int close(int fd) { struct open_file *f = &files[fd]; int err1 = 0, err2 = 0; if ((unsigned)fd >= SOPEN_MAX || f->f_flags == 0) { errno = EBADF; return (-1); } if (f->f_rabuf != NULL) free(f->f_rabuf); if (!(f->f_flags & F_RAW) && f->f_ops) err1 = (f->f_ops->fo_close)(f); if (!(f->f_flags & F_NODEV) && f->f_dev) err2 = (f->f_dev->dv_close)(f); if (f->f_devdata != NULL) devclose(f); f->f_flags = 0; if (err1) { errno = err1; return (-1); } if (err2) { errno = err2; return (-1); } return (0); }
void displaywrite(const char *s, const char *dev){ void *handle=devopen(dev); if(!handle){ dbgpf("BOOT: Specified display device: %s\n", dev); panic("(BOOT) Display device not valid!"); } dputs(handle, (char*)s); devclose(handle); }
int open(const char *fname, int mode) { struct open_file *f; int fd, i, error, besterror; const char *file; if ((fd = o_gethandle()) == -1) { errno = EMFILE; return(-1); } f = &files[fd]; f->f_flags = mode + 1; f->f_dev = (struct devsw *)0; f->f_ops = (struct fs_ops *)0; f->f_offset = 0; f->f_devdata = NULL; file = (char *)0; error = devopen(f, fname, &file); if (error || (((f->f_flags & F_NODEV) == 0) && f->f_dev == (struct devsw *)0)) goto err; /* see if we opened a raw device; otherwise, 'file' is the file name. */ if (file == (char *)0 || *file == '\0') { f->f_flags |= F_RAW; f->f_rabuf = NULL; return (fd); } /* pass file name to the different filesystem open routines */ besterror = ENOENT; for (i = 0; file_system[i] != NULL; i++) { error = ((*file_system[i]).fo_open)(file, f); if (error == 0) { f->f_ops = file_system[i]; o_rainit(f); return (fd); } if (error != EINVAL) besterror = error; } error = besterror; if ((f->f_flags & F_NODEV) == 0) f->f_dev->dv_close(f); if (error) devclose(f); err: f->f_flags = 0; errno = error; return (-1); }
static void onsig( /* fatal signal */ int signo ) { static int gotsig = 0; if (gotsig++) /* two signals and we're gone! */ _exit(signo); #if !defined(_WIN32) && !defined(_WIN64) alarm(15); /* allow 15 seconds to clean up */ signal(SIGALRM, SIG_DFL); /* make certain we do die */ #endif eputs("signal - "); eputs(sigerr[signo]); eputs("\n"); devclose(); quit(3); }
void doexit(int status) { devrestore(); /* Restore device */ devclose(); /* Close device */ exit(status); /* Exit with indicated status */ }
int main(int argc, char *argv[]) { #define check(ol,al) if (argv[i][ol] || \ badarg(argc-i-1,argv+i+1,al)) \ goto badopt #define check_bool(olen,var) switch (argv[i][olen]) { \ case '\0': var = !var; break; \ case 'y': case 'Y': case 't': case 'T': \ case '+': case '1': var = 1; break; \ case 'n': case 'N': case 'f': case 'F': \ case '-': case '0': var = 0; break; \ default: goto badopt; } char *octnm = NULL; char *err; int rval; int i; /* global program name */ progname = argv[0] = fixargv0(argv[0]); /* set our defaults */ shadthresh = .1; shadcert = .25; directrelay = 0; vspretest = 128; srcsizerat = 0.; specthresh = .3; specjitter = 1.; maxdepth = 6; minweight = 1e-2; ambacc = 0.3; ambres = 32; ambdiv = 256; ambssamp = 64; /* option city */ for (i = 1; i < argc; i++) { /* expand arguments */ while ((rval = expandarg(&argc, &argv, i)) > 