Fixed a bunch of man page cross references that were

in the main text of various man pages.

Thanks to Warner Losh for adding an option to manck to allow
it to scan the entire man page looking for bogus xrefs, instead
of just checking the SEE ALSO section.

lib/libc/compat-43/sigvec.2

@@ -140,7 +140,7 @@ with names as in the include file
 .It Dv SIGQUIT No "	create core image" "	quit program"
 .It Dv SIGILL No "	create core image" "	illegal instruction"
 .It Dv SIGTRAP No "	create core image" "	trace trap"
-.It Dv SIGABRT No "	create core image" Xr 	abort 2
+.It Dv SIGABRT No "	create core image" Xr 	abort 3
 call (formerly
 .Dv SIGIOT )
 .It Dv SIGEMT No "	create core image" "	emulate instruction executed"

lib/libc/gen/getmntinfo.3

@@ -104,5 +104,5 @@ will modify the same object.
 The memory allocated by
 .Fn getmntinfo
 cannot be
-.Xr free 2 Ns 'd
+.Xr free 3 Ns 'd
 by the application.

lib/libc/gen/getvfsent.3

@@ -1,4 +1,4 @@
-.\"	$Id$
+.\"	$Id: getvfsent.3,v 1.1 1994/09/25 01:38:30 wollman Exp $
 .\"	Written by Garrett A. Wollman, September 1994.
 .\"	This manual page is in the public domain.
 .\"
@@ -179,7 +179,7 @@ fails,
 .Va errno
 may be set to one of the values documented for
 .Xr fork 2 ,
-.Xr waitpid 3 ,
+.Xr waitpid 2 ,
 .Xr chdir 2 ,
 or
 .Xr execlp 3 ,

lib/libc/gen/setjmp.3

@@ -126,7 +126,7 @@ pairs save and restore the signal mask while
 .Fn _setjmp Ns / Ns Fn _longjmp
 pairs save and restore only the register set and the stack.
 (See
-.Fn sigmask 2 . )
+.Fn sigprocmask 2 . )
 .Pp
 The
 .Fn sigsetjmp Ns / Ns Fn siglongjmp
@@ -145,7 +145,7 @@ routine calls the routine
 If
 .Fn longjmperror
 returns the program is aborted (see
-.Xr abort 2 ) .
+.Xr abort 3 ) .
 The default version of
 .Fn longjmperror
 prints the message

lib/libc/gen/sysconf.3

@@ -64,7 +64,7 @@ The available values are as follows:
 .Pp
 .It Li _SC_ARG_MAX
 The maximum bytes of argument to
-.Xr exec 2 .
+.Xr execve 2 .
 .It Li _SC_CHILD_MAX
 The maximum number of simultaneous processes per user id.
 .It Li _SC_CLK_TCK

lib/libc/gen/sysctl.3

@@ -51,7 +51,7 @@ The information available from
 consists of integers, strings, and tables.
 Information may be retrieved and set from the command interface
 using the 
-.Xr sysctl 1
+.Xr sysctl 8
 utility.
 .Pp
 Unless explicitly noted below,
@@ -260,7 +260,7 @@ information.
 .Bl -tag -width "123456"
 .It Li KERN_ARGMAX
 The maximum bytes of argument to
-.Xr exec 2 .
+.Xr execve 2 .
 .It Li KERN_BOOTTIME
 A
 .Va struct timeval

lib/libc/net/linkaddr.3

@@ -75,7 +75,7 @@ may contain
 an optional network interface identifier of the form
 .Dq "name unit-number" ,
 suitable for the first argument to
-.Xr ifconfig 4 ,
+.Xr ifconfig 8 ,
 followed in all cases by a colon and
 an interface address in the form of
 groups of hexadecimal digits

lib/libc/net/rcmd.3

@@ -163,7 +163,7 @@ and
 .Fn ruserok
 return \-1.
 If the local domain (as obtained from
-.Xr gethostname 2 )
+.Xr gethostname 3 )
 is the same as the remote domain, only the machine name need be specified.
 .Pp
 The

lib/libc/stdlib/system.3

@@ -76,7 +76,7 @@ The
 .Fn system
 function
 returns the exit status of the shell, or \-1 if the
-.Xr wait 3
+.Xr wait 2
 for the shell failed.
 A return value of 127 means the execution of the shell
 failed.

