1999-08-28 01:08:13 +00:00
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# $FreeBSD$
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1995-06-25 17:32:43 +00:00
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2010-08-23 06:13:29 +00:00
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.if ${MACHINE_CPUARCH} == "amd64"
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2006-08-15 13:01:36 +00:00
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SFX= 32
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2010-03-11 14:49:06 +00:00
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CFLAGS+=-DCOMPAT_FREEBSD32 -DCOMPAT_LINUX32
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2006-08-15 13:01:36 +00:00
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.endif
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2010-08-23 06:13:29 +00:00
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.PATH: ${.CURDIR}/../../compat/linux ${.CURDIR}/../../${MACHINE_CPUARCH}/linux${SFX}
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2001-01-06 14:00:42 +00:00
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1998-10-16 04:30:52 +00:00
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KMOD= linux
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2011-02-12 18:17:12 +00:00
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SRCS= linux_fork.c linux${SFX}_dummy.c linux_emul.c linux_file.c \
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2013-09-18 18:48:33 +00:00
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linux_futex.c linux_getcwd.c linux_ioctl.c linux_ipc.c \
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MFP4 (with some minor changes):
Implement the linux_io_* syscalls (AIO). They are only enabled if the native
AIO code is available (either compiled in to the kernel or as a module) at
the time the functions are used. If the AIO stuff is not available there
will be a ENOSYS.
From the submitter:
---snip---
DESIGN NOTES:
1. Linux permits a process to own multiple AIO queues (distinguished by
"context"), but FreeBSD creates only one single AIO queue per process.
My code maintains a request queue (STAILQ of queue(3)) per "context",
and throws all AIO requests of all contexts owned by a process into
the single FreeBSD per-process AIO queue.
When the process calls io_destroy(2), io_getevents(2), io_submit(2) and
io_cancel(2), my code can pick out requests owned by the specified context
from the single FreeBSD per-process AIO queue according to the per-context
request queues maintained by my code.
2. The request queue maintained by my code stores contrast information between
Linux IO control blocks (struct linux_iocb) and FreeBSD IO control blocks
(struct aiocb). FreeBSD IO control block actually exists in userland memory
space, required by FreeBSD native aio_XXXXXX(2).
3. It is quite troubling that the function io_getevents() of libaio-0.3.105
needs to use Linux-specific "struct aio_ring", which is a partial mirror
of context in user space. I would rather take the address of context in
kernel as the context ID, but the io_getevents() of libaio forces me to
take the address of the "ring" in user space as the context ID.
To my surprise, one comment line in the file "io_getevents.c" of
libaio-0.3.105 reads:
Ben will hate me for this
REFERENCE:
1. Linux kernel source code: http://www.kernel.org/pub/linux/kernel/v2.6/
(include/linux/aio_abi.h, fs/aio.c)
2. Linux manual pages: http://www.kernel.org/pub/linux/docs/manpages/
(io_setup(2), io_destroy(2), io_getevents(2), io_submit(2), io_cancel(2))
3. Linux Scalability Effort: http://lse.sourceforge.net/io/aio.html
The design notes: http://lse.sourceforge.net/io/aionotes.txt
4. The package libaio, both source and binary:
http://rpmfind.net/linux/rpm2html/search.php?query=libaio
Simple transparent interface to Linux AIO system calls.
5. Libaio-oracle: http://oss.oracle.com/projects/libaio-oracle/
POSIX AIO implementation based on Linux AIO system calls (depending on
libaio).
