1 #define PETSC_DESIRE_FEATURE_TEST_MACROS /* for lstat() */ 2 #include <petscsys.h> 3 #include <sys/stat.h> 4 #if defined(PETSC_HAVE_DIRECT_H) 5 #include <direct.h> 6 #endif 7 #if defined(PETSC_HAVE_IO_H) 8 #include <io.h> 9 #endif 10 #if defined(PETSC_HAVE_STDINT_H) 11 #include <stdint.h> 12 #endif 13 #if defined(PETSC_HAVE_UNISTD_H) /* for mkdtemp */ 14 #include <unistd.h> 15 #endif 16 17 static PetscErrorCode PetscPathJoin(const char dname[], const char fname[], size_t n, char fullname[]) 18 { 19 size_t l1, l2; 20 PetscFunctionBegin; 21 PetscCall(PetscStrlen(dname, &l1)); 22 PetscCall(PetscStrlen(fname, &l2)); 23 PetscCheck((l1 + l2 + 2) <= n, PETSC_COMM_SELF, PETSC_ERR_ARG_SIZ, "Path length is greater than buffer size"); 24 PetscCall(PetscStrncpy(fullname, dname, n)); 25 PetscCall(PetscStrlcat(fullname, "/", n)); 26 PetscCall(PetscStrlcat(fullname, fname, n)); 27 PetscFunctionReturn(PETSC_SUCCESS); 28 } 29 30 /*@C 31 PetscMkdir - Create a directory 32 33 Not Collective 34 35 Input Parameter: 36 . dir - the directory name 37 38 Level: advanced 39 40 .seealso: `PetscMktemp()`, `PetscRMTree()` 41 @*/ 42 PetscErrorCode PetscMkdir(const char dir[]) 43 { 44 int err; 45 PetscBool flg; 46 47 PetscFunctionBegin; 48 PetscCall(PetscTestDirectory(dir, 'w', &flg)); 49 if (flg) PetscFunctionReturn(PETSC_SUCCESS); 50 #if defined(PETSC_HAVE__MKDIR) && defined(PETSC_HAVE_DIRECT_H) 51 err = _mkdir(dir); 52 #else 53 err = mkdir(dir, S_IRWXU | S_IRGRP | S_IXGRP); 54 #endif 55 PetscCheck(!err, PETSC_COMM_SELF, PETSC_ERR_FILE_UNEXPECTED, "Could not create dir: %s", dir); 56 PetscFunctionReturn(PETSC_SUCCESS); 57 } 58 59 /*@C 60 PetscMkdtemp - Create a directory with a unique name given a name template. 61 62 Input Parameter: 63 . dir - file name template, the last six characters must be 'XXXXXX', and they will be modified upon return 64 65 Level: advanced 66 67 .seealso: `PetscMkdir()`, `PetscRMTree()` 68 @*/ 69 PetscErrorCode PetscMkdtemp(char dir[]) 70 { 71 PetscFunctionBegin; 72 #if defined(PETSC_HAVE_WINDOWS_H) && defined(PETSC_HAVE_IO_H) && defined(PETSC_HAVE__MKDIR) && defined(PETSC_HAVE_DIRECT_H) 73 { 74 int err = 1; 75 char name[PETSC_MAX_PATH_LEN]; 76 PetscInt i = 0, max_retry = 26; 77 size_t len; 78 79 while (err && i < max_retry) { 80 PetscCall(PetscStrncpy(name, dir, sizeof(name))); 81 PetscCall(PetscStrlen(name, &len)); 82 err = _mktemp_s(name, len + 1); 83 PetscCheck(!err, PETSC_COMM_SELF, PETSC_ERR_FILE_UNEXPECTED, "Could not generate a unique name using the template: %s", dir); 84 err = _mkdir(name); 85 i++; 86 } 87 PetscCheck(!err, PETSC_COMM_SELF, PETSC_ERR_FILE_UNEXPECTED, "Exceeds maximum retry time when creating temporary dir using the template: %s", dir); 88 PetscCall(PetscStrncpy(dir, name, len + 1)); 89 } 90 #else 91 dir = mkdtemp(dir); 92 PetscCheck(dir, PETSC_COMM_SELF, PETSC_ERR_FILE_UNEXPECTED, "Could not create temporary dir"); 93 #endif 94 PetscFunctionReturn(PETSC_SUCCESS); 95 } 96 97 #if defined(PETSC_HAVE_DIRECT_H) 98 PetscErrorCode PetscRMTree(const char dir[]) 99 { 100 struct _finddata_t data; 101 char loc[PETSC_MAX_PATH_LEN]; 102 PetscBool flg1, flg2; 103 #if