/* * Extracted fronm glob.c */ #include <linux/module.h>#include <linux/moduleparam.h>#include <linux/glob.h>#include <linux/printk.h> /* Boot with "glob.verbose=1" to show successful tests, too */static bool verbose = false;module_param(verbose, bool, 0); struct glob_test {	char const *pat, *str;	bool expected;}; static bool __pure __init test(char const *pat, char const *str, bool expected){	bool match = glob_match(pat, str);	bool success = match == expected; 	/* Can't get string literals into a particular section, so... */	static char const msg_error[] __initconst =		KERN_ERR "glob: \"%s\" vs. \"%s\": %s *** ERROR ***\n";	static char const msg_ok[] __initconst =		KERN_DEBUG "glob: \"%s\" vs. \"%s\": %s OK\n";	static char const mismatch[] __initconst = "mismatch";	char const *message; 	if (!success)		message = msg_error;	else if (verbose)		message = msg_ok;	else		return success; 	printk(message, pat, str, mismatch + 3*match);	return success;} /* * The tests are all jammed together in one array to make it simpler * to place that array in the .init.rodata section.  The obvious * "array of structures containing char *" has no way to force the * pointed-to strings to be in a particular section. * * Anyway, a test consists of: * 1. Expected glob_match result: '1' or '0'. * 2. Pattern to match: null-terminated string * 3. String to match against: null-terminated string * * The list of tests is terminated with a final '\0' instead of * a glob_match result character. */static char const glob_tests[] __initconst =	/* Some basic tests */	"1" "a\0" "a\0"	"0" "a\0" "b\0"	"0" "a\0" "aa\0"	"0" "a\0" "\0"	"1" "\0" "\0"	"0" "\0" "a\0"	/* Simple character class tests */	"1" "[a]\0" "a\0"	"0" "[a]\0" "b\0"	"0" "[!a]\0" "a\0"	"1" "[!a]\0" "b\0"	"1" "[ab]\0" "a\0"	"1" "[ab]\0" "b\0"	"0" "[ab]\0" "c\0"	"1" "[!ab]\0" "c\0"	"1" "[a-c]\0" "b\0"	"0" "[a-c]\0" "d\0"	/* Corner cases in character class parsing */	"1" "[a-c-e-g]\0" "-\0"	"0" "[a-c-e-g]\0" "d\0"	"1" "[a-c-e-g]\0" "f\0"	"1" "[]a-ceg-ik[]\0" "a\0"	"1" "[]a-ceg-ik[]\0" "]\0"	"1" "[]a-ceg-ik[]\0" "[\0"	"1" "[]a-ceg-ik[]\0" "h\0"	"0" "[]a-ceg-ik[]\0" "f\0"	"0" "[!]a-ceg-ik[]\0" "h\0"	"0" "[!]a-ceg-ik[]\0" "]\0"	"1" "[!]a-ceg-ik[]\0" "f\0"	/* Simple wild cards */	"1" "?\0" "a\0"	"0" "?\0" "aa\0"	"0" "??\0" "a\0"	"1" "?x?\0" "axb\0"	"0" "?x?\0" "abx\0"	"0" "?x?\0" "xab\0"	/* Asterisk wild cards (backtracking) */	"0" "*??\0" "a\0"	"1" "*??\0" "ab\0"	"1" "*??\0" "abc\0"	"1" "*??\0" "abcd\0"	"0" "??*\0" "a\0"	"1" "??*\0" "ab\0"	"1" "??*\0" "abc\0"	"1" "??*\0" "abcd\0"	"0" "?*?\0" "a\0"	"1" "?*?\0" "ab\0"	"1" "?*?\0" "abc\0"	"1" "?*?\0" "abcd\0"	"1" "*b\0" "b\0"	"1" "*b\0" "ab\0"	"0" "*b\0" "ba\0"	"1" "*b\0" "bb\0"	"1" "*b\0" "abb\0"	"1" "*b\0" "bab\0"	"1" "*bc\0" "abbc\0"	"1" "*bc\0" "bc\0"	"1" "*bc\0" "bbc\0"	"1" "*bc\0" "bcbc\0"	/* Multiple asterisks (complex backtracking) */	"1" "*ac*\0" "abacadaeafag\0"	"1" "*ac*ae*ag*\0" "abacadaeafag\0"	"1" "*a*b*[bc]*[ef]*g*\0" "abacadaeafag\0"	"0" "*a*b*[ef]*[cd]*g*\0" "abacadaeafag\0"	"1" "*abcd*\0" "abcabcabcabcdefg\0"	"1" "*ab*cd*\0" "abcabcabcabcdefg\0"	"1" "*abcd*abcdef*\0" "abcabcdabcdeabcdefg\0"	"0" "*abcd*\0" "abcabcabcabcefg\0"	"0" "*ab*cd*\0" "abcabcabcabcefg\0"; static int __init glob_init(void){	unsigned successes = 0;	unsigned n = 0;	char const *p = glob_tests;	static char const message[] __initconst =		KERN_INFO "glob: %u self-tests passed, %u failed\n"; 	/*	 * Tests are jammed together in a string.  The first byte is '1'	 * or '0' to indicate the expected outcome, or '\0' to indicate the	 * end of the tests.  Then come two null-terminated strings: the	 * pattern and the string to match it against.	 */	while (*p) {		bool expected = *p++ & 1;		char const *pat = p; 		p += strlen(p) + 1;		successes += test(pat, p, expected);		p += strlen(p) + 1;		n++;	} 	n -= successes;	printk(message, successes, n); 	/* What's the errno for "kernel bug detected"?  Guess... */	return n ? -ECANCELED : 0;} /* We need a dummy exit function to allow unload */static void __exit glob_fini(void) { } module_init(glob_init);module_exit(glob_fini); MODULE_DESCRIPTION("glob(7) matching tests");MODULE_LICENSE("Dual MIT/GPL");