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[Qemu-devel] [PATCH v5 09/27] osdep: Introduce qemu_dup


From: Fam Zheng
Subject: [Qemu-devel] [PATCH v5 09/27] osdep: Introduce qemu_dup
Date: Tue, 17 May 2016 15:35:18 +0800

This takes care both the CLOEXEC flag and fd-path mapping for image
locking.

Signed-off-by: Fam Zheng <address@hidden>
---
 include/qemu/osdep.h | 1 +
 util/osdep.c         | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h
index 81913a7..0e51279 100644
--- a/include/qemu/osdep.h
+++ b/include/qemu/osdep.h
@@ -266,6 +266,7 @@ int qemu_madvise(void *addr, size_t len, int advice);
 int qemu_open(const char *name, int flags, ...);
 int qemu_close(int fd);
 int qemu_lock_fd(int fd, int64_t start, int64_t len, bool exclusive);
+int qemu_dup(int fd);
 int qemu_unlock_fd(int fd, int64_t start, int64_t len);
 
 #if defined(__HAIKU__) && defined(__i386__)
diff --git a/util/osdep.c b/util/osdep.c
index 9e5d7fa..966bc32 100644
--- a/util/osdep.c
+++ b/util/osdep.c
@@ -267,6 +267,12 @@ int qemu_unlock_fd(int fd, int64_t start, int64_t len)
     return qemu_lock_fcntl(fd, start, len, F_UNLCK);
 }
 
+int qemu_dup(int fd)
+{
+    return qemu_dup_flags(fd, 0);
+}
+
+
 /*
  * A variant of write(2) which handles partial write.
  *
-- 
2.8.2




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