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https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk
Subversion Repositories openrisc_2011-10-31
[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [stdio/] [tmpfile.c] - Rev 540
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/* FUNCTION <<tmpfile>>---create a temporary file INDEX tmpfile INDEX _tmpfile_r ANSI_SYNOPSIS #include <stdio.h> FILE *tmpfile(void); FILE *_tmpfile_r(struct _reent *<[reent]>); TRAD_SYNOPSIS #include <stdio.h> FILE *tmpfile(); FILE *_tmpfile_r(<[reent]>) struct _reent *<[reent]>; DESCRIPTION Create a 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 alternate function <<_tmpfile_r>> is a reentrant version. The argument <[reent]> is a pointer to a reentrancy structure. RETURNS <<tmpfile>> 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 Both ANSI C and the System V Interface Definition (Issue 2) require <<tmpfile>>. Supporting OS subroutines required: <<close>>, <<fstat>>, <<getpid>>, <<isatty>>, <<lseek>>, <<open>>, <<read>>, <<sbrk>>, <<write>>. <<tmpfile>> also requires the global pointer <<environ>>. */ #include <_ansi.h> #include <reent.h> #include <stdio.h> #include <errno.h> #include <fcntl.h> #include <sys/stat.h> #ifndef O_BINARY # define O_BINARY 0 #endif FILE * _DEFUN(_tmpfile_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 = _open_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 = _fdopen_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(tmpfile) { return _tmpfile_r (_REENT); } #endif
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