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rebase and nuke patches

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This commit is contained in:
Kyle McMartin 2011-05-30 07:23:14 -04:00
parent cbc61c988b
commit 123d535ad8
9 changed files with 17 additions and 812 deletions
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53
acpi_reboot.patch
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@ -1,53 +0,0 @@
Improve our reboot handling for compatibility with Windows. Upstream in .38?
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index c495aa8..c770e66 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -34,7 +34,7 @@ EXPORT_SYMBOL(pm_power_off);
static const struct desc_ptr no_idt = {};
static int reboot_mode;
-enum reboot_type reboot_type = BOOT_KBD;
+enum reboot_type reboot_type = BOOT_ACPI;
int reboot_force;
#if defined(CONFIG_X86_32) && defined(CONFIG_SMP)
@@ -538,9 +538,23 @@ void __attribute__((weak)) mach_reboot_fixups(void)
{
}
+/*
+ * Windows does the following on reboot:
+ * 1) If the FADT has the ACPI reboot register flag set, try it
+ * 2) If still alive, write to the keyboard controller
+ * 3) If still alive, write to the ACPI reboot register again
+ * 4) If still alive, write to the keyboard controller again
+ *
+ * If the machine is still alive at this stage, it gives up. We default to
+ * following the same pattern, except that if we're still alive after (4) we'll
+ * try to force a triple fault and then cycle between hitting the keyboard
+ * controller and doing that
+ */
static void native_machine_emergency_restart(void)
{
int i;
+ int attempt = 0;
+ int orig_reboot_type = reboot_type;
if (reboot_emergency)
emergency_vmx_disable_all();
@@ -562,6 +576,13 @@ static void native_machine_emergency_restart(void)
outb(0xfe, 0x64); /* pulse reset low */
udelay(50);
}
+ if (attempt == 0 && orig_reboot_type == BOOT_ACPI) {
+ attempt = 1;
+ reboot_type = BOOT_ACPI;
+ } else {
+ reboot_type = BOOT_TRIPLE;
+ }
+ break;
case BOOT_TRIPLE:
load_idt(&no_idt);

2
add-appleir-usb-driver.patch
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@ -99,9 +99,9 @@ index baa25ad..abc5bd7 100644
--- a/drivers/hid/hid-core.c --- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c
@@ -1244,8 +1244,6 @@ static const struct hid_device_id hid_blacklist[] = { @@ -1244,8 +1244,6 @@ static const struct hid_device_id hid_blacklist[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
{ HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) }, { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) }, { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
{ HID_USB_DEVICE(USB_VENDOR_ID_ACTIONSTAR, USB_DEVICE_ID_ACTIONSTAR_1011) },
- { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ATV_IRCONTROL) }, - { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ATV_IRCONTROL) },
- { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) }, - { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) }, { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },

37
bluetooth-device-ids-for-ath3k-on-pegatron-lucid-tablets.patch
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@ -1,37 +0,0 @@
From: Andy Ross <andy.ross@windriver.com>
Date: Mon, 9 May 2011 23:11:16 +0000 (-0700)
Subject: Bluetooth: Device ids for ath3k on Pegatron Lucid tablets
X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Fpadovan%2Fbluetooth-next-2.6.git;a=commitdiff_plain;h=2a7bccccdb9604a717c2128a931f022267d35629
Bluetooth: Device ids for ath3k on Pegatron Lucid tablets
New ath3k device IDs used on the Pegatron Lucid (ExoPC and WeTab) units.
