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authorAndrew Tridgell <tridge@samba.org>2004-12-03 13:04:10 +0000
committerGerald (Jerry) Carter <jerry@samba.org>2007-10-10 13:06:20 -0500
commit4075e28a4f87993858e630012cffe96e49ff6717 (patch)
treea7dbff811100545651368d66d2f5748d01313c39 /source4/ntvfs/posix
parent6e6374cb5bcffb4df8bdb0a83327fff92b61ac84 (diff)
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r4056: modified the access check code based on results from RAW-ACLS
test. Also added generic mapping bits for pvfs. We don't pass RAW-ACLS yet, but its close. (This used to be commit c7cbd966d49a5345ea326732587555d209c531fc)
Diffstat (limited to 'source4/ntvfs/posix')
-rw-r--r--source4/ntvfs/posix/pvfs_acl.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/source4/ntvfs/posix/pvfs_acl.c b/source4/ntvfs/posix/pvfs_acl.c
index c584ddc4e8..6eb4c13804 100644
--- a/source4/ntvfs/posix/pvfs_acl.c
+++ b/source4/ntvfs/posix/pvfs_acl.c
@@ -28,6 +28,38 @@
/*
+ map a single access_mask from generic to specific bits for files/dirs
+*/
+static uint32_t pvfs_translate_mask(uint32_t access_mask)
+{
+ if (access_mask & SEC_MASK_GENERIC) {
+ if (access_mask & SEC_GENERIC_READ) access_mask |= SEC_RIGHTS_FILE_READ;
+ if (access_mask & SEC_GENERIC_WRITE) access_mask |= SEC_RIGHTS_FILE_WRITE;
+ if (access_mask & SEC_GENERIC_EXECUTE) access_mask |= SEC_RIGHTS_FILE_EXECUTE;
+ if (access_mask & SEC_GENERIC_ALL) access_mask |= SEC_RIGHTS_FILE_ALL;
+ access_mask &= ~SEC_MASK_GENERIC;
+ }
+ return access_mask;
+}
+
+
+/*
+ map any generic access bits in the given acl
+ this relies on the fact that the mappings for files and directories
+ are the same
+*/
+static void pvfs_translate_generic_bits(struct security_acl *acl)
+{
+ unsigned i;
+
+ for (i=0;i<acl->num_aces;i++) {
+ struct security_ace *ace = &acl->aces[i];
+ ace->access_mask = pvfs_translate_mask(ace->access_mask);
+ }
+}
+
+
+/*
setup a default ACL for a file
*/
static NTSTATUS pvfs_default_acl(struct pvfs_state *pvfs,
@@ -222,9 +254,11 @@ NTSTATUS pvfs_acl_set(struct pvfs_state *pvfs,
}
if (secinfo_flags & SECINFO_DACL) {
sd->dacl = new_sd->dacl;
+ pvfs_translate_generic_bits(sd->dacl);
}
if (secinfo_flags & SECINFO_SACL) {
sd->sacl = new_sd->sacl;
+ pvfs_translate_generic_bits(sd->sacl);
}
status = pvfs_acl_save(pvfs, name, fd, acl);
@@ -343,8 +377,15 @@ NTSTATUS pvfs_access_check(struct pvfs_state *pvfs,
return NT_STATUS_INVALID_ACL;
}
+ /* expand the generic access bits to file specific bits */
+ *access_mask = pvfs_translate_mask(*access_mask);
+
+ /* check the acl against the required access mask */
status = sec_access_check(sd, token, *access_mask, access_mask);
+ /* this bit is always granted, even if not asked for */
+ *access_mask |= SEC_FILE_READ_ATTRIBUTE;
+
talloc_free(acl);
return status;