Re: [libvirt] [PATCH 1/6] Add virFileIsMountPoint function

From: "Daniel P. Berrange" <berrange(a)redhat.com&gt; Add a function for efficiently checking if a path is a filesystem mount point. NB will not work for bind mounts, only true filesystem mounts. Signed-off-by: Daniel P. Berrange <berrange(a)redhat.com&gt; ---

+ * + * Note that this will not detect bind mounts of dirs/files, + * only true filesystem mounts. + */ +int virFileIsMountPoint(const char *file) +{ + char *parent = NULL; + char *tmp; + int ret = -1; + struct stat sb1, sb2; + + if (VIR_STRDUP_QUIET(parent, file) < 0) + goto cleanup; + + if (!(tmp = strrchr(parent, '/'))) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("Could not find '/' in '%s'"), + file); + goto cleanup; + } + + *tmp = '\0';

+ + VIR_DEBUG("Comparing '%s' to '%s'", file, parent); + + if (stat(file, &sb1) < 0) {