mirror of
git://uclibc.org/uClibc.git
synced 2026-01-26 16:29:44 +08:00
21730caa66
sed -i -e '/Experimentally off - /d' $(grep -rl "Experimentally off - " *) sed -i -e '/^\/\*[[:space:]]*libc_hidden_proto(/d' $(grep -rl "libc_hidden_proto" *) should be a nop Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
113 lines
2.5 KiB
C
113 lines
2.5 KiB
C
/* Copyright (C) 2004 Manuel Novoa III <mjn3@codepoet.org>
|
|
*
|
|
* GNU Library General Public License (LGPL) version 2 or later.
|
|
*
|
|
* Dedicated to Toni. See uClibc/DEDICATION.mjn3 for details.
|
|
*/
|
|
|
|
#include "_stdio.h"
|
|
|
|
|
|
#ifdef __DO_UNLOCKED
|
|
|
|
|
|
size_t fread_unlocked(void * __restrict ptr, size_t size, size_t nmemb,
|
|
FILE * __restrict stream)
|
|
{
|
|
__STDIO_STREAM_VALIDATE(stream);
|
|
assert(stream->__filedes >= -1);
|
|
|
|
/* Note: If nmbem * size > SIZE_MAX then there is an application
|
|
* bug since no array can be larger than SIZE_MAX in size. */
|
|
|
|
if ((__STDIO_STREAM_IS_NARROW_READING(stream)
|
|
|| !__STDIO_STREAM_TRANS_TO_READ(stream, __FLAG_NARROW))
|
|
&& size && nmemb
|
|
) {
|
|
|
|
if (nmemb <= (SIZE_MAX / size)) {
|
|
unsigned char *buffer = (unsigned char *) ptr;
|
|
size_t todo, bytes, avail;
|
|
|
|
todo = bytes = size * nmemb;
|
|
|
|
/* Check for ungots... */
|
|
while (stream->__modeflags & __FLAG_UNGOT) {
|
|
*buffer++ = stream->__ungot[(stream->__modeflags--) & 1];
|
|
stream->__ungot[1] = 0;
|
|
if (!--todo) {
|
|
goto DONE;
|
|
}
|
|
}
|
|
|
|
#ifdef __STDIO_BUFFERS
|
|
/* Next check for available buffered... */
|
|
if ((avail = stream->__bufread - stream->__bufpos) > 0) {
|
|
if (avail > todo) {
|
|
avail = todo;
|
|
}
|
|
memcpy(buffer, stream->__bufpos, avail);
|
|
buffer += avail;
|
|
stream->__bufpos += avail;
|
|
if (!(todo -= avail)) {
|
|
goto DONE;
|
|
}
|
|
}
|
|
|
|
/* We need to read from the host environment, so we must
|
|
* flush all line buffered streams if the stream is not
|
|
* fully buffered. */
|
|
if (!__STDIO_STREAM_IS_FBF(stream)) {
|
|
__STDIO_FLUSH_LBF_STREAMS;
|
|
}
|
|
#endif
|
|
|
|
#ifdef __UCLIBC_MJN3_ONLY__
|
|
#warning CONSIDER: should we refill and read from the buffer sometimes?
|
|
#endif
|
|
while ((avail = __stdio_READ(stream, buffer, todo)) > 0) {
|
|
buffer += avail;
|
|
if (!(todo -= avail)) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
DONE:
|
|
__STDIO_STREAM_VALIDATE(stream);
|
|
return (bytes - todo) / size;
|
|
}
|
|
|
|
__STDIO_STREAM_SET_ERROR(stream);
|
|
__set_errno(EINVAL);
|
|
}
|
|
|
|
__STDIO_STREAM_VALIDATE(stream);
|
|
return 0;
|
|
}
|
|
libc_hidden_def(fread_unlocked)
|
|
|
|
#ifndef __UCLIBC_HAS_THREADS__
|
|
strong_alias(fread_unlocked,fread)
|
|
libc_hidden_def(fread)
|
|
#endif
|
|
|
|
#elif defined __UCLIBC_HAS_THREADS__
|
|
|
|
size_t fread(void * __restrict ptr, size_t size, size_t nmemb,
|
|
register FILE * __restrict stream)
|
|
{
|
|
size_t retval;
|
|
__STDIO_AUTO_THREADLOCK_VAR;
|
|
|
|
__STDIO_AUTO_THREADLOCK(stream);
|
|
|
|
retval = fread_unlocked(ptr, size, nmemb, stream);
|
|
|
|
__STDIO_AUTO_THREADUNLOCK(stream);
|
|
|
|
return retval;
|
|
}
|
|
libc_hidden_def(fread)
|
|
|
|
#endif
|