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Re: [PATCH] grub-install: Improve support for partitioned loop devices.
From: |
Andrey Borzenkov |
Subject: |
Re: [PATCH] grub-install: Improve support for partitioned loop devices. |
Date: |
Sun, 26 Jan 2014 09:16:53 +0400 |
В Sat, 25 Jan 2014 20:41:00 -0500
Mike Gilbert <address@hidden> пишет:
> * grub-core/osdep/linux/getroot.c (grub_util_part_to_disk): Detect
> /dev/loopX as being the parent of /dev/loopXpY.
Those devices are normally device-mapper ones (created by kpartx) and
grub already detects parent by following device-mapper tree. What
exact problem are you trying to solve?
> ---
> 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;