MonetDB: Jun2023 - small library to test errors on large file cr...

[Niels Nes]

Changeset: d20a042111ec for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB/rev/d20a042111ec
Added Files:
        testing/fallocate.c
Modified Files:
        sql/backends/monet5/sql.c
        testing/CMakeLists.txt
Branch: Jun2023
Log Message:

small library to test errors on large file creation using fallocate


diffs (68 lines):

diff --git a/sql/backends/monet5/sql.c b/sql/backends/monet5/sql.c
--- a/sql/backends/monet5/sql.c
+++ b/sql/backends/monet5/sql.c
@@ -1735,7 +1735,7 @@ mvc_append_column(sql_trans *t, sql_colu
        sqlstore *store = t->store;
        int res = store->storage_api.append_col(t, c, offset, pos, ins, 
BATcount(ins), TYPE_bat);
        if (res != LOG_OK) /* the conflict case should never happen, but leave 
it here */
-               throw(SQL, "sql.append", SQLSTATE(42000) "Append failed%s", res 
== LOG_CONFLICT ? " due to conflict with another transaction" : "");
+               throw(SQL, "sql.append", SQLSTATE(42000) "Append failed %s", 
res == LOG_CONFLICT ? "due to conflict with another transaction" : GDKerrbuf);
        return MAL_SUCCEED;
 }
 
@@ -1849,7 +1849,7 @@ mvc_append_wrap(Client cntxt, MalBlkPtr 
        bat_destroy(pos);
        bat_destroy(b);
        if (log_res != LOG_OK) /* the conflict case should never happen, but 
leave it here */
-               throw(SQL, "sql.append", SQLSTATE(42000) "Append failed%s", 
log_res == LOG_CONFLICT ? " due to conflict with another transaction" : "");
+               throw(SQL, "sql.append", SQLSTATE(42000) "Append failed %s", 
log_res == LOG_CONFLICT ? "due to conflict with another transaction" : 
GDKerrbuf);
        return MAL_SUCCEED;
 }
 
diff --git a/testing/CMakeLists.txt b/testing/CMakeLists.txt
--- a/testing/CMakeLists.txt
+++ b/testing/CMakeLists.txt
@@ -183,6 +183,12 @@ configure_file(sqllogictest.py
   ${CMAKE_CURRENT_BINARY_DIR}/sqllogictest.py
   COPYONLY)
 
+if (NOT WIN32)
+  add_library(mtest_fallocate SHARED)
+  target_sources(mtest_fallocate PRIVATE fallocate.c)
+  target_link_libraries(mtest_fallocate)
+endif()
+
 install(FILES
   ${CMAKE_CURRENT_BINARY_DIR}/mktest.py
   ${CMAKE_CURRENT_BINARY_DIR}/sqllogictest.py
diff --git a/testing/fallocate.c b/testing/fallocate.c
new file mode 100644
--- /dev/null
+++ b/testing/fallocate.c
@@ -0,0 +1,26 @@
+
+//#define _GNU_SOURCE             /* See feature_test_macros(7) */
+#include <fcntl.h>
+#include <dlfcn.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+
+typedef int (*fallocate_fptr)(int, int, off_t, off_t);
+fallocate_fptr real_fallocate = NULL;
+
+int
+fallocate(int fd, int mode, off_t offset, off_t len)
+{
+       if (!real_fallocate)
+               real_fallocate = (fallocate_fptr)dlsym(RTLD_NEXT, "fallocate");
+       if (!real_fallocate) {
+               fprintf(stderr, "mtest_allocate: could not resolve 'fallocate' 
in 'libc.so': %s\n", dlerror());
+               exit(1);
+       }
+       if (len >= (512*1024*1024)) {
+               errno = ENOSPC;
+               return -1;
+       }
+       return real_fallocate(fd, mode, offset, len);
+}
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