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readlink(2) [bsd man page]

READLINK(2)							System Calls Manual						       READLINK(2)

NAME
readlink - read value of a symbolic link SYNOPSIS
cc = readlink(path, buf, bufsiz) int cc; char *path, *buf; int bufsiz; DESCRIPTION
Readlink places the contents of the symbolic link name in the buffer buf, which has size bufsiz. The contents of the link are not null terminated when returned. RETURN VALUE
The call returns the count of characters placed in the buffer if it succeeds, or a -1 if an error occurs, placing the error code in the global variable errno. ERRORS
Readlink will fail and the file mode will be unchanged if: [ENOTDIR] A component of the path prefix is not a directory. [EINVAL] The pathname contains a character with the high-order bit set. [ENAMETOOLONG] A component of a pathname exceeded 255 characters, or an entire path name exceeded 1023 characters. [ENOENT] The named file does not exist. [EACCES] Search permission is denied for a component of the path prefix. [ELOOP] Too many symbolic links were encountered in translating the pathname. [EINVAL] The named file is not a symbolic link. [EIO] An I/O error occurred while reading from the file system. [EFAULT] Buf extends outside the process's allocated address space. SEE ALSO
stat(2), lstat(2), symlink(2) 4.2 Berkeley Distribution August 26, 1985 READLINK(2)

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READLINK(2)						     Linux Programmer's Manual						       READLINK(2)

NAME
readlink - read value of a symbolic link SYNOPSIS
#include <unistd.h> int readlink(const char *path, char *buf, size_t bufsiz); DESCRIPTION
readlink places the contents of the symbolic link path in the buffer buf, which has size bufsiz. readlink does not append a NUL character to buf. It will truncate the contents (to a length of bufsiz characters), in case the buffer is too small to hold all of the contents. RETURN VALUE
The call returns the count of characters placed in the buffer if it succeeds, or a -1 if an error occurs, placing the error code in errno. ERRORS
ENOTDIR A component of the path prefix is not a directory. EINVAL bufsiz is not positive. ENAMETOOLONG A pathname, or a component of a pathname, was too long. ENOENT The named file does not exist. EACCES Search permission is denied for a component of the path prefix. ELOOP Too many symbolic links were encountered in translating the pathname. EINVAL The named file is not a symbolic link. EIO An I/O error occurred while reading from the file system. EFAULT buf extends outside the process's allocated address space. ENOMEM Insufficient kernel memory was available. CONFORMING TO
X/OPEN, 4.4BSD (the readlink function call appeared in 4.2BSD). SEE ALSO
stat(2), lstat(2), symlink(2) Linux 2.0.30 1997-08-21 READLINK(2)

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