chdir(2) - f39

1chdir(2)                      System Calls Manual                     chdir(2)
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NAME

6       chdir, fchdir - change working directory
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LIBRARY

9       Standard C library (libc, -lc)
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SYNOPSIS

12       #include <unistd.h>
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14       int chdir(const char *path);
15       int fchdir(int fd);
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17   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
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19       fchdir():
20           _XOPEN_SOURCE >= 500
21               || /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 200809L
22               || /* glibc up to and including 2.19: */ _BSD_SOURCE
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DESCRIPTION

25       chdir() changes the current working directory of the calling process to
26       the directory specified in path.
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28       fchdir() is identical to chdir(); the only difference is that  the  di‐
29       rectory is given as an open file descriptor.
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RETURN VALUE

32       On  success,  zero is returned.  On error, -1 is returned, and errno is
33       set to indicate the error.
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ERRORS

36       Depending on the filesystem, other errors can be  returned.   The  more
37       general errors for chdir() are listed below:
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39       EACCES Search  permission  is denied for one of the components of path.
40              (See also path_resolution(7).)
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42       EFAULT path points outside your accessible address space.
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44       EIO    An I/O error occurred.
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46       ELOOP  Too many symbolic links were encountered in resolving path.
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48       ENAMETOOLONG
49              path is too long.
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51       ENOENT The directory specified in path does not exist.
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53       ENOMEM Insufficient kernel memory was available.
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55       ENOTDIR
56              A component of path is not a directory.
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58       The general errors for fchdir() are listed below:
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60       EACCES Search permission was denied on the directory open on fd.
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62       EBADF  fd is not a valid file descriptor.
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64       ENOTDIR
65              fd does not refer to a directory.
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STANDARDS

68       POSIX.1-2008.
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HISTORY

71       POSIX.1-2001, SVr4, 4.4BSD.
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NOTES

74       The current working directory is the starting  point  for  interpreting
75       relative pathnames (those not starting with '/').
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77       A child process created via fork(2) inherits its parent's current work‐
78       ing directory.  The current working directory is left unchanged by  ex‐
79       ecve(2).
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