Re: [Qemu-devel] Still build failure for qemu-1.0

["Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>]

On Fri, 02 Dec 2011 14:22:03 +0100, erik.rull@rdsoftware.de wrote:
> Hi all,
> 
> there was the promise to test the build failure from rc4 with the released
> version and that it should work.
> 
> Its still present :-( please assist me here:
> 
>   CC    libhw64/9pfs/coxattr.o
>   CC    libhw64/9pfs/virtio-9p-handle.o
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c: In function
> 'handle_update_file_cred':
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:95: warning: implicit
> declaration of function 'openat'
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:95: warning: nested extern
> declaration of 'openat'
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:103: warning: implicit
> declaration of function 'fchownat'
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:103: warning: nested extern
> declaration of 'fchownat'
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c: In function 'handle_lstat':
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:120: warning: implicit
> declaration of function 'fstatat'
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:120: warning: nested extern
> declaration of 'fstatat'
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c: In function 'handle_readlink':
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:135: warning: implicit
> declaration of function 'readlinkat'
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:135: warning: nested extern
> declaration of 'readlinkat'
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c: In function 'handle_opendir':
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:167: warning: implicit
> declaration of function 'fdopendir'
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:167: warning: nested extern
> declaration of 'fdopendir'
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:167: warning: assignment
> makes pointer from integer without a cast
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c: In function 'handle_mknod':
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:265: warning: implicit
> declaration of function 'mknodat'
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:265: warning: nested extern
> declaration of 'mknodat'
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c: In function 'handle_mkdir':
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:283: warning: implicit
> declaration of function 'mkdirat'
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:283: warning: nested extern
> declaration of 'mkdirat'
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c: In function 'handle_symlink':
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:333: warning: implicit
> declaration of function 'symlinkat'
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:333: warning: nested extern
> declaration of 'symlinkat'
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c: In function 'handle_link':
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:363: warning: implicit
> declaration of function 'linkat'
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:363: warning: nested extern
> declaration of 'linkat'
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c: In function 'handle_renameat':
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:570: warning: implicit
> declaration of function 'renameat'
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:570: warning: nested extern
> declaration of 'renameat'
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c: In function 'handle_unlinkat':
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:593: warning: implicit
> declaration of function 'unlinkat'
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:593: warning: nested extern
> declaration of 'unlinkat'
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c: In function
> 'handle_ioc_getversion':
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:616: error:
> 'FS_IOC_GETVERSION' undeclared (first use in this function)
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:616: error: (Each undeclared
> identifier is reported only once
> /home/erik/qemu-1.0/hw/9pfs/virtio-9p-handle.c:616: error: for each
> function it appears in.)
> make[2]: *** [9pfs/virtio-9p-handle.o] Error 1
> make[1]: *** [subdir-libhw64] Error 2
> make[1]: Leaving directory `/home/erik/qemu-1.0'

Can you try the below patch ?

>From 08397638951fd3c131a6145c849f0a218aa52347 Mon Sep 17 00:00:00 2001
From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Date: Tue, 29 Nov 2011 15:10:52 +0530
Subject: [PATCH] hw/9pfs: Improve portability to older systems

handle fs driver require a set of newly added syscalls. Don't
Compile handle FS driver if those syscalls are not available.
Instead of adding #ifdef for all those syscalls we check for
open by handle syscall. If that is available then rest of the
syscalls used by the driver should be available.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
 Makefile.objs              |    4 ++--
 fsdev/qemu-fsdev.c         |    2 ++
 hw/9pfs/virtio-9p-handle.c |   33 ---------------------------------
 3 files changed, 4 insertions(+), 35 deletions(-)

diff --git a/Makefile.objs b/Makefile.objs
index d7a6539..3a699ee 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -310,8 +310,8 @@ hw-obj-$(CONFIG_SOUND) += $(sound-obj-y)
 9pfs-nested-$(CONFIG_VIRTFS) += virtio-9p-local.o virtio-9p-xattr.o
 9pfs-nested-$(CONFIG_VIRTFS) += virtio-9p-xattr-user.o virtio-9p-posix-acl.o
 9pfs-nested-$(CONFIG_VIRTFS) += virtio-9p-coth.o cofs.o codir.o cofile.o
-9pfs-nested-$(CONFIG_VIRTFS) += coxattr.o virtio-9p-handle.o
-9pfs-nested-$(CONFIG_VIRTFS) += virtio-9p-synth.o
+9pfs-nested-$(CONFIG_VIRTFS) += coxattr.o virtio-9p-synth.o
+9pfs-nested-$(CONFIG_OPEN_BY_HANDLE) +=  virtio-9p-handle.o
 
 hw-obj-$(CONFIG_REALLY_VIRTFS) += $(addprefix 9pfs/, $(9pfs-nested-y))
 $(addprefix 9pfs/, $(9pfs-nested-y)): QEMU_CFLAGS+=$(GLIB_CFLAGS)
diff --git a/fsdev/qemu-fsdev.c b/fsdev/qemu-fsdev.c
index 7fd2aa7..6684f7e 100644
--- a/fsdev/qemu-fsdev.c
+++ b/fsdev/qemu-fsdev.c
@@ -23,7 +23,9 @@ static QTAILQ_HEAD(FsDriverEntry_head, FsDriverListEntry) fsdriver_entries =
 
 static FsDriverTable FsDrivers[] = {
     { .name = "local", .ops = &local_ops},
+#ifdef CONFIG_OPEN_BY_HANDLE
     { .name = "handle", .ops = &handle_ops},
+#endif
     { .name = "synth", .ops = &synth_ops},
 };
 
diff --git a/hw/9pfs/virtio-9p-handle.c b/hw/9pfs/virtio-9p-handle.c
index 7644ae5..a62f690 100644
--- a/hw/9pfs/virtio-9p-handle.c
+++ b/hw/9pfs/virtio-9p-handle.c
@@ -45,7 +45,6 @@ struct handle_data {
     int handle_bytes;
 };
 
-#ifdef CONFIG_OPEN_BY_HANDLE
 static inline int name_to_handle(int dirfd, const char *name,
                                  struct file_handle *fh, int *mnt_id, int flags)
 {
@@ -56,38 +55,6 @@ static inline int open_by_handle(int mountfd, const char *fh, int flags)
 {
     return open_by_handle_at(mountfd, (struct file_handle *)fh, flags);
 }
-#else
-
-struct rpl_file_handle {
-    unsigned int handle_bytes;
-    int handle_type;
-    unsigned char handle[0];
-};
-#define file_handle rpl_file_handle
-
-#ifndef AT_REMOVEDIR
-#define AT_REMOVEDIR    0x200
-#endif
-#ifndef AT_EMPTY_PATH
-#define AT_EMPTY_PATH   0x1000  /* Allow empty relative pathname */
-#endif
-#ifndef O_PATH
-#define O_PATH    010000000
-#endif
-
-static inline int name_to_handle(int dirfd, const char *name,
-                                 struct file_handle *fh, int *mnt_id, int flags)
-{
-    errno = ENOSYS;
-    return -1;
-}
-
-static inline int open_by_handle(int mountfd, const char *fh, int flags)
-{
-    errno = ENOSYS;
-    return -1;
-}
-#endif
 
 static int handle_update_file_cred(int dirfd, const char *name, FsCred *credp)
 {
-- 
1.7.5.4