Rev 4874 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
4349 | Serge | 1 | /* |
2 | * Copyright (c) 1990 The Regents of the University of California. |
||
3 | * All rights reserved. |
||
4 | * |
||
5 | * Redistribution and use in source and binary forms are permitted |
||
6 | * provided that the above copyright notice and this paragraph are |
||
7 | * duplicated in all such forms and that any documentation, |
||
8 | * advertising materials, and other materials related to such |
||
9 | * distribution and use acknowledge that the software was developed |
||
10 | * by the University of California, Berkeley. The name of the |
||
11 | * University may not be used to endorse or promote products derived |
||
12 | * from this software without specific prior written permission. |
||
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
||
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
||
15 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
||
16 | */ |
||
17 | |||
18 | /* |
||
19 | FUNCTION |
||
20 | < |
||
21 | |||
22 | INDEX |
||
23 | fdopen |
||
24 | INDEX |
||
25 | _fdopen_r |
||
26 | |||
27 | ANSI_SYNOPSIS |
||
28 | #include |
||
29 | FILE *fdopen(int <[fd]>, const char *<[mode]>); |
||
30 | FILE *_fdopen_r(struct _reent *<[reent]>, |
||
31 | int <[fd]>, const char *<[mode]>); |
||
32 | |||
33 | TRAD_SYNOPSIS |
||
34 | #include |
||
35 | FILE *fdopen(<[fd]>, <[mode]>) |
||
36 | int <[fd]>; |
||
37 | char *<[mode]>; |
||
38 | |||
39 | FILE *_fdopen_r(<[reent]>, <[fd]>, <[mode]>) |
||
40 | struct _reent *<[reent]>; |
||
41 | int <[fd]>; |
||
42 | char *<[mode]>); |
||
43 | |||
44 | DESCRIPTION |
||
45 | < |
||
46 | descriptor for an already-open file (returned, for example, by the |
||
47 | system subroutine < |
||
48 | The <[mode]> argument has the same meanings as in < |
||
49 | |||
50 | RETURNS |
||
51 | File pointer or < |
||
52 | |||
53 | PORTABILITY |
||
54 | < |
||
55 | */ |
||
56 | |||
57 | #include <_ansi.h> |
||
58 | #include |
||
59 | #include |
||
60 | #include |
||
61 | #include |
||
62 | #include |
||
63 | #include "local.h" |
||
64 | #include <_syslist.h> |
||
65 | |||
66 | FILE * |
||
67 | _DEFUN(_fdopen_r, (ptr, fd, mode), |
||
68 | struct _reent *ptr _AND |
||
69 | int fd _AND |
||
70 | _CONST char *mode) |
||
71 | { |
||
72 | register FILE *fp; |
||
73 | int flags, oflags; |
||
74 | #ifdef HAVE_FCNTL |
||
75 | int fdflags, fdmode; |
||
76 | #endif |
||
77 | |||
78 | if ((flags = __sflags (ptr, mode, &oflags)) == 0) |
||
79 | return 0; |
||
80 | |||
81 | /* make sure the mode the user wants is a subset of the actual mode */ |
||
82 | #ifdef HAVE_FCNTL |
||
83 | if ((fdflags = _fcntl_r (ptr, fd, F_GETFL, 0)) < 0) |
||
84 | return 0; |
||
85 | fdmode = fdflags & O_ACCMODE; |
||
86 | if (fdmode != O_RDWR && (fdmode != (oflags & O_ACCMODE))) |
||
87 | { |
||
88 | ptr->_errno = EBADF; |
||
89 | return 0; |
||
90 | } |
||
91 | #endif |
||
92 | |||
93 | if ((fp = __sfp (ptr)) == 0) |
||
94 | return 0; |
||
95 | |||
4921 | Serge | 96 | _newlib_flockfile_start (fp); |
4349 | Serge | 97 | |
98 | fp->_flags = flags; |
||
99 | /* POSIX recommends setting the O_APPEND bit on fd to match append |
||
100 | streams. Someone may later clear O_APPEND on fileno(fp), but the |
||
101 | stream must still remain in append mode. Rely on __sflags |
||
102 | setting __SAPP properly. */ |
||
103 | #ifdef HAVE_FCNTL |
||
104 | if ((oflags & O_APPEND) && !(fdflags & O_APPEND)) |
||
105 | _fcntl_r (ptr, fd, F_SETFL, fdflags | O_APPEND); |
||
106 | #endif |
||
107 | fp->_file = fd; |
||
108 | fp->_cookie = (_PTR) fp; |
||
109 | |||
110 | #undef _read |
||
111 | #undef _write |
||
112 | #undef _seek |
||
113 | #undef _close |
||
114 | |||
115 | fp->_read = __sread; |
||
116 | fp->_write = __swrite; |
||
117 | fp->_seek = __sseek; |
||
118 | fp->_close = __sclose; |
||
119 | |||
120 | #ifdef __SCLE |
||
121 | /* Explicit given mode results in explicit setting mode on fd */ |
||
122 | if (oflags & O_BINARY) |
||
123 | setmode (fp->_file, O_BINARY); |
||
124 | else if (oflags & O_TEXT) |
||
125 | setmode (fp->_file, O_TEXT); |
||
126 | if (__stextmode (fp->_file)) |
||
127 | fp->_flags |= __SCLE; |
||
128 | #endif |
||
129 | |||
4921 | Serge | 130 | _newlib_flockfile_end (fp); |
4349 | Serge | 131 | return fp; |
132 | } |
||
133 | |||
134 | #ifndef _REENT_ONLY |
||
135 | |||
136 | FILE * |
||
137 | _DEFUN(fdopen, (fd, mode), |
||
138 | int fd _AND |
||
139 | _CONST char *mode) |
||
140 | { |
||
141 | return _fdopen_r (_REENT, fd, mode); |
||
142 | } |
||
143 | |||
144 | #endif> |