LCOM1920-T02G10

#ifndef _LIBEXEC_H_

#define _LIBEXEC_H_ 1

#include <sys/exec_elf.h>

struct exec_info;

typedef int (*libexec_loadfunc_t)(struct exec_info *execi,

        off_t offset, vir_bytes vaddr, size_t len);

typedef int (*libexec_clearfunc_t)(struct exec_info *execi,

        vir_bytes vaddr, size_t len);

typedef int (*libexec_allocfunc_t)(struct exec_info *execi,

        vir_bytes vaddr, size_t len);

typedef int (*libexec_procclearfunc_t)(struct exec_info *execi);

typedef int (*libexec_mmap_t)(struct exec_info *execi,

        vir_bytes vaddr, vir_bytes len, vir_bytes foffset, u16_t clearend,

        int protflags);

struct exec_info {

    /* Filled in by libexec caller */

    endpoint_t  proc_e;                 /* Process endpoint */

    char *hdr;                          /* Header or full image */

    size_t hdr_len;                     /* Size of hdr */

    vir_bytes frame_len;                /* Stack size */

    char progname[PROC_NAME_LEN];       /* Program name */

    uid_t new_uid;                      /* Process UID after exec */

    gid_t new_gid;                      /* Process GID after exec */

    int allow_setuid;                   /* Allow set{u,g}id execution? */

    vir_bytes stack_size;                /* Desired stack size */

    vir_bytes load_offset;                /* Desired load offset */

    vir_bytes text_size;                /* Text segment size */

    vir_bytes data_size;                /* Data segment size */

    off_t filesize;                        /* How big is the file */

    /* Callback pointers for use by libexec */

    libexec_loadfunc_t copymem;                /* Copy callback */

    libexec_clearfunc_t clearmem;        /* Clear callback */

    libexec_allocfunc_t allocmem_prealloc_cleared; /* Alloc callback */

    libexec_allocfunc_t allocmem_prealloc_junk; /* Alloc callback */

    libexec_allocfunc_t allocmem_ondemand; /* Alloc callback */

    libexec_procclearfunc_t clearproc;        /* Clear process callback */

    libexec_mmap_t memmap;                /* mmap callback */

    void *opaque;                        /* Callback data */

    /* Filled in by libexec load function */

    vir_bytes load_base;                /* Where executable is loaded */

    vir_bytes pc;                       /* Entry point of exec file */

    vir_bytes stack_high;                /* High stack addr */

};

int elf_has_interpreter(char *exec_hdr, size_t hdr_len, char *interp,

        size_t maxsz);

int elf_phdr(char *exec_hdr, size_t hdr_len, vir_bytes *phdr);

int libexec_pm_newexec(endpoint_t proc_e, struct exec_info *execi);

typedef int (*libexec_exec_loadfunc_t)(struct exec_info *execi);

int libexec_load_elf(struct exec_info *execi);

/* Default callbacks for kernel. */

int libexec_copy_memcpy(struct exec_info *execi, off_t offset, vir_bytes vaddr, size_t len);

int libexec_clear_memset(struct exec_info *execi, vir_bytes vaddr, size_t len);

/* Default callbacks. */

int libexec_alloc_mmap_prealloc_cleared(struct exec_info *execi, vir_bytes vaddr, size_t len);

int libexec_alloc_mmap_prealloc_junk(struct exec_info *execi, vir_bytes vaddr, size_t len);

int libexec_alloc_mmap_ondemand(struct exec_info *execi, vir_bytes vaddr, size_t len);

int libexec_clearproc_vm_procctl(struct exec_info *execi);

int libexec_clear_sys_memset(struct exec_info *execi, vir_bytes vaddr, size_t len);

#endif /* !_LIBEXEC_H_ */