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0c1992fb | 1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>\r | |
4 | This program and the accompanying materials are licensed and made available under\r | |
5 | the terms and conditions of the BSD License that accompanies this distribution.\r | |
6 | The full text of the license may be found at\r | |
7 | http://opensource.org/licenses/bsd-license.\r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
2aa62f2b | 11 | \r |
2aa62f2b | 12 | * Copyright (c) 1990, 1993\r |
13 | * The Regents of the University of California. All rights reserved.\r | |
14 | *\r | |
15 | * This code is derived from software contributed to Berkeley by\r | |
16 | * Chris Torek.\r | |
17 | *\r | |
18 | * Redistribution and use in source and binary forms, with or without\r | |
19 | * modification, are permitted provided that the following conditions\r | |
20 | * are met:\r | |
21 | * 1. Redistributions of source code must retain the above copyright\r | |
22 | * notice, this list of conditions and the following disclaimer.\r | |
23 | * 2. Redistributions in binary form must reproduce the above copyright\r | |
24 | * notice, this list of conditions and the following disclaimer in the\r | |
25 | * documentation and/or other materials provided with the distribution.\r | |
26 | * 3. Neither the name of the University nor the names of its contributors\r | |
27 | * may be used to endorse or promote products derived from this software\r | |
28 | * without specific prior written permission.\r | |
29 | *\r | |
30 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND\r | |
31 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r | |
32 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r | |
33 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE\r | |
34 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r | |
35 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\r | |
36 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r | |
37 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r | |
38 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r | |
39 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r | |
40 | * SUCH DAMAGE.\r | |
0c1992fb | 41 | \r |
42 | NetBSD: fdopen.c,v 1.14 2003/08/07 16:43:22 agc Exp\r | |
43 | fdopen.c 8.1 (Berkeley) 6/4/93\r | |
44 | **/\r | |
2aa62f2b | 45 | #include <LibConfig.h>\r |
46 | #include <sys/EfiCdefs.h>\r | |
2aa62f2b | 47 | \r |
48 | #include "namespace.h"\r | |
49 | #include <sys/types.h>\r | |
50 | \r | |
51 | #include <assert.h>\r | |
52 | #include <errno.h>\r | |
53 | #include <fcntl.h>\r | |
2aa62f2b | 54 | #include <stdio.h>\r |
0c1992fb | 55 | #include <unistd.h>\r |
2aa62f2b | 56 | \r |
57 | #include "reentrant.h"\r | |
58 | #include "local.h"\r | |
59 | \r | |
60 | #ifdef __weak_alias\r | |
61 | __weak_alias(fdopen,_fdopen)\r | |
62 | #endif\r | |
63 | \r | |
64 | FILE *\r | |
65 | fdopen(int fd, const char *mode)\r | |
66 | {\r | |
67 | FILE *fp;\r | |
68 | int flags, oflags, fdflags, tmp;\r | |
69 | \r | |
70 | _DIAGASSERT(fd != -1);\r | |
71 | \r | |
72 | if ((flags = __sflags(mode, &oflags)) == 0)\r | |
73 | return (NULL);\r | |
74 | \r | |
75 | /* Make sure the mode the user wants is a subset of the actual mode. */\r | |
76 | if ((fdflags = fcntl(fd, F_GETFL, 0)) < 0)\r | |
77 | return (NULL);\r | |
78 | tmp = fdflags & O_ACCMODE;\r | |
79 | if (tmp != O_RDWR && (tmp != (oflags & O_ACCMODE))) {\r | |
80 | errno = EINVAL;\r | |
81 | return (NULL);\r | |
82 | }\r | |
83 | \r | |
84 | if (oflags & O_NONBLOCK) {\r | |
85 | struct stat st;\r | |
86 | if (fstat(fd, &st) == -1) {\r | |
87 | return (NULL);\r | |
88 | }\r | |
89 | if (!S_ISREG(st.st_mode)) {\r | |
90 | errno = EFTYPE;\r | |
91 | return (NULL);\r | |
92 | }\r | |
93 | }\r | |
94 | \r | |
95 | if ((fp = __sfp()) == NULL)\r | |
96 | return (NULL);\r | |
97 | fp->_flags = (unsigned short)flags;\r | |
98 | /*\r | |
99 | * If opened for appending, but underlying descriptor does not have\r | |
100 | * O_APPEND bit set, assert __SAPP so that __swrite() will lseek to\r | |
101 | * end before each write.\r | |
102 | */\r | |
103 | if ((oflags & O_APPEND) && !(fdflags & O_APPEND))\r | |
104 | fp->_flags |= __SAPP;\r | |
105 | fp->_file = (short)fd;\r | |
106 | fp->_cookie = fp;\r | |
107 | fp->_read = __sread;\r | |
108 | fp->_write = __swrite;\r | |
109 | fp->_seek = __sseek;\r | |
110 | fp->_close = __sclose;\r | |
111 | return (fp);\r | |
112 | }\r |