SYMLINKATSection: Linux Programmer's Manual (2)
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NAMEsymlinkat - create a symbolic link relative to a directory file descriptor
#define _ATFILE_SOURCE #include <stdio.h> int symlinkat(const char *oldpath, int newdirfd, const char *newpath);
DESCRIPTIONThe symlinkat() system call operates in exactly the same way as symlink(2), except for the differences described in this manual page.
If the pathname given in newpath is relative, then it is interpreted relative to the directory referred to by the file descriptor newdirfd (rather than relative to the current working directory of the calling process, as is done by symlink(2) for a relative pathname).
If newpath is relative and newdirfd is the special value AT_FDCWD, then newpath is interpreted relative to the current working directory of the calling process (like symlink(2)).
RETURN VALUEOn success, symlinkat() returns 0. On error, -1 is returned and errno is set to indicate the error.
ERRORSThe same errors that occur for symlink(2) can also occur for symlinkat(). The following additional errors can occur for symlinkat():
- newdirfd is not a valid file descriptor.
- newpath is relative and newdirfd is a file descriptor referring to a file other than a directory.
VERSIONSsymlinkat() was added to Linux in kernel 2.6.16.
CONFORMING TOThis system call is non-standard but is proposed for inclusion in a future revision of POSIX.1.
NOTESSee openat(2) for an explanation of the need for symlinkat().
SEE ALSOopenat(2), symlink(2), path_resolution(7)