH v05 59/72] include/uapi/linux/errqueue.h: include time.h in userspace Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:40 +0200
  [PATCH v05 53/72] include/linux/xz.h: use linux/types.h types instead of stdint.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:40 +0200
  [PATCH v05 61/72] include/uapi/rdma/rdma_user_rxe.h: include in.h and in6.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:40 +0200
    Re: [PATCH v05 61/72] include/uapi/rdma/rdma_user_rxe.h: include in.h  and in6.h Doug Ledford <dledford@redhat.com> - 2016-08-23 17:10 +0200
  [PATCH v05 71/72] uapi term*.h: glibc termios.h header file compatibility fixes Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:50 +0200
  [PATCH v05 22/72] include/uapi/linux/if_tunnel.h: include linux/if.h, linux/ip.h and linux/in6.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:50 +0200
    Re: [PATCH v05 22/72] include/uapi/linux/if_tunnel.h: include  linux/if.h, linux/ip.h and linux/in6.h David Miller <davem@davemloft.net> - 2016-08-23 01:30 +0200
  [PATCH v05 51/72] include/linux/ipmi-fru.h: use linux/types.h instead of stdint.h Mikko Rapeli <mikko.rapeli@iki.fi> - 2016-08-22 21:50 +0200

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