[CRIU] [PATCH 2/8] util: Extend reopen_fd_as_safe

[Cyrill Gorcunov]

Our loggin engine prints file:line only at invoke point,
so it's unable to see where exactly reopen_fd_as_safe is
failed.

With this patch the output is more human readable

 | Error (util.c:96): fd 7 already in use (called at files.c:359)

Ideally we need full backtrace here, but it's different task.

Signed-off-by: Cyrill Gorcunov <gorcunov at openvz.org>
---
 include/util.h |    6 +++---
 util.c         |   11 +++++++----
 2 files changed, 10 insertions(+), 7 deletions(-)

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