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Make it clear that being able to restore root is a failure

This commit is contained in:
emersion 2018-10-29 23:52:03 +01:00
parent cd0bae80b6
commit 9dae68eba5
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GPG Key ID: 0FDE7BE0E88F5E48
1 changed files with 5 additions and 4 deletions
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sway/main.c
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@ -197,17 +197,18 @@ static void log_kernel(void) {
static void drop_permissions(void) {
if (getuid() != geteuid() || getgid() != getegid()) {
if (setgid(getgid()) != 0) {
wlr_log(WLR_ERROR, "Unable to drop root");
wlr_log(WLR_ERROR, "Unable to drop root, refusing to start");
exit(EXIT_FAILURE);
}
if (setuid(getuid()) != 0) {
wlr_log(WLR_ERROR, "Unable to drop root");
wlr_log(WLR_ERROR, "Unable to drop root, refusing to start");
exit(EXIT_FAILURE);
}
}
if (setuid(0) != -1) {
wlr_log(WLR_ERROR, "Root privileges can be restored.");
exit(EXIT_FAILURE);
wlr_log(WLR_ERROR, "Unable to drop root (we shouldn't be able to "
"restore it after setuid), refusing to start");
return false;
}
}