C / UNIX Interface

Duration:   5 days

Participants:   Experienced C Language Applications Programmers, and Systems Programmers.

Objectives:   Upon successful completion of this course you will be able to: -  Make effective use of the C Language preprocessor. -  Use standard C Language library functions to perform operations related to error handling. -  Use UNIX system calls to perform operations related to file input and output. -  Use standard C Language library functions to perform operations related to file input and output, and to manipulate character strings. -  Use UNIX system calls to perform operations related to process creation, execution, and access. -  Use standard C Language library functions to perform operations related to process creation, execution, and access. -  Use UNIX system calls to perform interprocess communications via pipes.

Overview:   This course provides experienced C Language programmers with the ability to better utilize the C Programming Language in conjunction with the system calls and standard library functions of the UNIX operating system. You are prepared to fully utilize the UNIX system calls and standard library functions to deal with processes and perform operations related to input and output.

Prerequisites:   At lease six (6) months of C Language programming experience. Some knowledge of the UNIX system tables related to processes and to the file system is helpful.

Format:   Lecture and discussion with lab sessions.

Topic Outline:   -  C Language Preprocessor         Preprocessor Relationship to Compiler         Directive Syntax         Macro Substitution              Token Replacement              Macro Expansion         Include Files         Conditional Compilation         Typedefs -  System Calls and Error Handling         System Calls vs. Library Routines         Error Codes         Error Variables         System Error Messages (perror)         Obtaining Core Dumps (abort) -  I/O System Calls         UNIX File Types         File Definition              System File Information (inode)              File Permission Information              File Descriptors         File I/O              Opening and Closing Files (open, close)              Reading and Writing Data (read, write)              Creating New Files (creat)              Positioning within Files (lseek)              Linking and Removing Files (link, unlink)         Processing Directories              Directory Structure              Directory Processing Routines         Affecting File Control Information              Querying (stat, access)              Default permissions (umask)              Changing permissions (chmod)              Setting Times (utime)              Modifying Status (chown)              Changing Directory (chdir) -  Standard Library         File Access              freopen              fseek              ftell              fileno              fdopen              fflush         Process Communication              popen              pclose         File Status              feof              ferror              clearerr         Character Classification              isalpha              islower              isupper              isdigit              isspace         Character Translation              toupper              tolower         String Comparison              strcmp              strncmp         String Handling              strlen              strcpy              strncpy         String Manipulation              strchr              strrchr              strcat              strncat              strtok -  Process System Calls         Creating a New Process (fork)         Executing a New Process              exec Variations              Inherited Attributes After exec         Process Termination (exit, wait)         Suspending Process Execution (sleep)         Controlling Process Information              setpgrp              getpid              getppid              getpgrp         Signaling a Process              Sending a Signal (kill)              Acting on a Signal (signal)                 Ignoring Signals                 Defaulting Signals                 Catching Signals -  Process Library         Process Environment              What is Process Environment              Parts of Process Environment              Obtaining Environment Information         Password Information              What is Password File              Obtaining Password File Information         Obtaining Time & Date Information              time              ctime         Processing Command Line Options (getopt)         Dynamic Storage Allocation              malloc              realloc              free -  Pipes         UNIX Internal File Tables              Table Descriptions                 System File Table                 System Inode Table              Unrelated Processes              Related Processes         Interprocess Communication              System Calls                 pipe                 dup                 fcntl              Self Communication              Parent to Child Communication              Child to Parent Communication         End of Course Case Study

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