No need for usage()

[slock.git] / slock.c

diff --git a/slock.c b/slock.c
index df2d3c6..4531f95 100644 (file)
--- a/slock.c
+++ b/slock.c
@@ -60,28 +60,20 @@ die(const char *errstr, ...)
 
 #ifdef __linux__
 #include <fcntl.h>
-#include <linux/oom.h>
 
 static void
 dontkillme(void)
 {
        int fd;
-       int length;
-       char value[64];
 
        fd = open("/proc/self/oom_score_adj", O_WRONLY);
-       if (fd < 0 && errno == ENOENT)
+       if (fd < 0 && errno == ENOENT) {
                return;
-
-       /* convert OOM_SCORE_ADJ_MIN to string for writing */
-       length = snprintf(value, sizeof(value), "%d\n", OOM_SCORE_ADJ_MIN);
-
-       /* bail on truncation */
-       if (length >= sizeof(value))
-               die("buffer too small\n");
-
-       if (fd < 0 || write(fd, value, length) != length || close(fd) != 0)
-               die("cannot disable the out-of-memory killer for this process\n");
+       }
+       if (fd < 0 || write(fd, "-1000\n", (sizeof("-1000\n") - 1)) !=
+           (sizeof("-1000\n") - 1) || close(fd) != 0) {
+               die("can't tame the oom-killer. is suid or sgid set?\n");
+       }
 }
 #endif
 
@@ -280,27 +272,15 @@ lockscreen(Display *dpy, int screen)
        return NULL;
 }
 
-static void
-usage(void)
-{
-       fprintf(stderr, "usage: slock [-v|POST_LOCK_CMD]\n");
-       exit(1);
-}
-
 int
-main(int argc, char **argv) {
+main(int argc, char **argv)
+{
 #ifndef HAVE_BSD_AUTH
        const char *pws;
 #endif
        Display *dpy;
        int screen;
 
-       if ((argc == 2) && !strcmp("-v", argv[1]))
-               die("slock-%s, © 2006-2015 slock engineers\n", VERSION);
-
-       if ((argc == 2) && !strcmp("-h", argv[1]))
-               usage();
-
 #ifdef __linux__
        dontkillme();
 #endif