putgrent.c raw

   1  #define _GNU_SOURCE
   2  #include <grp.h>
   3  #include <stdio.h>
   4  
   5  int putgrent(const struct group *gr, FILE *f)
   6  {
   7  	int r;
   8  	size_t i;
   9  	flockfile(f);
  10  	if ((r = fprintf(f, "%s:%s:%u:", gr->gr_name, gr->gr_passwd, gr->gr_gid))<0) goto done;
  11  	if (gr->gr_mem) for (i=0; gr->gr_mem[i]; i++)
  12  		if ((r = fprintf(f, "%s%s", i?",":"", gr->gr_mem[i]))<0) goto done;
  13  	r = fputc('\n', f);
  14  done:
  15  	funlockfile(f);
  16  	return r<0 ? -1 : 0;
  17  }
  18