Hi Linus,
This patch provides the configuration entry, help text and basic
header file definitions for filesystems that support POSIX ACLs.
cheers.
--
Nathan
fs/Config.help | 8 ++++
fs/Config.in | 3 +
include/linux/posix_acl_xattr.h | 67 ++++++++++++++++++++++++++++++++++++++++
3 files changed, 78 insertions(+)
diff -Naur linux-2.5.42-pristine/fs/Config.help linux-2.5.42-posixacl/fs/Config.help
--- linux-2.5.42-pristine/fs/Config.help Sat Oct 12 14:22:18 2002
+++ linux-2.5.42-posixacl/fs/Config.help Sun Oct 13 11:04:30 2002
@@ -18,6 +18,14 @@
need this functionality say Y here. Note that you will need latest
quota utilities for new quota format with this kernel.
+CONFIG_FS_POSIX_ACL
+ POSIX Access Control Lists (ACLs) support permissions for users and
+ groups beyond the owner/group/world scheme.
+
+ Refer to <http://acl.bestbits.at/> for more information about POSIX
+ ACLs on Linux. If you wish to use ACLs, you'll need the getfacl(1)
+ and setfacl(1) utilities. If unsure, say N.
+
CONFIG_MINIX_FS
Minix is a simple operating system used in many classes about OS's.
The minix file system (method to organize files on a hard disk
diff -Naur linux-2.5.42-pristine/fs/Config.in linux-2.5.42-posixacl/fs/Config.in
--- linux-2.5.42-pristine/fs/Config.in Sat Oct 12 14:22:12 2002
+++ linux-2.5.42-posixacl/fs/Config.in Sun Oct 13 11:04:30 2002
@@ -10,6 +10,9 @@
if [ "$CONFIG_QUOTA" = "y" ]; then
define_bool CONFIG_QUOTACTL y
fi
+
+bool 'POSIX Access Control Lists' CONFIG_FS_POSIX_ACL
+
tristate 'Kernel automounter support' CONFIG_AUTOFS_FS
tristate 'Kernel automounter version 4 support (also supports v3)' CONFIG_AUTOFS4_FS
diff -Naur linux-2.5.42-pristine/include/linux/posix_acl_xattr.h linux-2.5.42-posixacl/include/linux/posix_acl_xattr.h
--- linux-2.5.42-pristine/include/linux/posix_acl_xattr.h Thu Jan 1 10:00:00 1970
+++ linux-2.5.42-posixacl/include/linux/posix_acl_xattr.h Sun Oct 13 11:04:30 2002
@@ -0,0 +1,67 @@
+/*
+ File: linux/posix_acl_xattr.h
+
+ Extended attribute system call representation of Access Control Lists.
+
+ Copyright (C) 2000 by Andreas Gruenbacher <[email protected]>
+ Copyright (C) 2002 SGI - Silicon Graphics, Inc <[email protected]>
+ */
+#ifndef _POSIX_ACL_XATTR_H
+#define _POSIX_ACL_XATTR_H
+
+/* Extended attribute names */
+#define POSIX_ACL_XATTR_ACCESS "system.posix_acl_access"
+#define POSIX_ACL_XATTR_DEFAULT "system.posix_acl_default"
+
+/* Supported ACL a_version fields */
+#define POSIX_ACL_XATTR_VERSION 0x0002
+
+
+/* An undefined entry e_id value */
+#define ACL_UNDEFINED_ID (-1)
+
+/* ACL entry e_tag field values */
+#define ACL_USER_OBJ (0x01)
+#define ACL_USER (0x02)
+#define ACL_GROUP_OBJ (0x04)
+#define ACL_GROUP (0x08)
+#define ACL_MASK (0x10)
+#define ACL_OTHER (0x20)
+
+/* ACL entry e_perm bitfield values */
+#define ACL_READ (0x04)
+#define ACL_WRITE (0x02)
+#define ACL_EXECUTE (0x01)
+
+
+typedef struct {
+ __u16 e_tag;
+ __u16 e_perm;
+ __u32 e_id;
+} posix_acl_xattr_entry;
+
+typedef struct {
+ __u32 a_version;
+ posix_acl_xattr_entry a_entries[0];
+} posix_acl_xattr_header;
+
+
+static inline size_t
+posix_acl_xattr_size(int count)
+{
+ return (sizeof(posix_acl_xattr_header) +
+ (count * sizeof(posix_acl_xattr_entry)));
+}
+
+static inline int
+posix_acl_xattr_count(size_t size)
+{
+ if (size < sizeof(posix_acl_xattr_header))
+ return -1;
+ size -= sizeof(posix_acl_xattr_header);
+ if (size % sizeof(posix_acl_xattr_entry))
+ return -1;
+ return size / sizeof(posix_acl_xattr_entry);
+}
+
+#endif /* _POSIX_ACL_XATTR_H */
Linus,
Inclusion of these patches would enable me to add POSIX ACL support to
jfs. Please consider accpepting them.
On Saturday 12 October 2002 21:18, Nathan Scott wrote:
> Hi Linus,
>
> This patch provides the configuration entry, help text and basic
> header file definitions for filesystems that support POSIX ACLs.
>
> cheers.
--
David Kleikamp
IBM Linux Technology Center