chdir(2) - NetBSD Manual Pages

Command: Section: Arch: Collection:  
CHDIR(2)                  NetBSD 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() function causes the named directory to become the current working direc- tory, that is, the starting point for path searches of 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 of path- names 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, a value of 0 is returned. Otherwise, a value of -1 is returned and errno is set to indicate the error.
ERRORS
chdir() 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 any component of the path name. [EFAULT] path points outside the process's allocated address space. [EIO] An I/O error occurred while reading from or writing to the file system. [ELOOP] Too many symbolic links were encountered in translat- ing the pathname. [ENAMETOOLONG] A component of a pathname exceeded {NAME_MAX} charac- ters, or an entire path name exceeded {PATH_MAX} char- acters. [ENOENT] The named directory does not exist. [ENOTDIR] A component of the path prefix is not a directory. 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 refer- enced by the file descriptor. [EBADF] The argument fd is not a valid file descriptor. [ENOTDIR] The file descriptor does not reference a directory. [EPERM] The argument fd references a directory which is not at or below the current process's root directory.
SEE ALSO
chroot(2), getcwd(3)
STANDARDS
The chdir() function conforms to ISO/IEC 9945-1:1990 (``POSIX.1'').
HISTORY
A chdir() function call appeared in Version 1 AT&T UNIX. The fchdir() function call appeared in 4.2BSD. NetBSD 9.99 September 1, 2019 NetBSD 9.99
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