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authorHeiko Carstens <heiko.carstens@de.ibm.com>2014-03-05 13:43:51 +0400
committerHeiko Carstens <heiko.carstens@de.ibm.com>2014-03-06 18:35:09 +0400
commit378a10f3ae2e8a67ecc8f548c8e5ff25881bd88a (patch)
treee477b1924739af0585a3b2b6aa8b043a06f7eda0 /include/linux/compat.h
parent291fdb0bcebd5e8db6af767c1fdc522167dad73d (diff)
downloadlinux-378a10f3ae2e8a67ecc8f548c8e5ff25881bd88a.tar.xz
fs/compat: optional preadv64/pwrite64 compat system calls
The preadv64/pwrite64 have been implemented for the x32 ABI, in order to allow passing 64 bit arguments from user space without splitting them into two 32 bit parameters, like it would be necessary for usual compat tasks. Howevert these two system calls are only being used for the x32 ABI, so add __ARCH_WANT_COMPAT defines for these two compat syscalls and make these two only visible for x86. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'include/linux/compat.h')
-rw-r--r--include/linux/compat.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/compat.h b/include/linux/compat.h
index 179b1da9e19f..1c457428ec0a 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -340,6 +340,19 @@ asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd,
asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd,
const struct compat_iovec __user *vec,
compat_ulong_t vlen, u32 pos_low, u32 pos_high);
+
+#ifdef __ARCH_WANT_COMPAT_SYS_PREADV64
+asmlinkage long compat_sys_preadv64(unsigned long fd,
+ const struct compat_iovec __user *vec,
+ unsigned long vlen, loff_t pos);
+#endif
+
+#ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64
+asmlinkage long compat_sys_pwritev64(unsigned long fd,
+ const struct compat_iovec __user *vec,
+ unsigned long vlen, loff_t pos);
+#endif
+
asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int);
asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv,