Finita la conversione dei listati in file separati. Passato anche alla nuova

[gapil.git] / listati / DirMonitor.c

diff --git a/listati/DirMonitor.c b/listati/DirMonitor.c
new file mode 100644 (file)
index 0000000..edd5bb9
--- /dev/null
+++ b/listati/DirMonitor.c
@@ -0,0 +1,49 @@
+/* global variables for shared memory segment */
+struct DirProp {
+    int tot_size;    
+    int tot_files;   
+    int tot_regular; 
+    int tot_fifo;    
+    int tot_link;    
+    int tot_dir;     
+    int tot_block;   
+    int tot_char;    
+    int tot_sock;
+} *shmptr;
+key_t key;
+int mutex;
+/* main body */
+int main(int argc, char *argv[]) 
+{
+    int i, pause = 10;
+    ...
+    if ((argc - optind) != 1) {          /* There must be remaing parameters */
+        printf("Wrong number of arguments %d\n", argc - optind);
+        usage();
+    }
+    if (chdir(argv[1])) {                      /* chdir to be sure dir exist */
+        perror("Cannot find directory to monitor");
+    }
+    Signal(SIGTERM, HandSIGTERM);            /* set handlers for termination */
+    Signal(SIGINT, HandSIGTERM);
+    Signal(SIGQUIT, HandSIGTERM);
+    key = ftok("~/gapil/sources/DirMonitor.c", 1);           /* define a key */
+    shmptr = ShmCreate(key, 4096, 0666, 0);   /* get a shared memory segment */
+    if (!shmptr) {
+        perror("Cannot create shared memory");
+        exit(1);
+    }
+    if ((mutex = MutexCreate(key)) == -1) {                   /* get a Mutex */
+        perror("Cannot create mutex");
+        exit(1);
+    }
+    /* main loop, monitor directory properties each 10 sec */
+    daemon(1, 0);              /* demonize process, staying in monitored dir */
+    while (1) {
+        MutexLock(mutex);                              /* lock shared memory */
+        memset(shmptr, 0, sizeof(struct DirProp));    /* erase previous data */
+        DirScan(argv[1], ComputeValues);                     /* execute scan */
+        MutexUnlock(mutex);                          /* unlock shared memory */
+        sleep(pause);                              /* sleep until next watch */
+    }
+}