[syserror] Change syserror to linuxerr for E2BIG, EADDRINUSE, and EINVAL

Remove three syserror entries duplicated in linuxerr. Because of the
linuxerr.Equals method, this is a mere change of return values from
syserror to linuxerr definitions.

Done with only these three errnos as CLs removing all grow to a significantly
large size.

PiperOrigin-RevId: 382173835

5 files changed, 21 insertions, 19 deletions

diff --git a/pkg/sentry/fsimpl/proc/filesystem.go b/pkg/sentry/fsimpl/proc/filesystem.go
index ce8f55b1f..f2697c12d 100644
--- a/pkg/sentry/fsimpl/proc/filesystem.go
+++ b/pkg/sentry/fsimpl/proc/filesystem.go
@@ -21,11 +21,11 @@ import (
 
 	"gvisor.dev/gvisor/pkg/abi/linux"
 	"gvisor.dev/gvisor/pkg/context"
+	"gvisor.dev/gvisor/pkg/errors/linuxerr"
 	"gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs"
 	"gvisor.dev/gvisor/pkg/sentry/kernel"
 	"gvisor.dev/gvisor/pkg/sentry/kernel/auth"
 	"gvisor.dev/gvisor/pkg/sentry/vfs"
-	"gvisor.dev/gvisor/pkg/syserror"
 )
 
 const (
@@ -76,7 +76,7 @@ func (ft FilesystemType) GetFilesystem(ctx context.Context, vfsObj *vfs.VirtualF
 		maxCachedDentries, err = strconv.ParseUint(str, 10, 64)
 		if err != nil {
 			ctx.Warningf("proc.FilesystemType.GetFilesystem: invalid dentry cache limit: dentry_cache_limit=%s", str)
-			return nil, nil, syserror.EINVAL
+			return nil, nil, linuxerr.EINVAL
 		}
 	}
 
diff --git a/pkg/sentry/fsimpl/proc/task_files.go b/pkg/sentry/fsimpl/proc/task_files.go
index b294dfd6a..9187f5b11 100644
--- a/pkg/sentry/fsimpl/proc/task_files.go
+++ b/pkg/sentry/fsimpl/proc/task_files.go
@@ -21,6 +21,7 @@ import (
 
 	"gvisor.dev/gvisor/pkg/abi/linux"
 	"gvisor.dev/gvisor/pkg/context"
+	"gvisor.dev/gvisor/pkg/errors/linuxerr"
 	"gvisor.dev/gvisor/pkg/hostarch"
 	"gvisor.dev/gvisor/pkg/safemem"
 	"gvisor.dev/gvisor/pkg/sentry/fsbridge"
@@ -325,7 +326,7 @@ func (d *idMapData) Write(ctx context.Context, src usermem.IOSequence, offset in
 	// the file ..." - user_namespaces(7)
 	srclen := src.NumBytes()
 	if srclen >= hostarch.PageSize || offset != 0 {
-		return 0, syserror.EINVAL
+		return 0, linuxerr.EINVAL
 	}
 	b := make([]byte, srclen)
 	if _, err := src.CopyIn(ctx, b); err != nil {
@@ -345,7 +346,7 @@ func (d *idMapData) Write(ctx context.Context, src usermem.IOSequence, offset in
 	}
 	lines := bytes.SplitN(b, []byte("\n"), maxIDMapLines+1)
 	if len(lines) > maxIDMapLines {
-		return 0, syserror.EINVAL
+		return 0, linuxerr.EINVAL
 	}
 
