[PATCH 16/27] proc: Add fs_context support to procfs [ver #5]
flat view
From: viro@ZenIV.linux.org.uk (Al Viro)
Date: 2017-06-15 10:14:43
Also in:
linux-fsdevel, linux-nfs, lkml
On Wed, Jun 14, 2017 at 04:17:43PM +0100, David Howells wrote:
quoted hunk ↗ jump to hunk
int pid_ns_prepare_proc(struct pid_namespace *ns) { + struct proc_fs_context *ctx; + struct fs_context *fc; struct vfsmount *mnt; + int ret; + + fc = vfs_new_fs_context(&proc_fs_type, NULL, 0, FS_CONTEXT_FOR_NEW); + if (IS_ERR(fc)) + return PTR_ERR(fc); + + ctx = container_of(fc, struct proc_fs_context, fc); + if (ctx->pid_ns != ns) { + put_pid_ns(ctx->pid_ns); + get_pid_ns(ns); + ctx->pid_ns = ns; + } + + ret = vfs_get_tree(fc); + if (ret < 0) { + put_fs_context(fc); + return ret; + } - mnt = kern_mount_data(&proc_fs_type, ns); + mnt = kern_mount_data_fc(fc); + put_fs_context(fc);
Same as with ipc; do you need to go through dynamic allocation, container_of, patching it up, etc.? -- To unsubscribe from this list: send the line "unsubscribe linux-security-module" in the body of a message to majordomo at vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html