add support for fsflags= option in twrp.fstab file
example userdata line (as needed by MotoX):
/data f2fs /dev/block/platform/msm_sdcc.1/by-name/userdata flags=fsflags="inline_xattr"
Code for parsing flags/options originally based on AOSP fs_mgr sources.
Change-Id: I5fb2b5d5cdd08137e6bf71f0085a3f8aebd889a8
diff --git a/partition.cpp b/partition.cpp
index c1e214e..061a3e1 100644
--- a/partition.cpp
+++ b/partition.cpp
@@ -57,6 +57,31 @@
extern struct selabel_handle *selinux_handle;
+struct flag_list {
+ const char *name;
+ unsigned flag;
+};
+
+static struct flag_list mount_flags[] = {
+ { "noatime", MS_NOATIME },
+ { "noexec", MS_NOEXEC },
+ { "nosuid", MS_NOSUID },
+ { "nodev", MS_NODEV },
+ { "nodiratime", MS_NODIRATIME },
+ { "ro", MS_RDONLY },
+ { "rw", 0 },
+ { "remount", MS_REMOUNT },
+ { "bind", MS_BIND },
+ { "rec", MS_REC },
+ { "unbindable", MS_UNBINDABLE },
+ { "private", MS_PRIVATE },
+ { "slave", MS_SLAVE },
+ { "shared", MS_SHARED },
+ { "sync", MS_SYNCHRONOUS },
+ { "defaults", 0 },
+ { 0, 0 },
+};
+
TWPartition::TWPartition(void) {
Can_Be_Mounted = false;
Can_Be_Wiped = false;
@@ -101,6 +126,8 @@
Storage_Path = "";
Current_File_System = "";
Fstab_File_System = "";
+ Mount_Flags = 0;
+ Mount_Options = "";
Format_Block_Size = 0;
Ignore_Blkid = false;
Retain_Layout_Version = false;
@@ -373,6 +400,38 @@
return true;
}
+bool TWPartition::Process_FS_Flags(string& Options, int Flags) {
+ int i;
+ char *p;
+ char *savep;
+ char fs_options[250];
+
+ strlcpy(fs_options, Options.c_str(), sizeof(fs_options));
+ Options = "";
+
+ p = strtok_r(fs_options, ",", &savep);
+ while (p) {
+ /* Look for the flag "p" in the flag list "fl"
+ * If not found, the loop exits with fl[i].name being null.
+ */
+ for (i = 0; mount_flags[i].name; i++) {
+ if (strncmp(p, mount_flags[i].name, strlen(mount_flags[i].name)) == 0) {
+ Flags |= mount_flags[i].flag;
+ break;
+ }
+ }
+
+ if (!mount_flags[i].name) {
+ if (Options.size() > 0)
+ Options += ",";
+ Options += p;
+ }
+ p = strtok_r(NULL, ",", &savep);
+ }
+
+ return true;
+}
+
bool TWPartition::Process_Flags(string Flags, bool Display_Error) {
char flags[MAX_FSTAB_LINE_LENGTH];
int flags_len, index = 0, ptr_len;
@@ -474,6 +533,15 @@
} else {
Use_Userdata_Encryption = false;
}
+ } else if (ptr_len > 8 && strncmp(ptr, "fsflags=", 8) == 0) {
+ ptr += 8;
+ if (*ptr == '\"') ptr++;
+
+ Mount_Options = ptr;
+ if (Mount_Options.substr(Mount_Options.size() - 1, 1) == "\"") {
+ Mount_Options.resize(Mount_Options.size() - 1);
+ }
+ Process_FS_Flags(Mount_Options, Mount_Flags);
} else {
if (Display_Error)
LOGERR("Unhandled flag: '%s'\n", ptr);
@@ -872,7 +940,7 @@
}
return true;
}
- } else if (!exfat_mounted && mount(Actual_Block_Device.c_str(), Mount_Point.c_str(), Current_File_System.c_str(), 0, NULL) != 0) {
+ } else if (!exfat_mounted && mount(Actual_Block_Device.c_str(), Mount_Point.c_str(), Current_File_System.c_str(), Mount_Flags, Mount_Options.c_str()) != 0) {
#ifdef TW_NO_EXFAT_FUSE
if (Current_File_System == "exfat") {
LOGINFO("Mounting exfat failed, trying vfat...\n");
@@ -881,7 +949,7 @@
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'\n", Actual_Block_Device.c_str(), Current_File_System.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());
return false;
}
} else {