1 #ifndef COMMON_H 2 #define COMMON_H 3 4 #define UNUSED __attribute__ ((unused)) 5 6 #define OPT_MISSING(prog, opt) do { \ 7 fprintf(stderr, "%s: option -%c ", prog, opt); \ 8 fprintf(stderr, "requires an argument\n"); \ 9 usage(prog, 1); \ 10 } while (0) 11 12 #define OPT_COLLIDING(prog, opt1, opt2) do { \ 13 fprintf(stderr, \ 14 "%s: option -%c collides with option -%c\n", \ 15 prog, opt1, opt2); \ 16 usage(prog, 1); \ 17 } while (0) 18 19 #define ARG_WRONG(prog, opt, arg) do { \ 20 fprintf(stderr, "%s: Wrong argument -%c %s\n", \ 21 prog, opt, arg); \ 22 usage(prog, 1); \ 23 } while (0) 24 25 #define USECS_PER_SEC 1000000 26 #define USECS_PER_MSEC 1000 27 #define NSECS_PER_MSEC 1000000 28 #define MSECS_PER_SEC 1000 29 #define NSECS_PER_USEC 1000 30 #define NSECS_PER_SEC (USECS_PER_SEC * NSECS_PER_USEC) 31 32 #define DECIMAL 10 33 #define BUFFSIZE 512 34 #define DEFBITMASKSIZE 64 35 36 #ifndef PATH_MAX 37 # define PATH_MAX 1024 38 #endif 39 40 #define while_each_childdir(basepath, p_relpath, c_relpath, c_pathlen) \ 41 { \ 42 struct dirent *direntp; \ 43 DIR *dp; \ 44 struct stat st; \ 45 char fullpath[PATH_MAX]; \ 46 int pathlen; \ 47 int start = 0; \ 48 \ 49 if (basepath[strlen(basepath) - 1] == '/' \ 50 && p_relpath[0] == '/') \ 51 start = 1; \ 52 \ 53 snprintf(fullpath, sizeof(fullpath), "%s%s", basepath, \ 54 p_relpath + start); \ 55 pathlen = strlen(fullpath); \ 56 \ 57 if ((dp = opendir(fullpath)) == NULL) \ 58 return -1; \ 59 \ 60 while ((direntp = readdir(dp)) != NULL) { \ 61 if (!strcmp(direntp->d_name, ".") \ 62 || !strcmp(direntp->d_name, "..")) \ 63 continue; \ 64 if (fullpath[pathlen - 1] == '/') { \ 65 fullpath[pathlen - 1] = '\0'; \ 66 pathlen--; \ 67 } \ 68 sprintf(fullpath + pathlen, "/%s", direntp->d_name); \ 69 stat(fullpath, &st); \ 70 if (S_ISDIR(st.st_mode)) { \ 71 start = strlen(basepath); \ 72 if (basepath[start - 1] == '/') \ 73 start--; \ 74 snprintf(c_relpath, c_pathlen, "%s", \ 75 fullpath + start); 76 77 #define end_while_each_childdir \ 78 } \ 79 } \ 80 \ 81 closedir(dp); \ 82 } 83 84 #endif 85