mkdirat(2)

1MKDIRAT(2)                 Linux Programmer's Manual                MKDIRAT(2)
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NAME

6       mkdirat - create a directory relative to a directory file descriptor
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SYNOPSIS

9       #define _ATFILE_SOURCE
10       #include <sys/stat.h>
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12       int mkdirat(int dirfd, const char *pathname, mode_t mode);
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DESCRIPTION

15       The mkdirat() system call operates in exactly the same way as mkdir(2),
16       except for the differences described in this manual page.
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18       If the pathname given in pathname is relative, then it  is  interpreted
19       relative  to  the  directory  referred  to by the file descriptor dirfd
20       (rather than relative to the current working directory of  the  calling
21       process, as is done by mkdir(2) for a relative pathname).
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23       If  pathname  is relative and dirfd is the special value AT_FDCWD, then
24       pathname is interpreted relative to the current  working  directory  of
25       the calling process (like mkdir(2)).
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27       If pathname is absolute, then dirfd is ignored.
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RETURN VALUE

30       On success, mkdirat() returns 0.  On error, -1 is returned and errno is
31       set to indicate the error.
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ERRORS

34       The same errors that occur for mkdir(2) can also occur  for  mkdirat().
35       The following additional errors can occur for mkdirat():
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37       EBADF  dirfd is not a valid file descriptor.
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39       ENOTDIR
40              pathname is relative and dirfd is a file descriptor referring to
41              a file other than a directory.
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NOTES

44       See openat(2) for an explanation of the need for mkdirat().
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CONFORMING TO

47       This system call is non-standard but is proposed  for  inclusion  in  a
48       future revision of POSIX.1.
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VERSIONS

51       mkdirat() was added to Linux in kernel 2.6.16.
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