[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

3 files changed, 10 insertions, 9 deletions

diff --git a/pkg/sentry/fsimpl/ext/file_description.go b/pkg/sentry/fsimpl/ext/file_description.go
index 90b086468..2e9033c1d 100644
--- a/pkg/sentry/fsimpl/ext/file_description.go
+++ b/pkg/sentry/fsimpl/ext/file_description.go
@@ -17,8 +17,8 @@ package ext
 import (
 	"gvisor.dev/gvisor/pkg/abi/linux"
 	"gvisor.dev/gvisor/pkg/context"
+	"gvisor.dev/gvisor/pkg/errors/linuxerr"
 	"gvisor.dev/gvisor/pkg/sentry/vfs"
-	"gvisor.dev/gvisor/pkg/syserror"
 )
 
 // fileDescription is embedded by ext implementations of
@@ -49,7 +49,7 @@ func (fd *fileDescription) SetStat(ctx context.Context, opts vfs.SetStatOptions)
 	if opts.Stat.Mask == 0 {
 		return nil
 	}
-	return syserror.EPERM
+	return linuxerr.EPERM
 }
 
 // SetStat implements vfs.FileDescriptionImpl.StatFS.
diff --git a/pkg/sentry/fsimpl/ext/regular_file.go b/pkg/sentry/fsimpl/ext/regular_file.go
index 9a094716a..8edecb75c 100644
--- a/pkg/sentry/fsimpl/ext/regular_file.go
+++ b/pkg/sentry/fsimpl/ext/regular_file.go
@@ -111,7 +111,7 @@ func (fd *regularFileFD) Read(ctx context.Context, dst usermem.IOSequence, opts
 func (fd *regularFileFD) PWrite(ctx context.Context, src usermem.IOSequence, offset int64, opts vfs.WriteOptions) (int64, error) {
 	// write(2) specifies that EBADF must be returned if the fd is not open for
 	// writing.
-	return 0, syserror.EBADF
+	return 0, linuxerr.EBADF
 }
 
 // Write implements vfs.FileDescriptionImpl.Write.
diff --git a/pkg/sentry/fsimpl/ext/symlink.go b/pkg/sentry/fsimpl/ext/symlink.go
index 5e2bcc837..c01017203 100644
--- a/pkg/sentry/fsimpl/ext/symlink.go
+++ b/pkg/sentry/fsimpl/ext/symlink.go
@@ -16,6 +16,7 @@ package ext
 
 import (
 	"gvisor.dev/gvisor/pkg/context"
+	"gvisor.dev/gvisor/pkg/errors/linuxerr"
 	"gvisor.dev/gvisor/pkg/sentry/memmap"
 	"gvisor.dev/gvisor/pkg/sentry/vfs"
 	"gvisor.dev/gvisor/pkg/syserror"
@@ -81,22 +82,22 @@ func (fd *symlinkFD) Release(context.Context) {}
 
 // PRead implements vfs.FileDescriptionImpl.PRead.
 func (fd *symlinkFD) PRead(ctx context.Context, dst usermem.IOSequence, offset int64, opts vfs.ReadOptions) (int64, error) {
-	return 0, syserror.EBADF
+	return 0, linuxerr.EBADF
 }
 
 // Read implements vfs.FileDescriptionImpl.Read.
 func (fd *symlinkFD) Read(ctx context.Context, dst usermem.IOSequence, opts vfs.ReadOptions) (int64, error) {
-	return 0, syserror.EBADF
+	return 0, linuxerr.EBADF
 }
 
 // PWrite implements vfs.FileDescriptionImpl.PWrite.
 func (fd *symlinkFD) PWrite(ctx context.Context, src usermem.IOSequence, offset int64, opts vfs.WriteOptions) (int64, error) {
-	return 0, syserror.EBADF
+	return 0, linuxerr.EBADF
 }
 
 // Write implements vfs.FileDescriptionImpl.Write.
 func (fd *symlinkFD) Write(ctx context.Context, src usermem.IOSequence, opts vfs.WriteOptions) (int64, error) {
-	return 0, syserror.EBADF
+	return 0, linuxerr.EBADF
 }
 
 // IterDirents implements vfs.FileDescriptionImpl.IterDirents.
@@ -106,10 +107,10 @@ func (fd *symlinkFD) IterDirents(ctx context.Context, cb vfs.IterDirentsCallback
 
 // Seek implements vfs.FileDescriptionImpl.Seek.
 func (fd *symlinkFD) Seek(ctx context.Context, offset int64, whence int32) (int64, error) {
-	return 0, syserror.EBADF
+	return 0, linuxerr.EBADF
 }
 
 // ConfigureMMap implements vfs.FileDescriptionImpl.ConfigureMMap.
 func (fd *symlinkFD) ConfigureMMap(ctx context.Context, opts *memmap.MMapOpts) error {
-	return syserror.EBADF
+	return linuxerr.EBADF
 }