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authorLuca Coelho <luciano.coelho@intel.com>2016-05-10 10:30:56 +0300
committerLuca Coelho <luciano.coelho@intel.com>2016-05-10 10:30:56 +0300
commitbae6692c24236d0203f88a444986d86437a858fa (patch)
tree0f9bee1250af3046fa46049736b615b81e60f56e /include/linux/compat.h
parent46167a8fd4248533ad15867e6988ff20e76de641 (diff)
parent57fbcce37be7c1d2622b56587c10ade00e96afa3 (diff)
Merge tag 'mac80211-next-for-davem-2016-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next into master
To synchronize with Kalle, here's just a big change that affects all drivers - removing the duplicated enum ieee80211_band and replacing it by enum nl80211_band. On top of that, just a small documentation update.
Diffstat (limited to 'include/linux/compat.h')
-rw-r--r--include/linux/compat.h21
1 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/compat.h b/include/linux/compat.h
index a76c9172b2eb..f964ef79e0ad 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -5,6 +5,8 @@
* syscall compatibility layer.
*/
+#include <linux/types.h>
+
#ifdef CONFIG_COMPAT
#include <linux/stat.h>
@@ -340,6 +342,12 @@ 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);
+asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd,
+ const struct compat_iovec __user *vec,
+ compat_ulong_t vlen, u32 pos_low, u32 pos_high, int flags);
+asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd,
+ const struct compat_iovec __user *vec,
+ compat_ulong_t vlen, u32 pos_low, u32 pos_high, int flags);
#ifdef __ARCH_WANT_COMPAT_SYS_PREADV64
asmlinkage long compat_sys_preadv64(unsigned long fd,
@@ -713,9 +721,22 @@ asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid,
asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32,
int, const char __user *);
+
+/*
+ * For most but not all architectures, "am I in a compat syscall?" and
+ * "am I a compat task?" are the same question. For architectures on which
+ * they aren't the same question, arch code can override in_compat_syscall.
+ */
+
+#ifndef in_compat_syscall
+static inline bool in_compat_syscall(void) { return is_compat_task(); }
+#endif
+
#else
#define is_compat_task() (0)
+static inline bool in_compat_syscall(void) { return false; }
#endif /* CONFIG_COMPAT */
+
#endif /* _LINUX_COMPAT_H */