From f03969b952bc2aaf9f4445b6da28aebb0a9abde5 Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Sun, 4 Dec 2011 22:35:27 +0530 Subject: [PATCH 03/25] 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 --- 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) { -- 1.7.7.5