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authorLinus Torvalds <torvalds@linux-foundation.org>2014-08-06 21:14:42 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-06 21:14:42 -0700
commit33caee39925b887a99a2400dc5c980097c3573f9 (patch)
tree8e68ad97e1fee88c4a3f31453041f8d139f2027e /lib
parent6456a0438b984186a0c9c8ecc9fe3d97b7ac3613 (diff)
parentf84223087402c45179be5e7060c5736c17a7b271 (diff)
Merge branch 'akpm' (patchbomb from Andrew Morton)
Merge incoming from Andrew Morton: - Various misc things. - arch/sh updates. - Part of ocfs2. Review is slow. - Slab updates. - Most of -mm. - printk updates. - lib/ updates. - checkpatch updates. * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (226 commits) checkpatch: update $declaration_macros, add uninitialized_var checkpatch: warn on missing spaces in broken up quoted checkpatch: fix false positives for --strict "space after cast" test checkpatch: fix false positive MISSING_BREAK warnings with --file checkpatch: add test for native c90 types in unusual order checkpatch: add signed generic types checkpatch: add short int to c variable types checkpatch: add for_each tests to indentation and brace tests checkpatch: fix brace style misuses of else and while checkpatch: add --fix option for a couple OPEN_BRACE misuses checkpatch: use the correct indentation for which() checkpatch: add fix_insert_line and fix_delete_line helpers checkpatch: add ability to insert and delete lines to patch/file checkpatch: add an index variable for fixed lines checkpatch: warn on break after goto or return with same tab indentation checkpatch: emit a warning on file add/move/delete checkpatch: add test for commit id formatting style in commit log checkpatch: emit fewer kmalloc_array/kcalloc conversion warnings checkpatch: improve "no space after cast" test checkpatch: allow multiple const * types ...
Diffstat (limited to 'lib')
-rw-r--r--lib/Kconfig33
-rw-r--r--lib/Kconfig.debug2
-rw-r--r--lib/Makefile2
-rw-r--r--lib/bitmap.c111
-rw-r--r--lib/cmdline.c15
-rw-r--r--lib/glob.c287
-rw-r--r--lib/klist.c6
-rw-r--r--lib/list_sort.c71
-rw-r--r--lib/string_helpers.c15
-rw-r--r--lib/test-kstrtox.c2
-rw-r--r--lib/zlib_deflate/deflate.c143
-rw-r--r--lib/zlib_inflate/inflate.c132
12 files changed, 437 insertions, 382 deletions
diff --git a/lib/Kconfig b/lib/Kconfig
index a8a775730c09..df872659ddd3 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -396,6 +396,39 @@ config CPU_RMAP
config DQL
bool
+config GLOB
+ bool
+# This actually supports modular compilation, but the module overhead
+# is ridiculous for the amount of code involved. Until an out-of-tree
+# driver asks for it, we'll just link it directly it into the kernel
+# when required. Since we're ignoring out-of-tree users, there's also
+# no need bother prompting for a manual decision:
+# prompt "glob_match() function"
+ help
+ This option provides a glob_match function for performing
+ simple text pattern matching. It originated in the ATA code
+ to blacklist particular drive models, but other device drivers
+ may need similar functionality.
+
+ All drivers in the Linux kernel tree that require this function
+ should automatically select this option. Say N unless you
+ are compiling an out-of tree driver which tells you that it
+ depends on this.
+
+config GLOB_SELFTEST
+ bool "glob self-test on init"
+ default n
+ depends on GLOB
+ help
+ This option enables a simple self-test of the glob_match
+ function on startup. It is primarily useful for people
+ working on the code to ensure they haven't introduced any
+ regressions.
+
+ It only adds a little bit of code and slows kernel boot (or
+ module load) by a small amount, so you're welcome to play with
+ it, but you probably don't need it.
+
#
# Netlink attribute parsing support is select'ed if needed
#
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index cfe7df8f62cc..cb45f59685e6 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -15,7 +15,7 @@ config PRINTK_TIME
The behavior is also controlled by the kernel command line
parameter printk.time=1. See Documentation/kernel-parameters.txt
-config DEFAULT_MESSAGE_LOGLEVEL
+config MESSAGE_LOGLEVEL_DEFAULT
int "Default message log level (1-7)"
range 1 7
default "4"
diff --git a/lib/Makefile b/lib/Makefile
index 8427df95dade..d6b4bc496408 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -137,6 +137,8 @@ obj-$(CONFIG_CORDIC) += cordic.o
obj-$(CONFIG_DQL) += dynamic_queue_limits.o
+obj-$(CONFIG_GLOB) += glob.o
+
obj-$(CONFIG_MPILIB) += mpi/
obj-$(CONFIG_SIGNATURE) += digsig.o
diff --git a/lib/bitmap.c b/lib/bitmap.c
index 06f7e4fe8d2d..1e031f2c9aba 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -40,9 +40,9 @@
* for the best explanations of this ordering.
