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-rw-r--r--include/linux/binfmts.h87
1 files changed, 87 insertions, 0 deletions
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
new file mode 100644
index 000000000000..54f820832c73
--- /dev/null
+++ b/include/linux/binfmts.h
@@ -0,0 +1,87 @@
+#ifndef _LINUX_BINFMTS_H
+#define _LINUX_BINFMTS_H
+
+#include <linux/capability.h>
+
+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!
+ */
+#define MAX_ARG_PAGES 32
+
+/* sizeof(linux_binprm->buf) */
+#define BINPRM_BUF_SIZE 128
+
+#ifdef __KERNEL__
+
+/*
+ * This structure is used to hold the arguments that are used when loading binaries.
+ */
+struct linux_binprm{
+ char buf[BINPRM_BUF_SIZE];
+ struct page *page[MAX_ARG_PAGES];
+ 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;
+ void *security;
+ int argc, envc;
+ char * filename; /* Name of binary as seen by procps */
+ char * interp; /* Name of the binary really executed. Most
+ of the time same as filename, but could be
+ different for binfmt_{misc,script} */
+ unsigned interp_flags;
+ unsigned interp_data;
+ unsigned long loader, exec;
+};
+
+#define BINPRM_FLAGS_ENFORCE_NONDUMP_BIT 0
+#define BINPRM_FLAGS_ENFORCE_NONDUMP (1 << BINPRM_FLAGS_ENFORCE_NONDUMP_BIT)
+
+/* fd of the binary should be passed to the interpreter */
+#define BINPRM_FLAGS_EXECFD_BIT 1
+#define BINPRM_FLAGS_EXECFD (1 << BINPRM_FLAGS_EXECFD_BIT)
+
+
+/*
+ * This structure defines the functions that are used to load the binary formats that
+ * linux accepts.
+ */
+struct linux_binfmt {
+ struct linux_binfmt * next;
+ 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);
+ unsigned long min_coredump; /* minimal dump size */
+};
+
+extern int register_binfmt(struct linux_binfmt *);
+extern int unregister_binfmt(struct linux_binfmt *);
+
+extern int prepare_binprm(struct linux_binprm *);
+extern void 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);
+
+/* Stack area protections */
+#define EXSTACK_DEFAULT 0 /* Whatever the arch defaults to */
+#define EXSTACK_DISABLE_X 1 /* Disable executable stacks */
+#define EXSTACK_ENABLE_X 2 /* Enable executable stacks */
+
+extern int setup_arg_pages(struct linux_binprm * bprm,
+ unsigned long stack_top,
+ int executable_stack);
+extern int copy_strings(int argc,char __user * __user * argv,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);
+
+#endif /* __KERNEL__ */
+#endif /* _LINUX_BINFMTS_H */