com.oracle.svm.core.posix.headers

Class Dirent

java.lang.Object

com.oracle.svm.core.posix.headers.Dirent

public class Dirent
extends Object

Definitions manually translated from the C header file dirent.h.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Dirent.DIR This is the data type of directory stream objects.
static interface	Dirent.dirent
static interface	Dirent.direntPointer

Constructor Summary

Constructors

Constructor and Description
Dirent()

Method Summary

Modifier and Type	Method and Description
static int	alphasort(Dirent.direntPointer e1, Dirent.direntPointer e2) Function to compare two `struct dirent's alphabetically.
static int	closedir_no_transition(Dirent.DIR dirp)
static int	closedir(Dirent.DIR dirp) Close the directory stream DIRP.
static int	dirfd(Dirent.DIR dirp) Return the file descriptor used by DIRP.
static int	DT_BLK()
static int	DT_CHR()
static int	DT_DIR()
static int	DT_FIFO()
static int	DT_LNK()
static int	DT_REG()
static int	DT_SOCK()
static int	DT_UNKNOWN() File types for `d_type'.
static int	DT_WHT()
static Dirent.DIR	fdopendir(int fd) Same as opendir, but open the stream on the file descriptor FD.
static org.graalvm.word.SignedWord	getdirentries(int fd, org.graalvm.nativeimage.c.type.CCharPointer buf, org.graalvm.word.SignedWord nbytes, org.graalvm.word.PointerBase basep) Read directory entries from FD into BUF, reading at most NBYTES.
static int	MAXNAMLEN() `MAXNAMLEN' is the BSD name for what POSIX calls `NAME_MAX'.
static Dirent.DIR	opendir_no_transition(org.graalvm.nativeimage.c.type.CCharPointer name)
static Dirent.DIR	opendir(org.graalvm.nativeimage.c.type.CCharPointer name) Open a directory stream on NAME.
static int	readdir_r_no_transition(Dirent.DIR dirp, Dirent.dirent entry, Dirent.direntPointer result)
static int	readdir_r(Dirent.DIR dirp, Dirent.dirent entry, Dirent.direntPointer result) Reentrant version of `readdir'.
static Dirent.dirent	readdir(Dirent.DIR dirp) Read a directory entry from DIRP.
static void	rewinddir(Dirent.DIR dirp) Rewind DIRP to the beginning of the directory.
static int	scandir(org.graalvm.nativeimage.c.type.CCharPointer dir, org.graalvm.word.PointerBase namelist, org.graalvm.nativeimage.c.function.CFunctionPointer selector, org.graalvm.nativeimage.c.function.CFunctionPointer cmp) Scan the directory DIR, calling SELECTOR on each directory entry.
static int	scandirat(int dfd, org.graalvm.nativeimage.c.type.CCharPointer dir, org.graalvm.word.PointerBase namelist, org.graalvm.nativeimage.c.function.CFunctionPointer selector, org.graalvm.nativeimage.c.function.CFunctionPointer cmp) Similar to `scandir' but a relative DIR name is interpreted relative to the directory for which DFD is a descriptor.
static void	seekdir(Dirent.DIR dirp, long pos) Seek to position POS on DIRP.
static long	telldir(Dirent.DIR dirp) Return the current position of DIRP.
static int	versionsort(Dirent.direntPointer e1, Dirent.direntPointer e2) Function to compare two `struct dirent's by name & version.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Dirent

public Dirent()

Method Detail

DT_UNKNOWN

public static int DT_UNKNOWN()

File types for `d_type'.

DT_FIFO

public static int DT_FIFO()

DT_CHR

public static int DT_CHR()

DT_DIR

public static int DT_DIR()

DT_BLK

public static int DT_BLK()

DT_REG

public static int DT_REG()

DT_LNK

public static int DT_LNK()

DT_SOCK

public static int DT_SOCK()

DT_WHT

public static int DT_WHT()

opendir

public static Dirent.DIR opendir(org.graalvm.nativeimage.c.type.CCharPointer name)

Open a directory stream on NAME. Return a DIR stream on the directory, or NULL if it could not be opened.

opendir_no_transition

public static Dirent.DIR opendir_no_transition(org.graalvm.nativeimage.c.type.CCharPointer name)

fdopendir

public static Dirent.DIR fdopendir(int fd)

Same as opendir, but open the stream on the file descriptor FD.

closedir

public static int closedir(Dirent.DIR dirp)

Close the directory stream DIRP. Return 0 if successful, -1 if not.

closedir_no_transition

public static int closedir_no_transition(Dirent.DIR dirp)

readdir

public static Dirent.dirent readdir(Dirent.DIR dirp)

Read a directory entry from DIRP. Return a pointer to a `struct dirent' describing the entry, or NULL for EOF or error. The storage returned may be overwritten by a later readdir call on the same DIR stream.

readdir_r

public static int readdir_r(Dirent.DIR dirp,
                            Dirent.dirent entry,
                            Dirent.direntPointer result)

Reentrant version of `readdir'. Return in RESULT a pointer to the next entry.

readdir_r_no_transition

public static int readdir_r_no_transition(Dirent.DIR dirp,
                                          Dirent.dirent entry,
                                          Dirent.direntPointer result)

rewinddir

public static void rewinddir(Dirent.DIR dirp)

Rewind DIRP to the beginning of the directory.

seekdir

public static void seekdir(Dirent.DIR dirp,
                           long pos)

Seek to position POS on DIRP.

telldir

public static long telldir(Dirent.DIR dirp)

Return the current position of DIRP.

dirfd

public static int dirfd(Dirent.DIR dirp)

Return the file descriptor used by DIRP.

MAXNAMLEN

public static int MAXNAMLEN()

`MAXNAMLEN' is the BSD name for what POSIX calls `NAME_MAX'.

scandir

public static int scandir(org.graalvm.nativeimage.c.type.CCharPointer dir,
                          org.graalvm.word.PointerBase namelist,
                          org.graalvm.nativeimage.c.function.CFunctionPointer selector,
                          org.graalvm.nativeimage.c.function.CFunctionPointer cmp)

Scan the directory DIR, calling SELECTOR on each directory entry. Entries for which SELECT returns nonzero are individually malloc'd, sorted using qsort with CMP, and collected in a malloc'd array inNAMELIST. Returns the number of entries selected, or -1 on error.

scandirat

public static int scandirat(int dfd,
                            org.graalvm.nativeimage.c.type.CCharPointer dir,
                            org.graalvm.word.PointerBase namelist,
                            org.graalvm.nativeimage.c.function.CFunctionPointer selector,
                            org.graalvm.nativeimage.c.function.CFunctionPointer cmp)

Similar to `scandir' but a relative DIR name is interpreted relative to the directory for which DFD is a descriptor.

alphasort

public static int alphasort(Dirent.direntPointer e1,
                            Dirent.direntPointer e2)

Function to compare two `struct dirent's alphabetically.

getdirentries

public static org.graalvm.word.SignedWord getdirentries(int fd,
                                                        org.graalvm.nativeimage.c.type.CCharPointer buf,
                                                        org.graalvm.word.SignedWord nbytes,
                                                        org.graalvm.word.PointerBase basep)

Read directory entries from FD into BUF, reading at most NBYTES. Reading starts at offset *BASEP, and *BASEP is updated with the new position after reading. Returns the number of bytes read; zero when at end of directory; or -1 for errors.

versionsort

public static int versionsort(Dirent.direntPointer e1,
                              Dirent.direntPointer e2)

Function to compare two `struct dirent's by name & version.