*/
-int __bitmap_empty(const unsigned long *bitmap, int bits)
+int __bitmap_empty(const unsigned long *bitmap, unsigned int bits)
{
- int k, lim = bits/BITS_PER_LONG;
+ unsigned int k, lim = bits/BITS_PER_LONG;
for (k = 0; k < lim; ++k)
if (bitmap[k])
return 0;
@@ -55,9 +55,9 @@ int __bitmap_empty(const unsigned long *bitmap, int bits)
}
EXPORT_SYMBOL(__bitmap_empty);
-int __bitmap_full(const unsigned long *bitmap, int bits)
+int __bitmap_full(const unsigned long *bitmap, unsigned int bits)
{
- int k, lim = bits/BITS_PER_LONG;
+ unsigned int k, lim = bits/BITS_PER_LONG;
for (k = 0; k < lim; ++k)
if (~bitmap[k])
return 0;
@@ -71,9 +71,9 @@ int __bitmap_full(const unsigned long *bitmap, int bits)
EXPORT_SYMBOL(__bitmap_full);
int __bitmap_equal(const unsigned long *bitmap1,
- const unsigned long *bitmap2, int bits)
+ const unsigned long *bitmap2, unsigned int bits)
{
- int k, lim = bits/BITS_PER_LONG;
+ unsigned int k, lim = bits/BITS_PER_LONG;
for (k = 0; k < lim; ++k)
if (bitmap1[k] != bitmap2[k])
return 0;
@@ -86,14 +86,14 @@ int __bitmap_equal(const unsigned long *bitmap1,
}
EXPORT_SYMBOL(__bitmap_equal);
-void __bitmap_complement(unsigned long *dst, const unsigned long *src, int bits)
+void __bitmap_complement(unsigned long *dst, const unsigned long *src, unsigned int bits)
{
- int k, lim = bits/BITS_PER_LONG;
+ unsigned int k, lim = bits/BITS_PER_LONG;
for (k = 0; k < lim; ++k)
dst[k] = ~src[k];
if (bits % BITS_PER_LONG)
- dst[k] = ~src[k] & BITMAP_LAST_WORD_MASK(bits);
+ dst[k] = ~src[k];
}
EXPORT_SYMBOL(__bitmap_complement);
@@ -182,23 +182,26 @@ void __bitmap_shift_left(unsigned long *dst,
EXPORT_SYMBOL(__bitmap_shift_left);
int __bitmap_and(unsigned long *dst, const unsigned long *bitmap1,
- const unsigned long *bitmap2, int bits)
+ const unsigned long *bitmap2, unsigned int bits)
{
- int k;
- int nr = BITS_TO_LONGS(bits);
+ unsigned int k;
+ unsigned int lim = bits/BITS_PER_LONG;
unsigned long result = 0;
- for (k = 0; k < nr; k++)
+ for (k = 0; k < lim; k++)
result |= (dst[k] = bitmap1[k] & bitmap2[k]);
+ if (bits % BITS_PER_LONG)
+ result |= (dst[k] = bitmap1[k] & bitmap2[k] &
+ BITMAP_LAST_WORD_MASK(bits));
return result != 0;
}
EXPORT_SYMBOL(__bitmap_and);
void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1,
- const unsigned long *bitmap2, int bits)
+ const unsigned long *bitmap2, unsigned int bits)
{
- int k;
- int nr = BITS_TO_LONGS(bits);
+ unsigned int k;
+ unsigned int nr = BITS_TO_LONGS(bits);
for (k = 0; k < nr; k++)
dst[k] = bitmap1[k] | bitmap2[k];
@@ -206,10 +209,10 @@ void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1,
EXPORT_SYMBOL(__bitmap_or);
void __bitmap_xor(unsigned long *dst, const unsigned long *bitmap1,
- const unsigned long *bitmap2, int bits)
+ const unsigned long *bitmap2, unsigned int bits)
{
- int k;
- int nr = BITS_TO_LONGS(bits);
+ unsigned int k;
+ unsigned int nr = BITS_TO_LONGS(bits);
for (k = 0; k < nr; k++)
dst[k] = bitmap1[k] ^ bitmap2[k];
@@ -217,22 +220,25 @@ void __bitmap_xor(unsigned long *dst, const unsigned long *bitmap1,
EXPORT_SYMBOL(__bitmap_xor);
int __bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1,
- const unsigned long *bitmap2, int bits)
+ const unsigned long *bitmap2, unsigned int bits)
{
- int k;
- int nr = BITS_TO_LONGS(bits);
+ unsigned int k;
+ unsigned int lim = bits/BITS_PER_LONG;
unsigned long result = 0;
- for (k = 0; k < nr; k++)
+ for (k = 0; k < lim; k++)
result |= (dst[k] = bitmap1[k] & ~bitmap2[k]);
+ if (bits % BITS_PER_LONG)
+ result |= (dst[k] = bitmap1[k] & ~bitmap2[k] &
+ BITMAP_LAST_WORD_MASK(bits));
return result != 0;
}
EXPORT_SYMBOL(__bitmap_andnot);
int __bitmap_intersects(const unsigned long *bitmap1,
- const unsigned long *bitmap2, int bits)
+ const unsigned long *bitmap2, unsigned int bits)
{
- int k, lim = bits/BITS_PER_LONG;
+ unsigned int k, lim = bits/BITS_PER_LONG;
for (k = 0; k < lim; ++k)
if (bitmap1[k] & bitmap2[k])
return 1;
@@ -245,9 +251,9 @@ int __bitmap_intersects(const unsigned long *bitmap1,
EXPORT_SYMBOL(__bitmap_intersects);
