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Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull compat time conversion changes from Peter Anvin:
 "Despite the branch name this is really neither an x86 nor an
  x32-specific patchset, although it the implementation of the
  discussions that followed the x32 security hole a few months ago.

  This removes get/put_compat_timespec/val() and replaces them with
  compat_get/put_timespec/val() which are savvy as to the current status
  of COMPAT_USE_64BIT_TIME.

  It removes several unused and/or incorrect/misleading functions (like
  compat_put_timeval_convert which doesn't in fact do any conversion)
  and also replaces several open-coded implementations what is now
  called compat_convert_timespec() with that function"

* 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  compat: Fix sparse address space warnings
  compat: Get rid of (get|put)_compat_time(val|spec)
This commit is contained in:
Linus Torvalds
2014-04-02 12:51:41 -07:00
parent c6f21243ce dce44e03b0
commit 7125764c5d
7 changed files with 77 additions and 99 deletions
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23
include/linux/compat.h
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@@ -146,27 +146,24 @@ struct compat_sigaction {
compat_sigset_t sa_mask __packed;
};
/*
* These functions operate strictly on struct compat_time*
*/
extern int get_compat_timespec(struct timespec *,
const struct compat_timespec __user *);
extern int put_compat_timespec(const struct timespec *,
struct compat_timespec __user *);
extern int get_compat_timeval(struct timeval *,
const struct compat_timeval __user *);
extern int put_compat_timeval(const struct timeval *,
struct compat_timeval __user *);
/*
* These functions operate on 32- or 64-bit specs depending on
* COMPAT_USE_64BIT_TIME, hence the void user pointer arguments and the
* naming as compat_get/put_ rather than get/put_compat_.
* COMPAT_USE_64BIT_TIME, hence the void user pointer arguments.
*/
extern int compat_get_timespec(struct timespec *, const void __user *);
extern int compat_put_timespec(const struct timespec *, void __user *);
extern int compat_get_timeval(struct timeval *, const void __user *);
extern int compat_put_timeval(const struct timeval *, void __user *);
/*
* This function convert a timespec if necessary and returns a *user
* space* pointer. If no conversion is necessary, it returns the
* initial pointer. NULL is a legitimate argument and will always
* output NULL.
*/
extern int compat_convert_timespec(struct timespec __user **,
const void __user *);
struct compat_iovec {
compat_uptr_t iov_base;
compat_size_t iov_len;