Mirrors/criu
1
0
Fork 0
mirror of https://github.com/checkpoint-restore/criu.git synced 2026-01-23 10:16:41 +00:00
Code Issues Projects Releases Wiki Activity

Fix AUFS pathname handling when branch is not exposed

Browse source 
The code that fixes up AUFS pathnames associated with vma entries (see
commit d8b41b6525) should handle cases where an entry does not expose
the branch pathname (e.g., pointing to a device like /dev/zero).

Signed-off-by: Saied Kazemi <saied@google.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Saied Kazemi 2015-01-19 13:05:12 +03:00 • committed by Pavel Emelyanov
parent 7b4a264e28
commit 490ca71866
1 changed files with 12 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

14
sysfs_parse.c
View file

@ -272,6 +272,7 @@ err:
*/
int fixup_aufs_vma_fd(struct vma_area *vma)
{
char *file;
char path[PATH_MAX];
int len;
@ -284,7 +285,15 @@ int fixup_aufs_vma_fd(struct vma_area *vma)
if (len < 0)
return -1;
if (len > 0) {
if (len == 0) {
/*
* The vma is associated with a map_files entry
* that does not expose the branch pathname
* (e.g., /dev/zero). In this case, we can use
* the path.
*/
file = &path[1];
} else {
vma->aufs_rpath = xmalloc(len + 2);
if (!vma->aufs_rpath)
return -1;
@ -297,9 +306,10 @@ int fixup_aufs_vma_fd(struct vma_area *vma)
sprintf(vma->aufs_fpath, "%s/%s", opts.root, &path[2]);
}
pr_debug("Saved AUFS paths %s and %s\n", vma->aufs_rpath, vma->aufs_fpath);
file = vma->aufs_fpath;
}
if (stat(vma->aufs_fpath, vma->vmst) < 0) {
if (stat(file, vma->vmst) < 0) {
pr_perror("Failed stat on map %"PRIx64" (%s)",
vma->e->start, vma->aufs_fpath);
return -1;