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servicefd: add a service fd for current root

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It's already used for dumping files and it will be used for restoring,
so it should be service fd to avoid intersection with restored
descriptors.

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Andrey Vagin
2014-04-16 09:04:24 +04:00
committed by Pavel Emelyanov
parent 302591aa05
commit 87a49bdfaf
6 changed files with 32 additions and 6 deletions
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3
sk-unix.c
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@@ -403,6 +403,7 @@ static int unix_collect_one(const struct unix_diag_msg *m,
struct stat st;
char rpath[PATH_MAX];
bool drop_path = false;
int mntns_root;
if (name[0] != '/') {
pr_warn("Relative bind path '%s' "
@@ -416,6 +417,8 @@ static int unix_collect_one(const struct unix_diag_msg *m,
goto skip;
}
mntns_root = get_service_fd(ROOT_FD_OFF);
uv = RTA_DATA(tb[UNIX_DIAG_VFS]);
snprintf(rpath, sizeof(rpath), ".%s", name);
if (fstatat(mntns_root, rpath, &st, 0)) {