Originální popis anglicky:
chdir - change working directory
Návod, kniha: POSIX Programmer's Manual
#include <unistd.h>
int chdir(const char *
path);
The
chdir() function shall cause the directory named by the pathname
pointed to by the
path argument to become the current working
directory; that is, the starting point for path searches for pathnames not
beginning with
'/' .
Upon successful completion, 0 shall be returned. Otherwise, -1 shall be
returned, the current working directory shall remain unchanged, and
errno shall be set to indicate the error.
The
chdir() function shall fail if:
- EACCES
- Search permission is denied for any component of the
pathname.
- ELOOP
- A loop exists in symbolic links encountered during
resolution of the path argument.
- ENAMETOOLONG
- The length of the path argument exceeds {PATH_MAX}
or a pathname component is longer than {NAME_MAX}.
- ENOENT
- A component of path does not name an existing
directory or path is an empty string.
- ENOTDIR
- A component of the pathname is not a directory.
The
chdir() function may fail if:
- ELOOP
- More than {SYMLOOP_MAX} symbolic links were encountered
during resolution of the path argument.
- ENAMETOOLONG
- As a result of encountering a symbolic link in resolution
of the path argument, the length of the substituted pathname string
exceeded {PATH_MAX}.
The following sections are informative.
The following example makes the value pointed to by
directory,
/tmp, the current working directory.
#include <unistd.h>
...
char *directory = "/tmp";
int ret;
ret = chdir (directory);
None.
The
chdir() function only affects the working directory of the current
process.
None.
getcwd() , the Base Definitions volume of
IEEE Std 1003.1-2001,
<unistd.h>
Portions of this text are reprinted and reproduced in electronic form from IEEE
Std 1003.1, 2003 Edition, Standard for Information Technology -- Portable
Operating System Interface (POSIX), The Open Group Base Specifications Issue
6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics
Engineers, Inc and The Open Group. In the event of any discrepancy between
this version and the original IEEE and The Open Group Standard, the original
IEEE and The Open Group Standard is the referee document. The original
Standard can be obtained online at http://www.opengroup.org/unix/online.html
.
