The function ttyname() uses a static variable "ttyname_buf", so it is not thread-safe. Signed-off-by: Peng Haitao <penght@xxxxxxxxxxxxxx> --- man3/ttyname.3 | 11 ++++++++++- 1 files changed, 10 insertions(+), 1 deletions(-) diff --git a/man3/ttyname.3 b/man3/ttyname.3 index 08fb2b7..5047e94 100644 --- a/man3/ttyname.3 +++ b/man3/ttyname.3 @@ -23,7 +23,7 @@ .\" Modified 2001-12-13, Martin Schulze <joey@xxxxxxxxxxxx> .\" Added ttyname_r, aeb, 2002-07-20 .\" -.TH TTYNAME 3 2008-07-14 "Linux" "Linux Programmer's Manual" +.TH TTYNAME 3 20011-09-06 "Linux" "Linux Programmer's Manual" .SH NAME ttyname, ttyname_r \- return name of a terminal .SH SYNOPSIS @@ -70,6 +70,15 @@ File descriptor does not refer to a terminal device. .B ERANGE .I buflen was too small to allow storing the pathname. +.SH ATTRIBUTES +.SS Multithreading (see pthreads(7)) +The +.BR ttyname () +function is not thread-safe. +.LP +The +.BR ttyname_r () +function is thread-safe. .SH "CONFORMING TO" 4.2BSD, POSIX.1-2001. .SH "SEE ALSO" -- 1.7.1 -- Best Regards, Peng Haitao -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
