Merge branch 'kernel-doc' from Randy Dunlap
The usual kernel-doc fixups from Randy. Some of them David acked as
merged in his tree, this is the random left-overs.
* kernel-doc:
docbook: fix sched source file names in device-drivers book
docbook: change iomap source filename in deviceiobook
docbook: don't use serial_core.h in device-drivers book
kernel-doc: fix kernel-doc warnings in sched
kernel-doc: fix new warnings in cfg80211.h
kernel-doc: fix new warning in usb.h
kernel-doc: fix new warnings in device.h
kernel-doc: fix new warnings in debugfs
kernel-doc: fix new warning in regulator core
kernel-doc: fix new warnings in pci
kernel-doc: fix new warnings in driver-core
kernel-doc: fix new warnings in auditsc.c
scripts/kernel-doc: fix fatal error caused by cfg80211.h
diff --git a/MAINTAINERS b/MAINTAINERS
index 89b70df..93c68d5 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2246,6 +2246,17 @@
S: Supported
F: fs/dlm/
+DMA BUFFER SHARING FRAMEWORK
+M: Sumit Semwal <sumit.semwal@linaro.org>
+S: Maintained
+L: linux-media@vger.kernel.org
+L: dri-devel@lists.freedesktop.org
+L: linaro-mm-sig@lists.linaro.org
+F: drivers/base/dma-buf*
+F: include/linux/dma-buf*
+F: Documentation/dma-buf-sharing.txt
+T: git git://git.linaro.org/people/sumitsemwal/linux-dma-buf.git
+
DMA GENERIC OFFLOAD ENGINE SUBSYSTEM
M: Vinod Koul <vinod.koul@intel.com>
M: Dan Williams <dan.j.williams@intel.com>
diff --git a/arch/s390/include/asm/kexec.h b/arch/s390/include/asm/kexec.h
index cf4e47b..3f30dac 100644
--- a/arch/s390/include/asm/kexec.h
+++ b/arch/s390/include/asm/kexec.h
@@ -42,6 +42,24 @@
/* The native architecture */
#define KEXEC_ARCH KEXEC_ARCH_S390
+/*
+ * Size for s390x ELF notes per CPU
+ *
+ * Seven notes plus zero note at the end: prstatus, fpregset, timer,
+ * tod_cmp, tod_reg, control regs, and prefix
+ */
+#define KEXEC_NOTE_BYTES \
+ (ALIGN(sizeof(struct elf_note), 4) * 8 + \
+ ALIGN(sizeof("CORE"), 4) * 7 + \
+ ALIGN(sizeof(struct elf_prstatus), 4) + \
+ ALIGN(sizeof(elf_fpregset_t), 4) + \
+ ALIGN(sizeof(u64), 4) + \
+ ALIGN(sizeof(u64), 4) + \
+ ALIGN(sizeof(u32), 4) + \
+ ALIGN(sizeof(u64) * 16, 4) + \
+ ALIGN(sizeof(u32), 4) \
+ )
+
/* Provide a dummy definition to avoid build failures. */
static inline void crash_setup_regs(struct pt_regs *newregs,
struct pt_regs *oldregs) { }
diff --git a/arch/score/kernel/entry.S b/arch/score/kernel/entry.S
index 577abba..83bb960 100644
--- a/arch/score/kernel/entry.S
+++ b/arch/score/kernel/entry.S
@@ -408,7 +408,7 @@
sw r9, [r0, PT_EPC]
cmpi.c r27, __NR_syscalls # check syscall number
- bgtu illegal_syscall
+ bgeu illegal_syscall
slli r8, r27, 2 # get syscall routine
la r11, sys_call_table
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index c957c34..9ca28fc 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -403,6 +403,13 @@
This option enables support for on-chip LED drivers on
MAXIM MAX8997 PMIC.
+config LEDS_OT200
+ tristate "LED support for the Bachmann OT200"
+ depends on LEDS_CLASS && HAS_IOMEM
+ help
+ This option enables support for the LEDs on the Bachmann OT200.
+ Say Y to enable LEDs on the Bachmann OT200.
+
config LEDS_TRIGGERS
bool "LED Trigger support"
depends on LEDS_CLASS
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index b8a9723..1fc6875 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -28,6 +28,7 @@
obj-$(CONFIG_LEDS_TCA6507) += leds-tca6507.o
obj-$(CONFIG_LEDS_CLEVO_MAIL) += leds-clevo-mail.o
obj-$(CONFIG_LEDS_HP6XX) += leds-hp6xx.o
+obj-$(CONFIG_LEDS_OT200) += leds-ot200.o
obj-$(CONFIG_LEDS_FSG) += leds-fsg.o
obj-$(CONFIG_LEDS_PCA955X) += leds-pca955x.o
obj-$(CONFIG_LEDS_DA903X) += leds-da903x.o
diff --git a/drivers/leds/leds-ot200.c b/drivers/leds/leds-ot200.c
new file mode 100644
index 0000000..c464682
--- /dev/null
+++ b/drivers/leds/leds-ot200.c
@@ -0,0 +1,171 @@
+/*
+ * Bachmann ot200 leds driver.
+ *
+ * Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+ * Christian Gmeiner <christian.gmeiner@gmail.com>
+ *
+ * License: GPL as published by the FSF.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/leds.h>
+#include <linux/io.h>
+#include <linux/module.h>
+
+
+struct ot200_led {
+ struct led_classdev cdev;
+ const char *name;
+ unsigned long port;
+ u8 mask;
+};
+
+/*
+ * The device has three leds on the back panel (led_err, led_init and led_run)
+ * and can handle up to seven leds on the front panel.
+ */
+
+static struct ot200_led leds[] = {
+ {
+ .name = "led_run",
+ .port = 0x5a,
+ .mask = BIT(0),
+ },
+ {
+ .name = "led_init",
+ .port = 0x5a,
+ .mask = BIT(1),
+ },
+ {
+ .name = "led_err",
+ .port = 0x5a,
+ .mask = BIT(2),
+ },
+ {
+ .name = "led_1",
+ .port = 0x49,
+ .mask = BIT(7),
+ },
+ {
+ .name = "led_2",
+ .port = 0x49,
+ .mask = BIT(6),
+ },
+ {
+ .name = "led_3",
+ .port = 0x49,
+ .mask = BIT(5),
+ },
+ {
+ .name = "led_4",
+ .port = 0x49,
+ .mask = BIT(4),
+ },
+ {
+ .name = "led_5",
+ .port = 0x49,
+ .mask = BIT(3),
+ },
+ {
+ .name = "led_6",
+ .port = 0x49,
+ .mask = BIT(2),
+ },
+ {
+ .name = "led_7",
+ .port = 0x49,
+ .mask = BIT(1),
+ }
+};
+
+static DEFINE_SPINLOCK(value_lock);
+
+/*
+ * we need to store the current led states, as it is not
+ * possible to read the current led state via inb().
+ */
+static u8 leds_back;
+static u8 leds_front;
+
+static void ot200_led_brightness_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ struct ot200_led *led = container_of(led_cdev, struct ot200_led, cdev);
+ u8 *val;
+ unsigned long flags;
+
+ spin_lock_irqsave(&value_lock, flags);
+
+ if (led->port == 0x49)
+ val = &leds_front;
+ else if (led->port == 0x5a)
+ val = &leds_back;
+ else
+ BUG();
+
+ if (value == LED_OFF)
+ *val &= ~led->mask;
+ else
+ *val |= led->mask;
+
+ outb(*val, led->port);
+ spin_unlock_irqrestore(&value_lock, flags);
+}
+
+static int __devinit ot200_led_probe(struct platform_device *pdev)
+{
+ int i;
+ int ret;
+
+ for (i = 0; i < ARRAY_SIZE(leds); i++) {
+
+ leds[i].cdev.name = leds[i].name;
+ leds[i].cdev.brightness_set = ot200_led_brightness_set;
+
+ ret = led_classdev_register(&pdev->dev, &leds[i].cdev);
+ if (ret < 0)
+ goto err;
+ }
+
+ leds_front = 0; /* turn off all front leds */
+ leds_back = BIT(1); /* turn on init led */
+ outb(leds_front, 0x49);
+ outb(leds_back, 0x5a);
+
+ return 0;
+
+err:
+ for (i = i - 1; i >= 0; i--)
+ led_classdev_unregister(&leds[i].cdev);
+
+ return ret;
+}
+
+static int __devexit ot200_led_remove(struct platform_device *pdev)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(leds); i++)
+ led_classdev_unregister(&leds[i].cdev);
+
+ return 0;
+}
+
+static struct platform_driver ot200_led_driver = {
+ .probe = ot200_led_probe,
+ .remove = __devexit_p(ot200_led_remove),
+ .driver = {
+ .name = "leds-ot200",
+ .owner = THIS_MODULE,
+ },
+};
+
+module_platform_driver(ot200_led_driver);
+
+MODULE_AUTHOR("Sebastian A. Siewior <bigeasy@linutronix.de>");
+MODULE_DESCRIPTION("ot200 LED driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:leds-ot200");
diff --git a/drivers/video/backlight/adp8860_bl.c b/drivers/video/backlight/adp8860_bl.c
index 66bc74d..378276c 100644
--- a/drivers/video/backlight/adp8860_bl.c
+++ b/drivers/video/backlight/adp8860_bl.c
@@ -146,7 +146,7 @@
ret = adp8860_read(client, reg, ®_val);
- if (!ret && ((reg_val & bit_mask) == 0)) {
+ if (!ret && ((reg_val & bit_mask) != bit_mask)) {
reg_val |= bit_mask;
ret = adp8860_write(client, reg, reg_val);
}
diff --git a/drivers/video/backlight/adp8870_bl.c b/drivers/video/backlight/adp8870_bl.c
index 6c68a68..6735059 100644
--- a/drivers/video/backlight/adp8870_bl.c
+++ b/drivers/video/backlight/adp8870_bl.c
@@ -160,7 +160,7 @@
ret = adp8870_read(client, reg, ®_val);
- if (!ret && ((reg_val & bit_mask) == 0)) {
+ if (!ret && ((reg_val & bit_mask) != bit_mask)) {
reg_val |= bit_mask;
ret = adp8870_write(client, reg, reg_val);
}
diff --git a/drivers/video/backlight/l4f00242t03.c b/drivers/video/backlight/l4f00242t03.c
index 4f5d1c4..27d1d7a 100644
--- a/drivers/video/backlight/l4f00242t03.c
+++ b/drivers/video/backlight/l4f00242t03.c
@@ -190,6 +190,7 @@
priv->io_reg = regulator_get(&spi->dev, "vdd");
if (IS_ERR(priv->io_reg)) {
+ ret = PTR_ERR(priv->io_reg);
dev_err(&spi->dev, "%s: Unable to get the IO regulator\n",
__func__);
goto err3;
@@ -197,6 +198,7 @@
priv->core_reg = regulator_get(&spi->dev, "vcore");
if (IS_ERR(priv->core_reg)) {
+ ret = PTR_ERR(priv->core_reg);
dev_err(&spi->dev, "%s: Unable to get the core regulator\n",
__func__);
goto err4;
diff --git a/fs/cifs/Kconfig b/fs/cifs/Kconfig
index f66cc16..0554b00 100644
--- a/fs/cifs/Kconfig
+++ b/fs/cifs/Kconfig
@@ -140,7 +140,6 @@
config CIFS_FSCACHE
bool "Provide CIFS client caching support (EXPERIMENTAL)"
- depends on EXPERIMENTAL
depends on CIFS=m && FSCACHE || CIFS=y && FSCACHE=y
help
Makes CIFS FS-Cache capable. Say Y here if you want your CIFS data
@@ -149,7 +148,7 @@
config CIFS_ACL
bool "Provide CIFS ACL support (EXPERIMENTAL)"
- depends on EXPERIMENTAL && CIFS_XATTR && KEYS
+ depends on CIFS_XATTR && KEYS
help
Allows to fetch CIFS/NTFS ACL from the server. The DACL blob
is handed over to the application/caller.
diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
index 84e8c07..24b3dfc 100644
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -676,14 +676,23 @@
{
char c;
int rc;
+ static bool warned;
rc = get_user(c, buffer);
if (rc)
return rc;
if (c == '0' || c == 'n' || c == 'N')
multiuser_mount = 0;
- else if (c == '1' || c == 'y' || c == 'Y')
+ else if (c == '1' || c == 'y' || c == 'Y') {
multiuser_mount = 1;
+ if (!warned) {
+ warned = true;
+ printk(KERN_WARNING "CIFS VFS: The legacy multiuser "
+ "mount code is scheduled to be deprecated in "
+ "3.5. Please switch to using the multiuser "
+ "mount option.");
+ }
+ }
return count;
}
diff --git a/fs/cifs/cifs_spnego.c b/fs/cifs/cifs_spnego.c
index 2272fd5..e622863 100644
--- a/fs/cifs/cifs_spnego.c
+++ b/fs/cifs/cifs_spnego.c
@@ -113,9 +113,11 @@
MAX_MECH_STR_LEN +
UID_KEY_LEN + (sizeof(uid_t) * 2) +
CREDUID_KEY_LEN + (sizeof(uid_t) * 2) +
- USER_KEY_LEN + strlen(sesInfo->user_name) +
PID_KEY_LEN + (sizeof(pid_t) * 2) + 1;
+ if (sesInfo->user_name)
+ desc_len += USER_KEY_LEN + strlen(sesInfo->user_name);
+
spnego_key = ERR_PTR(-ENOMEM);
description = kzalloc(desc_len, GFP_KERNEL);
if (description == NULL)
@@ -152,8 +154,10 @@
dp = description + strlen(description);
sprintf(dp, ";creduid=0x%x", sesInfo->cred_uid);
- dp = description + strlen(description);
- sprintf(dp, ";user=%s", sesInfo->user_name);
+ if (sesInfo->user_name) {
+ dp = description + strlen(description);
+ sprintf(dp, ";user=%s", sesInfo->user_name);
+ }
dp = description + strlen(description);
sprintf(dp, ";pid=0x%x", current->pid);
diff --git a/fs/cifs/cifs_unicode.c b/fs/cifs/cifs_unicode.c
index 1b2e180..fbb9da9 100644
--- a/fs/cifs/cifs_unicode.c
+++ b/fs/cifs/cifs_unicode.c
@@ -27,17 +27,17 @@
#include "cifs_debug.h"
/*
- * cifs_ucs2_bytes - how long will a string be after conversion?
- * @ucs - pointer to input string
+ * cifs_utf16_bytes - how long will a string be after conversion?
+ * @utf16 - pointer to input string
* @maxbytes - don't go past this many bytes of input string
* @codepage - destination codepage
*
- * Walk a ucs2le string and return the number of bytes that the string will
+ * Walk a utf16le string and return the number of bytes that the string will
* be after being converted to the given charset, not including any null
* termination required. Don't walk past maxbytes in the source buffer.
*/
int
-cifs_ucs2_bytes(const __le16 *from, int maxbytes,
+cifs_utf16_bytes(const __le16 *from, int maxbytes,
const struct nls_table *codepage)
{
int i;
@@ -122,7 +122,7 @@
}
/*
- * cifs_from_ucs2 - convert utf16le string to local charset
+ * cifs_from_utf16 - convert utf16le string to local charset
* @to - destination buffer
* @from - source buffer
* @tolen - destination buffer size (in bytes)
@@ -130,7 +130,7 @@
* @codepage - codepage to which characters should be converted
* @mapchar - should characters be remapped according to the mapchars option?
*
- * Convert a little-endian ucs2le string (as sent by the server) to a string
+ * Convert a little-endian utf16le string (as sent by the server) to a string
* in the provided codepage. The tolen and fromlen parameters are to ensure
* that the code doesn't walk off of the end of the buffer (which is always
* a danger if the alignment of the source buffer is off). The destination
@@ -139,12 +139,12 @@
* null terminator).
*
* Note that some windows versions actually send multiword UTF-16 characters
- * instead of straight UCS-2. The linux nls routines however aren't able to
+ * instead of straight UTF16-2. The linux nls routines however aren't able to
* deal with those characters properly. In the event that we get some of
* those characters, they won't be translated properly.
*/
int
-cifs_from_ucs2(char *to, const __le16 *from, int tolen, int fromlen,
+cifs_from_utf16(char *to, const __le16 *from, int tolen, int fromlen,
const struct nls_table *codepage, bool mapchar)
{
int i, charlen, safelen;
@@ -190,13 +190,13 @@
}
/*
- * NAME: cifs_strtoUCS()
+ * NAME: cifs_strtoUTF16()
*
* FUNCTION: Convert character string to unicode string
*
*/
int
-cifs_strtoUCS(__le16 *to, const char *from, int len,
+cifs_strtoUTF16(__le16 *to, const char *from, int len,
const struct nls_table *codepage)
{
int charlen;
@@ -206,7 +206,7 @@
for (i = 0; len && *from; i++, from += charlen, len -= charlen) {
charlen = codepage->char2uni(from, len, &wchar_to);
if (charlen < 1) {
- cERROR(1, "strtoUCS: char2uni of 0x%x returned %d",
+ cERROR(1, "strtoUTF16: char2uni of 0x%x returned %d",
*from, charlen);
/* A question mark */
wchar_to = 0x003f;
@@ -220,7 +220,8 @@
}
/*
- * cifs_strndup_from_ucs - copy a string from wire format to the local codepage
+ * cifs_strndup_from_utf16 - copy a string from wire format to the local
+ * codepage
* @src - source string
* @maxlen - don't walk past this many bytes in the source string
* @is_unicode - is this a unicode string?
@@ -231,19 +232,19 @@
* error.
*/
char *
-cifs_strndup_from_ucs(const char *src, const int maxlen, const bool is_unicode,
- const struct nls_table *codepage)
+cifs_strndup_from_utf16(const char *src, const int maxlen,
+ const bool is_unicode, const struct nls_table *codepage)
{
int len;
char *dst;
if (is_unicode) {
- len = cifs_ucs2_bytes((__le16 *) src, maxlen, codepage);
+ len = cifs_utf16_bytes((__le16 *) src, maxlen, codepage);
len += nls_nullsize(codepage);
dst = kmalloc(len, GFP_KERNEL);
if (!dst)
return NULL;
- cifs_from_ucs2(dst, (__le16 *) src, len, maxlen, codepage,
+ cifs_from_utf16(dst, (__le16 *) src, len, maxlen, codepage,
false);
} else {
len = strnlen(src, maxlen);
@@ -264,7 +265,7 @@
* names are little endian 16 bit Unicode on the wire
*/
int
-cifsConvertToUCS(__le16 *target, const char *source, int srclen,
+cifsConvertToUTF16(__le16 *target, const char *source, int srclen,
const struct nls_table *cp, int mapChars)
{
int i, j, charlen;
@@ -273,7 +274,7 @@
wchar_t tmp;
if (!mapChars)
- return cifs_strtoUCS(target, source, PATH_MAX, cp);
+ return cifs_strtoUTF16(target, source, PATH_MAX, cp);
for (i = 0, j = 0; i < srclen; j++) {
src_char = source[i];
@@ -281,7 +282,7 @@
switch (src_char) {
case 0:
put_unaligned(0, &target[j]);
- goto ctoUCS_out;
+ goto ctoUTF16_out;
case ':':
dst_char = cpu_to_le16(UNI_COLON);
break;
@@ -326,7 +327,7 @@
put_unaligned(dst_char, &target[j]);
}
-ctoUCS_out:
+ctoUTF16_out:
return i;
}
diff --git a/fs/cifs/cifs_unicode.h b/fs/cifs/cifs_unicode.h
index 6d02fd5..a513a54 100644
--- a/fs/cifs/cifs_unicode.h
+++ b/fs/cifs/cifs_unicode.h
@@ -74,16 +74,16 @@
#endif /* UNIUPR_NOLOWER */
#ifdef __KERNEL__
-int cifs_from_ucs2(char *to, const __le16 *from, int tolen, int fromlen,
- const struct nls_table *codepage, bool mapchar);
-int cifs_ucs2_bytes(const __le16 *from, int maxbytes,
- const struct nls_table *codepage);
-int cifs_strtoUCS(__le16 *, const char *, int, const struct nls_table *);
-char *cifs_strndup_from_ucs(const char *src, const int maxlen,
- const bool is_unicode,
- const struct nls_table *codepage);
-extern int cifsConvertToUCS(__le16 *target, const char *source, int maxlen,
- const struct nls_table *cp, int mapChars);
+int cifs_from_utf16(char *to, const __le16 *from, int tolen, int fromlen,
+ const struct nls_table *codepage, bool mapchar);
+int cifs_utf16_bytes(const __le16 *from, int maxbytes,
+ const struct nls_table *codepage);
+int cifs_strtoUTF16(__le16 *, const char *, int, const struct nls_table *);
+char *cifs_strndup_from_utf16(const char *src, const int maxlen,
+ const bool is_unicode,
+ const struct nls_table *codepage);
+extern int cifsConvertToUTF16(__le16 *target, const char *source, int maxlen,
+ const struct nls_table *cp, int mapChars);
#endif
diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c
index 72ddf23..c1b2544 100644
--- a/fs/cifs/cifsacl.c
+++ b/fs/cifs/cifsacl.c
@@ -909,6 +909,8 @@
umode_t group_mask = S_IRWXG;
umode_t other_mask = S_IRWXU | S_IRWXG | S_IRWXO;
+ if (num_aces > ULONG_MAX / sizeof(struct cifs_ace *))
+ return;
ppace = kmalloc(num_aces * sizeof(struct cifs_ace *),
GFP_KERNEL);
if (!ppace) {
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index 5d9b9ac..63c460e 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -327,7 +327,7 @@
attrptr->type = cpu_to_le16(NTLMSSP_AV_NB_DOMAIN_NAME);
attrptr->length = cpu_to_le16(2 * dlen);
blobptr = (unsigned char *)attrptr + sizeof(struct ntlmssp2_name);
- cifs_strtoUCS((__le16 *)blobptr, ses->domainName, dlen, nls_cp);
+ cifs_strtoUTF16((__le16 *)blobptr, ses->domainName, dlen, nls_cp);
