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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
*/
#include "test.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
/* eal_filesystem.h is not a public header file, so use relative path */
#include "../../lib/librte_eal/common/eal_filesystem.h"
static int
test_parse_sysfs_value(void)
{
char filename[PATH_MAX] = "";
char proc_path[PATH_MAX];
char file_template[] = "/tmp/eal_test_XXXXXX";
int tmp_file_handle = -1;
FILE *fd = NULL;
unsigned valid_number;
unsigned long retval = 0;
#ifdef RTE_EXEC_ENV_BSDAPP
/* BSD doesn't have /proc/pid/fd */
return 0;
#endif
printf("Testing function eal_parse_sysfs_value()\n");
/* get a temporary filename to use for all tests - create temp file handle and then
* use /proc to get the actual file that we can open */
tmp_file_handle = mkstemp(file_template);
if (tmp_file_handle == -1) {
perror("mkstemp() failure");
goto error;
}
snprintf(proc_path, sizeof(proc_path), "/proc/self/fd/%d", tmp_file_handle);
if (readlink(proc_path, filename, sizeof(filename)) < 0) {
perror("readlink() failure");
goto error;
}
printf("Temporary file is: %s\n", filename);
/* test we get an error value if we use file before it's created */
printf("Test reading a missing file ...\n");
if (eal_parse_sysfs_value("/dev/not-quite-null", &retval) == 0) {
printf("Error with eal_parse_sysfs_value() - returned success on reading empty file\n");
goto error;
}
printf("Confirmed return error when reading empty file\n");
/* test reading a valid number value with "\n" on the end */
printf("Test reading valid values ...\n");
valid_number = 15;
fd = fopen(filename,"w");
if (fd == NULL) {
printf("line %d, Error opening %s: %s\n", __LINE__, filename, strerror(errno));
goto error;
}
fprintf(fd,"%u\n", valid_number);
fclose(fd);
fd = NULL;
if (eal_parse_sysfs_value(filename, &retval) < 0) {
printf("eal_parse_sysfs_value() returned error - test failed\n");
goto error;
}
if (retval != valid_number) {
printf("Invalid value read by eal_parse_sysfs_value() - test failed\n");
goto error;
}
printf("Read '%u\\n' ok\n", valid_number);
/* test reading a valid hex number value with "\n" on the end */
valid_number = 25;
fd = fopen(filename,"w");
if (fd == NULL) {
printf("line %d, Error opening %s: %s\n", __LINE__, filename, strerror(errno));
goto error;
}
fprintf(fd,"0x%x\n", valid_number);
fclose(fd);
fd = NULL;
if (eal_parse_sysfs_value(filename, &retval) < 0) {
printf("eal_parse_sysfs_value() returned error - test failed\n");
goto error;
}
if (retval != valid_number) {
printf("Invalid value read by eal_parse_sysfs_value() - test failed\n");
goto error;
}
printf("Read '0x%x\\n' ok\n", valid_number);
printf("Test reading invalid values ...\n");
/* test reading an empty file - expect failure!*/
fd = fopen(filename,"w");
if (fd == NULL) {
printf("line %d, Error opening %s: %s\n", __LINE__, filename, strerror(errno));
goto error;
}
fclose(fd);
fd = NULL;
if (eal_parse_sysfs_value(filename, &retval) == 0) {
printf("eal_parse_sysfs_value() read invalid value - test failed\n");
goto error;
}
/* test reading a valid number value *without* "\n" on the end - expect failure!*/
valid_number = 3;
fd = fopen(filename,"w");
if (fd == NULL) {
printf("line %d, Error opening %s: %s\n", __LINE__, filename, strerror(errno));
goto error;
}
fprintf(fd,"%u", valid_number);
fclose(fd);
fd = NULL;
if (eal_parse_sysfs_value(filename, &retval) == 0) {
printf("eal_parse_sysfs_value() read invalid value - test failed\n");
goto error;
}
/* test reading a valid number value followed by string - expect failure!*/
valid_number = 3;
fd = fopen(filename,"w");
if (fd == NULL) {
printf("line %d, Error opening %s: %s\n", __LINE__, filename, strerror(errno));
goto error;
}
fprintf(fd,"%uJ\n", valid_number);
fclose(fd);
fd = NULL;
if (eal_parse_sysfs_value(filename, &retval) == 0) {
printf("eal_parse_sysfs_value() read invalid value - test failed\n");
goto error;
}
/* test reading a non-numeric value - expect failure!*/
fd = fopen(filename,"w");
if (fd == NULL) {
printf("line %d, Error opening %s: %s\n", __LINE__, filename, strerror(errno));
goto error;
}
fprintf(fd,"error\n");
fclose(fd);
fd = NULL;
if (eal_parse_sysfs_value(filename, &retval) == 0) {
printf("eal_parse_sysfs_value() read invalid value - test failed\n");
goto error;
}
close(tmp_file_handle);
unlink(filename);
printf("eal_parse_sysfs_value() - OK\n");
return 0;
error:
if (fd)
fclose(fd);
if (tmp_file_handle > 0)
close(tmp_file_handle);
if (filename[0] != '\0')
unlink(filename);
return -1;
}
static int
test_eal_fs(void)
{
if (test_parse_sysfs_value() < 0)
return -1;
return 0;
}
REGISTER_TEST_COMMAND(eal_fs_autotest, test_eal_fs);
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