Error out if the set blocksize is larger than the file size
[fio.git] / filesetup.c
index 4bfa470d0e285539e7de0d441c4d63aedd0eeb9c..79eea9f879fb42b1f21607e5fe4df1fe4d498cd5 100644 (file)
@@ -38,7 +38,7 @@ static int extend_file(struct thread_data *td, struct fio_file *f)
        int r, new_layout = 0, unlink_file = 0, flags;
        unsigned long long left;
        unsigned int bs;
-       char *b;
+       char *b = NULL;
 
        if (read_only) {
                log_err("fio: refusing extend of file due to read-only\n");
@@ -50,10 +50,11 @@ static int extend_file(struct thread_data *td, struct fio_file *f)
         * does that for operations involving reads, or for writes
         * where overwrite is set
         */
-       if (td_read(td) || (td_write(td) && td->o.overwrite) ||
+       if (td_read(td) ||
+          (td_write(td) && td->o.overwrite && !td->o.file_append) ||
            (td_write(td) && td->io_ops->flags & FIO_NOEXTEND))
                new_layout = 1;
-       if (td_write(td) && !td->o.overwrite)
+       if (td_write(td) && !td->o.overwrite && !td->o.file_append)
                unlink_file = 1;
 
        if (unlink_file || new_layout) {
@@ -188,12 +189,14 @@ done:
 err:
        close(f->fd);
        f->fd = -1;
+       if (b)
+               free(b);
        return 1;
 }
 
 static int pre_read_file(struct thread_data *td, struct fio_file *f)
 {
-       int r, did_open = 0, old_runstate;
+       int ret = 0, r, did_open = 0, old_runstate;
        unsigned long long left;
        unsigned int bs;
        char *b;
@@ -215,7 +218,13 @@ static int pre_read_file(struct thread_data *td, struct fio_file *f)
        b = malloc(bs);
        memset(b, 0, bs);
 
-       lseek(f->fd, f->file_offset, SEEK_SET);
+       if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) {
+               td_verror(td, errno, "lseek");
+               log_err("fio: failed to lseek pre-read file\n");
+               ret = 1;
+               goto error;
+       }
+
        left = f->io_size;
 
        while (left && !td->terminate) {
@@ -233,12 +242,14 @@ static int pre_read_file(struct thread_data *td, struct fio_file *f)
                }
        }
 
+error:
        td_restore_runstate(td, old_runstate);
 
        if (did_open)
                td->io_ops->close_file(td, f);
+
        free(b);
-       return 0;
+       return ret;
 }
 
 static unsigned long long get_rand_file_size(struct thread_data *td)
@@ -386,9 +397,6 @@ static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
        dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off,
                                                                len);
 
-       /*
-        * FIXME: add blockdev flushing too
-        */
        if (f->mmap_ptr) {
                ret = posix_madvise(f->mmap_ptr, f->mmap_sz, POSIX_MADV_DONTNEED);
 #ifdef FIO_MADV_FREE
@@ -410,15 +418,18 @@ static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f,
        } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE)
                ret = 0;
 
-       if (ret < 0) {
-               td_verror(td, errno, "invalidate_cache");
-               return 1;
-       } else if (ret > 0) {
-               td_verror(td, ret, "invalidate_cache");
-               return 1;
+       /*
+        * Cache flushing isn't a fatal condition, and we know it will
+        * happen on some platforms where we don't have the proper
+        * function to flush eg block device caches. So just warn and
+        * continue on our way.
+        */
+       if (ret) {
+               log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errno));
+               ret = 0;
        }
 
-       return ret;
+       return 0;
 
 }
 
@@ -677,7 +688,8 @@ static unsigned long long get_fs_free_counts(struct thread_data *td)
                } else if (f->filetype != FIO_TYPE_FILE)
                        continue;
 
-               strcpy(buf, f->file_name);
+               buf[255] = '\0';
+               strncpy(buf, f->file_name, 255);
 
                if (stat(buf, &sb) < 0) {
                        if (errno != ENOENT)
@@ -699,8 +711,8 @@ static unsigned long long get_fs_free_counts(struct thread_data *td)
                if (fm)
                        continue;
 
