[CIFS] Support for CIFS ACLs (part 1)
Add code to be able to dump CIFS ACL information when Query Posix ACL with cifsacl mount parm enabled. Signed-off-by: Shirish Pargoankar <shirishp@us.ibm.com> Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Steve French
parent
2224f4e5d5
commit
442aa310f3
@ -22,12 +22,42 @@
|
||||
#ifndef _CIFSACL_H
|
||||
#define _CIFSACL_H
|
||||
|
||||
struct cifs_ntsd {
|
||||
__u16 revision; /* revision level */
|
||||
__u16 type;
|
||||
__u32 osidoffset;
|
||||
__u32 gsidoffset;
|
||||
__u32 sacloffset;
|
||||
__u32 dacloffset;
|
||||
} __attribute__((packed));
|
||||
|
||||
struct cifs_sid {
|
||||
__u8 revision; /* revision level */
|
||||
__u8 num_subauths;
|
||||
__u8 num_auth;
|
||||
__u8 authority[6];
|
||||
__u32 sub_auth[4];
|
||||
/* next sub_auth if any ... */
|
||||
__u32 rid;
|
||||
} __attribute__((packed));
|
||||
|
||||
struct cifs_acl {
|
||||
__u16 revision; /* revision level */
|
||||
__u16 size;
|
||||
__u32 num_aces;
|
||||
} __attribute__((packed));
|
||||
|
||||
struct cifs_ntace {
|
||||
__u8 type;
|
||||
__u8 flags;
|
||||
__u16 size;
|
||||
__u32 access_req;
|
||||
} __attribute__((packed));
|
||||
|
||||
struct cifs_ace {
|
||||
__u8 revision; /* revision level */
|
||||
__u8 num_auth;
|
||||
__u8 authority[6];
|
||||
__u32 sub_auth[4];
|
||||
__u32 rid;
|
||||
} __attribute__((packed));
|
||||
|
||||
/* everyone */
|
||||
|
||||
@ -19,6 +19,7 @@
|
||||
#include <linux/in.h>
|
||||
#include <linux/in6.h>
|
||||
#include "cifs_fs_sb.h"
|
||||
#include "cifsacl.h"
|
||||
/*
|
||||
* The sizes of various internal tables and strings
|
||||
*/
|
||||
@ -115,6 +116,17 @@ struct mac_key {
|
||||
} data;
|
||||
};
|
||||
|
||||
struct cifs_cred {
|
||||
int uid;
|
||||
int gid;
|
||||
int mode;
|
||||
int cecount;
|
||||
struct cifs_sid osid;
|
||||
struct cifs_sid gsid;
|
||||
struct cifs_ntace *ntaces;
|
||||
struct cifs_ace *aces;
|
||||
};
|
||||
|
||||
/*
|
||||
*****************************************************************
|
||||
* Except the CIFS PDUs themselves all the
|
||||
|
||||
@ -3048,17 +3048,110 @@ static const struct cifs_sid sid_everyone =
|
||||
static const struct cifs_sid sid_user =
|
||||
{1, 2 , {0, 0, 0, 0, 0, 5}, {32, 545, 0, 0}};
|
||||
|
||||
/* Convert CIFS ACL to POSIX form */
|
||||
static int parse_sec_desc(struct cifs_sid *psec_desc, int acl_len)
|
||||
static void parse_sid(struct cifs_sid * psid, char * end_of_acl)
|
||||
{
|
||||
return 0;
|
||||
/* BB need to add parm so we can store the SID BB */
|
||||
|
||||
/* validate that we do not go past end of acl */
|
||||
if (end_of_acl < (char *)psid + sizeof(struct cifs_sid)) {
|
||||
cERROR(1, ("ACL to small to parse SID"));
|
||||
return;
|
||||
}
|
||||
#ifdef CONFIG_CIFS_DEBUG2
|
||||
cFYI(1, ("revision %d num_auth %d First subauth 0x%x",
|
||||
psid->revision, psid->num_auth, psid->sub_auth[0]));
|
||||
|
||||
/* BB add length check to make sure that we do not have huge num auths
|
||||
and therefore go off the end */
|
||||
cFYI(1, ("RID 0x%x", le32_to_cpu(psid->sub_auth[psid->num_auth])));
|
||||
#endif
|
||||
return;
|
||||
}
|
||||
|
||||
/* Convert CIFS ACL to POSIX form */
|
||||
static int parse_sec_desc(struct cifs_ntsd *pntsd, int acl_len)
|
||||
{
|
||||
int i;
|
||||
int num_aces = 0;
|
||||
int acl_size;
|
||||
struct cifs_sid *owner_sid_ptr, *group_sid_ptr;
|
||||
struct cifs_acl *dacl_ptr; /* no need for SACL ptr */
|
||||
struct cifs_ntace **ppntace;
|
||||
struct cifs_ace **ppace;
|
||||
char *acl_base;
|
||||
char *end_of_acl = ((char *)pntsd) + acl_len;
|
||||
|
||||
