linux.git/scripts/checksyscalls.sh, branch v6.18.21

checksyscalls: ignore fstat to silence build warning on LoongArch

2023-03-24T00:18:32+00:00

fstat is replaced by statx on the new architecture, so an exception is
added to the checksyscalls script to silence the following build warning
on LoongArch:

  CALL    scripts/checksyscalls.sh
:569:2: warning: #warning syscall fstat not implemented [-Wcpp]

Link: https://lkml.kernel.org/r/1678175940-20872-1-git-send-email-yangtiezhu@loongson.cn
Signed-off-by: Tiezhu Yang 
Suggested-by: WANG Xuerui 
Suggested-by: Arnd Bergmann 
Reviewed-by: Arnd Bergmann 
Cc: Huacai Chen 
Cc: Masahiro Yamada 
Signed-off-by: Andrew Morton

checksyscalls: ignore -Wunused-macros

2022-05-07T18:16:59+00:00

The macros defined in this file are for testing only and are purposely
not used. When compiled with W=2, both gcc and clang yield some
-Wunused-macros warnings. Ignore them.

Signed-off-by: Vincent Mailhol 
Signed-off-by: Masahiro Yamada

checksyscalls: Unconditionally ignore fstat{,at}64

2021-10-08T00:16:28+00:00

These can be replaced by statx().  Since rv32 has a 64-bit time_t we
just never ended up with them in the first place.  This is now an error
due to -Werror.

Suggested-by: Arnd Bergmann 
Reviewed-by: Arnd Bergmann 
Signed-off-by: Palmer Dabbelt

don't make the syscall checking produce errors from warnings

2021-09-06T16:15:09+00:00

Signed-off-by: Stephen Rothwell 
Signed-off-by: Linus Torvalds

arch, mm: wire up memfd_secret system call where relevant

2021-07-08T18:48:21+00:00

Wire up memfd_secret system call on architectures that define
ARCH_HAS_SET_DIRECT_MAP, namely arm64, risc-v and x86.

Link: https://lkml.kernel.org/r/20210518072034.31572-7-rppt@kernel.org
Signed-off-by: Mike Rapoport 
Acked-by: Palmer Dabbelt 
Acked-by: Arnd Bergmann 
Acked-by: Catalin Marinas 
Acked-by: David Hildenbrand 
Acked-by: James Bottomley 
Cc: Alexander Viro 
Cc: Andy Lutomirski 
Cc: Borislav Petkov 
Cc: Christopher Lameter 
Cc: Dan Williams 
Cc: Dave Hansen 
Cc: David Hildenbrand 
Cc: Elena Reshetova 
Cc: Hagen Paul Pfeifer 
Cc: "H. Peter Anvin" 
Cc: Ingo Molnar 
Cc: James Bottomley 
Cc: "Kirill A. Shutemov" 
Cc: Mark Rutland 
Cc: Matthew Wilcox 
Cc: Michael Kerrisk 
Cc: Palmer Dabbelt 
Cc: Paul Walmsley 
Cc: Peter Zijlstra 
Cc: Rick Edgecombe 
Cc: Roman Gushchin 
Cc: Shakeel Butt 
Cc: Shuah Khan 
Cc: Thomas Gleixner 
Cc: Tycho Andersen 
Cc: Will Deacon 
Cc: kernel test robot 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

checksyscalls: fix up mq_timedreceive and stat exceptions

2019-02-19T20:27:53+00:00

mq_timedreceive was spelled incorrectly, and we need exceptions
for new architectures that leave out newstat or stat64, implementing
only statx() now.

Fixes: 48166e6ea47d ("y2038: add 64-bit time_t syscalls to all 32-bit architectures")
Fixes: bf4b6a7d371e ("y2038: Remove stat64 family from default syscall set")
Signed-off-by: Arnd Bergmann

asm-generic: Make time32 syscall numbers optional

2019-02-19T20:27:32+00:00

We don't want new architectures to even provide the old 32-bit time_t
based system calls any more, or define the syscall number macros.

Add a new __ARCH_WANT_TIME32_SYSCALLS macro that gets enabled for all
existing 32-bit architectures using the generic system call table,
so we don't change any current behavior.
Since this symbol is evaluated in user space as well, we cannot use
a Kconfig CONFIG_* macro but have to define it in uapi/asm/unistd.h.

On 64-bit architectures, the same system call numbers mostly refer to
the system calls we want to keep, as they already pass 64-bit time_t.

As new architectures no longer provide these, we need new exceptions
in checksyscalls.sh.

Signed-off-by: Arnd Bergmann

asm-generic: Drop getrlimit and setrlimit syscalls from default list

2019-02-19T09:10:06+00:00

The newer prlimit64 syscall provides all the functionality of getrlimit
and setrlimit syscalls and adds the pid of target process, so future
architectures won't need to include getrlimit and setrlimit.

Therefore drop getrlimit and setrlimit syscalls from the generic syscall
list unless __ARCH_WANT_SET_GET_RLIMIT is defined by the architecture's
unistd.h prior to including asm-generic/unistd.h, and adjust all
architectures using the generic syscall list to define it so that no
in-tree architectures are affected.

Cc: Arnd Bergmann 
Cc: linux-arch@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-hexagon@vger.kernel.org
Cc: uclinux-h8-devel@lists.sourceforge.jp
Signed-off-by: Yury Norov 
Acked-by: Arnd Bergmann 
Acked-by: Mark Salter  [c6x]
Acked-by: James Hogan  [metag]
Acked-by: Ley Foon Tan  [nios2]
Acked-by: Stafford Horne  [openrisc]
Acked-by: Will Deacon  [arm64]
Acked-by: Vineet Gupta  #arch/arc bits
Signed-off-by: Yury Norov 
Signed-off-by: Arnd Bergmann

y2038: add 64-bit time_t syscalls to all 32-bit architectures

2019-02-06T23:13:28+00:00

This adds 21 new system calls on each ABI that has 32-bit time_t
today. All of these have the exact same semantics as their existing
counterparts, and the new ones all have macro names that end in 'time64'
for clarification.

This gets us to the point of being able to safely use a C library
that has 64-bit time_t in user space. There are still a couple of
loose ends to tie up in various areas of the code, but this is the
big one, and should be entirely uncontroversial at this point.

In particular, there are four system calls (getitimer, setitimer,
waitid, and getrusage) that don't have a 64-bit counterpart yet,
but these can all be safely implemented in the C library by wrapping
around the existing system calls because the 32-bit time_t they
pass only counts elapsed time, not time since the epoch. They
will be dealt with later.

Signed-off-by: Arnd Bergmann 
Acked-by: Heiko Carstens 
Acked-by: Geert Uytterhoeven 
Acked-by: Catalin Marinas

parisc: syscalls: ignore nfsservctl for other architectures

2018-12-10T07:26:04+00:00

This adds an exception to the syscall table checking script.

nfsservctl entry is only provided on x86, and there is no
reason to add it elsewhere. However, including it on the
syscall table caused a warning for most configurations on
non-x86.

:696:2: warning: #warning syscall nfsservctl not implemented [-Wcpp]

Signed-off-by: Firoz Khan 
Acked-by: Helge Deller 
Signed-off-by: Helge Deller