X-Git-Url: https://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Fpipecmd%2Fpipecmd.c;h=afeaf5a0a256de9839b39b522f0cc1e3e8f142a9;hp=d45713b6f8015db478592f5795fdfda474605c3c;hb=46cfc3ad7e2defa96ba04366b60436dfa078ef87;hpb=b98c68473e3317e09ebcc2d7d46e374fc08c531d

diff --git a/ccan/pipecmd/pipecmd.c b/ccan/pipecmd/pipecmd.c
index d45713b6..afeaf5a0 100644
--- a/ccan/pipecmd/pipecmd.c
+++ b/ccan/pipecmd/pipecmd.c
@@ -137,6 +137,13 @@ pid_t pipecmdarr(int *fd_tochild, int *fd_fromchild, int *fd_errfromchild,
 				goto child_errno_fail;
 			close(errfromchild[1]);
 		}
+
+		/* Make (fairly!) sure all other fds are closed. */
+		int max = sysconf(_SC_OPEN_MAX);
+		for (int i = 3; i < max; i++)
+			if (i != execfail[1])
+				close(i);
+
 		execvp(arr[0], arr);
 
 	child_errno_fail: