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-rw-r--r--lib/libutil/pidfile.34
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/libutil/pidfile.3 b/lib/libutil/pidfile.3
index 64f77b0..3eaa7cf 100644
--- a/lib/libutil/pidfile.3
+++ b/lib/libutil/pidfile.3
@@ -168,6 +168,10 @@ Specified pidfile's name is too long.
.It Bq Er EINVAL
Some process already holds the lock on the given pidfile, but PID read
from there is invalid.
+.It Bq Er EAGAIN
+Some process already holds the lock on the given pidfile, but the file
+is truncated. Most likely, the existing daemon is writing new PID into
+the file.
.El
.Pp
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