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ieee1275: split up grub_machine_get_bootlocation

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Split up some of the functionality in grub_machine_get_bootlocation into
grub_ieee1275_get_boot_dev.  This will allow for code reuse in a follow on
patch.

Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Eric Snowberg 2018-03-08 20:42:22 -08:00 committed by Daniel Kiper
parent c225298038
commit e2faabacff
3 changed files with 31 additions and 18 deletions
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20
grub-core/kern/ieee1275/init.c
View file

@ -94,28 +94,12 @@ void
grub_machine_get_bootlocation (char **device, char **path)
{
char *bootpath;
grub_ssize_t bootpath_size;
char *filename;
char *type;
if (grub_ieee1275_get_property_length (grub_ieee1275_chosen, "bootpath",
&bootpath_size)
|| bootpath_size <= 0)
{
/* Should never happen. */
grub_printf ("/chosen/bootpath property missing!\n");
return;
}
bootpath = (char *) grub_malloc ((grub_size_t) bootpath_size + 64);
bootpath = grub_ieee1275_get_boot_dev ();
if (! bootpath)
{
grub_print_error ();
return;
}
grub_ieee1275_get_property (grub_ieee1275_chosen, "bootpath", bootpath,
(grub_size_t) bootpath_size + 1, 0);
bootpath[bootpath_size] = '\0';
return;
/* Transform an OF device path to a GRUB path. */

27
grub-core/kern/ieee1275/openfw.c
View file

@ -561,3 +561,30 @@ grub_ieee1275_canonicalise_devname (const char *path)
return NULL;
}
char *
grub_ieee1275_get_boot_dev (void)
{
char *bootpath;
grub_ssize_t bootpath_size;
if (grub_ieee1275_get_property_length (grub_ieee1275_chosen, "bootpath",
&bootpath_size)
|| bootpath_size <= 0)
{
/* Should never happen. */
grub_printf ("/chosen/bootpath property missing!\n");
return NULL;
}
bootpath = (char *) grub_malloc ((grub_size_t) bootpath_size + 64);
if (! bootpath)
{
grub_print_error ();
return NULL;
}
grub_ieee1275_get_property (grub_ieee1275_chosen, "bootpath", bootpath,
(grub_size_t) bootpath_size + 1, 0);
bootpath[bootpath_size] = '\0';
return bootpath;
}

2
include/grub/ieee1275/ieee1275.h
View file

@ -253,6 +253,8 @@ void EXPORT_FUNC(grub_ieee1275_children_peer) (struct grub_ieee1275_devalias *al
void EXPORT_FUNC(grub_ieee1275_children_first) (const char *devpath,
struct grub_ieee1275_devalias *alias);
char *EXPORT_FUNC(grub_ieee1275_get_boot_dev) (void);
#define FOR_IEEE1275_DEVALIASES(alias) for (grub_ieee1275_devalias_init_iterator (&(alias)); grub_ieee1275_devalias_next (&(alias));)
#define FOR_IEEE1275_DEVCHILDREN(devpath, alias) for (grub_ieee1275_children_first ((devpath), &(alias)); \