(mu_tempname): New function. Creates a unique temporary file name in tmpdir.

2 files changed, 17 insertions, 1 deletions

diff --git a/include/mailutils/mutil.h b/include/mailutils/mutil.h
index c9dcc69d3..b89091f6f 100644
--- a/include/mailutils/mutil.h
+++ b/include/mailutils/mutil.h
@@ -96,6 +96,7 @@ extern char *mu_get_user_email __P ((const char *name));
 extern char *mu_normalize_path __P ((char *path, const char *delim));
 extern char *mu_normalize_maildir __P ((const char *dir));
 extern int mu_tempfile __P ((const char *tmpdir, char **namep));
+extern char *mu_tempname __P ((const char *tmpdir));
 
 extern char * mu_get_full_path __P((const char *file));
 extern char * mu_getcwd __P((void));
diff --git a/mailbox/mutil.c b/mailbox/mutil.c
index 4e23895ea..3312cdcb4 100644
--- a/mailbox/mutil.c
+++ b/mailbox/mutil.c
@@ -692,7 +692,7 @@ mu_normalize_maildir (const char *dir)
     }
 }
 
-/* Create and open a temporary file. Be vary careful about it, since we
+/* Create and open a temporary file. Be very careful about it, since we
    may be running with extra privilege i.e setgid().
    Returns file descriptor of the open file.
    If namep is not NULL, the pointer to the malloced file name will
@@ -748,6 +748,21 @@ mu_tempfile (const char *tmpdir, char **namep)
   return fd;
 }
 
+/* Create a unique temporary file name in tmpdir. The function
+   creates an empty file with this name to avoid possible race
+   conditions. Returns a pointer to the malloc'ed file name.
+   If tmpdir is NULL, the value of the environment variable
+   TMPDIR or the hardcoded P_tmpdir is used, whichever is defined. */
+
+char *
+mu_tempname (const char *tmpdir)
+{
+  char *filename = NULL;
+  int fd = mu_tempfile (tmpdir, &filename);
+  close (fd);
+  return filename;
+}
+
 /* See Advanced Programming in the UNIX Environment, Stevens,
  * program  10.20 for the rational for the signal handling. I
  * had to look it up, so if somebody else is curious, thats where