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Add support for F2FS UUIDs #10

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Add support for F2FS UUIDs #10

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17 changes: 16 additions & 1 deletion devices.c
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Original file line number Diff line number Diff line change
Expand Up @@ -59,6 +59,7 @@ static int is_fs_with_uuid(const char *device_name, const char *uuid_buf);
static int is_ext234_with_uuid(const char *device_name, const char *uuid_buf);
static int is_xfs_with_uuid(const char *device_name, const char *uuid_buf);
static int is_btrfs_with_uuid(const char *device_name, const char *uuid_buf);
static int is_f2fs_with_uuid(const char *device_name, const char *uuid_buf);
static int read_block(const char *device_name, off_t start, void *data_buffer, size_t len);

int parse_uuid(char *uuid_buf /* 16 bytes */, const char *string_representation)
Expand Down Expand Up @@ -413,7 +414,8 @@ int is_fs_with_uuid(const char *device_name, const char *uuid_buf)
{
return is_btrfs_with_uuid(device_name, uuid_buf)
|| is_xfs_with_uuid(device_name, uuid_buf)
|| is_ext234_with_uuid(device_name, uuid_buf);
|| is_ext234_with_uuid(device_name, uuid_buf)
|| is_f2fs_with_uuid(device_name, uuid_buf);
}

int is_ext234_with_uuid(const char *device_name, const char *uuid_buf)
Expand Down Expand Up @@ -454,4 +456,17 @@ int is_btrfs_with_uuid(const char *device_name, const char *uuid_buf)
return memcmp(&buf[0x40], "_BHRfS_M", 8) == 0
&& memcmp(&buf[0x20], uuid_buf, 16) == 0;
}

int is_f2fs_with_uuid(const char *device_name, const char *uuid_buf)
{
char buf[0x7c];
int r;

r = read_block(device_name, 1024, buf, 0x7c);
if (r < 0 || r > 0)
return 0;

return memcmp(&buf[0x00], "\x10\x20\xf5\xf2", 4) == 0
&& memcmp(&buf[0x6c], uuid_buf, 16) == 0;
}
#endif /* defined(ENABLE_UUID) */