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cifs: Change key name to cifs.idmap, misc. clean-up 

Change idmap key name from cifs.cifs_idmap to cifs.idmap.
Removed unused structure wksidarr and function match_sid().
Handle errors correctly in function init_cifs().

Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Shirish Pargaonkar 2011-05-06 02:35:00 -05:00 committed by Steve French
parent f14bcf71d1
commit c4aca0c09f
3 changed files with 6 additions and 62 deletions
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59
fs/cifs/cifsacl.c
View File

@ -33,18 +33,6 @@
#include "cifsproto.h"
#include "cifs_debug.h"
static struct cifs_wksid wksidarr[NUM_WK_SIDS] = {
{{1, 0, {0, 0, 0, 0, 0, 0}, {0, 0, 0, 0, 0} }, "null user"},
{{1, 1, {0, 0, 0, 0, 0, 1}, {0, 0, 0, 0, 0} }, "nobody"},
{{1, 1, {0, 0, 0, 0, 0, 5}, {__constant_cpu_to_le32(11), 0, 0, 0, 0} }, "net-users"},
{{1, 1, {0, 0, 0, 0, 0, 5}, {__constant_cpu_to_le32(18), 0, 0, 0, 0} }, "sys"},
{{1, 2, {0, 0, 0, 0, 0, 5}, {__constant_cpu_to_le32(32), __constant_cpu_to_le32(544), 0, 0, 0} }, "root"},
{{1, 2, {0, 0, 0, 0, 0, 5}, {__constant_cpu_to_le32(32), __constant_cpu_to_le32(545), 0, 0, 0} }, "users"},
{{1, 2, {0, 0, 0, 0, 0, 5}, {__constant_cpu_to_le32(32), __constant_cpu_to_le32(546), 0, 0, 0} }, "guest"} }
;
/* security id for everyone/world system group */
static const struct cifs_sid sid_everyone = {
1, 1, {0, 0, 0, 0, 0, 1}, {0} };
@ -131,7 +119,7 @@ cifs_idmap_key_destroy(struct key *key)
}
struct key_type cifs_idmap_key_type = {
.name = "cifs.cifs_idmap",
.name = "cifs.idmap",
.instantiate = cifs_idmap_key_instantiate,
.destroy = cifs_idmap_key_destroy,
.describe = user_describe,
@ -435,51 +423,6 @@ cifs_destroy_idmaptrees(void)
spin_unlock(&sidgidlock);
}
int match_sid(struct cifs_sid *ctsid)
{
int i, j;
int num_subauth, num_sat, num_saw;
struct cifs_sid *cwsid;
if (!ctsid)
return -1;
for (i = 0; i < NUM_WK_SIDS; ++i) {
cwsid = &(wksidarr[i].cifssid);
/* compare the revision */
if (ctsid->revision != cwsid->revision)
continue;
/* compare all of the six auth values */
for (j = 0; j < 6; ++j) {
if (ctsid->authority[j] != cwsid->authority[j])
break;
}
if (j < 6)
continue; /* all of the auth values did not match */
/* 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 (j = 0; j < num_subauth; ++j) {
if (ctsid->sub_auth[j] != cwsid->sub_auth[j])
break;
}
if (j < num_subauth)
continue; /* all sub_auth values do not match */
}
cFYI(1, "matching sid: %s\n", wksidarr[i].sidname);
return 0; /* sids compare/match */
}
cFYI(1, "No matching sid");
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(const struct cifs_sid *ctsid, const struct cifs_sid *cwsid)

1
fs/cifs/cifsacl.h
View File

@ -98,7 +98,6 @@ extern struct key_type cifs_idmap_key_type;
extern const struct cred *root_cred;
#endif /* KERNEL */
extern int match_sid(struct cifs_sid *);
extern int compare_sids(const struct cifs_sid *, const struct cifs_sid *);
#endif /* _CIFSACL_H */

8
fs/cifs/cifsfs.c
View File

@ -1046,21 +1046,23 @@ init_cifs(void)
#ifdef CONFIG_CIFS_ACL
rc = init_cifs_idmap();
if (rc)
goto out_destroy_request_bufs;
goto out_register_key_type;
#endif /* CONFIG_CIFS_ACL */
rc = register_filesystem(&cifs_fs_type);
if (rc)
goto out_destroy_request_bufs;
goto out_init_cifs_idmap;
return 0;
out_destroy_request_bufs:
out_init_cifs_idmap:
#ifdef CONFIG_CIFS_ACL
exit_cifs_idmap();
out_register_key_type:
#endif
#ifdef CONFIG_CIFS_UPCALL
unregister_key_type(&cifs_spnego_key_type);
out_destroy_request_bufs:
#endif
cifs_destroy_request_bufs();
out_destroy_mids: