Cider Isn't Darwin Emulation, Really
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#include <limits.h>
#include <mach/boolean.h>#include <mach/error.h>#include <mach/mach_error.h>
#include "errorlib.h"#include "externs.h"
static void do_compat(mach_error_t *);
static voiddo_compat(mach_error_t *org_err){ mach_error_t err = *org_err;
/* * map old error numbers to * to new error sys & subsystem */
if ((-200 < err) && (err <= -100)) { err = -(err + 100) | IPC_SEND_MOD; } else if ((-300 < err) && (err <= -200)) { err = -(err + 200) | IPC_RCV_MOD; } else if ((-400 < err) && (err <= -300)) { err = -(err + 300) | MACH_IPC_MIG_MOD; } else if ((1000 <= err) && (err < 1100)) { err = (err - 1000) | SERV_NETNAME_MOD; } else if ((1600 <= err) && (err < 1700)) { err = (err - 1600) | SERV_ENV_MOD; } else if ((27600 <= err) && (err < 27700)) { err = (err - 27600) | SERV_EXECD_MOD; }
*org_err = err;}
static interr_sparse_mapit(int old, const struct error_sparse_map *map_table, int mapcnt){ boolean_t found = FALSE; int ret = 0, i;
for (i = 0; i < mapcnt; i++) { struct error_sparse_map entry = map_table[i];
if (entry.start <= old && old <= entry.end) { ret += old - entry.start; found = TRUE; break; } ret += entry.end - entry.start + 1; }
return (found)? ret : INT_MAX;}
char *mach_error_type(mach_error_t err){ const struct error_system *sys_p; int sub, system;
do_compat( &err );
system = err_get_system(err); sys_p = &_mach_errors[system]; sub = err_get_sub(err);
if (system <= err_max_system && sys_p->map_table) { sub = err_sparse_mapit(sub, sys_p->map_table, sys_p->map_count); }
if (system > err_max_system || sub >= sys_p->max_sub) { return (char *)"(?/?)"; } return (char *) (sys_p->subsystem[sub].subsys_name);}
boolean_t mach_error_full_diag = FALSE;
__private_extern__ char *mach_error_string_int(mach_error_t err, boolean_t *diag){ const struct error_system *sys_p; const struct error_subsystem *sub_p; int sub, system, code;
do_compat( &err );
system = err_get_system(err); sys_p = &_mach_errors[system]; sub = err_get_sub(err); code = err_get_code(err);
*diag = TRUE;
if (system > err_max_system) { return (char *)"(?/?) unknown error system"; } else if (sys_p->map_table) { sub = err_sparse_mapit(sub, sys_p->map_table, sys_p->map_count); }
if (sub >= sys_p->max_sub) { return (char *)sys_p->bad_sub; }
sub_p = &sys_p->subsystem[sub]; if (sub_p->map_table) { code = err_sparse_mapit(code, sub_p->map_table, sub_p->map_count); } if (code >= sub_p->max_code) { return (char *)NO_SUCH_ERROR; }
*diag = mach_error_full_diag; return (char *)sub_p->codes[code];}
char *mach_error_string(mach_error_t err){ boolean_t diag;
return mach_error_string_int( err, &diag );}
/* vim: set ts=4: */