diff options
Diffstat (limited to 'partition.cpp')
| -rw-r--r-- | partition.cpp | 56 |
1 files changed, 52 insertions, 4 deletions
diff --git a/partition.cpp b/partition.cpp index 248ee9bc2..2f9f41a69 100644 --- a/partition.cpp +++ b/partition.cpp @@ -155,6 +155,7 @@ TWPartition::TWPartition() { Crypto_Key_Location = "footer"; MTP_Storage_ID = 0; Can_Flash_Img = false; + Mount_Read_Only = false; } TWPartition::~TWPartition(void) { @@ -258,6 +259,7 @@ bool TWPartition::Process_Fstab_Line(string Line, bool Display_Error) { Storage_Name = Display_Name; Wipe_Available_in_GUI = true; Can_Be_Backed_Up = true; + Mount_Read_Only = true; } else if (Mount_Point == "/data") { UnMount(false); // added in case /data is mounted as tmpfs for qcom hardware decrypt Display_Name = "Data"; @@ -390,6 +392,11 @@ bool TWPartition::Process_Fstab_Line(string Line, bool Display_Error) { Display_Name = "Recovery"; Backup_Display_Name = Display_Name; Can_Flash_Img = true; + } else if (Mount_Point == "/system_image") { + Display_Name = "System Image"; + Backup_Display_Name = Display_Name; + Can_Flash_Img = false; + Can_Be_Backed_Up = true; } } @@ -936,6 +943,7 @@ bool TWPartition::Is_Mounted(void) { bool TWPartition::Mount(bool Display_Error) { int exfat_mounted = 0; + unsigned long flags = Mount_Flags; if (Is_Mounted()) { return true; @@ -964,9 +972,15 @@ bool TWPartition::Mount(bool Display_Error) { #endif } } + + if (Mount_Read_Only) + flags |= MS_RDONLY; + if (Fstab_File_System == "yaffs2") { // mount an MTD partition as a YAFFS2 filesystem. - const unsigned long flags = MS_NOATIME | MS_NODEV | MS_NODIRATIME; + flags = MS_NOATIME | MS_NODEV | MS_NODIRATIME; + if (Mount_Read_Only) + flags |= MS_RDONLY; if (mount(Actual_Block_Device.c_str(), Mount_Point.c_str(), Fstab_File_System.c_str(), flags, NULL) < 0) { if (mount(Actual_Block_Device.c_str(), Mount_Point.c_str(), Fstab_File_System.c_str(), flags | MS_RDONLY, NULL) < 0) { if (Display_Error) @@ -1008,8 +1022,8 @@ bool TWPartition::Mount(bool Display_Error) { mount_fs = "texfat"; if (!exfat_mounted && - mount(Actual_Block_Device.c_str(), Mount_Point.c_str(), mount_fs.c_str(), Mount_Flags, Mount_Options.c_str()) != 0 && - mount(Actual_Block_Device.c_str(), Mount_Point.c_str(), mount_fs.c_str(), Mount_Flags, NULL) != 0) { + mount(Actual_Block_Device.c_str(), Mount_Point.c_str(), mount_fs.c_str(), flags, Mount_Options.c_str()) != 0 && + mount(Actual_Block_Device.c_str(), Mount_Point.c_str(), mount_fs.c_str(), flags, NULL) != 0) { #ifdef TW_NO_EXFAT_FUSE if (Current_File_System == "exfat") { LOGINFO("Mounting exfat failed, trying vfat...\n"); @@ -1018,7 +1032,7 @@ bool TWPartition::Mount(bool Display_Error) { LOGERR("Unable to mount '%s'\n", Mount_Point.c_str()); else LOGINFO("Unable to mount '%s'\n", Mount_Point.c_str()); - LOGINFO("Actual block device: '%s', current file system: '%s', flags: 0x%8x, options: '%s'\n", Actual_Block_Device.c_str(), Current_File_System.c_str(), Mount_Flags, Mount_Options.c_str()); + LOGINFO("Actual block device: '%s', current file system: '%s', flags: 0x%8x, options: '%s'\n", Actual_Block_Device.c_str(), Current_File_System.c_str(), flags, Mount_Options.c_str()); return false; } } else { @@ -2138,3 +2152,37 @@ bool TWPartition::Flash_Image_FI(string Filename) { TWFunc::Exec_Cmd(Command); return true; } + +void TWPartition::Change_Mount_Read_Only(bool new_value) { + Mount_Read_Only = new_value; +} + +int TWPartition::Check_Lifetime_Writes() { + bool original_read_only = Mount_Read_Only; + int ret = 1; + + Mount_Read_Only = true; + if (Mount(false)) { + Find_Actual_Block_Device(); + string block = basename(Actual_Block_Device.c_str()); + string file = "/sys/fs/" + Current_File_System + "/" + block + "/lifetime_write_kbytes"; + string result; + if (TWFunc::Path_Exists(file)) { + if (TWFunc::read_file(file, result) != 0) { + LOGINFO("Check_Lifetime_Writes of '%s' failed to read_file\n", file.c_str()); + } else { + LOGINFO("Check_Lifetime_Writes result: '%s'\n", result.c_str()); + if (result == "0") { + ret = 0; + } + } + } else { + LOGINFO("Check_Lifetime_Writes file does not exist '%s'\n", file.c_str()); + } + UnMount(true); + } else { + LOGINFO("Check_Lifetime_Writes failed to mount '%s'\n", Mount_Point.c_str()); + } + Mount_Read_Only = original_read_only; + return ret; +} |