[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

6 files changed, 17 insertions, 15 deletions

diff --git a/pkg/sentry/fs/proc/exec_args.go b/pkg/sentry/fs/proc/exec_args.go
index 24426b225..379429ab2 100644
--- a/pkg/sentry/fs/proc/exec_args.go
+++ b/pkg/sentry/fs/proc/exec_args.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/fs"
 	"gvisor.dev/gvisor/pkg/sentry/fs/fsutil"
 	"gvisor.dev/gvisor/pkg/sentry/kernel"
-	"gvisor.dev/gvisor/pkg/syserror"
 	"gvisor.dev/gvisor/pkg/usermem"
 	"gvisor.dev/gvisor/pkg/waiter"
 )
@@ -104,7 +104,7 @@ var _ fs.FileOperations = (*execArgFile)(nil)
 // Read reads the exec arg from the process's address space..
 func (f *execArgFile) Read(ctx context.Context, _ *fs.File, dst usermem.IOSequence, offset int64) (int64, error) {
 	if offset < 0 {
-		return 0, syserror.EINVAL
+		return 0, linuxerr.EINVAL
 	}
 
 	m, err := getTaskMM(f.t)
diff --git a/pkg/sentry/fs/proc/proc.go b/pkg/sentry/fs/proc/proc.go
index 2f2a9f920..546b57287 100644
--- a/pkg/sentry/fs/proc/proc.go
+++ b/pkg/sentry/fs/proc/proc.go
@@ -21,6 +21,7 @@ import (
 	"strconv"
 
 	"gvisor.dev/gvisor/pkg/context"
+	"gvisor.dev/gvisor/pkg/errors/linuxerr"
 	"gvisor.dev/gvisor/pkg/sentry/fs"
 	"gvisor.dev/gvisor/pkg/sentry/fs/fsutil"
 	"gvisor.dev/gvisor/pkg/sentry/fs/proc/device"
@@ -130,7 +131,7 @@ func (s *self) Readlink(ctx context.Context, inode *fs.Inode) (string, error) {
 	}
 
 	// Who is reading this link?
-	return "", syserror.EINVAL
+	return "", linuxerr.EINVAL
 }
 
 // threadSelf is more magical than "self" link.
@@ -154,7 +155,7 @@ func (s *threadSelf) Readlink(ctx context.Context, inode *fs.Inode) (string, err
 	}
 
 	// Who is reading this link?
-	return "", syserror.EINVAL
+	return "", linuxerr.EINVAL
 }
 
 // Lookup loads an Inode at name into a Dirent.
diff --git a/pkg/sentry/fs/proc/sys_net.go b/pkg/sentry/fs/proc/sys_net.go
index 4893af56b..71f37d582 100644
--- a/pkg/sentry/fs/proc/sys_net.go
+++ b/pkg/sentry/fs/proc/sys_net.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/fs"
 	"gvisor.dev/gvisor/pkg/sentry/fs/fsutil"
@@ -28,7 +29,6 @@ import (
 	"gvisor.dev/gvisor/pkg/sentry/fs/ramfs"
 	"gvisor.dev/gvisor/pkg/sentry/inet"
 	"gvisor.dev/gvisor/pkg/sync"
-	"gvisor.dev/gvisor/pkg/syserror"
 	"gvisor.dev/gvisor/pkg/tcpip/network/ipv4"
 	"gvisor.dev/gvisor/pkg/usermem"
 	"gvisor.dev/gvisor/pkg/waiter"
@@ -592,7 +592,7 @@ func (pf *portRangeFile) Write(ctx context.Context, _ *fs.File, src usermem.IOSe
 
