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Diffstat (limited to 'exec/priv.h')
| -rw-r--r-- | exec/priv.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/exec/priv.h b/exec/priv.h new file mode 100644 index 00000000..733f35c0 --- /dev/null +++ b/exec/priv.h @@ -0,0 +1,155 @@ +/* GNU Hurd standard exec server, private declarations. + Copyright (C) 1992,93,94,95,96,99,2000,02, 04 Free Software Foundation, Inc. + Written by Roland McGrath. + +This file is part of the GNU Hurd. + +The GNU Hurd is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +The GNU Hurd is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with the GNU Hurd; see the file COPYING. If not, write to +the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#include <assert.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/mman.h> +#include <hurd/trivfs.h> +#include <hurd/ports.h> +#include <hurd/lookup.h> +#include <pthread.h> + +#include <elf.h> +#include <link.h> /* This gives us the ElfW macro. */ +#include <fcntl.h> +#include "exec_S.h" + + +#ifndef exec_priv_h +#define exec_priv_h + +/* Information kept around to be given to a new task + in response to a message on the task's bootstrap port. */ +struct bootinfo + { + struct port_info pi; + vm_address_t stack_base; + vm_size_t stack_size; + int flags; + char *argv, *envp; + size_t argvlen, envplen, dtablesize, nports, nints; + mach_port_t *dtable, *portarray; + int *intarray; + vm_address_t phdr_addr, user_entry; + vm_size_t phdr_size; + }; +typedef struct bootinfo *bootinfo_t; + + +/* Where to put the service ports. */ +struct port_bucket *port_bucket; +struct port_class *execboot_portclass; + +extern mach_port_t procserver; /* Our proc port. */ + +typedef void asection; + +/* Data shared between check, check_section, + load, load_section, and finish. */ +struct execdata + { + /* Passed out to caller. */ + error_t error; + + /* Set by check. */ + vm_address_t entry; + file_t file; + + /* Set by load_section. */ + vm_address_t start_code; + vm_address_t end_code; + + /* Note that if `file_data' (below) is set, then these just point + into that and should not be deallocated (file_data is malloc'd). */ + char *map_buffer; /* Our mapping window or read buffer. */ + size_t map_vsize; /* Page-aligned size allocated there. */ + size_t map_fsize; /* Bytes from there to end of mapped data. */ + off_t map_filepos; /* Position `map_buffer' maps to. */ +#define map_buffer(e) ((e)->map_buffer) +#define map_fsize(e) ((e)->map_fsize) +#define map_vsize(e) ((e)->map_vsize) +#define map_filepos(e) ((e)->map_filepos) +#define map_set_fsize(e, fsize) ((e)->map_fsize = (fsize)) + + union /* Interpreter section giving name of file. */ + { + asection *section; + const ElfW(Phdr) *phdr; + } interp; + memory_object_t filemap, cntlmap; + struct shared_io *cntl; + char *file_data; /* File data if already copied in core. */ + off_t file_size; + size_t optimal_block; /* Optimal size for io_read from file. */ + + /* Set by caller of load. */ + task_t task; + + union + { + struct + { + /* Program header table read from the executable. + After `check' this is a pointer into the mapping window. + By `load' it is local alloca'd storage. */ + ElfW(Phdr) *phdr; + ElfW(Addr) phdr_addr; + ElfW(Word) phnum; /* Number of program header table elements. */ + int anywhere; /* Nonzero if image can go anywhere. */ + vm_address_t loadbase; /* Actual mapping location. */ + int execstack; /* Zero if stack can be nonexecutable. */ + } elf; + } info; + }; + +error_t elf_machine_matches_host (ElfW(Half) e_machine); + +void finish (struct execdata *, int dealloc_file_port); + +/* Make sure our mapping window (or read buffer) covers + LEN bytes of the file starting at POSN, and return + a pointer into the window corresponding to POSN. */ +void *map (struct execdata *e, off_t posn, size_t len); + + +void check_hashbang (struct execdata *e, + file_t file, + task_t oldtask, + int flags, + char *argv, u_int argvlen, boolean_t argv_copy, + char *envp, u_int envplen, boolean_t envp_copy, + mach_port_t *dtable, u_int dtablesize, + boolean_t dtable_copy, + mach_port_t *portarray, u_int nports, + boolean_t portarray_copy, + int *intarray, u_int nints, boolean_t intarray_copy, + mach_port_t *deallocnames, u_int ndeallocnames, + mach_port_t *destroynames, u_int ndestroynames); + + +/* Standard exec data for secure execs. */ +extern mach_port_t *std_ports; +extern int *std_ints; +extern size_t std_nports, std_nints; +extern pthread_rwlock_t std_lock; + +#endif /* exec_priv_h */ |