chdir(2) [osf1 man page]
chdir(2) System Calls Manual chdir(2) NAME
chdir, fchdir - Changes the current directory SYNOPSIS
#include <unistd.h> int chdir ( const char *path ); int fchdir ( int filedes ); STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: chdir(): XSH5.0 fchdir(): XSH5.0 Refer to the standards(5) reference page for more information about industry standards and associated tags. PARAMETERS
Points to the pathname of the directory. Specifies the file descriptor of the directory. DESCRIPTION
The chdir() function changes the current directory to the directory indicated by the path parameter. The fchdir() function changes the current directory to the directory indicated by the filedes parameter. If the path parameter refers to a symbolic link, thechdir() function sets the current directory to the directory pointed to by the symbolic link. The current directory, also called the current working directory, is the starting point of searches for pathnames that do not begin with a / (slash). In order for a directory to become the current directory, the calling process must have search access to the directory. NOTES
The current working directory is shared between all threads within the same process. Therefore, one thread using the chdir() or fchdir() functions will affect every other thread in that process. RETURN VALUES
Upon successful completion, the chdir() function returns a value of 0 (zero). Otherwise, a value of -1 is returned and errno is set to indicate the error. ERRORS
If the chdir() function fails, the current directory remains unchanged and errno may be set to one of the following values: Search access is denied for any component of the pathname. The path parameter points outside the process's allocated address space. An I/O error occurred while reading from or writing to the file system. Too many symbolic links were encountered in translating the pathname. The length of the path argument exceeds PATH_MAX or a pathname component is longer than NAME_MAX. Pathname resolution of a symbolic link produced an intermediate result whose length exceeds PATH_MAX. The named directory does not exist, or is an empty string. A component of the path prefix is not a directory. If the fchdir() function fails, the current directory remains unchanged and errno may be set to one of the following values: The filedes parameter is not a valid open file descriptor. The file descriptor does not reference a directory. RELATED INFORMATION
Functions: chroot(2) Commands: cd(1) Standards: standards(5) delim off chdir(2)
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chdir(2) System Calls chdir(2) NAME
chdir, fchdir - change working directory SYNOPSIS
#include <unistd.h> int chdir(const char *path); int fchdir(int fildes); DESCRIPTION
The chdir() and fchdir() functions cause a directory pointed to by path or fildes to become the current working directory. The starting point for path searches for path names not beginning with / (slash). The path argument points to the path name of a directory. The fildes argument is an open file descriptor of a directory. For a directory to become the current directory, a process must have execute (search) access to the directory. RETURN VALUES
Upon successful completion, 0 is returned. Otherwise, -1 is returned, the current working directory is unchanged, and errno is set to indi- cate the error. ERRORS
The chdir() function will fail if: EACCES Search permission is denied for any component of the path name. EFAULT The path argument points to an illegal address. EINTR A signal was caught during the execution of the chdir() function. EIO An I/O error occurred while reading from or writing to the file system. ELOOP Too many symbolic links were encountered in translating path. ENAMETOOLONG The length of the path argument exceeds PATH_MAX, or the length of a path component exceeds NAME_MAX while _POSIX_NO_TRUNC is in effect. ENOENT Either a component of the path prefix or the directory named by path does not exist or is a null pathname. ENOLINK The path argument points to a remote machine and the link to that machine is no longer active. ENOTDIR A component of the path name is not a directory. The fchdir() function will fail if: EACCES Search permission is denied for fildes. EBADF The fildes argument is not an open file descriptor. EINTR A signal was caught during the execution of the fchdir() function. EIO An I/O error occurred while reading from or writing to the file system. ENOLINK The fildes argument points to a remote machine and the link to that machine is no longer active. ENOTDIR The open file descriptor fildes does not refer to a directory. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |Async-Signal-Safe | +-----------------------------+-----------------------------+ SEE ALSO
chroot(2), attributes(5), standards(5) SunOS 5.11 28 Dec 1996 chdir(2)