Completata revisione capitolo quattro

[gapil.git] / listati / mygetfacl.c

diff --git a/listati/mygetfacl.c b/listati/mygetfacl.c
new file mode 100644 (file)
index 0000000..0ba14cf
--- /dev/null
+++ b/listati/mygetfacl.c
@@ -0,0 +1,36 @@
+#include <sys/types.h>   /* primitive system data types */
+#include <stdlib.h>      /* C standard library */
+#include <stdio.h>       /* standard I/O library */
+#include <unistd.h>      /* unix standard library */
+#include <sys/acl.h>     /* acl library (use -l acl) */
+
+int main(int argc, char *argv[])
+{
+/*
+ * Variables definition
+ */    
+    acl_t acl;
+    ssize_t size;
+    char * buffer;
+    ...
+    /* must have an argument */
+    if ((argc - optind) != 1) {
+        printf("Wrong number of arguments %d\n", argc - optind);
+        usage();
+    }
+    /* main body */
+    acl = acl_get_file(argv[1], ACL_TYPE_ACCESS);
+    if (acl == NULL) {
+       perror("cannot get acl for file");
+       return 1;
+    }
+    buffer = acl_to_text(acl, &size);
+    if (buffer == NULL) {
+       perror("cannot convert acl");
+       return 1;
+    }
+    printf("ACL for file '%s':\n%s\n", argv[1], buffer);
+    acl_free(acl);
+    acl_free(buffer);
+    return 0;
+}