diskutil: ensure we have enough room to not write past end

[fio.git] / diskutil.c

diff --git a/diskutil.c b/diskutil.c
index c34841a2af2c379b10b47b162ef79e99fd88a040..9767ea255c882a66511954472a2a9f70f56c5d41 100644 (file)
--- a/diskutil.c
+++ b/diskutil.c
@@ -18,8 +18,6 @@ static struct disk_util *last_du;
 
 static struct fio_mutex *disk_util_mutex;
 
-FLIST_HEAD(disk_list);
-
 static struct disk_util *__init_per_file_disk_util(struct thread_data *td,
                int majdev, int mindev, char *path);
 
@@ -365,7 +363,7 @@ static int find_block_dir(int majdev, int mindev, char *path, int link_ok)
                return 0;
 
        while ((dir = readdir(D)) != NULL) {
-               char full_path[256];
+               char full_path[257];
 
                if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
                        continue;
@@ -431,9 +429,6 @@ static struct disk_util *__init_per_file_disk_util(struct thread_data *td,
                sprintf(path, "%s", tmp);
        }
 
-       if (td->o.ioscheduler && !td->sysfs_root)
-               td->sysfs_root = strdup(path);
-
        return disk_util_add(td, majdev, mindev, path);
 }
 
@@ -452,12 +447,8 @@ static struct disk_util *init_per_file_disk_util(struct thread_data *td,
                        mindev);
 
        du = disk_util_exists(majdev, mindev);
-       if (du) {
-               if (td->o.ioscheduler && !td->sysfs_root)
-                       td->sysfs_root = strdup(du->sysfs_root);
-
+       if (du)
                return du;
-       }
 
        /*
         * for an fs without a device, we will repeatedly stat through