return 0;
}
@@ -376,7 +376,7 @@
kmalloc(attrsize + 1, GFP_KERNEL);
if (!ses->domainName)
return -ENOMEM;
- cifs_from_ucs2(ses->domainName,
+ cifs_from_utf16(ses->domainName,
(__le16 *)blobptr, attrsize, attrsize,
nls_cp, false);
break;
@@ -420,15 +420,20 @@
}
/* convert ses->user_name to unicode and uppercase */
- len = strlen(ses->user_name);
+ len = ses->user_name ? strlen(ses->user_name) : 0;
user = kmalloc(2 + (len * 2), GFP_KERNEL);
if (user == NULL) {
cERROR(1, "calc_ntlmv2_hash: user mem alloc failure\n");
rc = -ENOMEM;
return rc;
}
- len = cifs_strtoUCS((__le16 *)user, ses->user_name, len, nls_cp);
- UniStrupr(user);
+
+ if (len) {
+ len = cifs_strtoUTF16((__le16 *)user, ses->user_name, len, nls_cp);
+ UniStrupr(user);
+ } else {
+ memset(user, '\0', 2);
+ }
rc = crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
(char *)user, 2 * len);
@@ -448,8 +453,8 @@
rc = -ENOMEM;
return rc;
}
- len = cifs_strtoUCS((__le16 *)domain, ses->domainName, len,
- nls_cp);
+ len = cifs_strtoUTF16((__le16 *)domain, ses->domainName, len,
+ nls_cp);
rc =
crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
(char *)domain, 2 * len);
@@ -468,7 +473,7 @@
rc = -ENOMEM;
return rc;
}
- len = cifs_strtoUCS((__le16 *)server, ses->serverName, len,
+ len = cifs_strtoUTF16((__le16 *)server, ses->serverName, len,
nls_cp);
rc =
crypto_shash_update(&ses->server->secmech.sdeschmacmd5->shash,
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index ba53c1c..76e7d8b 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -879,6 +879,8 @@
#define CIFSSEC_MASK 0xB70B7 /* current flags supported if weak */
#endif /* UPCALL */
#else /* do not allow weak pw hash */
+#define CIFSSEC_MUST_LANMAN 0
+#define CIFSSEC_MUST_PLNTXT 0
#ifdef CONFIG_CIFS_UPCALL
#define CIFSSEC_MASK 0x8F08F /* flags supported if no weak allowed */
#else
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 6600aa2..8b7794c 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -821,8 +821,8 @@
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
- PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName,
+ PATH_MAX, nls_codepage, remap);
name_len++; /* trailing null */
name_len *= 2;
} else { /* BB add path length overrun check */
@@ -893,8 +893,8 @@
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- cifsConvertToUCS((__le16 *) pSMB->fileName, fileName,
- PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *) pSMB->fileName, fileName,
+ PATH_MAX, nls_codepage, remap);
name_len++; /* trailing null */
name_len *= 2;
} else { /* BB improve check for buffer overruns BB */
@@ -938,8 +938,8 @@
return rc;
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, dirName,
- PATH_MAX, nls_codepage, remap);
+ name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, dirName,
+ PATH_MAX, nls_codepage, remap);
name_len++; /* trailing null */
name_len *= 2;
} else { /* BB improve check for buffer overruns BB */
@@ -981,8 +981,8 @@
return rc;
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len = cifsConvertToUCS((__le16 *) pSMB->DirName, name,
- PATH_MAX, nls_codepage, remap);
+ name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name,
+ PATH_MAX, nls_codepage, remap);
name_len++; /* trailing null */
name_len *= 2;
} else { /* BB improve check for buffer overruns BB */
@@ -1030,8 +1030,8 @@
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- cifsConvertToUCS((__le16 *) pSMB->FileName, name,
- PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *) pSMB->FileName, name,
+ PATH_MAX, nls_codepage, remap);
name_len++; /* trailing null */
name_len *= 2;
} else { /* BB improve the check for buffer overruns BB */
@@ -1197,8 +1197,8 @@
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
count = 1; /* account for one byte pad to word boundary */
name_len =
- cifsConvertToUCS((__le16 *) (pSMB->fileName + 1),
- fileName, PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1),
+ fileName, PATH_MAX, nls_codepage, remap);
name_len++; /* trailing null */
name_len *= 2;
} else { /* BB improve check for buffer overruns BB */
@@ -1304,8 +1304,8 @@
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
count = 1; /* account for one byte pad to word boundary */
name_len =
- cifsConvertToUCS((__le16 *) (pSMB->fileName + 1),
- fileName, PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1),
+ fileName, PATH_MAX, nls_codepage, remap);
name_len++; /* trailing null */
name_len *= 2;
pSMB->NameLength = cpu_to_le16(name_len);
@@ -2649,16 +2649,16 @@
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName,
- PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *) pSMB->OldFileName, fromName,
+ PATH_MAX, nls_codepage, remap);
name_len++; /* trailing null */
name_len *= 2;
pSMB->OldFileName[name_len] = 0x04; /* pad */
/* protocol requires ASCII signature byte on Unicode string */
pSMB->OldFileName[name_len + 1] = 0x00;
name_len2 =
- cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2],
- toName, PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2],
+ toName, PATH_MAX, nls_codepage, remap);
name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
name_len2 *= 2; /* convert to bytes */
} else { /* BB improve the check for buffer overruns BB */
@@ -2738,10 +2738,12 @@
/* unicode only call */
if (target_name == NULL) {
sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid);
- len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name,
+ len_of_str =
+ cifsConvertToUTF16((__le16 *)rename_info->target_name,
dummy_string, 24, nls_codepage, remap);
} else {
- len_of_str = cifsConvertToUCS((__le16 *)rename_info->target_name,
+ len_of_str =
+ cifsConvertToUTF16((__le16 *)rename_info->target_name,
target_name, PATH_MAX, nls_codepage,
remap);
}
@@ -2795,17 +2797,17 @@
pSMB->Flags = cpu_to_le16(flags & COPY_TREE);
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len = cifsConvertToUCS((__le16 *) pSMB->OldFileName,
- fromName, PATH_MAX, nls_codepage,
- remap);
+ name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName,
+ fromName, PATH_MAX, nls_codepage,
+ remap);
name_len++; /* trailing null */
name_len *= 2;
pSMB->OldFileName[name_len] = 0x04; /* pad */
/* protocol requires ASCII signature byte on Unicode string */
pSMB->OldFileName[name_len + 1] = 0x00;
name_len2 =
- cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2],
- toName, PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2],
+ toName, PATH_MAX, nls_codepage, remap);
name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
name_len2 *= 2; /* convert to bytes */
} else { /* BB improve the check for buffer overruns BB */
@@ -2861,9 +2863,9 @@
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- cifs_strtoUCS((__le16 *) pSMB->FileName, fromName, PATH_MAX
- /* find define for this maxpathcomponent */
- , nls_codepage);
+ cifs_strtoUTF16((__le16 *) pSMB->FileName, fromName,
+ /* find define for this maxpathcomponent */
+ PATH_MAX, nls_codepage);
name_len++; /* trailing null */
name_len *= 2;
@@ -2885,9 +2887,9 @@
data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len_target =
- cifs_strtoUCS((__le16 *) data_offset, toName, PATH_MAX
- /* find define for this maxpathcomponent */
- , nls_codepage);
+ cifs_strtoUTF16((__le16 *) data_offset, toName, PATH_MAX
+ /* find define for this maxpathcomponent */
+ , nls_codepage);
name_len_target++; /* trailing null */
name_len_target *= 2;
} else { /* BB improve the check for buffer overruns BB */
@@ -2949,8 +2951,8 @@
return rc;
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len = cifsConvertToUCS((__le16 *) pSMB->FileName, toName,
- PATH_MAX, nls_codepage, remap);
+ name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName,
+ PATH_MAX, nls_codepage, remap);
name_len++; /* trailing null */
name_len *= 2;
@@ -2972,8 +2974,8 @@
data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len_target =
- cifsConvertToUCS((__le16 *) data_offset, fromName, PATH_MAX,
- nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *) data_offset, fromName,
+ PATH_MAX, nls_codepage, remap);
name_len_target++; /* trailing null */
name_len_target *= 2;
} else { /* BB improve the check for buffer overruns BB */
@@ -3042,8 +3044,8 @@
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- cifsConvertToUCS((__le16 *) pSMB->OldFileName, fromName,
- PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *) pSMB->OldFileName, fromName,
+ PATH_MAX, nls_codepage, remap);
name_len++; /* trailing null */
name_len *= 2;
@@ -3051,8 +3053,8 @@
pSMB->OldFileName[name_len] = 0x04;
