linux-stable.git/arch/um/os-Linux/file.c, branch linux-4.2.y

um: Include sys/types.h for makedev(), major(), minor()

2015-06-25T20:42:21+00:00

The functions in question are not part of the POSIX standard,
documentation however hints that the corresponding header shall
be sys/types.h. C libraries other than glibc, namely musl, did
not include that header via other ways and complained.

Signed-off-by: Hans-Werner Hilse 
Signed-off-by: Richard Weinberger

um: Memory corruption on startup

2014-04-20T21:57:21+00:00

The reverse case of this race (you must msync before read) is
well known. This is the not so common one.

It can be triggered only on systems which do a lot of task
switching and only at UML startup. If you are starting 200+ UMLs
~ 0.5% will always die without this fix.

Signed-off-by: Anton Ivanov 
[rw: minor whitespace fixes]
Signed-off-by: Richard Weinberger

um: ubd: Add REQ_FLUSH suppport

2013-09-07T08:56:49+00:00

UML's block device driver does not support write barriers,
to support this this patch adds REQ_FLUSH suppport.
Every time the block layer sends a REQ_FLUSH we fsync() now
our backing file to guarantee data consistency.

Reported-and-tested-by: Richard W.M. Jones 
Signed-off-by: Richard Weinberger

um: get rid of pointless include "..." where include <...> will do

2012-10-09T20:28:45+00:00

Signed-off-by: Al Viro 
Signed-off-by: Richard Weinberger

um: -include user.h for USER_OBJ, trim includes

2011-11-02T13:14:44+00:00

Signed-off-by: Al Viro 
Signed-off-by: Richard Weinberger

Deal with missing exports for hostfs

2010-08-09T20:47:25+00:00

Signed-off-by: Al Viro

uml: implement O_APPEND

2008-02-05T17:44:30+00:00

The .a flags in openflags never had an implementation.

Signed-off-by: Jeff Dike 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

uml: style fixes in file.c

2008-02-05T17:44:29+00:00

arch/um/os-Linux/file.c needed some style work -
	updated the copyright
	cleaned up the includes
	CodingStyle fixes
	added some missing CATCH_EINTRs
	os_set_owner was unused, so it is gone
	all printks now have severities
	fcntl(F_GETFL) was being called without checking the return
	removed an obsolete comment

Signed-off-by: Jeff Dike 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

uml: miscellaneous code cleanups

2008-02-05T17:44:29+00:00

Code tidying -
	the pid field of struct irq_fd isn't used, so it is removed
     	os_set_fd_async needed to read flags before changing them, it
doesn't need a pid passed in because it can call getpid itself, and a
block of unused code needed deleting
	os_get_exec_close was unused, so it is removed
	ptrace_child called _exit for historical reasons which are no
longer valid, so just calls exit instead

Signed-off-by: Jeff Dike 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

uml: tidy kern_util.h

2008-02-05T17:44:26+00:00

Tidy kern_util.h.  It turns out that most of the function declarations
aren't used, so they can go away.  os.h no longer includes
kern_util.h, so files which got it through os.h now need to include it
directly.  A number of other files never needed it, so these includes
are deleted.

The structure which was used to pass signal handlers from the kernel
side to the userspace side is gone.  Instead, the handlers are
declared here, and used directly from libc code.  This allows
arch/um/os-Linux/trap.c to be deleted, with its remnants being moved
to arch/um/os-Linux/skas/trap.c.

arch/um/os-Linux/tty.c had its inclusions changed, and it needed some
style attention, so it got tidied.

Signed-off-by: Jeff Dike 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds