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9ccbc21166
Do defensive programming by using zfree() to initialize freed pointers to NULL, so that eventual use after free result in a NULL pointer deref instead of more subtle behaviour. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
343 lines
6.2 KiB
C
343 lines
6.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "debug.h"
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#include "tests.h"
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#include <api/io.h>
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#include <linux/kernel.h>
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#include <linux/zalloc.h>
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#define TEMPL "/tmp/perf-test-XXXXXX"
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#define EXPECT_EQUAL(val, expected) \
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do { \
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if (val != expected) { \
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pr_debug("%s:%d: %d != %d\n", \
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__FILE__, __LINE__, val, expected); \
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ret = -1; \
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} \
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} while (0)
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#define EXPECT_EQUAL64(val, expected) \
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do { \
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if (val != expected) { \
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pr_debug("%s:%d: %lld != %lld\n", \
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__FILE__, __LINE__, val, expected); \
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ret = -1; \
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} \
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} while (0)
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static int make_test_file(char path[PATH_MAX], const char *contents)
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{
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ssize_t contents_len = strlen(contents);
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int fd;
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strcpy(path, TEMPL);
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fd = mkstemp(path);
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if (fd < 0) {
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pr_debug("mkstemp failed");
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return -1;
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}
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if (write(fd, contents, contents_len) < contents_len) {
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pr_debug("short write");
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close(fd);
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unlink(path);
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return -1;
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}
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close(fd);
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return 0;
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}
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static int setup_test(char path[PATH_MAX], const char *contents,
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size_t buf_size, struct io *io)
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{
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if (make_test_file(path, contents))
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return -1;
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io->fd = open(path, O_RDONLY);
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if (io->fd < 0) {
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pr_debug("Failed to open '%s'\n", path);
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unlink(path);
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return -1;
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}
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io->buf = malloc(buf_size);
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if (io->buf == NULL) {
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pr_debug("Failed to allocate memory");
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close(io->fd);
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unlink(path);
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return -1;
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}
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io__init(io, io->fd, io->buf, buf_size);
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return 0;
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}
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static void cleanup_test(char path[PATH_MAX], struct io *io)
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{
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zfree(&io->buf);
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close(io->fd);
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unlink(path);
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}
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static int do_test_get_char(const char *test_string, size_t buf_size)
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{
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char path[PATH_MAX];
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struct io io;
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int ch, ret = 0;
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size_t i;
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if (setup_test(path, test_string, buf_size, &io))
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return -1;
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for (i = 0; i < strlen(test_string); i++) {
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ch = io__get_char(&io);
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EXPECT_EQUAL(ch, test_string[i]);
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EXPECT_EQUAL(io.eof, false);
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}
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ch = io__get_char(&io);
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EXPECT_EQUAL(ch, -1);
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EXPECT_EQUAL(io.eof, true);
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cleanup_test(path, &io);
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return ret;
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}
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static int test_get_char(void)
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{
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int i, ret = 0;
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size_t j;
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static const char *const test_strings[] = {
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"12345678abcdef90",
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"a\nb\nc\nd\n",
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"\a\b\t\v\f\r",
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};
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for (i = 0; i <= 10; i++) {
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for (j = 0; j < ARRAY_SIZE(test_strings); j++) {
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if (do_test_get_char(test_strings[j], 1 << i))
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ret = -1;
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}
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}
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return ret;
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}
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static int do_test_get_hex(const char *test_string,
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__u64 val1, int ch1,
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__u64 val2, int ch2,
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__u64 val3, int ch3,
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bool end_eof)
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{
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char path[PATH_MAX];
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struct io io;
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int ch, ret = 0;
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__u64 hex;
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if (setup_test(path, test_string, 4, &io))
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return -1;
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ch = io__get_hex(&io, &hex);
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EXPECT_EQUAL64(hex, val1);
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EXPECT_EQUAL(ch, ch1);
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ch = io__get_hex(&io, &hex);
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EXPECT_EQUAL64(hex, val2);
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EXPECT_EQUAL(ch, ch2);
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ch = io__get_hex(&io, &hex);
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EXPECT_EQUAL64(hex, val3);
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EXPECT_EQUAL(ch, ch3);
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EXPECT_EQUAL(io.eof, end_eof);
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cleanup_test(path, &io);
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return ret;
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}
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static int test_get_hex(void)
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{
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int ret = 0;
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if (do_test_get_hex("12345678abcdef90",
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0x12345678abcdef90, -1,
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0, -1,
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0, -1,
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true))
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ret = -1;
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if (do_test_get_hex("1\n2\n3\n",
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1, '\n',
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2, '\n',
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3, '\n',
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false))
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ret = -1;
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if (do_test_get_hex("12345678ABCDEF90;a;b",
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0x12345678abcdef90, ';',
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0xa, ';',
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0xb, -1,
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true))
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ret = -1;
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if (do_test_get_hex("0x1x2x",
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0, 'x',
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1, 'x',
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2, 'x',
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false))
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ret = -1;
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if (do_test_get_hex("x1x",
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0, -2,
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1, 'x',
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0, -1,
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true))
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ret = -1;
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if (do_test_get_hex("10000000000000000000000000000abcdefgh99i",
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0xabcdef, 'g',
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0, -2,
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0x99, 'i',
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false))
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ret = -1;
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return ret;
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}
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static int do_test_get_dec(const char *test_string,
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__u64 val1, int ch1,
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__u64 val2, int ch2,
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__u64 val3, int ch3,
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bool end_eof)
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{
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char path[PATH_MAX];
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struct io io;
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int ch, ret = 0;
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__u64 dec;
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if (setup_test(path, test_string, 4, &io))
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return -1;
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ch = io__get_dec(&io, &dec);
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EXPECT_EQUAL64(dec, val1);
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EXPECT_EQUAL(ch, ch1);
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ch = io__get_dec(&io, &dec);
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EXPECT_EQUAL64(dec, val2);
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EXPECT_EQUAL(ch, ch2);
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ch = io__get_dec(&io, &dec);
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EXPECT_EQUAL64(dec, val3);
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EXPECT_EQUAL(ch, ch3);
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EXPECT_EQUAL(io.eof, end_eof);
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cleanup_test(path, &io);
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return ret;
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}
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static int test_get_dec(void)
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{
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int ret = 0;
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if (do_test_get_dec("12345678abcdef90",
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12345678, 'a',
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0, -2,
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0, -2,
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false))
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ret = -1;
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if (do_test_get_dec("1\n2\n3\n",
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1, '\n',
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2, '\n',
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3, '\n',
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false))
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ret = -1;
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if (do_test_get_dec("12345678;1;2",
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12345678, ';',
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1, ';',
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2, -1,
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true))
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ret = -1;
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if (do_test_get_dec("0x1x2x",
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0, 'x',
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1, 'x',
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2, 'x',
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false))
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ret = -1;
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if (do_test_get_dec("x1x",
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0, -2,
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1, 'x',
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0, -1,
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true))
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ret = -1;
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if (do_test_get_dec("10000000000000000000000000000000000000000000000000000000000123456789ab99c",
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123456789, 'a',
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0, -2,
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99, 'c',
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false))
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ret = -1;
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return ret;
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}
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static int test_get_line(void)
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{
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char path[PATH_MAX];
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struct io io;
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char test_string[1024];
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char *line = NULL;
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size_t i, line_len = 0;
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size_t buf_size = 128;
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int ret = 0;
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for (i = 0; i < 512; i++)
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test_string[i] = 'a';
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test_string[512] = '\n';
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for (i = 513; i < 1023; i++)
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test_string[i] = 'b';
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test_string[1023] = '\0';
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if (setup_test(path, test_string, buf_size, &io))
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return -1;
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EXPECT_EQUAL((int)io__getline(&io, &line, &line_len), 513);
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EXPECT_EQUAL((int)strlen(line), 513);
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for (i = 0; i < 512; i++)
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EXPECT_EQUAL(line[i], 'a');
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EXPECT_EQUAL(line[512], '\n');
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EXPECT_EQUAL((int)io__getline(&io, &line, &line_len), 510);
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for (i = 0; i < 510; i++)
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EXPECT_EQUAL(line[i], 'b');
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free(line);
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cleanup_test(path, &io);
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return ret;
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}
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static int test__api_io(struct test_suite *test __maybe_unused,
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int subtest __maybe_unused)
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{
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int ret = 0;
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if (test_get_char())
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ret = TEST_FAIL;
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if (test_get_hex())
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ret = TEST_FAIL;
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if (test_get_dec())
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ret = TEST_FAIL;
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if (test_get_line())
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ret = TEST_FAIL;
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return ret;
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}
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DEFINE_SUITE("Test api io", api_io);
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