lib/libc/sys/fcntl.2

@@ -295,10 +295,10 @@ This semantic means that applications must be aware of any files that
 a subroutine library may access.
 For example if an application for updating the password file locks the
 password file database while making the update, and then calls
-.Xr getpwname 3
+.Xr getpwnam 3
 to retrieve a record,
 the lock will be lost because 
-.Xr getpwname 3
+.Xr getpwnam 3
 opens, reads, and closes the password database.
 The database close will release all locks that the process has
 associated with the database, even if the library routine never

lib/libc/sys/intro.2

@@ -159,9 +159,9 @@ or a read (write) request was made to a file that was only open for
 writing (reading).
 .It Er 10 ECHILD Em "\&No child processes" .
 A
-.Xr wait
+.Xr wait 2
 or
-.Xr waitpid
+.Xr waitpid 2
 function was executed by a process that had no existing or unwaited-for
 child processes.
 .It Er 11 EDEADLK Em "Resource deadlock avoided" .
@@ -187,7 +187,7 @@ in a manner which would have conflicted with the request.
 .It Er 17 EEXIST Em "File exists" .
 An existing file was mentioned in an inappropriate context,
 for instance, as the new link name in a
-.Xr link
+.Xr link 2
 function.
 .It Er 18 EXDEV Em "Improper link" .
 A hard link to a file on another file system
@@ -205,9 +205,9 @@ An attempt was made to open a directory with write mode specified.
 .It Er 22 EINVAL Em "Invalid argument" .
 Some invalid argument was supplied. (For example,
 specifying an undefined signal to a
-.Xr signal
+.Xr signal 3
 or
-.Xr kill
+.Xr kill 2
 function).
 .It Er 23 ENFILE Em "Too many open files in system" .
 Maximum number of file descriptors allowable on the system
@@ -227,7 +227,7 @@ special device for which the operation was inappropriate.
 The new process was a pure procedure (shared text) file
 which was open for writing by another process, or
 while the pure procedure file was being executed an
-.Xr open
+.Xr open 2
 call requested write access.
 .It Er 27 EFBIG Em "File too large" .
 The size of a file exceeded the maximum (about
@@ -236,7 +236,7 @@ The size of a file exceeded the maximum (about
 bytes).
 .It Er 28 ENOSPC Em "Device out of space" .
 A
-.Xr write
+.Xr write 2
 to an ordinary file, the creation of a
 directory or symbolic link, or the creation of a directory
 entry failed because no more disk blocks were available
@@ -245,7 +245,7 @@ created file failed because no more inodes were available
 on the file system.
 .It Er 29 ESPIPE Em "Illegal seek" .
 An
-.Xr lseek
+.Xr lseek 2
 function was issued on a socket, pipe or
 .Tn FIFO .
 .It Er 30 EROFS Em "Read-only file system" .
@@ -344,12 +344,12 @@ An operation on a socket or pipe was not performed because
 the system lacked sufficient buffer space or because a queue was full.
 .It Er 56 EISCONN Em "Socket is already connected" .
 A
-.Xr connect
+.Xr connect 2
 request was made on an already connected socket; or,
 a
-.Xr sendto
+.Xr sendto 2
 or
-.Xr sendmsg
+.Xr sendmsg 2
 request on a connected socket specified a destination
 when already connected.
 .It Er 57 ENOTCONN Em "Socket is not connected" .
@@ -363,9 +363,9 @@ had already been shut down with a previous
 call.
 .It Er 60 ETIMEDOUT Em "Operation timed out" .
 A
-.Xr connect
+.Xr connect 2
 or
-.Xr send
+.Xr send 2
 request failed because the connected party did not
 properly respond after a period of time.  (The timeout
 period is dependent on the communication protocol.)
@@ -397,7 +397,7 @@ was supplied to a remove directory or rename call.
 The quota system ran out of table entries.
 .It Er 69 EDQUOT Em "Disc quota exceeded" .
 A 
-.Xr write
+.Xr write 2
 to an ordinary file, the creation of a
 directory or symbolic link, or the creation of a directory
 entry failed because the user's quota of disk blocks was
@@ -450,7 +450,7 @@ A new process is created by a currently active process; (see
 The parent process ID of a process is initially the process ID of its creator.
 If the creating process exits,
 the parent process ID of each child is set to the ID of a system process,
-.Xr init .
+.Xr init 8 .
 .It  Process Group
 Each active process is a member of a process group that is identified by
 a non-negative integer called the process group ID.  This is the process
@@ -701,4 +701,5 @@ of a certain format.  An Address Family is the set of addresses
 for a specific group of protocols.  Each socket has an address
 chosen from the address family in which the socket was created.
 .Sh SEE ALSO
-intro(3), perror(3)
+.Xr intro 3 ,
+.Xr perror 3

