NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | ATTRIBUTES | SUMMARY OF TRUSTED SOLARIS CHANGES | SEE ALSO
#include <sys/types.h> #include <sys/stat.h>int mkdir(const char *path, mode_t mode);
The mkdir() function creates a new directory named by the path name pointed to by path. The mode of the new directory is initialized from mode (see chmod(2) for values of mode). The protection part of the mode argument is modified by the process' file creation mask (see umask(2)).
The directory's owner ID is set to the process's effective user ID. The directory's group ID is set to the process's effective group ID, or if the S_ISGID bit is set in the parent directory, then the group ID of the directory is inherited from the parent. The S_ISGID bit of the new directory is inherited from the parent directory.
If path is a symbolic link, it is not followed.
The newly created directory is empty with the exception of entries for itself (.) and its parent directory (. .).
Upon successful completion, mkdir() marks for update the st_atime, st_ctime, and st_mtime fields of the directory. Also, the st_ctime and st_mtime fields of the directory that contains the new entry are marked for update. This system call will not create a directory in a multilevel directory. Single-level directories are automatically created as needed during path-name lookup and the getsldname(2) system call.
The Trusted Solaris operating environment distinguishes directories with sensitivity labels from unlabeled directories through special prefixes called adornments that are appended to the beginning of the directory's name. See setfsattr(1M). A multilevel directory has the default adornment ".MLD."; a single-level directory has the adornment ".SLD.n/", where n is a number. If the directory name includes the multilevel adornment, the directory will be created as a multilevel directory, provided all other conditions for success are met. Use the mldpwd command within a multilevel directory to see the adorned names of the multilevel directory and the single-level directories. For example, executing the mldpwd command within the user_name home directory shows this output: /export/home/.MLD.user_name/.SLD.2
Use the mldrealpath command to see the adorned name for a file or directory within a multilevel directory. For example, mldrealpath file.c shows this output: /export/home/.MLD.user_name/.SLD.2/file.c
The new directory is created with its sensitivity label set to the sensitivity label of the calling process.
If the new directory's containing directory has a default access control list (ACL), the default and access ACLs of the new directory are set to the default ACL of the containing directory.
The mkdir() function will fail if:
Either a component of the path prefix denies search permission or write permission is denied on the parent directory of the directory to be created. To override these restrictions, the calling process may assert
one or more of these privileges: PRIV_FILE_DAC_SEARCH
, PRIV_FILE_MAC_SEARCH
, PRIV_FILE_DAC_WRITE
, and PRIV_FILE_MAC_WRITE
.
An attempt was made to create a directory at a sensitivity label outside the range of the file system.
The directory where the new file entry is being placed cannot be extended because the user's quota of disk blocks on that file system has been exhausted; the new directory cannot be created because the user's quota of disk blocks on that file system has been exhausted; or the user's quota of inodes on the file system where the file is being created has been exhausted.
The named file already exists.
The path argument points to an illegal address.
An I/O error has occurred while accessing the file system.
Too many symbolic links were encountered in translating path.
The maximum number of links to the parent directory would be exceeded.
The length of the path argument exceeds PATH_MAX, or the length of a path component exceeds NAME_MAX while _POSIX_NO_TRUNC is in effect.
A component of the path prefix does not exist or is a null pathname.
The path argument points to a remote machine and the link to that machine is no longer active.
No free space is available on the device containing the directory.
A component of the path prefix is not a directory.
The path prefix resides on a read-only file system.
See attributes(5) for descriptions of the following attributes:
ATTRIBUTE TYPE |
ATTRIBUTE VALUE |
---|---|
MT-Level |
Async-Signal-Safe |
Appropriate privilege is required to override access checks as described under File Access in Intro(2). The Trusted Solaris environment distinguishes directories with sensitivity labels from unlabeled directories through special prefixes called adornments.
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | ATTRIBUTES | SUMMARY OF TRUSTED SOLARIS CHANGES | SEE ALSO