Re: [PATCH v2 1/2] open: add close_range()
From: Christian Brauner <christian@brauner.io>
Date: 2019-05-23 16:34:55
Also in:
linux-alpha, linux-api, linux-arch, linux-arm-kernel, linux-fsdevel, linux-kselftest, linux-mips, linux-s390, linux-sh, lkml, sparclinux
On Thu, May 23, 2019 at 06:20:05PM +0200, Oleg Nesterov wrote:
On 05/23, Christian Brauner wrote:quoted
+int __close_range(struct files_struct *files, unsigned fd, unsigned max_fd) +{ + unsigned int cur_max; + + if (fd > max_fd) + return -EINVAL; + + rcu_read_lock(); + cur_max = files_fdtable(files)->max_fds; + rcu_read_unlock(); + + /* cap to last valid index into fdtable */ + max_fd = max(max_fd, (cur_max - 1));^^^ Hmm. min() ?
Yes, thanks! Massive brainf*rt on my end, sorry. Christian