4.3BSD - /usr/src/new/spms/src/lib/libspms/src/gethdir.c

   1: /* $Header$ */
   2: 
   3: /*
   4:  * Author: Peter J. Nicklin
   5:  */
   6: 
   7: /*
   8:  * gethdir() returns a pointer to a string containing the pathname of the
   9:  * root project directory belonging to username. If username is null or a
  10:  * zero length string, the root project directory belonging to the current
  11:  * user returned. A null pointer is returned on error.
  12:  */
  13: #include <stdio.h>
  14: #include <pwd.h>
  15: #include "null.h"
  16: #include "path.h"
  17: 
  18: char *
  19: gethdir(username)
  20:     char *username;         /* user's login name */
  21: {
  22:     char *getenv();         /* get environment variable */
  23:     char *hdir;         /* pointer to home directory pathname */
  24:     char *strcpy();         /* string copy */
  25:     struct passwd *getpwnam();  /* get password file entry by name */
  26:     struct passwd *getpwuid();  /* get password file entry by uid */
  27:     struct passwd *pw;      /* passwd struct pointer */
  28: 
  29:     if (username == NULL || *username == '\0')
  30:         {
  31:         if ((hdir = getenv("ROOTPROJECT")) != NULL)
  32:             return(hdir);
  33:         if ((hdir = getenv("HOME")) != NULL)
  34:             return(hdir);
  35:         pw = getpwuid(getuid());
  36:         }
  37:     else if ((pw = getpwnam(username)) == NULL)
  38:         {
  39:         warn("unknown user %s", username);
  40:         return(NULL);
  41:         }
  42:     return(pw->pw_dir);
  43: }

Defined functions