1 /* Copyright (C) 2004 Manuel Novoa III <mjn3@codepoet.org>
2 *
3 * GNU Library General Public License (LGPL) version 2 or later.
4 *
5 * Dedicated to Toni. See uClibc/DEDICATION.mjn3 for details.
6 */
7
8 #include <features.h>
9
10 #ifdef __USE_GNU
11 #include "_stdio.h"
12 #include <stdarg.h>
13
14
vdprintf(int filedes,const char * __restrict format,va_list arg)15 int vdprintf(int filedes, const char * __restrict format, va_list arg)
16 {
17 FILE f;
18 int rv;
19 #ifdef __STDIO_BUFFERS
20 char buf[64]; /* TODO: provide _optional_ buffering? */
21
22 f.__bufend = (unsigned char *) buf + sizeof(buf);
23 f.__bufstart = (unsigned char *) buf;
24 __STDIO_STREAM_DISABLE_GETC(&f);
25 __STDIO_STREAM_DISABLE_PUTC(&f);
26 __STDIO_STREAM_INIT_BUFREAD_BUFPOS(&f);
27 #endif
28
29 /* __STDIO_STREAM_RESET_GCS(&f); */
30 #ifdef __UCLIBC_HAS_GLIBC_CUSTOM_STREAMS__
31 f.__cookie = &(f.__filedes);
32 f.__gcs.read = NULL;
33 f.__gcs.write = _cs_write;
34 f.__gcs.seek = NULL;
35 f.__gcs.close = NULL;
36 #endif
37
38 f.__filedes = filedes;
39 f.__modeflags = (__FLAG_NARROW|__FLAG_WRITEONLY|__FLAG_WRITING);
40
41 #ifdef __UCLIBC_HAS_WCHAR__
42 f.__ungot_width[0] = 0;
43 #endif
44 #ifdef __STDIO_MBSTATE
45 __INIT_MBSTATE(&(f.__state));
46 #endif
47
48 /* _vfprintf_internal doesn't do any locking, locking init is here
49 * only because of fflush_unlocked. TODO? */
50 #if (defined(__STDIO_BUFFERS) || defined(__USE_OLD_VFPRINTF__)) && defined(__UCLIBC_HAS_THREADS__)
51 f.__user_locking = 1; /* Set user locking. */
52 STDIO_INIT_MUTEX(f.__lock);
53 #endif
54 f.__nextopen = NULL;
55
56 #ifdef __USE_OLD_VFPRINTF__
57 rv = vfprintf(&f, format, arg);
58 #else
59 rv = _vfprintf_internal(&f, format, arg);
60 #endif
61
62 #ifdef __STDIO_BUFFERS
63 /* If not buffering, then fflush is unnecessary. */
64 if ((rv > 0) && fflush_unlocked(&f)) {
65 rv = -1;
66 }
67 #endif
68
69 assert(rv >= -1);
70
71 return rv;
72 }
73 libc_hidden_def(vdprintf)
74 #endif
75