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Commit 2e7d80d1 authored by Jeff Sharkey's avatar Jeff Sharkey
Browse files

Per-app media directories on external storage. 

This change defines per-app directories on external storage that
will be scanned and included in MediaStore.  This gives apps a way
to write content to secondary shared storage in a way that can
easily be surfaced to other apps.

Bug: 14382377
Change-Id: I6f03d8076a9391d8b9eb8421ec3fc93669b3ba0d
parent d502cb34

sdcard/sdcard.c

+7 −0
Original line number Diff line number Diff line
@@ -139,6 +139,8 @@ typedef enum { 
    PERM_ANDROID_DATA,

    /* This node is "/Android/obb" */

    PERM_ANDROID_OBB,

    /* This node is "/Android/media" */

    PERM_ANDROID_MEDIA,

    /* This node is "/Android/user" */

    PERM_ANDROID_USER,

} perm_t;
@@ -475,6 +477,10 @@ static void derive_permissions_locked(struct fuse* fuse, struct node *parent, 
            /* Single OBB directory is always shared */

            node->graft_path = fuse->obbpath;

            node->graft_pathlen = strlen(fuse->obbpath);

        } else if (!strcasecmp(node->name, "media")) {

            /* App-specific directories inside; let anyone traverse */

            node->perm = PERM_ANDROID_MEDIA;

            node->mode = 0771;

        } else if (!strcasecmp(node->name, "user")) {

            /* User directories must only be accessible to system, protected

             * by sdcard_all. Zygote will bind mount the appropriate user-
@@ -486,6 +492,7 @@ static void derive_permissions_locked(struct fuse* fuse, struct node *parent, 
        break;

    case PERM_ANDROID_DATA:

    case PERM_ANDROID_OBB:

    case PERM_ANDROID_MEDIA:

        appid = (appid_t) (uintptr_t) hashmapGet(fuse->package_to_appid, node->name);

        if (appid != 0) {

            node->uid = multiuser_get_uid(parent->userid, appid);