chdir(2POSIX)

NAME | SYNOPSIS | API RESTRICTIONS | FEATURES | DESCRIPTION | RETURN VALUES | ATTRIBUTES | SEE ALSO | STANDARDS

NAME

chdir, fchdir- change current directory

SYNOPSIS

#include <unistd.h>

int chdir(const char * path);
int fchdir(int fd);

API RESTRICTIONS

The function or functions documented here may not be used safely in all application contexts with all APIs provided in the ChorusOS 5.0 product.

See API(5FEA) for details.

FEATURES

MSDOSFS, NFS_CLIENT, UFS

DESCRIPTION

path points to the path name of a directory. chdir causes the named directory to become the current working directory of the calling process, the starting point for path searches for pathnames not beginning with a slash ( / ).

The fchdir function causes the directory referenced by fd to become the current working directory, the starting point for path searches for 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 both chdir , and fchdir return 0; otherwise they return -1 and set errno to indicate one of the following error conditions:

[ENOTDIR]

A component of the path name is not a directory.

[ENOENT]

The named directory does not exist.

[EACCES]

Search permission is denied for a component of the path name.

[EFAULT]

path points outside the allocated address sp ace of the process.

[ENAMETOOLONG]

The length of a component of path exceeds NAME_MAX characters or the length of path exceeds PATH_MAX characters.

[ELOOP]

Too many symbolic links were encountered during analysis of path .

[EIO]

An I/O error occurred while reading from the file system.

fchdir 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 referenced by the file descriptor.

[ENOTDIR]

The file descriptor does not reference a directory.

[EBADF]

The fd argument is not a valid file descriptor.

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Interface Stability	Evolving
MT-Level	Async-Signal-Safe

SEE ALSO

chroot(2POSIX)

STANDARDS

chdir is expected to conform to IEEE Std 1003.1-1988 POSIX .

ChorusOS 5.0  Last Revised December 2001

NAME | SYNOPSIS | API RESTRICTIONS | FEATURES | DESCRIPTION | RETURN VALUES | ATTRIBUTES | SEE ALSO | STANDARDS