mirror of
git://sourceware.org/git/newlib-cygwin.git
synced 2025-01-15 19:09:58 +08:00
08146e5adb
* libc/stdio/fflush.c (_fflush_r): New function. (fflush): Fix reentrancy and large offset behavior. * libc/include/stdio.h (_fflush_r): Add prototype. * libc/stdio/fclose.c (_fclose_r): All fflush callers changed. * libc/stdio/freopen.c (_freopen_r): Likewise. * libc/stdio/fseek.c (_fseek_r): Likewise. * libc/stdio/ftell.c (_ftell_r): Likewise. * libc/stdio/fvwrite.c (__sfvwrite_r): Likewise. * libc/stdio/refill.c (__srefill_r): Likewise. * libc/stdio/setvbuf.c (setvbuf): Likewise. * libc/stdio/ungetc.c (_ungetc_r): Likewise. * libc/stdio/vfprintf.c (__sbprintf): Likewise. * libc/stdio/wbuf.c (__swbuf_r): Likewise. * libc/stdio64/freopen64.c (_freopen64_r): Likewise. * libc/stdio64/fseeko64.c (_fseeko64_r): Likewise. Defer to 32-bit version if not large file. * libc/stdio64/ftello64.c (_ftello64_r): Likewise. * libc/stdio64/tmpfile64.c (_tmpfile64_r): Avoid compile warning.
102 lines
2.1 KiB
C
102 lines
2.1 KiB
C
/*
|
|
FUNCTION
|
|
<<tmpfile64>>---create a large temporary file
|
|
|
|
INDEX
|
|
tmpfile64
|
|
INDEX
|
|
_tmpfile64_r
|
|
|
|
ANSI_SYNOPSIS
|
|
#include <stdio.h>
|
|
FILE *tmpfile64(void);
|
|
|
|
FILE *_tmpfile64_r(void *<[reent]>);
|
|
|
|
TRAD_SYNOPSIS
|
|
#include <stdio.h>
|
|
FILE *tmpfile64();
|
|
|
|
FILE *_tmpfile64_r(<[reent]>)
|
|
char *<[reent]>;
|
|
|
|
DESCRIPTION
|
|
Create a large temporary file (a file which will be deleted automatically),
|
|
using a name generated by <<tmpnam>>. The temporary file is opened with
|
|
the mode <<"wb+">>, permitting you to read and write anywhere in it
|
|
as a binary file (without any data transformations the host system may
|
|
perform for text files). The file may be larger than 2GB.
|
|
|
|
The alternate function <<_tmpfile64_r>> is a reentrant version. The
|
|
argument <[reent]> is a pointer to a reentrancy structure.
|
|
|
|
Both <<tmpfile64>> and <<_tmpfile64_r>> are only defined if __LARGE64_FILES
|
|
is defined.
|
|
|
|
RETURNS
|
|
<<tmpfile64>> normally returns a pointer to the temporary file. If no
|
|
temporary file could be created, the result is NULL, and <<errno>>
|
|
records the reason for failure.
|
|
|
|
PORTABILITY
|
|
<<tmpfile64>> is a glibc extension.
|
|
|
|
Supporting OS subroutines required: <<close>>, <<fstat>>, <<getpid>>,
|
|
<<isatty>>, <<lseek64>>, <<open64>>, <<read>>, <<sbrk>>, <<write>>.
|
|
|
|
<<tmpfile64>> also requires the global pointer <<environ>>.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <reent.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <sys/stat.h>
|
|
|
|
#ifndef O_BINARY
|
|
# define O_BINARY 0
|
|
#endif
|
|
|
|
#ifdef __LARGE64_FILES
|
|
|
|
FILE *
|
|
_DEFUN (_tmpfile64_r, (ptr),
|
|
struct _reent *ptr)
|
|
{
|
|
FILE *fp;
|
|
int e;
|
|
char *f;
|
|
char buf[L_tmpnam];
|
|
int fd;
|
|
|
|
do
|
|
{
|
|
if ((f = _tmpnam_r (ptr, buf)) == NULL)
|
|
return NULL;
|
|
fd = _open64_r (ptr, f, O_RDWR | O_CREAT | O_EXCL | O_BINARY,
|
|
S_IRUSR | S_IWUSR);
|
|
}
|
|
while (fd < 0 && ptr->_errno == EEXIST);
|
|
if (fd < 0)
|
|
return NULL;
|
|
fp = _fdopen64_r (ptr, fd, "wb+");
|
|
e = ptr->_errno;
|
|
if (!fp)
|
|
_close_r (ptr, fd);
|
|
_CAST_VOID _remove_r (ptr, f);
|
|
ptr->_errno = e;
|
|
return fp;
|
|
}
|
|
|
|
#ifndef _REENT_ONLY
|
|
|
|
FILE *
|
|
_DEFUN_VOID (tmpfile64)
|
|
{
|
|
return _tmpfile64_r (_REENT);
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif /* __LARGE64_FILES */
|