From 27114e2046a5d8b89c2e84bdcc53c42f7381c700 Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Tue, 13 Nov 2001 10:07:33 +0000 Subject: * stdio-common/tmpfile.c: Moved to ... * sysdeps/generic/tmpfile.c: ... here. * sysdeps/mach/hurd/tmpfile.c: New file. * hurd/fopenport.c (__fopenport): Renamed from fopenport. [USE_IN_LIBIO] (fopencookie): #define as _IO_fopencookie. (fopenport): Define as weak alias. * libio/iofopncook.c (_IO_fopencookie): Move forward declaration ... * libio/libioP.h: ... to here. --- sysdeps/generic/tmpfile.c | 60 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 sysdeps/generic/tmpfile.c (limited to 'sysdeps/generic') diff --git a/sysdeps/generic/tmpfile.c b/sysdeps/generic/tmpfile.c new file mode 100644 index 0000000000..6d341d63e5 --- /dev/null +++ b/sysdeps/generic/tmpfile.c @@ -0,0 +1,60 @@ +/* Open a stdio stream on an anonymous temporary file. Generic/POSIX version. + Copyright (C) 1991,93,96,97,98,99,2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#include + +#ifdef USE_IN_LIBIO +# include +# define __fdopen _IO_fdopen +# define tmpfile __new_tmpfile +#endif + +/* This returns a new stream opened on a temporary file (generated + by tmpnam). The file is opened with mode "w+b" (binary read/write). + If we couldn't generate a unique filename or the file couldn't + be opened, NULL is returned. */ +FILE * +tmpfile (void) +{ + char buf[FILENAME_MAX]; + int fd; + FILE *f; + + if (__path_search (buf, FILENAME_MAX, NULL, "tmpf", 0)) + return NULL; + fd = __gen_tempname (buf, __GT_FILE); + if (fd < 0) + return NULL; + + /* Note that this relies on the Unix semantics that + a file is not really removed until it is closed. */ + (void) remove (buf); + + if ((f = __fdopen (fd, "w+b")) == NULL) + __close (fd); + + return f; +} + +#ifdef USE_IN_LIBIO +# undef tmpfile +# include +versioned_symbol (libc, __new_tmpfile, tmpfile, GLIBC_2_1); +#endif -- cgit 1.4.1