Hi Linus,
This patch provides the configuration entry, help text and basic
header file definitions for filesystems that support POSIX ACLs.
cheers.
-- Nathanfs/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 <a.gruenbacher@computer.org> + Copyright (C) 2002 SGI - Silicon Graphics, Inc <linux-xfs@oss.sgi.com> + */ +#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 */ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Tue Oct 15 2002 - 22:00:45 EST