---snip---
Submitted by: Li, Xiao <intron@intron.ac>
2006-10-15 14:22:14 +00:00
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linux${SFX}_machdep.c linux_mib.c linux_misc.c linux_signal.c \
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linux_socket.c linux_stats.c linux_sysctl.c linux${SFX}_sysent.c \
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linux${SFX}_sysvec.c linux_uid16.c linux_util.c linux_time.c \
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2014-09-18 08:36:45 +00:00
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linux_timer.c \
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2013-11-25 07:38:45 +00:00
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opt_inet6.h opt_compat.h opt_posix.h opt_usb.h vnode_if.h \
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device_if.h bus_if.h assym.s
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2007-05-23 08:33:06 +00:00
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# XXX: for assym.s
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2009-05-26 20:22:03 +00:00
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SRCS+= opt_kstack_pages.h opt_nfs.h opt_compat.h opt_hwpmc_hooks.h
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2010-08-23 06:13:29 +00:00
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.if ${MACHINE_CPUARCH} == "i386"
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2009-05-26 20:57:19 +00:00
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SRCS+= opt_apic.h
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.endif
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2007-05-23 08:33:06 +00:00
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OBJS= linux${SFX}_locore.o linux${SFX}_support.o
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1996-03-02 20:00:35 +00:00
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2010-08-23 06:13:29 +00:00
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.if ${MACHINE_CPUARCH} == "i386"
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2009-05-26 20:57:19 +00:00
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SRCS+= linux_ptrace.c imgact_linux.c opt_cpu.h
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2000-09-06 20:21:15 +00:00
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.endif
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2002-02-22 18:21:20 +00:00
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EXPORT_SYMS=
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EXPORT_SYMS+= linux_emul_path
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EXPORT_SYMS+= linux_get_osname
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EXPORT_SYMS+= linux_get_osrelease
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EXPORT_SYMS+= linux_ifname
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EXPORT_SYMS+= linux_ioctl_register_handler
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EXPORT_SYMS+= linux_ioctl_unregister_handler
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2006-08-15 13:01:36 +00:00
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CLEANFILES= linux${SFX}_assym.h linux${SFX}_genassym.o
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1996-03-02 20:00:35 +00:00
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2006-08-15 13:01:36 +00:00
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linux${SFX}_assym.h: linux${SFX}_genassym.o
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2000-06-03 07:40:19 +00:00
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.if exists(@)
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2006-08-15 13:01:36 +00:00
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linux${SFX}_assym.h: @/kern/genassym.sh
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2000-06-03 07:40:19 +00:00
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.endif
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2006-08-15 13:01:36 +00:00
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sh @/kern/genassym.sh linux${SFX}_genassym.o > ${.TARGET}
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1996-03-02 20:00:35 +00:00
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2006-08-15 13:01:36 +00:00
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linux${SFX}_locore.o: linux${SFX}_locore.s linux${SFX}_assym.h
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2000-01-09 10:04:53 +00:00
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${CC} -c -x assembler-with-cpp -DLOCORE ${CFLAGS} \
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2001-01-06 14:00:42 +00:00
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${.IMPSRC} -o ${.TARGET}
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1996-03-02 20:00:35 +00:00
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2007-05-23 15:45:52 +00:00
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linux${SFX}_support.o: linux${SFX}_support.s assym.s linux${SFX}_assym.h
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2007-05-23 08:33:06 +00:00
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${CC} -c -x assembler-with-cpp -DLOCORE ${CFLAGS} \
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${.IMPSRC} -o ${.TARGET}
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2013-06-17 21:30:46 +00:00
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linux${SFX}_genassym.o: linux${SFX}_genassym.c linux.h @ machine x86
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2002-01-10 03:52:54 +00:00
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${CC} -c ${CFLAGS:N-fno-common} ${.IMPSRC}
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1996-03-02 20:00:35 +00:00
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2005-10-14 23:30:17 +00:00
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.if !defined(KERNBUILDDIR)
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2009-05-07 10:01:05 +00:00
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.if defined(KTR)
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CFLAGS+= -DKTR
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.endif
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2005-10-14 23:30:17 +00:00
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.endif
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2003-02-03 17:43:20 +00:00
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2000-05-27 01:14:33 +00:00
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.include <bsd.kmod.mk>
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