getpw.c 1.3 KB

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  1. /*
  2. * getpw.c - This file is part of the libc-8086/pwd package for ELKS,
  3. * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>.
  4. *
  5. * This library is free software; you can redistribute it and/or
  6. * modify it under the terms of the GNU Library General Public
  7. * License as published by the Free Software Foundation; either
  8. * version 2 of the License, or (at your option) any later version.
  9. *
  10. * This library is distributed in the hope that it will be useful,
  11. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  13. * Library General Public License for more details.
  14. *
  15. * You should have received a copy of the GNU Library General Public
  16. * License along with this library; if not, write to the Free
  17. * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18. *
  19. */
  20. #include <sys/types.h>
  21. #include <errno.h>
  22. #include <stdio.h>
  23. #include <pwd.h>
  24. int getpw(uid_t uid, char *buf)
  25. {
  26. struct passwd *passwd;
  27. if (buf == NULL) {
  28. errno = EINVAL;
  29. return -1;
  30. }
  31. if ((passwd = getpwuid(uid)) == NULL)
  32. return -1;
  33. if (sprintf
  34. (buf, "%s:%s:%u:%u:%s:%s:%s", passwd->pw_name, passwd->pw_passwd,
  35. passwd->pw_gid, passwd->pw_uid, passwd->pw_gecos, passwd->pw_dir,
  36. passwd->pw_shell) < 0) {
  37. errno = ENOBUFS;
  38. return -1;
  39. }
  40. return 0;
  41. }