defined(PETSC_HAVE_STDINT_H) 104 intptr_t handle; 105 #else 106 long handle; 107 #endif 108 109 PetscFunctionBegin; 110 PetscCall(PetscPathJoin(dir, "*", PETSC_MAX_PATH_LEN, loc)); 111 handle = _findfirst(loc, &data); 112 if (handle == -1) { 113 PetscBool flg; 114 PetscCall(PetscTestDirectory(loc, 'r', &flg)); 115 PetscCheck(!flg, PETSC_COMM_SELF, PETSC_ERR_FILE_UNEXPECTED, "Cannot access directory to delete: %s", dir); 116 PetscCall(PetscTestFile(loc, 'r', &flg)); 117 PetscCheck(!flg, PETSC_COMM_SELF, PETSC_ERR_FILE_UNEXPECTED, "Specified path is a file - not a dir: %s", dir); 118 PetscFunctionReturn(PETSC_SUCCESS); /* perhaps the dir was not yet created */ 119 } 120 while (_findnext(handle, &data) != -1) { 121 PetscCall(PetscStrcmp(data.name, ".", &flg1)); 122 PetscCall(PetscStrcmp(data.name, "..", &flg2)); 123 if (flg1 || flg2) continue; 124 PetscCall(PetscPathJoin(dir, data.name, PETSC_MAX_PATH_LEN, loc)); 125 if (data.attrib & _A_SUBDIR) { 126 PetscCall(PetscRMTree(loc)); 127 } else { 128 PetscCheck(!remove(loc), PETSC_COMM_SELF, PETSC_ERR_FILE_UNEXPECTED, "Could not delete file: %s", loc); 129 } 130 } 131 _findclose(handle); 132 PetscCheck(!_rmdir(dir), PETSC_COMM_SELF, PETSC_ERR_FILE_UNEXPECTED, "Could not delete dir: %s", dir); 133 PetscFunctionReturn(PETSC_SUCCESS); 134 } 135 #else 136 #include <dirent.h> 137 #include <unistd.h> 138 #include <errno.h> 139 140 /*@C 141 PetscRMTree - delete a directory and all of its children 142 143 Input Parameter: 144 . dir - the name of the directory 145 146 Level: advanced 147 148 .seealso: `PetscMkdtemp()`, `PetscMkdir()` 149 @*/ 150 PetscErrorCode PetscRMTree(const char dir[]) 151 { 152 struct dirent *data; 153 char loc[PETSC_MAX_PATH_LEN]; 154 PetscBool flg1, flg2; 155 DIR *dirp; 156 struct stat statbuf; 157 158 PetscFunctionBegin; 159 dirp = opendir(dir); 160 if (!dirp) { 161 PetscBool flg; 162 PetscCall(PetscTestDirectory(dir, 'r', &flg)); 163 PetscCheck(!flg, PETSC_COMM_SELF, PETSC_ERR_FILE_UNEXPECTED, "Cannot access directory to delete: %s", dir); 164 PetscCall(PetscTestFile(dir, 'r', &flg)); 165 PetscCheck(!flg, PETSC_COMM_SELF, PETSC_ERR_FILE_UNEXPECTED, "Specified path is a file - not a dir: %s", dir); 166 PetscFunctionReturn(PETSC_SUCCESS); /* perhaps the dir was not yet created */ 167 } 168 while ((data = readdir(dirp))) { 169 PetscCall(PetscStrcmp(data->d_name, ".", &flg1)); 170 PetscCall(PetscStrcmp(data->d_name, "..", &flg2)); 171 if (flg1 || flg2) continue; 172 PetscCall(PetscPathJoin(dir, data->d_name, PETSC_MAX_PATH_LEN, loc)); 173 PetscCheck(lstat(loc, &statbuf) >= 0, PETSC_COMM_SELF, PETSC_ERR_FILE_UNEXPECTED, "cannot run lstat() on: %s due to \"%s\"", loc, strerror(errno)); 174 if (S_ISDIR(statbuf.st_mode)) { 175 PetscCall(PetscRMTree(loc)); 176 } else { 177 PetscCheck(!unlink(loc), PETSC_COMM_SELF, PETSC_ERR_FILE_UNEXPECTED, "Could not delete file: %s due to \"%s\"", loc, strerror(errno)); 178 } 179 } 180 closedir(dirp); 181 PetscCheck(!rmdir(dir), PETSC_COMM_SELF, PETSC_ERR_FILE_UNEXPECTED, "Could not delete dir: %s due to \"%s\"", dir, strerror(errno)); 182 PetscFunctionReturn(PETSC_SUCCESS); 183 } 184 #endif 185