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| author |   Olivier Brunel <jjk@jjacky.com> | 2018-10-20 19:39:56 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-10-22 19:37:36 -0700 |
| commit | 876dcf2f3aaa0f68d437b368b93a4c4b81521191 (patch) | |
| tree | 839b76ae222a0ecd942d4af9a6099336b366d549 /include/linux/umh.h | |
| parent | qlcnic: fix a return in qlcnic_dcb_get_capability() (diff) | |
| download | wireguard-linux-876dcf2f3aaa0f68d437b368b93a4c4b81521191.tar.xz wireguard-linux-876dcf2f3aaa0f68d437b368b93a4c4b81521191.zip | |
umh: Add command line to user mode helpers
User mode helpers were spawned without a command line, and because
an empty command line is used by many tools to identify processes as
kernel threads, this could cause some issues.
Notably during killing spree on shutdown, since such helper would then
be skipped (i.e. not killed) which would result in the process remaining
alive, and thus preventing unmouting of the rootfs (as experienced with
the bpfilter umh).
Fixes: 449325b52b7a ("umh: introduce fork_usermode_blob() helper")
Signed-off-by: Olivier Brunel <jjk@jjacky.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/umh.h')
| -rw-r--r-- | include/linux/umh.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/umh.h b/include/linux/umh.h index 5c812acbb80a..235f51b62c71 100644 --- a/include/linux/umh.h +++ b/include/linux/umh.h @@ -44,6 +44,7 @@ struct subprocess_info *call_usermodehelper_setup_file(struct file *file, int (*init)(struct subprocess_info *info, struct cred *new), void (*cleanup)(struct subprocess_info *), void *data); struct umh_info { + const char *cmdline; struct file *pipe_to_umh; struct file *pipe_from_umh; pid_t pid; |