int __bitmap_subset(const unsigned long *bitmap1,
- const unsigned long *bitmap2, int bits)
+ const unsigned long *bitmap2, unsigned int bits)
{
- int k, lim = bits/BITS_PER_LONG;
+ unsigned int k, lim = bits/BITS_PER_LONG;
for (k = 0; k < lim; ++k)
if (bitmap1[k] & ~bitmap2[k])
return 0;
@@ -259,9 +265,10 @@ int __bitmap_subset(const unsigned long *bitmap1,
}
EXPORT_SYMBOL(__bitmap_subset);
-int __bitmap_weight(const unsigned long *bitmap, int bits)
+int __bitmap_weight(const unsigned long *bitmap, unsigned int bits)
{
- int k, w = 0, lim = bits/BITS_PER_LONG;
+ unsigned int k, lim = bits/BITS_PER_LONG;
+ int w = 0;
for (k = 0; k < lim; k++)
w += hweight_long(bitmap[k]);
@@ -273,42 +280,42 @@ int __bitmap_weight(const unsigned long *bitmap, int bits)
}
EXPORT_SYMBOL(__bitmap_weight);
-void bitmap_set(unsigned long *map, int start, int nr)
+void bitmap_set(unsigned long *map, unsigned int start, int len)
{
unsigned long *p = map + BIT_WORD(start);
- const int size = start + nr;
+ const unsigned int size = start + len;
int bits_to_set = BITS_PER_LONG - (start % BITS_PER_LONG);
unsigned long mask_to_set = BITMAP_FIRST_WORD_MASK(start);
- while (nr - bits_to_set >= 0) {
+ while (len - bits_to_set >= 0) {
*p |= mask_to_set;
- nr -= bits_to_set;
+ len -= bits_to_set;
bits_to_set = BITS_PER_LONG;
mask_to_set = ~0UL;
p++;
}
- if (nr) {
+ if (len) {
mask_to_set &= BITMAP_LAST_WORD_MASK(size);
*p |= mask_to_set;
}
}
EXPORT_SYMBOL(bitmap_set);
-void bitmap_clear(unsigned long *map, int start, int nr)
+void bitmap_clear(unsigned long *map, unsigned int start, int len)
{
unsigned long *p = map + BIT_WORD(start);
- const int size = start + nr;
+ const unsigned int size = start + len;
int bits_to_clear = BITS_PER_LONG - (start % BITS_PER_LONG);
unsigned long mask_to_clear = BITMAP_FIRST_WORD_MASK(start);
- while (nr - bits_to_clear >= 0) {
+ while (len - bits_to_clear >= 0) {
*p &= ~mask_to_clear;
- nr -= bits_to_clear;
+ len -= bits_to_clear;
bits_to_clear = BITS_PER_LONG;
mask_to_clear = ~0UL;
p++;
}
- if (nr) {
+ if (len) {
mask_to_clear &= BITMAP_LAST_WORD_MASK(size);
*p &= ~mask_to_clear;
}
@@ -664,13 +671,8 @@ static int __bitmap_parselist(const char *buf, unsigned int buflen,
int bitmap_parselist(const char *bp, unsigned long *maskp, int nmaskbits)
{
- char *nl = strchr(bp, '\n');
- int len;
-
- if (nl)
- len = nl - bp;
- else
- len = strlen(bp);
+ char *nl = strchrnul(bp, '\n');
+ int len = nl - bp;
return __bitmap_parselist(bp, len, 0, maskp, nmaskbits);
}
@@ -716,7 +718,7 @@ EXPORT_SYMBOL(bitmap_parselist_user);
*
* If for example, just bits 4 through 7 are set in @buf, then @pos
* values 4 through 7 will get mapped to 0 through 3, respectively,
- * and other @pos values will get mapped to 0. When @pos value 7
+ * and other @pos values will get mapped to -1. When @pos value 7
* gets mapped to (returns) @ord value 3 in this example, that means
* that bit 7 is the 3rd (starting with 0th) set bit in @buf.
*
@@ -1046,7 +1048,7 @@ enum {
REG_OP_RELEASE, /* clear all bits in region */
};
-static int __reg_op(unsigned long *bitmap, int pos, int order, int reg_op)
+static int __reg_op(unsigned long *bitmap, unsigned int pos, int order, int reg_op)
{
int nbits_reg; /* number of bits in region */
int index; /* index first long of region in bitmap */
@@ -1112,11 +1114,11 @@ done:
* Return the bit offset in bitmap of the allocated region,
* or -errno on failure.
*/
-int bitmap_find_free_region(unsigned long *bitmap, int bits, int order)
+int bitmap_find_free_region(unsigned long *bitmap, unsigned int bits, int order)
{
- int pos, end; /* scans bitmap by regions of size order */
+ unsigned int pos, end; /* scans bitmap by regions of size order */
- for (pos = 0 ; (end = pos + (1 << order)) <= bits; pos = end) {
+ for (pos = 0 ; (end = pos + (1U << order)) <= bits; pos = end) {
if (!__reg_op(bitmap, pos, order, REG_OP_ISFREE))
continue;
__reg_op(bitmap, pos, order, REG_OP_ALLOC);
@@ -1137,7 +1139,7 @@ EXPORT_SYMBOL(bitmap_find_free_region);
*
* No return value.
