[RTEMS Project] #4506: posix_devctl() should return the errno directly not -1 and set errno
RTEMS trac
trac at rtems.org
Sat Aug 21 19:25:36 UTC 2021
#4506: posix_devctl() should return the errno directly not -1 and set errno
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Reporter: Joel Sherrill | Owner: (none)
Type: defect | Status: new
Priority: normal | Milestone: 6.1
Component: posix | Version: 6
Severity: normal | Resolution:
Keywords: | Blocked By:
Blocking: |
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Description changed by Joel Sherrill:
Old description:
> The RTEMS implementation posix_devctl() from POSIX 1003.26 does not
> return error codes as required by the standard.
>
> "Upon successful completion, posix_devctl() shall return zero;
> otherwise an error number shall be returned to indicate the error. The
> value returned via the dev_info_ptr argument is driver dependent."
>
> It should return the errno value and not -1 and set the errno variable.
> The current behavior is wrong but understandable because the
> implementation is a wrapper for close() and ioctl() which do set errno
> and return -1.
New description:
The RTEMS implementation of posix_devctl() from POSIX 1003.26 does not
return error codes as required by the standard.
"Upon successful completion, posix_devctl() shall return zero;
otherwise an error number shall be returned to indicate the error. The
value returned via the dev_info_ptr argument is driver dependent."
It should return the errno value and not -1 and set the errno variable.
The current behavior is wrong but understandable because the
implementation is a wrapper for close() and ioctl() which do set errno and
return -1.
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Ticket URL: <http://devel.rtems.org/ticket/4506#comment:1>
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