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main: allow running as root when not using setuid bit

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This commit is contained in:
Jan Beich 2021-09-13 13:30:59 +00:00
parent 1b86008721
commit 895c347006
1 changed files with 5 additions and 0 deletions
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5
sway/main.c
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@ -150,7 +150,12 @@ static void log_kernel(void) {
static bool drop_permissions(void) {
if (getuid() == 0 || getgid() == 0) {
sway_log(SWAY_INFO, "Running as root user, this is dangerous");
return true;
}
if (getuid() != geteuid() || getgid() != getegid()) {
sway_log(SWAY_INFO, "setuid/setgid bit detected, dropping permissions");
// Set the gid and uid in the correct order.
if (setgid(getgid()) != 0) {
sway_log(SWAY_ERROR, "Unable to drop root group, refusing to start");