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Commit 22abdc39 authored by David Ng's avatar David Ng Committed by Linux Build Service Account
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ueventd: Add bootdevice symlink for boot storage device 

Create /dev/block/bootdevice symlink for the boot storage
device based on ro.boot.bootdevice property.  The property
value can be passed in via bootloader.  This abstracts
references to the boot device (including partition nodes
in the boot device) from the actual device nodes (e.g. eMMC,
UFS).

Change-Id: I9c921fc9e31855759435fac27bd384645eee0236
parent b198304a

init/devices.cpp

+8 −0
Original line number Diff line number Diff line
@@ -47,6 +47,7 @@ 
#include "ueventd_parser.h"

#include "util.h"

#include "log.h"

#include "property_service.h"



#define SYSFS_PREFIX    "/sys"

static const char *firmware_dirs[] = { "/etc/firmware",
@@ -55,6 +56,8 @@ static const char *firmware_dirs[] = { "/etc/firmware", 


extern struct selabel_handle *sehandle;



extern char boot_device[PROP_VALUE_MAX];



static int device_fd = -1;



struct uevent {
@@ -518,6 +521,11 @@ static char **get_block_device_symlinks(struct uevent *uevent) 
    else

        links[link_num] = NULL;



    if (pdev && boot_device[0] != '\0' && strstr(device, boot_device)) {

        /* Create bootdevice symlink for platform boot stroage device */

        make_link_init(link_path, "/dev/block/bootdevice");

    }



    return links;

}

init/ueventd.cpp

+4 −0
Original line number Diff line number Diff line
@@ -33,6 +33,8 @@ 
#include "ueventd_parser.h"

#include "property_service.h"



char boot_device[PROP_VALUE_MAX];



int ueventd_main(int argc, char **argv)

{

    /*
@@ -65,6 +67,8 @@ int ueventd_main(int argc, char **argv) 
    ueventd_parse_config_file("/ueventd.rc");

    ueventd_parse_config_file(android::base::StringPrintf("/ueventd.%s.rc", hardware).c_str());



    property_get("ro.boot.bootdevice", boot_device);



    device_init();



    pollfd ufd;