New: two issues in unix(7)

https://bugzilla.kernel.org/show_bug.cgi?id=19812

Summary: two issues in unix(7)
Product: Documentation
Version: unspecified
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: man-pages
AssignedTo: documentation_man-pages-ztI5WcYan/[email protected]
ReportedBy: [email protected]
Regression: No

There are two smaller issues in the unix(7) man page:

1) The part about "pathname" sockets suggests usage of sizeof(sa_family_t) + strlen(sun_path) + 1 for calculating the sockaddr size. Due to alignment/padding this is probably not a good idea. Instead, one should use offsetof(struct sockaddr_un, sun_path) + strlen() + 1 or something like that.

2) The part about "abstract" sockets is misleading as it suggests that the sockaddr returned by getsockname() would necessarily have the size of sizeof(struct sockaddr), which however is not the case: getsockname() returns exactly the sockaddr size that was passed in on bind(). In particular, two sockets that are bound to the same sockaddr but different sizes are completely independant.

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https://bugzilla.kernel.org/show_bug.cgi?id=19812

Michael Kerrisk <[email protected]> changed:

What |Removed |Added
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                 CC|                            |[email protected]
         AssignedTo|documentation_man-pages@ker |[email protected]
                   |nel-bugs.osdl.org           |

--- Comment #1 from Michael Kerrisk <[email protected]> 2010-10-10 04:51:31 --- Hi Lennart,

A hint for the future. The two issues here are closely related, but distinct enough that it would have been easier if they were filed as two bug reports. But, I will deal with them both here.

Thanks,

Michael

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