New: man fcntl isn't clear about how to get seal-related constants

https://bugzilla.kernel.org/show_bug.cgi?id=156231

Bug ID: 156231
Summary: man fcntl isn't clear about how to get seal-related
constants
Product: Documentation
Version: unspecified
Hardware: All
OS: Linux
Status: NEW
Severity: normal
Priority: P1
Component: man-pages
Assignee: documentation_man-pages-ztI5WcYan/[email protected]
Reporter: [email protected]
Regression: No

man fcntl tells you to include unistd.h and fcntl.h - but to get the seal-related constants, you need (it seems) to include linux/fcntl.h.

The need for _GNU_SOURCE (etc.) for other constants is called out clearly enough in the CONFORMING TO section. The directions for the seal-related constants are a bit unclear.

(Perhaps this is just one of those things you're supposed to know, but pages such as shm_open and 2 stat show that being clear about the headers is not without precedent...)

Stack Overflow question:
http://stackoverflow.com/questions/39353442/f-seal-seal-undeclared-even-when-headers-are-included

Thanks,

--Tom

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https://bugzilla.kernel.org/show_bug.cgi?id=156231

Michael Kerrisk <[email protected]> changed:

What |Removed |Added
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CC| |[email protected]

--- Comment #1 from Michael Kerrisk <[email protected]> --- The problem is that the glibc headers have not yet imported these definitions, so we're currently in "no man's land".

Cheers,

Michael

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