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-rw-r--r--fs/cifs/cifsacl.c29
1 files changed, 17 insertions, 12 deletions
diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c
index f93932c21772..1cb5b0a9f2ac 100644
--- a/fs/cifs/cifsacl.c
+++ b/fs/cifs/cifsacl.c
@@ -1,7 +1,7 @@
1/* 1/*
2 * fs/cifs/cifsacl.c 2 * fs/cifs/cifsacl.c
3 * 3 *
4 * Copyright (C) International Business Machines Corp., 2007 4 * Copyright (C) International Business Machines Corp., 2007,2008
5 * Author(s): Steve French (sfrench@us.ibm.com) 5 * Author(s): Steve French (sfrench@us.ibm.com)
6 * 6 *
7 * Contains the routines for mapping CIFS/NTFS ACLs 7 * Contains the routines for mapping CIFS/NTFS ACLs
@@ -261,7 +261,7 @@ static void mode_to_access_flags(umode_t mode, umode_t bits_to_use,
261 return; 261 return;
262} 262}
263 263
264static __le16 fill_ace_for_sid(struct cifs_ace *pntace, 264static __u16 fill_ace_for_sid(struct cifs_ace *pntace,
265 const struct cifs_sid *psid, __u64 nmode, umode_t bits) 265 const struct cifs_sid *psid, __u64 nmode, umode_t bits)
266{ 266{
267 int i; 267 int i;
@@ -411,7 +411,7 @@ static void parse_dacl(struct cifs_acl *pdacl, char *end_of_acl,
411static int set_chmod_dacl(struct cifs_acl *pndacl, struct cifs_sid *pownersid, 411static int set_chmod_dacl(struct cifs_acl *pndacl, struct cifs_sid *pownersid,
412 struct cifs_sid *pgrpsid, __u64 nmode) 412 struct cifs_sid *pgrpsid, __u64 nmode)
413{ 413{
414 __le16 size = 0; 414 u16 size = 0;
415 struct cifs_acl *pnndacl; 415 struct cifs_acl *pnndacl;
416 416
417 pnndacl = (struct cifs_acl *)((char *)pndacl + sizeof(struct cifs_acl)); 417 pnndacl = (struct cifs_acl *)((char *)pndacl + sizeof(struct cifs_acl));
@@ -556,9 +556,9 @@ static int build_sec_desc(struct cifs_ntsd *pntsd, struct cifs_ntsd *pnntsd,
556 556
557/* Retrieve an ACL from the server */ 557/* Retrieve an ACL from the server */
558static struct cifs_ntsd *get_cifs_acl(u32 *pacllen, struct inode *inode, 558static struct cifs_ntsd *get_cifs_acl(u32 *pacllen, struct inode *inode,
559 const char *path) 559 const char *path, const __u16 *pfid)
560{ 560{
561 struct cifsFileInfo *open_file; 561 struct cifsFileInfo *open_file = NULL;
562 int unlock_file = FALSE; 562 int unlock_file = FALSE;
563 int xid; 563 int xid;
564 int rc = -EIO; 564 int rc = -EIO;
@@ -573,7 +573,11 @@ static struct cifs_ntsd *get_cifs_acl(u32 *pacllen, struct inode *inode,
573 return NULL; 573 return NULL;
574 574
575 xid = GetXid(); 575 xid = GetXid();
576 open_file = find_readable_file(CIFS_I(inode)); 576 if (pfid == NULL)
577 open_file = find_readable_file(CIFS_I(inode));
578 else
579 fid = *pfid;
580
577 sb = inode->i_sb; 581 sb = inode->i_sb;
578 if (sb == NULL) { 582 if (sb == NULL) {
579 FreeXid(xid); 583 FreeXid(xid);
@@ -584,7 +588,7 @@ static struct cifs_ntsd *get_cifs_acl(u32 *pacllen, struct inode *inode,
584 if (open_file) { 588 if (open_file) {
585 unlock_file = TRUE; 589 unlock_file = TRUE;
586 fid = open_file->netfid; 590 fid = open_file->netfid;
587 } else { 591 } else if (pfid == NULL) {
588 int oplock = FALSE; 592 int oplock = FALSE;
589 /* open file */ 593 /* open file */
590 rc = CIFSSMBOpen(xid, cifs_sb->tcon, path, FILE_OPEN, 594 rc = CIFSSMBOpen(xid, cifs_sb->tcon, path, FILE_OPEN,
@@ -600,10 +604,11 @@ static struct cifs_ntsd *get_cifs_acl(u32 *pacllen, struct inode *inode,
600 604
601 rc = CIFSSMBGetCIFSACL(xid, cifs_sb->tcon, fid, &pntsd, pacllen); 605 rc = CIFSSMBGetCIFSACL(xid, cifs_sb->tcon, fid, &pntsd, pacllen);
602 cFYI(1, ("GetCIFSACL rc = %d ACL len %d", rc, *pacllen)); 606 cFYI(1, ("GetCIFSACL rc = %d ACL len %d", rc, *pacllen));
603 if (unlock_file == TRUE) 607 if (unlock_file == TRUE) /* find_readable_file increments ref count */
604 atomic_dec(&open_file->wrtPending); 608 atomic_dec(&open_file->wrtPending);
605 else 609 else if (pfid == NULL) /* if opened above we have to close the handle */
606 CIFSSMBClose(xid, cifs_sb->tcon, fid); 610 CIFSSMBClose(xid, cifs_sb->tcon, fid);
611 /* else handle was passed in by caller */
607 612
608 FreeXid(xid); 613 FreeXid(xid);
609 return pntsd; 614 return pntsd;
@@ -664,14 +669,14 @@ static int set_cifs_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
664} 669}
665 670
666/* Translate the CIFS ACL (simlar to NTFS ACL) for a file into mode bits */ 671/* Translate the CIFS ACL (simlar to NTFS ACL) for a file into mode bits */
667void acl_to_uid_mode(struct inode *inode, const char *path) 672void acl_to_uid_mode(struct inode *inode, const char *path, const __u16 *pfid)
668{ 673{
669 struct cifs_ntsd *pntsd = NULL; 674 struct cifs_ntsd *pntsd = NULL;
670 u32 acllen = 0; 675 u32 acllen = 0;
671 int rc = 0; 676 int rc = 0;
672 677
673 cFYI(DBG2, ("converting ACL to mode for %s", path)); 678 cFYI(DBG2, ("converting ACL to mode for %s", path));
674 pntsd = get_cifs_acl(&acllen, inode, path); 679 pntsd = get_cifs_acl(&acllen, inode, path, pfid);
675 680
676 /* if we can retrieve the ACL, now parse Access Control Entries, ACEs */ 681 /* if we can retrieve the ACL, now parse Access Control Entries, ACEs */
677 if (pntsd) 682 if (pntsd)
@@ -694,7 +699,7 @@ int mode_to_acl(struct inode *inode, const char *path, __u64 nmode)
694 cFYI(DBG2, ("set ACL from mode for %s", path)); 699 cFYI(DBG2, ("set ACL from mode for %s", path));
695 700
696 /* Get the security descriptor */ 701 /* Get the security descriptor */
697 pntsd = get_cifs_acl(&acllen, inode, path); 702 pntsd = get_cifs_acl(&acllen, inode, path, NULL);
698 703
699 /* Add three ACEs for owner, group, everyone getting rid of 704 /* Add three ACEs for owner, group, everyone getting rid of
700 other ACEs as chmod disables ACEs and set the security descriptor */ 705 other ACEs as chmod disables ACEs and set the security descriptor */