diff options
| -rw-r--r-- | man2/open.2 | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/man2/open.2 b/man2/open.2 index 016c3cf4d2..28b92954f2 100644 --- a/man2/open.2 +++ b/man2/open.2 @@ -244,14 +244,19 @@ If the file does not exist, it will be created. The owner (user ID) of the new file is set to the effective user ID of the process. -The group ownership (group ID) is set either to -the effective group ID of the process or to the group ID of the -parent directory (depending on filesystem type and mount options, -and the mode of the parent directory; see the mount options + +The group ownership (group ID) of the new file is set either to +the effective group ID of the process (System V semantics) +or to the group ID of the parent directory (BSD semantics). +On Linux, the behavior depends on whether the +set-group-ID mode bit is set on the parent directory: +if that bit is set, then BSD semantics apply; +otherwise, System V semantics apply. +For some filesystems, the behavior also depends on the .I bsdgroups and .I sysvgroups -described in +mount options described in .BR mount (8)). .\" As at 2.6.25, bsdgroups is supported by ext2, ext3, ext4, and .\" XFS (since 2.6.14). |