1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 #include <stdio.h> 17 #include <sys/time.h> 18 #include <sys/types.h> 19 #include <unistd.h> 20 #include <stdlib.h> 21 #include <signal.h> 22 #include <string.h> 23 #include <sys/stat.h> 24 #include <sys/errno.h> 25 #include <fcntl.h> 26 #include <ctype.h> 27 #include "ioshark.h" 28 29 /* 30 * Real simple utility that just extracts and dumps the IOshark filenames 31 * one per line from the ioshark_filenames file. Useful in debugging. 32 */ 33 int 34 main(int argc __attribute__((unused)), char **argv) 35 { 36 char *progname; 37 static FILE *filename_cache_fp; 38 struct stat st; 39 struct ioshark_filename_struct *filename_cache; 40 int filename_cache_num_entries; 41 size_t filename_cache_size; 42 int i; 43 44 progname = argv[0]; 45 if (stat("ioshark_filenames", &st) < 0) { 46 fprintf(stderr, "%s Can't stat ioshark_filenames file\n", 47 progname); 48 exit(EXIT_FAILURE); 49 } 50 filename_cache_num_entries = st.st_size / 51 sizeof(struct ioshark_filename_struct); 52 filename_cache_fp = fopen("ioshark_filenames", "r"); 53 if (filename_cache_fp == NULL) { 54 fprintf(stderr, "%s Cannot open ioshark_filenames file\n", 55 progname); 56 exit(EXIT_FAILURE); 57 } 58 /* Preallocate a fixed size of entries */ 59 filename_cache_size = filename_cache_num_entries + 1024; 60 filename_cache = calloc(filename_cache_size, 61 sizeof(struct ioshark_filename_struct)); 62 if (filename_cache == NULL) { 63 fprintf(stderr, "%s Can't allocate memory - this is fatal\n", 64 __func__); 65 exit(EXIT_FAILURE); 66 } 67 if (fread(filename_cache, 68 sizeof(struct ioshark_filename_struct), 69 filename_cache_num_entries, 70 filename_cache_fp) != (size_t)filename_cache_num_entries) { 71 fprintf(stderr, "%s Can't read ioshark_filenames file\n", 72 progname); 73 exit(EXIT_FAILURE); 74 } 75 for (i = 0 ; i < filename_cache_num_entries ; i++) { 76 printf("%s\n", filename_cache[i].path); 77 } 78 free(filename_cache); 79 fclose(filename_cache_fp); 80 } 81
