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13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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25 
26 package sun.nio.fs;
27 
28 import java.nio.file.attribute.*;
29 import java.io.IOException;
30 
31 import static sun.nio.fs.UnixNativeDispatcher.*;
32 import static sun.nio.fs.SolarisConstants.*;
33 
34 /**
35  * Solaris implementation of FileStore
36  */
37 
38 class SolarisFileStore
39     extends UnixFileStore
40 {
41     private final boolean xattrEnabled;
42 
SolarisFileStore(UnixPath file)43     SolarisFileStore(UnixPath file) throws IOException {
44         super(file);
45         this.xattrEnabled = xattrEnabled();
46     }
47 
SolarisFileStore(UnixFileSystem fs, UnixMountEntry entry)48     SolarisFileStore(UnixFileSystem fs, UnixMountEntry entry) throws IOException {
49         super(fs, entry);
50         this.xattrEnabled = xattrEnabled();
51     }
52 
53     // returns true if extended attributes enabled
xattrEnabled()54     private boolean xattrEnabled() {
55         long res = 0L;
56         try {
57             res = pathconf(file(), _PC_XATTR_ENABLED);
58         } catch (UnixException x) {
59             // ignore
60         }
61         return (res != 0L);
62     }
63 
64     @Override
findMountEntry()65     UnixMountEntry findMountEntry() throws IOException {
66         // On Solaris iterate over the entries in the mount table to find device
67         for (UnixMountEntry entry: file().getFileSystem().getMountEntries()) {
68             if (entry.dev() == dev()) {
69                 return entry;
70             }
71         }
72         throw new IOException("Device not found in mnttab");
73     }
74 
75     @Override
supportsFileAttributeView(Class<? extends FileAttributeView> type)76     public boolean supportsFileAttributeView(Class<? extends FileAttributeView> type) {
77         if (type == AclFileAttributeView.class) {
78             // lookup fstypes.properties
79             FeatureStatus status = checkIfFeaturePresent("nfsv4acl");
80             switch (status) {
81                 case PRESENT     : return true;
82                 case NOT_PRESENT : return false;
83                 default :
84                     // AclFileAttributeView available on ZFS
85                     return (type().equals("zfs"));
86             }
87         }
88         if (type == UserDefinedFileAttributeView.class) {
89             // lookup fstypes.properties
90             FeatureStatus status = checkIfFeaturePresent("xattr");
91             switch (status) {
92                 case PRESENT     : return true;
93                 case NOT_PRESENT : return false;
94                 default :
95                     // UserDefinedFileAttributeView available if extended
96                     // attributes supported
97                     return xattrEnabled;
98             }
99         }
100         return super.supportsFileAttributeView(type);
101     }
102 
103     @Override
supportsFileAttributeView(String name)104     public boolean supportsFileAttributeView(String name) {
105         if (name.equals("acl"))
106             return supportsFileAttributeView(AclFileAttributeView.class);
107         if (name.equals("user"))
108             return supportsFileAttributeView(UserDefinedFileAttributeView.class);
109         return super.supportsFileAttributeView(name);
110     }
111 }
112