Signed-off-by: Andy Ross <andy.ross@windriver.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
---
diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c
index 695d441..6bacef3 100644
--- a/drivers/bluetooth/ath3k.c
+++ b/drivers/bluetooth/ath3k.c
@@ -62,6 +62,7 @@ static struct usb_device_id ath3k_table[] = {
/* Atheros AR3011 with sflash firmware*/
{ USB_DEVICE(0x0CF3, 0x3002) },
+ { USB_DEVICE(0x13d3, 0x3304) },
/* Atheros AR9285 Malbec with sflash firmware */
{ USB_DEVICE(0x03F0, 0x311D) },
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 762a510..c2de895 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -104,6 +104,7 @@ static struct usb_device_id blacklist_table[] = {
/* Atheros 3011 with sflash firmware */
{ USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
+ { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
/* Atheros AR9285 Malbec with sflash firmware */
{ USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },

23
drm-intel-make-lvds-work.patch
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@ -1,23 +1,18 @@
drivers/gpu/drm/i915/intel_display.c | 2 --
1 files changed, 0 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 990f065..171a797 100644
--- a/drivers/gpu/drm/i915/intel_display.c --- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4568,7 +4568,6 @@ void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder, @@ -5821,7 +5821,6 @@ void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder,
struct drm_connector *connector, int dpms_mode) struct intel_load_detect_pipe *old)
{ {
struct drm_encoder *encoder = &intel_encoder->base; struct drm_encoder *encoder = &intel_encoder->base;
- struct drm_device *dev = encoder->dev; - struct drm_device *dev = encoder->dev;
struct drm_crtc *crtc = encoder->crtc; struct drm_crtc *crtc = encoder->crtc;
struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
@@ -4578,7 +4577,6 @@ void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder, @@ -5832,7 +5831,6 @@ void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder,
connector->encoder = NULL;
intel_encoder->load_detect_temp = false;
crtc->enabled = drm_helper_crtc_in_use(crtc);
- drm_helper_disable_unused_functions(dev);
}
/* Switch crtc and encoder back off if necessary */ if (old->load_detect_temp) {
connector->encoder = NULL;
- drm_helper_disable_unused_functions(dev);
if (old->release_fb)
old->release_fb->funcs->destroy(old->release_fb);

80
hid-multitouch-add-support-for-elo-touchsystems.patch
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@ -1,80 +0,0 @@
From: Benjamin Tissoires <benjamin.tissoires@enac.fr>
Date: Thu, 19 May 2011 09:37:29 +0000 (+0200)
Subject: HID: hid-multitouch: add support for Elo TouchSystems 2515 IntelliTouch Plus
X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Fjikos%2Fhid.git;a=commitdiff_plain;h=c04abeeff9d76a703cac1e6d312853b0fc8136f5
HID: hid-multitouch: add support for Elo TouchSystems 2515 IntelliTouch Plus
This patch adds support for Elo TouchSystems 2515 IntelliTouch Plus
that can be found in Lenovo A700 all-in-one.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@enac.fr>
Tested-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
--- linux-2.6.39.x86_64/drivers/hid/Kconfig 2011-05-19 00:06:34.000000000 -0400
+++ linux-2.6.39.x86_64/drivers/hid/Kconfig 2011-05-24 10:17:13.007752208 -0400
@@ -321,6 +321,7 @@
Say Y here if you have one of the following devices:
- Cypress TrueTouch panels
+ - Elo TouchSystems IntelliTouch Plus panels
- Hanvon dual touch panels
- IrTouch Infrared USB panels
- Pixcir dual touch panels
--- linux-2.6.39.x86_64/drivers/hid/hid-core.c 2011-05-24 10:14:17.000000000 -0400
+++ linux-2.6.39.x86_64/drivers/hid/hid-core.c 2011-05-24 10:17:47.418905357 -0400
@@ -1367,6 +1367,7 @@
{ HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH3) },
{ HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
+ { HID_USB_DEVICE(USB_VENDOR_ID_ELO, USB_DEVICE_ID_ELO_TS2515) },
{ HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
{ HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
{ HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
--- linux-2.6.39.x86_64/drivers/hid/hid-ids.h 2011-05-24 10:14:17.000000000 -0400
+++ linux-2.6.39.x86_64/drivers/hid/hid-ids.h 2011-05-24 10:19:25.946345418 -0400
@@ -223,6 +223,7 @@
#define USB_VENDOR_ID_DREAM_CHEEKY 0x1d34
#define USB_VENDOR_ID_ELO 0x04E7
+#define USB_DEVICE_ID_ELO_TS2515 0x0022
#define USB_DEVICE_ID_ELO_TS2700 0x0020
#define USB_VENDOR_ID_EMS 0x2006
--- linux-2.6.39.x86_64/drivers/hid/hid-multitouch.c 2011-05-19 00:06:34.000000000 -0400
+++ linux-2.6.39.x86_64/drivers/hid/hid-multitouch.c 2011-05-24 10:22:32.505183658 -0400
@@ -78,6 +78,7 @@
#define MT_CLS_DUAL_INRANGE_CONTACTNUMBER 3
#define MT_CLS_CYPRESS 4
#define MT_CLS_EGALAX 5
+#define MT_CLS_DUAL_NSMU_CONTACTID 6
/*
* these device-dependent functions determine what slot corresponds
