sample worker task

guestfs-inspectd.c

@@ -1,12 +1,79 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <czmq.h>
 #include <zactor.h>
 #include <guestfs.h>
 
-#define STREQ(a, b) (strcmp((a), (b)) == 0)
+static int compare_key_len(const void *p1, const void *p2) {
+        const char *key1 = *(char* const*) p1;
+        const char *key2 = *(char* const*) p2;
+        return strlen(key1) - strlen(key2);
+}
 
-void *worker_task;
+static int count_mountpoints(char *const *argv) {
+        size_t c;
+        for (c = 0; argv[c]; c++) {}
+        return c;
+}
+
+static void worker_task(char *disk_path, char *file_path) {
+        guestfs_h *g;
+        char **roots, **mountpoints;
+        char *root;
+        size_t i, j;
+
+        char *file_content;
+        size_t file_size;
+
+        g = guestfs_create();
+        if (g == NULL) {
+                exit(EXIT_FAILURE);
+        }
+
+        if (guestfs_add_drive_opts(g, disk_path,
+                                   GUESTFS_ADD_DRIVE_OPTS_READONLY, 1,
+                                   -1) == -1) {
+                exit(EXIT_FAILURE);
+        }
+
+        if (guestfs_launch(g) == -1) {
+                exit(EXIT_FAILURE);
+        }
+
+        roots = guestfs_inspect_os(g);
+
+        if (roots == NULL) {
+                exit(EXIT_FAILURE);
+        }
+
+        for (j = 0; roots[j] != NULL; j++) {
+                root = roots[j];
+                mountpoints = guestfs_inspect_get_mountpoints(g, root);
+                if (mountpoints == NULL) {
+                        exit(EXIT_FAILURE);
+                }
+                qsort(mountpoints, count_mountpoints(mountpoints) / 2, 2 * sizeof (char*), compare_key_len);
+                for (i = 0; mountpoints[i] != NULL; i += 2) {
+                        guestfs_mount_ro(g, mountpoints[i+1], mountpoints[i]);
+                        free(mountpoints[i]);
+                        free(mountpoints[i+1]);
+                }
+                free(mountpoints);
+
+                if (guestfs_is_file_opts(g, file_path, GUESTFS_IS_FILE_OPTS_FOLLOWSYMLINKS, 1, -1) > 0) {
+                        printf("--- %s ---\n", file_path);
+                        file_content = guestfs_read_file(g, file_path, &file_size);
+                        if (file_content == NULL) {
+                                exit(EXIT_FAILURE);
+                        }
+                        printf("%s\n", file_content);
+                        free(file_content);
+                }
+        }
+
+        return;
+}
 
 char *endpoint(void);
 
@@ -19,37 +86,14 @@ int main(int argc, char **argv) {
   const int worker_count = argc - 1;
 
   // One worker per disk image.
-  struct {
+  zactor_t *workers[worker_count];
-    char *name;
-    zactor_t *worker;
-  } worker_map[worker_count];
 
   for (int i = 0; i < worker_count; i++) {
     char *path = strtok(argv[i+1], ":");
-    worker_map[i].name = strtok(NULL, ":");
+    char *name = strtok(NULL, ":");
-    zactor_new(worker_map[i].worker, path);
+    workers[i] = zactor_new(worker_task, (void *) &((struct { char* path; char *name; }) {.path = path, .name = name}));
   }
 
-  char *ep = endpoint();
-  zsock_t *frontend = zsock_new_router(ep);
-  free(ep);
-
-  while (true) {
-    zmsg_t *msg = zmsg_recv(frontend);
-
-    if (!msg) break;
-
-    // Find the worker with the given name.
-    zactor_t *worker = NULL;
-    for (int i = 0; i < worker_count; i++) {
-      
-    }
-    if (worker) {
-      zmsg_send(&msg, zactor_sock(worker));
-    } else {
-      // The name specified does not exist.
-    }
-  }
   return EXIT_SUCCESS;
 }