Cider Isn't Darwin Emulation, Really
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165#include "sysctl_unspec.h"#include <sys/errno.h>
enum { _OID_TO_NAME = 1, // TODO: implement 2 - for listing? _NAME_TO_OID = 3, _GET_DATA_TYPE = 4,};
extern char* strtok_r(char* str, const char* delim, char** saveptr);extern void* memcpy(void* dst, const void* src, __SIZE_TYPE__ len);extern char* strcpy(char* dst, const char* src);extern char* strcat(char* dst, const char* src);extern __SIZE_TYPE__ strlen(const char* str);extern int strcmp(const char* str1, const char* str2);
static sysctl_handler(handle_oid_to_name);static sysctl_handler(handle_name_to_oid);static sysctl_handler(handle_get_data_type);
const struct known_sysctl sysctls_unspec[] = { { .oid = _OID_TO_NAME, .type = CTLTYPE_STRING, .exttype = "S", .name = "oid_to_name", .handler = handle_oid_to_name }, { .oid = _NAME_TO_OID, .type = CTLTYPE_STRUCT, .exttype = "I,oid", .name = "name_to_oid", .handler = handle_name_to_oid }, { .oid = _GET_DATA_TYPE, .type = CTLTYPE_STRUCT, .exttype = "I,type", .name = "get_data_type", .handler = handle_get_data_type }, { .oid = -1 }};
sysctl_handler(handle_oid_to_name){ const int* oid = name + 2; const int oid_len = nlen - 2; char sname[64] = ""; int i; const struct known_sysctl* current = &sysctls_root;
for (i = 0; i < oid_len; i++) { int j; const struct known_sysctl* next = NULL;
for (j = 0; current->subctls[j].oid != -1; j++) { if (current->subctls[j].oid == oid[i]) { next = ¤t->subctls[j]; break; } }
if (!next) return -ENOENT;
if (sname[0]) strcat(sname, "."); strcat(sname, next->name);
if (next->type != CTLTYPE_NODE) break;
current = next; }
copyout_string(sname, old, oldlen); return 0;}
sysctl_handler(handle_name_to_oid){ const struct known_sysctl* current = &sysctls_root; int oid[4]; int oid_len = 0; char* saveptr; const char* token;
token = strtok_r((char*) _new, ".", &saveptr);
while (token != NULL) { const struct known_sysctl* next = NULL; int i;
if (current->type != CTLTYPE_NODE) return -ENOTDIR;
for (i = 0; current->subctls[i].oid != -1; i++) { if (strcmp(current->subctls[i].name, token) == 0) { next = ¤t->subctls[i]; break; } }
if (next == NULL) return -ENOENT;
oid[oid_len++] = next->oid; current = next; token = strtok_r(NULL, ".", &saveptr); }
if (old == NULL) { *oldlen = sizeof(int) * oid_len; } else { if (*oldlen < sizeof(int) * oid_len) return -EINVAL; *oldlen = sizeof(int) * oid_len; memcpy(old, oid, *oldlen); }
return 0;}
sysctl_handler(handle_get_data_type){ const int* oid = name + 2; const int oid_len = nlen - 2; int i; const struct known_sysctl* current = &sysctls_root;
for (i = 0; i < oid_len; i++) { int j; const struct known_sysctl* next = NULL;
if (current->type != CTLTYPE_NODE) return -ENOTDIR;
for (j = 0; current->subctls[j].oid != -1; j++) { if (current->subctls[j].oid == oid[i]) { next = ¤t->subctls[j]; break; } }
if (!next) return -ENOENT;
current = next; }
int typelen = sizeof(int) + strlen(current->exttype) + 1; if (old == NULL) { *oldlen = typelen; } else { if (*oldlen < typelen) return -EINVAL; *oldlen = typelen;
*((int*)old) = current->type; strcpy((char*) (((int*)old)+1), current->exttype); } return 0;}