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CHDIR(2) | 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. Thechdir
() 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¶
Thechdir
() 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 translating the pathname.
- [
EACCES
] - Search permission is denied for any component of the path name.
- [
EFAULT
] - The path argument points outside the process's allocated address space.
- [
EIO
] - An I/O error occurred while reading from or writing to the file system.
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 referenced 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¶
Thechdir
() system call is expected to
conform to IEEE Std 1003.1-1990
(“POSIX.1”).
HISTORY¶
Thechdir
() system call appeared in
Version 7 AT&T UNIX. The
fchdir
() system call appeared in
4.2BSD.December 11, 1993 | Debian |