register_tempfile(): new function to handle an existing temporary file

Allow an existing file to be registered with the tempfile-handling infrastructure; in particular, arrange for it to be deleted on program exit. This can be used if the temporary file has to be created in a more complicated way than just open(). For example: * If the file itself needs to be created via the lockfile API * If it is not a regular file (e.g., a socket) Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Michael Haggerty committed Aug 10, 2015 at 11:47 UTC 99397152a345011c99497b93f8518c7981e811a5
2 files changed +16
tempfile.c
+8
@@ -137,6 +137,14 @@ int create_tempfile(struct tempfile *tempfile, const char *path)
137 return tempfile->fd;
138 }
139
140 +void register_tempfile(struct tempfile *tempfile, const char *path)
141 +{
142 + prepare_tempfile_object(tempfile);
143 + strbuf_add_absolute_path(&tempfile->filename, path);
144 + tempfile->owner = getpid();
145 + tempfile->active = 1;
146 +}
147 +
148 int mks_tempfile_sm(struct tempfile *tempfile,
149 const char *template, int suffixlen, int mode)
150 {
tempfile.h
+8
@@ -92,6 +92,14 @@ struct tempfile {
92 */
93 extern int create_tempfile(struct tempfile *tempfile, const char *path);
94
95 +/*
96 + * Register an existing file as a tempfile, meaning that it will be
97 + * deleted when the program exits. The tempfile is considered closed,
98 + * but it can be worked with like any other closed tempfile (for
99 + * example, it can be opened using reopen_tempfile()).
100 + */
101 +extern void register_tempfile(struct tempfile *tempfile, const char *path);
102 +
103
104 /*
105 * mks_tempfile functions