From: Nikolaus Rath <Nikolaus@rath.org>
Date: Mon, 3 Oct 2016 04:36:12 +0000 (-0700)
Subject: Document that client pid/gid/uid may be zero.
X-Git-Tag: fuse-2.9.8~10
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=c2d0e65057aa3b0627ee06711f8a6408accee63c;p=qemu-gpiodev%2Flibfuse.git

Document that client pid/gid/uid may be zero.

Fixes #67.
---

diff --git a/include/fuse_lowlevel.h b/include/fuse_lowlevel.h
index 8262d38..54bb84b 100644
--- a/include/fuse_lowlevel.h
+++ b/include/fuse_lowlevel.h
@@ -106,7 +106,14 @@ struct fuse_entry_param {
 	double entry_timeout;
 };
 
-/** Additional context associated with requests */
+/**
+ * Additional context associated with requests.
+ *
+ * Note that the reported client uid, gid and pid may be zero in some
+ * situations. For example, if the FUSE file system is running in a
+ * PID or user namespace but then accessed from outside the namespace,
+ * there is no valid uid/pid/gid that could be reported.
+ */
 struct fuse_ctx {
 	/** User ID of the calling process */
 	uid_t uid;