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util: rm_rf_children_dangerous: delete all descendants dangerously

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Call rm_rf_children_dangerous() recursively rather than falling back to
rm_rf_children(). This fixes a bug in systemd-tmpfiles.

The problem can easily be reproduced by:

  # mount /dev/sda1 /mnt
  # mkdir /mnt/test
  # echo "D /mnt" > /root/test.conf
  # systemd-tmpfiles --remove /root/test.conf
  Attempted to remove disk file system, and we can't allow that.
  rm_rf(/root/test): Operation not permitted

Reported-by: Lukas Jirkovsky <l.jirkovsky@gmail.com>
This commit is contained in:
Tom Gundersen 2012-09-03 15:40:37 +02:00 committed by Lennart Poettering
parent 4a30847b9d
commit b3d284696c
1 changed files with 1 additions and 1 deletions
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2
src/shared/util.c
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@ -3358,7 +3358,7 @@ int rm_rf_children_dangerous(int fd, bool only_dirs, bool honour_sticky, struct
continue;
}
r = rm_rf_children(subdir_fd, only_dirs, honour_sticky, root_dev);
r = rm_rf_children_dangerous(subdir_fd, only_dirs, honour_sticky, root_dev);
if (r < 0 && ret == 0)
ret = r;