@@ -136,6 +137,13 @@
.sn_move = 4096,
.sn_pressure = 32,
},
+
+ { .name = MT_CLS_DUAL_NSMU_CONTACTID,
+ .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP |
+ MT_QUIRK_SLOT_IS_CONTACTID,
+ .maxcontacts = 2
+ },
+
{ }
};
@@ -493,6 +501,11 @@
HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS,
USB_DEVICE_ID_CYPRESS_TRUETOUCH) },
+ /* Elo TouchSystems IntelliTouch Plus panel */
+ { .driver_data = MT_CLS_DUAL_NSMU_CONTACTID,
+ HID_USB_DEVICE(USB_VENDOR_ID_ELO,
+ USB_DEVICE_ID_ELO_TS2515) },
+
/* GeneralTouch panel */
{ .driver_data = MT_CLS_DUAL_INRANGE_CONTACTNUMBER,
HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH,

18
kernel.spec
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@ -623,8 +623,6 @@ Patch150: linux-2.6.29-sparc-IOC_TYPECHECK.patch
Patch160: linux-2.6-32bit-mmap-exec-randomization.patch Patch160: linux-2.6-32bit-mmap-exec-randomization.patch
Patch161: linux-2.6-i386-nx-emulation.patch Patch161: linux-2.6-i386-nx-emulation.patch
Patch170: tmpfs-implement-generic-xattr-support.patch
Patch200: linux-2.6-debug-sizeof-structs.patch Patch200: linux-2.6-debug-sizeof-structs.patch
Patch202: linux-2.6-debug-taint-vm.patch Patch202: linux-2.6-debug-taint-vm.patch
Patch203: linux-2.6-debug-vm-would-have-oomkilled.patch Patch203: linux-2.6-debug-vm-would-have-oomkilled.patch
@ -706,8 +704,6 @@ Patch12016: disable-i8042-check-on-apple-mac.patch
Patch12018: neuter_intel_microcode_load.patch Patch12018: neuter_intel_microcode_load.patch
Patch12200: acpi_reboot.patch
# Runtime power management # Runtime power management
Patch12203: linux-2.6-usb-pci-autosuspend.patch Patch12203: linux-2.6-usb-pci-autosuspend.patch
Patch12204: linux-2.6-enable-more-pci-autosuspend.patch Patch12204: linux-2.6-enable-more-pci-autosuspend.patch
@ -715,14 +711,10 @@ Patch12205: runtime_pm_fixups.patch
Patch12303: dmar-disable-when-ricoh-multifunction.patch Patch12303: dmar-disable-when-ricoh-multifunction.patch
Patch12400: mm-vmscan-correct-use-pgdat_balanced-in-sleeping_prematurely.patch
Patch12401: mm-slub-do-not-wake-kswapd-for-slubs-speculative-high-order-allocations.patch Patch12401: mm-slub-do-not-wake-kswapd-for-slubs-speculative-high-order-allocations.patch
Patch12402: mm-slub-do-not-take-expensive-steps-for-slubs-speculative-high-order-allocations.patch Patch12402: mm-slub-do-not-take-expensive-steps-for-slubs-speculative-high-order-allocations.patch
Patch12403: mm-vmscan-if-kswapd-has-been-running-too-long-allow-it-to-sleep.patch Patch12403: mm-vmscan-if-kswapd-has-been-running-too-long-allow-it-to-sleep.patch
Patch12410: hid-multitouch-add-support-for-elo-touchsystems.patch
Patch12411: bluetooth-device-ids-for-ath3k-on-pegatron-lucid-tablets.patch
%endif %endif
BuildRoot: %{_tmppath}/kernel-%{KVERREL}-root BuildRoot: %{_tmppath}/kernel-%{KVERREL}-root
@ -1181,13 +1173,12 @@ ApplyPatch linux-2.6.29-sparc-IOC_TYPECHECK.patch
# #
# Exec shield # Exec shield
# #
ApplyPatch linux-2.6-i386-nx-emulation.patch #ApplyPatch linux-2.6-i386-nx-emulation.patch ###FIX
ApplyPatch linux-2.6-32bit-mmap-exec-randomization.patch ApplyPatch linux-2.6-32bit-mmap-exec-randomization.patch
# #
# bugfixes to drivers and filesystems # bugfixes to drivers and filesystems
# #
ApplyPatch tmpfs-implement-generic-xattr-support.patch
# ext4 # ext4
@ -1316,9 +1307,6 @@ ApplyPatch add-appleir-usb-driver.patch
ApplyPatch neuter_intel_microcode_load.patch ApplyPatch neuter_intel_microcode_load.patch
# various fixes for Apple and EFI
ApplyPatch acpi_reboot.patch
# Runtime PM # Runtime PM
#ApplyPatch linux-2.6-usb-pci-autosuspend.patch #ApplyPatch linux-2.6-usb-pci-autosuspend.patch
### Broken by implicit notify support & ACPICA rebase ### Broken by implicit notify support & ACPICA rebase
@ -1328,14 +1316,10 @@ ApplyPatch acpi_reboot.patch
# rhbz#605888 # rhbz#605888
ApplyPatch dmar-disable-when-ricoh-multifunction.patch ApplyPatch dmar-disable-when-ricoh-multifunction.patch
ApplyPatch mm-vmscan-correct-use-pgdat_balanced-in-sleeping_prematurely.patch
ApplyPatch mm-slub-do-not-wake-kswapd-for-slubs-speculative-high-order-allocations.patch ApplyPatch mm-slub-do-not-wake-kswapd-for-slubs-speculative-high-order-allocations.patch
ApplyPatch mm-slub-do-not-take-expensive-steps-for-slubs-speculative-high-order-allocations.patch ApplyPatch mm-slub-do-not-take-expensive-steps-for-slubs-speculative-high-order-allocations.patch
ApplyPatch mm-vmscan-if-kswapd-has-been-running-too-long-allow-it-to-sleep.patch ApplyPatch mm-vmscan-if-kswapd-has-been-running-too-long-allow-it-to-sleep.patch
ApplyPatch hid-multitouch-add-support-for-elo-touchsystems.patch
ApplyPatch bluetooth-device-ids-for-ath3k-on-pegatron-lucid-tablets.patch
# END OF PATCH APPLICATIONS # END OF PATCH APPLICATIONS
%endif %endif

11
linux-2.6-silence-noise.patch
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@ -34,23 +34,24 @@ ratelimited. It isn't particularly useful, so just remove it.
Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Dave Jones <davej@redhat.com>
--- linux-2.6.27.noarch/net/can/af_can.c~ 2008-12-11 16:53:48.000000000 -0500 --- a/net/can/af_can.c
+++ linux-2.6.27.noarch/net/can/af_can.c 2008-12-11 16:54:42.000000000 -0500 +++ b/net/can/af_can.c
@@ -134,13 +134,9 @@ static int can_create(struct net *net, s @@ -157,13 +157,9 @@ static int can_create(struct net *net, struct socket *sock, int protocol,
err = request_module("can-proto-%d", protocol); err = request_module("can-proto-%d", protocol);
/* /*
- * In case of error we only print a message but don't - * In case of error we only print a message but don't
- * return the error code immediately. Below we will - * return the error code immediately. Below we will
- * return -EPROTONOSUPPORT - * return -EPROTONOSUPPORT
+ * In case of error we don't return the error code immediately. + * In case of error we but don't return the error code immediately.
+ * Below we will return -EPROTONOSUPPORT + * Below we will return -EPROTONOSUPPORT
*/ */
- if (err && printk_ratelimit()) - if (err && printk_ratelimit())
- printk(KERN_ERR "can: request_module " - printk(KERN_ERR "can: request_module "
- "(can-proto-%d) failed.\n", protocol); - "(can-proto-%d) failed.\n", protocol);
cp = can_get_proto(protocol);
} }
#endif
This was removed in revision 1.6 of linux-2.6-silence-noise.patch This was removed in revision 1.6 of linux-2.6-silence-noise.patch
in ye olde CVS tree. I have no idea why. Originally the pr_debug in in ye olde CVS tree. I have no idea why. Originally the pr_debug in

48
mm-vmscan-correct-use-pgdat_balanced-in-sleeping_prematurely.patch
View File

@ -1,48 +0,0 @@
From linux-fsdevel-owner@vger.kernel.org Fri May 13 10:03:38 2011
From: Mel Gorman <mgorman@suse.de>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>,
Colin King <colin.king@canonical.com>,
Raghavendra D Prabhu <raghu.prabhu13@gmail.com>,
Jan Kara <jack@suse.cz>, Chris Mason <chris.mason@oracle.com>,
Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
Rik van Riel <riel@redhat.com>,
Johannes Weiner <hannes@cmpxchg.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-ext4 <linux-ext4@vger.kernel.org>,
Mel Gorman <mgorman@suse.de>
Subject: [PATCH 1/4] mm: vmscan: Correct use of pgdat_balanced in sleeping_prematurely
Date: Fri, 13 May 2011 15:03:21 +0100
Message-Id: <1305295404-12129-2-git-send-email-mgorman@suse.de>
X-Mailing-List: linux-fsdevel@vger.kernel.org
Johannes Weiner poined out that the logic in commit [1741c877: mm:
kswapd: keep kswapd awake for high-order allocations until a percentage
of the node is balanced] is backwards. Instead of allowing kswapd to go
to sleep when balancing for high order allocations, it keeps it kswapd
running uselessly.
From-but-was-not-signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Will-sign-off-after-Johannes: Mel Gorman <mgorman@suse.de>
---
mm/vmscan.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index f6b435c..af24d1e 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2286,7 +2286,7 @@ static bool sleeping_prematurely(pg_data_t *pgdat, int order, long remaining,
* must be balanced
*/
if (order)
- return pgdat_balanced(pgdat, balanced, classzone_idx);
+ return !pgdat_balanced(pgdat, balanced, classzone_idx);
else
return !all_zones_ok;
}
--
1.7.3.4

557
tmpfs-implement-generic-xattr-support.patch
View File

@ -1,557 +0,0 @@
From linux-fsdevel-owner@vger.kernel.org Fri May 13 07:16:45 2011
From: Miklos Szeredi <miklos@szeredi.hu>
To: Andrew Morton <akpm@linux-foundation.org>,
Hugh Dickins <hughd@google.com>
Subject: [PATCH v2] tmpfs: implement generic xattr support
CC: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
Michal Suchanek <hramrach@centrum.cz>,
Serge Hallyn <serge.hallyn@ubuntu.com>,
Eric Paris <eparis@redhat.com>,
James Morris <jmorris@namei.org>,
Christoph Hellwig <hch@infradead.org>
Date: Fri, 13 May 2011 13:16:35 +0200
Message-ID: <871v02lujw.fsf@tucsk.pomaz.szeredi.hu>
X-Mailing-List: linux-fsdevel@vger.kernel.org
[This update addresses comments from Hugh and Andrew]
From: Eric Paris <eparis@redhat.com>
This patch implements generic xattrs for tmpfs filesystems. The feodra
project, while trying to replace suid apps with file capabilities,
realized that tmpfs, which is used on the build systems, does not
support file capabilities and thus cannot be used to build packages
which use file capabilities. Xattrs are also needed for overlayfs.
