1990/1009/port/sysfile.c (diff list | history)

1990/1004/sys/src/9/port/sysfile.c:31,42 – 1990/1009/sys/src/9/port/sysfile.c:31,42 (short | long | prev | next)
1990/0227		if(fd<0 || NFD<=fd || (c=u->fd[fd])==0) error(0, Ebadfd); if(mode<0 || c->mode == 2)
1990/1009		if(mode<0 || c->mode==ORDWR)
1990/0227		return c; if((mode&16) && c->mode==0)
1990/1009		if((mode&OTRUNC) && c->mode==OREAD)
1990/0227		err: error(0, Ebadusefd); if((mode&~16) != c->mode)
1990/1009		if((mode&~OTRUNC) != c->mode)
1990/0227		goto err; return c; }
1990/1004/sys/src/9/port/sysfile.c:56,61 – 1990/1009/sys/src/9/port/sysfile.c:56,100
1990/0227		} long
1990/1009		syspipe(ulong *arg) { int fd[2]; Chan *c[2]; Dev *d; validaddr(arg[0], 2*BY2WD, 1); evenaddr(arg[0]); d = &devtab[devno('|', 0)]; c[0] = (*d->attach)(0); c[1] = 0; fd[0] = -1; fd[1] = -1; if(waserror()){ close(c[0]); if(c[1]) close(c[1]); if(fd[0] >= 0) u->fd[fd[0]]=0; if(fd[1] >= 0) u->fd[fd[1]]=0; nexterror(); } c[1] = (*d->clone)(c[0], 0); (*d->walk)(c[0], "data"); (*d->walk)(c[1], "data1"); c[0] = (*d->open)(c[0], ORDWR); c[1] = (*d->open)(c[1], ORDWR); fd[0] = newfd(); u->fd[fd[0]] = c[0]; fd[1] = newfd(); u->fd[fd[1]] = c[1]; ((long*)arg[0])[0] = fd[0]; ((long*)arg[0])[1] = fd[1]; poperror(); return 0; } long
1990/0227		sysdup(ulong *arg) { int fd;
1990/1004/sys/src/9/port/sysfile.c:180,186 – 1990/1009/sys/src/9/port/sysfile.c:219,225
1990/0227		Chan *c; long n; c = fdtochan(arg[0], 0);
1990/1009		c = fdtochan(arg[0], OREAD);
1990/1004		validaddr(arg[1], arg[2], 1);
1990/0227		qlock(c); if(waserror()){
1990/1004/sys/src/9/port/sysfile.c:208,214 – 1990/1009/sys/src/9/port/sysfile.c:247,253
1990/0227		Chan *c; long n; c = fdtochan(arg[0], 1);
1990/1009		c = fdtochan(arg[0], OWRITE);
1990/0227		validaddr(arg[1], arg[2], 0); qlock(c); if(waserror()){
1990/1004/sys/src/9/port/sysfile.c:380,422 – 1990/1009/sys/src/9/port/sysfile.c:419,424
1990/0227		sysmount(ulong *arg) { return bindmount(arg, 1); }                  long syspipe(ulong *arg) { int fd[2]; Chan *c[2]; Dev *d;                  validaddr(arg[0], 2*BY2WD, 1); evenaddr(arg[0]); d = &devtab[devno('|', 0)]; c[0] = (*d->attach)(0); c[1] = 0; fd[0] = -1; fd[1] = -1; if(waserror()){ close(c[0]); if(c[1]) close(c[1]); if(fd[0] >= 0) u->fd[fd[0]]=0; if(fd[1] >= 0) u->fd[fd[1]]=0; nexterror(); } c[1] = (*d->clone)(c[0], 0); c[0] = (*d->open)(c[0], ORDWR); c[1] = (*d->open)(c[1], ORDWR); fd[0] = newfd(); u->fd[fd[0]] = c[0]; fd[1] = newfd(); u->fd[fd[1]] = c[1]; ((long*)arg[0])[0] = fd[0]; ((long*)arg[0])[1] = fd[1]; poperror(); return 0; } long