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Use --root instead of --aufs-root

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When dumping Docker containers using the AUFS graph driver, we can
use the --root option instead of --aufs-root for specifying the
container's root.  This patch obviates the need for --aufs-root
and makes dump CLI more consistent with restore CLI.

Signed-off-by: Saied Kazemi <saied@google.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Saied Kazemi 2014-08-26 14:54:15 -07:00 committed by Pavel Emelyanov
parent 457a70dabb
commit 9eec8b03af
4 changed files with 9 additions and 30 deletions
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7
crtools.c
View File

@ -172,7 +172,6 @@ int main(int argc, char *argv[])
{ "exec-cmd", no_argument, 0, 1059},
{ "manage-cgroups", no_argument, 0, 1060},
{ "cgroup-root", required_argument, 0, 1061},
{ "aufs-root", required_argument, 0, 1062},
{ },
};
@ -401,9 +400,6 @@ int main(int argc, char *argv[])
case 'h':
usage_error = false;
goto usage;
case 1062:
opts.aufs_root = optarg;
break;
default:
goto usage;
}
@ -556,9 +552,6 @@ usage:
" --exec-cmd execute the command specified after '--' on successful\n"
" restore making it the parent of the restored process\n"
"\n"
"* AUFS support (applicable to dump only):\n"
" --aufs-root root pathname of the AUFS filesystem\n"
"\n"
"* Special resources support:\n"
" -x|--" USK_EXT_PARAM " allow external unix connections\n"
" --" SK_EST_PARAM " checkpoint/restore established TCP connections\n"

1
include/cr_options.h
View File

@ -61,7 +61,6 @@ struct cr_options {
char *new_global_cg_root;
struct list_head new_cgroup_roots;
bool aufs; /* auto-deteced, not via cli */
char *aufs_root;
};
extern struct cr_options opts;

21
proc_parse.c
View File

@ -1742,25 +1742,12 @@ out:
*/
int aufs_parse(struct mount_info *new)
{
char *cp;
int ret = 0;
if (!strcmp(new->mountpoint, "./")) {
opts.aufs = true;
if (!opts.aufs_root || strcmp(new->mountpoint, "./"))
return 0;
cp = malloc(strlen(opts.aufs_root) + 1);
if (!cp) {
pr_err("Cannot allocate memory for %s\n", opts.aufs_root);
return -1;
ret = parse_aufs_branches(new);
}
strcpy(cp, opts.aufs_root);
pr_debug("Replacing %s with %s\n", new->root, opts.aufs_root);
free(new->root);
new->root = cp;
parse_aufs_branches(new);
return 0;
return ret;
}

8
sysfs_parse.c
View File

@ -27,7 +27,7 @@
* 90 61 0:33 / / rw,relatime - aufs none rw,si=4476a910a24617e6
*
* To handle this issue, the user has to specify the root of the AUFS
* filesystem with the --aufs-root command line option.
* filesystem with the --root command line option.
*
* 2) /proc/<pid>/map_files: The symlinks are absolute pathnames of the
* corresponding *physical* files in the branch they exist. For example,
@ -287,12 +287,12 @@ int fixup_aufs_vma_fd(struct vma_area *vma)
if (!vma->aufs_rpath)
return -1;
strcpy(vma->aufs_rpath, path);
if (opts.aufs_root) {
vma->aufs_fpath = xmalloc(strlen(opts.aufs_root) + 1 + len + 1);
if (opts.root) {
vma->aufs_fpath = xmalloc(strlen(opts.root) + 1 + len + 1);
if (!vma->aufs_fpath)
return -1;
/* skip ./ in path */
sprintf(vma->aufs_fpath, "%s/%s", opts.aufs_root, &path[2]);
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);
}