ChangeLog, random_exercise.c:

  random_exercise.c: Also do some random truncating as well.

diff --git a/tests/progs/ChangeLog b/tests/progs/ChangeLog
index 92a31f4..1247592 100644 (file)
--- a/tests/progs/ChangeLog
+++ b/tests/progs/ChangeLog
@@ -1,3 +1,7 @@
+2001-05-10  Theodore Tso  <tytso@valinux.com>
+
+       * random_exercise.c: Also do some random truncating as well.
+
 2001-01-11    <tytso@snap.thunk.org>
 
        * test_icount.c, test_rel.c: Change ino_t to ext2_ino_t

diff --git a/tests/progs/random_exercise.c b/tests/progs/random_exercise.c
index e9e86bc..8f6fb2d 100644 (file)
--- a/tests/progs/random_exercise.c
+++ b/tests/progs/random_exercise.c
@@ -33,7 +33,9 @@ struct state {
 
 struct state state_array[MAXFDS];
 
-char data_buffer[4096];
+#define DATA_SIZE 65536
+
+char data_buffer[DATA_SIZE];
 
 void clear_state_array()
 {
@@ -54,11 +56,24 @@ int get_random_fd()
        }
 }
 
+unsigned int get_inode_num(int fd)
+{
+       struct stat st;
+
+       if (fstat(fd, &st) < 0) {
+               perror("fstat");
+               return 0;
+       }
+       return st.st_ino;
+}
+
+
 void create_random_file()
 {
        char template[16] = "EX.XXXXXX";
        int     fd;
        int     isdir = 0;
+       int     size;
        
        mktemp(template);
        isdir = random() & 1;
@@ -66,24 +81,44 @@ void create_random_file()
                if (mkdir(template, 0700) < 0)
                        return;
                fd = open(template, O_RDONLY, 0600);
+               printf("Created temp directory %s, fd = %d\n",
+                      template, fd);
        } else {
+               size = random() & (DATA_SIZE-1);                
                fd = open(template, O_CREAT|O_RDWR, 0600);
-               write(fd, data_buffer, sizeof(data_buffer));
+               write(fd, data_buffer, size);
+               printf("Created temp file %s, fd = %d, size=%d\n",
+                      template, fd, size);
        }
+       state_array[fd].isdir = isdir;
        if (fd < 0)
                return;
-       printf("Created temp %s %s, fd = %d\n",
-              isdir ? "directory" : "file", template, fd);
        state_array[fd].isdir = isdir;
        state_array[fd].state = STATE_CREATED;
        strcpy(state_array[fd].name, template);
 }
 
+void truncate_file(int fd)
+{
+       int     size;
+
+       size = random() & (DATA_SIZE-1);
+
+       if (state_array[fd].isdir)
+               return;
+
+       ftruncate(fd, size);
+       printf("Truncating temp file %s, fd = %d, ino=%u, size=%d\n",
+              state_array[fd].name, fd, get_inode_num(fd), size);
+}
+
+
 void unlink_file(int fd)
 {
        char *filename = state_array[fd].name;
        
-       printf("Deleting %s, fd = %d\n", filename, fd);
+       printf("Deleting %s, fd = %d, ino = %u\n", filename, fd,
+              get_inode_num(fd));
 
        if (state_array[fd].isdir)
                rmdir(filename);
@@ -96,7 +131,8 @@ void close_file(int fd)
 {
        char *filename = state_array[fd].name;
        
-       printf("Closing %s, fd = %d\n", filename, fd);
+       printf("Closing %s, fd = %d, ino = %u\n", filename, fd,
+              get_inode_num(fd));
        
        close(fd);
        state_array[fd].state = STATE_CLEAR;
@@ -118,7 +154,11 @@ main(int argc, char **argv)
                        create_random_file();
                        break;
                case STATE_CREATED:
-                       unlink_file(fd);
+                       if ((state_array[fd].isdir == 0) &&
+                           (random() & 2))
+                               truncate_file(fd);
+                       else
+                               unlink_file(fd);
                        break;
                case STATE_DELETED:
                        close_file(fd);