 	// 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 := pf.inode.stack.SetPortRange(uint16(ports[0]), uint16(ports[1])); err != nil {
diff --git a/pkg/sentry/fs/proc/task.go b/pkg/sentry/fs/proc/task.go
index ae5ed25f9..7ece1377a 100644
--- a/pkg/sentry/fs/proc/task.go
+++ b/pkg/sentry/fs/proc/task.go
@@ -23,6 +23,7 @@ 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/fs"
 	"gvisor.dev/gvisor/pkg/sentry/fs/fsutil"
@@ -867,7 +868,7 @@ var _ fs.FileOperations = (*commFile)(nil)
 // Read implements fs.FileOperations.Read.
 func (f *commFile) Read(ctx context.Context, _ *fs.File, dst usermem.IOSequence, offset int64) (int64, error) {
 	if offset < 0 {
-		return 0, syserror.EINVAL
+		return 0, linuxerr.EINVAL
 	}
 
 	buf := []byte(f.t.Name() + "\n")
@@ -922,7 +923,7 @@ type auxvecFile struct {
 // Read implements fs.FileOperations.Read.
 func (f *auxvecFile) Read(ctx context.Context, _ *fs.File, dst usermem.IOSequence, offset int64) (int64, error) {
 	if offset < 0 {
-		return 0, syserror.EINVAL
+		return 0, linuxerr.EINVAL
 	}
 
 	m, err := getTaskMM(f.t)
diff --git a/pkg/sentry/fs/proc/uid_gid_map.go b/pkg/sentry/fs/proc/uid_gid_map.go
index 30d5ad4cf..fcdc1e7bd 100644
--- a/pkg/sentry/fs/proc/uid_gid_map.go
+++ b/pkg/sentry/fs/proc/uid_gid_map.go
@@ -21,12 +21,12 @@ 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/fs"
 	"gvisor.dev/gvisor/pkg/sentry/fs/fsutil"
 	"gvisor.dev/gvisor/pkg/sentry/kernel"
 	"gvisor.dev/gvisor/pkg/sentry/kernel/auth"
-	"gvisor.dev/gvisor/pkg/syserror"
 	"gvisor.dev/gvisor/pkg/usermem"
 	"gvisor.dev/gvisor/pkg/waiter"
 )
@@ -108,7 +108,7 @@ const maxIDMapLines = 5
 // Read implements fs.FileOperations.Read.
 func (imfo *idMapFileOperations) Read(ctx context.Context, file *fs.File, dst usermem.IOSequence, offset int64) (int64, error) {
 	if offset < 0 {
-		return 0, syserror.EINVAL
+		return 0, linuxerr.EINVAL
 	}
 	var entries []auth.IDMapEntry
 	if imfo.iops.gids {
@@ -134,7 +134,7 @@ func (imfo *idMapFileOperations) Write(ctx context.Context, file *fs.File, src u
 	// 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 {
@@ -154,7 +154,7 @@ func (imfo *idMapFileOperations) Write(ctx context.Context, file *fs.File, src u
 	}
 	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))
@@ -162,7 +162,7 @@ func (imfo *idMapFileOperations) Write(ctx context.Context, file *fs.File, src u
 		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
 	}
diff --git a/pkg/sentry/fs/proc/uptime.go b/pkg/sentry/fs/proc/uptime.go
index c0f6fb802..ac896f963 100644
--- a/pkg/sentry/fs/proc/uptime.go
+++ b/pkg/sentry/fs/proc/uptime.go
@@ -20,10 +20,10 @@ import (
 
 	"gvisor.dev/gvisor/pkg/abi/linux"
 	"gvisor.dev/gvisor/pkg/context"
+	"gvisor.dev/gvisor/pkg/errors/linuxerr"
 	"gvisor.dev/gvisor/pkg/sentry/fs"
 	"gvisor.dev/gvisor/pkg/sentry/fs/fsutil"
 	ktime "gvisor.dev/gvisor/pkg/sentry/kernel/time"
-	"gvisor.dev/gvisor/pkg/syserror"
 	"gvisor.dev/gvisor/pkg/usermem"
 	"gvisor.dev/gvisor/pkg/waiter"
 )
@@ -74,7 +74,7 @@ type uptimeFile struct {
 // Read implements fs.FileOperations.Read.
 func (f *uptimeFile) Read(ctx context.Context, _ *fs.File, dst usermem.IOSequence, offset int64) (int64, error) {
 	if offset < 0 {
-		return 0, syserror.EINVAL
+		return 0, linuxerr.EINVAL
 	}
 
 	now := ktime.NowFromContext(ctx)