git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef _LINUX_BINFMTS_H |
| 2 | #define _LINUX_BINFMTS_H | |
| 3 | ||
| 4 | #include <linux/capability.h> | |
| 5 | ||
| 6 | struct pt_regs; | |
| 7 | ||
| 8 | /* | |
| 9 | * MAX_ARG_PAGES defines the number of pages allocated for arguments | |
| 10 | * and envelope for the new program. 32 should suffice, this gives | |
| 11 | * a maximum env+arg of 128kB w/4KB pages! | |
| 12 | */ | |
| 13 | #define MAX_ARG_PAGES 32 | |
| 14 | ||
| 15 | /* sizeof(linux_binprm->buf) */ | |
| 16 | #define BINPRM_BUF_SIZE 128 | |
| 17 | ||
| 18 | #ifdef __KERNEL__ | |
| 19 | ||
| 20 | /* | |
| 21 | * This structure is used to hold the arguments that are used when loading binaries. | |
| 22 | */ | |
| 23 | struct linux_binprm{ | |
| 24 | char buf[BINPRM_BUF_SIZE]; | |
| 25 | struct page *page[MAX_ARG_PAGES]; | |
| 26 | struct mm_struct *mm; | |
| 27 | unsigned long p; /* current top of mem */ | |
| 28 | int sh_bang; | |
| 29 | struct file * file; | |
| 30 | int e_uid, e_gid; | |
| 31 | kernel_cap_t cap_inheritable, cap_permitted, cap_effective; | |
| 32 | void *security; | |
| 33 | int argc, envc; | |
| 34 | char * filename; /* Name of binary as seen by procps */ | |
| 35 | char * interp; /* Name of the binary really executed. Most | |
| 36 | of the time same as filename, but could be | |
| 37 | different for binfmt_{misc,script} */ | |
| 38 | unsigned interp_flags; | |
| 39 | unsigned interp_data; | |
| 40 | unsigned long loader, exec; | |
| 41 | }; | |
| 42 | ||
| 43 | #define BINPRM_FLAGS_ENFORCE_NONDUMP_BIT 0 | |
| 44 | #define BINPRM_FLAGS_ENFORCE_NONDUMP (1 << BINPRM_FLAGS_ENFORCE_NONDUMP_BIT) | |
| 45 | ||
| 46 | /* fd of the binary should be passed to the interpreter */ | |
| 47 | #define BINPRM_FLAGS_EXECFD_BIT 1 | |
| 48 | #define BINPRM_FLAGS_EXECFD (1 << BINPRM_FLAGS_EXECFD_BIT) | |
| 49 | ||
| 50 | ||
| 51 | /* | |
| 52 | * This structure defines the functions that are used to load the binary formats that | |
| 53 | * linux accepts. | |
| 54 | */ | |
| 55 | struct linux_binfmt { | |
| 56 | struct linux_binfmt * next; | |
| 57 | struct module *module; | |
| 58 | int (*load_binary)(struct linux_binprm *, struct pt_regs * regs); | |
| 59 | int (*load_shlib)(struct file *); | |
| 60 | int (*core_dump)(long signr, struct pt_regs * regs, struct file * file); | |
| 61 | unsigned long min_coredump; /* minimal dump size */ | |
| 62 | }; | |
| 63 | ||
| 64 | extern int register_binfmt(struct linux_binfmt *); | |
| 65 | extern int unregister_binfmt(struct linux_binfmt *); | |
| 66 | ||
| 67 | extern int prepare_binprm(struct linux_binprm *); | |
| 68 | extern void remove_arg_zero(struct linux_binprm *); | |
| 69 | extern int search_binary_handler(struct linux_binprm *,struct pt_regs *); | |
| 70 | extern int flush_old_exec(struct linux_binprm * bprm); | |
| 71 | ||
| d6e71144 AC |
72 | extern int suid_dumpable; |
| 73 | #define SUID_DUMP_DISABLE 0 /* No setuid dumping */ | |
| 74 | #define SUID_DUMP_USER 1 /* Dump as user of process */ | |
| 75 | #define SUID_DUMP_ROOT 2 /* Dump as root */ | |
| 76 | ||
| 1da177e4 LT |
77 | /* Stack area protections */ |
| 78 | #define EXSTACK_DEFAULT 0 /* Whatever the arch defaults to */ | |
| 79 | #define EXSTACK_DISABLE_X 1 /* Disable executable stacks */ | |
| 80 | #define EXSTACK_ENABLE_X 2 /* Enable executable stacks */ | |
| 81 | ||
| 82 | extern int setup_arg_pages(struct linux_binprm * bprm, | |
| 83 | unsigned long stack_top, | |
| 84 | int executable_stack); | |
| 1da177e4 LT |
85 | extern int copy_strings_kernel(int argc,char ** argv,struct linux_binprm *bprm); |
| 86 | extern void compute_creds(struct linux_binprm *binprm); | |
| 87 | extern int do_coredump(long signr, int exit_code, struct pt_regs * regs); | |
| 88 | extern int set_binfmt(struct linux_binfmt *new); | |
| 89 | ||
| 90 | #endif /* __KERNEL__ */ | |
| 91 | #endif /* _LINUX_BINFMTS_H */ |