When a call to fcntl(2) for the purpose of adding file locks fails
with an error other than EAGAIN or EACCES, report the error returned
by fcntl.
EAGAIN or EACCES are elided as they are considered to be common
failures, indicating that a conflicting lock is held by another
process.
No errors are elided when removing file locks.
Signed-off-by: David Edmondson <david.edmondson@oracle.com>
---
v3:
- Remove the now unnecessary updates to the test framework (Max).
- Elide the error detail for EAGAIN or EACCES when locking (Kevin,
sort-of Max).
- Philippe and Vladimir sent Reviewed-by, but things have changed
noticeably, so I didn't add them (dme).
v4:
- Really, really remove the unnecessary updates to the test framework.
v5:
- Use a macro to avoid duplicating the EAGAIN/EACCES suppression
(Vladimir).
- Fix "lock" -> "unlock" (Vladimir).
- Comment on not eliding errors for the unlock case (Vladimir).