1c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifndef _LINUX_BINFMTS_H 2c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define _LINUX_BINFMTS_H 3c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 4c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#include <linux/capability.h> 5c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 6c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct pt_regs; 7c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 8c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 9c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * MAX_ARG_PAGES defines the number of pages allocated for arguments 10c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * and envelope for the new program. 32 should suffice, this gives 11c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * a maximum env+arg of 128kB w/4KB pages! 12c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 13c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define MAX_ARG_PAGES 32 14c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 15c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* sizeof(linux_binprm->buf) */ 16c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define BINPRM_BUF_SIZE 128 17c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 18c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#ifdef __KERNEL__ 19c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 20c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 21c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * This structure is used to hold the arguments that are used when loading binaries. 22c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 23c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct linux_binprm{ 24c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru char buf[BINPRM_BUF_SIZE]; 25c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct page *page[MAX_ARG_PAGES]; 26c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct mm_struct *mm; 27c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long p; /* current top of mem */ 28c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int sh_bang; 29c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct file * file; 30c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int e_uid, e_gid; 31c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru kernel_cap_t cap_inheritable, cap_permitted, cap_effective; 32c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru void *security; 33c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int argc, envc; 34c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru char * filename; /* Name of binary as seen by procps */ 35c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru char * interp; /* Name of the binary really executed. Most 36c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru of the time same as filename, but could be 37c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru different for binfmt_{misc,script} */ 38c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned interp_flags; 39c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned interp_data; 40c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long loader, exec; 41c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 42c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 43c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define BINPRM_FLAGS_ENFORCE_NONDUMP_BIT 0 44c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define BINPRM_FLAGS_ENFORCE_NONDUMP (1 << BINPRM_FLAGS_ENFORCE_NONDUMP_BIT) 45c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 46c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* fd of the binary should be passed to the interpreter */ 47c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define BINPRM_FLAGS_EXECFD_BIT 1 48c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define BINPRM_FLAGS_EXECFD (1 << BINPRM_FLAGS_EXECFD_BIT) 49c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 50c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 51c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* 52c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * This structure defines the functions that are used to load the binary formats that 53c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru * linux accepts. 54c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru */ 55c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Querustruct linux_binfmt { 56c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct linux_binfmt * next; 57c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru struct module *module; 58c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*load_binary)(struct linux_binprm *, struct pt_regs * regs); 59c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*load_shlib)(struct file *); 60c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int (*core_dump)(long signr, struct pt_regs * regs, struct file * file); 61c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long min_coredump; /* minimal dump size */ 62c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru}; 63c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 64c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int register_binfmt(struct linux_binfmt *); 65c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int unregister_binfmt(struct linux_binfmt *); 66c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 67c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int prepare_binprm(struct linux_binprm *); 68c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern void remove_arg_zero(struct linux_binprm *); 69c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int search_binary_handler(struct linux_binprm *,struct pt_regs *); 70c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int flush_old_exec(struct linux_binprm * bprm); 71c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 72c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int suid_dumpable; 73c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define SUID_DUMP_DISABLE 0 /* No setuid dumping */ 74c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define SUID_DUMP_USER 1 /* Dump as user of process */ 75c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define SUID_DUMP_ROOT 2 /* Dump as root */ 76c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 77c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru/* Stack area protections */ 78c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define EXSTACK_DEFAULT 0 /* Whatever the arch defaults to */ 79c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define EXSTACK_DISABLE_X 1 /* Disable executable stacks */ 80c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#define EXSTACK_ENABLE_X 2 /* Enable executable stacks */ 81c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 82c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int setup_arg_pages(struct linux_binprm * bprm, 83c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru unsigned long stack_top, 84c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru int executable_stack); 85c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int copy_strings_kernel(int argc,char ** argv,struct linux_binprm *bprm); 86c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern void compute_creds(struct linux_binprm *binprm); 87c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int do_coredump(long signr, int exit_code, struct pt_regs * regs); 88c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queruextern int set_binfmt(struct linux_binfmt *new); 89c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru 90c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif /* __KERNEL__ */ 91c559cd81139f97cecad1ad91a0b2e25a5936d53Jean-Baptiste Queru#endif /* _LINUX_BINFMTS_H */ 92