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| author |   Jason A. Donenfeld <Jason@zx2c4.com> | 2017-10-31 18:13:31 +0100 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2017-10-31 18:13:31 +0100 |
| commit | 6e313371cccc13c742a4ed3daaa4d826937f6596 (patch) | |
| tree | 3adcda34e110bf2fde5e531635d24839f87eb2d9 /src | |
| parent | wg-quick: allow for saving existing interface (diff) | |
| download | wireguard-tools-6e313371cccc13c742a4ed3daaa4d826937f6596.tar.xz wireguard-tools-6e313371cccc13c742a4ed3daaa4d826937f6596.zip | |
wg-quick: fsync the temporary file before renaming
This ensures that on an unclean shutdown, we either see the old content
or the new content, but not empty content.
Suggested-by: Ka Ho Ng <ngkaho1234@gmail.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Diffstat (limited to 'src')
| -rwxr-xr-x | src/wg-quick.bash | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/wg-quick.bash b/src/wg-quick.bash index da4c0d4..7dc8be1 100755 --- a/src/wg-quick.bash +++ b/src/wg-quick.bash @@ -197,6 +197,7 @@ save_config() { current_config="$(cmd wg showconf "$INTERFACE")" trap 'rm -f "$CONFIG_FILE.tmp"; exit' INT TERM EXIT echo "${current_config/\[Interface\]$'\n'/$new_config}" > "$CONFIG_FILE.tmp" || die "Could not write configuration file" + sync "$CONFIG_FILE.tmp" mv "$CONFIG_FILE.tmp" "$CONFIG_FILE" || die "Could not move configuration file" trap - INT TERM EXIT umask "$old_umask" |