--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2016 RehiveTech. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of RehiveTech nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/queue.h>
+
+#include <rte_debug.h>
+
+#include "resource.h"
+
+struct resource_list resource_list = TAILQ_HEAD_INITIALIZER(resource_list);
+
+size_t resource_size(const struct resource *r)
+{
+ return r->end - r->begin;
+}
+
+const struct resource *resource_find(const char *name)
+{
+ struct resource *r;
+
+ TAILQ_FOREACH(r, &resource_list, next) {
+ RTE_VERIFY(r->name);
+
+ if (!strcmp(r->name, name))
+ return r;
+ }
+
+ return NULL;
+}
+
+int resource_fwrite(const struct resource *r, FILE *f)
+{
+ const size_t goal = resource_size(r);
+ size_t total = 0;
+
+ while (total < goal) {
+ size_t wlen = fwrite(r->begin + total, 1, goal - total, f);
+ if (wlen == 0) {
+ perror(__func__);
+ return -1;
+ }
+
+ total += wlen;
+ }
+
+ return 0;
+}
+
+int resource_fwrite_file(const struct resource *r, const char *fname)
+{
+ FILE *f;
+ int ret;
+
+ f = fopen(fname, "w");
+ if (f == NULL) {
+ perror(__func__);
+ return -1;
+ }
+
+ ret = resource_fwrite(r, f);
+ fclose(f);
+ return ret;
+}
+
+#ifdef RTE_APP_TEST_RESOURCE_TAR
+#include <archive.h>
+#include <archive_entry.h>
+
+static int do_copy(struct archive *r, struct archive *w)
+{
+ const void *buf;
+ size_t len;
+#if ARCHIVE_VERSION_NUMBER >= 3000000
+ int64_t off;
+#else
+ off_t off;
+#endif
+ int ret;
+
+ while (1) {
+ ret = archive_read_data_block(r, &buf, &len, &off);
+ if (ret == ARCHIVE_RETRY)
+ continue;
+
+ if (ret == ARCHIVE_EOF)
+ return 0;
+
+ if (ret != ARCHIVE_OK)
+ return ret;
+
+ do {
+ ret = archive_write_data_block(w, buf, len, off);
+ if (ret != ARCHIVE_OK && ret != ARCHIVE_RETRY)
+ return ret;
+ } while (ret != ARCHIVE_OK);
+ }
+}
+
+int resource_untar(const struct resource *res)
+{
+ struct archive *r;
+ struct archive *w;
+ struct archive_entry *e;
+ void *p;
+ int flags = 0;
+ int ret;
+
+ p = malloc(resource_size(res));
+ if (p == NULL)
+ rte_panic("Failed to malloc %zu B\n", resource_size(res));
+
+ memcpy(p, res->begin, resource_size(res));
+
+ r = archive_read_new();
+ if (r == NULL) {
+ free(p);
+ return -1;
+ }
+
+ archive_read_support_format_all(r);
+ archive_read_support_filter_all(r);
+
+ w = archive_write_disk_new();
+ if (w == NULL) {
+ archive_read_free(r);
+ free(p);
+ return -1;
+ }
+
+ flags |= ARCHIVE_EXTRACT_PERM;
+ flags |= ARCHIVE_EXTRACT_FFLAGS;
+ archive_write_disk_set_options(w, flags);
+ archive_write_disk_set_standard_lookup(w);
+
+ ret = archive_read_open_memory(r, p, resource_size(res));
+ if (ret != ARCHIVE_OK)
+ goto fail;
+
+ while (1) {
+ ret = archive_read_next_header(r, &e);
+ if (ret == ARCHIVE_EOF)
+ break;
+ if (ret != ARCHIVE_OK)
+ goto fail;
+
+ ret = archive_write_header(w, e);
+ if (ret == ARCHIVE_EOF)
+ break;
+ if (ret != ARCHIVE_OK)
+ goto fail;
+
+ if (archive_entry_size(e) == 0)
+ continue;
+
+ ret = do_copy(r, w);
+ if (ret != ARCHIVE_OK)
+ goto fail;
+
+ ret = archive_write_finish_entry(w);
+ if (ret != ARCHIVE_OK)
+ goto fail;
+ }
+
+ archive_write_free(w);
+ archive_read_free(r);
+ free(p);
+ return 0;
+
+fail:
+ archive_write_free(w);
+ archive_read_free(r);
+ free(p);
+ rte_panic("Failed: %s\n", archive_error_string(r));
+ return -1;
+}
+
+int resource_rm_by_tar(const struct resource *res)
+{
+ struct archive *r;
+ struct archive_entry *e;
+ void *p;
+ int try_again = 1;
+ int attempts = 0;
+ int ret;
+
+ p = malloc(resource_size(res));
+ if (p == NULL)
+ rte_panic("Failed to malloc %zu B\n", resource_size(res));
+
+ memcpy(p, res->begin, resource_size(res));
+
+ /*
+ * If somebody creates a file somewhere inside the extracted TAR
+ * hierarchy during a test the resource_rm_by_tar might loop
+ * infinitely. We prevent this by adding the attempts counter there.
+ * In normal case, max N iteration is done where N is the depth of
+ * the file-hierarchy.
+ */
+ while (try_again && attempts < 10000) {
+ r = archive_read_new();
+ if (r == NULL) {
+ free(p);
+ return -1;
+ }
+
+ archive_read_support_format_all(r);
+ archive_read_support_filter_all(r);
+
+ ret = archive_read_open_memory(r, p, resource_size(res));
+ if (ret != ARCHIVE_OK) {
+ fprintf(stderr, "Failed: %s\n",
+ archive_error_string(r));
+ goto fail;
+ }
+
+ try_again = 0;
+
+ while (1) {
+ ret = archive_read_next_header(r, &e);
+ if (ret == ARCHIVE_EOF)
+ break;
+ if (ret != ARCHIVE_OK)
+ goto fail;
+
+ ret = remove(archive_entry_pathname(e));
+ if (ret < 0) {
+ switch (errno) {
+ case ENOTEMPTY:
+ case EEXIST:
+ try_again = 1;
+ break;
+
+ /* should not usually happen: */
+ case ENOENT:
+ case ENOTDIR:
+ case EROFS:
+ attempts += 1;
+ continue;
+ default:
+ perror("Failed to remove file");
+ goto fail;
+ }
+ }
+ }
+
+ archive_read_free(r);
+ attempts += 1;
+ }
+
+ if (attempts >= 10000) {
+ fprintf(stderr, "Failed to remove archive\n");
+ free(p);
+ return -1;
+ }
+
+ free(p);
+ return 0;
+
+fail:
+ archive_read_free(r);
+ free(p);
+
+ rte_panic("Failed: %s\n", archive_error_string(r));
+ return -1;
+}
+
+#endif /* RTE_APP_TEST_RESOURCE_TAR */
+
+void resource_register(struct resource *r)
+{
+ TAILQ_INSERT_TAIL(&resource_list, r, next);
+}
Code Review / deb_dpdk.git / blobdiff