The xattr interface is a bit, odd. If a filesystem does not implement any
{get,set,list}xattr functions the VFS will call into some random LSM hooks and
the running LSM can then implement some method for handling xattrs. SELinux
for example provides a method to support security.selinux but no other
security.* xattrs.
As it stands today when one enables CONFIG_TMPFS_POSIX_ACL tmpfs will have
xattr handler routines specifically to handle acls. Because of this tmpfs
would loose the VFS/LSM helpers to support the running LSM. To make up for
that tmpfs had stub functions that did nothing but call into the LSM hooks
which implement the helpers.
This new patch does not use the LSM fallback functions and instead
just implements a native get/set/list xattr feature for the full
security.* and trusted.* namespace like a normal filesystem. This
means that tmpfs can now support both security.selinux and
security.capability, which was not previously possible.
The basic implementation is that I attach a:
struct shmem_xattr {
struct list_head list; /* anchored by shmem_inode_info->xattr_list */
char *name;
size_t size;
char value[0];
};
Into the struct shmem_inode_info for each xattr that is set. This
implementation could easily support the user.* namespace as well,
except some care needs to be taken to prevent large amounts of
unswappable memory being allocated for unprivileged users.
[miklos: new config option, suport trusted.*, support symlinks]
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Acked-by: Serge Hallyn <serge.hallyn@ubuntu.com>
---
fs/Kconfig | 18 ++
include/linux/shmem_fs.h | 8 +
mm/shmem.c | 320 +++++++++++++++++++++++++++++++++++++++--------
3 files changed, 290 insertions(+), 56 deletions(-)
Index: linux-2.6/fs/Kconfig
===================================================================
--- linux-2.6.orig/fs/Kconfig 2011-05-13 12:26:31.000000000 +0200
+++ linux-2.6/fs/Kconfig 2011-05-13 12:29:34.000000000 +0200
@@ -121,9 +121,25 @@ config TMPFS
See <file:Documentation/filesystems/tmpfs.txt> for details.
+config TMPFS_XATTR
+ bool "Tmpfs extended attributes"
+ depends on TMPFS
+ default n
+ help
+ Extended attributes are name:value pairs associated with inodes by
+ the kernel or by users (see the attr(5) manual page, or visit
+ <http://acl.bestbits.at/> for details).
+
+ Currently this enables support for the trusted.* and
+ security.* namespaces.
+
+ If unsure, say N.
+
+ You need this for POSIX ACL support on tmpfs.
+
config TMPFS_POSIX_ACL
bool "Tmpfs POSIX Access Control Lists"
- depends on TMPFS
+ depends on TMPFS_XATTR
select GENERIC_ACL
help
POSIX Access Control Lists (ACLs) support permissions for users and
Index: linux-2.6/include/linux/shmem_fs.h
===================================================================
--- linux-2.6.orig/include/linux/shmem_fs.h 2011-05-13 12:26:31.000000000 +0200
+++ linux-2.6/include/linux/shmem_fs.h 2011-05-13 12:35:36.000000000 +0200
@@ -9,6 +9,8 @@
#define SHMEM_NR_DIRECT 16
+#define SHMEM_SYMLINK_INLINE_LEN (SHMEM_NR_DIRECT * sizeof(swp_entry_t))
+
struct shmem_inode_info {
spinlock_t lock;
unsigned long flags;
@@ -17,8 +19,12 @@ struct shmem_inode_info {
unsigned long next_index; /* highest alloced index + 1 */
struct shared_policy policy; /* NUMA memory alloc policy */
struct page *i_indirect; /* top indirect blocks page */
