/*
* Make the given directory and its parents as necessary, using the
* given mode. Return true on success, false otherwise. Partial
* results are not cleaned up on errors.
*/
static bool
mkdir_recursive (const void *ctx, const char *path, int mode)
{
struct stat st;
int r;
char *parent = NULL, *slash;
/* First check the common case: directory already exists. */
r = stat (path, &st);
if (r == 0) {
if (! S_ISDIR (st.st_mode)) {
fprintf (stderr, "Error: '%s' is not a directory: %s\n",
path, strerror (EEXIST));
return false;
}
return true;
} else if (errno != ENOENT) {
fprintf (stderr, "Error: stat '%s': %s\n", path, strerror (errno));
return false;
}
/* mkdir parents, if any */
slash = strrchr (path, '/');
if (slash && slash != path) {
parent = talloc_strndup (ctx, path, slash - path);
if (! parent) {
fprintf (stderr, "Error: %s\n", strerror (ENOMEM));
return false;
}
if (! mkdir_recursive (ctx, parent, mode))
return false;
}
if (mkdir (path, mode)) {
fprintf (stderr, "Error: mkdir '%s': %s\n", path, strerror (errno));
return false;
}
return parent ? sync_dir (parent) : true;
}
/*
* Write fdin to a new file in maildir/new, using an intermediate temp
* file in maildir/tmp, return full path to the new file, or NULL on
* errors.
*/
static char *
maildir_write_new (const void *ctx, int fdin, const char *maildir)
{
char *cleanpath, *tmppath, *newpath, *newdir;
tmppath = maildir_write_tmp (ctx, fdin, maildir);
if (! tmppath)
return NULL;
cleanpath = tmppath;
newpath = talloc_strdup (ctx, tmppath);
if (! newpath) {
fprintf (stderr, "Error: %s\n", strerror (ENOMEM));
goto FAIL;
}
/* sanity checks needed? */
memcpy (newpath + strlen (maildir) + 1, "new", 3);
if (rename (tmppath, newpath)) {
fprintf (stderr, "Error: rename '%s' '%s': %s\n",
tmppath, newpath, strerror (errno));
goto FAIL;
}
cleanpath = newpath;
newdir = talloc_asprintf (ctx, "%s/%s", maildir, "new");
if (! newdir) {
fprintf (stderr, "Error: %s\n", strerror (ENOMEM));
goto FAIL;
}
if (! sync_dir (newdir))
goto FAIL;
return newpath;
FAIL:
unlink (cleanpath);
return NULL;
}
