Struct wasi_common::dir::DirCaps

source ·
pub struct DirCaps { /* private fields */ }

Implementations§

Returns an empty set of flags.

Examples found in repository?
src/snapshots/preview_1.rs (line 1326)
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
    fn from(rights: &types::Rights) -> DirCaps {
        let mut caps = DirCaps::empty();
        if rights.contains(types::Rights::PATH_CREATE_DIRECTORY) {
            caps = caps | DirCaps::CREATE_DIRECTORY;
        }
        if rights.contains(types::Rights::PATH_CREATE_FILE) {
            caps = caps | DirCaps::CREATE_FILE;
        }
        if rights.contains(types::Rights::PATH_LINK_SOURCE) {
            caps = caps | DirCaps::LINK_SOURCE;
        }
        if rights.contains(types::Rights::PATH_LINK_TARGET) {
            caps = caps | DirCaps::LINK_TARGET;
        }
        if rights.contains(types::Rights::PATH_OPEN) {
            caps = caps | DirCaps::OPEN;
        }
        if rights.contains(types::Rights::FD_READDIR) {
            caps = caps | DirCaps::READDIR;
        }
        if rights.contains(types::Rights::PATH_READLINK) {
            caps = caps | DirCaps::READLINK;
        }
        if rights.contains(types::Rights::PATH_RENAME_SOURCE) {
            caps = caps | DirCaps::RENAME_SOURCE;
        }
        if rights.contains(types::Rights::PATH_RENAME_TARGET) {
            caps = caps | DirCaps::RENAME_TARGET;
        }
        if rights.contains(types::Rights::PATH_SYMLINK) {
            caps = caps | DirCaps::SYMLINK;
        }
        if rights.contains(types::Rights::PATH_REMOVE_DIRECTORY) {
            caps = caps | DirCaps::REMOVE_DIRECTORY;
        }
        if rights.contains(types::Rights::PATH_UNLINK_FILE) {
            caps = caps | DirCaps::UNLINK_FILE;
        }
        if rights.contains(types::Rights::PATH_FILESTAT_GET) {
            caps = caps | DirCaps::PATH_FILESTAT_GET;
        }
        if rights.contains(types::Rights::PATH_FILESTAT_SET_TIMES) {
            caps = caps | DirCaps::PATH_FILESTAT_SET_TIMES;
        }
        if rights.contains(types::Rights::FD_FILESTAT_GET) {
            caps = caps | DirCaps::FILESTAT_GET;
        }
        if rights.contains(types::Rights::FD_FILESTAT_SET_TIMES) {
            caps = caps | DirCaps::FILESTAT_SET_TIMES;
        }
        caps
    }

Returns the set containing all flags.

Examples found in repository?
src/ctx.rs (line 121)
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
    pub fn push_preopened_dir(
        &mut self,
        dir: Box<dyn WasiDir>,
        path: impl AsRef<Path>,
    ) -> Result<(), Error> {
        let caps = DirCaps::all();
        let file_caps = FileCaps::all();
        self.table().push(Box::new(DirEntry::new(
            caps,
            file_caps,
            Some(path.as_ref().to_owned()),
            dir,
        )))?;
        Ok(())
    }

Returns the raw value of the flags currently stored.

Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.

Convert from underlying bit representation, dropping any bits that do not correspond to flags.

Convert from underlying bit representation, preserving all bits (even those not corresponding to a defined flag).

Safety

The caller of the bitflags! macro can chose to allow or disallow extra bits for their bitflags type.

The caller of from_bits_unchecked() has to ensure that all bits correspond to a defined flag or that extra bits are valid for this bitflags type.

Returns true if no flags are currently stored.

Returns true if all flags are currently set.

Returns true if there are flags common to both self and other.

Examples found in repository?
src/dir.rs (line 126)
121
122
123
124
125
126
127
128
129
130
131
132
133
    pub fn capable_of_dir(&self, caps: DirCaps) -> Result<(), Error> {
        if self.caps.contains(caps) {
            Ok(())
        } else {
            let missing = caps & !self.caps;
            let err = if missing.intersects(DirCaps::READDIR) {
                Error::not_dir()
            } else {
                Error::perm()
            };
            Err(err.context(format!("desired rights {:?}, has {:?}", caps, self.caps)))
        }
    }

Returns true if all of the flags in other are contained within self.

