diff options
| -rw-r--r-- | lib/libc/sys/mmap.2 | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/libc/sys/mmap.2 b/lib/libc/sys/mmap.2 index f7fd62dd4efd..8d6cfd76dfe7 100644 --- a/lib/libc/sys/mmap.2 +++ b/lib/libc/sys/mmap.2 @@ -363,3 +363,10 @@ the file system code that causes the limit to be further restricted to .Pp Another reason for the 2GB limit is that file system metadata can reside at negative offsets. +.Pp +Note that an attempt to +.Fn mmap +zero bytes has no effect and succeeds, while an attempt to +.Fn munmap +zero bytes will return +.Bq Er EINVAL . |