#include <unistd.h> int readlinkat(int dirfd, const char *path ", char *" buf ", size_t " bufsiz ); |
If the pathname given in path is relative, then it is interpreted relative to the directory referred to by the file descriptor dirfd (rather than relative to the current working directory of the calling process, as is done by readlink(2) for a relative pathname).
If the pathname given in path is relative and dirfd is the special value AT_FDCWD, thenpath is interpreted relative to the current working directory of the calling process (likereadlink(2)).
If the pathname given in path is absolute, then dirfd is ignored.
| 標籤 | 描述 |
|---|---|
| EBADF | dirfd is not a valid file descriptor. |
| ENOTDIR | |
| path is a relative path and dirfd is a file descriptor referring to a file other than a directory. | |