chdir, fchdir: změnit pracovní adresář

Originální popis anglicky: chdir, fchdir - change working directory

Návod, kniha: Linux Programmer's Manual

STRUČNĚ

#include <unistd.h> int chdir(const char *path); int fchdir(int fd);

POPIS / INSTRUKCE

chdir changes the current directory to that specified in path. fchdir is identical to chdir; the only difference is that the directory is given as an open file descriptor.

NÁVRATOVÁ HODNOTA

On success, zero is returned. On error, -1 is returned, and errno is set appropriately.

CHYBY / ERRORY

Depending on the file system, other errors can be returned. The more general errors for chdir are listed below:

EACCES

Search permission is denied for one of the directories in the path prefix of path. (See also path_resolution(2).)

EFAULT

path points outside your accessible address space.

EIO

An I/O error occurred.

ELOOP

Too many symbolic links were encountered in resolving path.

ENAMETOOLONG

path is too long.

ENOENT

The file does not exist.

ENOMEM

Insufficient kernel memory was available.

ENOTDIR

A component of path is not a directory.

The general errors for fchdir are listed below:

EACCES

Search permission was denied on the directory open on fd.

EBADF

fd is not a valid file descriptor.

NOTES

The prototype for fchdir is only available if _BSD_SOURCE is defined (either explicitly, or implicitly, by not defining _POSIX_SOURCE or compiling with the -ansi flag).

ODPOVÍDAJÍCÍ

The chdir call is compatible with SVr4, SVID, POSIX, X/OPEN, 4.4BSD. SVr4 documents additional EINTR, ENOLINK, and EMULTIHOP error conditions but has no ENOMEM. POSIX.1 does not have ENOMEM or ELOOP error conditions. X/OPEN does not have EFAULT, ENOMEM or EIO error conditions. The fchdir call is compatible with SVr4, 4.4BSD and X/OPEN. SVr4 documents additional EIO, EINTR, and ENOLINK error conditions. X/OPEN documents additional EINTR and EIO error conditions.

SOUVISEJÍCÍ

chroot(2), path_resolution(2), getcwd(3)