 	entries := make([]auth.IDMapEntry, len(lines))
@@ -353,7 +354,7 @@ func (d *idMapData) Write(ctx context.Context, src usermem.IOSequence, offset in
 		var e auth.IDMapEntry
 		_, err := fmt.Sscan(string(l), &e.FirstID, &e.FirstParentID, &e.Length)
 		if err != nil {
-			return 0, syserror.EINVAL
+			return 0, linuxerr.EINVAL
 		}
 		entries[i] = e
 	}
@@ -461,10 +462,10 @@ func (fd *memFD) Seek(ctx context.Context, offset int64, whence int32) (int64, e
 	case linux.SEEK_CUR:
 		offset += fd.offset
 	default:
-		return 0, syserror.EINVAL
+		return 0, linuxerr.EINVAL
 	}
 	if offset < 0 {
-		return 0, syserror.EINVAL
+		return 0, linuxerr.EINVAL
 	}
 	fd.offset = offset
 	return offset, nil
diff --git a/pkg/sentry/fsimpl/proc/tasks_files.go b/pkg/sentry/fsimpl/proc/tasks_files.go
index 045ed7a2d..2def1ca48 100644
--- a/pkg/sentry/fsimpl/proc/tasks_files.go
+++ b/pkg/sentry/fsimpl/proc/tasks_files.go
@@ -21,6 +21,7 @@ import (
 
 	"gvisor.dev/gvisor/pkg/abi/linux"
 	"gvisor.dev/gvisor/pkg/context"
+	"gvisor.dev/gvisor/pkg/errors/linuxerr"
 	"gvisor.dev/gvisor/pkg/hostarch"
 	"gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs"
 	"gvisor.dev/gvisor/pkg/sentry/kernel"
@@ -53,7 +54,7 @@ func (s *selfSymlink) Readlink(ctx context.Context, _ *vfs.Mount) (string, error
 	t := kernel.TaskFromContext(ctx)
 	if t == nil {
 		// Who is reading this link?
-		return "", syserror.EINVAL
+		return "", linuxerr.EINVAL
 	}
 	tgid := s.pidns.IDOfThreadGroup(t.ThreadGroup())
 	if tgid == 0 {
@@ -94,7 +95,7 @@ func (s *threadSelfSymlink) Readlink(ctx context.Context, _ *vfs.Mount) (string,
 	t := kernel.TaskFromContext(ctx)
 	if t == nil {
 		// Who is reading this link?
-		return "", syserror.EINVAL
+		return "", linuxerr.EINVAL
 	}
 	tgid := s.pidns.IDOfThreadGroup(t.ThreadGroup())
 	tid := s.pidns.IDOfTask(t)
diff --git a/pkg/sentry/fsimpl/proc/tasks_sys.go b/pkg/sentry/fsimpl/proc/tasks_sys.go
index 2bc98a94f..99f64a9d8 100644
--- a/pkg/sentry/fsimpl/proc/tasks_sys.go
+++ b/pkg/sentry/fsimpl/proc/tasks_sys.go
@@ -21,6 +21,7 @@ import (
 
