*
* Author: S. Piccardi
*
- * $Id: SharedMem.c,v 1.4 2003/02/03 14:27:58 piccardi Exp $
- *
***************************************************************/
-#include <sys/shm.h> /* SysV IPC shared memory declarations */
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <stdio.h> /* standard I/O functions */
-#include <fcntl.h>
-#include <signal.h> /* signal handling declarations */
-#include <unistd.h>
+#include <sys/shm.h> /* SysV shared memory */
+#include <sys/types.h> /* primitive system data types */
+#include <sys/stat.h> /* file characteristics constants and functions */
+#include <stdio.h> /* standard I/O library */
+#include <fcntl.h> /* file control functions */
+#include <signal.h> /* signal constants, types and functions */
+#include <unistd.h> /* unix standard library */
#include <sys/mman.h>
-#include <string.h>
-#include <errno.h>
+#include <string.h> /* C strings library */
+#include <errno.h> /* error definitions and routines */
#include "macros.h"
/* *************************************************************************
* the fill value
* Return: the address of the shared memory segment (NULL on error)
*/
-void * ShmCreate(key_t ipc_key, int shm_size, int perm, char fill)
+void * ShmCreate(key_t ipc_key, int shm_size, int perm, int fill)
{
void * shm_ptr;
int shm_id; /* ID of the IPC shared memory segment */
}
/*
* Function ShmRemove:
- * Scheudle removal for a SysV shared memory segment
+ * Schedule removal for a SysV shared memory segment
* Input: an IPC key value
* the shared memory segment size
* Return: 0 on success, -1 on error
* the fill value
* Return: the address of the shared memory segment (NULL on error)
*/
-void * CreateShm(char * shm_name, off_t shm_size, mode_t perm, char fill)
+void * CreateShm(char * shm_name, off_t shm_size, mode_t perm, int fill)
{
void * shm_ptr;
int fd;
*/
int RemoveShm(char * shm_name)
{
- shm_unlink(shm_name);
- return 0;
+ return shm_unlink(shm_name);
}