Patched in Tegra support.

1 files changed, 343 insertions, 5 deletions

diff --git a/include/linux/capability.h b/include/linux/capability.h
index 98503b79236..c4211235000 100644
--- a/include/linux/capability.h
+++ b/include/linux/capability.h
@@ -9,11 +9,82 @@
  *
  * ftp://www.kernel.org/pub/linux/libs/security/linux-privs/kernel-2.6/
  */
+
 #ifndef _LINUX_CAPABILITY_H
 #define _LINUX_CAPABILITY_H
 
-#include <uapi/linux/capability.h>
+#include <linux/types.h>
+
+struct task_struct;
+
+/* User-level do most of the mapping between kernel and user
+   capabilities based on the version tag given by the kernel. The
+   kernel might be somewhat backwards compatible, but don't bet on
+   it. */
+
+/* Note, cap_t, is defined by POSIX (draft) to be an "opaque" pointer to
+   a set of three capability sets.  The transposition of 3*the
+   following structure to such a composite is better handled in a user
+   library since the draft standard requires the use of malloc/free
+   etc.. */
+
+#define _LINUX_CAPABILITY_VERSION_1  0x19980330
+#define _LINUX_CAPABILITY_U32S_1     1
+
+#define _LINUX_CAPABILITY_VERSION_2  0x20071026  /* deprecated - use v3 */
+#define _LINUX_CAPABILITY_U32S_2     2
+
+#define _LINUX_CAPABILITY_VERSION_3  0x20080522
+#define _LINUX_CAPABILITY_U32S_3     2
+
+typedef struct __user_cap_header_struct {
+        __u32 version;
+        int pid;
+} __user *cap_user_header_t;
+
+typedef struct __user_cap_data_struct {
+        __u32 effective;
+        __u32 permitted;
+        __u32 inheritable;
+} __user *cap_user_data_t;
+
+
+#define VFS_CAP_REVISION_MASK   0xFF000000
+#define VFS_CAP_REVISION_SHIFT  24
+#define VFS_CAP_FLAGS_MASK      ~VFS_CAP_REVISION_MASK
+#define VFS_CAP_FLAGS_EFFECTIVE 0x000001
+
+#define VFS_CAP_REVISION_1      0x01000000
+#define VFS_CAP_U32_1           1
+#define XATTR_CAPS_SZ_1         (sizeof(__le32)*(1 + 2*VFS_CAP_U32_1))
+
+#define VFS_CAP_REVISION_2      0x02000000
+#define VFS_CAP_U32_2           2
+#define XATTR_CAPS_SZ_2         (sizeof(__le32)*(1 + 2*VFS_CAP_U32_2))
 
+#define XATTR_CAPS_SZ           XATTR_CAPS_SZ_2
+#define VFS_CAP_U32             VFS_CAP_U32_2
+#define VFS_CAP_REVISION        VFS_CAP_REVISION_2
+
+struct vfs_cap_data {
+        __le32 magic_etc;            /* Little endian */
+        struct {
+                __le32 permitted;    /* Little endian */
+                __le32 inheritable;  /* Little endian */
+        } data[VFS_CAP_U32];
+};
+
+#ifndef __KERNEL__
+
+/*
+ * Backwardly compatible definition for source code - trapped in a
+ * 32-bit world. If you find you need this, please consider using
+ * libcap to untrap yourself...
+ */
+#define _LINUX_CAPABILITY_VERSION  _LINUX_CAPABILITY_VERSION_1
+#define _LINUX_CAPABILITY_U32S     _LINUX_CAPABILITY_U32S_1
+
+#else
 
 #define _KERNEL_CAPABILITY_VERSION _LINUX_CAPABILITY_VERSION_3
 #define _KERNEL_CAPABILITY_U32S    _LINUX_CAPABILITY_U32S_3
@@ -34,14 +105,281 @@ struct cpu_vfs_cap_data {
 #define _USER_CAP_HEADER_SIZE  (sizeof(struct __user_cap_header_struct))
 #define _KERNEL_CAP_T_SIZE     (sizeof(kernel_cap_t))
 
