[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

1 files changed, 9 insertions, 8 deletions

diff --git a/pkg/sentry/kernel/sessions.go b/pkg/sentry/kernel/sessions.go
index 973d708a3..c0c1f1f13 100644
--- a/pkg/sentry/kernel/sessions.go
+++ b/pkg/sentry/kernel/sessions.go
@@ -16,6 +16,7 @@ package kernel
 
 import (
 	"gvisor.dev/gvisor/pkg/abi/linux"
+	"gvisor.dev/gvisor/pkg/errors/linuxerr"
 	"gvisor.dev/gvisor/pkg/syserror"
 )
 
@@ -277,14 +278,14 @@ func (tg *ThreadGroup) createSession() error {
 			continue
 		}
 		if s.leader == tg {
-			return syserror.EPERM
+			return linuxerr.EPERM
 		}
 		if s.id == SessionID(id) {
-			return syserror.EPERM
+			return linuxerr.EPERM
 		}
 		for pg := s.processGroups.Front(); pg != nil; pg = pg.Next() {
 			if pg.id == ProcessGroupID(id) {
-				return syserror.EPERM
+				return linuxerr.EPERM
 			}
 		}
 	}
@@ -380,11 +381,11 @@ func (tg *ThreadGroup) CreateProcessGroup() error {
 			continue
 		}
 		if s.leader == tg {
-			return syserror.EPERM
+			return linuxerr.EPERM
 		}
 		for pg := s.processGroups.Front(); pg != nil; pg = pg.Next() {
 			if pg.id == ProcessGroupID(id) {
-				return syserror.EPERM
+				return linuxerr.EPERM
 			}
 		}
 	}
@@ -442,17 +443,17 @@ func (tg *ThreadGroup) JoinProcessGroup(pidns *PIDNamespace, pgid ProcessGroupID
 	// Lookup the ProcessGroup.
 	pg := pidns.processGroups[pgid]
 	if pg == nil {
-		return syserror.EPERM
+		return linuxerr.EPERM
 	}
 
 	// Disallow the join if an execve has performed, per POSIX.
 	if checkExec && tg.execed {
-		return syserror.EACCES
+		return linuxerr.EACCES
 	}
 
 	// See if it's in the same session as ours.
 	if pg.session != tg.processGroup.session {
-		return syserror.EPERM
+		return linuxerr.EPERM
 	}
 
 	// Join the group; adjust children.