Originální popis anglicky:
getdents - get directory entries
Návod, kniha: Linux Programmer's Manual
#include <unistd.h>
#include <linux/types.h>
#include <linux/dirent.h>
#include <linux/unistd.h>
_syscall3(int, getdents, uint, fd, struct dirent *, dirp, uint, count);
int getdents(unsigned int fd, struct dirent *dirp, unsigned int count);
This is not the function you are interested in. Look at
readdir(3) for
the POSIX conforming C library interface. This page documents the bare kernel
system call interface.
The system call
getdents reads several
dirent structures from the
directory pointed at by
fd into the memory area pointed to by
dirp. The parameter
count is the size of the memory area.
The
dirent structure is declared as follows:
struct dirent
{
long d_ino; /* inode number */
off_t d_off; /* offset to next dirent */
unsigned short d_reclen; /* length of this dirent */
char d_name [NAME_MAX+1]; /* file name (null-terminated) */
}
d_ino is an inode number.
d_off is the distance from the start of
the directory to the start of the next
dirent.
d_reclen is the
size of this entire
dirent.
d_name is a null-terminated file
name.
This call supersedes
readdir(2).
On success, the number of bytes read is returned. On end of directory, 0 is
returned. On error, -1 is returned, and
errno is set appropriately.
- EBADF
- Invalid file descriptor fd.
- EFAULT
- Argument points outside the calling process's address
space.
- EINVAL
- Result buffer is too small.
- ENOENT
- No such directory.
- ENOTDIR
- File descriptor does not refer to a directory.
SVr4, SVID. SVr4 documents additional ENOLINK, EIO error conditions.
readdir(2),
readdir(3)
