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[PATCH] grub-install: Improve support for partitioned loop devices.


From: Mike Gilbert
Subject: [PATCH] grub-install: Improve support for partitioned loop devices.
Date: Sat, 25 Jan 2014 20:41:00 -0500

* grub-core/osdep/linux/getroot.c (grub_util_part_to_disk): Detect
/dev/loopX as being the parent of /dev/loopXpY.
---
 ChangeLog                       |  5 +++++
 grub-core/osdep/linux/getroot.c | 13 +++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index c93f11f..d5c5c3c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2014-01-26  Mike Gilbert <address@hidden>
+       grub-install: Improve support for partitioned loop devices.
+
+       * grub-core/osdep/linux/getroot.c (grub_util_part_to_disk): Detect
+       /dev/loopX as being the parent of /dev/loopXpY.
 
 2014-01-25  Andrey Borzenkov <address@hidden>
 
diff --git a/grub-core/osdep/linux/getroot.c b/grub-core/osdep/linux/getroot.c
index 772de0a..19581d3 100644
--- a/grub-core/osdep/linux/getroot.c
+++ b/grub-core/osdep/linux/getroot.c
@@ -883,6 +883,19 @@ grub_util_part_to_disk (const char *os_dev, struct stat 
*st,
          *pp = '\0';
          return path;
        }
+
+      /* If this is a loop device */
+      if ((strncmp ("loop", p, 4) == 0) && p[4] >= '0' && p[4] <= '9')
+       {
+         char *pp = p + 4;
+         while (*pp >= '0' && *pp <= '9')
+           pp++;
+         if (*pp == 'p')
+           *is_part = 1;
+         /* /dev/loop[0-9]+p[0-9]* */
+         *pp = '\0';
+         return path;
+       }
     }
 
   return path;
-- 
1.8.5.3




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