mkdir (2)

NAME

       mkdir - create a directory

SYNOPSIS

       #include <sys/stat.h>
       #include <sys/types.h>

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

DESCRIPTION

       mkdir attempts to create a directory named pathname.

       mode  specifies the permissions to use. It is modified by the process's
       umask in the usual way: the permissions of the created file are (mode &
       ~umask).

       The  newly  created directory will be owned by the effective uid of the
       process.  If the directory containing the file has the set group id bit
       set,  or if the filesystem is mounted with BSD group semantics, the new
       directory will inherit the group ownership from its  parent;  otherwise
       it will be owned by the effective gid of the process.

       If  the  parent directory has the set group id bit set then so will the
       newly created directory.

RETURN VALUE

       mkdir returns zero on success, or -1 if an  error  occurred  (in  which
       case, errno is set appropriately).

ERRORS

       EPERM  The filesystem containing pathname does not support the creation
              of directories.

       EEXIST pathname already exists (not necessarily as a directory).   This
              includes the case where pathname is a symbolic link, dangling or
              not.

       EFAULT pathname points outside your accessible address space.

       EACCES The parent directory does not allow write permission to the pro-
              cess, or one of the directories in pathname did not allow search
              (execute) permission.

       ENAMETOOLONG
              pathname was too long.

       ENOENT A directory component in pathname does not exist or  is  a  dan-
              gling symbolic link.

       ENOTDIR
              A  component  used as a directory in pathname is not, in fact, a
              directory.

       ENOMEM Insufficient kernel memory was available.
              quota is exhausted.

CONFORMING TO

       SVr4, POSIX, BSD, SYSV, X/OPEN.  SVr4 documents additional EIO, EMULTI-
       HOP and ENOLINK error conditions; POSIX.1 omits ELOOP.

       There are many infelicities in the protocol underlying  NFS.   Some  of
       these affect mkdir.

SEE ALSO

       mkdir(1),  chmod(2),  mknod(2),  mount(2), rmdir(2), stat(2), umask(2),
       unlink(2)

Linux 1.0                         1994-03-29                          mkdir(2)