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Commit 436bb435 authored by Jeff Layton's avatar Jeff Layton Committed by Steve French
Browse files

cifs: make compare_sids static 



..nothing outside of cifsacl.c calls it. Also fix the incorrect
comment on the function. It returns 0 when they match.

Reviewed-by: default avatarShirish Pargaonkar <shirishpargaonkar@gmail.com>
Signed-off-by: default avatarJeff Layton <jlayton@redhat.com>
Signed-off-by: default avatarSteve French <smfrench@gmail.com>
parent 852e2295

fs/cifs/cifsacl.c

+50 −48
Original line number Diff line number Diff line
@@ -224,6 +224,56 @@ sid_to_str(struct cifs_sid *sidptr, char *sidstr) 
	}

}



/*

 * if the two SIDs (roughly equivalent to a UUID for a user or group) are

 * the same returns zero, if they do not match returns non-zero.

 */

static int

compare_sids(const struct cifs_sid *ctsid, const struct cifs_sid *cwsid)

{

	int i;

	int num_subauth, num_sat, num_saw;



	if ((!ctsid) || (!cwsid))

		return 1;



	/* compare the revision */

	if (ctsid->revision != cwsid->revision) {

		if (ctsid->revision > cwsid->revision)

			return 1;

		else

			return -1;

	}



	/* compare all of the six auth values */

	for (i = 0; i < NUM_AUTHS; ++i) {

		if (ctsid->authority[i] != cwsid->authority[i]) {

			if (ctsid->authority[i] > cwsid->authority[i])

				return 1;

			else

				return -1;

		}

	}



	/* compare all of the subauth values if any */

	num_sat = ctsid->num_subauth;

	num_saw = cwsid->num_subauth;

	num_subauth = num_sat < num_saw ? num_sat : num_saw;

	if (num_subauth) {

		for (i = 0; i < num_subauth; ++i) {

			if (ctsid->sub_auth[i] != cwsid->sub_auth[i]) {

				if (le32_to_cpu(ctsid->sub_auth[i]) >

					le32_to_cpu(cwsid->sub_auth[i]))

					return 1;

				else

					return -1;

			}

		}

	}



	return 0; /* sids compare/match */

}



static void

cifs_copy_sid(struct cifs_sid *dst, const struct cifs_sid *src)

{
@@ -630,54 +680,6 @@ cifs_destroy_idmaptrees(void) 
	spin_unlock(&gidsidlock);

}



/* 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(const struct cifs_sid *ctsid, const struct cifs_sid *cwsid)

{

	int i;

	int num_subauth, num_sat, num_saw;



	if ((!ctsid) || (!cwsid))

		return 1;



	/* compare the revision */

	if (ctsid->revision != cwsid->revision) {

		if (ctsid->revision > cwsid->revision)

			return 1;

		else

			return -1;

	}



	/* compare all of the six auth values */

	for (i = 0; i < NUM_AUTHS; ++i) {

		if (ctsid->authority[i] != cwsid->authority[i]) {

			if (ctsid->authority[i] > cwsid->authority[i])

				return 1;

			else

				return -1;

		}

	}



	/* compare all of the subauth values if any */

	num_sat = ctsid->num_subauth;

	num_saw = cwsid->num_subauth;

	num_subauth = num_sat < num_saw ? num_sat : num_saw;

	if (num_subauth) {

		for (i = 0; i < num_subauth; ++i) {

			if (ctsid->sub_auth[i] != cwsid->sub_auth[i]) {

				if (le32_to_cpu(ctsid->sub_auth[i]) >

					le32_to_cpu(cwsid->sub_auth[i]))

					return 1;

				else

					return -1;

			}

		}

	}



	return 0; /* sids compare/match */

}





/* copy ntsd, owner sid, and group sid from a security descriptor to another */

static void copy_sec_desc(const struct cifs_ntsd *pntsd,

				struct cifs_ntsd *pnntsd, __u32 sidsoffset)

fs/cifs/cifsacl.h

+0 −2
Original line number Diff line number Diff line
@@ -98,6 +98,4 @@ extern struct key_type cifs_idmap_key_type; 
extern const struct cred *root_cred;

#endif /* KERNEL */



extern int compare_sids(const struct cifs_sid *, const struct cifs_sid *);



#endif /* _CIFSACL_H */