_dyld_get_all_image_infos

• 定义
  • dyld3/APIs.h
    • const struct dyld_all_image_infos* _dyld_get_all_image_infos() TEMP_HIDDEN;
  • mach-o/dyld_priv.h

    // get pointer to this process's dyld_all_image_infos
    // Exists in Mac OS X 10.4 and later through _dyld_func_lookup()
    // Exists in Mac OS X 10.6 and later through libSystem.dylib
    //
    const struct dyld_all_image_infos* _dyld_get_all_image_infos() __attribute__((deprecated));
    

• 实现
  • dyldAPIs.cpp

    const struct dyld_all_image_infos* _dyld_get_all_image_infos()
    {
      return dyld::gProcessInfo;
    }
    

  • APIs.cpp

    const struct dyld_all_image_infos* _dyld_get_all_image_infos()
    {
        return gAllImages.oldAllImageInfo();
    }
    

相关

dyld_debug.c

// SPI into dyld to get address of _dyld_get_all_image_infos data structure
static const struct dyld_all_image_infos* dyld_get_all_image_infos()
{
    static const struct dyld_all_image_infos* (*p)() = NULL;

  if ( p == NULL )
      _dyld_func_lookup("__dyld_get_all_image_infos", (void**)&p);

  if ( p != NULL )
    return p();
  else
    return NULL;
}

用法举例

/* Example using struct dyld_all_image_infos */

#include <stdio.h>
#include <dlfcn.h>

#include <mach-o/dyld_images.h>
#include <mach-o/dyld.h>
#include <mach-o/dyld_priv.h>

int
main(void)
{
    int i;
    const struct dyld_all_image_infos *dyld_all_image_infos;

    dyld_all_image_infos = _dyld_get_all_image_infos();

    for(i=0;i<dyld_all_image_infos->infoArrayCount;i++) {
        printf("image: %s %d\n",
            dyld_all_image_infos->infoArray[i].imageFilePath,
            (int)dyld_all_image_infos->infoArray[i].imageFileModDate
        );
    }

    return 0;
}

涉及到地方

nm

$ nm /usr/lib/system/libdyld.dylib | grep __dyld_get_all_image_infos
0000000000003479 t __dyld_get_all_image_infos

libsubstrate.dylib

libsubstrate.dylib`___lldb_unnamed_symbol14$$libsubstrate.dylib:
    0x104449178 <+0>:   stp    x29, x30, [sp, #-0x10]!
...
    0x1044491bc <+68>:  b      0x104449270              ; <+248>
    0x1044491c0 <+72>:  bl     0x104458ab0              ; symbol stub for: _dyld_get_all_image_infos