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author | James Morris <james.l.morris@oracle.com> | 2012-05-04 12:46:40 +1000 |
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committer | James Morris <james.l.morris@oracle.com> | 2012-05-04 12:46:40 +1000 |
commit | 898bfc1d46bd76f8ea2a0fbd239dd2073efe2aa3 (patch) | |
tree | e6e666085abe674dbf6292555961fe0a0f2e2d2f /arch/x86/lib/usercopy_64.c | |
parent | 08162e6a23d476544adfe1164afe9ea8b34ab859 (diff) | |
parent | 69964ea4c7b68c9399f7977aa5b9aa6539a6a98a (diff) | |
download | blackbird-op-linux-898bfc1d46bd76f8ea2a0fbd239dd2073efe2aa3.tar.gz blackbird-op-linux-898bfc1d46bd76f8ea2a0fbd239dd2073efe2aa3.zip |
Merge tag 'v3.4-rc5' into next
Linux 3.4-rc5
Merge to pull in prerequisite change for Smack:
86812bb0de1a3758dc6c7aa01a763158a7c0638a
Requested by Casey.
Diffstat (limited to 'arch/x86/lib/usercopy_64.c')
-rw-r--r-- | arch/x86/lib/usercopy_64.c | 49 |
1 files changed, 0 insertions, 49 deletions
diff --git a/arch/x86/lib/usercopy_64.c b/arch/x86/lib/usercopy_64.c index b7c2849ffb66..0d0326f388c0 100644 --- a/arch/x86/lib/usercopy_64.c +++ b/arch/x86/lib/usercopy_64.c @@ -9,55 +9,6 @@ #include <asm/uaccess.h> /* - * Copy a null terminated string from userspace. - */ - -#define __do_strncpy_from_user(dst,src,count,res) \ -do { \ - long __d0, __d1, __d2; \ - might_fault(); \ - __asm__ __volatile__( \ - " testq %1,%1\n" \ - " jz 2f\n" \ - "0: lodsb\n" \ - " stosb\n" \ - " testb %%al,%%al\n" \ - " jz 1f\n" \ - " decq %1\n" \ - " jnz 0b\n" \ - "1: subq %1,%0\n" \ - "2:\n" \ - ".section .fixup,\"ax\"\n" \ - "3: movq %5,%0\n" \ - " jmp 2b\n" \ - ".previous\n" \ - _ASM_EXTABLE(0b,3b) \ - : "=&r"(res), "=&c"(count), "=&a" (__d0), "=&S" (__d1), \ - "=&D" (__d2) \ - : "i"(-EFAULT), "0"(count), "1"(count), "3"(src), "4"(dst) \ - : "memory"); \ -} while (0) - -long -__strncpy_from_user(char *dst, const char __user *src, long count) -{ - long res; - __do_strncpy_from_user(dst, src, count, res); - return res; -} -EXPORT_SYMBOL(__strncpy_from_user); - -long -strncpy_from_user(char *dst, const char __user *src, long count) -{ - long res = -EFAULT; - if (access_ok(VERIFY_READ, src, 1)) - return __strncpy_from_user(dst, src, count); - return res; -} -EXPORT_SYMBOL(strncpy_from_user); - -/* * Zero Userspace */ |