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25 .\" FIXME: Linux 2.6.39 added AT_EMPTY_PATH
27 .TH LINKAT 2 2009-12-13 "Linux" "Linux Programmer's Manual"
29 linkat \- create a file link relative to directory file descriptors
32 .B #include <fcntl.h> /* Definition of AT_* constants */
33 .B #include <unistd.h>
35 .BI "int linkat(int " olddirfd ", const char *" oldpath ,
36 .BI " int " newdirfd ", const char *" newpath ", int " flags );
40 Feature Test Macro Requirements for glibc (see
41 .BR feature_test_macros (7)):
50 _XOPEN_SOURCE\ >=\ 700 || _POSIX_C_SOURCE\ >=\ 200809L
60 system call operates in exactly the same way as
62 except for the differences described in this manual page.
64 If the pathname given in
66 is relative, then it is interpreted relative to the directory
67 referred to by the file descriptor
69 (rather than relative to the current working directory of
70 the calling process, as is done by
72 for a relative pathname).
82 is interpreted relative to the current working
83 directory of the calling process (like
96 except that a relative pathname is interpreted relative
97 to the directory referred to by the file descriptor
104 if it is a symbolic link (like
106 Since Linux 2.6.18, the flag
112 to be dereferenced if it is a symbolic link.
113 Before kernel 2.6.18, the
115 argument was unused, and had to be specified as 0.
120 On error, \-1 is returned and
122 is set to indicate the error.
124 The same errors that occur for
128 The following additional errors can occur for
135 is not a valid file descriptor.
141 is a file descriptor referring to a file other than a directory;
148 was added to Linux in kernel 2.6.16.
154 for an explanation of the need for
159 .BR path_resolution (7),