----- On Apr 13, 2016, at 9:57 AM, Richard W.M. Jones [email protected] wrote:
> On Wed, Apr 13, 2016 at 04:20:32PM +0300, Cyrill Gorcunov wrote: >> On Wed, Apr 13, 2016 at 01:57:51PM +0100, Richard W.M. Jones wrote: >> > Define a system call for reading the current umask value. >> > >> > Signed-off-by: Richard W.M. Jones <[email protected]> >> >> Btw don't we have to declare it in include/uapi/asm-generic/unistd.h as well? > > Yes, I think I do. I was following pwritev2 which wasn't added > to this file, but other recent system calls (mlock2, copy_file_range) > were added. > > TBH the documentation for this file is not very clear... asm-generic/unistd.h defines the system call for a few architectures. grep -r asm-generic/unistd.h arch/*/include/ arch/arc/include/uapi/asm/unistd.h:#include <asm-generic/unistd.h> arch/arc/include/uapi/asm/unistd.h:/* Generic syscall (fs/filesystems.c - lost in asm-generic/unistd.h */ arch/arm64/include/uapi/asm/unistd.h:#include <asm-generic/unistd.h> arch/c6x/include/uapi/asm/unistd.h:#include <asm-generic/unistd.h> arch/h8300/include/uapi/asm/unistd.h:#include <asm-generic/unistd.h> arch/hexagon/include/uapi/asm/unistd.h:#include <asm-generic/unistd.h> arch/metag/include/uapi/asm/unistd.h:#include <asm-generic/unistd.h> arch/nios2/include/uapi/asm/unistd.h:#include <asm-generic/unistd.h> arch/openrisc/include/uapi/asm/unistd.h:#include <asm-generic/unistd.h> arch/score/include/uapi/asm/unistd.h:#include <asm-generic/unistd.h> arch/tile/include/uapi/asm/unistd.h:#include <asm-generic/unistd.h> arch/unicore32/include/uapi/asm/unistd.h:#include <asm-generic/unistd.h> Wiring up the system call in this header means adding support for this system call on all those architectures. Thanks, Mathieu > > Rich. > > -- > Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones > Read my programming and virtualization blog: http://rwmj.wordpress.com > virt-df lists disk usage of guests without needing to install any > software inside the virtual machine. Supports Linux and Windows. > http://people.redhat.com/~rjones/virt-df/ -- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com