pSMB->OldFileName[name_len + 1] = 0x00; /* pad */
name_len2 =
- cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2],
- toName, PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2],
+ toName, PATH_MAX, nls_codepage, remap);
name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
name_len2 *= 2; /* convert to bytes */
} else { /* BB improve the check for buffer overruns BB */
@@ -3108,8 +3110,8 @@
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- cifs_strtoUCS((__le16 *) pSMB->FileName, searchName,
- PATH_MAX, nls_codepage);
+ cifs_strtoUTF16((__le16 *) pSMB->FileName, searchName,
+ PATH_MAX, nls_codepage);
name_len++; /* trailing null */
name_len *= 2;
} else { /* BB improve the check for buffer overruns BB */
@@ -3166,8 +3168,8 @@
is_unicode = false;
/* BB FIXME investigate remapping reserved chars here */
- *symlinkinfo = cifs_strndup_from_ucs(data_start, count,
- is_unicode, nls_codepage);
+ *symlinkinfo = cifs_strndup_from_utf16(data_start,
+ count, is_unicode, nls_codepage);
if (!*symlinkinfo)
rc = -ENOMEM;
}
@@ -3450,8 +3452,9 @@
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
- PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *) pSMB->FileName,
+ searchName, PATH_MAX, nls_codepage,
+ remap);
name_len++; /* trailing null */
name_len *= 2;
pSMB->FileName[name_len] = 0;
@@ -3537,8 +3540,8 @@
return rc;
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
- PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName,
+ PATH_MAX, nls_codepage, remap);
name_len++; /* trailing null */
name_len *= 2;
} else { /* BB improve the check for buffer overruns BB */
@@ -3948,8 +3951,9 @@
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
- PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *) pSMB->FileName,
+ searchName, PATH_MAX, nls_codepage,
+ remap);
name_len++; /* trailing null */
name_len *= 2;
} else {
@@ -4086,8 +4090,8 @@
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
- PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName,
+ PATH_MAX, nls_codepage, remap);
name_len++; /* trailing null */
name_len *= 2;
} else { /* BB improve the check for buffer overruns BB */
@@ -4255,8 +4259,8 @@
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
- PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName,
+ PATH_MAX, nls_codepage, remap);
name_len++; /* trailing null */
name_len *= 2;
} else { /* BB improve the check for buffer overruns BB */
@@ -4344,8 +4348,8 @@
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
- PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName,
+ PATH_MAX, nls_codepage, remap);
/* We can not add the asterik earlier in case
it got remapped to 0xF03A as if it were part of the
directory name instead of a wildcard */
@@ -4656,8 +4660,9 @@
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
- PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *) pSMB->FileName,
+ searchName, PATH_MAX, nls_codepage,
+ remap);
name_len++; /* trailing null */
name_len *= 2;
} else { /* BB improve the check for buffer overruns BB */
@@ -4794,9 +4799,9 @@
rc = -ENOMEM;
goto parse_DFS_referrals_exit;
}
- cifsConvertToUCS((__le16 *) tmp, searchName,
- PATH_MAX, nls_codepage, remap);
- node->path_consumed = cifs_ucs2_bytes(tmp,
+ cifsConvertToUTF16((__le16 *) tmp, searchName,
+ PATH_MAX, nls_codepage, remap);
+ node->path_consumed = cifs_utf16_bytes(tmp,
le16_to_cpu(pSMBr->PathConsumed),
nls_codepage);
kfree(tmp);
@@ -4809,8 +4814,8 @@
/* copy DfsPath */
temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset);
max_len = data_end - temp;
- node->path_name = cifs_strndup_from_ucs(temp, max_len,
- is_unicode, nls_codepage);
+ node->path_name = cifs_strndup_from_utf16(temp, max_len,
+ is_unicode, nls_codepage);
if (!node->path_name) {
rc = -ENOMEM;
goto parse_DFS_referrals_exit;
@@ -4819,8 +4824,8 @@
/* copy link target UNC */
temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset);
max_len = data_end - temp;
- node->node_name = cifs_strndup_from_ucs(temp, max_len,
- is_unicode, nls_codepage);
+ node->node_name = cifs_strndup_from_utf16(temp, max_len,
+ is_unicode, nls_codepage);
if (!node->node_name)
rc = -ENOMEM;
}
@@ -4873,8 +4878,9 @@
if (ses->capabilities & CAP_UNICODE) {
pSMB->hdr.Flags2 |= SMBFLG2_UNICODE;
name_len =
- cifsConvertToUCS((__le16 *) pSMB->RequestFileName,
- searchName, PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *) pSMB->RequestFileName,
+ searchName, PATH_MAX, nls_codepage,
+ remap);
name_len++; /* trailing null */
name_len *= 2;
} else { /* BB improve the check for buffer overruns BB */
@@ -5506,8 +5512,8 @@
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
- PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName,
+ PATH_MAX, nls_codepage, remap);
name_len++; /* trailing null */
name_len *= 2;
} else { /* BB improve the check for buffer overruns BB */
@@ -5796,8 +5802,8 @@
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
- PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName,
+ PATH_MAX, nls_codepage, remap);
name_len++; /* trailing null */
name_len *= 2;
} else { /* BB improve the check for buffer overruns BB */
@@ -5877,8 +5883,8 @@
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- ConvertToUCS((__le16 *) pSMB->fileName, fileName,
- PATH_MAX, nls_codepage);
+ ConvertToUTF16((__le16 *) pSMB->fileName, fileName,
+ PATH_MAX, nls_codepage);
name_len++; /* trailing null */
name_len *= 2;
} else { /* BB improve the check for buffer overruns BB */
@@ -6030,8 +6036,8 @@
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
- PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName,
+ PATH_MAX, nls_codepage, remap);
name_len++; /* trailing null */
name_len *= 2;
} else { /* BB improve the check for buffer overruns BB */
@@ -6123,8 +6129,8 @@
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
list_len =
- cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
- PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName,
+ PATH_MAX, nls_codepage, remap);
list_len++; /* trailing null */
list_len *= 2;
} else { /* BB improve the check for buffer overruns BB */
@@ -6301,8 +6307,8 @@
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
name_len =
- cifsConvertToUCS((__le16 *) pSMB->FileName, fileName,
- PATH_MAX, nls_codepage, remap);
+ cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName,
+ PATH_MAX, nls_codepage, remap);
name_len++; /* trailing null */
name_len *= 2;
} else { /* BB improve the check for buffer overruns BB */
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 4666780..986709a 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -38,6 +38,7 @@
#include <asm/processor.h>
#include <linux/inet.h>
#include <linux/module.h>
+#include <keys/user-type.h>
#include <net/ipv6.h>
#include "cifspdu.h"
#include "cifsglob.h"
@@ -225,74 +226,90 @@
static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB)
{
- struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond;
+ struct smb_t2_rsp *pSMBs = (struct smb_t2_rsp *)psecond;
struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB;
- char *data_area_of_target;
- char *data_area_of_buf2;
+ char *data_area_of_tgt;
+ char *data_area_of_src;
int remaining;
- unsigned int byte_count, total_in_buf;
- __u16 total_data_size, total_in_buf2;
+ unsigned int byte_count, total_in_tgt;
+ __u16 tgt_total_cnt, src_total_cnt, total_in_src;
- total_data_size = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
+ src_total_cnt = get_unaligned_le16(&pSMBs->t2_rsp.TotalDataCount);
+ tgt_total_cnt = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
- if (total_data_size !=
- get_unaligned_le16(&pSMB2->t2_rsp.TotalDataCount))
- cFYI(1, "total data size of primary and secondary t2 differ");
+ if (tgt_total_cnt != src_total_cnt)
+ cFYI(1, "total data count of primary and secondary t2 differ "
+ "source=%hu target=%hu", src_total_cnt, tgt_total_cnt);
- total_in_buf = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
+ total_in_tgt = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
- remaining = total_data_size - total_in_buf;
+ remaining = tgt_total_cnt - total_in_tgt;
- if (remaining < 0)
+ if (remaining < 0) {
+ cFYI(1, "Server sent too much data. tgt_total_cnt=%hu "
+ "total_in_tgt=%hu", tgt_total_cnt, total_in_tgt);
return -EPROTO;
-
- if (remaining == 0) /* nothing to do, ignore */
- return 0;
-
- total_in_buf2 = get_unaligned_le16(&pSMB2->t2_rsp.DataCount);
- if (remaining < total_in_buf2) {
- cFYI(1, "transact2 2nd response contains too much data");
}
