38 lines
812 B
C
38 lines
812 B
C
/*
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* This file is part of the UCB release of Plan 9. It is subject to the license
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* terms in the LICENSE file found in the top-level directory of this
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* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
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* part of the UCB release of Plan 9, including this file, may be copied,
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* modified, propagated, or distributed except according to the terms contained
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* in the LICENSE file.
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*/
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#include <u.h>
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#include <lib9.h>
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#include <ip.h>
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int
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myetheraddr(uint8_t *to, char *dev)
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{
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int n, fd;
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char buf[256];
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if(*dev == '/')
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sprint(buf, "%s/addr", dev);
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else
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sprint(buf, "/net/%s/addr", dev);
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fd = sys_open(buf, OREAD);
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if(fd < 0)
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return -1;
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n = jehanne_read(fd, buf, sizeof buf -1 );
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sys_close(fd);
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if(n <= 0)
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return -1;
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buf[n] = 0;
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parseether(to, buf);
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return 0;
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}
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