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Adjust special handling of existing read-only output files

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Instead of duplicating the permissions on the temp file, the permissions
are duplicated on the output file directly. If the output file exists as
read-only, it is made writeable first.

There are some environments which don't allow the mv to work if the file
itself is read-only.
This commit is contained in:
Tim Byrne
2021-02-28 10:55:37 -06:00
parent 39773765ab
commit 216aed2f87
4 changed files with 25 additions and 12 deletions
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yadm
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@@ -489,20 +489,15 @@ function move_file() {
local output=$2
local temp_file=$3
if [ ! -f "$temp_file" ] ; then
return 0
fi
[ ! -f "$temp_file" ] && return
# if the output files already exists as read-only, change it to be writable.
# there are some environments in which a read-only file will prevent the move
# from being successful.
[[ -e "$output" && ! -w "$output" ]] && chmod u+w "$output"
local read_only
copy_perms "$input" "$temp_file"
if [[ -e "$output" && ! -w "$output" ]]; then
read_only=1
chmod u+w "$output"
fi
mv -f "$temp_file" "$output"
if [ -n "$read_only" ]; then
chmod u-w "$output"
fi
copy_perms "$input" "$output"
}
# ****** yadm Commands ******