github.com/zxy12/golang_with_comment@v0.0.0-20190701084843-0e6b2aff5ef3/os/user/getgrouplist_darwin.go (about)

     1  // Copyright 2016 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package user
     6  
     7  /*
     8  #include <unistd.h>
     9  #include <sys/types.h>
    10  #include <stdlib.h>
    11  
    12  static int mygetgrouplist(const char* user, gid_t group, gid_t* groups, int* ngroups) {
    13  	int* buf = malloc(*ngroups * sizeof(int));
    14  	int rv = getgrouplist(user, (int) group, buf, ngroups);
    15  	int i;
    16  	if (rv == 0) {
    17  		for (i = 0; i < *ngroups; i++) {
    18  			groups[i] = (gid_t) buf[i];
    19  		}
    20  	}
    21  	free(buf);
    22  	return rv;
    23  }
    24  */
    25  import "C"
    26  
    27  func getGroupList(name *C.char, userGID C.gid_t, gids *C.gid_t, n *C.int) C.int {
    28  	return C.mygetgrouplist(name, userGID, gids, n)
    29  }