| BVRef selectBootVolume( BVRef chain )␊ |
| {␊ |
| ␉bool filteredChain = false;␊ |
| ␉BVRef bvr = 0;␊ |
| ␉bool foundPrimary = false;␊ |
| ␉BVRef bvr, bvr1 = 0, bvr2 = 0;␊ |
| ␉␊ |
| ␉if (chain->filtered) filteredChain = true;␊ |
| ␉␊ |
| int gBIOSDev = (int)get_env(envgBIOSDev);␊ |
| ␊ |
| ␉int gBIOSDev = (int)get_env(envgBIOSDev);␊ |
| ␊ |
| #if UNUSED␊ |
| ␉if (multiboot_partition_set)␊ |
| ␉␉for ( bvr = chain; bvr; bvr = bvr->next )␊ |
| ␉␉␉if ( bvr->part_no == multiboot_partition && bvr->biosdev == gBIOSDev ) ␊ |
| ␉␉␉␉return bvr;␊ |
| #endif␊ |
| ␊ |
| ␉/*␊ |
| ␉ * Checking "Default Partition" key in system configuration - use format: hd(x,y), the volume UUID or label -␊ |
| ␉ * to override the default selection.␊ |
|
| }␊ |
| }␊ |
| free(val);␊ |
| }␉␊ |
| ␊ |
| }␊ |
| ␉␊ |
| ␉/*␊ |
| ␉ * Scannig the volume chain backwards and trying to find ␊ |
| ␉ * a HFS+ volume with valid boot record signature.␊ |
| ␉ * If not found any active partition then we will␊ |
| ␉ * select this volume as the boot volume.␊ |
| ␉ */␊ |
| ␉for ( bvr = chain; bvr; bvr = bvr->next )␊ |
| ␉␊ |
| ␉{␊ |
| ␉␉// zhell -- Undo a regression that was introduced from r491 to 492.␊ |
| ␉␉// if gBIOSBootVolume is set already, no change is required␊ |
| ␉␉if ( (bvr->flags & (kBVFlagBootable|kBVFlagSystemVolume))␊ |
| ␉␉␉&& gBIOSBootVolume␊ |
| ␉␉␉&& (!filteredChain || (filteredChain && bvr->visible))␊ |
| ␉␉␉&& (bvr->biosdev == gBIOSDev) )␊ |
| {␊ |
| goto out; /* (1) */␊ |
| }␊ |
| ␉␉// zhell -- if gBIOSBootVolume is NOT set, we use the "if" statement␊ |
| ␉␉// from r491,␊ |
| ␉␉if ( (bvr->flags & kBVFlagBootable)␊ |
| ␉␉␉&& ! gBIOSBootVolume␊ |
| ␉␉␉&& (bvr->biosdev == gBIOSDev) )␊ |
| {␊ |
| goto out; /* (2) */␊ |
| }␊ |
| ␉} ␊ |
| ␉␉bvr = chain;␊ |
| ␉␉do {␊ |
| #if UNUSED␊ |
| ␉␉␉if (multiboot_skip_partition_set) {␊ |
| ␉␉␉␉if (bvr->part_no == multiboot_skip_partition) {bvr = bvr->next; continue;}␊ |
| ␉␉␉}␊ |
| #endif␊ |
| ␉␉␉if ( (bvr->flags & kBVFlagPrimary) && (bvr->biosdev == gBIOSDev) ) foundPrimary = true;␊ |
| ␉␉␉// zhell -- Undo a regression that was introduced from r491 to 492.␊ |
| ␉␉␉// if gBIOSBootVolume is set already, no change is required␊ |
| ␉␉␉if ( (bvr->flags & (kBVFlagBootable|kBVFlagSystemVolume))␊ |
| ␉␉␉␉&& gBIOSBootVolume␊ |
| ␉␉␉␉&& (!filteredChain || (filteredChain && bvr->visible))␊ |
| ␉␉␉␉&& (bvr->biosdev == gBIOSDev) )␊ |
| ␉␉␉{␊ |
| ␉␉␉␉bvr2 = bvr;␊ |
| ␉␉␉␉bvr = bvr->next;␊ |
| ␉␉␉␉continue;␊ |
| ␉␉␉}␊ |
| ␉␉␉// zhell -- if gBIOSBootVolume is NOT set, we use the "if" statement␊ |
| ␉␉␉// from r491,␊ |
| ␉␉␉if ( bvr->flags & kBVFlagBootable␊ |
| ␉␉␉␉&& ! gBIOSBootVolume␊ |
| ␉␉␉␉&& bvr->biosdev == gBIOSDev )␊ |
| ␉␉␉{␊ |
| ␉␉␉␉bvr2 = bvr;␊ |
| ␉␉␉␉bvr = bvr->next;␊ |
| ␉␉␉␉continue;␊ |
| ␉␉␉}␊ |
| ␉␉␉␊ |
| ␉␉} while (bvr != NULL);␊ |
| ␉}␊ |
| ␉␉␊ |
| ␉/*␊ |
| * cparm: ␊ |
| * For cases (1) and (2), there is no need to continue the loop since only one biosdev can be the gBIOSDev␊ |
| * ␊ |
| */␊ |
| ␉␊ |
| ␉/*␊ |
| ␉ * Use the standrad method for selecting the boot volume.␊ |
| ␉ */␊ |
| ␉if (foundPrimary)␊ |
| ␉{␊ |
| ␉␉for ( bvr = chain; bvr; bvr = bvr->next )␊ |
| ␉␉{␊ |
| ␉␉␉if ( (bvr->flags & kBVFlagNativeBoot) && (bvr->biosdev == gBIOSDev) ) {break;}␊ |
| ␉␉␉if ( (bvr->flags & kBVFlagPrimary) && (bvr->biosdev == gBIOSDev) ) {break;}␊ |
| ␉␉␉if ( bvr->flags & kBVFlagNativeBoot && bvr->biosdev == gBIOSDev ) bvr1 = bvr;␊ |
| ␉␉␉if ( bvr->flags & kBVFlagPrimary && bvr->biosdev == gBIOSDev ) bvr2 = bvr;␊ |
| ␉␉}␊ |
| ␉}␊ |
| ␉␊ |
| out:␊ |
| ␉return bvr ? bvr : chain;␊ |
| ␉bvr = bvr2 ? bvr2 :␊ |
| ␉bvr1 ? bvr1 : chain;␊ |
| ␉␊ |
| ␉return bvr;␊ |
| }␊ |
| ␊ |
| //==========================================================================␊ |
