ext4: Prevent creation of files larger than RLIMIT_FSIZE using fallocate
Currently using posix_fallocate one can bypass an RLIMIT_FSIZE limit and create a file larger than the limit. Add a check for that. Signed-off-by: NNikanth Karthikesan <knikanth@suse.de> Signed-off-by: NAmit Arora <aarora@in.ibm.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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