+ if (remaining == 0) {
+ /* nothing to do, ignore */
+ cFYI(1, "no more data remains");
+ return 0;
+ }
+
+ total_in_src = get_unaligned_le16(&pSMBs->t2_rsp.DataCount);
+ if (remaining < total_in_src)
+ cFYI(1, "transact2 2nd response contains too much data");
+
/* find end of first SMB data area */
- data_area_of_target = (char *)&pSMBt->hdr.Protocol +
+ data_area_of_tgt = (char *)&pSMBt->hdr.Protocol +
get_unaligned_le16(&pSMBt->t2_rsp.DataOffset);
+
/* validate target area */
+ data_area_of_src = (char *)&pSMBs->hdr.Protocol +
+ get_unaligned_le16(&pSMBs->t2_rsp.DataOffset);
- data_area_of_buf2 = (char *)&pSMB2->hdr.Protocol +
- get_unaligned_le16(&pSMB2->t2_rsp.DataOffset);
+ data_area_of_tgt += total_in_tgt;
- data_area_of_target += total_in_buf;
-
- /* copy second buffer into end of first buffer */
- total_in_buf += total_in_buf2;
+ total_in_tgt += total_in_src;
/* is the result too big for the field? */
- if (total_in_buf > USHRT_MAX)
+ if (total_in_tgt > USHRT_MAX) {
+ cFYI(1, "coalesced DataCount too large (%u)", total_in_tgt);
return -EPROTO;
- put_unaligned_le16(total_in_buf, &pSMBt->t2_rsp.DataCount);
+ }
+ put_unaligned_le16(total_in_tgt, &pSMBt->t2_rsp.DataCount);
/* fix up the BCC */
byte_count = get_bcc(pTargetSMB);
- byte_count += total_in_buf2;
+ byte_count += total_in_src;
/* is the result too big for the field? */
- if (byte_count > USHRT_MAX)
+ if (byte_count > USHRT_MAX) {
+ cFYI(1, "coalesced BCC too large (%u)", byte_count);
return -EPROTO;
+ }
put_bcc(byte_count, pTargetSMB);
byte_count = be32_to_cpu(pTargetSMB->smb_buf_length);
- byte_count += total_in_buf2;
+ byte_count += total_in_src;
/* don't allow buffer to overflow */
- if (byte_count > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4)
+ if (byte_count > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) {
+ cFYI(1, "coalesced BCC exceeds buffer size (%u)", byte_count);
return -ENOBUFS;
+ }
pTargetSMB->smb_buf_length = cpu_to_be32(byte_count);
- memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2);
+ /* copy second buffer into end of first buffer */
+ memcpy(data_area_of_tgt, data_area_of_src, total_in_src);
- if (remaining == total_in_buf2) {
- cFYI(1, "found the last secondary response");
- return 0; /* we are done */
- } else /* more responses to go */
+ if (remaining != total_in_src) {
+ /* more responses to go */
+ cFYI(1, "waiting for more secondary responses");
return 1;
+ }
+
+ /* we are done */
+ cFYI(1, "found the last secondary response");
+ return 0;
}
static void
@@ -1578,11 +1595,14 @@
}
}
- if (vol->multiuser && !(vol->secFlg & CIFSSEC_MAY_KRB5)) {
- cERROR(1, "Multiuser mounts currently require krb5 "
- "authentication!");
+#ifndef CONFIG_KEYS
+ /* Muliuser mounts require CONFIG_KEYS support */
+ if (vol->multiuser) {
+ cERROR(1, "Multiuser mounts require kernels with "
+ "CONFIG_KEYS enabled.");
goto cifs_parse_mount_err;
}
+#endif
if (vol->UNCip == NULL)
vol->UNCip = &vol->UNC[2];
@@ -1981,10 +2001,16 @@
return 0;
break;
default:
+ /* NULL username means anonymous session */
+ if (ses->user_name == NULL) {
+ if (!vol->nullauth)
+ return 0;
+ break;
+ }
+
/* anything else takes username/password */
- if (ses->user_name == NULL)
- return 0;
- if (strncmp(ses->user_name, vol->username,
+ if (strncmp(ses->user_name,
+ vol->username ? vol->username : "",
MAX_USERNAME_SIZE))
return 0;
if (strlen(vol->username) != 0 &&
@@ -2039,6 +2065,132 @@
cifs_put_tcp_session(server);
}
+#ifdef CONFIG_KEYS
+
+/* strlen("cifs:a:") + INET6_ADDRSTRLEN + 1 */
+#define CIFSCREDS_DESC_SIZE (7 + INET6_ADDRSTRLEN + 1)
+
+/* Populate username and pw fields from keyring if possible */
+static int
+cifs_set_cifscreds(struct smb_vol *vol, struct cifs_ses *ses)
+{
+ int rc = 0;
+ char *desc, *delim, *payload;
+ ssize_t len;
+ struct key *key;
+ struct TCP_Server_Info *server = ses->server;
+ struct sockaddr_in *sa;
+ struct sockaddr_in6 *sa6;
+ struct user_key_payload *upayload;
+
+ desc = kmalloc(CIFSCREDS_DESC_SIZE, GFP_KERNEL);
+ if (!desc)
+ return -ENOMEM;
+
+ /* try to find an address key first */
+ switch (server->dstaddr.ss_family) {
+ case AF_INET:
+ sa = (struct sockaddr_in *)&server->dstaddr;
+ sprintf(desc, "cifs:a:%pI4", &sa->sin_addr.s_addr);
+ break;
+ case AF_INET6:
+ sa6 = (struct sockaddr_in6 *)&server->dstaddr;
+ sprintf(desc, "cifs:a:%pI6c", &sa6->sin6_addr.s6_addr);
+ break;
+ default:
+ cFYI(1, "Bad ss_family (%hu)", server->dstaddr.ss_family);
+ rc = -EINVAL;
+ goto out_err;
+ }
+
+ cFYI(1, "%s: desc=%s", __func__, desc);
+ key = request_key(&key_type_logon, desc, "");
+ if (IS_ERR(key)) {
+ if (!ses->domainName) {
+ cFYI(1, "domainName is NULL");
+ rc = PTR_ERR(key);
+ goto out_err;
+ }
+
+ /* didn't work, try to find a domain key */
+ sprintf(desc, "cifs:d:%s", ses->domainName);
+ cFYI(1, "%s: desc=%s", __func__, desc);
+ key = request_key(&key_type_logon, desc, "");
+ if (IS_ERR(key)) {
+ rc = PTR_ERR(key);
+ goto out_err;
+ }
+ }
+
+ down_read(&key->sem);
+ upayload = key->payload.data;
+ if (IS_ERR_OR_NULL(upayload)) {
+ rc = PTR_ERR(key);
+ goto out_key_put;
+ }
+
+ /* find first : in payload */
+ payload = (char *)upayload->data;
+ delim = strnchr(payload, upayload->datalen, ':');
+ cFYI(1, "payload=%s", payload);
+ if (!delim) {
+ cFYI(1, "Unable to find ':' in payload (datalen=%d)",
+ upayload->datalen);
+ rc = -EINVAL;
+ goto out_key_put;
+ }
+
+ len = delim - payload;
+ if (len > MAX_USERNAME_SIZE || len <= 0) {
+ cFYI(1, "Bad value from username search (len=%ld)", len);
+ rc = -EINVAL;
+ goto out_key_put;
+ }
+
+ vol->username = kstrndup(payload, len, GFP_KERNEL);
+ if (!vol->username) {
+ cFYI(1, "Unable to allocate %ld bytes for username", len);
+ rc = -ENOMEM;
+ goto out_key_put;
+ }
+ cFYI(1, "%s: username=%s", __func__, vol->username);
+
+ len = key->datalen - (len + 1);
+ if (len > MAX_PASSWORD_SIZE || len <= 0) {
+ cFYI(1, "Bad len for password search (len=%ld)", len);
+ rc = -EINVAL;
+ kfree(vol->username);
+ vol->username = NULL;
+ goto out_key_put;
+ }
+
+ ++delim;
+ vol->password = kstrndup(delim, len, GFP_KERNEL);
+ if (!vol->password) {
+ cFYI(1, "Unable to allocate %ld bytes for password", len);
+ rc = -ENOMEM;
+ kfree(vol->username);
+ vol->username = NULL;
+ goto out_key_put;
+ }
+
+out_key_put:
+ up_read(&key->sem);
+ key_put(key);
+out_err:
+ kfree(desc);
+ cFYI(1, "%s: returning %d", __func__, rc);
+ return rc;
+}
+#else /* ! CONFIG_KEYS */
+static inline int
+cifs_set_cifscreds(struct smb_vol *vol __attribute__((unused)),
+ struct cifs_ses *ses __attribute__((unused)))
+{
+ return -ENOSYS;
+}
+#endif /* CONFIG_KEYS */
+
static bool warned_on_ntlm; /* globals init to false automatically */
static struct cifs_ses *
@@ -2914,18 +3066,33 @@
#define CIFS_DEFAULT_IOSIZE (1024 * 1024)
/*
- * Windows only supports a max of 60k reads. Default to that when posix
- * extensions aren't in force.
+ * Windows only supports a max of 60kb reads and 65535 byte writes. Default to
+ * those values when posix extensions aren't in force. In actuality here, we
+ * use 65536 to allow for a write that is a multiple of 4k. Most servers seem
+ * to be ok with the extra byte even though Windows doesn't send writes that
+ * are that large.
+ *
+ * Citation:
+ *
+ * http://blogs.msdn.com/b/openspecification/archive/2009/04/10/smb-maximum-transmit-buffer-size-and-performance-tuning.aspx
*/
#define CIFS_DEFAULT_NON_POSIX_RSIZE (60 * 1024)
+#define CIFS_DEFAULT_NON_POSIX_WSIZE (65536)
static unsigned int
cifs_negotiate_wsize(struct cifs_tcon *tcon, struct smb_vol *pvolume_info)
{
__u64 unix_cap = le64_to_cpu(tcon->fsUnixInfo.Capability);
struct TCP_Server_Info *server = tcon->ses->server;
- unsigned int wsize = pvolume_info->wsize ? pvolume_info->wsize :
- CIFS_DEFAULT_IOSIZE;
+ unsigned int wsize;
+
+ /* start with specified wsize, or default */
+ if (pvolume_info->wsize)
+ wsize = pvolume_info->wsize;
+ else if (tcon->unix_ext && (unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
+ wsize = CIFS_DEFAULT_IOSIZE;
+ else
+ wsize = CIFS_DEFAULT_NON_POSIX_WSIZE;
/* can server support 24-bit write sizes? (via UNIX extensions) */
if (!tcon->unix_ext || !(unix_cap & CIFS_UNIX_LARGE_WRITE_CAP))
@@ -3136,10 +3303,9 @@
return -EINVAL;
if (volume_info->nullauth) {
- cFYI(1, "null user");
- volume_info->username = kzalloc(1, GFP_KERNEL);
- if (volume_info->username == NULL)
- return -ENOMEM;
+ cFYI(1, "Anonymous login");
+ kfree(volume_info->username);
+ volume_info->username = NULL;
} else if (volume_info->username) {
