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Subject: [PATCH] policycoreutils: make O_CLOEXEC optional
Various commits in the selinux tree in the current release added O_CLOEXEC
to open() calls in an attempt to address file descriptor leaks as
described:
http://danwalsh.livejournal.com/53603.html
However O_CLOEXEC isn't available on all platforms, so make it a
compile-time option and generate a warning when it is not available. The
actual impact of leaking these file descriptors is minimal, though it does
produce curious AVC Denied messages.
Uptream-Status: Inappropriate [O_CLOEXEC has been in Linux since 2007 and POSIX since 2008]
Signed-off-by: Joe MacDonald <joe.macdonald@windriver.com>
Signed-off-by: Wenzong Fan <wenzong.fan@windriver.com>
---
user.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/user.c b/user.c
index 2c28676..6235772 100644
--- a/user.c
+++ b/user.c
@@ -202,7 +202,13 @@ static int local_server() {
perror("asprintf");
return -1;
}
- local_lock_fd = open(ptr, O_CREAT | O_WRONLY | O_NOFOLLOW | O_CLOEXEC, S_IRUSR | S_IWUSR);
+ local_lock_fd = open(ptr, O_CREAT | O_WRONLY | O_NOFOLLOW
+ #ifdef O_CLOEXEC
+ | O_CLOEXEC
+ #else
+ #warning O_CLOEXEC undefined on this platform, this may leak file descriptors
+ #endif
+ , S_IRUSR | S_IWUSR);
if (debug_mode)
g_warning ("Lock file: %s", ptr);
--
1.7.9.5
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