-               fm = malloc(sizeof(*fm));
-               strcpy(fm->__base, buf);
+               fm = calloc(1, sizeof(*fm));
+               strncpy(fm->__base, buf, sizeof(fm->__base) - 1);
                fm->base = basename(fm->__base);
                fm->key = sb.st_dev;
                flist_add(&fm->list, &list);
@@ -722,8 +734,13 @@ static unsigned long long get_fs_free_counts(struct thread_data *td)
        return ret;
 }
 
-uint64_t get_start_offset(struct thread_data *td)
+uint64_t get_start_offset(struct thread_data *td, struct fio_file *f)
 {
+       struct thread_options *o = &td->o;
+
+       if (o->file_append && f->filetype == FIO_TYPE_FILE)
+               return f->real_file_size;
+
        return td->o.start_offset +
                (td->thread_number - 1) * td->o.offset_increment;
 }
@@ -792,7 +809,7 @@ int setup_files(struct thread_data *td)
         * Calculate per-file size and potential extra size for the
         * first files, if needed.
         */
-       if (!o->file_size_low) {
+       if (!o->file_size_low && o->nr_files) {
                uint64_t all_fs;
 
                fs = o->size / o->nr_files;
@@ -810,7 +827,7 @@ int setup_files(struct thread_data *td)
        extend_size = total_size = 0;
        need_extend = 0;
        for_each_file(td, f, i) {
-               f->file_offset = get_start_offset(td);
+               f->file_offset = get_start_offset(td, f);
 
                if (!o->file_size_low) {
                        /*
@@ -868,6 +885,11 @@ int setup_files(struct thread_data *td)
        if (!o->size || o->size > total_size)
                o->size = total_size;
 
+       if (o->size < td_min_bs(td)) {
+               log_err("fio: blocksize too large for data set\n");
+               goto err_out;
+       }
+
        /*
         * See if we need to extend some files
         */
@@ -898,7 +920,13 @@ int setup_files(struct thread_data *td)
 
                        err = __file_invalidate_cache(td, f, old_len,
                                                                extend_len);
-                       close(f->fd);
+
+                       /*
+                        * Shut up static checker
+                        */
+                       if (f->fd != -1)
+                               close(f->fd);
+
                        f->fd = -1;
                        if (err)
                                break;
@@ -1052,16 +1080,16 @@ void close_and_free_files(struct thread_data *td)
        dprint(FD_FILE, "close files\n");
 
        for_each_file(td, f, i) {
-               if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
-                       dprint(FD_FILE, "free unlink %s\n", f->file_name);
-                       unlink(f->file_name);
-               }
-
                if (fio_file_open(f))
                        td_io_close_file(td, f);
 
                remove_file_hash(f);
 
+               if (td->o.unlink && f->filetype == FIO_TYPE_FILE) {
+                       dprint(FD_FILE, "free unlink %s\n", f->file_name);
+                       unlink(f->file_name);
+               }
+
                sfree(f->file_name);
                f->file_name = NULL;
                axmap_free(f->io_axmap);
@@ -1103,45 +1131,89 @@ static void get_file_type(struct fio_file *f)
        }
 }
 
-static void set_already_allocated(const char *fname) {
-       struct file_name *fn;
+static int __is_already_allocated(const char *fname)
+{
+       struct flist_head *entry;
+       char *filename;
 
-       fn = malloc(sizeof(struct file_name));
-       fn->filename = strdup(fname);
-       flist_add_tail(&fn->list, &filename_list);
+       if (flist_empty(&filename_list))
+               return 0;
+
+       flist_for_each(entry, &filename_list) {
+               filename = flist_entry(entry, struct file_name, list)->filename;
+
+               if (strcmp(filename, fname) == 0)
+                       return 1;
+       }
+
+       return 0;
 }
 
 static int is_already_allocated(const char *fname)
 {
-       struct flist_head *entry;
-       char *filename;
+       int ret;
 
-       if (!flist_empty(&filename_list))
-       {
-               flist_for_each(entry, &filename_list) {
-                       filename = flist_entry(entry, struct file_name, list)->filename;
+       fio_file_hash_lock();
+       ret = __is_already_allocated(fname);
+       fio_file_hash_unlock();
+       return ret;
+}
 