/* BB fixme parse for domain name here */
cFYI(1, "Username: %s", volume_info->username);
@@ -3478,7 +3644,7 @@
if (ses->capabilities & CAP_UNICODE) {
smb_buffer->Flags2 |= SMBFLG2_UNICODE;
length =
- cifs_strtoUCS((__le16 *) bcc_ptr, tree,
+ cifs_strtoUTF16((__le16 *) bcc_ptr, tree,
6 /* max utf8 char length in bytes */ *
(/* server len*/ + 256 /* share len */), nls_codepage);
bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */
@@ -3533,7 +3699,7 @@
/* mostly informational -- no need to fail on error here */
kfree(tcon->nativeFileSystem);
- tcon->nativeFileSystem = cifs_strndup_from_ucs(bcc_ptr,
+ tcon->nativeFileSystem = cifs_strndup_from_utf16(bcc_ptr,
bytes_left, is_unicode,
nls_codepage);
@@ -3657,16 +3823,38 @@
return rc;
}
+static int
+cifs_set_vol_auth(struct smb_vol *vol, struct cifs_ses *ses)
+{
+ switch (ses->server->secType) {
+ case Kerberos:
+ vol->secFlg = CIFSSEC_MUST_KRB5;
+ return 0;
+ case NTLMv2:
+ vol->secFlg = CIFSSEC_MUST_NTLMV2;
+ break;
+ case NTLM:
+ vol->secFlg = CIFSSEC_MUST_NTLM;
+ break;
+ case RawNTLMSSP:
+ vol->secFlg = CIFSSEC_MUST_NTLMSSP;
+ break;
+ case LANMAN:
+ vol->secFlg = CIFSSEC_MUST_LANMAN;
+ break;
+ }
+
+ return cifs_set_cifscreds(vol, ses);
+}
+
static struct cifs_tcon *
cifs_construct_tcon(struct cifs_sb_info *cifs_sb, uid_t fsuid)
{
+ int rc;
struct cifs_tcon *master_tcon = cifs_sb_master_tcon(cifs_sb);
struct cifs_ses *ses;
struct cifs_tcon *tcon = NULL;
struct smb_vol *vol_info;
- char username[28]; /* big enough for "krb50x" + hex of ULONG_MAX 6+16 */
- /* We used to have this as MAX_USERNAME which is */
- /* way too big now (256 instead of 32) */
vol_info = kzalloc(sizeof(*vol_info), GFP_KERNEL);
if (vol_info == NULL) {
@@ -3674,8 +3862,6 @@
goto out;
}
- snprintf(username, sizeof(username), "krb50x%x", fsuid);
- vol_info->username = username;
vol_info->local_nls = cifs_sb->local_nls;
vol_info->linux_uid = fsuid;
vol_info->cred_uid = fsuid;
@@ -3685,8 +3871,11 @@
vol_info->local_lease = master_tcon->local_lease;
vol_info->no_linux_ext = !master_tcon->unix_ext;
- /* FIXME: allow for other secFlg settings */
- vol_info->secFlg = CIFSSEC_MUST_KRB5;
+ rc = cifs_set_vol_auth(vol_info, master_tcon->ses);
+ if (rc) {
+ tcon = ERR_PTR(rc);
+ goto out;
+ }
/* get a reference for the same TCP session */
spin_lock(&cifs_tcp_ses_lock);
@@ -3709,6 +3898,8 @@
if (ses->capabilities & CAP_UNIX)
reset_cifs_unix_caps(0, tcon, NULL, vol_info);
out:
+ kfree(vol_info->username);
+ kfree(vol_info->password);
kfree(vol_info);
return tcon;
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index a090bbe..e2bbc68 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -647,10 +647,11 @@
name.name = scratch_buf;
name.len =
- cifs_from_ucs2((char *)name.name, (__le16 *)de.name,
- UNICODE_NAME_MAX,
- min(de.namelen, (size_t)max_len), nlt,
- cifs_sb->mnt_cifs_flags &
+ cifs_from_utf16((char *)name.name, (__le16 *)de.name,
+ UNICODE_NAME_MAX,
+ min_t(size_t, de.namelen,
+ (size_t)max_len), nlt,
+ cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
name.len -= nls_nullsize(nlt);
} else {
diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c
index 4ec3ee9..d85efad 100644
--- a/fs/cifs/sess.c
+++ b/fs/cifs/sess.c
@@ -167,16 +167,16 @@
int bytes_ret = 0;
/* Copy OS version */
- bytes_ret = cifs_strtoUCS((__le16 *)bcc_ptr, "Linux version ", 32,
- nls_cp);
+ bytes_ret = cifs_strtoUTF16((__le16 *)bcc_ptr, "Linux version ", 32,
+ nls_cp);
bcc_ptr += 2 * bytes_ret;
- bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, init_utsname()->release,
- 32, nls_cp);
+ bytes_ret = cifs_strtoUTF16((__le16 *) bcc_ptr, init_utsname()->release,
+ 32, nls_cp);
bcc_ptr += 2 * bytes_ret;
bcc_ptr += 2; /* trailing null */
- bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS,
- 32, nls_cp);
+ bytes_ret = cifs_strtoUTF16((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS,
+ 32, nls_cp);
bcc_ptr += 2 * bytes_ret;
bcc_ptr += 2; /* trailing null */
@@ -197,8 +197,8 @@
*(bcc_ptr+1) = 0;
bytes_ret = 0;
} else
- bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->domainName,
- 256, nls_cp);
+ bytes_ret = cifs_strtoUTF16((__le16 *) bcc_ptr, ses->domainName,
+ 256, nls_cp);
bcc_ptr += 2 * bytes_ret;
bcc_ptr += 2; /* account for null terminator */
@@ -226,8 +226,8 @@
*bcc_ptr = 0;
*(bcc_ptr+1) = 0;
} else {
- bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->user_name,
- MAX_USERNAME_SIZE, nls_cp);
+ bytes_ret = cifs_strtoUTF16((__le16 *) bcc_ptr, ses->user_name,
+ MAX_USERNAME_SIZE, nls_cp);
}
bcc_ptr += 2 * bytes_ret;
bcc_ptr += 2; /* account for null termination */
@@ -287,7 +287,7 @@
cFYI(1, "bleft %d", bleft);
kfree(ses->serverOS);
- ses->serverOS = cifs_strndup_from_ucs(data, bleft, true, nls_cp);
+ ses->serverOS = cifs_strndup_from_utf16(data, bleft, true, nls_cp);
cFYI(1, "serverOS=%s", ses->serverOS);
len = (UniStrnlen((wchar_t *) data, bleft / 2) * 2) + 2;
data += len;
@@ -296,7 +296,7 @@
return;
kfree(ses->serverNOS);
- ses->serverNOS = cifs_strndup_from_ucs(data, bleft, true, nls_cp);
+ ses->serverNOS = cifs_strndup_from_utf16(data, bleft, true, nls_cp);
cFYI(1, "serverNOS=%s", ses->serverNOS);
len = (UniStrnlen((wchar_t *) data, bleft / 2) * 2) + 2;
data += len;
@@ -305,7 +305,7 @@
return;
kfree(ses->serverDomain);
- ses->serverDomain = cifs_strndup_from_ucs(data, bleft, true, nls_cp);
+ ses->serverDomain = cifs_strndup_from_utf16(data, bleft, true, nls_cp);
cFYI(1, "serverDomain=%s", ses->serverDomain);
return;
@@ -502,8 +502,8 @@
tmp += 2;
} else {
int len;
- len = cifs_strtoUCS((__le16 *)tmp, ses->domainName,
- MAX_USERNAME_SIZE, nls_cp);
+ len = cifs_strtoUTF16((__le16 *)tmp, ses->domainName,
+ MAX_USERNAME_SIZE, nls_cp);
len *= 2; /* unicode is 2 bytes each */
sec_blob->DomainName.BufferOffset = cpu_to_le32(tmp - pbuffer);
sec_blob->DomainName.Length = cpu_to_le16(len);
@@ -518,8 +518,8 @@
tmp += 2;
} else {
int len;
- len = cifs_strtoUCS((__le16 *)tmp, ses->user_name,
- MAX_USERNAME_SIZE, nls_cp);
+ len = cifs_strtoUTF16((__le16 *)tmp, ses->user_name,
+ MAX_USERNAME_SIZE, nls_cp);
len *= 2; /* unicode is 2 bytes each */
sec_blob->UserName.BufferOffset = cpu_to_le32(tmp - pbuffer);
sec_blob->UserName.Length = cpu_to_le16(len);
diff --git a/fs/cifs/smbencrypt.c b/fs/cifs/smbencrypt.c
index 80d8508..d5cd9aa 100644
--- a/fs/cifs/smbencrypt.c
+++ b/fs/cifs/smbencrypt.c
@@ -213,7 +213,7 @@
/* Password cannot be longer than 128 characters */
if (passwd) /* Password must be converted to NT unicode */
- len = cifs_strtoUCS(wpwd, passwd, 128, codepage);
+ len = cifs_strtoUTF16(wpwd, passwd, 128, codepage);
else {
len = 0;
*wpwd = 0; /* Ensure string is null terminated */
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index e418c5a..7dcd2a2 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -518,6 +518,9 @@
if (!page)
continue;
+ if (PageReserved(page))
+ continue;
+
/* Clear accessed and referenced bits. */
ptep_test_and_clear_young(vma, addr, pte);
ClearPageReferenced(page);
diff --git a/include/keys/user-type.h b/include/keys/user-type.h
index c37c342..bc9ec1d 100644
--- a/include/keys/user-type.h
+++ b/include/keys/user-type.h
@@ -17,7 +17,7 @@
/*****************************************************************************/
/*
- * the payload for a key of type "user"
+ * the payload for a key of type "user" or "logon"
* - once filled in and attached to a key:
* - the payload struct is invariant may not be changed, only replaced
* - the payload must be read with RCU procedures or with the key semaphore
@@ -33,6 +33,7 @@
};
extern struct key_type key_type_user;
+extern struct key_type key_type_logon;
extern int user_instantiate(struct key *key, const void *data, size_t datalen);
extern int user_update(struct key *key, const void *data, size_t datalen);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 0244082..4b3a41f 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -10,6 +10,7 @@
#include <linux/ioctl.h>
#include <linux/blk_types.h>
#include <linux/types.h>
+#include <linux/migrate_mode.h>
/*
* It's silly to have NR_OPEN bigger than NR_FILE, but you can change
@@ -526,7 +527,6 @@
struct page;
struct address_space;
struct writeback_control;
-enum migrate_mode;
struct iov_iter {
const struct iovec *iov;
diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index 2fa0901..0d7d6a1 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -50,9 +50,11 @@
* note header. For kdump, the code in vmcore.c runs in the context
* of the second kernel to combine them into one note.
