Add a helper for /dev/block/major:minor paths

2017-11-30 12:59:23 +01:00
parent 553e15f21b
commit c67f84b025
3 changed files with 17 additions and 15 deletions
@@ -33,3 +33,8 @@ int whitelisted_char_for_devnode(char c, const char *additional);
        (strlen("/sys/dev/block/") + DECIMAL_STR_MAX(dev_t) + 1 + DECIMAL_STR_MAX(dev_t) + strlen_ptr(suffix))
 #define xsprintf_sys_block_path(buf, suffix, devno)                     \
        xsprintf(buf, "/sys/dev/block/%u:%u%s", major(devno), minor(devno), strempty(suffix))
+
+#define DEV_NUM_PATH_MAX                                                \
+        (strlen("/dev/block/") + DECIMAL_STR_MAX(dev_t) + 1 + DECIMAL_STR_MAX(dev_t))
+#define xsprintf_dev_num_path(buf, type, devno)                         \
+        xsprintf(buf, "/dev/%s/%u:%u", type, major(devno), minor(devno))