mir/criu
2
0
Fork 0
mirror of https://github.com/checkpoint-restore/criu synced 2025-08-30 22:05:36 +00:00
Code Issues Releases Wiki Activity

mount: Read multiple mntns images (if any) on restore

Browse Source 
read_mnt_ns_img() is splited on two parts. The first part enumirates all
namespaces and call the second part, which read a proper image file.

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Andrey Vagin
2014-04-21 18:23:18 +04:00
committed by Pavel Emelyanov
parent 898335ba32
commit fa14bd83f6
1 changed files with 28 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

42
mount.c
View File

@@ -1384,17 +1384,14 @@ static void free_mounts(void)
}
}
static struct mount_info *read_mnt_ns_img(int ns_pid)
static int collect_mnt_from_image(struct mount_info **pms, struct ns_id *nsid)
{
MntEntry *me = NULL;
int img, ret;
struct mount_info *pms = NULL;
pr_info("Populating mount namespace\n");
img = open_image(CR_FD_MNTS, O_RSTR, ns_pid);
img = open_image(CR_FD_MNTS, O_RSTR, nsid->id);
if (img < 0)
return NULL;
return -1;
pr_debug("Reading mountpoint images\n");
@@ -1410,8 +1407,8 @@ static struct mount_info *read_mnt_ns_img(int ns_pid)
if (!pm)
goto err;
pm->next = pms;
pms = pm;
pm->next = *pms;
*pms = pm;
pm->mnt_id = me->mnt_id;
pm->parent_mnt_id = me->parent_mnt_id;
@@ -1462,15 +1459,32 @@ static struct mount_info *read_mnt_ns_img(int ns_pid)
mnt_entry__free_unpacked(me, NULL);
close(img);
return pms;
return 0;
err:
while (pms) {
struct mount_info *pm = pms;
pms = pm->next;
mnt_entry_free(pm);
}
close_safe(&img);
return -1;
}
static struct mount_info *read_mnt_ns_img()
{
struct mount_info *pms = NULL;
struct ns_id *nsid;
nsid = ns_ids;
while (nsid) {
if (nsid->nd != &mnt_ns_desc) {
nsid = nsid->next;
continue;
}
if (collect_mnt_from_image(&pms, nsid))
goto err;
nsid = nsid->next;
}
return pms;
err:
return NULL;
}