If the server is executing in a pid namespace then then giving it the global pid of the process making the request is useless. Translate the pid into the server's pid namespace.
Signed-off-by: Seth Forshee <seth.fors...@canonical.com> --- fs/fuse/dev.c | 9 +++++---- fs/fuse/fuse_i.h | 4 ++++ fs/fuse/inode.c | 2 ++ 3 files changed, 11 insertions(+), 4 deletions(-) diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index 219d1e685183..db781ff6392b 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -20,6 +20,7 @@ #include <linux/swap.h> #include <linux/splice.h> #include <linux/aio.h> +#include <linux/sched.h> MODULE_ALIAS_MISCDEV(FUSE_MINOR); MODULE_ALIAS("devname:fuse"); @@ -124,11 +125,11 @@ static void __fuse_put_request(struct fuse_req *req) atomic_dec(&req->count); } -static void fuse_req_init_context(struct fuse_req *req) +static void fuse_req_init_context(struct fuse_conn *fc, struct fuse_req *req) { req->in.h.uid = from_kuid_munged(&init_user_ns, current_fsuid()); req->in.h.gid = from_kgid_munged(&init_user_ns, current_fsgid()); - req->in.h.pid = current->pid; + req->in.h.pid = pid_nr_ns(task_pid(current), fc->pid_ns); } static bool fuse_block_alloc(struct fuse_conn *fc, bool for_background) @@ -168,7 +169,7 @@ static struct fuse_req *__fuse_get_req(struct fuse_conn *fc, unsigned npages, goto out; } - fuse_req_init_context(req); + fuse_req_init_context(fc, req); req->waiting = 1; req->background = for_background; return req; @@ -257,7 +258,7 @@ struct fuse_req *fuse_get_req_nofail_nopages(struct fuse_conn *fc, if (!req) req = get_reserved_req(fc, file); - fuse_req_init_context(req); + fuse_req_init_context(fc, req); req->waiting = 1; req->background = 0; return req; diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index e8e47a6ab518..a3ded071e2c6 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -22,6 +22,7 @@ #include <linux/rbtree.h> #include <linux/poll.h> #include <linux/workqueue.h> +#include <linux/pid_namespace.h> /** Max number of pages that can be used in a single read request */ #define FUSE_MAX_PAGES_PER_REQ 32 @@ -386,6 +387,9 @@ struct fuse_conn { /** The group id for this mount */ kgid_t group_id; + /** The pid namespace for this mount */ + struct pid_namespace *pid_ns; + /** The fuse mount flags for this mount */ unsigned flags; diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 754dcf23de8a..3655152f770d 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -604,6 +604,7 @@ void fuse_conn_init(struct fuse_conn *fc) fc->initialized = 0; fc->attr_version = 1; get_random_bytes(&fc->scramble_key, sizeof(fc->scramble_key)); + fc->pid_ns = get_pid_ns(task_active_pid_ns(current)); } EXPORT_SYMBOL_GPL(fuse_conn_init); @@ -944,6 +945,7 @@ static void fuse_send_init(struct fuse_conn *fc, struct fuse_req *req) static void fuse_free_conn(struct fuse_conn *fc) { + put_pid_ns(fc->pid_ns); kfree_rcu(fc, rcu); } -- 1.9.1 _______________________________________________ lxc-devel mailing list lxc-devel@lists.linuxcontainers.org http://lists.linuxcontainers.org/listinfo/lxc-devel