[PATCH v1 1/2] part: Add a function to find ESP partition

mchitale at ventanamicro.com mchitale at ventanamicro.com
Thu Sep 21 13:35:01 CEST 2023


On Thu, 2023-09-14 at 12:29 -0400, Tom Rini wrote:
> On Thu, Sep 14, 2023 at 03:38:20PM +0530, Mayuresh Chitale wrote:
> > If a disk has an EFI system partition (ESP) then it can be used to
> > locate the boot files. Add a function to find the ESP.
> > 
> > Signed-off-by: Mayuresh Chitale <mchitale at ventanamicro.com>
> > Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt at canonical.com
> > >
> > ---
> >  disk/part.c    | 16 ++++++++++++++++
> >  include/part.h | 10 ++++++++++
> >  2 files changed, 26 insertions(+)
> > 
> > diff --git a/disk/part.c b/disk/part.c
> > index 72241b7b23..2be0866671 100644
> > --- a/disk/part.c
> > +++ b/disk/part.c
> > @@ -841,3 +841,19 @@ int part_get_bootable(struct blk_desc *desc)
> >  
> >  	return 0;
> >  }
> > +
> > +int part_get_esp(struct blk_desc *desc)
> > +{
> > +	struct disk_partition info;
> > +	int p;
> > +
> > +	for (p = 1; p <= MAX_SEARCH_PARTITIONS; p++) {
> > +		int ret;
> > +
> > +		ret = part_get_info(desc, p, &info);
> > +		if (!ret && (info.bootable &
> > PART_EFI_SYSTEM_PARTITION))
> > +			return p;
> > +	}
> > +
> > +	return 0;
> > +}
> > diff --git a/include/part.h b/include/part.h
> > index db34bc6bb7..036f9fd762 100644
> > --- a/include/part.h
> > +++ b/include/part.h
> > @@ -689,6 +689,13 @@ int part_get_type_by_name(const char *name);
> >   * @return first bootable partition, or 0 if there is none
> >   */
> >  int part_get_bootable(struct blk_desc *desc);
> > +/**
> 
> Missing blank line?
> 
Ok, I will add it.



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