Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...

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

diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
index 2d956cd..b7fc55e 100644 (file)
--- a/include/linux/binfmts.h
+++ b/include/linux/binfmts.h
@@ -6,29 +6,39 @@
 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__
 
+#define CORENAME_MAX_SIZE 128
+
 /*
  * This structure is used to hold the arguments that are used when loading binaries.
  */
 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;
        struct file * file;
        int e_uid, e_gid;
-       kernel_cap_t cap_inheritable, cap_permitted, cap_effective;
+       kernel_cap_t cap_inheritable, cap_permitted;
+       bool cap_effective;
        void *security;
        int argc, envc;
        char * filename;        /* Name of binary as seen by procps */
@@ -38,6 +48,7 @@ struct linux_binprm{
        unsigned interp_flags;
        unsigned interp_data;
        unsigned long loader, exec;
+       unsigned long argv_len;
 };
 
 #define BINPRM_FLAGS_ENFORCE_NONDUMP_BIT 0
@@ -53,20 +64,20 @@ struct linux_binprm{
  * 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)(long signr, struct pt_regs *regs, struct file *file, unsigned long limit);
        unsigned long min_coredump;     /* minimal dump size */
        int hasvdso;
 };
 
 extern int register_binfmt(struct linux_binfmt *);
-extern int unregister_binfmt(struct linux_binfmt *);
+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);
 
@@ -83,6 +94,7 @@ 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);