37 lines
921 B
C
37 lines
921 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 <libc.h>
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/*
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* Format:
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3 r M 4 (0000000000457def 11 00) 8192 512 /arch/rc/lib/rcmain
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*/
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int
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jehanne_iounit(int fd)
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{
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int i, cfd;
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char buf[128], *args[10];
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jehanne_snprint(buf, sizeof buf, "#d/%dctl", fd);
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cfd = sys_open(buf, OREAD);
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if(cfd < 0)
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return 0;
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i = jehanne_read(cfd, buf, sizeof buf-1);
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sys_close(cfd);
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if(i <= 0)
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return 0;
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buf[i] = '\0';
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if(jehanne_tokenize(buf, args, nelem(args)) != nelem(args))
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return 0;
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return jehanne_atoi(args[7]);
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}
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