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37233df9 | 1 | /* Copyright (C) 1993-2012 Free Software Foundation, Inc. |
41bdb6e2 | 2 | This file is part of the GNU C Library. |
dfd2257a | 3 | |
41bdb6e2 AJ |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public | |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
dfd2257a | 8 | |
41bdb6e2 AJ |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
dfd2257a | 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
41bdb6e2 | 12 | Lesser General Public License for more details. |
dfd2257a | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. | |
dfd2257a | 17 | |
41bdb6e2 AJ |
18 | As a special exception, if you link the code in this file with |
19 | files compiled with a GNU compiler to produce an executable, | |
20 | that does not cause the resulting executable to be covered by | |
21 | the GNU Lesser General Public License. This exception does not | |
22 | however invalidate any other reasons why the executable file | |
23 | might be covered by the GNU Lesser General Public License. | |
24 | This exception applies to code released by its copyright holders | |
25 | in files containing the exception. */ | |
dfd2257a UD |
26 | |
27 | #include "libioP.h" | |
28 | #include "stdio.h" | |
94b7cc37 | 29 | #include <fcntl.h> |
1a35b7fd | 30 | #include <stdlib.h> |
94b7cc37 | 31 | #include <unistd.h> |
dfd2257a | 32 | |
c44a663d UD |
33 | #include <fd_to_filename.h> |
34 | ||
37233df9 TS |
35 | #include <kernel-features.h> |
36 | ||
dfd2257a UD |
37 | FILE * |
38 | freopen64 (filename, mode, fp) | |
39 | const char* filename; | |
40 | const char* mode; | |
41 | FILE *fp; | |
42 | { | |
43 | #ifdef _G_OPEN64 | |
44 | FILE *result; | |
45 | CHECK_FILE (fp, NULL); | |
46 | if (!(fp->_flags & _IO_IS_FILEBUF)) | |
47 | return NULL; | |
0261d33f | 48 | _IO_acquire_lock (fp); |
94b7cc37 UD |
49 | int fd = _IO_fileno (fp); |
50 | const char *gfilename = (filename == NULL && fd >= 0 | |
51 | ? fd_to_filename (fd) : filename); | |
52 | fp->_flags2 |= _IO_FLAGS2_NOCLOSE; | |
81c64d40 | 53 | INTUSE(_IO_file_close_it) (fp); |
15a686af | 54 | _IO_JUMPS ((struct _IO_FILE_plus *) fp) = &_IO_file_jumps; |
bbdef797 | 55 | if (_IO_vtable_offset (fp) == 0 && fp->_wide_data != NULL) |
15a686af | 56 | fp->_wide_data->_wide_vtable = &_IO_wfile_jumps; |
94b7cc37 UD |
57 | result = INTUSE(_IO_file_fopen) (fp, gfilename, mode, 0); |
58 | fp->_flags2 &= ~_IO_FLAGS2_NOCLOSE; | |
81c64d40 UD |
59 | if (result != NULL) |
60 | result = __fopen_maybe_mmap (result); | |
3b1de3ba | 61 | if (result != NULL) |
c44a663d | 62 | { |
94b7cc37 UD |
63 | /* unbound stream orientation */ |
64 | result->_mode = 0; | |
65 | ||
66 | if (fd != -1) | |
67 | { | |
68 | #ifdef O_CLOEXEC | |
69 | # ifndef __ASSUME_DUP3 | |
70 | int newfd; | |
71 | if (__have_dup3 < 0) | |
72 | newfd = -1; | |
73 | else | |
74 | newfd = | |
75 | # endif | |
76 | dup3 (_IO_fileno (result), fd, | |
77 | (result->_flags2 & _IO_FLAGS2_CLOEXEC) != 0 | |
78 | ? O_CLOEXEC : 0); | |
79 | #else | |
80 | # define newfd 1 | |
81 | #endif | |
82 | ||
83 | #ifndef __ASSUME_DUP3 | |
84 | if (newfd < 0) | |
85 | { | |
86 | if (errno == ENOSYS) | |
87 | __have_dup3 = -1; | |
88 | ||
ed690b2f | 89 | __dup2 (_IO_fileno (result), fd); |
94b7cc37 UD |
90 | if ((result->_flags2 & _IO_FLAGS2_CLOEXEC) != 0) |
91 | __fcntl (fd, F_SETFD, FD_CLOEXEC); | |
92 | } | |
93 | #endif | |
94 | __close (_IO_fileno (result)); | |
95 | _IO_fileno (result) = fd; | |
96 | } | |
c44a663d | 97 | } |
94b7cc37 UD |
98 | else if (fd != -1) |
99 | __close (fd); | |
100 | if (filename == NULL) | |
101 | free ((char *) gfilename); | |
0261d33f | 102 | _IO_release_lock (fp); |
dfd2257a UD |
103 | return result; |
104 | #else | |
105 | __set_errno (ENOSYS); | |
106 | return NULL; | |
107 | #endif | |
108 | } |