1af760ce1b
/dev/zfs always has per-open data, so when it is missing the file descriptor is for some other file. Returning ENOENT in this case is confusing as a variety of other conditions (like a missing dataset) may result in the same error. It's better to consistently return EBADF for any problems with the file descriptor. Note that zfs_onexit_fd_hold() is used with 'automatic cleanup fd' - when that fd is closed, typically because a process is terminated, some cleanup action is taken by ZFS driver. E.g. a temporary snapshot hold is released. Perhaps, it would even be worthwhile changing devfs_get_cdevpriv() to return EBADF if there is no associated data. Differential Revision: https://reviews.freebsd.org/D2370 Reviewed by: delphij, smh MFC after: 12 days |
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