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25 .TH FCHOWNAT 2 2012-05-04 "Linux" "Linux Programmer's Manual"
27 fchownat \- change ownership of a file relative to a directory \
31 .B #include <fcntl.h> /* Definition of AT_* constants */
32 .B #include <unistd.h>
34 .BI "int fchownat(int " dirfd ", const char *" pathname ,
35 .BI " uid_t " owner ", gid_t " group ", int " flags );
39 Feature Test Macro Requirements for glibc (see
40 .BR feature_test_macros (7)):
49 _XOPEN_SOURCE\ >=\ 700 || _POSIX_C_SOURCE\ >=\ 200809L
59 system call operates in exactly the same way as
61 except for the differences described in this manual page.
63 If the pathname given in
65 is relative, then it is interpreted relative to the directory
66 referred to by the file descriptor
68 (rather than relative to the current working directory of
69 the calling process, as is done by
71 for a relative pathname).
81 is interpreted relative to the current working
82 directory of the calling process (like
92 can either be 0, or include the following flag:
94 .B AT_SYMLINK_NOFOLLOW
97 is a symbolic link, do not dereference it:
98 instead operate on the link itself, like
102 dereferences symbolic links, like
108 On error, \-1 is returned and
110 is set to indicate the error.
112 The same errors that occur for
116 The following additional errors can occur for
121 is not a valid file descriptor.
124 Invalid flag specified in
131 is a file descriptor referring to a file other than a directory.
134 was added to Linux in kernel 2.6.16;
135 library support was added to glibc in version 2.4.
138 A similar system call exists on Solaris.
142 for an explanation of the need for
147 .BR path_resolution (7),