diff options
Diffstat (limited to 'lib/libc/gen/popen.3')
| -rw-r--r-- | lib/libc/gen/popen.3 | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/lib/libc/gen/popen.3 b/lib/libc/gen/popen.3 index 600f5d085aad0..c4278e5f3e388 100644 --- a/lib/libc/gen/popen.3 +++ b/lib/libc/gen/popen.3 @@ -53,19 +53,16 @@ function a process by creating a bidirectional pipe forking, and invoking the shell. -Any streams opened by previous -.Fn popen -calls in the parent process are closed in the new child process. Historically, -.Fn popen +.Nm popen was implemented with a unidirectional pipe; hence many implementations of -.Fn popen +.Nm popen only allow the .Fa type argument to specify reading or writing, not both. Since -.Fn popen +.Nm popen is now implemented using a bidirectional pipe, the .Fa type argument may request a bidirectional data flow. |