*/
-void bitmap_release_region(unsigned long *bitmap, int pos, int order)
+void bitmap_release_region(unsigned long *bitmap, unsigned int pos, int order)
{
__reg_op(bitmap, pos, order, REG_OP_RELEASE);
}
@@ -1154,12 +1156,11 @@ EXPORT_SYMBOL(bitmap_release_region);
* Return 0 on success, or %-EBUSY if specified region wasn't
* free (not all bits were zero).
*/
-int bitmap_allocate_region(unsigned long *bitmap, int pos, int order)
+int bitmap_allocate_region(unsigned long *bitmap, unsigned int pos, int order)
{
if (!__reg_op(bitmap, pos, order, REG_OP_ISFREE))
return -EBUSY;
- __reg_op(bitmap, pos, order, REG_OP_ALLOC);
- return 0;
+ return __reg_op(bitmap, pos, order, REG_OP_ALLOC);
}
EXPORT_SYMBOL(bitmap_allocate_region);
diff --git a/lib/cmdline.c b/lib/cmdline.c
index d4932f745e92..76a712e6e20e 100644
--- a/lib/cmdline.c
+++ b/lib/cmdline.c
@@ -121,11 +121,7 @@ EXPORT_SYMBOL(get_options);
* @retptr: (output) Optional pointer to next char after parse completes
*
* Parses a string into a number. The number stored at @ptr is
- * potentially suffixed with %K (for kilobytes, or 1024 bytes),
- * %M (for megabytes, or 1048576 bytes), or %G (for gigabytes, or
- * 1073741824). If the number is suffixed with K, M, or G, then
- * the return value is the number multiplied by one kilobyte, one
- * megabyte, or one gigabyte, respectively.
+ * potentially suffixed with K, M, G, T, P, E.
*/
unsigned long long memparse(const char *ptr, char **retptr)
@@ -135,6 +131,15 @@ unsigned long long memparse(const char *ptr, char **retptr)
unsigned long long ret = simple_strtoull(ptr, &endptr, 0);
switch (*endptr) {
+ case 'E':
+ case 'e':
+ ret <<= 10;
+ case 'P':
+ case 'p':
+ ret <<= 10;
+ case 'T':
+ case 't':
+ ret <<= 10;
case 'G':
case 'g':
ret <<= 10;
diff --git a/lib/glob.c b/lib/glob.c
new file mode 100644
index 000000000000..500fc80d23e1
--- /dev/null
+++ b/lib/glob.c
@@ -0,0 +1,287 @@
+#include <linux/module.h>
+#include <linux/glob.h>
+
+/*
+ * The only reason this code can be compiled as a module is because the
+ * ATA code that depends on it can be as well. In practice, they're
+ * both usually compiled in and the module overhead goes away.
+ */
+MODULE_DESCRIPTION("glob(7) matching");
+MODULE_LICENSE("Dual MIT/GPL");
+
+/**
+ * glob_match - Shell-style pattern matching, like !fnmatch(pat, str, 0)
+ * @pat: Shell-style pattern to match, e.g. "*.[ch]".
+ * @str: String to match. The pattern must match the entire string.
+ *
+ * Perform shell-style glob matching, returning true (1) if the match
+ * succeeds, or false (0) if it fails. Equivalent to !fnmatch(@pat, @str, 0).
+ *
+ * Pattern metacharacters are ?, *, [ and \.
+ * (And, inside character classes, !, - and ].)
+ *
+ * This is small and simple implementation intended for device blacklists
+ * where a string is matched against a number of patterns. Thus, it
+ * does not preprocess the patterns. It is non-recursive, and run-time
+ * is at most quadratic: strlen(@str)*strlen(@pat).
+ *
+ * An example of the worst case is glob_match("*aaaaa", "aaaaaaaaaa");
+ * it takes 6 passes over the pattern before matching the string.
+ *
+ * Like !fnmatch(@pat, @str, 0) and unlike the shell, this does NOT
+ * treat / or leading . specially; it isn't actually used for pathnames.
+ *
+ * Note that according to glob(7) (and unlike bash), character classes
+ * are complemented by a leading !; this does not support the regex-style
+ * [^a-z] syntax.
+ *
+ * An opening bracket without a matching close is matched literally.
+ */
+bool __pure glob_match(char const *pat, char const *str)
+{
+ /*
+ * Backtrack to previous * on mismatch and retry starting one
+ * character later in the string. Because * matches all characters
+ * (no exception for /), it can be easily proved that there's
+ * never a need to backtrack multiple levels.
+ */
+ char const *back_pat = NULL, *back_str = back_str;
+
+ /*
+ * Loop over each token (character or class) in pat, matching
+ * it against the remaining unmatched tail of str. Return false
+ * on mismatch, or true after matching the trailing nul bytes.
+ */
+ for (;;) {
+ unsigned char c = *str++;
+ unsigned char d = *pat++;
+
+ switch (d) {
+ case '?': /* Wildcard: anything but nul */
+ if (c == '\0')
+ return false;
+ break;
+ case '*': /* Any-length wildcard */
+ if (*pat == '\0') /* Optimize trailing * case */
+ return true;
+ back_pat = pat;
+ back_str = --str; /* Allow zero-length match */
+ break;
+ case '[': { /* Character class */
+ bool match = false, inverted = (*pat == '!');
+ char const *class = pat + inverted;
+ unsigned char a = *class++;
+
+ /*
+ * Iterate over each span in the character class.
