[CRIU] [PATCH 1/2] Re-create cgroups if necessary

[Tycho Andersen]

On Mon, Jun 23, 2014 at 10:53:48PM +0400, Andrew Vagin wrote:
>
> Look at my version. It doesn't copy a path in another place.

The copy is sort of unfortunate, strtok writes a null byte to the
string it is tokenizing, which seems impolite to do as callers won't
expect it, even though it might not break anything. I used it because
I prefer using library functions to rolling my own, but I'm happy to
switch it if the copy is a big issue.

Tycho

> 	tok = path;
> 	while (tok = strchr(tok + 1, "/")) {
> 		char c;
> 		if (tok != NULL) {
> 			c = *tok;
> 			*tok = 0;
> 		}
> 
> 		if (mkdirat(fd, path, 0755) < 0 && errno != EEXIST) {
> 			pr_perror("couldn't mkdirpat directory\n");
> 			return -1;
> 		}
> 
> 		if (tok == NULL)
> 			break;
> 		else
> 			*tok = c;
> 	}
> 
> Thanks.