 	"gvisor.dev/gvisor/pkg/abi/linux"
 	"gvisor.dev/gvisor/pkg/context"
+	"gvisor.dev/gvisor/pkg/errors/linuxerr"
 	"gvisor.dev/gvisor/pkg/hostarch"
 	"gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs"
 	"gvisor.dev/gvisor/pkg/sentry/inet"
@@ -28,7 +29,6 @@ import (
 	"gvisor.dev/gvisor/pkg/sentry/kernel/auth"
 	"gvisor.dev/gvisor/pkg/sentry/vfs"
 	"gvisor.dev/gvisor/pkg/sync"
-	"gvisor.dev/gvisor/pkg/syserror"
 	"gvisor.dev/gvisor/pkg/tcpip/network/ipv4"
 	"gvisor.dev/gvisor/pkg/usermem"
 )
@@ -209,7 +209,7 @@ func (d *tcpSackData) Generate(ctx context.Context, buf *bytes.Buffer) error {
 func (d *tcpSackData) Write(ctx context.Context, src usermem.IOSequence, offset int64) (int64, error) {
 	if offset != 0 {
 		// No need to handle partial writes thus far.
-		return 0, syserror.EINVAL
+		return 0, linuxerr.EINVAL
 	}
 	if src.NumBytes() == 0 {
 		return 0, nil
@@ -257,7 +257,7 @@ func (d *tcpRecoveryData) Generate(ctx context.Context, buf *bytes.Buffer) error
 func (d *tcpRecoveryData) Write(ctx context.Context, src usermem.IOSequence, offset int64) (int64, error) {
 	if offset != 0 {
 		// No need to handle partial writes thus far.
-		return 0, syserror.EINVAL
+		return 0, linuxerr.EINVAL
 	}
 	if src.NumBytes() == 0 {
 		return 0, nil
@@ -311,7 +311,7 @@ func (d *tcpMemData) Generate(ctx context.Context, buf *bytes.Buffer) error {
 func (d *tcpMemData) Write(ctx context.Context, src usermem.IOSequence, offset int64) (int64, error) {
 	if offset != 0 {
 		// No need to handle partial writes thus far.
-		return 0, syserror.EINVAL
+		return 0, linuxerr.EINVAL
 	}
 	if src.NumBytes() == 0 {
 		return 0, nil
@@ -396,7 +396,7 @@ func (ipf *ipForwarding) Generate(ctx context.Context, buf *bytes.Buffer) error
 func (ipf *ipForwarding) Write(ctx context.Context, src usermem.IOSequence, offset int64) (int64, error) {
 	if offset != 0 {
 		// No need to handle partial writes thus far.
-		return 0, syserror.EINVAL
+		return 0, linuxerr.EINVAL
 	}
 	if src.NumBytes() == 0 {
 		return 0, nil
@@ -449,7 +449,7 @@ func (pr *portRange) Generate(ctx context.Context, buf *bytes.Buffer) error {
 func (pr *portRange) Write(ctx context.Context, src usermem.IOSequence, offset int64) (int64, error) {
 	if offset != 0 {
 		// No need to handle partial writes thus far.
-		return 0, syserror.EINVAL
+		return 0, linuxerr.EINVAL
 	}
 	if src.NumBytes() == 0 {
 		return 0, nil
@@ -467,7 +467,7 @@ func (pr *portRange) Write(ctx context.Context, src usermem.IOSequence, offset i
 
 	// Port numbers must be uint16s.
 	if ports[0] < 0 || ports[1] < 0 || ports[0] > math.MaxUint16 || ports[1] > math.MaxUint16 {
-		return 0, syserror.EINVAL
+		return 0, linuxerr.EINVAL
 	}
 
 	if err := pr.stack.SetPortRange(uint16(ports[0]), uint16(ports[1])); err != nil {
diff --git a/pkg/sentry/fsimpl/proc/yama.go b/pkg/sentry/fsimpl/proc/yama.go
index e039ec45e..7240563d7 100644
--- a/pkg/sentry/fsimpl/proc/yama.go
+++ b/pkg/sentry/fsimpl/proc/yama.go
@@ -21,11 +21,11 @@ import (
 
 	"gvisor.dev/gvisor/pkg/abi/linux"
 	"gvisor.dev/gvisor/pkg/context"
+	"gvisor.dev/gvisor/pkg/errors/linuxerr"
 	"gvisor.dev/gvisor/pkg/hostarch"
 	"gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs"
 	"gvisor.dev/gvisor/pkg/sentry/kernel"
 	"gvisor.dev/gvisor/pkg/sentry/kernel/auth"
-	"gvisor.dev/gvisor/pkg/syserror"
 	"gvisor.dev/gvisor/pkg/usermem"
 )
 
@@ -56,7 +56,7 @@ func (s *yamaPtraceScope) Generate(ctx context.Context, buf *bytes.Buffer) error
 func (s *yamaPtraceScope) Write(ctx context.Context, src usermem.IOSequence, offset int64) (int64, error) {
 	if offset != 0 {
 		// Ignore partial writes.
-		return 0, syserror.EINVAL
+		return 0, linuxerr.EINVAL
 	}
 	if src.NumBytes() == 0 {
 		return 0, nil
@@ -73,7 +73,7 @@ func (s *yamaPtraceScope) Write(ctx context.Context, src usermem.IOSequence, off
 
 	// We do not support YAMA levels > YAMA_SCOPE_RELATIONAL.
 	if v < linux.YAMA_SCOPE_DISABLED || v > linux.YAMA_SCOPE_RELATIONAL {
-		return 0, syserror.EINVAL
+		return 0, linuxerr.EINVAL
 	}
 
 	atomic.StoreInt32(s.level, v)