mkdir(2)							System Calls Manual							  mkdir(2)

NAME

       mkdir - Creates a directory

SYNOPSIS

       #include <sys/stat.h>

       #include <sys/types.h>

       int mkdir (	const char *path,      mode_t mode );

STANDARDS

       Interfaces documented on this reference page conform to industry standards as follows:

       mkdir(): XSH5.0

       Refer to the standards(5) reference page for more information about industry standards and associated tags.

PARAMETERS

       Specifies the name of the new directory.

	      [Tru64 UNIX]  If NFS is installed on your system, this path can cross into another node.	In this case, the new directory is created
	      at that node.  If the final component of the path parameter refers to a symbolic link, the link is traversed and pathname resolution
	      continues.  Specifies the mask for the read, write, and execute (RWX) flags for owner, group, and others.

DESCRIPTION

       The  mkdir()  function  creates a new directory with the following attributes: The owner ID is set to the process's effective user ID.  The
       group ID is set to the group ID of its parent directory.

	      [Tru64 UNIX]  However, if the sys_v_mode tunable is set, then the group ID of the file is set to	the  effective	group  ID  of  the
	      process.	 With exception, if the S_ISGID bit of the parent directory is set, the group ID of the file is set to the group ID of the
	      parent directory and its S_ISGID bit is set.

	      If the group ID of the new file does not match the effective group of the process or one of  the	supplementary  group  IDs  of  the
	      process,	the  S_ISGID  bit  of  the  new file is cleared.  Permission and attribute bits are set according to the value of the mode
	      parameter modified by the process's file creation mask (see the umask() function).  This parameter is constructed by logically ORing
	      values described in the sys/mode.h header file.  The new directory is empty, except for . (dot) and ..  (dot-dot).

       To  execute the mkdir() function, a process must have search permission to get to the parent directory of the path parameter and write per-
       mission in the parent directory of the path parameter with respect to all of the system's configured access control policies.

       Upon successful completion, the mkdir() function marks the st_atime, st_ctime, and st_mtime fields of the directory for update,	and  marks
       the st_ctime and st_mtime fields of the new directory's parent directory for update.

RETURN VALUES

       Upon successful completion, the mkdir() function returns a value of 0 (zero). If the mkdir() function fails, a value of -1 is returned, and
       errno is set to indicate the error.

ERRORS

       If the mkdir() function fails, the directory is not created and errno may be set to one of the following  values:  Creating  the  requested
       directory  requires writing in a directory with a mode that denies write permission, or search permission is denied on the parent directory
       of the directory to be created.	The process does not have write access to the parent directory with respect to one of the system's  access
       policies.   The directory in which the entry for the new link is being placed cannot be extended because the user's quota of disk blocks or
       i-nodes on the file system containing the directory is exhausted.  The named file  already  exists.   The  path	parameter  is  an  invalid
       address.   The  owner  or  group  ID is not a value that is supported by this implementation.  A physical I/O error has occurred.  Too many
       links were encountered in translating path.  The link count of the parent directory would exceed LINK_MAX.  The length of the path  parame-
       ter  exceeds  PATH_MAX  or  a pathname component is longer than NAME_MAX.  A component of the path parameter does not exist or points to an
       empty string.  Unable to allocate a directory buffer.  The file system does not contain enough space to hold the contents of the new direc-
       tory or to extend the parent directory of the new directory.  A component of the path prefix is not a directory.  The named file resides on
       a read-only file system.

       [Tru64 UNIX]  For NFS file access, if the mkdir() function fails, errno may also be set to one of the following	values:  Indicates  either
       that  the  system file table is full, or that there are too many files currently open in the system.  Indicates a stale NFS file handle.  A
       client cannot make a directory because the server has unmounted or unexported the remote directory.

RELATED INFORMATION

       Commands: chmod(1), mkdir(1), mknod(8)

       Functions: chmod(2), mknod(2), rmdir(2), umask(2)

       Standards: standards(5) delim off

																	  mkdir(2)