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[CIFS] acl support part 4

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Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Steve French 2007-10-17 22:50:39 +00:00
parent d5d1850109
commit a750e77c21
3 changed files with 25 additions and 9 deletions
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19
fs/cifs/cifsacl.c
View file

@ -95,23 +95,24 @@ int match_sid(struct cifs_sid *ctsid)
return (-1);
}
/* if the two SIDs (roughly equivalent to a UUID for a user or group) are
the same returns 1, if they do not match returns 0 */
int compare_sids(struct cifs_sid *ctsid, struct cifs_sid *cwsid)
{
int i;
int num_subauth, num_sat, num_saw;
if ((!ctsid) || (!cwsid))
return (-1);
return (0);
/* compare the revision */
if (ctsid->revision != cwsid->revision)
return (-1);
return (0);
/* compare all of the six auth values */
for (i = 0; i < 6; ++i) {
if (ctsid->authority[i] != cwsid->authority[i])
return (-1);
return (0);
}
/* compare all of the subauth values if any */
@ -121,11 +122,11 @@ int compare_sids(struct cifs_sid *ctsid, struct cifs_sid *cwsid)
if (num_subauth) {
for (i = 0; i < num_subauth; ++i) {
if (ctsid->sub_auth[i] != cwsid->sub_auth[i])
return (-1);
return (0);
}
}
return (0); /* sids compare/match */
return (1); /* sids compare/match */
}
@ -180,7 +181,8 @@ static void parse_ntace(struct cifs_ntace *pntace, char *end_of_acl)
static void parse_dacl(struct cifs_acl *pdacl, char *end_of_acl)
static void parse_dacl(struct cifs_acl *pdacl, char *end_of_acl,
struct cifs_sid *pownersid, struct cifs_sid pgrpsid)
{
int i;
int num_aces = 0;
@ -219,7 +221,6 @@ static void parse_dacl(struct cifs_acl *pdacl, char *end_of_acl)
cifscred->aces = kmalloc(num_aces *
sizeof(struct cifs_ace *), GFP_KERNEL);*/
for (i = 0; i < num_aces; ++i) {
ppntace[i] = (struct cifs_ntace *)
(acl_base + acl_size);
@ -317,7 +318,7 @@ int parse_sec_desc(struct cifs_ntsd *pntsd, int acl_len)
if (rc)
return rc;
parse_dacl(dacl_ptr, end_of_acl);
parse_dacl(dacl_ptr, end_of_acl, owner_sid_ptr, group_sid_ptr);
/* cifscred->uid = owner_sid_ptr->rid;
cifscred->gid = group_sid_ptr->rid;

9
fs/cifs/cifsacl.h
View file

@ -23,9 +23,18 @@
#define _CIFSACL_H
#define NUM_AUTHS 6 /* number of authority fields */
#define NUM_SUBAUTHS 5 /* number of sub authority fields */
#define NUM_WK_SIDS 7 /* number of well known sids */
#define SIDNAMELENGTH 20 /* long enough for the ones we care about */
#define READ_BIT 0x4
#define WRITE_BIT 0x2
#define EXEC_BIT 0x1
#define UBITSHIFT 6
#define GBITSHIFT 3
struct cifs_ntsd {
__le16 revision; /* revision level */
__le16 type;

6
fs/cifs/cifspdu.h
View file

@ -215,6 +215,12 @@
/* file_execute, file_read_attributes*/
/* write_dac, and delete. */
#define FILE_READ_RIGHTS (FILE_READ_DATA | FILE_READ_EA | FILE_READ_ATTRIBUTES)
#define FILE_WRITE_RIGHTS (FILE_WRITE_DATA | FILE_APPEND_DATA \
| FILE_WRITE_EA | FILE_WRITE_ATTRIBUTES)
#define FILE_EXEC_RIGHTS (FILE_EXECUTE)
/*
* Invalid readdir handle
*/