Peng, I dug through some old mails... On Thu, Sep 15, 2011 at 10:34 AM, Peng Haitao <penght@xxxxxxxxxxxxxx> wrote: > > The functions getpwnam() and getpwuid() return a pointer to a static area which > is overwritten by a subsequent call to them. So they are thread-unsafe. I've applied this to my local branch. Cheers, Michael > Signed-off-by: Peng Haitao <penght@xxxxxxxxxxxxxx> > --- > man3/getpwnam.3 | 15 ++++++++++++++- > 1 files changed, 14 insertions(+), 1 deletions(-) > > diff --git a/man3/getpwnam.3 b/man3/getpwnam.3 > index 649da01..679477d 100644 > --- a/man3/getpwnam.3 > +++ b/man3/getpwnam.3 > @@ -32,7 +32,7 @@ > .\" Modified 2003-11-15 by aeb > .\" 2008-11-07, mtk, Added an example program for getpwnam_r(). > .\" > -.TH GETPWNAM 3 2010-10-21 "GNU" "Linux Programmer's Manual" > +.TH GETPWNAM 3 2011-09-15 "GNU" "Linux Programmer's Manual" > .SH NAME > getpwnam, getpwnam_r, getpwuid, getpwuid_r \- get password file entry > .SH SYNOPSIS > @@ -206,6 +206,19 @@ Insufficient buffer space supplied. > .TP > .I /etc/passwd > local password database file > +.SH ATTRIBUTES > +.SS Multithreading (see pthreads(7)) > +The two functions > +.BR getpwnam () > +and > +.BR getpwuid () > +are not thread_safe. > +.LP > +The two functions > +.BR getpwnam_r () > +and > +.BR getpwuid_r () > +are thread-safe. > .SH "CONFORMING TO" > SVr4, 4.3BSD, POSIX.1-2001. > The > -- > 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 -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Author of "The Linux Programming Interface"; http://man7.org/tlpi/ -- 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
