On Tue, Dec 22, 2020 at 04:10:58PM +0800, Yue Hu wrote: > On Tue, 22 Dec 2020 15:04:58 +0800 > Gao Xiang <[email protected]> wrote: > > > Hi Yue, > > > > On Tue, Dec 22, 2020 at 02:31:12PM +0800, Gao Xiang wrote: > > > > ... > > > > > > > > Ok, I will try to find some clue to verify later. > > > > > > > > > > > > > > > > > > Moreover, we should not add the mount point to fspath on root inode > > > > > > for > > > > > > fs_config() branch. > > > > > > > > > > Is there some descriptive words or reference for this? To be honest, > > > > > I'm quite unsure about this kind of Android-specific things... :( > > > > > > > > Refer to change: mksquashfs: Run android_fs_config() on the root inode > > > > > > > > I think erofs of AOSP has this issue also. Am i right? > > > > > > Not quite sure if it effects non-canned fs_config after > > > reading the commit message... > > > https://android.googlesource.com/platform/external/squashfs-tools/+/85a6bc1e52bb911f195c5dc0890717913938c2d1%5E%21/#F0 > > > > > > And no permission to access Bug 72745016, so... > > > maybe we need to limit this to non-canned fs_config only? > > > (at least confirming the original case would be better) > > > > > > BTW, Also, from its testcase command line in the commit message: > > > "mksquashfs path system.raw.img -fs-config-file fs_config > > > -android-fs-config" > > > > > > I'm not sure if "--mount-point" is passed in so I think for > > > such case no need to use such "goto" as well? > > > > > > Thanks, > > > Gao Xiang > > > > Could you verify the following patch if possible? (without compilation, > > I don't have test environment now since AOSP code is on my PC) > > > > From: Yue Hu <[email protected]> > > Date: Tue, 22 Dec 2020 14:52:22 +0800 > > Subject: [PATCH] AOSP: erofs-utils: fix sub-directory prefix for canned > > fs_config > > > > "failed to find [%s] in canned fs_config" is observed by using > > "--fs-config-file" option under Android 10. > > > > Notice that canned fs_config has a prefix to sub-directory if > > "--mount-point" presents. However, such prefix cannot be added by > > just using erofs_fspath(). > > > > Fixes: 8a9e8046f170 ("AOSP: erofs-utils: add fs_config support") > > Signed-off-by: Yue Hu <[email protected]> > > Signed-off-by: Gao Xiang <[email protected]> > > --- > > lib/inode.c | 18 +++++++++++------- > > 1 file changed, 11 insertions(+), 7 deletions(-) > > > > diff --git a/lib/inode.c b/lib/inode.c > > index 3d634fc..9469074 100644 > > --- a/lib/inode.c > > +++ b/lib/inode.c > > @@ -701,21 +701,25 @@ int erofs_droid_inode_fsconfig(struct erofs_inode > > *inode, > > char *fspath; > > > > inode->capabilities = 0; > > + if (!cfg.mount_point) > > + fspath = erofs_fspath(path); > > lib/inode.c:688:10: error: assigning to 'char *' from 'const char *' > discards... > fspath = erofs_fspath(path); > ^ ~~~~~~~~~~~~~~~~~~ > > - fspath = erofs_fspath(path); > + fspath = (char *)erofs_fspath(path);
oops, I think it can be modified as a temporary workaround, will submit a formal patch after verification. > > > > + else if (asprintf(&fspath, "%s/%s", cfg.mount_point, > > + erofs_fspath(path)) <= 0) > > The argument of path will be root directory. And canned fs_config for root > directory as > below: > > 0 0 755 selabel=u:object_r:rootfs:s0 capabilities=0x0 > > So, cannot add mount point to root directory for canned fs_config. And what > about non-canned > fs_config? Not quite sure what you mean. For non-canned fs_config, we didn't observed any strange before (I ported to cuttlefish and hikey960 with boot success, also as I mentioned before some other vendors already use it.) I think the following commit is only useful for squashfs since its (non)root inode workflows are different, so need to add in two difference place. But mkfs.erofs is not. https://android.googlesource.com/platform/external/squashfs-tools/+/85a6bc1e52bb911f195c5dc0890717913938c2d1%5E%21/#F0 For root inode is erofs, I think erofs_fspath(path) would return "", so that case is included as well.... Am I missing something? Thanks, Gao Xiang > > Thx. > > > > + return -ENOMEM; > > + > > + > > if (cfg.fs_config_file) > > - canned_fs_config(erofs_fspath(path), > > + canned_fs_config(fspath, > > S_ISDIR(st->st_mode), > > cfg.target_out_path, > > &uid, &gid, &mode, &inode->capabilities); > > - else if (cfg.mount_point) { > > - if (asprintf(&fspath, "%s/%s", cfg.mount_point, > > - erofs_fspath(path)) <= 0) > > - return -ENOMEM; > > - > > + else > > fs_config(fspath, S_ISDIR(st->st_mode), > > cfg.target_out_path, > > &uid, &gid, &mode, &inode->capabilities); > > + > > + if (cfg.mount_point) > > free(fspath); > > - } > > st->st_uid = uid; > > st->st_gid = gid; > > st->st_mode = mode | stat_file_type_mask; >
