X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fdata%2Fmake-file.h;h=3861f35109af866978b5938d0bbc34389e6c059b;hb=7235f7f42b61c2b111174c3ee5ca72aac8815cd5;hp=30366143c8dd50a24bb09eb03021ee9d99b185c9;hpb=480a0746507ce73d26f528b56dc3ed80195096e0;p=pspp
diff --git a/src/data/make-file.h b/src/data/make-file.h
index 30366143c8..3861f35109 100644
--- a/src/data/make-file.h
+++ b/src/data/make-file.h
@@ -1,34 +1,50 @@
-/* PSPP - computes sample statistics.
- Copyright (C) 2004 Free Software Foundation, Inc.
+/* PSPP - a program for statistical analysis.
+ Copyright (C) 2004, 2010 Free Software Foundation, Inc.
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
- This program 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
- General Public License for more details.
+ This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- 02110-1301, USA. */
-
-#ifndef MKFILE_H
-#define MKFILE_H
-
-
-/* Creates a temporary file and stores its name in *FILE_NAME and
- a file descriptor for it in *FD. Returns success. Caller is
- responsible for freeing *FILE_NAME. */
-int make_temp_file (int *fd, char **file_name);
-
-
-/* Creates a temporary file and stores its name in *FILE_NAME and
- a file stream for it in *FP. Returns success. Caller is
- responsible for freeing *FILE_NAME. */
-int make_unique_file_stream (FILE **fp, char **file_name) ;
+ along with this program. If not, see . */
+
+#ifndef MAKE_FILE_H
+#define MAKE_FILE_H
+
+#include
+#include
+#include
+
+/* Prepares to atomically replace a (potentially) existing file
+ by a new file, by creating a temporary file with the given
+ PERMISSIONS bits in the same directory as *FILE_NAME.
+
+ Special files are an exception: they are not atomically
+ replaced but simply opened for writing.
+
+ If successful, stores the temporary file's name in *TMP_NAME
+ and a stream for it opened according to MODE (which should be
+ "w" or "wb") in *FP. Returns a ticket that can be used to
+ commit or abort the file replacement. If neither action has
+ yet been taken, program termination via signal will cause
+ *TMP_FILE to be unlinked.
+
+ The caller is responsible for closing *FP, but *TMP_NAME is
+ owned by the callee. */
+struct replace_file *replace_file_start (const char *file_name,
+ const char *mode, mode_t permissions,
+ FILE **fp, char **tmp_name);
+
+/* Commits or aborts the replacement of a (potentially) existing
+ file by a new file, using the ticket returned by
+ replace_file_start. Returns success. */
+bool replace_file_commit (struct replace_file *);
+bool replace_file_abort (struct replace_file *);
#endif /* make-file.h */