]>
Commit | Line | Data |
---|---|---|
27114e20 | 1 | /* Open a stdio stream on an anonymous temporary file. Hurd version. |
04277e02 | 2 | Copyright (C) 2001-2019 Free Software Foundation, Inc. |
f8b87ef0 UD |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
f8b87ef0 UD |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
f8b87ef0 | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
28f540f4 | 18 | |
28f540f4 | 19 | #include <stdio.h> |
27114e20 RM |
20 | #include <hurd.h> |
21 | #include <hurd/fs.h> | |
891e44e5 | 22 | #include <hurd/fd.h> |
27114e20 | 23 | #include <fcntl.h> |
891e44e5 | 24 | #include <unistd.h> |
a1e50cbb | 25 | #include <iolibio.h> |
28f540f4 RM |
26 | |
27 | /* This returns a new stream opened on a temporary file (generated | |
7ce241a0 | 28 | by tmpnam). The file is opened with mode "w+b" (binary read/write). |
28f540f4 RM |
29 | If we couldn't generate a unique filename or the file couldn't |
30 | be opened, NULL is returned. */ | |
31 | FILE * | |
a1e50cbb | 32 | __tmpfile (void) |
28f540f4 | 33 | { |
27114e20 RM |
34 | error_t err; |
35 | file_t file; | |
891e44e5 | 36 | int fd; |
28f540f4 RM |
37 | FILE *f; |
38 | ||
27114e20 | 39 | /* Get a port to the directory that will contain the file. */ |
84b3fd84 | 40 | const char *dirname = __libc_secure_getenv ("TMPDIR") ?: P_tmpdir; |
27114e20 RM |
41 | file_t dir = __file_name_lookup (dirname, 0, 0); |
42 | if (dir == MACH_PORT_NULL) | |
28f540f4 RM |
43 | return NULL; |
44 | ||
27114e20 RM |
45 | /* Create an unnamed file in the temporary directory. */ |
46 | err = __dir_mkfile (dir, O_RDWR, S_IRUSR | S_IWUSR, &file); | |
47 | __mach_port_deallocate (__mach_task_self (), dir); | |
48 | if (err) | |
49 | return __hurd_fail (err), NULL; | |
7cabd57c | 50 | |
891e44e5 RM |
51 | /* Get a file descriptor for that port. POSIX.1 requires that streams |
52 | returned by tmpfile allocate file descriptors as fopen would. */ | |
53 | fd = _hurd_intern_fd (file, O_RDWR, 1); /* dealloc on error */ | |
54 | if (fd < 0) | |
55 | return NULL; | |
56 | ||
57 | /* Open a stream on the unnamed file. | |
27114e20 | 58 | It will cease to exist when this stream is closed. */ |
d18ea0c5 | 59 | if ((f = _IO_fdopen (fd, "w+b")) == NULL) |
891e44e5 | 60 | __close (fd); |
28f540f4 RM |
61 | |
62 | return f; | |
63 | } | |
7ce241a0 | 64 | |
a1e50cbb RM |
65 | #include <shlib-compat.h> |
66 | versioned_symbol (libc, __tmpfile, tmpfile, GLIBC_2_1); | |
337738b7 | 67 | |
a1e50cbb | 68 | weak_alias (__tmpfile, tmpfile64) |