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lib9: pass $PLAN9_TARGET via CPP for get9root fallback value Allows this function to always return the proper path in situations where the $PLAN9 environment variable is not set, i.e. a rc login shell.
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 1 70bcc780 2004-03-25 devnull #include <u.h>

 2 70bcc780 2004-03-25 devnull #include <libc.h>

 3 70bcc780 2004-03-25 devnull 

 4 70bcc780 2004-03-25 devnull char*

 5 70bcc780 2004-03-25 devnull get9root(void)

 6 70bcc780 2004-03-25 devnull {

 7 b94ad13d 2005-01-04 devnull 	static char *s;

 8 70bcc780 2004-03-25 devnull 

 9 b94ad13d 2005-01-04 devnull 	if(s)

10 b94ad13d 2005-01-04 devnull 		return s;

11 b94ad13d 2005-01-04 devnull 

12 70bcc780 2004-03-25 devnull 	if((s = getenv("PLAN9")) != 0)

13 70bcc780 2004-03-25 devnull 		return s;

14 521fc081 2022-07-27 crossd 	s = PLAN9_TARGET;

15 b94ad13d 2005-01-04 devnull 	return s;

16 70bcc780 2004-03-25 devnull }