[PATCH] ncpfs: Use struct pid to track the userspace watchdog process.
This patch converts the tracking of the user space watchdog process from using a pid_t to use struct pid. This makes us safe from pid wrap around issues and prepares the way for the pid namespace. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> --- fs/ncpfs/inode.c | 11 ++++++----- include/linux/ncp_mount.h | 2 +- 2 files changed, 7 insertions(+), 6 deletions(-) diff --git a/fs/ncpfs/inode.c b/fs/ncpfs/inode.c index 47462ac..861d950 100644 --- a/fs/ncpfs/inode.c +++ b/fs/ncpfs/inode.c @@ -331,7 +331,7 @@ static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options) data->flags = 0; data->int_flags = 0; data->mounted_uid = 0; - data->wdog_pid = -1; + data->wdog_pid = NULL; data->ncp_fd = ~0; data->time_out = 10; data->retry_count = 20; @@ -371,7 +371,7 @@ static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options) data->flags = optint; break; case 'w': - data->wdog_pid = optint; + data->wdog_pid = find_get_pid(optint); break; case 'n': data->ncp_fd = optint; @@ -425,7 +425,7 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent) data.flags = md->flags; data.int_flags = NCP_IMOUNT_LOGGEDIN_POSSIBLE; data.mounted_uid = md->mounted_uid; - data.wdog_pid = md->wdog_pid; + data.wdog_pid = find_get_pid(md->wdog_pid); data.ncp_fd = md->ncp_fd; data.time_out = md->time_out; data.retry_count = md->retry_count; @@ -445,7 +445,7 @@ static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent) data.flags = md->flags; data.int_flags = 0; data.mounted_uid = md->mounted_uid; - data.wdog_pid = md->wdog_pid; + data.wdog_pid = find_get_pid(md->wdog_pid); data.ncp_fd = md->ncp_fd; data.time_out = md->time_out; data.retry_count = md->retry_count; @@ -711,7 +711,8 @@ static void ncp_put_super(struct super_block *sb) if (server->info_filp) fput(server->info_filp); fput(server->ncp_filp); - kill_proc(server->m.wdog_pid, SIGTERM, 1); + kill_pid(server->m.wdog_pid, SIGTERM, 1); + put_pid(server->m.wdog_pid); kfree(server->priv.data); kfree(server->auth.object_name); diff --git a/include/linux/ncp_mount.h b/include/linux/ncp_mount.h index f46bddc..a2b549e 100644 --- a/include/linux/ncp_mount.h +++ b/include/linux/ncp_mount.h @@ -75,7 +75,7 @@ struct ncp_mount_data_kernel { unsigned int int_flags; /* internal flags */ #define NCP_IMOUNT_LOGGEDIN_POSSIBLE 0x0001 __kernel_uid32_t mounted_uid; /* Who may umount() this filesystem? */ - __kernel_pid_t wdog_pid; /* Who cares for our watchdog packets? */ + struct pid *wdog_pid; /* Who cares for our watchdog packets? */ unsigned int ncp_fd; /* The socket to the ncp port */ unsigned int time_out; /* How long should I wait after sending a NCP request? */ -- 1.4.4.1.g278f _______________________________________________ Containers mailing list Containers@lists.osdl.org https://lists.osdl.org/mailman/listinfo/containers