-                       if (strcmp(filename, fname) == 0)
-                               return 1;
-               }
+static void set_already_allocated(const char *fname)
+{
+       struct file_name *fn;
+
+       fn = malloc(sizeof(struct file_name));
+       fn->filename = strdup(fname);
+
+       fio_file_hash_lock();
+       if (!__is_already_allocated(fname)) {
+               flist_add_tail(&fn->list, &filename_list);
+               fn = NULL;
        }
+       fio_file_hash_unlock();
 
-       return 0;
+       if (fn) {
+               free(fn->filename);
+               free(fn);
+       }
 }
 
-static void free_already_allocated() {
+
+static void free_already_allocated(void)
+{
        struct flist_head *entry, *tmp;
        struct file_name *fn;
 
-       if (!flist_empty(&filename_list))
-       {
-               flist_for_each_safe(entry, tmp, &filename_list) {
-                       fn = flist_entry(entry, struct file_name, list);
-                       free(fn->filename);
-                       flist_del(&fn->list);
-                       free(fn);
-               }
+       if (flist_empty(&filename_list))
+               return;
+
+       fio_file_hash_lock();
+       flist_for_each_safe(entry, tmp, &filename_list) {
+               fn = flist_entry(entry, struct file_name, list);
+               free(fn->filename);
+               flist_del(&fn->list);
+               free(fn);
        }
+
+       fio_file_hash_unlock();
+}
+
+static struct fio_file *alloc_new_file(struct thread_data *td)
+{
+       struct fio_file *f;
+
+       f = smalloc(sizeof(*f));
+       if (!f) {
+               log_err("fio: smalloc OOM\n");
+               assert(0);
+               return NULL;
+       }
+
+       f->fd = -1;
+       f->shadow_fd = -1;
+       fio_file_reset(td, f);
+       return f;
 }
 
 int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
@@ -1162,15 +1234,7 @@ int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
        if (numjob && is_already_allocated(file_name))
                return 0;
 
-       f = smalloc(sizeof(*f));
-       if (!f) {
-               log_err("fio: smalloc OOM\n");
-               assert(0);
-       }
-
-       f->fd = -1;
-       f->shadow_fd = -1;
-       fio_file_reset(td, f);
+       f = alloc_new_file(td);
 
        if (td->files_size <= td->files_index) {
                unsigned int new_size = td->o.nr_files + 1;
@@ -1229,13 +1293,6 @@ int add_file(struct thread_data *td, const char *fname, int numjob, int inc)
 
        set_already_allocated(file_name);
 
-       /*
-        * For adding files after the fact - if openfiles= isn't
-        * given as an option, ensure we allow at least one file open
-        */
-       if (!td->o.open_files)
-               td->o.open_files = 1;
-
        if (inc)
                td->o.nr_files++;
 
@@ -1280,8 +1337,11 @@ int put_file(struct thread_data *td, struct fio_file *f)
        if (--f->references)
                return 0;
 
-       if (should_fsync(td) && td->o.fsync_on_close)
+       if (should_fsync(td) && td->o.fsync_on_close) {
                f_ret = fsync(f->fd);
+               if (f_ret < 0)
+                       f_ret = errno;
+       }
 
        if (td->io_ops->close_file)
                ret = td->io_ops->close_file(td, f);
@@ -1359,7 +1419,8 @@ static int recurse_dir(struct thread_data *td, const char *dirname)
                if (lstat(full_path, &sb) == -1) {
                        if (errno != ENOENT) {
                                td_verror(td, errno, "stat");
-                               return 1;
+                               ret = 1;
+                               break;
                        }
                }
 
@@ -1407,13 +1468,7 @@ void dup_files(struct thread_data *td, struct thread_data *org)
        for_each_file(org, f, i) {
                struct fio_file *__f;
 
-               __f = smalloc(sizeof(*__f));
-               if (!__f) {
-                       log_err("fio: smalloc OOM\n");
-                       assert(0);
-               }
-               __f->fd = -1;
-               fio_file_reset(td, __f);
+               __f = alloc_new_file(td);
 
                if (f->file_name) {
                        __f->file_name = smalloc_strdup(f->file_name);
@@ -1482,6 +1537,7 @@ int fio_files_done(struct thread_data *td)
 }
 
 /* free memory used in initialization phase only */
-void filesetup_mem_free() {
+void filesetup_mem_free(void)
+{
        free_already_allocated();
 }