netfilter: nf_conntrack: fix hash resizing with namespaces

[safe/jmp/linux-2.6] / include / linux / binfmts.h

diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
index e1a7083..cd4349b 100644 (file)
--- a/include/linux/binfmts.h
+++ b/include/linux/binfmts.h
@@ -6,16 +6,19 @@
 struct pt_regs;
 
 /*
- * MAX_ARG_PAGES defines the number of pages allocated for arguments
- * and envelope for the new program. 32 should suffice, this gives
- * a maximum env+arg of 128kB w/4KB pages!
+ * These are the maximum length and maximum number of strings passed to the
+ * execve() system call.  MAX_ARG_STRLEN is essentially random but serves to
+ * prevent the kernel from being unduly impacted by misaddressed pointers.
+ * MAX_ARG_STRINGS is chosen to fit in a signed 32-bit integer.
  */
-#define MAX_ARG_PAGES 32
+#define MAX_ARG_STRLEN (PAGE_SIZE * 32)
+#define MAX_ARG_STRINGS 0x7FFFFFFF
 
 /* sizeof(linux_binprm->buf) */
 #define BINPRM_BUF_SIZE 128
 
 #ifdef __KERNEL__
+#include <linux/list.h>
 
 #define CORENAME_MAX_SIZE 128
 
@@ -24,14 +27,28 @@ struct pt_regs;
  */
 struct linux_binprm{
        char buf[BINPRM_BUF_SIZE];
+#ifdef CONFIG_MMU
+       struct vm_area_struct *vma;
+#else
+# define MAX_ARG_PAGES 32
        struct page *page[MAX_ARG_PAGES];
+#endif
        struct mm_struct *mm;
        unsigned long p; /* current top of mem */
-       int sh_bang;
+       unsigned int
+               cred_prepared:1,/* true if creds already prepared (multiple
+                                * preps happen for interpreters) */
+               cap_effective:1;/* true if has elevated effective capabilities,
+                                * false if not; except for init which inherits
+                                * its parent's caps anyway */
+#ifdef __alpha__
+       unsigned int taso:1;
+#endif
+       unsigned int recursion_depth;
        struct file * file;
-       int e_uid, e_gid;
-       kernel_cap_t cap_inheritable, cap_permitted, cap_effective;
-       void *security;
+       struct cred *cred;      /* new credentials */
+       int unsafe;             /* how unsafe this exec is (mask of LSM_UNSAFE_*) */
+       unsigned int per_clear; /* bits to clear in current->personality */
        int argc, envc;
        char * filename;        /* Name of binary as seen by procps */
        char * interp;          /* Name of the binary really executed. Most
@@ -49,26 +66,47 @@ struct linux_binprm{
 #define BINPRM_FLAGS_EXECFD_BIT 1
 #define BINPRM_FLAGS_EXECFD (1 << BINPRM_FLAGS_EXECFD_BIT)
 
+#define BINPRM_MAX_RECURSION 4
+
+/* Function parameter for binfmt->coredump */
+struct coredump_params {
+       long signr;
+       struct pt_regs *regs;
+       struct file *file;
+       unsigned long limit;
+};
 
 /*
  * This structure defines the functions that are used to load the binary formats that
  * linux accepts.
  */
 struct linux_binfmt {
-       struct linux_binfmt * next;
+       struct list_head lh;
        struct module *module;
        int (*load_binary)(struct linux_binprm *, struct  pt_regs * regs);
        int (*load_shlib)(struct file *);
-       int (*core_dump)(long signr, struct pt_regs * regs, struct file * file);
+       int (*core_dump)(struct coredump_params *cprm);
        unsigned long min_coredump;     /* minimal dump size */
        int hasvdso;
 };
 
-extern int register_binfmt(struct linux_binfmt *);
-extern int unregister_binfmt(struct linux_binfmt *);
+extern int __register_binfmt(struct linux_binfmt *fmt, int insert);
+
+/* Registration of default binfmt handlers */
+static inline int register_binfmt(struct linux_binfmt *fmt)
+{
+       return __register_binfmt(fmt, 0);
+}
+/* Same as above, but adds a new binfmt at the top of the list */
+static inline int insert_binfmt(struct linux_binfmt *fmt)
+{
+       return __register_binfmt(fmt, 1);
+}
+
+extern void unregister_binfmt(struct linux_binfmt *);
 
 extern int prepare_binprm(struct linux_binprm *);
-extern void remove_arg_zero(struct linux_binprm *);
+extern int __must_check remove_arg_zero(struct linux_binprm *);
 extern int search_binary_handler(struct linux_binprm *,struct pt_regs *);
 extern int flush_old_exec(struct linux_binprm * bprm);
 
@@ -85,10 +123,13 @@ extern int suid_dumpable;
 extern int setup_arg_pages(struct linux_binprm * bprm,
                           unsigned long stack_top,
                           int executable_stack);
+extern int bprm_mm_init(struct linux_binprm *bprm);
 extern int copy_strings_kernel(int argc,char ** argv,struct linux_binprm *bprm);
-extern void compute_creds(struct linux_binprm *binprm);
-extern int do_coredump(long signr, int exit_code, struct pt_regs * regs);
-extern int set_binfmt(struct linux_binfmt *new);
+extern int prepare_bprm_creds(struct linux_binprm *bprm);
+extern void install_exec_creds(struct linux_binprm *bprm);
+extern void do_coredump(long signr, int exit_code, struct pt_regs *regs);
+extern void set_binfmt(struct linux_binfmt *new);
+extern void free_bprm(struct linux_binprm *);
 
 #endif /* __KERNEL__ */
 #endif /* _LINUX_BINFMTS_H */