patch-2.4.10 linux/include/linux/personality.h
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- Lines: 187
- Date:
Mon Sep 10 13:04:33 2001
- Orig file:
v2.4.9/linux/include/linux/personality.h
- Orig date:
Mon Dec 11 12:49:54 2000
diff -u --recursive --new-file v2.4.9/linux/include/linux/personality.h linux/include/linux/personality.h
@@ -1,68 +1,126 @@
-#ifndef _PERSONALITY_H
-#define _PERSONALITY_H
+#ifndef _LINUX_PERSONALITY_H
+#define _LINUX_PERSONALITY_H
-#include <linux/linkage.h>
-#include <linux/ptrace.h>
-#include <asm/current.h>
-
-/* Flags for bug emulation. These occupy the top three bytes. */
-#define STICKY_TIMEOUTS 0x4000000
-#define WHOLE_SECONDS 0x2000000
-#define ADDR_LIMIT_32BIT 0x0800000
-
-/* Personality types. These go in the low byte. Avoid using the top bit,
- * it will conflict with error returns.
- */
-#define PER_MASK (0x00ff)
-#define PER_LINUX (0x0000)
-#define PER_LINUX_32BIT (0x0000 | ADDR_LIMIT_32BIT)
-#define PER_SVR4 (0x0001 | STICKY_TIMEOUTS)
-#define PER_SVR3 (0x0002 | STICKY_TIMEOUTS)
-#define PER_SCOSVR3 (0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS)
-#define PER_WYSEV386 (0x0004 | STICKY_TIMEOUTS)
-#define PER_ISCR4 (0x0005 | STICKY_TIMEOUTS)
-#define PER_BSD (0x0006)
-#define PER_SUNOS (PER_BSD | STICKY_TIMEOUTS)
-#define PER_XENIX (0x0007 | STICKY_TIMEOUTS)
-#define PER_LINUX32 (0x0008)
-#define PER_IRIX32 (0x0009 | STICKY_TIMEOUTS) /* IRIX5 32-bit */
-#define PER_IRIXN32 (0x000a | STICKY_TIMEOUTS) /* IRIX6 new 32-bit */
-#define PER_IRIX64 (0x000b | STICKY_TIMEOUTS) /* IRIX6 64-bit */
-#define PER_RISCOS (0x000c)
-#define PER_SOLARIS (0x000d | STICKY_TIMEOUTS)
-
-/* Prototype for an lcall7 syscall handler. */
-typedef void (*lcall7_func)(int, struct pt_regs *);
-
-
-/* Description of an execution domain - personality range supported,
- * lcall7 syscall handler, start up / shut down functions etc.
- * N.B. The name and lcall7 handler must be where they are since the
- * offset of the handler is hard coded in kernel/sys_call.S.
+/*
+ * 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);
+
+
+/*
+ * Sysctl variables related to binary emulation.
+ */
+extern unsigned long abi_defhandler_coff;
+extern unsigned long abi_defhandler_elf;
+extern unsigned long abi_defhandler_lcall7;
+extern unsigned long abi_defhandler_libcso;
+extern int abi_fake_utsname;
+
+
+/*
+ * Flags for bug emulation.
+ *
+ * These occupy the top three bytes.
+ */
+enum {
+ MMAP_PAGE_ZERO = 0x0100000,
+ ADDR_LIMIT_32BIT = 0x0800000,
+ SHORT_INODE = 0x1000000,
+ WHOLE_SECONDS = 0x2000000,
+ STICKY_TIMEOUTS = 0x4000000,
+};
+
+/*
+ * 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_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_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_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;
- lcall7_func handler;
- unsigned char pers_low, pers_high;
- unsigned long * signal_map;
- unsigned long * signal_invmap;
- struct module * module;
- struct exec_domain *next;
+ 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) */
};
-extern struct exec_domain default_exec_domain;
+/*
+ * 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))
+
+/*
+ * Load an execution domain.
+ */
+#define get_exec_domain(ep) \
+do { \
+ if (ep != NULL && ep->module != NULL) \
+ __MOD_INC_USE_COUNT(ep->module); \
+} while (0)
-extern int register_exec_domain(struct exec_domain *it);
-extern int unregister_exec_domain(struct exec_domain *it);
-#define put_exec_domain(it) \
- if (it && it->module) __MOD_DEC_USE_COUNT(it->module);
-#define get_exec_domain(it) \
- if (it && it->module) __MOD_INC_USE_COUNT(it->module);
-extern void __set_personality(unsigned long personality);
-#define set_personality(pers) do { \
- if (current->personality != pers) \
- __set_personality(pers); \
+/*
+ * Unload an execution domain.
+ */
+#define put_exec_domain(ep) \
+do { \
+ if (ep != NULL && ep->module != NULL) \
+ __MOD_DEC_USE_COUNT(ep->module); \
} while (0)
-asmlinkage long sys_personality(unsigned long personality);
-#endif /* _PERSONALITY_H */
+#endif /* _LINUX_PERSONALITY_H */
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