v4.19.13 snapshot.
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
new file mode 100644
index 0000000..c05f24f
--- /dev/null
+++ b/include/linux/binfmts.h
@@ -0,0 +1,155 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_BINFMTS_H
+#define _LINUX_BINFMTS_H
+
+#include <linux/sched.h>
+#include <linux/unistd.h>
+#include <asm/exec.h>
+#include <uapi/linux/binfmts.h>
+
+struct filename;
+
+#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;
+ unsigned long vma_pages;
+#else
+# define MAX_ARG_PAGES 32
+ struct page *page[MAX_ARG_PAGES];
+#endif
+ struct mm_struct *mm;
+ unsigned long p; /* current top of mem */
+ unsigned int
+ /*
+ * True after the bprm_set_creds hook has been called once
+ * (multiple calls can be made via prepare_binprm() for
+ * binfmt_script/misc).
+ */
+ called_set_creds:1,
+ /*
+ * True if most recent call to the commoncaps bprm_set_creds
+ * hook (due to multiple prepare_binprm() calls from the
+ * binfmt_script/misc handlers) resulted in elevated
+ * privileges.
+ */
+ cap_elevated:1,
+ /*
+ * Set by bprm_set_creds hook to indicate a privilege-gaining
+ * exec has happened. Used to sanitize execution environment
+ * and to set AT_SECURE auxv for glibc.
+ */
+ secureexec:1;
+#ifdef __alpha__
+ unsigned int taso:1;
+#endif
+ unsigned int recursion_depth; /* only for search_binary_handler() */
+ struct file * file;
+ 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;
+ const char * filename; /* Name of binary as seen by procps */
+ const 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;
+
+ struct rlimit rlim_stack; /* Saved RLIMIT_STACK used during exec. */
+} __randomize_layout;
+
+#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)
+
+/* filename of the binary will be inaccessible after exec */
+#define BINPRM_FLAGS_PATH_INACCESSIBLE_BIT 2
+#define BINPRM_FLAGS_PATH_INACCESSIBLE (1 << BINPRM_FLAGS_PATH_INACCESSIBLE_BIT)
+
+/* Function parameter for binfmt->coredump */
+struct coredump_params {
+ const siginfo_t *siginfo;
+ struct pt_regs *regs;
+ struct file *file;
+ unsigned long limit;
+ unsigned long mm_flags;
+ loff_t written;
+ loff_t pos;
+};
+
+/*
+ * This structure defines the functions that are used to load the binary formats that
+ * linux accepts.
+ */
+struct linux_binfmt {
+ struct list_head lh;
+ struct module *module;
+ int (*load_binary)(struct linux_binprm *);
+ int (*load_shlib)(struct file *);
+ int (*core_dump)(struct coredump_params *cprm);
+ unsigned long min_coredump; /* minimal dump size */
+} __randomize_layout;
+
+extern void __register_binfmt(struct linux_binfmt *fmt, int insert);
+
+/* Registration of default binfmt handlers */
+static inline void register_binfmt(struct linux_binfmt *fmt)
+{
+ __register_binfmt(fmt, 0);
+}
+/* Same as above, but adds a new binfmt at the top of the list */
+static inline void insert_binfmt(struct linux_binfmt *fmt)
+{
+ __register_binfmt(fmt, 1);
+}
+
+extern void unregister_binfmt(struct linux_binfmt *);
+
+extern int prepare_binprm(struct linux_binprm *);
+extern int __must_check remove_arg_zero(struct linux_binprm *);
+extern int search_binary_handler(struct linux_binprm *);
+extern int flush_old_exec(struct linux_binprm * bprm);
+extern void setup_new_exec(struct linux_binprm * bprm);
+extern void finalize_exec(struct linux_binprm *bprm);
+extern void would_dump(struct linux_binprm *, struct file *);
+
+extern int suid_dumpable;
+
+/* 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 transfer_args_to_stack(struct linux_binprm *bprm,
+ unsigned long *sp_location);
+extern int bprm_change_interp(const char *interp, struct linux_binprm *bprm);
+extern int copy_strings_kernel(int argc, const char *const *argv,
+ struct linux_binprm *bprm);
+extern int prepare_bprm_creds(struct linux_binprm *bprm);
+extern void install_exec_creds(struct linux_binprm *bprm);
+extern void set_binfmt(struct linux_binfmt *new);
+extern ssize_t read_code(struct file *, unsigned long, loff_t, size_t);
+
+extern int do_execve(struct filename *,
+ const char __user * const __user *,
+ const char __user * const __user *);
+extern int do_execveat(int, struct filename *,
+ const char __user * const __user *,
+ const char __user * const __user *,
+ int);
+int do_execve_file(struct file *file, void *__argv, void *__envp);
+
+#endif /* _LINUX_BINFMTS_H */