head 1.1; access; symbols experimental-1:1.1.0.4 autoconf:1.1.0.2; locks; strict; comment @ * @; 1.1 date 99.02.25.02.13.07; author brianp; state Exp; branches; next ; desc @@ 1.1 log @initial check-in @ text @ /* Copyright (c) Mark J. Kilgard, 1994. */ /* * (c) Copyright 1993, Silicon Graphics, Inc. * ALL RIGHTS RESERVED * Permission to use, copy, modify, and distribute this software for * any purpose and without fee is hereby granted, provided that the above * copyright notice appear in all copies and that both the copyright notice * and this permission notice appear in supporting documentation, and that * the name of Silicon Graphics, Inc. not be used in advertising * or publicity pertaining to distribution of the software without specific, * written prior permission. * * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS" * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE, * INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR * FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON * GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT, * SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY * KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION, * LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF * THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE. * * US Government Users Restricted Rights * Use, duplication, or disclosure by the Government is subject to * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph * (c)(1)(ii) of the Rights in Technical Data and Computer Software * clause at DFARS 252.227-7013 and/or in similar or successor * clauses in the FAR or the DOD or NASA FAR Supplement. * Unpublished-- rights reserved under the copyright laws of the * United States. Contractor/manufacturer is Silicon Graphics, * Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311. * * OpenGL(TM) is a trademark of Silicon Graphics, Inc. */ /* * nurbs.c * This program shows a NURBS (Non-uniform rational B-splines) * surface, shaped like a heart. */ #include #include #define S_NUMPOINTS 13 #define S_ORDER 3 #define S_NUMKNOTS (S_NUMPOINTS + S_ORDER) #define T_NUMPOINTS 3 #define T_ORDER 3 #define T_NUMKNOTS (T_NUMPOINTS + T_ORDER) #define SQRT2 1.41421356237309504880 /* initialized local data */ GLfloat sknots[S_NUMKNOTS] = {-1.0, -1.0, -1.0, 0.0, 1.0, 2.0, 3.0, 4.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 9.0, 9.0}; GLfloat tknots[T_NUMKNOTS] = {1.0, 1.0, 1.0, 2.0, 2.0, 2.0}; GLfloat ctlpoints[S_NUMPOINTS][T_NUMPOINTS][4] = { { {4.,2.,2.,1.},{4.,1.6,2.5,1.},{4.,2.,3.0,1.} }, { {5.,4.,2.,1.},{5.,4.,2.5,1.},{5.,4.,3.0,1.} }, { {6.,5.,2.,1.},{6.,5.,2.5,1.},{6.,5.,3.0,1.} }, { {SQRT2*6.,SQRT2*6.,SQRT2*2.,SQRT2}, {SQar,"utf8")) { if (value) { ret = 0; } else { opts->utf8 = 1; } } else if (!strcmp(this_char,"uni_xlate")) { if (value) { ret = 0; } else { opts->unicode_xlate = 1; } } else if (!strcmp(this_char,"posix")) { if (value) { ret = 0; } else { opts->posixfs = 1; } } else if (!strcmp(this_char,"nonumtail")) { if (value) { ret = 0; } else { opts->numtail = 0; } } if (this_char != options) *(this_char-1) = ','; if (value) { *savep = save; } if (ret == 0) { return 0; } } if (opts->unicode_xlate) { opts->utf8 = 0; } return 1; } struct super_block *vfat_read_super(struct super_block *sb,void *data, int silent) { struct super_block *res; MOD_INC_USE_COUNT; MSDOS_SB(sb)->options.isvfat = 1; sb->s_op = &vfat_sops; res = fat_read_super(sb, data, silent); if (res == NULL) { sb->s_dev = 0; MOD_DEC_USE_COUNT; return NULL; } if (!parse_options((char *) data, &(MSDOS_SB(sb)->options))) { MOD_DEC_USE_COUNT; } else { MSDOS_SB(sb)->options.dotsOK = 0; } return res; } #ifdef DEBUG static void check_stack(const char *fname, int lineno) { int stack_level; char *pg_dir; stack_level = (long)(&pg_dir)-current->kernel_stack_page; if (stack_level < 0) printk("*-*-*-* vfat kstack overflow in %s line %d: SL=%d\n", fname, lineno, stack_level); else if (stack_level < 500) printk("*-*-*-* vfat kstack low in %s line %d: SL=%d\n", fname, lineno, stack_level); #if 0 else printk("------- vfat kstack ok in %s line %d: SL=%d\n", fname, lineno, stack_level); #endif if (*(unsigned long *) current->kernel_stack_page != STACK_MAGIC) { printk("******* vfat stack corruption detected in %s at line %d\n", fname, lineno); } } static int debug = 0; static void dump_fat(struct super_block *sb,int start) { printk("["); while (start) { printk("%d ",start); start = fat_access(sb,start,-1); if (!start) { printk("ERROR"); break; } if (start == -1) break; } printk("]\n"); } static void dump_de(struct msdos_dir_entry *de) { int i; unsigned char *p = (unsigned char *) de; printk("["); for (i = 0; i < 32; i++, p++) { printk("%02x ", *p); } printk("]\n"); } #endif /* MS-DOS "device special files" */ static const char *reserved_names[] = { "CON ","PRN ","NUL ","AUX ", "LPT1 ","LPT2 ","LPT3 ","LPT4 ", "COM1 ","COM2 ","COM3 ","COM4 ", NULL }; /* Characters that are undesirable in an MS-DOS file name */ static char bad_chars[] = "*?<>|\":/\\"; static char replace_chars[] = "[];,+="; static int vfat_find(struct inode *dir,const char *name,int len, int find_long,int new_filename,int is_dir, struct slot_info *sinfo_out); /* Checks the validity of an long MS-DOS filename */ /* Returns negative number on error, 0 for a normal * return, and 1 for . or .. */ static int vfat_valid_longname(const char *name, int len, int dot_dirs, int xlate) { const char **reserved; unsigned char c; int i; if (IS_FREE(name)) return -EINVAL; if (name[0] == '.' && (len == 1 || (len == 2 && name[1] == '.'))) { if (!dot_dirs) return -EEXIST; return 1;