diff options
Diffstat (limited to 'tools/perf/util/namespaces.c')
| -rw-r--r-- | tools/perf/util/namespaces.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/tools/perf/util/namespaces.c b/tools/perf/util/namespaces.c index 285d6f30d912..608b20c72a5c 100644 --- a/tools/perf/util/namespaces.c +++ b/tools/perf/util/namespaces.c @@ -66,6 +66,7 @@ int nsinfo__init(struct nsinfo *nsi) char spath[PATH_MAX]; char *newns = NULL; char *statln = NULL; + char *nspid; struct stat old_stat; struct stat new_stat; FILE *f = NULL; @@ -112,8 +113,12 @@ int nsinfo__init(struct nsinfo *nsi) } if (strstr(statln, "NStgid:") != NULL) { - nsi->nstgid = (pid_t)strtol(strrchr(statln, '\t'), - NULL, 10); + nspid = strrchr(statln, '\t'); + nsi->nstgid = (pid_t)strtol(nspid, NULL, 10); + /* If innermost tgid is not the first, process is in a different + * PID namespace. + */ + nsi->in_pidns = (statln + sizeof("NStgid:") - 1) != nspid; break; } } @@ -140,6 +145,7 @@ struct nsinfo *nsinfo__new(pid_t pid) nsi->tgid = pid; nsi->nstgid = pid; nsi->need_setns = false; + nsi->in_pidns = false; /* Init may fail if the process exits while we're trying to look * at its proc information. In that case, save the pid but * don't try to enter the namespace. @@ -166,6 +172,7 @@ struct nsinfo *nsinfo__copy(struct nsinfo *nsi) nnsi->tgid = nsi->tgid; nnsi->nstgid = nsi->nstgid; nnsi->need_setns = nsi->need_setns; + nnsi->in_pidns = nsi->in_pidns; if (nsi->mntns_path) { nnsi->mntns_path = strdup(nsi->mntns_path); if (!nnsi->mntns_path) { @@ -280,3 +287,15 @@ char *nsinfo__realpath(const char *path, struct nsinfo *nsi) return rpath; } + +int nsinfo__stat(const char *filename, struct stat *st, struct nsinfo *nsi) +{ + int ret; + struct nscookie nsc; + + nsinfo__mountns_enter(nsi, &nsc); + ret = stat(filename, st); + nsinfo__mountns_exit(&nsc); + + return ret; +} |