summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--lib/libc/sys/open.26
-rw-r--r--lib/libc/sys/read.215
2 files changed, 16 insertions, 5 deletions
diff --git a/lib/libc/sys/open.2 b/lib/libc/sys/open.2
index c3fc4d8..1fb2945 100644
--- a/lib/libc/sys/open.2
+++ b/lib/libc/sys/open.2
@@ -245,6 +245,9 @@ operation was interrupted by a signal.
or
.Dv O_EXLOCK
is specified but the underlying file system does not support locking.
+.It Bq Er EOPNOTSUPP
+The named file is a special file mounted through a filesystem that
+does not support access to it (e.g. NFS).
.It Bq Er EWOULDBLOCK
.Dv O_NONBLOCK
and one of
@@ -316,7 +319,8 @@ and
.Xr lseek 2 ,
.Xr read 2 ,
.Xr umask 2 ,
-.Xr write 2
+.Xr write 2 ,
+.Xr fopen 3
.Sh HISTORY
The
.Fn open
diff --git a/lib/libc/sys/read.2 b/lib/libc/sys/read.2
index badf49f..3cb0223 100644
--- a/lib/libc/sys/read.2
+++ b/lib/libc/sys/read.2
@@ -163,9 +163,13 @@ was negative.
.It Bq Er EAGAIN
The file was marked for non-blocking I/O,
and no data were ready to be read.
-.It Bq Er EPERM
-The file descriptor is associated with a non regular file
-(e.g. a directory) mounted over NFS.
+.It Bq Er EISDIR
+The file descriptor is associated with a directory residing
+on a filesystem that does not allow regular read operations on
+directories (e.g. NFS).
+.It Bq Er EOPNOTSUPP
+The file descriptor is associated with a filesystem and file type that
+do not allow regular read operations on it.
.El
.Pp
In addition,
@@ -207,11 +211,14 @@ The file descriptor is associated with a pipe, socket, or FIFO.
.Sh SEE ALSO
.Xr dup 2 ,
.Xr fcntl 2 ,
+.Xr getdirentries 2 ,
.Xr open 2 ,
.Xr pipe 2 ,
.Xr select 2 ,
.Xr socket 2 ,
-.Xr socketpair 2
+.Xr socketpair 2 ,
+.Xr fread 3 ,
+.Xr readdir 3
.Sh STANDARDS
The
.Fn read
OpenPOWER on IntegriCloud