bc: convert to "G trick" - this returns bc to zero bss increase

[oweals/busybox.git] / coreutils / usleep.c

diff --git a/coreutils/usleep.c b/coreutils/usleep.c
index 1675b2fc993b34a051242a4741041b2c682ddbeb..684ab781b179ec73e783e2af6c5f580d7b6f94f0 100644 (file)
--- a/coreutils/usleep.c
+++ b/coreutils/usleep.c
@@ -10,7 +10,7 @@
 //config:      bool "usleep (1.1 kb)"
 //config:      default y
 //config:      help
-//config:        usleep is used to pause for a specified number of microseconds.
+//config:      usleep is used to pause for a specified number of microseconds.
 
 //applet:IF_USLEEP(APPLET_NOFORK(usleep, usleep, BB_DIR_BIN, BB_SUID_DROP, usleep))
 
@@ -38,6 +38,13 @@ int usleep_main(int argc UNUSED_PARAM, char **argv)
                bb_show_usage();
        }
 
+       /* Safe wrt NOFORK? (noforks are not allowed to run for
+        * a long time). Try "usleep 99999999" + ^C + "echo $?"
+        * in hush with FEATURE_SH_NOFORK=y.
+        * At least on uclibc, usleep() thanslates to nanosleep()
+        * which returns early on any signal (even caught one),
+        * and uclibc does not loop back on EINTR.
+        */
        usleep(xatou(argv[1]));
 
        return EXIT_SUCCESS;