+ * A span is either a single character a, or a
+ * range a-b. The first span may begin with ']'.
+ */
+ do {
+ unsigned char b = a;
+
+ if (a == '\0') /* Malformed */
+ goto literal;
+
+ if (class[0] == '-' && class[1] != ']') {
+ b = class[1];
+
+ if (b == '\0')
+ goto literal;
+
+ class += 2;
+ /* Any special action if a > b? */
+ }
+ match |= (a <= c && c <= b);
+ } while ((a = *class++) != ']');
+
+ if (match == inverted)
+ goto backtrack;
+ pat = class;
+ }
+ break;
+ case '\\':
+ d = *pat++;
+ /*FALLTHROUGH*/
+ default: /* Literal character */
+literal:
+ if (c == d) {
+ if (d == '\0')
+ return true;
+ break;
+ }
+backtrack:
+ if (c == '\0' || !back_pat)
+ return false; /* No point continuing */
+ /* Try again from last *, one character later in str. */
+ pat = back_pat;
+ str = ++back_str;
+ break;
+ }
+ }
+}
+EXPORT_SYMBOL(glob_match);
+
+
+#ifdef CONFIG_GLOB_SELFTEST
+
+#include <linux/printk.h>
+#include <linux/moduleparam.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);
+
+#endif /* CONFIG_GLOB_SELFTEST */
diff --git a/lib/klist.c b/lib/klist.c
index 358a368a2947..89b485a2a58d 100644
--- a/lib/klist.c
+++ b/lib/klist.c
@@ -140,11 +140,11 @@ void klist_add_tail(struct klist_node *n, struct klist *k)
EXPORT_SYMBOL_GPL(klist_add_tail);
/**
- * klist_add_after - Init a klist_node and add it after an existing node
+ * klist_add_behind - Init a klist_node and add it after an existing node
* @n: node we're adding.
* @pos: node to put @n after
*/
-void klist_add_after(struct klist_node *n, struct klist_node *pos)
+void klist_add_behind(struct klist_node *n, struct klist_node *pos)
{
struct klist *k = knode_klist(pos);
@@ -153,7 +153,7 @@ void klist_add_after(struct klist_node *n, struct klist_node *pos)
list_add(&n->n_node, &pos->n_node);
spin_unlock(&k->k_lock);
}
-EXPORT_SYMBOL_GPL(klist_add_after);
+EXPORT_SYMBOL_GPL(klist_add_behind);
/**
* klist_add_before - Init a klist_node and add it before an existing node
diff --git a/lib/list_sort.c b/lib/list_sort.c
index 1183fa70a44d..12bcba1c8612 100644
--- a/lib/list_sort.c
+++ b/lib/list_sort.c
@@ -1,3 +1,6 @@
+
+#define pr_fmt(fmt) "list_sort_test: " fmt
+
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/list_sort.h>
@@ -47,6 +50,7 @@ static void merge_and_restore_back_links(void *priv,
struct list_head *a, struct list_head *b)
{
struct list_head *tail = head;
+ u8 count = 0;
while (a && b) {
/* if equal, take 'a' -- important for sort stability */
@@ -70,7 +74,8 @@ static void merge_and_restore_back_links(void *priv,
* element comparison is needed, so the client's cmp()
* routine can invoke cond_resched() periodically.
*/
- (*cmp)(priv, tail->next, tail->next);
+ if (unlikely(!(++count)))
+ (*cmp)(priv, tail->next, tail->next);
tail->next->prev = tail;
tail = tail->next;
@@ -123,9 +128,7 @@ void list_sort(void *priv, struct list_head *head,
}
if (lev > max_lev) {
if (unlikely(lev >= ARRAY_SIZE(part)-1)) {
- printk_once(KERN_DEBUG "list passed to"
- " list_sort() too long for"
- " efficiency\n");
+ printk_once(KERN_DEBUG "list too long for efficiency\n");
lev--;
}
max_lev = lev;
@@ -168,27 +171,25 @@ static struct debug_el **elts __initdata;
static int __init check(struct debug_el *ela, struct debug_el *elb)
{
if (ela->serial >= TEST_LIST_LEN) {
- printk(KERN_ERR "list_sort_test: error: incorrect serial %d\n",
- ela->serial);
+ pr_err("error: incorrect serial %d\n", ela->serial);
return -EINVAL;
}
if (elb->serial >= TEST_LIST_LEN) {
- printk(KERN_ERR "list_sort_test: error: incorrect serial %d\n",
- elb->serial);
+ pr_err("error: incorrect serial %d\n", elb->serial);
return -EINVAL;
}
if (elts[ela->serial] != ela || elts[elb->serial] != elb) {
- printk(KERN_ERR "list_sort_test: error: phantom element\n");
+ pr_err("error: phantom element\n");
return -EINVAL;
}
if (ela->poison1 != TEST_POISON1 || ela->poison2 != TEST_POISON2) {
- printk(KERN_ERR "list_sort_test: error: bad poison: %#x/%#x\n",
- ela->poison1, ela->poison2);
+ pr_err("error: bad poison: %#x/%#x\n",
+ ela->poison1, ela->poison2);
return -EINVAL;
}
if (elb->poison1 != TEST_POISON1 || elb->poison2 != TEST_POISON2) {
- printk(KERN_ERR "list_sort_test: error: bad poison: %#x/%#x\n",
- elb->poison1, elb->poison2);
+ pr_err("error: bad poison: %#x/%#x\n",
+ elb->poison1, elb->poison2);
return -EINVAL;
}
return 0;
@@ -207,25 +208,23 @@ static int __init cmp(void *priv, struct list_head *a, struct list_head *b)
static int __init list_sort_test(void)
{
- int i, count = 1, err = -EINVAL;
+ int i, count = 1, err = -ENOMEM;
struct debug_el *el;
- struct list_head *cur, *tmp;
+ struct list_head *cur;
