mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-24 09:50:04 +00:00
![Geert Uytterhoeven](/assets/img/avatar_default.png)
Extract the glob test code into its own source file, to allow to compile it either to a loadable module, or builtin into the kernel. Link: http://lkml.kernel.org/r/1483470276-10517-2-git-send-email-geert@linux-m68k.org Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
167 lines
4.2 KiB
C
167 lines
4.2 KiB
C
/*
|
|
* 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");
|