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| author | Alejandro Colomar <alx.manpages@gmail.com> | 2021-09-10 21:33:37 +0200 |
|---|---|---|
| committer | Alejandro Colomar <alx.manpages@gmail.com> | 2021-09-10 21:33:39 +0200 |
| commit | 3396ec7bb2ce1f99ae8f8995af735f35616f2cf6 (patch) | |
| tree | c379e60e40f101ca64d620416524f85db74c2f52 | |
| parent | b584483eba037b2bed86725b52f32b7ab3e327b2 (diff) | |
| download | man-pages-3396ec7bb2ce1f99ae8f8995af735f35616f2cf6.tar.gz | |
clone.2: ERRORS: Add EACCESS with CLONE_INTO_CGROUP + clone3
[Andrew]:
I noticed that clone3 can send the EACCES errno after I wrote a
program that used clone3 with the CLONE_INTO_CGROUP flag.
To me, it's important to know what kind of failure occurred if the
clone3() fails, so I was glad that a unique errno is set for
this case, but it wasn't documented on the clone man page.
[Christian]:
In essence, any error that could occur during regular fs-based migration
at write-time can also occur during CLONE_INTO_CGROUP. The clone3()
manpage just has the inverse of that above statement:
"Note that all of the usual restrictions (described in cgroups(7)) on
placing a process into a version 2 cgroup apply."
Reported-by: Andrew Wock <ajwock@gmail.com>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
| -rw-r--r-- | man2/clone.2 | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/man2/clone.2 b/man2/clone.2 index e381da165d..90db92ad66 100644 --- a/man2/clone.2 +++ b/man2/clone.2 @@ -1209,6 +1209,16 @@ in the caller's context, no child process is created, and is set to indicate the error. .SH ERRORS .TP +.BR EACCES " (" clone3 "() only)" +.B CLONE_INTO_CGROUP +was specified in +.IR cl_args.flags , +but the restrictions (described in +.BR cgroups (7)) +on placing the child process into the version 2 cgroup referred to by +.I cl_args.cgroup +are not met. +.TP .B EAGAIN Too many processes are already running; see .BR fork (2). |