*/
+#ifndef KEXEC_NOTE_BYTES
#define KEXEC_NOTE_BYTES ( (KEXEC_NOTE_HEAD_BYTES * 2) + \
KEXEC_CORE_NOTE_NAME_BYTES + \
KEXEC_CORE_NOTE_DESC_BYTES )
+#endif
/*
* This structure is used to hold the arguments that are used when loading
diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index eaf8674..05ed282 100644
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -3,22 +3,10 @@
#include <linux/mm.h>
#include <linux/mempolicy.h>
+#include <linux/migrate_mode.h>
typedef struct page *new_page_t(struct page *, unsigned long private, int **);
-/*
- * MIGRATE_ASYNC means never block
- * MIGRATE_SYNC_LIGHT in the current implementation means to allow blocking
- * on most operations but not ->writepage as the potential stall time
- * is too significant
- * MIGRATE_SYNC will block when migrating pages
- */
-enum migrate_mode {
- MIGRATE_ASYNC,
- MIGRATE_SYNC_LIGHT,
- MIGRATE_SYNC,
-};
-
#ifdef CONFIG_MIGRATION
#define PAGE_MIGRATION 1
diff --git a/include/linux/migrate_mode.h b/include/linux/migrate_mode.h
new file mode 100644
index 0000000..ebf3d89
--- /dev/null
+++ b/include/linux/migrate_mode.h
@@ -0,0 +1,16 @@
+#ifndef MIGRATE_MODE_H_INCLUDED
+#define MIGRATE_MODE_H_INCLUDED
+/*
+ * MIGRATE_ASYNC means never block
+ * MIGRATE_SYNC_LIGHT in the current implementation means to allow blocking
+ * on most operations but not ->writepage as the potential stall time
+ * is too significant
+ * MIGRATE_SYNC will block when migrating pages
+ */
+enum migrate_mode {
+ MIGRATE_ASYNC,
+ MIGRATE_SYNC_LIGHT,
+ MIGRATE_SYNC,
+};
+
+#endif /* MIGRATE_MODE_H_INCLUDED */
diff --git a/include/linux/shmem_fs.h b/include/linux/shmem_fs.h
index e4c711c..79ab255 100644
--- a/include/linux/shmem_fs.h
+++ b/include/linux/shmem_fs.h
@@ -48,6 +48,7 @@
loff_t size, unsigned long flags);
extern int shmem_zero_setup(struct vm_area_struct *);
extern int shmem_lock(struct file *file, int lock, struct user_struct *user);
+extern void shmem_unlock_mapping(struct address_space *mapping);
extern struct page *shmem_read_mapping_page_gfp(struct address_space *mapping,
pgoff_t index, gfp_t gfp_mask);
extern void shmem_truncate_range(struct inode *inode, loff_t start, loff_t end);
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 06061a7..3e60228 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -273,7 +273,7 @@
#endif
extern int page_evictable(struct page *page, struct vm_area_struct *vma);
-extern void scan_mapping_unevictable_pages(struct address_space *);
+extern void check_move_unevictable_pages(struct page **, int nr_pages);
extern unsigned long scan_unevictable_pages;
extern int scan_unevictable_handler(struct ctl_table *, int,
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index 9b7c8ab..86ee272 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -128,7 +128,6 @@
if (S_ISREG(mode)) {
struct mqueue_inode_info *info;
- struct task_struct *p = current;
unsigned long mq_bytes, mq_msg_tblsz;
inode->i_fop = &mqueue_file_operations;
@@ -159,7 +158,7 @@
spin_lock(&mq_lock);
if (u->mq_bytes + mq_bytes < u->mq_bytes ||
- u->mq_bytes + mq_bytes > task_rlimit(p, RLIMIT_MSGQUEUE)) {
+ u->mq_bytes + mq_bytes > rlimit(RLIMIT_MSGQUEUE)) {
spin_unlock(&mq_lock);
/* mqueue_evict_inode() releases info->messages */
ret = -EMFILE;
diff --git a/ipc/shm.c b/ipc/shm.c
index 02ecf2c..b76be5b 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -870,9 +870,7 @@
case SHM_LOCK:
case SHM_UNLOCK:
{
- struct file *uninitialized_var(shm_file);
-
- lru_add_drain_all(); /* drain pagevecs to lru lists */
+ struct file *shm_file;
shp = shm_lock_check(ns, shmid);
if (IS_ERR(shp)) {
@@ -895,22 +893,31 @@
err = security_shm_shmctl(shp, cmd);
if (err)
goto out_unlock;
-
- if(cmd==SHM_LOCK) {
+
+ shm_file = shp->shm_file;
+ if (is_file_hugepages(shm_file))
+ goto out_unlock;
+
+ if (cmd == SHM_LOCK) {
struct user_struct *user = current_user();
- if (!is_file_hugepages(shp->shm_file)) {
- err = shmem_lock(shp->shm_file, 1, user);
- if (!err && !(shp->shm_perm.mode & SHM_LOCKED)){
- shp->shm_perm.mode |= SHM_LOCKED;
- shp->mlock_user = user;
- }
+ err = shmem_lock(shm_file, 1, user);
+ if (!err && !(shp->shm_perm.mode & SHM_LOCKED)) {
+ shp->shm_perm.mode |= SHM_LOCKED;
+ shp->mlock_user = user;
}
- } else if (!is_file_hugepages(shp->shm_file)) {
- shmem_lock(shp->shm_file, 0, shp->mlock_user);
- shp->shm_perm.mode &= ~SHM_LOCKED;
- shp->mlock_user = NULL;
+ goto out_unlock;
}
+
+ /* SHM_UNLOCK */
+ if (!(shp->shm_perm.mode & SHM_LOCKED))
+ goto out_unlock;
+ shmem_lock(shm_file, 0, shp->mlock_user);
+ shp->shm_perm.mode &= ~SHM_LOCKED;
+ shp->mlock_user = NULL;
+ get_file(shm_file);
shm_unlock(shp);
+ shmem_unlock_mapping(shm_file->f_mapping);
+ fput(shm_file);
goto out;
}
case IPC_RMID:
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 95dd721..29f5b65 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -1077,6 +1077,7 @@
/* Early boot. kretprobe_table_locks not yet initialized. */
return;
+ INIT_HLIST_HEAD(&empty_rp);
hash = hash_ptr(tk, KPROBE_HASH_BITS);
head = &kretprobe_inst_table[hash];
kretprobe_table_lock(hash, &flags);
@@ -1085,7 +1086,6 @@
recycle_rp_inst(ri, &empty_rp);
}
kretprobe_table_unlock(hash, &flags);
- INIT_HLIST_HEAD(&empty_rp);
hlist_for_each_entry_safe(ri, node, tmp, &empty_rp, hlist) {
hlist_del(&ri->hlist);
kfree(ri);
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index ea8c3a4..5f34bd8 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2508,6 +2508,7 @@
{
struct hstate *h = hstate_vma(vma);
int ret = VM_FAULT_SIGBUS;
+ int anon_rmap = 0;
pgoff_t idx;
unsigned long size;
struct page *page;
@@ -2562,14 +2563,13 @@
spin_lock(&inode->i_lock);
inode->i_blocks += blocks_per_huge_page(h);
spin_unlock(&inode->i_lock);
- page_dup_rmap(page);
} else {
lock_page(page);
if (unlikely(anon_vma_prepare(vma))) {
ret = VM_FAULT_OOM;
goto backout_unlocked;
}
- hugepage_add_new_anon_rmap(page, vma, address);
+ anon_rmap = 1;
}
} else {
/*
@@ -2582,7 +2582,6 @@
VM_FAULT_SET_HINDEX(h - hstates);
goto backout_unlocked;
}
- page_dup_rmap(page);
}
/*
@@ -2606,6 +2605,10 @@
if (!huge_pte_none(huge_ptep_get(ptep)))
goto backout;
+ if (anon_rmap)
+ hugepage_add_new_anon_rmap(page, vma, address);
+ else
+ page_dup_rmap(page);
new_pte = make_huge_pte(vma, page, ((vma->vm_flags & VM_WRITE)
&& (vma->vm_flags & VM_SHARED)));
set_huge_pte_at(mm, address, ptep, new_pte);
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 3dbff4d..4baddba 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -3247,7 +3247,7 @@
ctype = MEM_CGROUP_CHARGE_TYPE_CACHE;
else
ctype = MEM_CGROUP_CHARGE_TYPE_SHMEM;
- __mem_cgroup_commit_charge(memcg, page, 1, pc, ctype);
+ __mem_cgroup_commit_charge(memcg, newpage, 1, pc, ctype);
return ret;
}
diff --git a/mm/memory.c b/mm/memory.c
index 5e30583..fa2f04e 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -878,15 +878,24 @@
}
if (likely(!non_swap_entry(entry)))
rss[MM_SWAPENTS]++;
- else if (is_write_migration_entry(entry) &&
- is_cow_mapping(vm_flags)) {
- /*
- * COW mappings require pages in both parent
- * and child to be set to read.
- */
- make_migration_entry_read(&entry);
- pte = swp_entry_to_pte(entry);
- set_pte_at(src_mm, addr, src_pte, pte);
+ else if (is_migration_entry(entry)) {
+ page = migration_entry_to_page(entry);
+
+ if (PageAnon(page))
+ rss[MM_ANONPAGES]++;
+ else
+ rss[MM_FILEPAGES]++;
+
+ if (is_write_migration_entry(entry) &&
+ is_cow_mapping(vm_flags)) {
+ /*
+ * COW mappings require pages in both
+ * parent and child to be set to read.
+ */
+ make_migration_entry_read(&entry);
+ pte = swp_entry_to_pte(entry);
+ set_pte_at(src_mm, addr, src_pte, pte);
+ }
}
}
goto out_set_pte;
@@ -1191,6 +1200,16 @@
if (!non_swap_entry(entry))
rss[MM_SWAPENTS]--;
+ else if (is_migration_entry(entry)) {
+ struct page *page;
+
+ page = migration_entry_to_page(entry);
+
+ if (PageAnon(page))
+ rss[MM_ANONPAGES]--;
+ else
+ rss[MM_FILEPAGES]--;
+ }
if (unlikely(!free_swap_and_cache(entry)))
print_bad_pte(vma, addr, ptent, NULL);
}
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 0027d8f..d2186ec 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5413,7 +5413,25 @@
bool is_pageblock_removable_nolock(struct page *page)
{
- struct zone *zone = page_zone(page);
+ struct zone *zone;
+ unsigned long pfn;
+
+ /*
+ * We have to be careful here because we are iterating over memory
+ * sections which are not zone aware so we might end up outside of
+ * the zone but still within the section.
+ * We have to take care about the node as well. If the node is offline
+ * its NODE_DATA will be NULL - see page_zone.
+ */
+ if (!node_online(page_to_nid(page)))
+ return false;
+
+ zone = page_zone(page);
+ pfn = page_to_pfn(page);
+ if (zone->zone_start_pfn > pfn ||
+ zone->zone_start_pfn + zone->spanned_pages <= pfn)
+ return false;
+
return __count_immobile_pages(zone, page, 0);
}
diff --git a/mm/shmem.c b/mm/shmem.c
index feead19..269d049 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -379,7 +379,7 @@
/*
* Pagevec may contain swap entries, so shuffle up pages before releasing.
*/
-static void shmem_pagevec_release(struct pagevec *pvec)
+static void shmem_deswap_pagevec(struct pagevec *pvec)
{
int i, j;
@@ -389,7 +389,36 @@
pvec->pages[j++] = page;
}
pvec->nr = j;
- pagevec_release(pvec);
+}
+
+/*
+ * SysV IPC SHM_UNLOCK restore Unevictable pages to their evictable lists.
+ */
+void shmem_unlock_mapping(struct address_space *mapping)
+{
+ struct pagevec pvec;
+ pgoff_t indices[PAGEVEC_SIZE];
+ pgoff_t index = 0;
+
+ pagevec_init(&pvec, 0);
+ /*
+ * Minor point, but we might as well stop if someone else SHM_LOCKs it.
+ */
+ while (!mapping_unevictable(mapping)) {
+ /*
+ * Avoid pagevec_lookup(): find_get_pages() returns 0 as if it
+ * has finished, if it hits a row of PAGEVEC_SIZE swap entries.
