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-rw-r--r--Src/Builtins/rlimits.awk1
-rw-r--r--Src/Builtins/rlimits.c11
2 files changed, 12 insertions, 0 deletions
diff --git a/Src/Builtins/rlimits.awk b/Src/Builtins/rlimits.awk
index fe2d0e931..e9c576c66 100644
--- a/Src/Builtins/rlimits.awk
+++ b/Src/Builtins/rlimits.awk
@@ -59,6 +59,7 @@ BEGIN {limidx = 0}
 	    if (limnam == "NPTS")    { msg[limnum] = "Npseudoterminals" }
 	    if (limnam == "SWAP")    { msg[limnum] = "Mswapsize" }
 	    if (limnam == "KQUEUES") { msg[limnum] = "Nkqueues" }
+	    if (limnam == "UMTXP")   { msg[limnum] = "Numtxp" }
         }
     }
 }
diff --git a/Src/Builtins/rlimits.c b/Src/Builtins/rlimits.c
index 29f97b41d..6b552f3a9 100644
--- a/Src/Builtins/rlimits.c
+++ b/Src/Builtins/rlimits.c
@@ -413,6 +413,12 @@ printulimit(char *nam, int lim, int hard, int head)
 	    printf("-k: kqueues                         ");
 	break;
 # endif /* HAVE_RLIMIT_KQUEUES */
+# ifdef HAVE_RLIMIT_UMTXP
+    case RLIMIT_UMTXP:
+	if (head)
+	    printf("-o: umtx shared locks               ");
+	break;
+# endif /* HAVE_RLIMIT_UMTXP */
     default:
 	if (head)
 	    printf("-N %2d:                              ", lim);
@@ -895,6 +901,11 @@ bin_ulimit(char *name, char **argv, UNUSED(Options ops), UNUSED(int func))
 		    res = RLIMIT_PTHREAD;
 		    break;
 # endif
+# ifdef HAVE_RLIMIT_UMTXP
+		case 'o':
+		    res = RLIMIT_UMTXP;
+		    break;
+# endif
 		default:
 		    /* unrecognised limit */
 		    zwarnnam(name, "bad option: -%c", *options);