From 7c06276f0515c9a8790cee0a79f444138afe0d58 Mon Sep 17 00:00:00 2001 From: Michael Kerrisk Date: Fri, 21 Feb 2014 10:49:17 +0100 Subject: [PATCH] readlinkat.2: Convert to link to symlink.2 Signed-off-by: Michael Kerrisk --- man2/readlinkat.2 | 145 +--------------------------------------------- 1 file changed, 1 insertion(+), 144 deletions(-) diff --git a/man2/readlinkat.2 b/man2/readlinkat.2 index 899fea6c9..b29d1b541 100644 --- a/man2/readlinkat.2 +++ b/man2/readlinkat.2 @@ -1,144 +1 @@ -.\" This manpage is Copyright (C) 2006, Michael Kerrisk -.\" -.\" %%%LICENSE_START(VERBATIM) -.\" Permission is granted to make and distribute verbatim copies of this -.\" manual provided the copyright notice and this permission notice are -.\" preserved on all copies. -.\" -.\" Permission is granted to copy and distribute modified versions of this -.\" manual under the conditions for verbatim copying, provided that the -.\" entire resulting derived work is distributed under the terms of a -.\" permission notice identical to this one. -.\" -.\" Since the Linux kernel and libraries are constantly changing, this -.\" manual page may be incorrect or out-of-date. The author(s) assume no -.\" responsibility for errors or omissions, or for damages resulting from -.\" the use of the information contained herein. The author(s) may not -.\" have taken the same level of care in the production of this manual, -.\" which is licensed free of charge, as they might when working -.\" professionally. -.\" -.\" Formatted or processed versions of this manual, if unaccompanied by -.\" the source, must acknowledge the copyright and authors of this work. -.\" %%%LICENSE_END -.\" -.TH READLINKAT 2 2013-07-31 "Linux" "Linux Programmer's Manual" -.SH NAME -readlinkat \- read value of a symbolic link relative to -a directory file descriptor -.SH SYNOPSIS -.nf -.B #include /* Definition of AT_* constants */ -.B #include -.sp -.BI "int readlinkat(int " dirfd ", const char *" pathname , -.BI " char *" buf ", size_t " bufsiz ); -.fi -.sp -.in -4n -Feature Test Macro Requirements for glibc (see -.BR feature_test_macros (7)): -.in -.sp -.BR readlinkat (): -.PD 0 -.ad l -.RS 4 -.TP 4 -Since glibc 2.10: -_XOPEN_SOURCE\ >=\ 700 || _POSIX_C_SOURCE\ >=\ 200809L -.TP -Before glibc 2.10: -_ATFILE_SOURCE -.RE -.ad -.PD -.SH DESCRIPTION -The -.BR readlinkat () -system call operates in exactly the same way as -.BR readlink (2), -except for the differences described in this manual page. - -If the pathname given in -.I pathname -is relative, then it is interpreted relative to the directory -referred to by the file descriptor -.I dirfd -(rather than relative to the current working directory of -the calling process, as is done by -.BR readlink (2) -for a relative pathname). - -If -.I pathname -is relative and -.I dirfd -is the special value -.BR AT_FDCWD , -then -.I pathname -is interpreted relative to the current working -directory of the calling process (like -.BR readlink (2)). - -If -.I pathname -is absolute, then -.I dirfd -is ignored. - -Since Linux 2.6.39, -.\" commit 65cfc6722361570bfe255698d9cd4dccaf47570d -.I pathname -can be an empty string, -in which case the call operates on the file referred to by -.IR dirfd -(which may have been obtained using the -.BR open (2) -.B O_PATH -flag). -In this case, -.I dirfd -can refer to any type of file, not just a directory. - -.SH "RETURN VALUE" -On success, -.BR readlinkat () -returns the number of bytes placed in -.IR buf . -On error, \-1 is returned and -.I errno -is set to indicate the error. -.SH ERRORS -The same errors that occur for -.BR readlink (2) -can also occur for -.BR readlinkat (). -The following additional errors can occur for -.BR readlinkat (): -.TP -.B EBADF -.I dirfd -is not a valid file descriptor. -.TP -.B ENOTDIR -.I pathname -is relative and -.I dirfd -is a file descriptor referring to a file other than a directory. -.SH VERSIONS -.BR readlinkat () -was added to Linux in kernel 2.6.16; -library support was added to glibc in version 2.4. -.SH CONFORMING TO -POSIX.1-2008. -.SH NOTES -See -.BR openat (2) -for an explanation of the need for -.BR readlinkat (). -.SH SEE ALSO -.BR openat (2), -.BR readlink (2), -.BR path_resolution (7) +.so man2/readlink.2