#include <sys/types.h>
#include <dirent.h>
int readdir_r(DIR* dirp,
struct dirent *entry,
struct dirent **result);
int readdir64_r(DIR* dirp,
struct dirent *entry,
struct dirent64 **result);
The readdir_r() function sets the dirent
structure pointed to by entry to the directory entry of
the current position in the directory stream referred to by dirp.
It stores a pointer to this structure at the location referenced
by result, and positions the directory stream at the next
entry. On successful return, the pointer returned at
*result has the same value as the argument
entry. Upon reaching the end of the
directory stream, this pointer has the value NULL.
The readdir64_r() function is similar to the
readdir_r() function, and is a part of the large file
extensions.
An entry for dot (.) and dot-dot (..) is returned.
If a file is removed from the directory after the most recent call
to opendir() or rewinddir(),
a subsequent call to readdir_r() returns an entry
for that file. If a file is added to the directory after the most recent
call to opendir() or rewinddir(),
a subsequent call to readdir_r() does not return an entry
for the added file.
readdir_r() fills all the members of the dirent
structure except d_ino which is always set to 0.
entry points to a struct dirent
that includes the member d_name. The size of the
d_name array is not specified; however, the number of bytes
preceding the terminating null character cannot exceed NAME_MAX.
After a call to fork(), both parent and child can
independently continue processing the directory stream using
readdir_r() or rewinddir() or both.
Directory streams are closed after a successful call to
exec() and hence execed image cannot use the directory
streams opened in the execing process.
- dirp
-
Points to the directory stream to be read.
- entry
-
Points to the directory entry to be filled.
- result
-
Points to the directory entry pointer which was returned in
entry.
If successful, readdir_r() and
readdir64_r() return zero.
When the operation encounters the end of a directory,
readdir_r() and readdir64_r()
return zero and set the result
parameter to NULL.
If dirp does not refer to an
open directory stream, readdir_r() and
readdir64_r() return EBADF.
If one of the values in the structure to be returned cannot be represented
correctly, readdir_r() and
readdir64_r() return EOVERFLOW.
POSIX.1 (1996).
readdir64_r(): Large File Specification, revision 1.5.
MT-Safe.
None.
PTC MKS Toolkit for Professional Developers
PTC MKS Toolkit for Professional Developers 64-Bit Edition
PTC MKS Toolkit for Enterprise Developers
PTC MKS Toolkit for Enterprise Developers 64-Bit Edition
- Functions:
- closedir(), opendir(), readdir(), rewinddir(), scandir(), seekdir(), telldir()
- Miscellaneous:
- lf64
PTC MKS Toolkit 10.4 Documentation Build 39.