ceph/src/seastar/dpdk/app/test/test_eal_fs.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2014 Intel Corporation
   3  */
   4
   5 #include "test.h"
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9 #include <errno.h>
  10
  11 /* eal_filesystem.h is not a public header file, so use relative path */
  12 #include "../../lib/librte_eal/common/eal_filesystem.h"
  13
  14 static int
  15 test_parse_sysfs_value(void)
  16 {
  17         char filename[PATH_MAX] = "";
  18         char proc_path[PATH_MAX];
  19         char file_template[] = "/tmp/eal_test_XXXXXX";
  20         int tmp_file_handle = -1;
  21         FILE *fd = NULL;
  22         unsigned valid_number;
  23         unsigned long retval = 0;
  24
  25 #ifdef RTE_EXEC_ENV_FREEBSD
  26         /* BSD doesn't have /proc/pid/fd */
  27         return 0;
  28 #endif
  29
  30         printf("Testing function eal_parse_sysfs_value()\n");
  31
  32         /* get a temporary filename to use for all tests - create temp file handle and then
  33          * use /proc to get the actual file that we can open */
  34         tmp_file_handle = mkstemp(file_template);
  35         if (tmp_file_handle == -1) {
  36                 perror("mkstemp() failure");
  37                 goto error;
  38         }
  39         snprintf(proc_path, sizeof(proc_path), "/proc/self/fd/%d", tmp_file_handle);
  40         if (readlink(proc_path, filename, sizeof(filename)) < 0) {
  41                 perror("readlink() failure");
  42                 goto error;
  43         }
  44         printf("Temporary file is: %s\n", filename);
  45
  46         /* test we get an error value if we use file before it's created */
  47         printf("Test reading a missing file ...\n");
  48         if (eal_parse_sysfs_value("/dev/not-quite-null", &retval) == 0) {
  49                 printf("Error with eal_parse_sysfs_value() - returned success on reading empty file\n");
  50                 goto error;
  51         }
  52         printf("Confirmed return error when reading empty file\n");
  53
  54         /* test reading a valid number value with "\n" on the end */
  55         printf("Test reading valid values ...\n");
  56         valid_number = 15;
  57         fd = fopen(filename,"w");
  58         if (fd == NULL) {
  59                 printf("line %d, Error opening %s: %s\n", __LINE__, filename, strerror(errno));
  60                 goto error;
  61         }
  62         fprintf(fd,"%u\n", valid_number);
  63         fclose(fd);
  64         fd = NULL;
  65         if (eal_parse_sysfs_value(filename, &retval) < 0) {
  66                 printf("eal_parse_sysfs_value() returned error - test failed\n");
  67                 goto error;
  68         }
  69         if (retval != valid_number) {
  70                 printf("Invalid value read by eal_parse_sysfs_value() - test failed\n");
  71                 goto error;
  72         }
  73         printf("Read '%u\\n' ok\n", valid_number);
  74
  75         /* test reading a valid hex number value with "\n" on the end */
  76         valid_number = 25;
  77         fd = fopen(filename,"w");
  78         if (fd == NULL) {
  79                 printf("line %d, Error opening %s: %s\n", __LINE__, filename, strerror(errno));
  80                 goto error;
  81         }
  82         fprintf(fd,"0x%x\n", valid_number);
  83         fclose(fd);
  84         fd = NULL;
  85         if (eal_parse_sysfs_value(filename, &retval) < 0) {
  86                 printf("eal_parse_sysfs_value() returned error - test failed\n");
  87                 goto error;
  88         }
  89         if (retval != valid_number) {
  90                 printf("Invalid value read by eal_parse_sysfs_value() - test failed\n");
  91                 goto error;
  92         }
  93         printf("Read '0x%x\\n' ok\n", valid_number);
  94
  95         printf("Test reading invalid values ...\n");
  96
  97         /* test reading an empty file - expect failure!*/
  98         fd = fopen(filename,"w");
  99         if (fd == NULL) {
 100                 printf("line %d, Error opening %s: %s\n", __LINE__, filename, strerror(errno));
 101                 goto error;
 102         }
 103         fclose(fd);
 104         fd = NULL;
 105         if (eal_parse_sysfs_value(filename, &retval) == 0) {
 106                 printf("eal_parse_sysfs_value() read invalid value  - test failed\n");
 107                 goto error;
 108         }
 109
 110         /* test reading a valid number value *without* "\n" on the end - expect failure!*/
 111         valid_number = 3;
 112         fd = fopen(filename,"w");
 113         if (fd == NULL) {
 114                 printf("line %d, Error opening %s: %s\n", __LINE__, filename, strerror(errno));
 115                 goto error;
 116         }
 117         fprintf(fd,"%u", valid_number);
 118         fclose(fd);
 119         fd = NULL;
 120         if (eal_parse_sysfs_value(filename, &retval) == 0) {
 121                 printf("eal_parse_sysfs_value() read invalid value  - test failed\n");
 122                 goto error;
 123         }
 124
 125         /* test reading a valid number value followed by string - expect failure!*/
 126         valid_number = 3;
 127         fd = fopen(filename,"w");
 128         if (fd == NULL) {
 129                 printf("line %d, Error opening %s: %s\n", __LINE__, filename, strerror(errno));
 130                 goto error;
 131         }
 132         fprintf(fd,"%uJ\n", valid_number);
 133         fclose(fd);
 134         fd = NULL;
 135         if (eal_parse_sysfs_value(filename, &retval) == 0) {
 136                 printf("eal_parse_sysfs_value() read invalid value  - test failed\n");
 137                 goto error;
 138         }
 139
 140         /* test reading a non-numeric value - expect failure!*/
 141         fd = fopen(filename,"w");
 142         if (fd == NULL) {
 143                 printf("line %d, Error opening %s: %s\n", __LINE__, filename, strerror(errno));
 144                 goto error;
 145         }
 146         fprintf(fd,"error\n");
 147         fclose(fd);
 148         fd = NULL;
 149         if (eal_parse_sysfs_value(filename, &retval) == 0) {
 150                 printf("eal_parse_sysfs_value() read invalid value  - test failed\n");
 151                 goto error;
 152         }
 153
 154         close(tmp_file_handle);
 155         unlink(filename);
 156         printf("eal_parse_sysfs_value() - OK\n");
 157         return 0;
 158
 159 error:
 160         if (fd)
 161                 fclose(fd);
 162         if (tmp_file_handle > 0)
 163                 close(tmp_file_handle);
 164         if (filename[0] != '\0')
 165                 unlink(filename);
 166         return -1;
 167 }
 168
 169 static int
 170 test_eal_fs(void)
 171 {
 172         if (test_parse_sysfs_value() < 0)
 173                 return -1;
 174         return 0;
 175 }
 176
 177 REGISTER_TEST_COMMAND(eal_fs_autotest, test_eal_fs);