owner_sid_ptr = (struct cifs_sid *)((char *)pntsd +
|
||||
cpu_to_le32(pntsd->osidoffset));
|
||||
group_sid_ptr = (struct cifs_sid *)((char *)pntsd +
|
||||
cpu_to_le32(pntsd->gsidoffset));
|
||||
dacl_ptr = (struct cifs_acl *)((char *)pntsd +
|
||||
cpu_to_le32(pntsd->dacloffset));
|
||||
#ifdef CONFIG_CIFS_DEBUG2
|
||||
cFYI(1,("revision %d type 0x%x ooffset 0x%x goffset 0x%x "
|
||||
"sacloffset 0x%x dacloffset 0x%x", pntsd->revision, pntsd->type,
|
||||
pntsd->osidoffset, pntsd->gsidoffset, pntsd->sacloffset,
|
||||
pntsd->dacloffset));
|
||||
#endif
|
||||
parse_sid(owner_sid_ptr, end_of_acl);
|
||||
parse_sid(group_sid_ptr, end_of_acl);
|
||||
|
||||
/* cifscred->uid = owner_sid_ptr->rid;
|
||||
cifscred->gid = group_sid_ptr->rid;
|
||||
memcpy((void *)(&(cifscred->osid)), (void *)owner_sid_ptr,
|
||||
sizeof (struct cifs_sid));
|
||||
memcpy((void *)(&(cifscred->gsid)), (void *)group_sid_ptr,
|
||||
sizeof (struct cifs_sid)); */
|
||||
|
||||
num_aces = cpu_to_le32(dacl_ptr->num_aces);
|
||||
cFYI(1, ("num aces %d", num_aces));
|
||||
if (num_aces > 0) {
|
||||
ppntace = kmalloc(num_aces * sizeof(struct cifs_ntace *),
|
||||
GFP_KERNEL);
|
||||
ppace = kmalloc(num_aces * sizeof(struct cifs_ace *),
|
||||
GFP_KERNEL);
|
||||
|
||||
/* cifscred->cecount = dacl_ptr->num_aces;
|
||||
cifscred->ntaces = kmalloc(num_aces *
|
||||
sizeof(struct cifs_ntace *), GFP_KERNEL);
|
||||
cifscred->aces = kmalloc(num_aces *
|
||||
sizeof(struct cifs_ace *), GFP_KERNEL);*/
|
||||
|
||||
acl_base = (char *)dacl_ptr;
|
||||
acl_size = sizeof(struct cifs_acl);
|
||||
|
||||
for (i = 0; i < num_aces; ++i) {
|
||||
ppntace[i] = (struct cifs_ntace *)
|
||||
(acl_base + acl_size);
|
||||
ppace[i] = (struct cifs_ace *)
|
||||
((char *)ppntace[i] +
|
||||
sizeof(struct cifs_ntace));
|
||||
|
||||
/* memcpy((void *)(&(cifscred->ntaces[i])),
|
||||
(void *)ntace_ptrptr[i],
|
||||
sizeof(struct cifs_ntace));
|
||||
memcpy((void *)(&(cifscred->aces[i])),
|
||||
(void *)ace_ptrptr[i],
|
||||
sizeof(struct cifs_ace)); */
|
||||
|
||||
acl_base = (char *)ppntace[i];
|
||||
acl_size = cpu_to_le32(ppntace[i]->size);
|
||||
#ifdef CONFIG_CIFS_DEBUG2
|
||||
cFYI(1, ("ACE revision:%d", ppace[i]->revision));
|
||||
}
|
||||
#endif
|
||||
kfree(ppace);
|
||||
kfree(ppntace);
|
||||
}
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
/* Get Security Descriptor (by handle) from remote server for a file or dir */
|
||||
int
|
||||
CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid,
|
||||
/* BB fix up return info */ char *acl_inf, const int buflen,
|
||||
const int acl_type /* ACCESS/DEFAULT not sure implication */)
|
||||
const int acl_type)
|
||||
{
|
||||
int rc = 0;
|
||||
int buf_type = 0;
|
||||
@ -3088,7 +3181,7 @@ CIFSSMBGetCIFSACL(const int xid, struct cifsTconInfo *tcon, __u16 fid,
|
||||
if (rc) {
|
||||
cFYI(1, ("Send error in QuerySecDesc = %d", rc));
|
||||
} else { /* decode response */
|
||||
struct cifs_sid *psec_desc;
|
||||
struct cifs_ntsd *psec_desc;
|
||||
__le32 * parm;
|
||||
int parm_len;
|
||||
int data_len;
|
||||
|
||||
@ -1742,9 +1742,9 @@ void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon,
|
||||
cFYI(1, ("very large write cap"));
|
||||
#endif /* CIFS_DEBUG2 */
|
||||
if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) {
|
||||
if (vol_info == NULL)
|
||||
if (vol_info == NULL) {
|
||||
cFYI(1, ("resetting capabilities failed"));
|
||||
else
|
||||
} else
|
||||
cERROR(1, ("Negotiating Unix capabilities "
|
||||
"with the server failed. Consider "
|
||||
"mounting with the Unix Extensions\n"
|
||||
|
||||
Loading…
Reference in New Issue
Block a user