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authorLinus Torvalds <torvalds@linux-foundation.org>2013-04-30 17:37:43 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-30 17:37:43 -0700
commit5f56886521d6ddd3648777fae44d82382dd8c87f (patch)
treeaa0db6331cdb01c23f1884439840aadd31bbcca4 /lib/test-string_helpers.c
parentf1e9a236e5ddab6c349611ee86f54291916f226c (diff)
parente2a8b0a779787314eca1061308a8182e6c5bfabd (diff)
downloadlinux-master.tar.gz
Merge branch 'akpm' (incoming from Andrew)HEADmaster
Merge third batch of fixes from Andrew Morton: "Most of the rest. I still have two large patchsets against AIO and IPC, but they're a bit stuck behind other trees and I'm about to vanish for six days. - random fixlets - inotify - more of the MM queue - show_stack() cleanups - DMI update - kthread/workqueue things - compat cleanups - epoll udpates - binfmt updates - nilfs2 - hfs - hfsplus - ptrace - kmod - coredump - kexec - rbtree - pids - pidns - pps - semaphore tweaks - some w1 patches - relay updates - core Kconfig changes - sysrq tweaks" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (109 commits) Documentation/sysrq: fix inconstistent help message of sysrq key ethernet/emac/sysrq: fix inconstistent help message of sysrq key sparc/sysrq: fix inconstistent help message of sysrq key powerpc/xmon/sysrq: fix inconstistent help message of sysrq key ARM/etm/sysrq: fix inconstistent help message of sysrq key power/sysrq: fix inconstistent help message of sysrq key kgdb/sysrq: fix inconstistent help message of sysrq key lib/decompress.c: fix initconst notifier-error-inject: fix module names in Kconfig kernel/sys.c: make prctl(PR_SET_MM) generally available UAPI: remove empty Kbuild files menuconfig: print more info for symbol without prompts init/Kconfig: re-order CONFIG_EXPERT options to fix menuconfig display kconfig menu: move Virtualization drivers near other virtualization options Kconfig: consolidate CONFIG_DEBUG_STRICT_USER_COPY_CHECKS relay: use macro PAGE_ALIGN instead of FIX_SIZE kernel/relay.c: move FIX_SIZE macro into relay.c kernel/relay.c: remove unused function argument actor drivers/w1/slaves/w1_ds2760.c: fix the error handling in w1_ds2760_add_slave() drivers/w1/slaves/w1_ds2781.c: fix the error handling in w1_ds2781_add_slave() ...
Diffstat (limited to 'lib/test-string_helpers.c')
-rw-r--r--lib/test-string_helpers.c103
1 files changed, 103 insertions, 0 deletions
diff --git a/lib/test-string_helpers.c b/lib/test-string_helpers.c
new file mode 100644
index 00000000000..6ac48de04c0
--- /dev/null
+++ b/lib/test-string_helpers.c
@@ -0,0 +1,103 @@
+/*
+ * Test cases for lib/string_helpers.c module.
+ */
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/random.h>
+#include <linux/string.h>
+#include <linux/string_helpers.h>
+
+struct test_string {
+ const char *in;
+ const char *out;
+ unsigned int flags;
+};
+
+static const struct test_string strings[] __initconst = {
+ {
+ .in = "\\f\\ \\n\\r\\t\\v",
+ .out = "\f\\ \n\r\t\v",
+ .flags = UNESCAPE_SPACE,
+ },
+ {
+ .in = "\\40\\1\\387\\0064\\05\\040\\8a\\110\\777",
+ .out = " \001\00387\0064\005 \\8aH?7",
+ .flags = UNESCAPE_OCTAL,
+ },
+ {
+ .in = "\\xv\\xa\\x2c\\xD\\x6f2",
+ .out = "\\xv\n,\ro2",
+ .flags = UNESCAPE_HEX,
+ },
+ {
+ .in = "\\h\\\\\\\"\\a\\e\\",
+ .out = "\\h\\\"\a\e\\",
+ .flags = UNESCAPE_SPECIAL,
+ },
+};
+
+static void __init test_string_unescape(unsigned int flags, bool inplace)
+{
+ char in[256];
+ char out_test[256];
+ char out_real[256];
+ int i, p = 0, q_test = 0, q_real = sizeof(out_real);
+
+ for (i = 0; i < ARRAY_SIZE(strings); i++) {
+ const char *s = strings[i].in;
+ int len = strlen(strings[i].in);
+
+ /* Copy string to in buffer */
+ memcpy(&in[p], s, len);
+ p += len;
+
+ /* Copy expected result for given flags */
+ if (flags & strings[i].flags) {
+ s = strings[i].out;
+ len = strlen(strings[i].out);
+ }
+ memcpy(&out_test[q_test], s, len);
+ q_test += len;
+ }
+ in[p++] = '\0';
+
+ /* Call string_unescape and compare result */
+ if (inplace) {
+ memcpy(out_real, in, p);
+ if (flags == UNESCAPE_ANY)
+ q_real = string_unescape_any_inplace(out_real);
+ else
+ q_real = string_unescape_inplace(out_real, flags);
+ } else if (flags == UNESCAPE_ANY) {
+ q_real = string_unescape_any(in, out_real, q_real);
+ } else {
+ q_real = string_unescape(in, out_real, q_real, flags);
+ }
+
+ if (q_real != q_test || memcmp(out_test, out_real, q_test)) {
+ pr_warn("Test failed: flags = %u\n", flags);
+ print_hex_dump(KERN_WARNING, "Input: ",
+ DUMP_PREFIX_NONE, 16, 1, in, p - 1, true);
+ print_hex_dump(KERN_WARNING, "Expected: ",
+ DUMP_PREFIX_NONE, 16, 1, out_test, q_test, true);
+ print_hex_dump(KERN_WARNING, "Got: ",
+ DUMP_PREFIX_NONE, 16, 1, out_real, q_real, true);
+ }
+}
+
+static int __init test_string_helpers_init(void)
+{
+ unsigned int i;
+
+ pr_info("Running tests...\n");
+ for (i = 0; i < UNESCAPE_ANY + 1; i++)
+ test_string_unescape(i, false);
+ test_string_unescape(get_random_int() % (UNESCAPE_ANY + 1), true);
+
+ return -EINVAL;
+}
+module_init(test_string_helpers_init);
+MODULE_LICENSE("Dual BSD/GPL");