1*b30d1939SAndy Fiddaman /*********************************************************************** 2*b30d1939SAndy Fiddaman * * 3*b30d1939SAndy Fiddaman * This software is part of the ast package * 4*b30d1939SAndy Fiddaman * Copyright (c) 1985-2011 AT&T Intellectual Property * 5*b30d1939SAndy Fiddaman * and is licensed under the * 6*b30d1939SAndy Fiddaman * Eclipse Public License, Version 1.0 * 7*b30d1939SAndy Fiddaman * by AT&T Intellectual Property * 8*b30d1939SAndy Fiddaman * * 9*b30d1939SAndy Fiddaman * A copy of the License is available at * 10*b30d1939SAndy Fiddaman * http://www.eclipse.org/org/documents/epl-v10.html * 11*b30d1939SAndy Fiddaman * (with md5 checksum b35adb5213ca9657e911e9befb180842) * 12*b30d1939SAndy Fiddaman * * 13*b30d1939SAndy Fiddaman * Information and Software Systems Research * 14*b30d1939SAndy Fiddaman * AT&T Research * 15*b30d1939SAndy Fiddaman * Florham Park NJ * 16*b30d1939SAndy Fiddaman * * 17*b30d1939SAndy Fiddaman * Glenn Fowler <gsf@research.att.com> * 18*b30d1939SAndy Fiddaman * David Korn <dgk@research.att.com> * 19*b30d1939SAndy Fiddaman * Phong Vo <kpv@research.att.com> * 20*b30d1939SAndy Fiddaman * * 21*b30d1939SAndy Fiddaman ***********************************************************************/ 22*b30d1939SAndy Fiddaman #pragma prototyped 23*b30d1939SAndy Fiddaman 24*b30d1939SAndy Fiddaman /* 25*b30d1939SAndy Fiddaman * -last 3 arg open 26*b30d1939SAndy Fiddaman */ 27*b30d1939SAndy Fiddaman 28*b30d1939SAndy Fiddaman #include <ast.h> 29*b30d1939SAndy Fiddaman 30*b30d1939SAndy Fiddaman #if !defined(open) || !defined(_ast_O_LOCAL) 31*b30d1939SAndy Fiddaman 32*b30d1939SAndy Fiddaman NoN(open) 33*b30d1939SAndy Fiddaman 34*b30d1939SAndy Fiddaman #else 35*b30d1939SAndy Fiddaman 36*b30d1939SAndy Fiddaman #undef open 37*b30d1939SAndy Fiddaman 38*b30d1939SAndy Fiddaman extern int open(const char*, int, ...); 39*b30d1939SAndy Fiddaman 40*b30d1939SAndy Fiddaman #include <ls.h> 41*b30d1939SAndy Fiddaman #include <error.h> 42*b30d1939SAndy Fiddaman 43*b30d1939SAndy Fiddaman #ifdef O_NOCTTY 44*b30d1939SAndy Fiddaman #include <ast_tty.h> 45*b30d1939SAndy Fiddaman #endif 46*b30d1939SAndy Fiddaman 47*b30d1939SAndy Fiddaman int 48*b30d1939SAndy Fiddaman _ast_open(const char* path, int op, ...) 49*b30d1939SAndy Fiddaman { 50*b30d1939SAndy Fiddaman int fd; 51*b30d1939SAndy Fiddaman int mode; 52*b30d1939SAndy Fiddaman int save_errno; 53*b30d1939SAndy Fiddaman struct stat st; 54*b30d1939SAndy Fiddaman va_list ap; 55*b30d1939SAndy Fiddaman 56*b30d1939SAndy Fiddaman save_errno = errno; 57*b30d1939SAndy Fiddaman va_start(ap, op); 58*b30d1939SAndy Fiddaman mode = (op & O_CREAT) ? va_arg(ap, int) : S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH; 59*b30d1939SAndy Fiddaman va_end(ap); 60*b30d1939SAndy Fiddaman if (op & ~(_ast_O_LOCAL-1)) 61*b30d1939SAndy Fiddaman { 62*b30d1939SAndy Fiddaman if (!