On Fri, Aug 12, 2016 at 11:09:04PM +0200, Michał Bartoszkiewicz wrote:
> End of strace output:
> open("/proc/31676", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 4
> fstat(4, {st_mode=S_IFDIR|0555, st_size=0, ...}) = 0
> fstat(4, {st_mode=S_IFDIR|0555, st_size=0, ...}) = 0
> openat(4, "stat", O_RDONLY) = 5
> fcntl(5, F_GETFL) = 0x8000 (flags O_RDONLY|O_LARGEFILE)
> fstat(5, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
> read(5, "31676 (ext4-rsv-conver) S 2 0 0 "..., 1024) = 169
> newfstatat(4, "ns/mnt", {st_mode=S_IFREG|0444, st_size=0, ...}, 0) = 0
> newfstatat(4, "ns/net", {st_mode=S_IFREG|0444, st_size=0, ...}, 0) = 0
> newfstatat(4, "ns/pid", {st_mode=S_IFREG|0444, st_size=0, ...}, 0) = 0
> newfstatat(4, "ns/uts", {st_mode=S_IFREG|0444, st_size=0, ...}, 0) = 0
> newfstatat(4, "ns/ipc", {st_mode=S_IFREG|0444, st_size=0, ...}, 0) = 0
> newfstatat(4, "ns/user", 0x7ffd30d84020, 0) = -1 ENOENT (No such file
> or directory)
> close(5) = 0
> close(4) = 0
> getdents(3, /* 0 entries */, 32768) = 0
> close(3) = 0
> close(1) = 0
> close(2) = 0
> exit_group(0) = ?
> +++ exited with 0 +++
>
> I have user namespaces disabled in my kernel (CONFIG_USER_NS=n).
> I thinkthe reason for the empty output is that the ENOENT for ns/user
> causes read_process to ignore the process completely.
Good point.
Fixed (Well, I have no such kernel, so please test it).
Thanks!
Karel
--
Karel Zak <kzak@xxxxxxxxxx>
http://karelzak.blogspot.com
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