lib/libc/sys/mmap.2

@@ -124,7 +124,7 @@ Notify the kernel that the region may contain semaphores and that special
 handling may be necessary.
 .It Dv MAP_INHERIT
 Permit regions to be inherited across
-.Xr exec 2
+.Xr execve 2
 system calls.
 .It Dv MAP_PRIVATE
 Modifications are private.

lib/libc/sys/sigaction.2

@@ -234,7 +234,7 @@ with names as in the include file
 .It Dv SIGQUIT No "	create core image" "	quit program"
 .It Dv SIGILL No "	create core image" "	illegal instruction"
 .It Dv SIGTRAP No "	create core image" "	trace trap"
-.It Dv SIGABRT No "	create core image" Xr 	abort 2
+.It Dv SIGABRT No "	create core image" Xr 	abort 3
 call (formerly
 .Dv SIGIOT )
 .It Dv SIGEMT No "	create core image" "	emulate instruction executed"

lib/libc/sys/vfork.2

@@ -48,15 +48,15 @@ space of the old process, which is horrendously inefficient in a paged
 environment.  It is useful when the purpose of
 .Xr fork 2
 would have been to create a new system context for an
-.Xr execve .
+.Xr execve 2 .
 .Fn Vfork
 differs from
-.Xr fork
+.Xr fork 2
 in that the child borrows the parent's memory and thread of
 control until a call to
 .Xr execve 2
 or an exit (either by a call to
-.Xr exit 2
+.Xr exit 3
 or abnormally.)
 The parent process is suspended while the child is using its resources.
 .Pp
@@ -74,19 +74,19 @@ since the eventual return from
 .Fn vfork
 would then return to a no longer existent stack frame.
 Be careful, also, to call
-.Xr _exit
+.Xr _exit 2
 rather than
-.Xr exit
+.Xr exit 3
 if you can't
-.Xr execve ,
+.Xr execve 2 ,
 since
-.Xr exit
+.Xr exit 3
 will flush and close standard I/O channels, and thereby mess up the
 parent processes standard I/O data structures.
 (Even with
-.Xr fork
+.Xr fork 2
 it is wrong to call
-.Xr exit
+.Xr exit 3
 since buffered data would then be flushed twice.)
 .Sh SEE ALSO
 .Xr fork 2 ,
@@ -95,15 +95,15 @@ since buffered data would then be flushed twice.)
 .Xr wait 2 ,
 .Sh DIAGNOSTICS
 Same as for
-.Xr fork .
+.Xr fork 2 .
 .Sh BUGS
 This system call will be eliminated when proper system sharing
 mechanisms are implemented. 
 Users should not depend on the memory
 sharing semantics of
-.Xr vfork
+.Xr vfork 2
 as it will, in that case, be made synonymous to
-.Xr fork .
+.Xr fork 2 .
 .Pp
 To avoid a possible deadlock situation,
 processes that are children in the middle