Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 114 insertions, 0 deletions

diff --git a/include/linux/personality.h b/include/linux/personality.h
new file mode 100644
index 000000000000..80d780e5a8f5
--- /dev/null
+++ b/include/linux/personality.h
@@ -0,0 +1,114 @@
+#ifndef _LINUX_PERSONALITY_H
+#define _LINUX_PERSONALITY_H
+
+/*
+ * Handling of different ABIs (personalities).
+ */
+
+struct exec_domain;
+struct pt_regs;
+
+extern int              register_exec_domain(struct exec_domain *);
+extern int              unregister_exec_domain(struct exec_domain *);
+extern int              __set_personality(unsigned long);
+
+/*
+ * Flags for bug emulation.
+ *
+ * These occupy the top three bytes.
+ */
+enum {
+        ADDR_NO_RANDOMIZE =     0x0040000,      /* disable randomization of VA space */
+        FDPIC_FUNCPTRS =        0x0080000,      /* userspace function ptrs point to descriptors
+                                                 * (signal handling)
+                                                 */
+        MMAP_PAGE_ZERO =        0x0100000,
+        ADDR_COMPAT_LAYOUT =    0x0200000,
+        READ_IMPLIES_EXEC =     0x0400000,
+        ADDR_LIMIT_32BIT =      0x0800000,
+        SHORT_INODE =           0x1000000,
+        WHOLE_SECONDS =         0x2000000,
+        STICKY_TIMEOUTS =       0x4000000,
+        ADDR_LIMIT_3GB =        0x8000000,
+};
+
+/*
+ * Security-relevant compatibility flags that must be
+ * cleared upon setuid or setgid exec:
+ */
+#define PER_CLEAR_ON_SETID (READ_IMPLIES_EXEC|ADDR_NO_RANDOMIZE)
+
+/*
+ * Personality types.
+ *
+ * These go in the low byte.  Avoid using the top bit, it will
+ * conflict with error returns.
+ */
+enum {
+        PER_LINUX =             0x0000,
+        PER_LINUX_32BIT =       0x0000 | ADDR_LIMIT_32BIT,
+        PER_LINUX_FDPIC =       0x0000 | FDPIC_FUNCPTRS,
+        PER_SVR4 =              0x0001 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
+        PER_SVR3 =              0x0002 | STICKY_TIMEOUTS | SHORT_INODE,
+        PER_SCOSVR3 =           0x0003 | STICKY_TIMEOUTS |
+                                         WHOLE_SECONDS | SHORT_INODE,
+        PER_OSR5 =              0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS,
+        PER_WYSEV386 =          0x0004 | STICKY_TIMEOUTS | SHORT_INODE,
+        PER_ISCR4 =             0x0005 | STICKY_TIMEOUTS,
+        PER_BSD =               0x0006,
+        PER_SUNOS =             0x0006 | STICKY_TIMEOUTS,
+        PER_XENIX =             0x0007 | STICKY_TIMEOUTS | SHORT_INODE,
+        PER_LINUX32 =           0x0008,
+        PER_LINUX32_3GB =       0x0008 | ADDR_LIMIT_3GB,
+        PER_IRIX32 =            0x0009 | STICKY_TIMEOUTS,/* IRIX5 32-bit */
+        PER_IRIXN32 =           0x000a | STICKY_TIMEOUTS,/* IRIX6 new 32-bit */
+        PER_IRIX64 =            0x000b | STICKY_TIMEOUTS,/* IRIX6 64-bit */
+        PER_RISCOS =            0x000c,
+        PER_SOLARIS =           0x000d | STICKY_TIMEOUTS,
+        PER_UW7 =               0x000e | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
+        PER_OSF4 =              0x000f,                  /* OSF/1 v4 */
+        PER_HPUX =              0x0010,
+        PER_MASK =              0x00ff,
+};
+
+
+/*
+ * Description of an execution domain.
+ * 
+ * The first two members are refernced from assembly source
+ * and should stay where they are unless explicitly needed.
+ */
+typedef void (*handler_t)(int, struct pt_regs *);
+
+struct exec_domain {
+        const char              *name;          /* name of the execdomain */
+        handler_t               handler;        /* handler for syscalls */
+        unsigned char           pers_low;       /* lowest personality */
+        unsigned char           pers_high;      /* highest personality */
+        unsigned long           *signal_map;    /* signal mapping */
+        unsigned long           *signal_invmap; /* reverse signal mapping */
+        struct map_segment      *err_map;       /* error mapping */
+        struct map_segment      *socktype_map;  /* socket type mapping */
+        struct map_segment      *sockopt_map;   /* socket option mapping */
+        struct map_segment      *af_map;        /* address family mapping */
+        struct module           *module;        /* module context of the ed. */
+        struct exec_domain      *next;          /* linked list (internal) */
+};
+
+/*
+ * Return the base personality without flags.
+ */
+#define personality(pers)       (pers & PER_MASK)
+
+/*
+ * Personality of the currently running process.
+ */
+#define get_personality         (current->personality)
+
+/*
+ * Change personality of the currently running process.
+ */
+#define set_personality(pers) \
+        ((current->personality == pers) ? 0 : __set_personality(pers))
+
+#endif /* _LINUX_PERSONALITY_H */