linux-toradex.git/fs/hostfs/hostfs.h, branch v4.5

um: hostfs: Reduce number of syscalls in readdir

2015-04-13T19:01:07+00:00

Currently hostfs issues every time a seekdir(), in fact
it has to do this only upon the first call.
Also telldir() can be omitted as we can obtain the directory
offset from readdir().

Signed-off-by: Richard Weinberger

hostfs: No need to box and later unbox the file mode

2015-03-26T22:27:53+00:00

There is really no point in having a function with 10
arguments.

Reported-by: Daniel Walter 
Signed-off-by: Richard Weinberger

hostfs: support rename flags

2014-08-07T18:40:09+00:00

Support RENAME_NOREPLACE and RENAME_EXCHANGE flags on hostfs if the
underlying filesystem supports it.

Since renameat2(2) is not yet in any libc, use syscall(2) to invoke the
renameat2 syscall.

Signed-off-by: Miklos Szeredi 
Cc: Richard Weinberger 
Signed-off-by: Christoph Hellwig 
Signed-off-by: Al Viro

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

uml/hostfs: Propagate dirent.d_type to filldir()

2012-03-24T23:29:52+00:00

Currently the (optional) d_type member in struct dirent is always
DT_UNKNOWN on hostfs, which may confuse buggy software using readdir().
Make sure to propagate its value from the underlying filesystem if it's
available there.

Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Richard Weinberger

switch hostfs_iattr to explicit unsigned short

2012-01-04T03:55:15+00:00

It's shared between kernel-compiled hostfs_kern and userland-compiled
hostfs_user (it's uml stuff).  Use explicit type instead of playing
silly buggers with mode_t.  It's not a userland API per se; it interacts
between code compiled with types same as for host kernel and, directly
linked to it, code talking to libc.  Both sides come from the same
kernel source...

Signed-off-by: Al Viro

hostfs: fix UML crash: remove f_spare from hostfs

2010-10-26T23:52:04+00:00

365b1818 ("add f_flags to struct statfs(64)") resized f_spare within
struct statfs which caused a UML crash.  There is no need to copy f_spare.

Signed-off-by: Richard Weinberger 
Reported-by: Toralf Förster 
Tested-by: Toralf Förster 
Cc: Christoph Hellwig 
Cc: Al Viro 
Cc: Jeff Dike 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Update broken web addresses in the kernel.

2010-10-18T09:03:14+00:00

The patch below updates broken web addresses in the kernel

Signed-off-by: Justin P. Mattock 
Cc: Maciej W. Rozycki 
Cc: Geert Uytterhoeven 
Cc: Finn Thain 
Cc: Randy Dunlap 
Cc: Matt Turner 
Cc: Dimitry Torokhov 
Cc: Mike Frysinger 
Acked-by: Ben Pfaff 
Acked-by: Hans J. Koch 
Reviewed-by: Finn Thain 
Signed-off-by: Jiri Kosina

try to get rid of races in hostfs open()

2010-08-09T20:48:15+00:00

In case of mode mismatch, do *not* blindly close the descriptor
another openers might be using right now.  Open the underlying
file with currently sufficient mode, then
	* if current mode has grown so that it's sufficient for
us now, just close our new fd
	* if current mode has grown and our fd is *not* enough
to cover it, close and repeat.
	* otherwise, install our fd if the file hadn't been
opened at all or dup2() our fd over the current one (and close
our fd).
Critical section is protected by mutex; yes, system-wide.  All
we do under it is a bunch of comparison and maybe an overwriting
dup2() on host.

Signed-off-by: Al Viro

hostfs: get rid of file_type(), fold init_inode()

2010-08-09T20:48:10+00:00

Signed-off-by: Al Viro