RHEL6: 32-bits compatibility for ioctl BLKSSZGET, returns EINVAL ("Invalid argument") instead of ENOTTY ("Inappropriate ioctl for device")
Issue
On RHEL6, an application compiled for 32-bits on a 64-bit system using the BLKSSZGET ioctl returns an invalid error code when the device argument is a normal file instead of a block device.
On RHEL6, the errno returned is EINVAL == 22 ("Invalid argument") when it should be ENOTTY == 25 ("Inappropriate ioctl for device").
In addition to the invalid errno, a misleading log message is generated.
This problem does not occur on RHEL5 or on RHEL6 in 64-bit mode.
Environment
- Red Hat Enterprise Linux (RHEL) 6
- program compiled for 32-bit on 64-bit system using BLKSSZGET or similar ioctl
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