LIST_HEAD(head);
- printk(KERN_DEBUG "list_sort_test: start testing list_sort()\n");
+ pr_debug("start testing list_sort()\n");
- elts = kmalloc(sizeof(void *) * TEST_LIST_LEN, GFP_KERNEL);
+ elts = kcalloc(TEST_LIST_LEN, sizeof(*elts), GFP_KERNEL);
if (!elts) {
- printk(KERN_ERR "list_sort_test: error: cannot allocate "
- "memory\n");
- goto exit;
+ pr_err("error: cannot allocate memory\n");
+ return err;
}
for (i = 0; i < TEST_LIST_LEN; i++) {
el = kmalloc(sizeof(*el), GFP_KERNEL);
if (!el) {
- printk(KERN_ERR "list_sort_test: error: cannot "
- "allocate memory\n");
+ pr_err("error: cannot allocate memory\n");
goto exit;
}
/* force some equivalencies */
@@ -239,52 +238,52 @@ static int __init list_sort_test(void)
list_sort(NULL, &head, cmp);
+ err = -EINVAL;
for (cur = head.next; cur->next != &head; cur = cur->next) {
struct debug_el *el1;
int cmp_result;
if (cur->next->prev != cur) {
- printk(KERN_ERR "list_sort_test: error: list is "
- "corrupted\n");
+ pr_err("error: list is corrupted\n");
goto exit;
}
cmp_result = cmp(NULL, cur, cur->next);
if (cmp_result > 0) {
- printk(KERN_ERR "list_sort_test: error: list is not "
- "sorted\n");
+ pr_err("error: list is not sorted\n");
goto exit;
}
el = container_of(cur, struct debug_el, list);
el1 = container_of(cur->next, struct debug_el, list);
if (cmp_result == 0 && el->serial >= el1->serial) {
- printk(KERN_ERR "list_sort_test: error: order of "
- "equivalent elements not preserved\n");
+ pr_err("error: order of equivalent elements not "
+ "preserved\n");
goto exit;
}
if (check(el, el1)) {
- printk(KERN_ERR "list_sort_test: error: element check "
- "failed\n");
+ pr_err("error: element check failed\n");
goto exit;
}
count++;
}
+ if (head.prev != cur) {
+ pr_err("error: list is corrupted\n");
+ goto exit;
+ }
+
if (count != TEST_LIST_LEN) {
- printk(KERN_ERR "list_sort_test: error: bad list length %d",
- count);
+ pr_err("error: bad list length %d", count);
goto exit;
}
err = 0;
exit:
+ for (i = 0; i < TEST_LIST_LEN; i++)
+ kfree(elts[i]);
kfree(elts);
- list_for_each_safe(cur, tmp, &head) {
- list_del(cur);
- kfree(container_of(cur, struct debug_el, list));
- }
return err;
}
module_init(list_sort_test);
diff --git a/lib/string_helpers.c b/lib/string_helpers.c
index ed5c1454dd62..29033f319aea 100644
--- a/lib/string_helpers.c
+++ b/lib/string_helpers.c
@@ -25,12 +25,15 @@
int string_get_size(u64 size, const enum string_size_units units,
char *buf, int len)
{
- static const char *units_10[] = { "B", "kB", "MB", "GB", "TB", "PB",
- "EB", "ZB", "YB", NULL};
- static const char *units_2[] = {"B", "KiB", "MiB", "GiB", "TiB", "PiB",
- "EiB", "ZiB", "YiB", NULL };
- static const char **units_str[] = {
- [STRING_UNITS_10] = units_10,
+ static const char *const units_10[] = {
+ "B", "kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB", NULL
+ };
+ static const char *const units_2[] = {
+ "B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB",
+ NULL
+ };
+ static const char *const *const units_str[] = {
+ [STRING_UNITS_10] = units_10,
[STRING_UNITS_2] = units_2,
};
static const unsigned int divisor[] = {
diff --git a/lib/test-kstrtox.c b/lib/test-kstrtox.c
index bea3f3fa3f02..4137bca5f8e8 100644
--- a/lib/test-kstrtox.c
+++ b/lib/test-kstrtox.c
@@ -3,7 +3,7 @@
#include <linux/module.h>
#define for_each_test(i, test) \
- for (i = 0; i < sizeof(test) / sizeof(test[0]); i++)
+ for (i = 0; i < ARRAY_SIZE(test); i++)
struct test_fail {
const char *str;
diff --git a/lib/zlib_deflate/deflate.c b/lib/zlib_deflate/deflate.c
index d63381e8e333..d20ef458f137 100644
--- a/lib/zlib_deflate/deflate.c
+++ b/lib/zlib_deflate/deflate.c
@@ -250,52 +250,6 @@ int zlib_deflateInit2(
}
/* ========================================================================= */
-#if 0
-int zlib_deflateSetDictionary(
- z_streamp strm,
- const Byte *dictionary,
- uInt dictLength
-)
-{
- deflate_state *s;
- uInt length = dictLength;
- uInt n;
- IPos hash_head = 0;
-
- if (strm == NULL || strm->state == NULL || dictionary == NULL)
- return Z_STREAM_ERROR;
-
- s = (deflate_state *) strm->state;
- if (s->status != INIT_STATE) return Z_STREAM_ERROR;
-
- strm->adler = zlib_adler32(strm->adler, dictionary, dictLength);
-
- if (length < MIN_MATCH) return Z_OK;
- if (length > MAX_DIST(s)) {
- length = MAX_DIST(s);
-#ifndef USE_DICT_HEAD
- dictionary += dictLength - length; /* use the tail of the dictionary */
-#endif
- }
- memcpy((char *)s->window, dictionary, length);
- s->strstart = length;
- s->block_start = (long)length;
-
- /* Insert all strings in the hash table (except for the last two bytes).
