X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=blobdiff_plain;f=src%2Fstdio%2Fpopen.c;h=4f9d6e9ec92a95b85507d2a42dc6187b1809898b;hp=1d33e9d692fae195b41af7ca8179e972c155c710;hb=9c21f4342c787e04a9e31ad8a1d87a65c89968ca;hpb=0b44a0315b47dd8eced9f3b7f31580cf14bbfc01

diff --git a/src/stdio/popen.c b/src/stdio/popen.c
index 1d33e9d6..4f9d6e9e 100644
--- a/src/stdio/popen.c
+++ b/src/stdio/popen.c
@@ -1,4 +1,11 @@
 #include "stdio_impl.h"
+#include "syscall.h"
+
+static inline void nc_close(int fd)
+{
+	__syscall(SYS_close, fd);
+}
+#define close(x) nc_close(x)
 
 FILE *popen(const char *cmd, const char *mode)
 {
@@ -31,9 +38,9 @@ FILE *popen(const char *cmd, const char *mode)
 		close(p[1]);
 		return NULL;
 	case 0:
-		dup2(p[1-op], 1-op);
-		close(p[0]);
-		close(p[1]);
+		if (dup2(p[1-op], 1-op) < 0) _exit(127);
+		if (p[0] != 1-op) close(p[0]);
+		if (p[1] != 1-op) close(p[1]);
 		execl("/bin/sh", "sh", "-c", cmd, (char *)0);
 		_exit(127);
 	}