Some observations I made while implementing this:

[rrdtool.git] / src / rrd_create.c

diff --git a/src/rrd_create.c b/src/rrd_create.c
index 9ee6896..ffc1892 100644 (file)
--- a/src/rrd_create.c
+++ b/src/rrd_create.c
@@ -671,36 +671,31 @@ int rrd_create_fn(
     rrd_t *rrd)
 {
     unsigned long i, ii;
-    int       rrd_file;
     rrd_value_t *unknown;
     int       unkn_cnt;
     rrd_file_t *rrd_file_dn;
     rrd_t     rrd_dn;
-    unsigned  flags = O_WRONLY | O_CREAT | O_TRUNC;
+    unsigned  rrd_flags = RRD_READWRITE | RRD_CREAT;
 
-#if defined(_WIN32) && !defined(__CYGWIN__) && !defined(__CYGWIN32__)
-    flags |= O_BINARY;
-#endif
-
-    if ((rrd_file = open(file_name, flags, 0666)) < 0) {
+    if ((rrd_file_dn = rrd_open(file_name, rrd, rrd_flags)) == NULL) {
         rrd_set_error("creating '%s': %s", file_name, rrd_strerror(errno));
         rrd_free2(rrd);
         return (-1);
     }
 
-    write(rrd_file, rrd->stat_head, sizeof(stat_head_t));
+    rrd_write(rrd_file_dn, rrd->stat_head, sizeof(stat_head_t));
 
-    write(rrd_file, rrd->ds_def, sizeof(ds_def_t) * rrd->stat_head->ds_cnt);
+    rrd_write(rrd_file_dn, rrd->ds_def, sizeof(ds_def_t) * rrd->stat_head->ds_cnt);
 
-    write(rrd_file, rrd->rra_def,
+    rrd_write(rrd_file_dn, rrd->rra_def,
           sizeof(rra_def_t) * rrd->stat_head->rra_cnt);
 
-    write(rrd_file, rrd->live_head, sizeof(live_head_t));
+    rrd_write(rrd_file_dn, rrd->live_head, sizeof(live_head_t));
 
     if ((rrd->pdp_prep = calloc(1, sizeof(pdp_prep_t))) == NULL) {
         rrd_set_error("allocating pdp_prep");
         rrd_free2(rrd);
-        close(rrd_file);
+        rrd_close(rrd_file_dn);
         return (-1);
     }
 
@@ -711,12 +706,12 @@ int rrd_create_fn(
         rrd->live_head->last_up % rrd->stat_head->pdp_step;
 
     for (i = 0; i < rrd->stat_head->ds_cnt; i++)
-        write(rrd_file, rrd->pdp_prep, sizeof(pdp_prep_t));
+        rrd_write(rrd_file_dn, rrd->pdp_prep, sizeof(pdp_prep_t));
 
     if ((rrd->cdp_prep = calloc(1, sizeof(cdp_prep_t))) == NULL) {
         rrd_set_error("allocating cdp_prep");
         rrd_free2(rrd);
-        close(rrd_file);
+        rrd_close(rrd_file_dn);
         return (-1);
     }
 
@@ -753,7 +748,7 @@ int rrd_create_fn(
         }
 
         for (ii = 0; ii < rrd->stat_head->ds_cnt; ii++) {
-            write(rrd_file, rrd->cdp_prep, sizeof(cdp_prep_t));
+            rrd_write(rrd_file_dn, rrd->cdp_prep, sizeof(cdp_prep_t));
         }
     }
 
@@ -763,7 +758,7 @@ int rrd_create_fn(
     if ((rrd->rra_ptr = calloc(1, sizeof(rra_ptr_t))) == NULL) {
         rrd_set_error("allocating rra_ptr");
         rrd_free2(rrd);
-        close(rrd_file);
+        rrd_close(rrd_file_dn);
         return (-1);
     }
 
@@ -773,14 +768,14 @@ int rrd_create_fn(
      * the pointer a priori. */
     for (i = 0; i < rrd->stat_head->rra_cnt; i++) {
         rrd->rra_ptr->cur_row = rra_random_row(&rrd->rra_def[i]);
-        write(rrd_file, rrd->rra_ptr, sizeof(rra_ptr_t));
+        rrd_write(rrd_file_dn, rrd->rra_ptr, sizeof(rra_ptr_t));
     }
 
     /* write the empty data area */
     if ((unknown = (rrd_value_t *) malloc(512 * sizeof(rrd_value_t))) == NULL) {
         rrd_set_error("allocating unknown");
         rrd_free2(rrd);
-        close(rrd_file);
+        rrd_close(rrd_file_dn);
         return (-1);
     }
     for (i = 0; i < 512; ++i)
@@ -791,22 +786,27 @@ int rrd_create_fn(
         unkn_cnt += rrd->stat_head->ds_cnt * rrd->rra_def[i].row_cnt;
 
     while (unkn_cnt > 0) {
-        write(rrd_file, unknown, sizeof(rrd_value_t) * min(unkn_cnt, 512));
+        if(rrd_write(rrd_file_dn, unknown, sizeof(rrd_value_t) * min(unkn_cnt, 512)) < 0)
+        {
+            rrd_set_error("creating rrd: %s", rrd_strerror(errno));
+            return -1;
+        }
 
         unkn_cnt -= 512;
     }
     free(unknown);
-    fdatasync(rrd_file);
     rrd_free2(rrd);
-    if (close(rrd_file) == -1) {
+    if (rrd_close(rrd_file_dn) == -1) {
         rrd_set_error("creating rrd: %s", rrd_strerror(errno));
         return -1;
     }
     /* flush all we don't need out of the cache */
-    rrd_file_dn = rrd_open(file_name, &rrd_dn, RRD_READONLY);
-    rrd_dontneed(rrd_file_dn, &rrd_dn);
-    rrd_free(&rrd_dn);
-    rrd_close(rrd_file_dn);
+    if((rrd_file_dn = rrd_open(file_name, &rrd_dn, RRD_READONLY)) != NULL)
+    {
+        rrd_dontneed(rrd_file_dn, &rrd_dn);
+        /* rrd_free(&rrd_dn); */
+        rrd_close(rrd_file_dn);
+    }
     return (0);
 }