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unix-socket: remove stale socket before calling chdir()

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unix_stream_listen() is given a path.  It calls unix_sockaddr_init(),
which in turn can call chdir().  After that a relative path doesn't
mean the same as before.  Any use of the original path should thus
happen before that call.  For that reason, unlink the given path
(to get rid of a possibly existing stale socket) right at the
beginning of the function.

Noticed-by: Karsten Blees <karsten.blees@gmail.com>
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
René Scharfe 2014-07-20 10:00:41 +02:00 committed by Junio C Hamano
parent 8c2cfa5544
commit 2869b3e5da
1 changed files with 2 additions and 1 deletions
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3
unix-socket.c
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@ -99,11 +99,12 @@ int unix_stream_listen(const char *path)
struct sockaddr_un sa;
struct unix_sockaddr_context ctx;
unlink(path);
if (unix_sockaddr_init(&sa, path, &ctx) < 0)
return -1;
fd = unix_stream_socket();
unlink(path);
if (bind(fd, (struct sockaddr *)&sa, sizeof(sa)) < 0)
goto fail;