+ */
+ pvec.nr = shmem_find_get_pages_and_swap(mapping, index,
+ PAGEVEC_SIZE, pvec.pages, indices);
+ if (!pvec.nr)
+ break;
+ index = indices[pvec.nr - 1] + 1;
+ shmem_deswap_pagevec(&pvec);
+ check_move_unevictable_pages(pvec.pages, pvec.nr);
+ pagevec_release(&pvec);
+ cond_resched();
+ }
}
/*
@@ -440,7 +469,8 @@
}
unlock_page(page);
}
- shmem_pagevec_release(&pvec);
+ shmem_deswap_pagevec(&pvec);
+ pagevec_release(&pvec);
mem_cgroup_uncharge_end();
cond_resched();
index++;
@@ -470,7 +500,8 @@
continue;
}
if (index == start && indices[0] > end) {
- shmem_pagevec_release(&pvec);
+ shmem_deswap_pagevec(&pvec);
+ pagevec_release(&pvec);
break;
}
mem_cgroup_uncharge_start();
@@ -494,7 +525,8 @@
}
unlock_page(page);
}
- shmem_pagevec_release(&pvec);
+ shmem_deswap_pagevec(&pvec);
+ pagevec_release(&pvec);
mem_cgroup_uncharge_end();
index++;
}
@@ -1068,13 +1100,6 @@
user_shm_unlock(inode->i_size, user);
info->flags &= ~VM_LOCKED;
mapping_clear_unevictable(file->f_mapping);
- /*
- * Ensure that a racing putback_lru_page() can see
- * the pages of this mapping are evictable when we
- * skip them due to !PageLRU during the scan.
- */
- smp_mb__after_clear_bit();
- scan_mapping_unevictable_pages(file->f_mapping);
}
retval = 0;
@@ -2445,6 +2470,10 @@
return 0;
}
+void shmem_unlock_mapping(struct address_space *mapping)
+{
+}
+
void shmem_truncate_range(struct inode *inode, loff_t lstart, loff_t lend)
{
truncate_inode_pages_range(inode->i_mapping, lstart, lend);
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 2880396..c52b235 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -26,7 +26,6 @@
#include <linux/buffer_head.h> /* for try_to_release_page(),
buffer_heads_over_limit */
#include <linux/mm_inline.h>
-#include <linux/pagevec.h>
#include <linux/backing-dev.h>
#include <linux/rmap.h>
#include <linux/topology.h>
@@ -661,7 +660,7 @@
* When racing with an mlock or AS_UNEVICTABLE clearing
* (page is unlocked) make sure that if the other thread
* does not observe our setting of PG_lru and fails
- * isolation/check_move_unevictable_page,
+ * isolation/check_move_unevictable_pages,
* we see PG_mlocked/AS_UNEVICTABLE cleared below and move
* the page back to the evictable list.
*
@@ -3499,100 +3498,61 @@
return 1;
}
+#ifdef CONFIG_SHMEM
/**
- * check_move_unevictable_page - check page for evictability and move to appropriate zone lru list
- * @page: page to check evictability and move to appropriate lru list
- * @zone: zone page is in
+ * check_move_unevictable_pages - check pages for evictability and move to appropriate zone lru list
+ * @pages: array of pages to check
+ * @nr_pages: number of pages to check
*
- * Checks a page for evictability and moves the page to the appropriate
- * zone lru list.
+ * Checks pages for evictability and moves them to the appropriate lru list.
*
- * Restrictions: zone->lru_lock must be held, page must be on LRU and must
- * have PageUnevictable set.
+ * This function is only used for SysV IPC SHM_UNLOCK.
*/
-static void check_move_unevictable_page(struct page *page, struct zone *zone)
+void check_move_unevictable_pages(struct page **pages, int nr_pages)
{
struct lruvec *lruvec;
+ struct zone *zone = NULL;
+ int pgscanned = 0;
+ int pgrescued = 0;
+ int i;
- VM_BUG_ON(PageActive(page));
-retry:
- ClearPageUnevictable(page);
- if (page_evictable(page, NULL)) {
- enum lru_list l = page_lru_base_type(page);
+ for (i = 0; i < nr_pages; i++) {
+ struct page *page = pages[i];
+ struct zone *pagezone;
- __dec_zone_state(zone, NR_UNEVICTABLE);
- lruvec = mem_cgroup_lru_move_lists(zone, page,
- LRU_UNEVICTABLE, l);
- list_move(&page->lru, &lruvec->lists[l]);
- __inc_zone_state(zone, NR_INACTIVE_ANON + l);
- __count_vm_event(UNEVICTABLE_PGRESCUED);
- } else {
- /*
- * rotate unevictable list
- */
- SetPageUnevictable(page);
- lruvec = mem_cgroup_lru_move_lists(zone, page, LRU_UNEVICTABLE,
- LRU_UNEVICTABLE);
- list_move(&page->lru, &lruvec->lists[LRU_UNEVICTABLE]);
- if (page_evictable(page, NULL))
- goto retry;
- }
-}
-
-/**
- * scan_mapping_unevictable_pages - scan an address space for evictable pages
- * @mapping: struct address_space to scan for evictable pages
- *
- * Scan all pages in mapping. Check unevictable pages for
- * evictability and move them to the appropriate zone lru list.
- */
-void scan_mapping_unevictable_pages(struct address_space *mapping)
-{
- pgoff_t next = 0;
- pgoff_t end = (i_size_read(mapping->host) + PAGE_CACHE_SIZE - 1) >>
- PAGE_CACHE_SHIFT;
- struct zone *zone;
- struct pagevec pvec;
-
- if (mapping->nrpages == 0)
- return;
-
- pagevec_init(&pvec, 0);
- while (next < end &&
- pagevec_lookup(&pvec, mapping, next, PAGEVEC_SIZE)) {
- int i;
- int pg_scanned = 0;
-
- zone = NULL;
-
- for (i = 0; i < pagevec_count(&pvec); i++) {
- struct page *page = pvec.pages[i];
- pgoff_t page_index = page->index;
- struct zone *pagezone = page_zone(page);
-
- pg_scanned++;
- if (page_index > next)
- next = page_index;
- next++;
-
- if (pagezone != zone) {
- if (zone)
- spin_unlock_irq(&zone->lru_lock);
- zone = pagezone;
- spin_lock_irq(&zone->lru_lock);
- }
-
- if (PageLRU(page) && PageUnevictable(page))
- check_move_unevictable_page(page, zone);
+ pgscanned++;
+ pagezone = page_zone(page);
+ if (pagezone != zone) {
+ if (zone)
+ spin_unlock_irq(&zone->lru_lock);
+ zone = pagezone;
+ spin_lock_irq(&zone->lru_lock);
}
- if (zone)
- spin_unlock_irq(&zone->lru_lock);
- pagevec_release(&pvec);
- count_vm_events(UNEVICTABLE_PGSCANNED, pg_scanned);
+ if (!PageLRU(page) || !PageUnevictable(page))
+ continue;
+
+ if (page_evictable(page, NULL)) {
+ enum lru_list lru = page_lru_base_type(page);
+
+ VM_BUG_ON(PageActive(page));
+ ClearPageUnevictable(page);
+ __dec_zone_state(zone, NR_UNEVICTABLE);
+ lruvec = mem_cgroup_lru_move_lists(zone, page,
+ LRU_UNEVICTABLE, lru);
+ list_move(&page->lru, &lruvec->lists[lru]);
+ __inc_zone_state(zone, NR_INACTIVE_ANON + lru);
+ pgrescued++;
+ }
}
+ if (zone) {
+ __count_vm_events(UNEVICTABLE_PGRESCUED, pgrescued);
+ __count_vm_events(UNEVICTABLE_PGSCANNED, pgscanned);
+ spin_unlock_irq(&zone->lru_lock);
+ }
}
+#endif /* CONFIG_SHMEM */
static void warn_scan_unevictable_pages(void)
{
diff --git a/security/keys/internal.h b/security/keys/internal.h
index c7a7cae..65647f8 100644
--- a/security/keys/internal.h
+++ b/security/keys/internal.h
@@ -33,6 +33,7 @@
extern struct key_type key_type_dead;
extern struct key_type key_type_user;
+extern struct key_type key_type_logon;
/*****************************************************************************/
/*
diff --git a/security/keys/key.c b/security/keys/key.c
index 4f64c72..7ada801 100644
--- a/security/keys/key.c
+++ b/security/keys/key.c
@@ -999,6 +999,7 @@
list_add_tail(&key_type_keyring.link, &key_types_list);
list_add_tail(&key_type_dead.link, &key_types_list);
list_add_tail(&key_type_user.link, &key_types_list);
+ list_add_tail(&key_type_logon.link, &key_types_list);
/* record the root user tracking */
rb_link_node(&root_key_user.node,
diff --git a/security/keys/user_defined.c b/security/keys/user_defined.c
index 2aee3c5..c7660a2 100644
--- a/security/keys/user_defined.c
+++ b/security/keys/user_defined.c
@@ -18,6 +18,8 @@
#include <asm/uaccess.h>
#include "internal.h"
+static int logon_vet_description(const char *desc);
+
/*
* user defined keys take an arbitrary string as the description and an
* arbitrary blob of data as the payload
@@ -36,6 +38,24 @@
EXPORT_SYMBOL_GPL(key_type_user);
/*
+ * This key type is essentially the same as key_type_user, but it does
+ * not define a .read op. This is suitable for storing username and
+ * password pairs in the keyring that you do not want to be readable
+ * from userspace.
+ */
+struct key_type key_type_logon = {
+ .name = "logon",
+ .instantiate = user_instantiate,
+ .update = user_update,
+ .match = user_match,
+ .revoke = user_revoke,
+ .destroy = user_destroy,
+ .describe = user_describe,
+ .vet_description = logon_vet_description,
+};
+EXPORT_SYMBOL_GPL(key_type_logon);
+
+/*
* instantiate a user defined key
*/
int user_instantiate(struct key *key, const void *data, size_t datalen)
@@ -189,3 +209,20 @@
}
EXPORT_SYMBOL_GPL(user_read);
+
+/* Vet the description for a "logon" key */
+static int logon_vet_description(const char *desc)
+{
+ char *p;
+
+ /* require a "qualified" description string */
+ p = strchr(desc, ':');
+ if (!p)
+ return -EINVAL;
+
+ /* also reject description with ':' as first char */
+ if (p == desc)
+ return -EINVAL;
+
+ return 0;
+}