From 203890b13447a41c484bfeb737958d1ae01383c9 Mon Sep 17 00:00:00 2001 From: Dean Deng Date: Tue, 26 Jan 2021 11:15:25 -0800 Subject: Move inotify events from syscall to vfs layer. This also causes inotify events to be generated when reading files for exec. This change also requires us to adjust splice+inotify tests due to discrepancies between gVisor and Linux behavior. Note that these discrepancies existed before; we just did not exercise them previously. See comment for more details. Fixes #5348. PiperOrigin-RevId: 353907187 --- pkg/sentry/syscalls/linux/vfs2/setstat.go | 13 +------------ 1 file changed, 1 insertion(+), 12 deletions(-) (limited to 'pkg/sentry/syscalls/linux/vfs2/setstat.go') diff --git a/pkg/sentry/syscalls/linux/vfs2/setstat.go b/pkg/sentry/syscalls/linux/vfs2/setstat.go index 1ee37e5a8..903169dc2 100644 --- a/pkg/sentry/syscalls/linux/vfs2/setstat.go +++ b/pkg/sentry/syscalls/linux/vfs2/setstat.go @@ -220,7 +220,6 @@ func Fallocate(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sys length := args[3].Int64() file := t.GetFileVFS2(fd) - if file == nil { return 0, nil, syserror.EBADF } @@ -229,23 +228,18 @@ func Fallocate(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sys if !file.IsWritable() { return 0, nil, syserror.EBADF } - if mode != 0 { return 0, nil, syserror.ENOTSUP } - if offset < 0 || length <= 0 { return 0, nil, syserror.EINVAL } size := offset + length - if size < 0 { return 0, nil, syserror.EFBIG } - limit := limits.FromContext(t).Get(limits.FileSize).Cur - if uint64(size) >= limit { t.SendSignal(&arch.SignalInfo{ Signo: int32(linux.SIGXFSZ), @@ -254,12 +248,7 @@ func Fallocate(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sys return 0, nil, syserror.EFBIG } - if err := file.Allocate(t, mode, uint64(offset), uint64(length)); err != nil { - return 0, nil, err - } - - file.Dentry().InotifyWithParent(t, linux.IN_MODIFY, 0, vfs.PathEvent) - return 0, nil, nil + return 0, nil, file.Allocate(t, mode, uint64(offset), uint64(length)) } // Utime implements Linux syscall utime(2). -- cgit v1.2.3