kernel.git/arch/csky/kernel/syscall.c, branch masterHosts the 0x221E linux distro kernel.
https://git.0xinfinity.dev/distro/kernel.git/atom?h=master2024-06-25T13:57:38Zsyscalls: mmap(): use unsigned offset type consistently2024-06-25T13:57:38ZArnd Bergmann2024-06-04T12:20:26Zurn:sha1:295f10061af024099440b46602bcc47364551db7
Most architectures that implement the old-style mmap() with byte offset
use 'unsigned long' as the type for that offset, but microblaze and
riscv have the off_t type that is shared with userspace, matching the
prototype in include/asm-generic/syscalls.h.
Make this consistent by using an unsigned argument everywhere. This
changes the behavior slightly, as the argument is shifted to a page
number, and an user input with the top bit set would result in a
negative page offset rather than a large one as we use elsewhere.
For riscv, the 32-bit sys_mmap2() definition actually used a custom
type that is different from the global declaration, but this was
missed due to an incorrect type check.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
csky: System Call2018-10-25T15:36:19ZGuo Ren2018-09-05T06:25:08Zurn:sha1:4859bfca11c7d63d55175bcd85a75d6cee4b7184
This patch adds files related to syscall.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>