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-rw-r--r--lib/libc/sys/open.27
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/libc/sys/open.2 b/lib/libc/sys/open.2
index 11d2906..7343528 100644
--- a/lib/libc/sys/open.2
+++ b/lib/libc/sys/open.2
@@ -268,6 +268,13 @@ and
were specified and the file exists.
.It Bq Er EOPNOTSUPP
An attempt was made to open a socket (not currently implemented).
+.It Bq Er EINVAL
+An attempt was made to open a descriptor with an illegal combination
+of
+.Dv O_RDONLY ,
+.Dv O_WRONLY ,
+and
+.Dv O_RDWR .
.El
.Sh SEE ALSO
.Xr chmod 2 ,
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