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bootctrl: enforce synchronous write operation

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Bug: 197104397
Signed-off-by: Oleg Matcovschi <omatcovschi@google.com>
Change-Id: Ifbc612fc40847395ccb751463b1bb15bd3f20657
This commit is contained in:
Oleg Matcovschi 2021-08-20 00:43:31 -07:00
parent a07c71c4c7
commit 95f4b9ccb7
1 changed files with 3 additions and 3 deletions
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6
interfaces/boot/1.2/BootControl.cpp
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@ -162,7 +162,7 @@ static bool DevInfoSync() {
return false; return false;
} }
android::base::unique_fd fd(open(DEVINFO_PATH, O_WRONLY)); android::base::unique_fd fd(open(DEVINFO_PATH, O_WRONLY | O_DSYNC));
return android::base::WriteFully(fd, &devinfo, sizeof devinfo); return android::base::WriteFully(fd, &devinfo, sizeof devinfo);
} }
@ -270,13 +270,13 @@ Return<void> BootControl::setActiveBootSlot(uint32_t slot, setActiveBootSlot_cb
std::string boot_lun_path = std::string boot_lun_path =
std::string("/sys/devices/platform/") + boot_dev + "/pixel/boot_lun_enabled"; std::string("/sys/devices/platform/") + boot_dev + "/pixel/boot_lun_enabled";
int fd = open(boot_lun_path.c_str(), O_RDWR); int fd = open(boot_lun_path.c_str(), O_RDWR | O_DSYNC);
if (fd < 0) { if (fd < 0) {
// Try old path for kernels < 5.4 // Try old path for kernels < 5.4
// TODO: remove once kernel 4.19 support is deprecated // TODO: remove once kernel 4.19 support is deprecated
std::string boot_lun_path = std::string boot_lun_path =
std::string("/sys/devices/platform/") + boot_dev + "/attributes/boot_lun_enabled"; std::string("/sys/devices/platform/") + boot_dev + "/attributes/boot_lun_enabled";
fd = open(boot_lun_path.c_str(), O_RDWR); fd = open(boot_lun_path.c_str(), O_RDWR | O_DSYNC);
if (fd < 0) { if (fd < 0) {
_hidl_cb({false, "failed to open ufs attr boot_lun_enabled"}); _hidl_cb({false, "failed to open ufs attr boot_lun_enabled"});
return Void(); return Void();