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Re: manual: cuserid is mtasurace if not passed a string

On Nov  7, 2014, Alexandre Oliva <> wrote:

> During the MTASC-Safety code review, in my analysis of cuserid, I failed
> to notice the use of the static buffer in case a buffer is not passed as
> an argument.  Oops.  This patch fixes the error.  Ok to install?

Ping?  I supose this is trivial enough that I could check it in without
a review by a third party, but I'll wait a couple more days just in

> From: Alexandre Oliva <>

> for  ChangeLog

> 	* manual/users.texi (cuserid): Fix MT-Safety note for the case
> 	of not passing it a buffer.
> 	Reported by Peng Haitao.
> ---
>  manual/users.texi |    5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)

> diff --git a/manual/users.texi b/manual/users.texi
> index a14a256..e8f0f3b 100644
> --- a/manual/users.texi
> +++ b/manual/users.texi
> @@ -927,8 +927,9 @@ this function or to @code{cuserid}.
>  @comment stdio.h
>  @comment POSIX.1
>  @deftypefun {char *} cuserid (char *@var{string})
> -@safety{@prelim{}@mtsafe{@mtslocale{}}@asunsafe{@ascudlopen{} @ascuplugin{} @ascuheap{} @asulock{}}@acunsafe{@acucorrupt{} @aculock{} @acsfd{} @acsmem{}}}
> -@c cuserid @mtslocale @ascudlopen @ascuplugin @ascuheap @asulock @acucorrupt @aculock @acsfd @acsmem
> +@safety{@prelim{}@mtunsafe{@mtasurace{:cuserid/!string} @mtslocale{}}@asunsafe{@ascudlopen{} @ascuplugin{} @ascuheap{} @asulock{}}@acunsafe{@acucorrupt{} @aculock{} @acsfd{} @acsmem{}}}
> +@c cuserid @mtasurace:cuserid/!string @mtslocale @ascudlopen @ascuplugin @ascuheap @asulock @acucorrupt @aculock @acsfd @acsmem
> +@c   if string is NULL, cuserid will overwrite and return a static buffer
>  @c  geteuid dup ok
>  @c  getpwuid_r dup @mtslocale @ascudlopen @ascuplugin @ascuheap @asulock @acucorrupt @aculock @acsfd @acsmem
>  @c  strncpy dup ok

Alexandre Oliva, freedom fighter
You must be the change you wish to see in the world. -- Gandhi
Be Free! --   FSF Latin America board member
Free Software Evangelist|Red Hat Brasil GNU Toolchain Engineer

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