- swp_entry_t i_direct[SHMEM_NR_DIRECT]; /* first blocks */
+ union {
+ swp_entry_t i_direct[SHMEM_NR_DIRECT]; /* first blocks */
+ char inline_symlink[SHMEM_SYMLINK_INLINE_LEN];
+ };
struct list_head swaplist; /* chain of maybes on swap */
+ struct list_head xattr_list; /* list of shmem_xattr */
struct inode vfs_inode;
};
Index: linux-2.6/mm/shmem.c
===================================================================
--- linux-2.6.orig/mm/shmem.c 2011-05-13 12:26:31.000000000 +0200
+++ linux-2.6/mm/shmem.c 2011-05-13 12:36:08.000000000 +0200
@@ -99,6 +99,13 @@ static struct vfsmount *shm_mnt;
/* Pretend that each entry is of this size in directory's i_size */
#define BOGO_DIRENT_SIZE 20
+struct shmem_xattr {
+ struct list_head list; /* anchored by shmem_inode_info->xattr_list */
+ char *name; /* xattr name */
+ size_t size;
+ char value[0];
+};
+
/* Flag allocation requirements to shmem_getpage and shmem_swp_alloc */
enum sgp_type {
SGP_READ, /* don't exceed i_size, don't allocate page */
@@ -822,6 +829,7 @@ static int shmem_notify_change(struct de
static void shmem_evict_inode(struct inode *inode)
{
struct shmem_inode_info *info = SHMEM_I(inode);
+ struct shmem_xattr *xattr, *nxattr;
if (inode->i_mapping->a_ops == &shmem_aops) {
truncate_inode_pages(inode->i_mapping, 0);
@@ -834,6 +842,11 @@ static void shmem_evict_inode(struct ino
mutex_unlock(&shmem_swaplist_mutex);
}
}
+
+ list_for_each_entry_safe(xattr, nxattr, &info->xattr_list, list) {
+ kfree(xattr->name);
+ kfree(xattr);
+ }
BUG_ON(inode->i_blocks);
shmem_free_inode(inode->i_sb);
end_writeback(inode);
@@ -1616,6 +1629,7 @@ static struct inode *shmem_get_inode(str
spin_lock_init(&info->lock);
info->flags = flags & VM_NORESERVE;
INIT_LIST_HEAD(&info->swaplist);
+ INIT_LIST_HEAD(&info->xattr_list);
cache_no_acl(inode);
switch (mode & S_IFMT) {
@@ -2015,9 +2029,9 @@ static int shmem_symlink(struct inode *d
info = SHMEM_I(inode);
inode->i_size = len-1;
- if (len <= (char *)inode - (char *)info) {
+ if (len <= SHMEM_SYMLINK_INLINE_LEN) {
/* do it inline */
- memcpy(info, symname, len);
+ memcpy(info->inline_symlink, symname, len);
inode->i_op = &shmem_symlink_inline_operations;
} else {
error = shmem_getpage(inode, 0, &page, SGP_WRITE, NULL);
@@ -2043,7 +2057,7 @@ static int shmem_symlink(struct inode *d
static void *shmem_follow_link_inline(struct dentry *dentry, struct nameidata *nd)
{
- nd_set_link(nd, (char *)SHMEM_I(dentry->d_inode));
+ nd_set_link(nd, SHMEM_I(dentry->d_inode)->inline_symlink);
return NULL;
}
@@ -2067,63 +2081,253 @@ static void shmem_put_link(struct dentry
}
}
-static const struct inode_operations shmem_symlink_inline_operations = {
- .readlink = generic_readlink,
- .follow_link = shmem_follow_link_inline,
-};
-
-static const struct inode_operations shmem_symlink_inode_operations = {
- .readlink = generic_readlink,
- .follow_link = shmem_follow_link,
- .put_link = shmem_put_link,
-};
-
-#ifdef CONFIG_TMPFS_POSIX_ACL
+#ifdef CONFIG_TMPFS_XATTR
/*
- * Superblocks without xattr inode operations will get security.* xattr
- * support from the VFS "for free". As soon as we have any other xattrs
+ * Superblocks without xattr inode operations may get some security.* xattr
+ * support from the LSM "for free". As soon as we have any other xattrs
* like ACLs, we also need to implement the security.* handlers at
* filesystem level, though.