Examples found in repository?
src/dir.rs (line 122)
121
122
123
124
125
126
127
128
129
130
131
132
133
    pub fn capable_of_dir(&self, caps: DirCaps) -> Result<(), Error> {
        if self.caps.contains(caps) {
            Ok(())
        } else {
            let missing = caps & !self.caps;
            let err = if missing.intersects(DirCaps::READDIR) {
                Error::not_dir()
            } else {
                Error::perm()
            };
            Err(err.context(format!("desired rights {:?}, has {:?}", caps, self.caps)))
        }
    }
More examples
Hide additional examples
src/snapshots/preview_1.rs (line 1271)
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
    fn from(caps: &DirCaps) -> types::Rights {
        let mut rights = types::Rights::empty();
        if caps.contains(DirCaps::CREATE_DIRECTORY) {
            rights = rights | types::Rights::PATH_CREATE_DIRECTORY;
        }
        if caps.contains(DirCaps::CREATE_FILE) {
            rights = rights | types::Rights::PATH_CREATE_FILE;
        }
        if caps.contains(DirCaps::LINK_SOURCE) {
            rights = rights | types::Rights::PATH_LINK_SOURCE;
        }
        if caps.contains(DirCaps::LINK_TARGET) {
            rights = rights | types::Rights::PATH_LINK_TARGET;
        }
        if caps.contains(DirCaps::OPEN) {
            rights = rights | types::Rights::PATH_OPEN;
        }
        if caps.contains(DirCaps::READDIR) {
            rights = rights | types::Rights::FD_READDIR;
        }
        if caps.contains(DirCaps::READLINK) {
            rights = rights | types::Rights::PATH_READLINK;
        }
        if caps.contains(DirCaps::RENAME_SOURCE) {
            rights = rights | types::Rights::PATH_RENAME_SOURCE;
        }
        if caps.contains(DirCaps::RENAME_TARGET) {
            rights = rights | types::Rights::PATH_RENAME_TARGET;
        }
        if caps.contains(DirCaps::SYMLINK) {
            rights = rights | types::Rights::PATH_SYMLINK;
        }
        if caps.contains(DirCaps::REMOVE_DIRECTORY) {
            rights = rights | types::Rights::PATH_REMOVE_DIRECTORY;
        }
        if caps.contains(DirCaps::UNLINK_FILE) {
            rights = rights | types::Rights::PATH_UNLINK_FILE;
        }
        if caps.contains(DirCaps::PATH_FILESTAT_GET) {
            rights = rights | types::Rights::PATH_FILESTAT_GET;
        }
        if caps.contains(DirCaps::PATH_FILESTAT_SET_TIMES) {
            rights = rights | types::Rights::PATH_FILESTAT_SET_TIMES;
        }
        if caps.contains(DirCaps::FILESTAT_GET) {
            rights = rights | types::Rights::FD_FILESTAT_GET;
        }
        if caps.contains(DirCaps::FILESTAT_SET_TIMES) {
            rights = rights | types::Rights::FD_FILESTAT_SET_TIMES;
        }
        rights
    }

Inserts the specified flags in-place.

Removes the specified flags in-place.

Toggles the specified flags in-place.

Inserts or removes the specified flags depending on the passed value.

Returns the intersection between the flags in self and other.

Specifically, the returned set contains only the flags which are present in both self and other.

This is equivalent to using the & operator (e.g. ops::BitAnd), as in flags & other.

Returns the union of between the flags in self and other.

Specifically, the returned set contains all flags which are present in either self or other, including any which are present in both (see Self::symmetric_difference if that is undesirable).

This is equivalent to using the | operator (e.g. ops::BitOr), as in flags | other.

Returns the difference between the flags in self and other.

Specifically, the returned set contains all flags present in self, except for the ones present in other.

It is also conceptually equivalent to the “bit-clear” operation: flags & !other (and this syntax is also supported).

This is equivalent to using the - operator (e.g. ops::Sub), as in flags - other.

Returns the symmetric difference between the flags in self and other.

Specifically, the returned set contains the flags present which are present in self or other, but that are not present in both. Equivalently, it contains the flags present in exactly one of the sets self and other.

This is equivalent to using the ^ operator (e.g. ops::BitXor), as in flags ^ other.

Returns the complement of this set of flags.

Specifically, the returned set contains all the flags which are not set in self, but which are allowed for this type.

Alternatively, it can be thought of as the set difference between Self::all() and self (e.g. Self::all() - self)

This is equivalent to using the ! operator (e.g. ops::Not), as in !flags.

Trait Implementations§

Formats the value using the given formatter.

Returns the intersection between the two sets of flags.

The resulting type after applying the & operator.

Disables all flags disabled in the set.

Returns the union of the two sets of flags.

The resulting type after applying the | operator.

Adds the set of flags.

Returns the left flags, but with all the right flags toggled.

The resulting type after applying the ^ operator.

Toggles the set of flags.

Returns a copy of the value. Read more
Performs copy-assignment from source. Read more
Formats the value using the given formatter. Read more
Extends a collection with the contents of an iterator. Read more
🔬This is a nightly-only experimental API. (extend_one)
Extends a collection with exactly one element.
🔬This is a nightly-only experimental API. (extend_one)
Reserves capacity in a collection for the given number of additional elements. Read more
Converts to this type from the input type.
Converts to this type from the input type.
Creates a value from an iterator. Read more
Feeds this value into the given Hasher. Read more
Feeds a slice of this type into the given Hasher. Read more
Formats the value using the given formatter.

Returns the complement of this set of flags.

The resulting type after applying the ! operator.
Formats the value using the given formatter.
This method returns an Ordering between self and other. Read more
Compares and returns the maximum of two values. Read more
Compares and returns the minimum of two values. Read more
Restrict a value to a certain interval. Read more
This method tests for self and other values to be equal, and is used by ==.
This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
This method returns an ordering between self and other values if one exists. Read more
This method tests less than (for self and other) and is used by the < operator. Read more
This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
This method tests greater than (for self and other) and is used by the > operator. Read more
This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

Returns the set difference of the two sets of flags.

The resulting type after applying the - operator.

Disables all flags enabled in the set.

Formats the value using the given formatter.

Auto Trait Implementations§

Blanket Implementations§

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more
Compare self to key and return true if they are equal.

Returns the argument unchanged.

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
Instruments this type with the current Span, returning an Instrumented wrapper. Read more

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning. Read more
Uses borrowed data to replace owned data, usually by cloning. Read more
The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.
Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more