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 "_stdio.h"
9
10
11 #ifdef __DO_UNLOCKED
12
fwrite_unlocked(const void * __restrict ptr,size_t size,size_t nmemb,register FILE * __restrict stream)13 size_t fwrite_unlocked(const void * __restrict ptr, size_t size,
14 size_t nmemb, register FILE * __restrict stream)
15 {
16 __STDIO_STREAM_VALIDATE(stream);
17
18 /* Note: If nmbem * size > SIZE_MAX then there is an application
19 * bug since no array can be larger than SIZE_MAX in size. */
20
21 if ((__STDIO_STREAM_IS_NARROW_WRITING(stream)
22 || !__STDIO_STREAM_TRANS_TO_WRITE(stream, __FLAG_NARROW))
23 && size && nmemb
24 ) {
25
26 if (nmemb <= (SIZE_MAX / size)) {
27 return __stdio_fwrite((const unsigned char *) ptr,
28 size*nmemb, stream) / size;
29 }
30
31 __STDIO_STREAM_SET_ERROR(stream);
32 __set_errno(EINVAL);
33 }
34
35 return 0;
36 }
37 libc_hidden_def(fwrite_unlocked)
38
39 #ifndef __UCLIBC_HAS_THREADS__
40 strong_alias(fwrite_unlocked,fwrite)
41 libc_hidden_def(fwrite)
42 #endif
43
44 #elif defined __UCLIBC_HAS_THREADS__
45
46 size_t fwrite(const void * __restrict ptr, size_t size,
47 size_t nmemb, register FILE * __restrict stream)
48 {
49 size_t retval;
50 __STDIO_AUTO_THREADLOCK_VAR;
51
52 __STDIO_AUTO_THREADLOCK(stream);
53
54 retval = fwrite_unlocked(ptr, size, nmemb, stream);
55
56 __STDIO_AUTO_THREADUNLOCK(stream);
57
58 return retval;
59 }
60 libc_hidden_def(fwrite)
61
62 #endif
63