*/
-static size_t shmem_xattr_security_list(struct dentry *dentry, char *list,
- size_t list_len, const char *name,
- size_t name_len, int handler_flags)
+static int shmem_xattr_get(struct dentry *dentry, const char *name,
+ void *buffer, size_t size)
{
- return security_inode_listsecurity(dentry->d_inode, list, list_len);
-}
+ struct shmem_inode_info *info;
+ struct shmem_xattr *xattr;
+ int ret = -ENODATA;
-static int shmem_xattr_security_get(struct dentry *dentry, const char *name,
- void *buffer, size_t size, int handler_flags)
-{
- if (strcmp(name, "") == 0)
- return -EINVAL;
- return xattr_getsecurity(dentry->d_inode, name, buffer, size);
+ info = SHMEM_I(dentry->d_inode);
+
+ spin_lock(&info->lock);
+ list_for_each_entry(xattr, &info->xattr_list, list) {
+ if (strcmp(name, xattr->name))
+ continue;
+
+ ret = xattr->size;
+ if (buffer) {
+ if (size < xattr->size)
+ ret = -ERANGE;
+ else
+ memcpy(buffer, xattr->value, xattr->size);
+ }
+ break;
+ }
+ spin_unlock(&info->lock);
+ return ret;
}
-static int shmem_xattr_security_set(struct dentry *dentry, const char *name,
- const void *value, size_t size, int flags, int handler_flags)
+static int shmem_xattr_set(struct dentry *dentry, const char *name,
+ const void *value, size_t size, int flags)
{
- if (strcmp(name, "") == 0)
- return -EINVAL;
- return security_inode_setsecurity(dentry->d_inode, name, value,
- size, flags);
+ struct inode *inode = dentry->d_inode;
+ struct shmem_inode_info *info = SHMEM_I(inode);
+ struct shmem_xattr *xattr;
+ struct shmem_xattr *new_xattr = NULL;
+ size_t len;
+ int err = 0;
+
+ /* value == NULL means remove */
+ if (value) {
+ /* wrap around? */
+ len = sizeof(*new_xattr) + size;
+ if (len <= sizeof(*new_xattr))
+ return -ENOMEM;
+
+ new_xattr = kmalloc(len, GFP_KERNEL);
+ if (!new_xattr)
+ return -ENOMEM;
+
+ new_xattr->name = kstrdup(name, GFP_KERNEL);
+ if (!new_xattr->name) {
+ kfree(new_xattr);
+ return -ENOMEM;
+ }
+
+ new_xattr->size = size;
+ memcpy(new_xattr->value, value, size);
+ }
+
+ spin_lock(&info->lock);
+ list_for_each_entry(xattr, &info->xattr_list, list) {
+ if (!strcmp(name, xattr->name)) {
+ if (flags & XATTR_CREATE) {
+ xattr = new_xattr;
+ err = -EEXIST;
+ } else if (new_xattr) {
+ list_replace(&xattr->list, &new_xattr->list);
+ } else {
+ list_del(&xattr->list);
+ }
+ goto out;
+ }
+ }
+ if (flags & XATTR_REPLACE) {
+ xattr = new_xattr;
+ err = -ENODATA;
+ } else {
+ list_add(&new_xattr->list, &info->xattr_list);
+ xattr = NULL;
+ }
+out:
+ spin_unlock(&info->lock);
+ if (xattr)
+ kfree(xattr->name);
+ kfree(xattr);
+ return err;
}
-static const struct xattr_handler shmem_xattr_security_handler = {
- .prefix = XATTR_SECURITY_PREFIX,
- .list = shmem_xattr_security_list,
- .get = shmem_xattr_security_get,
- .set = shmem_xattr_security_set,
-};
static const struct xattr_handler *shmem_xattr_handlers[] = {
+#ifdef CONFIG_TMPFS_POSIX_ACL
&generic_acl_access_handler,
&generic_acl_default_handler,
- &shmem_xattr_security_handler,
+#endif
NULL
};
+
+static int shmem_xattr_validate(const char *name)
+{
+ struct { const char *prefix; size_t len; } arr[] = {
+ { XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN },
+ { XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN }
+ };
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(arr); i++) {
+ size_t preflen = arr[i].len;
+ if (strncmp(name, arr[i].prefix, preflen) == 0) {
+ if (!name[preflen])
+ return -EINVAL;
+ return 0;
+ }
+ }
+ return -EOPNOTSUPP;
+}
+
+static ssize_t shmem_getxattr(struct dentry *dentry, const char *name,
+ void *buffer, size_t size)
+{
+ int err;
+
+ /*
+ * If this is a request for a synthetic attribute in the system.*
+ * namespace use the generic infrastructure to resolve a handler
+ * for it via sb->s_xattr.
+ */
+ if (!strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN))
+ return generic_getxattr(dentry, name, buffer, size);
+
+ err = shmem_xattr_validate(name);
+ if (err)
+ return err;
+
+ return shmem_xattr_get(dentry, name, buffer, size);
+}
+
+static int shmem_setxattr(struct dentry *dentry, const char *name,
+ const void *value, size_t size, int flags)
+{
+ int err;
+
+ /*
+ * If this is a request for a synthetic attribute in the system.*
+ * namespace use the generic infrastructure to resolve a handler
+ * for it via sb->s_xattr.
+ */
+ if (!strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN))
+ return generic_setxattr(dentry, name, value, size, flags);
+
+ err = shmem_xattr_validate(name);
+ if (err)
+ return err;
+
+ if (size == 0)
+ value = ""; /* empty EA, do not remove */
+
+ return shmem_xattr_set(dentry, name, value, size, flags);
+
+}
+
+static int shmem_removexattr(struct dentry *dentry, const char *name)
+{
+ int err;
+
+ /*
+ * If this is a request for a synthetic attribute in the system.*
+ * namespace use the generic infrastructure to resolve a handler
+ * for it via sb->s_xattr.
