basestr.c
2.88 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2010, 2011 Free Software Foundation, Inc.
This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with GNU Mailutils. If not, see <http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <unistd.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <mailutils/types.h>
#include <mailutils/errno.h>
#include <mailutils/log.h>
#include <mailutils/stream.h>
#include <mailutils/stdstream.h>
#include <mailutils/util.h>
mu_stream_t mu_strin;
mu_stream_t mu_strout;
mu_stream_t mu_strerr;
static void
stdstream_flushall (void *data MU_ARG_UNUSED)
{
mu_stream_flush (mu_strin);
mu_stream_flush (mu_strout);
mu_stream_flush (mu_strerr);
}
void
mu_stdstream_setup ()
{
int rc;
int fd;
int yes = 1;
/* If the streams are already open, close them */
mu_stream_destroy (&mu_strin);
mu_stream_destroy (&mu_strout);
mu_stream_destroy (&mu_strerr);
/* Ensure that first 3 descriptors are open in proper mode */
fd = open ("/dev/null", O_RDWR);
switch (fd)
{
case 0:
/* Keep it and try to open 1 */
fd = open ("/dev/null", O_WRONLY);
if (fd != 1)
{
if (fd > 2)
close (fd);
break;
}
case 1:
/* keep it open and try 2 */
fd = open ("/dev/null", O_WRONLY);
if (fd != 2)
close (fd);
break;
case 2:
/* keep it open */;
break;
default:
close (fd);
break;
}
/* Create the corresponding streams */
rc = mu_stdio_stream_create (&mu_strin, MU_STDIN_FD, 0);
if (rc)
{
fprintf (stderr, "mu_stdio_stream_create(%d): %s\n",
MU_STDIN_FD, mu_strerror (rc));
abort ();
}
mu_stream_ioctl (mu_strin, MU_IOCTL_FD, MU_IOCTL_FD_SET_BORROW, &yes);
rc = mu_stdio_stream_create (&mu_strout, MU_STDOUT_FD, 0);
if (rc)
{
fprintf (stderr, "mu_stdio_stream_create(%d): %s\n",
MU_STDOUT_FD, mu_strerror (rc));
abort ();
}
mu_stream_ioctl (mu_strout, MU_IOCTL_FD, MU_IOCTL_FD_SET_BORROW, &yes);
if (mu_stdstream_strerr_create (&mu_strerr, MU_STRERR_STDERR, 0, 0,
mu_program_name, NULL))
abort ();
mu_onexit (stdstream_flushall, NULL);
}
int
mu_printf (const char *fmt, ...)
{
int rc;
va_list ap;
va_start (ap, fmt);
rc = mu_stream_vprintf (mu_strout, fmt, ap);
va_end (ap);
return rc;
}