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cp(1)

lchown(2)

link(2)

lstat(2)

open(2)

readlink(2)

unlink(2)

unistd(4)

symlink(2)                                                       symlink(2)

NAME
     symlink - make a symbolic link to a file

SYNOPSIS
     #include <unistd.h>

     int symlink(const char *name1, const char *name2);

DESCRIPTION
     symlink() creates a symbolic link name2 to the file name1. Either name
     may be an arbitrary pathname, the files need not be on the same file
     system, and name1 may be nonexistent.

     The file to which the symbolic link points is used when an open(2)
     operation is performed on the link. A stat(2) on a symbolic link
     returns the linked-to file, while an lstat(2) returns information
     about the link itself. This can lead to surprising results when a sym-
     bolic link is made to a directory. To avoid confusion in programs, the
     readlink(2) call can be used to read the contents of a symbolic link.

ERRORS
     The following error code descriptions are function-specific. You will
     find a general description in introprm2(2) or in errno(5).

     The symbolic link is made unless one or more of the following apply:

     EACCES        Write permission is denied in the directory where the
                   symbolic link is being created, or search permission is
                   denied for a component of the path prefix of name2.

     EDQUOT        The directory in which the entry for the new symbolic
                   link is being placed cannot be extended because the
                   user's quota of disk blocks on the file system contain-
                   ing the directory has been exhausted.

     EDQUOT        The new symbolic link cannot be created because the
                   user's quota of disk blocks on the file system which
                   will contain the link has been exhausted.

     EDQUOT        The user's quota of inodes on the file system on which
                   the file is being created has been exhausted.

     EEXIST        The file referred to by name2 already exists.

     EFAULT        name1 or name2 points outside the allocated address
                   space for the process.

     EIO           An I/O error occurs while reading from or writing to the
                   file system.

     ELOOP         Too many symbolic links are encountered in translating
                   name2.



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symlink(2)                                                       symlink(2)

     ENAMETOOLONG  The length of the name1 or name2 argument exceeds
                   PATHMAX, or the length of a name1 or name2 component
                   exceeds NAMEMAX.

     ENOENT        A component of the path prefix of name2 does not exist.

     ENOSPC        The directory in which the entry for the new symbolic
                   link is being placed cannot be extended because no space
                   is left on the file system containing the directory.

     ENOSPC        The new symbolic link cannot be created because no space
                   is left on the file system which will contain the link.

     ENOSPC        There are no free inodes on the file system on which the
                   file is being created.

     ENOSYS        The file system does not support symbolic links.

     ENOTDIR       A component of the path prefix of name2 is not a direc-
                   tory.

     EROFS         The file name2 would reside on a read-only file system.

     The symlink() function may fail if:

     ENAMETOOLONG  Pathname resolution of a symbolic link produced an
                   intermediate result whose length exceeds PATHMAX.

RESULT
     Upon successful completion symlink() returns a value of 0; otherwise,
     it returns -1 and places an error code in errno.

APPLICATION USAGE
     Like a hard link, a symbolic link allows a file to have multiple logi-
     cal names. The presence of a hard link guarantees the existence of a
     file, even after the original name has been removed. A symbolic link
     provides no such assurance; in fact, the file named by the name1 argu-
     ment need not exist when the link is created. A symbolic link can
     cross file system boundaries.

     Normal permission checks are made on each component of the symbolic
     link pathname during its resolution.

SEE ALSO
     cp(1), lchown(2), link(2), lstat(2), open(2), readlink(2), unlink(2),
     unistd(4).








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