Add or correct section number in .Xr. Use .Vt or .Fn

instead of .Xr when needed

lib/libc/gen/getpwent.3

@@ -213,7 +213,7 @@ have no return value.
 .Sh ERRORS
 These routines may fail for any of the errors specified in
 .Xr open 2 ,
-.Xr dbopen 2 ,
+.Xr dbopen 3 ,
 .Xr socket 2 ,
 and
 .Xr connect 2 ,

lib/libc/gen/popen.3

@@ -122,7 +122,7 @@ The
 function waits for the associated process to terminate
 and returns the exit status of the command
 as returned by
-.Fn wait4 .
+.Xr wait4 2 .
 .Sh RETURN VALUES
 The
 .Fn popen
@@ -147,7 +147,7 @@ command, if
 already
 .Dq pclosed ,
 or if
-.Xr wait4
+.Xr wait4 2
 returns an error.
 .Sh ERRORS
 The

lib/libc/gen/statvfs.3

@@ -63,7 +63,7 @@ structure contains the following members:
 .It Va f_namemax
 The maximum length in bytes of a file name on this file system.
 Applications should use
-.Xr pathconf 3
+.Xr pathconf 2
 instead.
 .It Va f_fsid
 Not meaningful in this implementation.
@@ -141,9 +141,9 @@ functions may fail for any of the reasons documented for
 or
 .Xr fstatfs 2
 and
-.Xr pathconf 3
+.Xr pathconf 2
 or
-.Xr fpathconf 3 ,
+.Xr fpathconf 2 ,
 respectively.
 In addition,
 .Fn statvfs
@@ -157,8 +157,8 @@ represented by the data types used in
 .Vt "struct statvfs" .
 .El
 .Sh SEE ALSO
-.Xr statfs 2 ,
-.Xr pathconf 3
+.Xr pathconf 2 ,
+.Xr statfs 2
 .Sh STANDARDS
 The
 .Fn statvfs

lib/libc/gen/tzset.3

@@ -108,7 +108,7 @@ The
 .Fn tzsetwall
 function
 sets things up so that
-.Xr localtime
+.Xr localtime 3
 returns the best available approximation of local wall clock time.
 .Sh SPECIFICATION FORMAT
 When

lib/libc/stdio/fflush.3

@@ -77,7 +77,7 @@ For input streams this discards any input read from the underlying object
 but not yet obtained via
 .Xr getc 3 ;
 this includes any text pushed back via
-.Xr ungetc .
+.Xr ungetc 3 .
 .Sh RETURN VALUES
 Upon successful completion 0 is returned.
 Otherwise,

lib/libc/sys/getfsstat.2

@@ -55,7 +55,7 @@ The
 .Fa buf
 argument
 is a pointer to
-.Xr statfs
+.Vt statfs
 structures defined as follows:
 .Bd -literal
 typedef struct fsid { int32_t val[2]; } fsid_t;	/* file system id type */

lib/libc/sys/getsockname.2

@@ -88,7 +88,7 @@ process address space.
 .Xr socket 2
 .Sh BUGS
 Names bound to sockets in the UNIX domain are inaccessible;
-.Xr getsockname
+.Fn getsockname
 returns a zero length name.
 .Sh HISTORY
 The

lib/libc/sys/sigsuspend.2

@@ -64,7 +64,7 @@ of the signal are examined to determine that there is no work
 to be done, and the process pauses awaiting work by using
 .Fn sigsuspend
 with the previous mask returned by
-.Xr sigprocmask .
+.Xr sigprocmask 2 .
 .Sh RETURN VALUES
 The
 .Fn sigsuspend