crtools: dump pstree to image file without pid number

Pid number is redundant - this file is one for the whole tree.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

cr-dump.c

@@ -1151,7 +1151,7 @@ static int dump_pstree(pid_t pid, const struct list_head *pstree_list)
 	pr_info("Dumping pstree (pid: %d)\n", pid);
 	pr_info("----------------------------------------\n");
 
-	pstree_fd = open_image(CR_FD_PSTREE, O_RDWR | O_CREAT | O_EXCL, pid);
+	pstree_fd = open_image(CR_FD_PSTREE, O_RDWR | O_CREAT | O_EXCL);
 	if (pstree_fd < 0)
 		return -1;
 

cr-restore.c

@@ -1167,7 +1167,7 @@ static int restore_task_with_children(void *_arg)
 
 	pr_info("%d: Starting restore\n", me->pid);
 
-	fd = open_image_ro_nocheck(FMT_FNAME_PSTREE, pstree_pid);
+	fd = open_image_ro_nocheck(FMT_FNAME_PSTREE);
 	if (fd < 0) {
 		pr_perror("%d: Can't reopen pstree image", me->pid);
 		exit(1);
@@ -1291,7 +1291,7 @@ static int restore_all_tasks(pid_t pid, struct cr_options *opts)
 	int pstree_fd = -1;
 	u32 type = 0;
 
-	pstree_fd = open_image_ro(CR_FD_PSTREE, pstree_pid);
+	pstree_fd = open_image_ro(CR_FD_PSTREE);
 	if (pstree_fd < 0)
 		return -1;
 

cr-show.c

@@ -561,16 +561,20 @@ static int cr_show_all(unsigned long pid, struct cr_options *opts)
 	struct cr_fdset *cr_fdset = NULL;
 	struct pstree_item *item = NULL;
 	LIST_HEAD(pstree_list);
-	int i, ret = -1;
+	int i, ret = -1, pstree_fd;
 
-	cr_fdset = cr_show_fdset_open(pid, CR_FD_DESC_PSTREE | CR_FD_DESC_SK_QUEUES);
-	if (!cr_fdset)
+	pstree_fd = open_image_ro(CR_FD_PSTREE);
+	if (pstree_fd)
 		goto out;
 
-	ret = show_pstree(cr_fdset->fds[CR_FD_PSTREE], &pstree_list);
+	ret = show_pstree(pstree_fd, &pstree_list);
 	if (ret)
 		goto out;
 
+	cr_fdset = cr_show_fdset_open(pid, CR_FD_DESC_SK_QUEUES);
+	if (!cr_fdset)
+		goto out;
+
 	ret = show_sk_queues(cr_fdset->fds[CR_FD_SK_QUEUES]);
 	if (ret)
 		goto out;

include/crtools.h

@@ -83,7 +83,7 @@ extern struct cr_fd_desc_tmpl fdset_template[CR_FD_MAX];
 #define FMT_FNAME_CORE		"core-%d.img"
 #define FMT_FNAME_VMAS		"vmas-%d.img"
 #define FMT_FNAME_PIPES		"pipes-%d.img"
-#define FMT_FNAME_PSTREE	"pstree-%d.img"
+#define FMT_FNAME_PSTREE	"pstree.img"
 #define FMT_FNAME_SIGACTS	"sigacts-%d.img"
 #define FMT_FNAME_UNIXSK	"unixsk-%d.img"
 #define FMT_FNAME_INETSK	"inetsk-%d.img"