+#endif
+
+
+/**
+ ** POSIX-draft defined capabilities.
+ **/
+
+/* In a system with the [_POSIX_CHOWN_RESTRICTED] option defined, this
+   overrides the restriction of changing file ownership and group
+   ownership. */
+
+#define CAP_CHOWN            0
+
+/* Override all DAC access, including ACL execute access if
+   [_POSIX_ACL] is defined. Excluding DAC access covered by
+   CAP_LINUX_IMMUTABLE. */
+
+#define CAP_DAC_OVERRIDE     1
+
+/* Overrides all DAC restrictions regarding read and search on files
+   and directories, including ACL restrictions if [_POSIX_ACL] is
+   defined. Excluding DAC access covered by CAP_LINUX_IMMUTABLE. */
+
+#define CAP_DAC_READ_SEARCH  2
+
+/* Overrides all restrictions about allowed operations on files, where
+   file owner ID must be equal to the user ID, except where CAP_FSETID
+   is applicable. It doesn't override MAC and DAC restrictions. */
+
+#define CAP_FOWNER           3
+
+/* Overrides the following restrictions that the effective user ID
+   shall match the file owner ID when setting the S_ISUID and S_ISGID
+   bits on that file; that the effective group ID (or one of the
+   supplementary group IDs) shall match the file owner ID when setting
+   the S_ISGID bit on that file; that the S_ISUID and S_ISGID bits are
+   cleared on successful return from chown(2) (not implemented). */
+
+#define CAP_FSETID           4
+
+/* Overrides the restriction that the real or effective user ID of a
+   process sending a signal must match the real or effective user ID
+   of the process receiving the signal. */
+
+#define CAP_KILL             5
+
+/* Allows setgid(2) manipulation */
+/* Allows setgroups(2) */
+/* Allows forged gids on socket credentials passing. */
+
+#define CAP_SETGID           6
+
+/* Allows set*uid(2) manipulation (including fsuid). */
+/* Allows forged pids on socket credentials passing. */
+
+#define CAP_SETUID           7
+
+
+/**
+ ** Linux-specific capabilities
+ **/
+
+/* Without VFS support for capabilities:
+ *   Transfer any capability in your permitted set to any pid,
+ *   remove any capability in your permitted set from any pid
+ * With VFS support for capabilities (neither of above, but)
+ *   Add any capability from current's capability bounding set
+ *       to the current process' inheritable set
+ *   Allow taking bits out of capability bounding set
+ *   Allow modification of the securebits for a process
+ */
+
+#define CAP_SETPCAP          8
+
+/* Allow modification of S_IMMUTABLE and S_APPEND file attributes */
+
+#define CAP_LINUX_IMMUTABLE  9
+
+/* Allows binding to TCP/UDP sockets below 1024 */
+/* Allows binding to ATM VCIs below 32 */
+
+#define CAP_NET_BIND_SERVICE 10
+
+/* Allow broadcasting, listen to multicast */
+
+#define CAP_NET_BROADCAST    11
+
+/* Allow interface configuration */
+/* Allow administration of IP firewall, masquerading and accounting */
+/* Allow setting debug option on sockets */
+/* Allow modification of routing tables */
+/* Allow setting arbitrary process / process group ownership on
+   sockets */
+/* Allow binding to any address for transparent proxying */
+/* Allow setting TOS (type of service) */
+/* Allow setting promiscuous mode */
+/* Allow clearing driver statistics */
+/* Allow multicasting */
+/* Allow read/write of device-specific registers */
+/* Allow activation of ATM control sockets */
+
+#define CAP_NET_ADMIN        12
+
+/* Allow use of RAW sockets */
+/* Allow use of PACKET sockets */
+
+#define CAP_NET_RAW          13
+
+/* Allow locking of shared memory segments */
+/* Allow mlock and mlockall (which doesn't really have anything to do
+   with IPC) */
+
+#define CAP_IPC_LOCK         14
+
+/* Override IPC ownership checks */
+
+#define CAP_IPC_OWNER        15
+
+/* Insert and remove kernel modules - modify kernel without limit */
+#define CAP_SYS_MODULE       16
+
+/* Allow ioperm/iopl access */
+/* Allow sending USB messages to any device via /proc/bus/usb */
+
+#define CAP_SYS_RAWIO        17
+
+/* Allow use of chroot() */
+
+#define CAP_SYS_CHROOT       18
+
+/* Allow ptrace() of any process */
+
+#define CAP_SYS_PTRACE       19
+
+/* Allow configuration of process accounting */
+
+#define CAP_SYS_PACCT        20
+
+/* Allow configuration of the secure attention key */
+/* Allow administration of the random device */
+/* Allow examination and configuration of disk quotas */
+/* Allow setting the domainname */
+/* Allow setting the hostname */
+/* Allow calling bdflush() */
+/* Allow mount() and umount(), setting up new smb connection */
+/* Allow some autofs root ioctls */
+/* Allow nfsservctl */
+/* Allow VM86_REQUEST_IRQ */
+/* Allow to read/write pci config on alpha */
+/* Allow irix_prctl on mips (setstacksize) */
+/* Allow flushing all cache on m68k (sys_cacheflush) */
+/* Allow removing semaphores */
+/* Used instead of CAP_CHOWN to "chown" IPC message queues, semaphores
+   and shared memory */
