netbird/gvisor
0
0
Fork 0
mirror of https://github.com/netbirdio/gvisor.git synced 2026-05-22 17:12:49 -07:00
Code Issues Packages Projects Releases Wiki Activity

gvisor/fs: getdents returns 0 if offset is equal to FileMaxOffset

Browse Source 
FileMaxOffset is a special case when lseek(d, 0, SEEK_END) has been called.

PiperOrigin-RevId: 254498777
This commit is contained in:
Andrei Vagin
2019-06-21 17:25:17 -07:00
committed by gVisor bot
parent 6f933a934f
commit ab6774cebf
1 changed files with 10 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files
pkg/sentry/fs/dirent.go
+10 -3
View File
@@ -948,9 +948,6 @@ func direntReaddir(ctx context.Context, d *Dirent, it DirIterator, root *Dirent,
if dirCtx.Serializer == nil { if dirCtx.Serializer == nil {
panic("Dirent.Readdir: serializer must not be nil") panic("Dirent.Readdir: serializer must not be nil")
} }
if d.frozen {
return d.readdirFrozen(root, offset, dirCtx)
}
// Check that this is actually a directory before emitting anything. // Check that this is actually a directory before emitting anything.
// Once we have written entries for "." and "..", future errors from // Once we have written entries for "." and "..", future errors from
@@ -959,6 +956,16 @@ func direntReaddir(ctx context.Context, d *Dirent, it DirIterator, root *Dirent,
return 0, syserror.ENOTDIR return 0, syserror.ENOTDIR
} }
// This is a special case for lseek(fd, 0, SEEK_END).
// See SeekWithDirCursor for more details.
if offset == FileMaxOffset {
return offset, nil
}
if d.frozen {
return d.readdirFrozen(root, offset, dirCtx)
}
// Collect attrs for "." and "..". // Collect attrs for "." and "..".
dot, dotdot := d.GetDotAttrs(root) dot, dotdot := d.GetDotAttrs(root)