| 1 | Depends-On-Patch: acls.diff |
| 2 | |
| 3 | Philip Lowman wrote: |
| 4 | > Attached is a small patch which is meant to be applied to a copy of |
| 5 | > rsync which has already been patched with acl support (the acls.diff |
| 6 | > file in the patches folder). It allows the preservation of the delete, |
| 7 | > chmod, and chown bits which Adaptec has added to XFS on their SnapOS NAS |
| 8 | > units. This is nice for backing up files between different NAS units |
| 9 | > and preserving all of the Samba ACLs. |
| 10 | > |
| 11 | > I'm not sure how useful this patch will be because I'm not sure if any |
| 12 | > other NAS vendors have standardized on their extensions to POSIX ACLs to |
| 13 | > support Samba in the same manner that Adaptec has. FWIW, though, this |
| 14 | > will allow you to preserve acls when copying between different Adaptec |
| 15 | > based NAS units running SnapOS. |
| 16 | |
| 17 | I (Wayne) tweaked the patch for style and to avoid using SMB_* constants |
| 18 | with literal values were needed. |
| 19 | |
| 20 | --- old/acls.c |
| 21 | +++ new/acls.c |
| 22 | @@ -146,6 +146,9 @@ static BOOL unpack_smb_acl(rsync_acl *ra |
| 23 | } |
| 24 | race->access = (sys_acl_get_perm(permset, SMB_ACL_READ) ? 4 : 0) |
| 25 | | (sys_acl_get_perm(permset, SMB_ACL_WRITE) ? 2 : 0) |
| 26 | + | (sys_acl_get_perm(permset, SMB_ACL_DELETE) ? 8 : 0) |
| 27 | + | (sys_acl_get_perm(permset, SMB_ACL_CHMOD) ? 16 : 0) |
| 28 | + | (sys_acl_get_perm(permset, SMB_ACL_CHOWN) ? 32 : 0) |
| 29 | | (sys_acl_get_perm(permset, SMB_ACL_EXECUTE) ? 1 : 0); |
| 30 | switch (race->tag_type) { |
| 31 | case SMB_ACL_USER: |
| 32 | @@ -575,6 +578,21 @@ static BOOL pack_smb_acl(SMB_ACL_T *smb_ |
| 33 | errfun = "sys_acl_add_perm"; |
| 34 | break; |
| 35 | } |
| 36 | + if (race->access & 8) |
| 37 | + if (sys_acl_add_perm(permset, SMB_ACL_DELETE)) { |
| 38 | + errfun = "sys_acl_add_perm"; |
| 39 | + break; |
| 40 | + } |
| 41 | + if (race->access & 16) |
| 42 | + if (sys_acl_add_perm(permset, SMB_ACL_CHMOD)) { |
| 43 | + errfun = "sys_acl_add_perm"; |
| 44 | + break; |
| 45 | + } |
| 46 | + if (race->access & 32) |
| 47 | + if (sys_acl_add_perm(permset, SMB_ACL_CHOWN)) { |
| 48 | + errfun = "sys_acl_add_perm"; |
| 49 | + break; |
| 50 | + } |
| 51 | if (sys_acl_set_permset(entry, permset)) { |
| 52 | errfun = "sys_acl_set_permset"; |
| 53 | break; |
| 54 | @@ -634,7 +652,7 @@ static void receive_rsync_acl(rsync_acl |
| 55 | exit_cleanup(RERR_STREAMIO); |
| 56 | } |
| 57 | race->access = read_byte(f); |
| 58 | - if (race->access & ~ (4 | 2 | 1)) { |
| 59 | + if (race->access & ~(32 | 16 | 8 | 4 | 2 | 1)) { |
| 60 | rprintf(FERROR, "receive_rsync_acl: bogus permset %o\n", |
| 61 | race->access); |
| 62 | exit_cleanup(RERR_STREAMIO); |
| 63 | --- old/smb_acls.h |
| 64 | +++ new/smb_acls.h |
| 65 | @@ -33,6 +33,11 @@ |
| 66 | #define SMB_ACL_READ ACL_READ |
| 67 | #define SMB_ACL_WRITE ACL_WRITE |
| 68 | #define SMB_ACL_EXECUTE ACL_EXECUTE |
| 69 | +/* These are custom ACL bits used by Adaptec's modifications |
| 70 | + * to XFS on their SnapOS units. */ |
| 71 | +#define SMB_ACL_DELETE 0x08 |
| 72 | +#define SMB_ACL_CHMOD 0x10 |
| 73 | +#define SMB_ACL_CHOWN 0x20 |
| 74 | |
| 75 | /* Types of ACLs. */ |
| 76 | #define SMB_ACL_USER ACL_USER |