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bpf.2: Document close-on-exec semantics 

The close-on-exec file descriptor flag is automatically enabled
for FDs returned by bpf().

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2016-02-11 14:48:03 +01:00
parent cf8bac925f
commit 0f166ce187
1 changed files with 6 additions and 0 deletions
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@ -153,6 +153,9 @@ is one of the following:
.TP
.B BPF_MAP_CREATE
Create a map and return a file descriptor that refers to the map.
The close-on-exec file descriptor flag (see
.BR fcntl (2))
is automatically enabled for the new file descriptor.
.TP
.B BPF_MAP_LOOKUP_ELEM
Look up an element by key in a specified map and return its value.
@ -170,6 +173,9 @@ of the next element.
.B BPF_PROG_LOAD
Verify and load an eBPF program,
returning a new file descriptor associated with the program.
The close-on-exec file descriptor flag (see
.BR fcntl (2))
is automatically enabled for the new file descriptor.
.P
The
.I bpf_attr