- * s->lookahead stays null, so s->ins_h will be recomputed at the next
- * call of fill_window.
- */
- s->ins_h = s->window[0];
- UPDATE_HASH(s, s->ins_h, s->window[1]);
- for (n = 0; n <= length - MIN_MATCH; n++) {
- INSERT_STRING(s, n, hash_head);
- }
- if (hash_head) hash_head = 0; /* to make compiler happy */
- return Z_OK;
-}
-#endif /* 0 */
-
-/* ========================================================================= */
int zlib_deflateReset(
z_streamp strm
)
@@ -326,45 +280,6 @@ int zlib_deflateReset(
return Z_OK;
}
-/* ========================================================================= */
-#if 0
-int zlib_deflateParams(
- z_streamp strm,
- int level,
- int strategy
-)
-{
- deflate_state *s;
- compress_func func;
- int err = Z_OK;
-
- if (strm == NULL || strm->state == NULL) return Z_STREAM_ERROR;
- s = (deflate_state *) strm->state;
-
- if (level == Z_DEFAULT_COMPRESSION) {
- level = 6;
- }
- if (level < 0 || level > 9 || strategy < 0 || strategy > Z_HUFFMAN_ONLY) {
- return Z_STREAM_ERROR;
- }
- func = configuration_table[s->level].func;
-
- if (func != configuration_table[level].func && strm->total_in != 0) {
- /* Flush the last buffer: */
- err = zlib_deflate(strm, Z_PARTIAL_FLUSH);
- }
- if (s->level != level) {
- s->level = level;
- s->max_lazy_match = configuration_table[level].max_lazy;
- s->good_match = configuration_table[level].good_length;
- s->nice_match = configuration_table[level].nice_length;
- s->max_chain_length = configuration_table[level].max_chain;
- }
- s->strategy = strategy;
- return err;
-}
-#endif /* 0 */
-
/* =========================================================================
* Put a short in the pending buffer. The 16-bit value is put in MSB order.
* IN assertion: the stream state is correct and there is enough room in
@@ -568,64 +483,6 @@ int zlib_deflateEnd(
return status == BUSY_STATE ? Z_DATA_ERROR : Z_OK;
}
-/* =========================================================================
- * Copy the source state to the destination state.
- */
-#if 0
-int zlib_deflateCopy (
- z_streamp dest,
- z_streamp source
-)
-{
-#ifdef MAXSEG_64K
- return Z_STREAM_ERROR;
-#else
- deflate_state *ds;
- deflate_state *ss;
- ush *overlay;
- deflate_workspace *mem;
-
-
- if (source == NULL || dest == NULL || source->state == NULL) {
- return Z_STREAM_ERROR;
- }
-
- ss = (deflate_state *) source->state;
-
- *dest = *source;
-
- mem = (deflate_workspace *) dest->workspace;
-
- ds = &(mem->deflate_memory);
-
- dest->state = (struct internal_state *) ds;
- *ds = *ss;
- ds->strm = dest;
-
- ds->window = (Byte *) mem->window_memory;
- ds->prev = (Pos *) mem->prev_memory;
- ds->head = (Pos *) mem->head_memory;
- overlay = (ush *) mem->overlay_memory;
- ds->pending_buf = (uch *) overlay;
-
- memcpy(ds->window, ss->window, ds->w_size * 2 * sizeof(Byte));
- memcpy(ds->prev, ss->prev, ds->w_size * sizeof(Pos));
- memcpy(ds->head, ss->head, ds->hash_size * sizeof(Pos));
- memcpy(ds->pending_buf, ss->pending_buf, (uInt)ds->pending_buf_size);
-
- ds->pending_out = ds->pending_buf + (ss->pending_out - ss->pending_buf);
- ds->d_buf = overlay + ds->lit_bufsize/sizeof(ush);
- ds->l_buf = ds->pending_buf + (1+sizeof(ush))*ds->lit_bufsize;
-
- ds->l_desc.dyn_tree = ds->dyn_ltree;
- ds->d_desc.dyn_tree = ds->dyn_dtree;
- ds->bl_desc.dyn_tree = ds->bl_tree;
-
- return Z_OK;
-#endif
-}
-#endif /* 0 */
-
/* ===========================================================================
* Read a new buffer from the current input stream, update the adler32
* and total number of bytes read. All deflate() input goes through
diff --git a/lib/zlib_inflate/inflate.c b/lib/zlib_inflate/inflate.c
index f5ce87b0800e..58a733b10387 100644
--- a/lib/zlib_inflate/inflate.c
+++ b/lib/zlib_inflate/inflate.c
@@ -45,21 +45,6 @@ int zlib_inflateReset(z_streamp strm)
return Z_OK;
}
-#if 0
-int zlib_inflatePrime(z_streamp strm, int bits, int value)
-{
