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CHDIR(2) FreeBSD System Calls Manual CHDIR(2)
NAME
chdir, fchdir -- change current working directory
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <unistd.h>
int
chdir(const char *path);
int
fchdir(int fd);
DESCRIPTION
The path argument points to the pathname of a directory. The chdir()
system call causes the named directory to become the current working
directory, that is, the starting point for path searches of pathnames not
beginning with a slash, `/'.
The fchdir() system call causes the directory referenced by fd to become
the current working directory, the starting point for path searches of
pathnames not beginning with a slash, `/'.
In order for a directory to become the current directory, a process must
have execute (search) access to the directory.
RETURN VALUES
Upon successful completion, the value 0 is returned; otherwise the
value -1 is returned and the global variable errno is set to indicate the
error.
ERRORS
The chdir() system call will fail and the current working directory will
be unchanged if one or more of the following are true:
[ENOTDIR] A component of the path prefix is not a directory.
[ENAMETOOLONG] A component of a pathname exceeded 255 characters, or
an entire path name exceeded 1023 characters.
[ENOENT] The named directory does not exist.
[ELOOP] Too many symbolic links were encountered in translat-
ing the pathname.
[EACCES] Search permission is denied for any component of the
path name.
[EFAULT] The path argument points outside the process's allo-
cated address space.
[EIO] An I/O error occurred while reading from or writing to
the file system.
The fchdir() system call will fail and the current working directory will
be unchanged if one or more of the following are true:
[EACCES] Search permission is denied for the directory refer-
enced by the file descriptor.
[ENOTDIR] The file descriptor does not reference a directory.
[EBADF] The argument fd is not a valid file descriptor.
SEE ALSO
chroot(2)
STANDARDS
The chdir() system call is expected to conform to ISO/IEC 9945-1:1990
(``POSIX.1'').
HISTORY
The chdir() system call appeared in Version 7 AT&T UNIX. The fchdir()
system call appeared in 4.2BSD.
FreeBSD 6.2 December 11, 1993 FreeBSD 6.2
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This page was generated on Wed Sep 19 20:03:18 BST 2007
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