)]}'
{
  "commit": "2f221d6f7b881d95de1f356a3097d755ab1e47d4",
  "tree": "3d136e3ade1492f1ab59e09546ffa6f2d723f76d",
  "parents": [
    "21cb47be6fb9ece7e6ee63f6780986faa384a77c"
  ],
  "author": {
    "name": "Christian Brauner",
    "email": "christian.brauner@ubuntu.com",
    "time": "Thu Jan 21 14:19:26 2021 +0100"
  },
  "committer": {
    "name": "Christian Brauner",
    "email": "christian.brauner@ubuntu.com",
    "time": "Sun Jan 24 14:27:16 2021 +0100"
  },
  "message": "attr: handle idmapped mounts\n\nWhen file attributes are changed most filesystems rely on the\nsetattr_prepare(), setattr_copy(), and notify_change() helpers for\ninitialization and permission checking. Let them handle idmapped mounts.\nIf the inode is accessed through an idmapped mount map it into the\nmount\u0027s user namespace. Afterwards the checks are identical to\nnon-idmapped mounts. If the initial user namespace is passed nothing\nchanges so non-idmapped mounts will see identical behavior as before.\n\nHelpers that perform checks on the ia_uid and ia_gid fields in struct\niattr assume that ia_uid and ia_gid are intended values and have already\nbeen mapped correctly at the userspace-kernelspace boundary as we\nalready do today. If the initial user namespace is passed nothing\nchanges so non-idmapped mounts will see identical behavior as before.\n\nLink: https://lore.kernel.org/r/20210121131959.646623-8-christian.brauner@ubuntu.com\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: linux-fsdevel@vger.kernel.org\nReviewed-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Christian Brauner \u003cchristian.brauner@ubuntu.com\u003e\n",
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