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19 Commits

Author SHA1 Message Date
Akihiro Suda f103de57ec main: support rootless mode in userns 
Running rootless containers in userns is useful for mounting
filesystems (e.g. overlay) with mapped euid 0, but without actual root
privilege.

Usage: (Note that `unshare --mount` requires `--map-root-user`)

  user$ mkdir lower upper work rootfs
  user$ curl http://dl-cdn.alpinelinux.org/alpine/v3.7/releases/x86_64/alpine-minirootfs-3.7.0-x86_64.tar.gz | tar Cxz ./lower || ( true; echo "mknod errors were ignored" )
  user$ unshare --mount --map-root-user
  mappedroot# runc spec --rootless
  mappedroot# sed -i 's/"readonly": true/"readonly": false/g' config.json
  mappedroot# mount -t overlay -o lowerdir=./lower,upperdir=./upper,workdir=./work overlayfs ./rootfs
  mappedroot# runc run foo

Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>
 2018-05-10 12:16:43 +09:00
Aleksa Sarai d2f49696b0
runc: add support for rootless containers 
This enables the support for the rootless container mode. There are many
restrictions on what rootless containers can do, so many different runC
commands have been disabled:

* runc checkpoint
* runc events
* runc pause
* runc ps
* runc restore
* runc resume
* runc update

The following commands work:

* runc create
* runc delete
* runc exec
* runc kill
* runc list
* runc run
* runc spec
* runc state

In addition, any specification options that imply joining cgroups have
also been disabled. This is due to support for unprivileged subtree
management not being available from Linux upstream.

Signed-off-by: Aleksa Sarai <asarai@suse.de>
 2017-03-23 20:45:24 +11:00
CuiHaozhi 08937e97bc ps: --format value check 
Signed-off-by: CuiHaozhi <cuihaozhi@chinacloud.com.cn>
 2017-02-22 00:20:23 +08:00
Mrunal Patel 84a3bd250c Simplify error handling on function return 
Signed-off-by: Mrunal Patel <mrunalp@gmail.com>
 2017-01-06 15:57:31 -08:00
Zhang Wei b517076907 Check args numbers before application start 
Add a general args number validator for all client commands.

Signed-off-by: Zhang Wei <zhangwei555@huawei.com>
 2016-11-29 11:18:51 +08:00
rajasec 528bf3718d ps error logging improvement 
Signed-off-by: rajasec <rajasec79@gmail.com>

ps error logging improvement

Signed-off-by: rajasec <rajasec79@gmail.com>
 2016-10-17 20:50:33 +05:30
Wang Long 1a6391b03f Revert "simplify ps command" 
This reverts commit 067ce21f7a.

Signed-off-by: Wang Long <long.wanglong@huawei.com>
 2016-10-10 09:27:07 +08:00
Wang Long 067ce21f7a simplify ps command 
the `-p pidlist` flag of `ps` command selects the process whose process
ID numbers apper in `pidlist`.[1]

This patch use `-p pidlist` to filter process which we want.

[1]: http://man7.org/linux/man-pages/man1/ps.1.html

Signed-off-by: Wang Long <long.wanglong@huawei.com>
 2016-09-30 14:54:30 +08:00
Shukui Yang 993126259c Remove the workaround which add a -- flag to runc ps command and add integration for ps -eaf 
Signed-off-by: Shukui Yang <yangshukui@huawei.com>
 2016-09-24 12:20:52 +08:00
Shukui Yang d5dd8931c5 fix ps/exec command parameter error 
Signed-off-by: Shukui Yang <yangshukui@huawei.com>
 2016-09-18 09:34:06 +08:00
Zhao Lei cdb552d341 ps: Support muitiple ps arguments 
Before patch:
 | # ./runc ps test -- -e -f
 |   PID TTY          TIME CMD
 | 29046 pts/2    00:00:00 sh  <-- The -f option was skipped
 | #

After patch:
 | # ./runc ps test -- -e -f
 | UID        PID  PPID  C STIME TTY          TIME CMD
 | root     29046 29038  0 Jul06 pts/2    00:00:00 sh
 | #

Reported-by: Qiang Huang <h.huangqiang@huawei.com>

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
 2016-07-07 18:42:47 +08:00
Zhao Lei f5a95fa244 cli: Workaround for ps's argument 
Currently, ps command can not support argument:
(But following usage is in manual)
 | # ./runc ps 123 -ef
 | Incorrect Usage.
 |
 | NAME:
 |    runc ps - ps displays the processes running inside a container
 |
 | USAGE:
 |    runc ps [command options] <container-id> [ps options]
 |
 | OPTIONS:
 |    --format value, -f value  select one of: table or json
 |
 | flag provided but not defined: -ef
 | #

Instead of using odd command like:
 | # ./runc ps -- 123 -ef

We can make it seems little better:
 | # ./runc ps 123 -- -ef
 | UID        PID  PPID  C STIME TTY          TIME CMD
 | root     29046 29038  0 11:18 pts/2    00:00:00 sh
 | #

This patch also fixed manual which can not working in current
code.

Closes #788

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
 2016-07-07 18:17:13 +08:00
Zhao Lei 71929e0f9d Fix ps argument manual 
Argument of "ps options" for ps command is a optional parameter.
Should use [] instead of <> in manual.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
 2016-06-17 19:07:30 +08:00
Mrunal Patel a753b06645 Replace github.com/codegangsta/cli by github.com/urfave/cli 
The package got moved to a different repository

Signed-off-by: Mrunal Patel <mrunalp@gmail.com>
 2016-06-06 11:47:20 -07:00
Hushan Jia 772505aa24 cleanup ps.go 
The code is called in both cases so remove the duplicate one.

Signed-off-by: Hushan Jia <hushan.jia@gmail.com>
 2016-06-06 02:36:11 +08:00
Zhao Lei 34d100f970 manual: add manual for ps command 
This patch add manual for ps command, and remove remove example
for --format command, which is not necessary.

Suggested-by: Aleksa Sarai <asarai@suse.de>
Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
 2016-05-25 17:32:14 +08:00
Qiang Huang 8477638aab Update cli package 
The old one has bug when showing help message for IntFlags.

Signed-off-by: Qiang Huang <h.huangqiang@huawei.com>
 2016-05-10 13:58:09 +08:00
Michael Crosby bb8591138b Add json format to ps command 
For programatic parsing add a json format option to the new `runc ps`
command.

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
 2016-04-25 15:21:07 -07:00
Qiang Huang 8cf9ca4bcf Add ps command 
Signed-off-by: Qiang Huang <h.huangqiang@huawei.com>
 2016-04-22 08:06:35 +08:00