diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/tail.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/tail.c b/src/tail.c index 082ddfc52..7d8f421e6 100644 --- a/src/tail.c +++ b/src/tail.c @@ -1640,10 +1640,15 @@ main (int argc, char **argv) if (forever && getenv ("POSIXLY_CORRECT")) { - int is_a_pipe = isapipe (STDIN_FILENO); - if (is_a_pipe < 0) + struct stat st; + int is_a_fifo_or_pipe = + (fstat (STDIN_FILENO, &st) != 0 ? -1 + : S_ISFIFO (st.st_mode) ? 1 + : HAVE_FIFO_PIPES == 1 ? 0 + : isapipe (STDIN_FILENO)); + if (is_a_fifo_or_pipe < 0) error (EXIT_FAILURE, errno, _("standard input")); - if (is_a_pipe) + if (is_a_fifo_or_pipe) forever = false; } } |