15 #include <sys/types.h>
28 std::unique_ptr<struct stat> stat(
const std::string& pathname);
34 void stat(
const std::string& pathname,
struct stat& st);
41 bool isdir(
const std::string& pathname);
44 bool isblk(
const std::string& pathname);
47 bool ischr(
const std::string& pathname);
50 bool isfifo(
const std::string& pathname);
53 bool islnk(
const std::string& pathname);
56 bool isreg(
const std::string& pathname);
59 bool issock(
const std::string& pathname);
62 time_t timestamp(
const std::string& file);
65 time_t timestamp(
const std::string& file, time_t def);
68 size_t size(
const std::string& file);
71 size_t size(
const std::string& file,
size_t def);
74 ino_t inode(
const std::string& file);
77 ino_t inode(
const std::string& file, ino_t def);
80 bool access(
const std::string& s,
int m);
83 bool exists(
const std::string& s);
89 std::string abspath(
const std::string& pathname);
104 MMap(
void* addr,
size_t length);
107 MMap& operator=(
const MMap&) =
delete;
110 size_t size()
const {
return length; }
115 operator const T*()
const {
return reinterpret_cast<const T*
>(addr); }
118 operator T*()
const {
return reinterpret_cast<T*
>(addr); };
150 [[noreturn]]
virtual void throw_error(
const char* desc);
154 void fstat(
struct stat& st);
155 void fchmod(mode_t mode);
157 size_t write(
const void* buf,
size_t count);
162 void write_all(
const void* buf,
size_t count);
164 MMap mmap(
size_t length,
int prot,
int flags, off_t offset=0);
166 operator int()
const {
return fd; }
177 std::string pathname;
185 [[noreturn]]
virtual void throw_error(
const char* desc);
188 const std::string&
name()
const {
return pathname; }
199 struct iterator :
public std::iterator<std::input_iterator_tag, struct dirent>
201 Path* path =
nullptr;
203 struct dirent* cur_entry =
nullptr;
211 : dir(o.dir), cur_entry(o.cur_entry)
214 o.cur_entry =
nullptr;
220 bool operator==(
const iterator& i)
const;
221 bool operator!=(
const iterator& i)
const;
222 struct dirent& operator*()
const {
return *cur_entry; }
223 struct dirent* operator->()
const {
return cur_entry; }
248 using NamedFileDescriptor::NamedFileDescriptor;
253 Path(
const char* pathname,
int flags=0);
257 Path(
const std::string& pathname,
int flags=0);
261 Path(
Path& parent,
const char* pathname,
int flags=0);
264 Path& operator=(
const Path&) =
delete;
284 int openat(
const char* pathname,
int flags, mode_t mode=0777);
286 void fstatat(
const char* pathname,
struct stat& st);
289 void lstatat(
const char* pathname,
struct stat& st);
291 void unlinkat(
const char* pathname);
294 void rmdirat(
const char* pathname);
311 using NamedFileDescriptor::NamedFileDescriptor;
317 File(
const std::string& pathname,
int flags, mode_t mode=0777);
328 File& operator=(
const File&) =
delete;
331 static File mkstemp(
const std::string& prefix);
335 std::string read_file(
const std::string &file);
343 void write_file(
const std::string& file,
const std::string& data, mode_t mode=0777);
354 void write_file_atomically(
const std::string& file,
const std::string& data, mode_t mode=0777);
358 std::string mkdtemp(std::string templ);
362 void mkFilePath(
const std::string& file);
370 bool unlink_ifexists(
const std::string& file);
377 bool rename_ifexists(
const std::string& src,
const std::string& dst);
382 void mkdir_ifmissing(
const char* pathname, mode_t mode=0777);
384 void mkdir_ifmissing(
const std::string& pathname, mode_t mode=0777);
388 void makedirs(
const std::string& pathname, mode_t=0777);
397 std::string which(
const std::string& name);
400 void unlink(
const std::string& pathname);
403 void rmdir(
const std::string& pathname);
406 void rmtree(
const std::string& pathname);
420 const Directory* dir;
424 struct dirent* direntbuf;
430 const_iterator(
const Directory& dir);
435 const_iterator(
const const_iterator& i);
436 const_iterator& operator=(
const const_iterator& i);
439 const_iterator& operator++();
442 std::string operator*()
const;
444 bool operator==(
const const_iterator& iter)
const;
445 bool operator!=(
const const_iterator& iter)
const;
448 Directory(
const std::string& path);
452 const std::string& path()
const {
return m_path; }
458 const_iterator begin()
const;
461 const_iterator end()
const;
virtual void throw_error(const char *desc)
Throw an exception based on errno and the given message.
const std::string & name() const
Return the file pathname.
Definition: sys.h:188
Wraps a mmapped memory area, unmapping it on destruction.
Definition: sys.h:96
Common operations on file descriptors.
Definition: sys.h:132
open(2) file descriptors
Definition: sys.h:308
~File()
The destructor closes the file descriptor, but does not check errors on ::close().
iterator begin()
Begin iterator on all directory entries.
File descriptor with a name.
Definition: sys.h:174
void lstatat(const char *pathname, struct stat &st)
fstatat with the AT_SYMLINK_NOFOLLOW flag set
Iterator for directory entries.
Definition: sys.h:199
Path(const char *pathname, int flags=0)
Open the given pathname with flags | O_PATH.
iterator end()
End iterator on all directory entries.
void write_all(const void *buf, size_t count)
Write all the data in buf, retrying partial writes.
String functions.
Definition: benchmark.h:13
void rmtree()
Delete the directory pointed to by this Path, with all its contents.
~Path()
The destructor closes the file descriptor, but does not check errors on ::close().
virtual void throw_error(const char *desc)
Throw an exception based on errno and the given message.
Wrap a path on the file system opened with O_PATH.
Definition: sys.h:194
void rmdirat(const char *pathname)
unlinkat with the AT_REMOVEDIR flag set