[Xen-devel] [PATCH 1/2] libxl: Introduce libxl__fd_set_cloexec.

[Anthony PERARD <anthony.perard@xxxxxxxxxx>]

Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
---
 tools/libxl/libxl_internal.c |   13 +++++++++++++
 tools/libxl/libxl_internal.h |    1 +
 2 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/tools/libxl/libxl_internal.c b/tools/libxl/libxl_internal.c
index 0fb2315..56e6618 100644
--- a/tools/libxl/libxl_internal.c
+++ b/tools/libxl/libxl_internal.c
@@ -276,3 +276,16 @@ int libxl__file_reference_unmap(libxl_file_reference *f)
 
        return ERROR_FAIL;
 }
+
+int libxl__fd_set_cloexec(int fd)
+{
+    int flags = 0;
+
+    if ((flags = fcntl(fd, F_GETFD)) == -1) {
+        flags = 0;
+    }
+    if ((flags & FD_CLOEXEC)) {
+        return 0;
+    }
+    return fcntl(fd, F_SETFD, flags | FD_CLOEXEC);
+}
diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index cef2036..18a673e 100644
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -387,6 +387,7 @@ _hidden int libxl__error_set(libxl__gc *gc, int code);
 
 _hidden int libxl__file_reference_map(libxl_file_reference *f);
 _hidden int libxl__file_reference_unmap(libxl_file_reference *f);
+_hidden int libxl__fd_set_cloexec(int fd);
 
 _hidden int libxl__e820_alloc(libxl_ctx *ctx, uint32_t domid, 
libxl_domain_config *d_config);
 
-- 
Anthony PERARD


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