[syserror] Update syserror to linuxerr for EACCES, EBADF, and EPERM.

Update all instances of the above errors to the faster linuxerr implementation.
With the temporary linuxerr.Equals(), no logical changes are made.

PiperOrigin-RevId: 382306655

2 files changed, 8 insertions, 8 deletions

diff --git a/pkg/sentry/fsimpl/gofer/filesystem.go b/pkg/sentry/fsimpl/gofer/filesystem.go
index 067b7aac1..9b900801b 100644
--- a/pkg/sentry/fsimpl/gofer/filesystem.go
+++ b/pkg/sentry/fsimpl/gofer/filesystem.go
@@ -413,7 +413,7 @@ func (fs *filesystem) doCreateAt(ctx context.Context, rp *vfs.ResolvingPath, dir
 	}
 	if parent.isSynthetic() {
 		if createInSyntheticDir == nil {
-			return syserror.EPERM
+			return linuxerr.EPERM
 		}
 		if err := createInSyntheticDir(parent, name); err != nil {
 			return err
@@ -679,7 +679,7 @@ func (fs *filesystem) LinkAt(ctx context.Context, rp *vfs.ResolvingPath, vd vfs.
 		}
 		d := vd.Dentry().Impl().(*dentry)
 		if d.isDir() {
-			return syserror.EPERM
+			return linuxerr.EPERM
 		}
 		gid := auth.KGID(atomic.LoadUint32(&d.gid))
 		uid := auth.KUID(atomic.LoadUint32(&d.uid))
@@ -735,7 +735,7 @@ func (fs *filesystem) MkdirAt(ctx context.Context, rp *vfs.ResolvingPath, opts v
 	}, func(parent *dentry, name string) error {
 		if !opts.ForSyntheticMountpoint {
 			// Can't create non-synthetic files in synthetic directories.
-			return syserror.EPERM
+			return linuxerr.EPERM
 		}
 		parent.createSyntheticChildLocked(&createSyntheticOpts{
 			name: name,
@@ -794,7 +794,7 @@ func (fs *filesystem) MknodAt(ctx context.Context, rp *vfs.ResolvingPath, opts v
 			return nil
 		}
 		// Retain error from gofer if synthetic file cannot be created internally.
-		return syserror.EPERM
+		return linuxerr.EPERM
 	}, nil)
 }
 
@@ -866,7 +866,7 @@ afterTrailingSymlink:
 	if linuxerr.Equals(linuxerr.ENOENT, err) && mayCreate {
 		if parent.isSynthetic() {
 			parent.dirMu.Unlock()
-			return nil, syserror.EPERM
+			return nil, linuxerr.EPERM
 		}
 		fd, err := parent.createAndOpenChildLocked(ctx, rp, &opts, &ds)
 		parent.dirMu.Unlock()
diff --git a/pkg/sentry/fsimpl/gofer/gofer.go b/pkg/sentry/fsimpl/gofer/gofer.go
index c7ebd435c..2397e2427 100644
--- a/pkg/sentry/fsimpl/gofer/gofer.go
+++ b/pkg/sentry/fsimpl/gofer/gofer.go
@@ -1091,7 +1091,7 @@ func (d *dentry) setStat(ctx context.Context, creds *auth.Credentials, opts *vfs
 		return nil
 	}
 	if stat.Mask&^(linux.STATX_MODE|linux.STATX_UID|linux.STATX_GID|linux.STATX_ATIME|linux.STATX_MTIME|linux.STATX_SIZE) != 0 {
-		return syserror.EPERM
+		return linuxerr.EPERM
 	}
 	mode := linux.FileMode(atomic.LoadUint32(&d.mode))
 	if err := vfs.CheckSetStat(ctx, creds, opts, mode, auth.KUID(atomic.LoadUint32(&d.uid)), auth.KGID(atomic.LoadUint32(&d.gid))); err != nil {
@@ -1714,7 +1714,7 @@ func (d *dentry) getXattr(ctx context.Context, creds *auth.Credentials, opts *vf
 
 func (d *dentry) setXattr(ctx context.Context, creds *auth.Credentials, opts *vfs.SetXattrOptions) error {
 	if d.file.isNil() {
-		return syserror.EPERM
+		return linuxerr.EPERM
 	}
 	if err := d.checkXattrPermissions(creds, opts.Name, vfs.MayWrite); err != nil {
 		return err
@@ -1724,7 +1724,7 @@ func (d *dentry) setXattr(ctx context.Context, creds *auth.Credentials, opts *vf
 
 func (d *dentry) removeXattr(ctx context.Context, creds *auth.Credentials, name string) error {
 	if d.file.isNil() {
-		return syserror.EPERM
+		return linuxerr.EPERM
 	}
 	if err := d.checkXattrPermissions(creds, name, vfs.MayWrite); err != nil {
 		return err