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Diffstat (limited to 'man7/unix.7')
| -rw-r--r-- | man7/unix.7 | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/man7/unix.7 b/man7/unix.7 index f03e7bd120..17a10d3db0 100644 --- a/man7/unix.7 +++ b/man7/unix.7 @@ -381,6 +381,12 @@ Semantically, this operation is equivalent to duplicating .RB ( dup (2)) a file descriptor into the file descriptor table of another process. .IP +If the buffer used to receive the ancillary data containing +file descriptors is too small (or is absent), +then the ancillary data is truncated (or discarded) +and the excess file descriptors are automatically closed +in the receiving process. +.IP The kernel constant .BR SCM_MAX_FD defines a limit on the number of file descriptors in the array. |