+/* Allow locking/unlocking of shared memory segment */
+/* Allow turning swap on/off */
+/* Allow forged pids on socket credentials passing */
+/* Allow setting readahead and flushing buffers on block devices */
+/* Allow setting geometry in floppy driver */
+/* Allow turning DMA on/off in xd driver */
+/* Allow administration of md devices (mostly the above, but some
+   extra ioctls) */
+/* Allow tuning the ide driver */
+/* Allow access to the nvram device */
+/* Allow administration of apm_bios, serial and bttv (TV) device */
+/* Allow manufacturer commands in isdn CAPI support driver */
+/* Allow reading non-standardized portions of pci configuration space */
+/* Allow DDI debug ioctl on sbpcd driver */
+/* Allow setting up serial ports */
+/* Allow sending raw qic-117 commands */
+/* Allow enabling/disabling tagged queuing on SCSI controllers and sending
+   arbitrary SCSI commands */
+/* Allow setting encryption key on loopback filesystem */
+/* Allow setting zone reclaim policy */
+
+#define CAP_SYS_ADMIN        21
+
+/* Allow use of reboot() */
+
+#define CAP_SYS_BOOT         22
+
+/* Allow raising priority and setting priority on other (different
+   UID) processes */
+/* Allow use of FIFO and round-robin (realtime) scheduling on own
+   processes and setting the scheduling algorithm used by another
+   process. */
+/* Allow setting cpu affinity on other processes */
+
+#define CAP_SYS_NICE         23
+
+/* Override resource limits. Set resource limits. */
+/* Override quota limits. */
+/* Override reserved space on ext2 filesystem */
+/* Modify data journaling mode on ext3 filesystem (uses journaling
+   resources) */
+/* NOTE: ext2 honors fsuid when checking for resource overrides, so
+   you can override using fsuid too */
+/* Override size restrictions on IPC message queues */
+/* Allow more than 64hz interrupts from the real-time clock */
+/* Override max number of consoles on console allocation */
+/* Override max number of keymaps */
+
+#define CAP_SYS_RESOURCE     24
+
+/* Allow manipulation of system clock */
+/* Allow irix_stime on mips */
+/* Allow setting the real-time clock */
+
+#define CAP_SYS_TIME         25
+
+/* Allow configuration of tty devices */
+/* Allow vhangup() of tty */
+
+#define CAP_SYS_TTY_CONFIG   26
+
+/* Allow the privileged aspects of mknod() */
+
+#define CAP_MKNOD            27
+
+/* Allow taking of leases on files */
+
+#define CAP_LEASE            28
+
+#define CAP_AUDIT_WRITE      29
+
+#define CAP_AUDIT_CONTROL    30
+
+#define CAP_SETFCAP          31
+
+/* Override MAC access.
+   The base kernel enforces no MAC policy.
+   An LSM may enforce a MAC policy, and if it does and it chooses
+   to implement capability based overrides of that policy, this is
+   the capability it should use to do so. */
+
+#define CAP_MAC_OVERRIDE     32
+
+/* Allow MAC configuration or state changes.
+   The base kernel requires no MAC configuration.
+   An LSM may enforce a MAC policy, and if it does and it chooses
+   to implement capability based checks on modifications to that
+   policy or the data required to maintain it, this is the
+   capability it should use to do so. */
+
+#define CAP_MAC_ADMIN        33
+
+/* Allow configuring the kernel's syslog (printk behaviour) */
+
+#define CAP_SYSLOG           34
+
+/* Allow triggering something that will wake the system */
+
+#define CAP_WAKE_ALARM            35
+
+
+#define CAP_LAST_CAP         CAP_WAKE_ALARM
+
+#define cap_valid(x) ((x) >= 0 && (x) <= CAP_LAST_CAP)
+
+/*
+ * Bit location of each capability (used by user-space library and kernel)
+ */
+
+#define CAP_TO_INDEX(x)     ((x) >> 5)        /* 1 << 5 == bits in __u32 */
+#define CAP_TO_MASK(x)      (1 << ((x) & 31)) /* mask for indexed __u32 */
+
+#ifdef __KERNEL__
 
-struct inode;
 struct dentry;
 struct user_namespace;
 
 struct user_namespace *current_user_ns(void);
 
 extern const kernel_cap_t __cap_empty_set;
+extern const kernel_cap_t __cap_full_set;
 extern const kernel_cap_t __cap_init_eff_set;
 
 /*
@@ -205,14 +543,14 @@ extern bool has_capability(struct task_struct *t, int cap);
 extern bool has_ns_capability(struct task_struct *t,
                               struct user_namespace *ns, int cap);
 extern bool has_capability_noaudit(struct task_struct *t, int cap);
-extern bool has_ns_capability_noaudit(struct task_struct *t,
-                                      struct user_namespace *ns, int cap);
 extern bool capable(int cap);
 extern bool ns_capable(struct user_namespace *ns, int cap);
+extern bool task_ns_capable(struct task_struct *t, int cap);
 extern bool nsown_capable(int cap);
-extern bool inode_capable(const struct inode *inode, int cap);
 
 /* audit system wants to get cap info from files as well */
 extern int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data *cpu_caps);
 
+#endif /* __KERNEL__ */
+
 #endif /* !_LINUX_CAPABILITY_H */