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iostats: cannot spy on fd 0,1,2 as /fd is per process

--- a/sys/src/cmd/iostats.c

+++ b/sys/src/cmd/iostats.c

@@ -308,12 +308,8 @@

 		bind("#c/pid", "/dev/pid", MREPL);

 		bind("#c/ppid", "/dev/ppid", MREPL);

 		bind("#e", "/env", MREPL|MCREATE);

-		close(0);

-		close(1);

-		close(2);

-		open("/fd/0", OREAD);

-		open("/fd/1", OWRITE);

-		open("/fd/2", OWRITE);

+		bind("#d", "/fd", MREPL);

+

 		if(chdir(buf) < 0)

 			sysfatal("chdir");

 		exec(*argv, argv);