1 files changed, 26 insertions, 20 deletions
diff --git a/man3/mbsrtowcs.3 b/man3/mbsrtowcs.3
index e613a14..6844536 100644
--- a/man3/mbsrtowcs.3
+++ b/man3/mbsrtowcs.3
@@ -9,31 +9,31 @@
 .\"   OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html
 .\"   ISO/IEC 9899:1999
 .\"
-.TH mbsrtowcs 3 2023-07-20 "Linux man-pages 6.05.01"
+.TH mbsrtowcs 3 2024-02-26 "Linux man-pages 6.7"
 .SH NAME
-mbsrtowcs \- convert a multibyte string to a wide-character string
+mbsrtowcs \- convert a multibyte string to a wide-character string (restartable)
 .SH LIBRARY
 Standard C library
 .RI ( libc ", " \-lc )
 .SH SYNOPSIS
 .nf
 .B #include <wchar.h>
-.PP
-.BI "size_t mbsrtowcs(wchar_t " dest "[restrict ." len "], const char **restrict " src ,
-.BI "                 size_t " len ", mbstate_t *restrict " ps );
+.P
+.BI "size_t mbsrtowcs(wchar_t " dest "[restrict ." dsize ],
+.BI "                 const char **restrict " src ,
+.BI "                 size_t " dsize ", mbstate_t *restrict " ps );
 .fi
 .SH DESCRIPTION
 If
 .I dest
-is not NULL, the
-.BR mbsrtowcs ()
-function converts the
+is not NULL,
+convert the
 multibyte string
 .I *src
 to a wide-character string starting at
 .IR dest .
 At most
-.I len
+.I dsize
 wide characters are written to
 .IR dest .
 The shift state
@@ -63,7 +63,7 @@ and
 is set to
 .BR EILSEQ .
 .IP \[bu]
-.I len
+.I dsize
 non-L\[aq]\e0\[aq] wide characters have been stored at
 .IR dest .
 In this case,
@@ -86,16 +86,16 @@ is set to NULL, and the number of wide
 characters written to
 .IR dest ,
 excluding the terminating null wide character, is returned.
-.PP
+.P
 If
 .I dest
 is NULL,
-.I len
+.I dsize
 is ignored,
 and the conversion proceeds as above,
 except that the converted wide characters are not written out to memory,
 and that no length limit exists.
-.PP
+.P
 In both of the above cases,
 if
 .I ps
@@ -103,16 +103,23 @@ is NULL, a static anonymous
 state known only to the
 .BR mbsrtowcs ()
 function is used instead.
-.PP
+.P
+In order to avoid the case 2 above, the programmer should make sure
+.I dsize
+is
+greater than or equal to
+.IR "mbsrtowcs(NULL,src,0,ps)+1" .
+.P
 The programmer must ensure that there is room for at least
-.I len
+.I dsize
 wide
 characters at
 .IR dest .
+.P
+This function is a restartable version of
+.BR mbstowcs (3).
 .SH RETURN VALUE
-The
-.BR mbsrtowcs ()
-function returns the number of wide characters that make
+The number of wide characters that make
 up the converted part of the wide-character string, not including the
 terminating null wide character.
 If an invalid multibyte sequence was
@@ -140,7 +147,6 @@ T}	Thread safety	T{
 MT-Unsafe race:mbsrtowcs/!ps
 T}
 .TE
-.sp 1
 .SH STANDARDS
 C11, POSIX.1-2008.
 .SH HISTORY
@@ -152,7 +158,7 @@ depends on the
 .B LC_CTYPE
 category of the
 current locale.
-.PP
+.P
 Passing NULL as
 .I ps
 is not multithread safe.