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pidfd: Replace open-coded receive_fd()

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Replace the open-coded version of receive_fd() with a call to the
new helper.

Thanks to Vamshi K Sthambamkadi <vamshi.k.sthambamkadi@gmail.com> for
catching a missed fput() in an earlier version of this patch.

Cc: Christoph Hellwig <hch@lst.de>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Sargun Dhillon <sargun@sargun.me>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
This commit is contained in:
Kees Cook 2020-06-09 16:21:38 -07:00
parent deefa7f350
commit 910d2f16ac
1 changed files with 2 additions and 13 deletions
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15
kernel/pid.c
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@ -636,19 +636,8 @@ static int pidfd_getfd(struct pid *pid, int fd)
if (IS_ERR(file))
return PTR_ERR(file);
ret = security_file_receive(file);
if (ret) {
fput(file);
return ret;
}
ret = get_unused_fd_flags(O_CLOEXEC);
if (ret < 0) {
fput(file);
} else {
__receive_sock(file);
fd_install(ret, file);
}
ret = receive_fd(file, O_CLOEXEC);
fput(file);
return ret;
}