CS360 Exam #1 Struct and Procedure definitions

Stat

   #include 
   #include 

   int stat(char *path, struct stat buf)

   struct stat {
        ino_t     st_ino;        /* the file serial number */
        mode_t    st_mode;       /* file mode */
        nlink_t   st_nlink;      /* number of hard links to the file */
        uid_t     st_uid;        /* user ID of owner */
        gid_t     st_gid;        /* group ID of owner */
        off_t     st_size;       /* total size of file, in bytes */
        time_t    st_atime;      /* file last access time */
        time_t    st_mtime;      /* file last modify time */
        time_t    st_ctime;      /* file last status change time */
   };

Opendir, etc

   DIR *opendir(char *dirname)
   struct dirent *readdir(DIR *dirp)
   int closedir(DIR *dirp) 

   struct  dirent {
           off_t           d_off;          /* offset of next disk dir entry */
           unsigned long   d_fileno;       /* file (inode) number of entry */
           unsigned short  d_reclen;       /* length of this record */
           unsigned short  d_namlen;       /* length of string in d_name */
           char            d_name[255+1];  /* name (up to MAXNAMLEN + 1) */
   };

Rb-trees

  Rb_node make_rb();   /* Creates a new rb-tree */
  Rb_node rb_insert(Rb_node tree, char *key, char *val);
  Rb_node rb_find_key_n(Rb_node root, char *key, int *found);

  #define rb_first(n) (n->c.list.flink)
  #define rb_next(n) (n->c.list.flink)
  #define rb_nil(t) (t)

  #define rb_traverse(ptr, lst) \
    for(ptr = rb_first(lst); ptr != rb_nil(lst); ptr = rb_next(ptr))

Fields

  #define MAXLEN 1001
  #define MAXFIELDS 1000
  
  typedef struct inputstruct {
    char *name;               /* File name */
    FILE *f;                  /* File descriptor */
    int line;                 /* Line number */
    char text1[MAXLEN];       /* The line */
    char text2[MAXLEN];       /* Working -- contains fields */
    int NF;                   /* Number of fields */
    char *fields[MAXFIELDS];  /* Pointers to fields */
    int file;                 /* 1 for file, 0 for popen */
  } *IS;
  
  extern IS new_inputstruct(/* FILENAME -- NULL for stdin */);
  extern int get_line(/* IS */); /* returns NF, or -1 on EOF.  Does not
                                    close the file */