diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-05-05 13:12:53 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2020-05-05 23:46:09 +0300 |
| commit | c3b3f52476412a3899f2c65b220075aceb18dd2c (patch) | |
| tree | 00314d287eac059d9a74b4dd57b761d9943a1742 /arch/x86/include/asm/compat.h | |
| parent | 5456ffdee666c66e27ccc1006f9afe83ad55559f (diff) | |
| download | linux-c3b3f52476412a3899f2c65b220075aceb18dd2c.tar.xz | |
signal: refactor copy_siginfo_to_user32
Factor out a copy_siginfo_to_external32 helper from
copy_siginfo_to_user32 that fills out the compat_siginfo, but does so
on a kernel space data structure. With that we can let architectures
override copy_siginfo_to_user32 with their own implementations using
copy_siginfo_to_external32. That allows moving the x32 SIGCHLD purely
to x86 architecture code.
As a nice side effect copy_siginfo_to_external32 also comes in handy
for avoiding a set_fs() call in the coredump code later on.
Contains improvements from Eric W. Biederman <ebiederm@xmission.com>
and Arnd Bergmann <arnd@arndb.de>.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/x86/include/asm/compat.h')
| -rw-r--r-- | arch/x86/include/asm/compat.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/x86/include/asm/compat.h b/arch/x86/include/asm/compat.h index 52e9f3480f69..d4edf281fff4 100644 --- a/arch/x86/include/asm/compat.h +++ b/arch/x86/include/asm/compat.h @@ -214,7 +214,11 @@ static inline bool in_compat_syscall(void) #endif struct compat_siginfo; -int __copy_siginfo_to_user32(struct compat_siginfo __user *to, - const kernel_siginfo_t *from, bool x32_ABI); + +#ifdef CONFIG_X86_X32_ABI +int copy_siginfo_to_user32(struct compat_siginfo __user *to, + const kernel_siginfo_t *from); +#define copy_siginfo_to_user32 copy_siginfo_to_user32 +#endif /* CONFIG_X86_X32_ABI */ #endif /* _ASM_X86_COMPAT_H */ |