сменить рабочий каталог (change working directory)
Пролог (Prolog)
This manual page is part of the POSIX Programmer's Manual. The
Linux implementation of this interface may differ (consult the
corresponding Linux manual page for details of Linux behavior),
or the interface may not be implemented on Linux.
Имя (Name)
chdir — change working directory
Синопсис (Synopsis)
#include <unistd.h>
int chdir(const char *path);
Описание (Description)
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 '/'.
Возвращаемое значение (Return value)
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.
Ошибки (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 a component of a pathname 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 names an existing file that is
neither a directory nor a symbolic link to a directory.
The chdir() function may fail if:
ELOOP More than {SYMLOOP_MAX} symbolic links were encountered
during resolution of the path argument.
ENAMETOOLONG
The length of a pathname exceeds {PATH_MAX}, or pathname
resolution of a symbolic link produced an intermediate
result with a length that exceeds {PATH_MAX}.
The following sections are informative.
Примеры (Examples)
Changing the Current Working Directory
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);
Использование в приложениях (Application usage)
None.
Обоснование (Rationale)
The chdir() function only affects the working directory of the
current process.
Будущие направления (Future directions)
None.
Смотри также (See also)
getcwd(3p)
The Base Definitions volume of POSIX.1‐2017, unistd.h(0p)
