loop: correct minor device number limit

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

diff --git a/libbb/loop.c b/libbb/loop.c
index 204fcc982bc94c197ad4619acd8d533d6053e40d..b69d9d96134cabc066f25ca5886ab8a72c04c81c 100644 (file)
--- a/libbb/loop.c
+++ b/libbb/loop.c
@@ -104,7 +104,8 @@ int FAST_FUNC set_loop(char **device, const char *file, unsigned long long offse
 
        /* Find a loop device.  */
        try = *device ? *device : dev;
-       for (i = 0; rc && i < 256; i++) {
+       /* 1048575 is a max possible minor number in Linux circa 2010 */
+       for (i = 0; rc && i < 1048576; i++) {
                sprintf(dev, LOOP_FORMAT, i);
 
                IF_FEATURE_MOUNT_LOOP_CREATE(errno = 0;)