2000/0506/boot/local.c (diff list | history)

boot/local.c on 1992/0317
1992/0317		#include <u.h> #include <libc.h> #include <../boot/boot.h>
1994/0312		static char diskname[2*NAMELEN];
1992/0317		static char *disk; void configlocal(Method *mp) {
1994/0312		char *p; int n;
1995/02021		if(*sys == '/' || *sys == '#'){ /* * if the user specifies the disk in the boot cmd or * 'root is from' prompt, use it */ disk = sys; } else if(strncmp(argv0, "dksc(0,", 7) == 0){ /* * on many mips arg0 of the boot command specifies the * scsi logical unit number */
1994/0312		p = strchr(argv0, ','); n = strtoul(p+1, 0, 10); sprint(diskname, "#w%d/sd%dfs", n, n); disk = diskname;
1995/02021		} else if(mp->arg){ /* * a default is supplied when the kernel is made */ disk = mp->arg; } else if(*bootdisk){ /* * an environment variable from a pc's plan9.ini or * from the mips nvram or generated by the kernel * is the last resort. */ disk = bootdisk;
1994/0312		}
1995/02021		/* if we've decided on one, pass it on to all programs */
1994/0312		if(disk) setenv("bootdisk", disk);
1995/02021
1992/0317		USED(mp); } int authlocal(void) { return -1; } int connectlocal(void) { int p[2];
2000/0506		Dir dir;
1992/0317		char d[DIRLEN]; char partition[2*NAMELEN];
1992/0902		char *dev;
1993/0403		char *args[16], **argp;
1992/0317
1999/0501		if(stat("/kfs", d) < 0)
1992/0317		return -1;
1992/0902		dev = disk ? disk : bootdisk; sprint(partition, "%sfs", dev);
2000/0506		if(dirstat(partition, &dir) < 0){
1992/0902		strcpy(partition, dev);
2000/0506		if(dirstat(partition, &dir) < 0)
1992/0902		return -1; }
2000/0506		if(dir.mode & CHDIR) return -1;
1992/0902
1999/0501		print("kfs...");
1992/0317		if(bind("#c", "/dev", MREPL) < 0) fatal("bind #c"); if(bind("#p", "/proc", MREPL) < 0) fatal("bind #p"); if(pipe(p)<0) fatal("pipe"); switch(fork()){ case -1: fatal("fork"); case 0:
1992/0902		dup(p[0], 0); dup(p[1], 1); close(p[0]); close(p[1]);
1993/0403		argp = args;
1999/0501		*argp++ = "kfs";
1993/0403		*argp++ = "-f"; *argp++ = partition; *argp++ = "-s"; *argp = 0;
1999/0501		exec("/kfs", args); fatal("can't exec kfs");
1992/0317		default: break; } close(p[1]); return p[0]; }