(op & O_CREAT)) 63*b30d1939SAndy Fiddaman op &= ~O_EXCL; 64*b30d1939SAndy Fiddaman for (;;) 65*b30d1939SAndy Fiddaman { 66*b30d1939SAndy Fiddaman if (op & O_TRUNC) 67*b30d1939SAndy Fiddaman { 68*b30d1939SAndy Fiddaman if ((op & O_EXCL) && !access(path, F_OK)) 69*b30d1939SAndy Fiddaman { 70*b30d1939SAndy Fiddaman errno = EEXIST; 71*b30d1939SAndy Fiddaman return(-1); 72*b30d1939SAndy Fiddaman } 73*b30d1939SAndy Fiddaman if ((fd = creat(path, (op & O_EXCL) ? 0 : mode)) < 0) 74*b30d1939SAndy Fiddaman return(-1); 75*b30d1939SAndy Fiddaman if (op & O_EXCL) 76*b30d1939SAndy Fiddaman { 77*b30d1939SAndy Fiddaman if (fstat(fd, &st) || (st.st_mode & S_IPERM)) 78*b30d1939SAndy Fiddaman { 79*b30d1939SAndy Fiddaman errno = EEXIST; 80*b30d1939SAndy Fiddaman close(fd); 81*b30d1939SAndy Fiddaman return(-1); 82*b30d1939SAndy Fiddaman } 83*b30d1939SAndy Fiddaman #if _lib_fchmod 84*b30d1939SAndy Fiddaman if (mode && fchmod(fd, mode)) 85*b30d1939SAndy Fiddaman #else 86*b30d1939SAndy Fiddaman if (mode && chmod(path, mode)) 87*b30d1939SAndy Fiddaman #endif 88*b30d1939SAndy Fiddaman errno = save_errno; 89*b30d1939SAndy Fiddaman } 90*b30d1939SAndy Fiddaman if ((op & O_ACCMODE) == O_RDWR) 91*b30d1939SAndy Fiddaman { 92*b30d1939SAndy Fiddaman close(fd); 93*b30d1939SAndy Fiddaman op &= ~(O_CREAT|O_TRUNC); 94*b30d1939SAndy Fiddaman continue; 95*b30d1939SAndy Fiddaman } 96*b30d1939SAndy Fiddaman } 97*b30d1939SAndy Fiddaman else if ((fd = open(path, op & (_ast_O_LOCAL-1), mode)) < 0) 98*b30d1939SAndy Fiddaman { 99*b30d1939SAndy Fiddaman if (op & O_CREAT) 100*b30d1939SAndy Fiddaman { 101*b30d1939SAndy Fiddaman op |= O_TRUNC; 102*b30d1939SAndy Fiddaman continue; 103*b30d1939SAndy Fiddaman } 104*b30d1939SAndy Fiddaman return(-1); 105*b30d1939SAndy Fiddaman } 106*b30d1939SAndy Fiddaman else if ((op & O_APPEND) && lseek(fd, 0L, SEEK_END) == -1L) 107*b30d1939SAndy Fiddaman errno = save_errno; 108*b30d1939SAndy Fiddaman #if O_NOCTTY 109*b30d1939SAndy Fiddaman if ((op & O_NOCTTY) && ioctl(fd, TIOCNOTTY, 0)) 110*b30d1939SAndy Fiddaman errno = save_errno; 111*b30d1939SAndy Fiddaman #endif 112*b30d1939SAndy Fiddaman break; 113*b30d1939SAndy Fiddaman } 114*b30d1939SAndy Fiddaman } 115*b30d1939SAndy Fiddaman else fd = open(path, op, mode); 116*b30d1939SAndy Fiddaman return(fd); 117*b30d1939SAndy Fiddaman } 118*b30d1939SAndy Fiddaman 119*b30d1939SAndy Fiddaman #endif 120