[PATCH 07/14] register_tempfile(): new function to handle an existing temporary file

[Michael Haggerty <mhagger@alum.mit.edu>]

Allow an existing file to be registered with the tempfile-handling
infrastructure; in particular, arrange for it to be deleted on program
exit.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
---
 tempfile.c | 9 +++++++++
 tempfile.h | 8 ++++++++
 2 files changed, 17 insertions(+)

diff --git a/tempfile.c b/tempfile.c
index 890075f..235fc85 100644
--- a/tempfile.c
+++ b/tempfile.c
@@ -82,6 +82,15 @@ int create_tempfile(struct tempfile *tempfile, const char *path)
 	return tempfile->fd;
 }
 
+void register_tempfile(struct tempfile *tempfile, const char *path)
+{
+	register_tempfile_object(tempfile, path);
+
+	strbuf_add_absolute_path(&tempfile->filename, path);
+	tempfile->owner = getpid();
+	tempfile->active = 1;
+}
+
 int mks_tempfile_sm(struct tempfile *tempfile,
 		    const char *template, int suffixlen, int mode)
 {
diff --git a/tempfile.h b/tempfile.h
index 6276156..18ff963 100644
--- a/tempfile.h
+++ b/tempfile.h
@@ -145,6 +145,14 @@ struct tempfile {
  */
 extern int create_tempfile(struct tempfile *tempfile, const char *path);
 
+/*
+ * Register an existing file as a tempfile, meaning that it will be
+ * deleted when the program exits. The tempfile is considered closed,
+ * but it can be worked with like any other closed tempfile (for
+ * example, it can be opened using reopen_tempfile()).
+ */
+extern void register_tempfile(struct tempfile *tempfile, const char *path);
+
 
 /*
  * mks_tempfile functions
-- 
2.1.4