First commit

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 32 insertions, 0 deletions

diff --git a/libexec_renumber_fd.c b/libexec_renumber_fd.c
new file mode 100644
index 0000000..d9350fa
--- /dev/null
+++ b/libexec_renumber_fd.c
@@ -0,0 +1,32 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+#ifndef TEST
+
+
+int
+libexec_renumber_fd(struct libexec_command *cmd, int fd, int old_fd)
+{
+	if (fd == old_fd) {
+		if (!cmd || fd < 0) {
+			errno = EINVAL;
+			return -1;
+		}
+		return 0;
+	}
+	if (libexec_dup(cmd, fd, old_fd))
+		return -1;
+	if (libexec_close(cmd, old_fd)) {
+		cmd->nplumings -= 1;
+		if (!cmd->nplumings) {
+			free(cmd->plumings);
+			cmd->plumings = NULL;
+		}
+		return -1;
+	}
+	return 0;
+}
+
+
+#else
+LIBEXEC_CONST__ int main(void) {return 0;} /* TODO test */
+#endif