diff options
Diffstat (limited to 'pkg/p9/file.go')
| -rw-r--r-- | pkg/p9/file.go | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/pkg/p9/file.go b/pkg/p9/file.go index 907445e15..cab35896f 100644 --- a/pkg/p9/file.go +++ b/pkg/p9/file.go @@ -89,6 +89,38 @@ type File interface { // On the server, SetAttr has a write concurrency guarantee. SetAttr(valid SetAttrMask, attr SetAttr) error + // GetXattr returns extended attributes of this node. + // + // Size indicates the size of the buffer that has been allocated to hold the + // attribute value. If the value is larger than size, implementations may + // return ERANGE to indicate that the buffer is too small, but they are also + // free to ignore the hint entirely (i.e. the value returned may be larger + // than size). All size checking is done independently at the syscall layer. + // + // On the server, GetXattr has a read concurrency guarantee. + GetXattr(name string, size uint64) (string, error) + + // SetXattr sets extended attributes on this node. + // + // On the server, SetXattr has a write concurrency guarantee. + SetXattr(name, value string, flags uint32) error + + // ListXattr lists the names of the extended attributes on this node. + // + // Size indicates the size of the buffer that has been allocated to hold the + // attribute list. If the list would be larger than size, implementations may + // return ERANGE to indicate that the buffer is too small, but they are also + // free to ignore the hint entirely (i.e. the value returned may be larger + // than size). All size checking is done independently at the syscall layer. + // + // On the server, ListXattr has a read concurrency guarantee. + ListXattr(size uint64) (map[string]struct{}, error) + + // RemoveXattr removes extended attributes on this node. + // + // On the server, RemoveXattr has a write concurrency guarantee. + RemoveXattr(name string) error + // Allocate allows the caller to directly manipulate the allocated disk space // for the file. See fallocate(2) for more details. Allocate(mode AllocateMode, offset, length uint64) error @@ -116,7 +148,7 @@ type File interface { // N.B. The server must resolve any lazy paths when open is called. // After this point, read and write may be called on files with no // deletion check, so resolving in the data path is not viable. - Open(mode OpenFlags) (*fd.FD, QID, uint32, error) + Open(flags OpenFlags) (*fd.FD, QID, uint32, error) // Read reads from this file. Open must be called first. // |