On 2018/1/18 15:34, Amir Goldstein Wrote: > On Thu, Jan 18, 2018 at 5:50 AM, zhangyi (F) <yi.zhang@xxxxxxxxxx> wrote: >> Hi All, >> >> Here is the forth version of fsck.overlay. Most of comments from last >> three iterations have been handled. Now, this tool have three basic >> features (see README for detail, include TODO list): >> 1. Check and fix orphan whiteouts, >> 2. Check and fix invalid/duplicate redirect directories, >> 3. Check and fix missing impure xattrs. >> >> This incubation tool will post to github repository[1] directly. >> Any suggestion is helpful if you review the source code or find >> bugs/improvements when you use/test this tool. >> >> Thanks, >> Yi. >> >> [1] https://github.com/hisilicon/overlayfs-progs > > Very nice work! > I find your code very pleasant to read. > I did not go through it all to check functional correctness. > Just have some minor high level comments. Thanks for your approval and comments. > In general, many functions could use a comment and more > files could use a header comment. > Will do. >> >> Changes since v3: >> - Use existing library for path manipulation and separate >> self-implemented manipulation helpers. (Comment from Amir) > > Specifically, in what way in basename2() different than basename()? > and what is a the semantics of joinname()? > There are thing better documented above the functions, especially > for general utility functions. > Will do. > >> - Use fstatat() with relative path instead of lstat() with absolute path >> when traverse layers and lookup target. (Amir) >> - Split check routines into two pass, the first pass check redirect dir >> to confirm directory structure, the second pass check whiteouts and >> impure xattr. > > This could be an opportunity to start splitting check.c which is getting > bigger to pass1.c pass2.c or to check_whiteout.c check_redirect.c. > I leave it up to you to decide when and how to split. > Yes, I realize that fsck.ext4 have passN.c to handle each pass, I will think how to split it. >> - Change list to linux kernel style. > > This is a good example of code copied/derived from kernel code > that is placed in a dedicated file with header comment to state > this fact. > > You should do the same with other functions that are copied from > kernel and place them in a dedicated file with header comment. > There are 2 such helpers in mount.c and at least one constant in > config.h. > Will do. Thanks, Yi. >> - Fix duplicate redirect xattr check, correct questions and default >> actions, and handle cases of duplicate redirect xattr in different >> layers. (Amir) >> - Fix impure xattr comments and invalid error message. (Amir & Vivek) >> >> ---------------- >> >> Changes since v2(v1): >> >> - Add "-n -p -y" options. (Comment from Amir and Darrick) >> - Change underlying dirs input to '-o' option like mount(8). (Miklos) >> - Remove invalid opaque check. (Miklos) >> - Correct redirect xattr check. (Amir and Miklos) >> - Fix lower target lookup, handle the missing case of opaque and >> redirect parent. >> - Add impure xattr check. (Amir) >> >> zhangyi (F) (5): >> overlay: implement fsck utility >> fsck.overlay: correct redirect xattr check >> fsck.overlay: add origin count >> fsck.overlay: add merge and redirect subdir count >> fsck.overlay: add impure xattr check >> > > . > -- To unsubscribe from this list: send the line "unsubscribe linux-unionfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
