Bug 2448 - msg_controllen should be typed as socklen_t
Summary: msg_controllen should be typed as socklen_t
Status: RESOLVED WONTFIX
Alias: None
Product: glibc
Classification: Unclassified
Component: libc (show other bugs)
Version: 2.4
: P2 normal
Target Milestone: ---
Assignee: Ulrich Drepper
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2006-03-12 18:53 UTC by Michael Kerrisk
Modified: 2021-09-15 02:22 UTC (History)
2 users (show)

See Also:
Host:
Target:
Build:
Last reconfirmed:
fweimer: security-

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Michael Kerrisk 2006-03-12 18:53:01 UTC 
In <bits/socket.h>, the msg_controllen field of the msghdr 
field is typed as size_t (perhaps because the definition was
based on the kernel_size_t used in the Linux kernel).  
However, POSIX reguires this field to be typed as socklen_t,
and glibc should probably do this.
Comment 1 Ulrich Drepper 2006-04-02 17:20:42 UTC 
Tell this to the kernel people.  They define the data structure.  It's not
possible to use socklen_t because it  has a different size on 64-bit platforms.
Comment 2 Michael Kerrisk 2006-04-03 00:05:57 UTC 
Subject: Re:  msg_controllen should be typed as socklen_t

> It's not possible to use socklen_t because it has a different
> size on 64-bit platforms.

The referrent of the second 'it' in that sentence was unclear.  I'm 
assuming 'it' == sizeof(__kernel_size_t), right?

Cheers,

Michael
Comment 3 Jackie Rosen 2014-02-16 19:41:21 UTC Comment hidden (spam)
Comment 4 namboru 2021-09-15 02:22:43 UTC Comment hidden (spam)