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Introduce a virFileDeleteTree method
Introduce a method virFileDeleteTree for recursively deleting an entire directory tree Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
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@ -1264,6 +1264,7 @@ virEventPollUpdateTimeout;
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# util/virfile.h
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virFileClose;
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virFileDeleteTree;
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virFileDirectFdFlag;
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virFileFclose;
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virFileFdopen;
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@ -644,3 +644,86 @@ int virFileLoopDeviceAssociate(const char *file,
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}
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#endif /* __linux__ */
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/**
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* virFileDeleteTree:
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*
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* Recursively deletes all files / directories
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* starting from the directory @dir. Does not
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* follow symlinks
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*
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* NB the algorithm is not efficient, and is subject to
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* race conditions which can be exploited by malicious
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* code. It should not be used in any scenarios where
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* performance is important, or security is critical.
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*/
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int virFileDeleteTree(const char *dir)
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{
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DIR *dh = opendir(dir);
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struct dirent *de;
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char *filepath = NULL;
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int ret = -1;
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if (!dh) {
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virReportSystemError(errno, _("Cannot open dir '%s'"),
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dir);
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return -1;
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}
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errno = 0;
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while ((de = readdir(dh)) != NULL) {
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struct stat sb;
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if (STREQ(de->d_name, ".") ||
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STREQ(de->d_name, ".."))
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continue;
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if (virAsprintf(&filepath, "%s/%s",
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dir, de->d_name) < 0) {
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virReportOOMError();
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goto cleanup;
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}
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if (lstat(filepath, &sb) < 0) {
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virReportSystemError(errno, _("Cannot access '%s'"),
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filepath);
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goto cleanup;
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}
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if (S_ISDIR(sb.st_mode)) {
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if (virFileDeleteTree(filepath) < 0)
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goto cleanup;
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} else {
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if (unlink(filepath) < 0 && errno != ENOENT) {
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virReportSystemError(errno,
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_("Cannot delete file '%s'"),
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filepath);
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goto cleanup;
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}
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}
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VIR_FREE(filepath);
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errno = 0;
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}
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if (errno) {
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virReportSystemError(errno, _("Cannot read dir '%s'"),
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dir);
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goto cleanup;
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}
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if (rmdir(dir) < 0 && errno != ENOENT) {
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virReportSystemError(errno,
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_("Cannot delete directory '%s'"),
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dir);
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goto cleanup;
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}
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ret = 0;
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cleanup:
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VIR_FREE(filepath);
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closedir(dh);
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return ret;
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}
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@ -108,4 +108,6 @@ int virFileUpdatePerm(const char *path,
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int virFileLoopDeviceAssociate(const char *file,
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char **dev);
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int virFileDeleteTree(const char *dir);
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#endif /* __VIR_FILES_H */
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