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spiffs: Add vfs (f)truncate api support

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Unit test cases added to verify truncate.

Closes https://github.com/espressif/esp-idf/issues/2234
This commit is contained in:
Vamshi Gajjela
2022-03-18 15:19:18 +05:30
parent 6d13c8b3a6
commit 0e5c9702c6
3 changed files with 163 additions and 1 deletions
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120
components/spiffs/test/test_spiffs.c
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@@ -8,6 +8,7 @@
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <fcntl.h>
#include <sys/time.h>
#include <sys/unistd.h>
#include "unity.h"
@@ -165,6 +166,111 @@ void test_spiffs_rename(const char* filename_prefix)
TEST_ASSERT_EQUAL(0, fclose(fdst));
}
void test_spiffs_truncate(const char *filename)
{
int read = 0;
int truncated_len = 0;
const char input[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
char output[sizeof(input)];
test_spiffs_create_file_with_text(filename, input);
// Extending file beyond size is not supported
TEST_ASSERT_EQUAL(-1, truncate(filename, strlen(input) + 1));
TEST_ASSERT_EQUAL(-1, truncate(filename, -1));
// Truncating should succeed
const char truncated_1[] = "ABCDEFGHIJ";
truncated_len = strlen(truncated_1);
TEST_ASSERT_EQUAL(0, truncate(filename, truncated_len));
FILE* f = fopen(filename, "rb");
TEST_ASSERT_NOT_NULL(f);
memset(output, 0, sizeof(output));
read = fread(output, 1, sizeof(output), f);
TEST_ASSERT_EQUAL(truncated_len, read);
TEST_ASSERT_EQUAL_STRING_LEN(truncated_1, output, truncated_len);
TEST_ASSERT_EQUAL(0, fclose(f));
// Once truncated, the new file size should be the basis
// whether truncation should succeed or not
TEST_ASSERT_EQUAL(-1, truncate(filename, truncated_len + 1));
TEST_ASSERT_EQUAL(-1, truncate(filename, strlen(input)));
TEST_ASSERT_EQUAL(-1, truncate(filename, strlen(input) + 1));
TEST_ASSERT_EQUAL(-1, truncate(filename, -1));
// Truncating a truncated file should succeed
const char truncated_2[] = "ABCDE";
truncated_len = strlen(truncated_2);
TEST_ASSERT_EQUAL(0, truncate(filename, truncated_len));
f = fopen(filename, "rb");
TEST_ASSERT_NOT_NULL(f);
memset(output, 0, sizeof(output));
read = fread(output, 1, sizeof(output), f);
TEST_ASSERT_EQUAL(truncated_len, read);
TEST_ASSERT_EQUAL_STRING_LEN(truncated_2, output, truncated_len);
TEST_ASSERT_EQUAL(0, fclose(f));
}
void test_spiffs_ftruncate(const char *filename)
{
int truncated_len = 0;
const char input[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
char output[sizeof(input)];
int fd = open(filename, O_WRONLY | O_CREAT | O_TRUNC);
TEST_ASSERT_NOT_EQUAL(-1, fd);
TEST_ASSERT_EQUAL(strlen(input), write(fd, input, strlen(input)));
// Extending file beyond size is not supported
TEST_ASSERT_EQUAL(-1, ftruncate(fd, strlen(input) + 1));
TEST_ASSERT_EQUAL(-1, ftruncate(fd, -1));
// Truncating should succeed
const char truncated_1[] = "ABCDEFGHIJ";
truncated_len = strlen(truncated_1);
TEST_ASSERT_EQUAL(0, ftruncate(fd, truncated_len));
TEST_ASSERT_EQUAL(0, close(fd));
fd = open(filename, O_RDONLY);
TEST_ASSERT_NOT_EQUAL(-1, fd);
memset(output, 0, sizeof(output));
TEST_ASSERT_EQUAL(truncated_len, read(fd, output, sizeof(output)));
TEST_ASSERT_EQUAL_STRING_LEN(truncated_1, output, truncated_len);
TEST_ASSERT_EQUAL(0, close(fd));
// further truncate the file
fd = open(filename, O_WRONLY);
TEST_ASSERT_NOT_EQUAL(-1, fd);
// Once truncated, the new file size should be the basis
// whether truncation should succeed or not
TEST_ASSERT_EQUAL(-1, ftruncate(fd, truncated_len + 1));
TEST_ASSERT_EQUAL(-1, ftruncate(fd, strlen(input)));
TEST_ASSERT_EQUAL(-1, ftruncate(fd, strlen(input) + 1));
TEST_ASSERT_EQUAL(-1, ftruncate(fd, -1));
// Truncating a truncated file should succeed
const char truncated_2[] = "ABCDE";
truncated_len = strlen(truncated_2);
TEST_ASSERT_EQUAL(0, ftruncate(fd, truncated_len));
TEST_ASSERT_EQUAL(0, close(fd));
// open file for reading and validate the content
fd = open(filename, O_RDONLY);
TEST_ASSERT_NOT_EQUAL(-1, fd);
memset(output, 0, sizeof(output));
TEST_ASSERT_EQUAL(truncated_len, read(fd, output, sizeof(output)));
TEST_ASSERT_EQUAL_STRING_LEN(truncated_2, output, truncated_len);
TEST_ASSERT_EQUAL(0, close(fd));
}
void test_spiffs_can_opendir(const char* path)
{
char name_dir_file[64];
@@ -574,6 +680,20 @@ TEST_CASE("rename moves a file", "[spiffs]")
test_teardown();
}
TEST_CASE("truncate a file", "[spiffs]")
{
test_setup();
test_spiffs_truncate("/spiffs/truncate.txt");
test_teardown();
}
TEST_CASE("ftruncate a file", "[spiffs]")
{
test_setup();
test_spiffs_ftruncate("/spiffs/ftrunc.txt");
test_teardown();
}
TEST_CASE("can opendir root directory of FS", "[spiffs]")
{
test_setup();