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WebSVN – planix.SVN – Blame – /os/branches/feature-vt/sys/src/libc/9sys/putenv.c – Rev 2

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#include <u.h>
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#include <libc.h>
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int
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putenv(char *name, char *val)
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{
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	int f;
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	char ename[100];
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	long s;
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	if(strchr(name, '/') != nil)
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		return -1;
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	snprint(ename, sizeof ename, "/env/%s", name);
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	if(strcmp(ename+5, name) != 0)
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		return -1;
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	f = create(ename, OWRITE, 0664);
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	if(f < 0)
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		return -1;
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	s = strlen(val);
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	if(write(f, val, s) != s){
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		close(f);
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		return -1;
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	}
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	close(f);
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	return 0;
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}