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only use mlock() on Linux, FreeBSD (for example) requires root

pull/1/head
Michael Stapelberg 2012-08-22 20:49:10 +02:00
parent 65795be0a9
commit 1e55f0dc6f
1 changed files with 5 additions and 0 deletions
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i3lock.c
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@ -645,11 +645,16 @@ int main(int argc, char *argv[]) {
if (ret != PAM_SUCCESS)
errx(EXIT_FAILURE, "PAM: %s", pam_strerror(pam_handle, ret));
/* Using mlock() as non-super-user seems only possible in Linux. Users of other
* operating systems should use encrypted swap/no swap (or remove the ifdef and
* run i3lock as super-user). */
#if defined(__linux__)
/* Lock the area where we store the password in memory, we don’t want it to
* be swapped to disk. Since Linux 2.6.9, this does not require any
* privileges, just enough bytes in the RLIMIT_MEMLOCK limit. */
if (mlock(password, sizeof(password)) != 0)
err(EXIT_FAILURE, "Could not lock page in memory, check RLIMIT_MEMLOCK");
#endif
/* Initialize connection to X11 */
if ((conn = xcb_connect(NULL, &nscreen)) == NULL ||