| ftell.c (290232) | ftell.c (290549) |
|---|---|
| 1/*- 2 * Copyright (c) 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Chris Torek. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 20 unchanged lines hidden (view full) --- 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33#if defined(LIBC_SCCS) && !defined(lint) 34static char sccsid[] = "@(#)ftell.c 8.2 (Berkeley) 5/4/95"; 35#endif /* LIBC_SCCS and not lint */ 36#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Chris Torek. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 20 unchanged lines hidden (view full) --- 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33#if defined(LIBC_SCCS) && !defined(lint) 34static char sccsid[] = "@(#)ftell.c 8.2 (Berkeley) 5/4/95"; 35#endif /* LIBC_SCCS and not lint */ 36#include <sys/cdefs.h> |
| 37__FBSDID("$FreeBSD: head/lib/libc/stdio/ftell.c 290232 2015-11-01 08:40:15Z ache $"); | 37__FBSDID("$FreeBSD: head/lib/libc/stdio/ftell.c 290549 2015-11-08 18:00:44Z ache $"); |
| 38 39#include "namespace.h" 40#include <sys/types.h> 41#include <errno.h> 42#include <fcntl.h> 43#include <limits.h> 44#include <stdio.h> 45#include "un-namespace.h" --- 47 unchanged lines hidden (view full) --- 93 errno = ESPIPE; /* historic practice */ 94 return (1); 95 } 96 97 /* 98 * Find offset of underlying I/O object, then 99 * adjust for buffered bytes. 100 */ | 38 39#include "namespace.h" 40#include <sys/types.h> 41#include <errno.h> 42#include <fcntl.h> 43#include <limits.h> 44#include <stdio.h> 45#include "un-namespace.h" --- 47 unchanged lines hidden (view full) --- 93 errno = ESPIPE; /* historic practice */ 94 return (1); 95 } 96 97 /* 98 * Find offset of underlying I/O object, then 99 * adjust for buffered bytes. 100 */ |
| 101 if (fp->_flags & __SOFF) | 101 if (!(fp->_flags & __SRD) && (fp->_flags & __SWR) && 102 fp->_p != NULL && fp->_p - fp->_bf._base > 0 && 103 ((fp->_flags & __SAPP) || (fp->_flags2 & __S2OAP))) { 104 if ((pos = _sseek(fp, (fpos_t)0, SEEK_END)) == -1) { 105 if (errno == ESPIPE || 106 (fp->_flags & __SOPT) || __sflush(fp) || 107 (pos = _sseek(fp, (fpos_t)0, SEEK_CUR)) == -1) 108 return (1); 109 else { 110 *offset = pos; 111 return (0); 112 } 113 } 114 } else if (fp->_flags & __SOFF) |
| 102 pos = fp->_offset; 103 else { 104 pos = _sseek(fp, (fpos_t)0, SEEK_CUR); 105 if (pos == -1) 106 return (1); 107 } 108 if (fp->_flags & __SRD) { 109 /* --- 10 unchanged lines hidden (view full) --- 120 pos -= fp->_r; /* Can be negative at this point. */ 121 } else if ((fp->_flags & __SWR) && fp->_p != NULL && 122 (n = fp->_p - fp->_bf._base) > 0) { 123 /* 124 * Writing. Any buffered characters cause the 125 * position to be greater than that in the 126 * underlying object. 127 */ | 115 pos = fp->_offset; 116 else { 117 pos = _sseek(fp, (fpos_t)0, SEEK_CUR); 118 if (pos == -1) 119 return (1); 120 } 121 if (fp->_flags & __SRD) { 122 /* --- 10 unchanged lines hidden (view full) --- 133 pos -= fp->_r; /* Can be negative at this point. */ 134 } else if ((fp->_flags & __SWR) && fp->_p != NULL && 135 (n = fp->_p - fp->_bf._base) > 0) { 136 /* 137 * Writing. Any buffered characters cause the 138 * position to be greater than that in the 139 * underlying object. 140 */ |
| 128 if ((fp->_flags & __SAPP) || (fp->_flags2 & __S2OAP)) { 129 int serrno = errno; 130 131 errno = 0; 132 if ((pos = _sseek(fp, (fpos_t)0, SEEK_END)) == -1) { 133 if (errno == ESPIPE || 134 (fp->_flags & __SOPT) || __sflush(fp) || 135 (pos = 136 _sseek(fp, (fpos_t)0, SEEK_CUR)) == -1) 137 return (1); 138 else { 139 errno = serrno; 140 *offset = pos; 141 return (0); 142 } 143 } 144 errno = serrno; 145 /* fp->_p can be changed in _sseek(), recalculate. */ 146 n = fp->_p - fp->_bf._base; 147 } | |
| 148 if (pos > OFF_MAX - n) { 149 errno = EOVERFLOW; 150 return (1); 151 } 152 pos += n; 153 } 154 *offset = pos; 155 return (0); 156} | 141 if (pos > OFF_MAX - n) { 142 errno = EOVERFLOW; 143 return (1); 144 } 145 pos += n; 146 } 147 *offset = pos; 148 return (0); 149} |