alex/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2025-12-10 18:06:29 +00:00
Code Issues Packages Projects Releases Wiki Activity

vfs: restrict the fast seek for read-only files

Browse Source 
Since the files under fast-seek cannot be expanded with further writes, it does not
make sense to enable fast-seek which may fail in write-mode files
This commit is contained in:
Felipe Neves
2020-10-26 16:06:12 -03:00
parent 32e760adfb
commit 93ffc009ef
3 changed files with 49 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
components/fatfs/test/test_fatfs_common.c
View File

@@ -217,11 +217,27 @@ void test_fatfs_lseek(const char* filename)
TEST_ASSERT_EQUAL(18, ftell(f));
TEST_ASSERT_EQUAL(0, fseek(f, 0, SEEK_SET));
char buf[20];
TEST_ASSERT_EQUAL(18, fread(buf, 1, sizeof(buf), f));
const char ref_buf[] = "0123456789\n\0\0\0abc\n";
TEST_ASSERT_EQUAL_INT8_ARRAY(ref_buf, buf, sizeof(ref_buf) - 1);
TEST_ASSERT_EQUAL(0, fclose(f));
#ifdef CONFIG_FATFS_USE_FASTSEEK
f = fopen(filename, "rb+");
TEST_ASSERT_NOT_NULL(f);
TEST_ASSERT_EQUAL(0, fseek(f, 0, SEEK_END));
TEST_ASSERT_EQUAL(18, ftell(f));
TEST_ASSERT_EQUAL(0, fseek(f, -4, SEEK_CUR));
TEST_ASSERT_EQUAL(14, ftell(f));
TEST_ASSERT_EQUAL(0, fseek(f, -14, SEEK_CUR));
TEST_ASSERT_EQUAL(0, ftell(f));
TEST_ASSERT_EQUAL(18, fread(buf, 1, sizeof(buf), f));
TEST_ASSERT_EQUAL_INT8_ARRAY(ref_buf, buf, sizeof(ref_buf) - 1);
TEST_ASSERT_EQUAL(0, fclose(f));
#endif
}
void test_fatfs_truncate_file(const char* filename)