+ */
+ if (!strncmp(name, XATTR_SYSTEM_PREFIX, XATTR_SYSTEM_PREFIX_LEN))
+ return generic_removexattr(dentry, name);
+
+ err = shmem_xattr_validate(name);
+ if (err)
+ return err;
+
+ return shmem_xattr_set(dentry, name, NULL, 0, XATTR_REPLACE);
+}
+
+static bool xattr_is_trusted(const char *name)
+{
+ return !strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN);
+}
+
+static ssize_t shmem_listxattr(struct dentry *dentry, char *buffer, size_t size)
+{
+ bool trusted = capable(CAP_SYS_ADMIN);
+ struct shmem_xattr *xattr;
+ struct shmem_inode_info *info;
+ size_t used = 0;
+
+ info = SHMEM_I(dentry->d_inode);
+
+ spin_lock(&info->lock);
+ list_for_each_entry(xattr, &info->xattr_list, list) {
+ size_t len;
+
+ /* skip "trusted." attributes for unprivileged callers */
+ if (!trusted && xattr_is_trusted(xattr->name))
+ continue;
+
+ len = strlen(xattr->name) + 1;
+ used += len;
+ if (buffer) {
+ if (size < used) {
+ used = -ERANGE;
+ break;
+ }
+ memcpy(buffer, xattr->name, len);
+ buffer += len;
+ }
+ }
+ spin_unlock(&info->lock);
+
+ return used;
+}
+#endif /* CONFIG_TMPFS_XATTR */
+
+static const struct inode_operations shmem_symlink_inline_operations = {
+ .readlink = generic_readlink,
+ .follow_link = shmem_follow_link_inline,
+#ifdef CONFIG_TMPFS_XATTR
+ .setxattr = shmem_setxattr,
+ .getxattr = shmem_getxattr,
+ .listxattr = shmem_listxattr,
+ .removexattr = shmem_removexattr,
+#endif
+};
+
+static const struct inode_operations shmem_symlink_inode_operations = {
+ .readlink = generic_readlink,
+ .follow_link = shmem_follow_link,
+ .put_link = shmem_put_link,
+#ifdef CONFIG_TMPFS_XATTR
+ .setxattr = shmem_setxattr,
+ .getxattr = shmem_getxattr,
+ .listxattr = shmem_listxattr,
+ .removexattr = shmem_removexattr,
#endif
+};
static struct dentry *shmem_get_parent(struct dentry *child)
{
@@ -2403,8 +2607,10 @@ int shmem_fill_super(struct super_block
sb->s_magic = TMPFS_MAGIC;
sb->s_op = &shmem_ops;
sb->s_time_gran = 1;
-#ifdef CONFIG_TMPFS_POSIX_ACL
+#ifdef CONFIG_TMPFS_XATTR
sb->s_xattr = shmem_xattr_handlers;
+#endif
+#ifdef CONFIG_TMPFS_POSIX_ACL
sb->s_flags |= MS_POSIXACL;
#endif
@@ -2502,11 +2708,13 @@ static const struct file_operations shme
static const struct inode_operations shmem_inode_operations = {
.setattr = shmem_notify_change,
.truncate_range = shmem_truncate_range,
+#ifdef CONFIG_TMPFS_XATTR
+ .setxattr = shmem_setxattr,
+ .getxattr = shmem_getxattr,
+ .listxattr = shmem_listxattr,
+ .removexattr = shmem_removexattr,
+#endif
#ifdef CONFIG_TMPFS_POSIX_ACL
- .setxattr = generic_setxattr,
- .getxattr = generic_getxattr,
- .listxattr = generic_listxattr,
- .removexattr = generic_removexattr,
.check_acl = generic_check_acl,
#endif
@@ -2524,23 +2732,27 @@ static const struct inode_operations shm
.mknod = shmem_mknod,
.rename = shmem_rename,
#endif
+#ifdef CONFIG_TMPFS_XATTR
+ .setxattr = shmem_setxattr,
+ .getxattr = shmem_getxattr,
+ .listxattr = shmem_listxattr,
+ .removexattr = shmem_removexattr,
+#endif
#ifdef CONFIG_TMPFS_POSIX_ACL
.setattr = shmem_notify_change,
- .setxattr = generic_setxattr,
- .getxattr = generic_getxattr,
- .listxattr = generic_listxattr,
- .removexattr = generic_removexattr,
.check_acl = generic_check_acl,
#endif
};
static const struct inode_operations shmem_special_inode_operations = {
+#ifdef CONFIG_TMPFS_XATTR
+ .setxattr = shmem_setxattr,
+ .getxattr = shmem_getxattr,
+ .listxattr = shmem_listxattr,
+ .removexattr = shmem_removexattr,
+#endif
#ifdef CONFIG_TMPFS_POSIX_ACL
.setattr = shmem_notify_change,
- .setxattr = generic_setxattr,
- .getxattr = generic_getxattr,
- .listxattr = generic_listxattr,
- .removexattr = generic_removexattr,
.check_acl = generic_check_acl,
#endif
};
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