86 lines
1.6 KiB
C
86 lines
1.6 KiB
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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#include "../boot/boot.h"
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static char *paqfile;
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void
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configembed(Method *m)
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{
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if(*sys == '/' || *sys == '#'){
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/*
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* if the user specifies the disk in the boot cmd or
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* 'root is from' prompt, use it
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*/
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paqfile = sys;
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} else if(m->arg){
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/*
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* a default is supplied when the kernel is made
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*/
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paqfile = m->arg;
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}
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}
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int
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connectembed(void)
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{
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int i, p[2];
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Dir *dir;
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char **arg, **argp;
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dir = dirstat("/boot/paqfs");
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if(dir == nil)
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return -1;
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free(dir);
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dir = dirstat(paqfile);
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if(dir == nil || dir->mode & DMDIR)
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return -1;
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free(dir);
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print("paqfs...");
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if(bind("#0", "/dev", MREPL) < 0)
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fatal("bind #0");
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if(bind("#c", "/dev", MAFTER) < 0)
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fatal("bind #c");
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if(bind("#p", "/proc", MREPL) < 0)
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fatal("bind #p");
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if(pipe(p)<0)
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fatal("pipe");
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switch(fork()){
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case -1:
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fatal("fork");
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case 0:
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arg = malloc((bargc+5)*sizeof(char*));
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argp = arg;
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*argp++ = "/boot/paqfs";
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*argp++ = "-iv";
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*argp++ = paqfile;
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for(i=1; i<bargc; i++)
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*argp++ = bargv[i];
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*argp = 0;
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dup(p[0], 0);
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dup(p[1], 1);
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close(p[0]);
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close(p[1]);
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exec("/boot/paqfs", (const char**)arg);
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fatal("can't exec paqfs");
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default:
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break;
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}
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waitpid();
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close(p[1]);
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return p[0];
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}
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