- struct inflate_state *state;
-
- if (strm == NULL || strm->state == NULL) return Z_STREAM_ERROR;
- state = (struct inflate_state *)strm->state;
- if (bits > 16 || state->bits + bits > 32) return Z_STREAM_ERROR;
- value &= (1L << bits) - 1;
- state->hold += value << state->bits;
- state->bits += bits;
- return Z_OK;
-}
-#endif
-
int zlib_inflateInit2(z_streamp strm, int windowBits)
{
struct inflate_state *state;
@@ -761,123 +746,6 @@ int zlib_inflateEnd(z_streamp strm)
return Z_OK;
}
-#if 0
-int zlib_inflateSetDictionary(z_streamp strm, const Byte *dictionary,
- uInt dictLength)
-{
- struct inflate_state *state;
- unsigned long id;
-
- /* check state */
- if (strm == NULL || strm->state == NULL) return Z_STREAM_ERROR;
- state = (struct inflate_state *)strm->state;
- if (state->wrap != 0 && state->mode != DICT)
- return Z_STREAM_ERROR;
-
- /* check for correct dictionary id */
- if (state->mode == DICT) {
- id = zlib_adler32(0L, NULL, 0);
- id = zlib_adler32(id, dictionary, dictLength);
- if (id != state->check)
- return Z_DATA_ERROR;
- }
-
- /* copy dictionary to window */
- zlib_updatewindow(strm, strm->avail_out);
-
- if (dictLength > state->wsize) {
- memcpy(state->window, dictionary + dictLength - state->wsize,
- state->wsize);
- state->whave = state->wsize;
- }
- else {
- memcpy(state->window + state->wsize - dictLength, dictionary,
- dictLength);
- state->whave = dictLength;
- }
- state->havedict = 1;
- return Z_OK;
-}
-#endif
-
-#if 0
-/*
- Search buf[0..len-1] for the pattern: 0, 0, 0xff, 0xff. Return when found
- or when out of input. When called, *have is the number of pattern bytes
- found in order so far, in 0..3. On return *have is updated to the new
- state. If on return *have equals four, then the pattern was found and the
- return value is how many bytes were read including the last byte of the
- pattern. If *have is less than four, then the pattern has not been found
- yet and the return value is len. In the latter case, zlib_syncsearch() can be
- called again with more data and the *have state. *have is initialized to
- zero for the first call.
- */
-static unsigned zlib_syncsearch(unsigned *have, unsigned char *buf,
- unsigned len)
-{
- unsigned got;
- unsigned next;
-
- got = *have;
- next = 0;
- while (next < len && got < 4) {
- if ((int)(buf[next]) == (got < 2 ? 0 : 0xff))
- got++;
- else if (buf[next])
- got = 0;
- else
- got = 4 - got;
- next++;
- }
- *have = got;
- return next;
-}
-#endif
-
-#if 0
-int zlib_inflateSync(z_streamp strm)
-{
- unsigned len; /* number of bytes to look at or looked at */
- unsigned long in, out; /* temporary to save total_in and total_out */
- unsigned char buf[4]; /* to restore bit buffer to byte string */
- struct inflate_state *state;
-
- /* check parameters */
- if (strm == NULL || strm->state == NULL) return Z_STREAM_ERROR;
- state = (struct inflate_state *)strm->state;
- if (strm->avail_in == 0 && state->bits < 8) return Z_BUF_ERROR;
-
- /* if first time, start search in bit buffer */
- if (state->mode != SYNC) {
- state->mode = SYNC;
- state->hold <<= state->bits & 7;
- state->bits -= state->bits & 7;
- len = 0;
- while (state->bits >= 8) {
- buf[len++] = (unsigned char)(state->hold);
- state->hold >>= 8;
- state->bits -= 8;
- }
- state->have = 0;
- zlib_syncsearch(&(state->have), buf, len);
- }
-
- /* search available input */
- len = zlib_syncsearch(&(state->have), strm->next_in, strm->avail_in);
- strm->avail_in -= len;
- strm->next_in += len;
- strm->total_in += len;
-
- /* return no joy or set up to restart inflate() on a new block */
- if (state->have != 4) return Z_DATA_ERROR;
- in = strm->total_in; out = strm->total_out;
- zlib_inflateReset(strm);
- strm->total_in = in; strm->total_out = out;
- state->mode = TYPE;
- return Z_OK;
-}
-#endif
-
/*
* This subroutine adds the data at next_in/avail_in to the output history
* without performing any output. The output buffer must be "caught up";