0) ; if (rval < 0) { sprintf(errmsg, "cannot expand '%s'", argv[i]); error(SYSTEM, errmsg); } if (argv[i] == NULL || argv[i][0] != '-') break; /* break from options */ if (!strcmp(argv[i], "-version")) { puts(VersionID); quit(0); } if (!strcmp(argv[i], "-defaults") || !strcmp(argv[i], "-help")) { printdefaults(); quit(0); } if (!strcmp(argv[i], "-devices")) { printdevices(); quit(0); } rval = getrenderopt(argc-i, argv+i); if (rval >= 0) { i += rval; continue; } rval = getviewopt(&ourview, argc-i, argv+i); if (rval >= 0) { i += rval; continue; } switch (argv[i][1]) { case 'n': /* # processes */ check(2,"i"); nproc = atoi(argv[++i]); if (nproc <= 0) error(USER, "bad number of processes"); break; case 'v': /* view file */ if (argv[i][2] != 'f') goto badopt; check(3,"s"); rval = viewfile(argv[++i], &ourview, NULL); if (rval < 0) { sprintf(errmsg, "cannot open view file \"%s\"", argv[i]); error(SYSTEM, errmsg); } else if (rval == 0) { sprintf(errmsg, "bad view file \"%s\"", argv[i]); error(USER, errmsg); } break; case 'b': /* grayscale */ check_bool(2,greyscale); break; case 'p': /* pixel */ switch (argv[i][2]) { case 's': /* sample */ check(3,"i"); psample = atoi(argv[++i]); break; case 't': /* threshold */ check(3,"f"); maxdiff = atof(argv[++i]); break; case 'e': /* exposure */ check(3,"f"); exposure = atof(argv[++i]); if (argv[i][0] == '+' || argv[i][0] == '-') exposure = pow(2.0, exposure); break; default: goto badopt; } break; case 'w': /* warnings */ rval = erract[WARNING].pf != NULL; check_bool(2,rval); if (rval) erract[WARNING].pf = wputs; else erract[WARNING].pf = NULL; break; case 'e': /* error file */ check(2,"s"); errfile = argv[++i]; break; case 'o': /* output device */ check(2,"s"); dvcname = argv[++i]; break; case 'R': /* render input file */ check(2,"s"); strcpy(rifname, argv[++i]); break; default: goto badopt; } } err = setview(&ourview); /* set viewing parameters */ if (err != NULL) error(USER, err); /* set up signal handling */ sigdie(SIGINT, "Interrupt"); sigdie(SIGTERM, "Terminate"); #if !defined(_WIN32) && !defined(_WIN64) sigdie(SIGHUP, "Hangup"); sigdie(SIGPIPE, "Broken pipe"); sigdie(SIGALRM, "Alarm clock"); #endif /* open error file */ if (errfile != NULL) { if (freopen(errfile, "a", stderr) == NULL) quit(2); fprintf(stderr, "**************\n*** PID %5d: ", getpid()); printargs(argc, argv, stderr); putc('\n', stderr); fflush(stderr); } #ifdef NICE nice(NICE); /* lower priority */ #endif /* get octree */ if (i == argc) octnm = NULL; else if (i == argc-1) octnm = argv[i]; else goto badopt; if (octnm == NULL) error(USER, "missing octree argument"); /* set up output & start process(es) */ SET_FILE_BINARY(stdout); ray_init(octnm); /* also calls ray_init_pmap() */ /* temporary shortcut, until winrview is refactored into a "device" */ #ifndef WIN_RVIEW rview(); /* run interactive viewer */ devclose(); /* close output device */ #endif /* PMAP: free photon maps */ ray_done_pmap(); #ifdef WIN_RVIEW return 1; #endif quit(0); badopt: sprintf(errmsg, "command line error at '%s'", argv[i]); error(USER, errmsg); return 1; /* pro forma return */ #undef check #undef check_bool }