diff options
author | 2016-04-11 10:41:07 +0300 | |
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committer | 2016-04-13 08:17:18 +0300 | |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/arch/tile/include/asm/uaccess.h | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/arch/tile/include/asm/uaccess.h')
-rw-r--r-- | kernel/arch/tile/include/asm/uaccess.h | 66 |
1 files changed, 10 insertions, 56 deletions
diff --git a/kernel/arch/tile/include/asm/uaccess.h b/kernel/arch/tile/include/asm/uaccess.h index a33276bf5..0a9c42657 100644 --- a/kernel/arch/tile/include/asm/uaccess.h +++ b/kernel/arch/tile/include/asm/uaccess.h @@ -65,6 +65,13 @@ static inline int is_arch_mappable_range(unsigned long addr, #endif /* + * Note that using this definition ignores is_arch_mappable_range(), + * so on tilepro code that uses user_addr_max() is constrained not + * to reference the tilepro user-interrupt region. + */ +#define user_addr_max() (current_thread_info()->addr_limit.seg) + +/* * Test whether a block of memory is a valid user space address. * Returns 0 if the range is valid, nonzero otherwise. */ @@ -471,62 +478,9 @@ copy_in_user(void __user *to, const void __user *from, unsigned long n) #endif -/** - * strlen_user: - Get the size of a string in user space. - * @str: The string to measure. - * - * Context: User context only. This function may sleep. - * - * Get the size of a NUL-terminated string in user space. - * - * Returns the size of the string INCLUDING the terminating NUL. - * On exception, returns 0. - * - * If there is a limit on the length of a valid string, you may wish to - * consider using strnlen_user() instead. - */ -extern long strnlen_user_asm(const char __user *str, long n); -static inline long __must_check strnlen_user(const char __user *str, long n) -{ - might_fault(); - return strnlen_user_asm(str, n); -} -#define strlen_user(str) strnlen_user(str, LONG_MAX) - -/** - * strncpy_from_user: - Copy a NUL terminated string from userspace, with less checking. - * @dst: Destination address, in kernel space. This buffer must be at - * least @count bytes long. - * @src: Source address, in user space. - * @count: Maximum number of bytes to copy, including the trailing NUL. - * - * Copies a NUL-terminated string from userspace to kernel space. - * Caller must check the specified block with access_ok() before calling - * this function. - * - * On success, returns the length of the string (not including the trailing - * NUL). - * - * If access to userspace fails, returns -EFAULT (some data may have been - * copied). - * - * If @count is smaller than the length of the string, copies @count bytes - * and returns @count. - */ -extern long strncpy_from_user_asm(char *dst, const char __user *src, long); -static inline long __must_check __strncpy_from_user( - char *dst, const char __user *src, long count) -{ - might_fault(); - return strncpy_from_user_asm(dst, src, count); -} -static inline long __must_check strncpy_from_user( - char *dst, const char __user *src, long count) -{ - if (access_ok(VERIFY_READ, src, 1)) - return __strncpy_from_user(dst, src, count); - return -EFAULT; -} +extern long strnlen_user(const char __user *str, long n); +extern long strlen_user(const char __user *str); +extern long strncpy_from_user(char *dst, const char __user *src, long); /** * clear_user: - Zero a block of memory in user space. |