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Merge "Workaround perdev_minors path change in Linux"

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Treehugger Robot 2017-11-28 18:45:30 +00:00 committed by Gerrit Code Review
commit d3870c5167
1 changed files with 4 additions and 2 deletions
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6
Disk.cpp
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@ -49,7 +49,8 @@ static const char* kSgdiskPath = "/system/bin/sgdisk";
static const char* kSgdiskToken = " \t\n";
static const char* kSysfsLoopMaxMinors = "/sys/module/loop/parameters/max_part";
static const char* kSysfsMmcMaxMinors = "/sys/module/mmcblk/parameters/perdev_minors";
static const char* kSysfsMmcMaxMinorsDeprecated = "/sys/module/mmcblk/parameters/perdev_minors";
static const char* kSysfsMmcMaxMinors = "/sys/module/mmc_block/parameters/perdev_minors";
static const unsigned int kMajorBlockLoop = 7;
static const unsigned int kMajorBlockScsiA = 8;
@ -559,7 +560,8 @@ int Disk::getMaxMinors() {
case kMajorBlockMmc: {
// Per Documentation/devices.txt this is dynamic
std::string tmp;
if (!ReadFileToString(kSysfsMmcMaxMinors, &tmp)) {
if (!ReadFileToString(kSysfsMmcMaxMinors, &tmp) &&
!ReadFileToString(kSysfsMmcMaxMinorsDeprecated, &tmp)) {
LOG(ERROR) << "Failed to read max minors";
return -errno;
}