Remove the internal implementation details of wrapping syscalls,

which do not match the reality anyway.

Approved by:	deischen, bde

1 files changed, 0 insertions, 46 deletions

diff --git a/lib/libc/sys/dup.2 b/lib/libc/sys/dup.2
index d9a7a3f..2d57eab 100644
--- a/lib/libc/sys/dup.2
+++ b/lib/libc/sys/dup.2
@@ -115,52 +115,6 @@ and
 is a valid descriptor, then
 .Fn dup2
 is successful, and does nothing.
-.Sh IMPLEMENTATION NOTES
-In the non-threaded library
-.Fn dup
-is implemented as the
-.Va dup
-syscall.
-.Pp
-In the threaded library, the
-.Va dup
-syscall is assembled to
-.Fn _thread_sys_dup
-and
-.Fn dup
-is implemented as a function which locks
-.Fa oldd
-for read and write, then calls
-.Fn _thread_sys_dup .
-Before returning,
-.Fn dup
-unlocks
-.Fa oldd .
-.Pp
-In the non-threaded library
-.Fn dup2
-is implemented as the
-.Va dup2
-syscall.
-.Pp
-In the threaded library, the
-.Va dup2
-syscall is assembled to
-.Fn _thread_sys_dup2
-and
-.Fn dup2
-is implemented as a function which locks both
-.Fa oldd
-and
-.Fa newd
-for read and write, then calls
-.Fn _thread_sys_dup2 .
-Before returning,
-.Fn dup2
-unlocks
-.Fa oldd .
-and
-.Fa newd .
 .Sh RETURN VALUES
 The value -1 is returned if an error occurs in either call.
 The external variable