long _syspipe(int fd[2]) { Chan *c[2]; Dev *d; static char *datastr[] = {"data", "data1"}; d = devtab[devno('|', 0)]; c[0] = namec("#|", Atodir, 0, 0); c[1] = 0; fd[0] = -1; fd[1] = -1; if(waserror()){ cclose(c[0]); if(c[1]) cclose(c[1]); nexterror(); } c[1] = cclone(c[0]); if(walk(&c[0], datastr+0, 1, 1, nil) < 0) error(Egreg); if(walk(&c[1], datastr+1, 1, 1, nil) < 0) error(Egreg); c[0] = d->open(c[0], ORDWR); c[1] = d->open(c[1], ORDWR); if(newfd2(fd, c) < 0) error(Enofd); poperror(); return 0; }
long syspipe(uint32 *arg) { int fd[2]; Chan *c[2]; Dev *d; static char *datastr[] = {"data", "data1"}; int *ufd; ufd = uvalidaddr(arg[0], 2*BY2WD, 1); evenaddr(arg[0]); d = devtab[devno('|', 0)]; c[0] = namec("#|", Atodir, 0, 0); c[1] = 0; fd[0] = -1; fd[1] = -1; if(waserror()){ cclose(c[0]); if(c[1]) cclose(c[1]); nexterror(); } c[1] = cclone(c[0]); if(walk(&c[0], datastr+0, 1, 1, nil) < 0) error(Egreg); if(walk(&c[1], datastr+1, 1, 1, nil) < 0) error(Egreg); c[0] = d->open(c[0], ORDWR); c[1] = d->open(c[1], ORDWR); if(newfd2(fd, c) < 0) error(Enofd); poperror(); ufd[0] = fd[0]; ufd[1] = fd[1]; return 0; }
long syspipe(ulong *arg) { int fd[2]; Chan *c[2]; Dev *d; static char *datastr[] = {"data", "data1"}; validaddr(arg[0], sizeof(fd), 1); validalign(arg[0], sizeof(int)); d = devtab[devno('|', 0)]; c[0] = namec("#|", Atodir, 0, 0); c[1] = 0; fd[0] = -1; fd[1] = -1; if(waserror()){ cclose(c[0]); if(c[1]) cclose(c[1]); nexterror(); } c[1] = cclone(c[0]); if(walk(&c[0], datastr+0, 1, 1, nil) < 0) error(Egreg); if(walk(&c[1], datastr+1, 1, 1, nil) < 0) error(Egreg); c[0] = d->open(c[0], ORDWR); c[1] = d->open(c[1], ORDWR); if(newfd2(fd, c) < 0) error(Enofd); poperror(); ((int*)arg[0])[0] = fd[0]; ((int*)arg[0])[1] = fd[1]; return 0; }