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If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner] .TH MKDIR 2 "Dec 23, 2014" .SH NAME mkdir, mkdirat \- make a directory .SH SYNOPSIS .LP .nf #include #include \fBint\fR \fBmkdir\fR(\fBconst char *\fR\fIpath\fR, \fBmode_t\fR \fImode\fR); .fi .LP .nf \fBint\fR \fBmkdirat\fR(\fBint\fR \fIfd\fR, \fBconst char *\fR\fIpath\fR, \fBmode_t\fR \fImode\fR); .fi .SH DESCRIPTION .LP The \fBmkdir()\fR and \fBmkidrat()\fR functions create a new directory named by the path name pointed to by \fIpath\fR. The mode of the new directory is initialized from \fImode\fR (see \fBchmod\fR(2) for values of mode). The protection part of the \fImode\fR argument is modified by the process's file creation mask (see \fBumask\fR(2)). .sp .LP The directory's owner \fBID\fR is set to the process's effective user ID. The directory's group \fBID\fR is set to the process's effective group ID, or if the \fBS_ISGID\fR bit is set in the parent directory, then the group \fBID\fR of the directory is inherited from the parent. The \fBS_ISGID\fR bit of the new directory is inherited from the parent directory. .sp .LP If \fIpath\fR names a symbolic link, \fBmkdir()\fR and \fBmkdirat()\fR fail and set errno to \fBEEXIST\fR. .sp .LP The newly created directory is empty with the exception of entries for itself (\fB\&.\fR) and its parent directory (\fB\&..\fR). .sp .LP The \fBmkdirat()\fR function behaves similarly to \fBmkdir()\fR; however, if \fIpath\fR is a relative path, then the directory represented by \fBfd\fR is used as the starting point for resolving \fIpath\fR. To use the processes current working directory, \fIfd\fR may be set to the value \fBAT_FDCWD\fR. .sp .LP Upon successful completion, \fBmkdir()\fR and \fBmkdirat()\fR mark for update the \fBst_atime\fR, \fBst_ctime\fR and \fBst_mtime\fR fields of the directory. Also, the \fBst_ctime\fR and \fBst_mtime\fR fields of the directory that contains the new entry are marked for update. .SH RETURN VALUES .LP Upon successful completion, \fB0\fR is returned. Otherwise, \fB\(mi1\fR is returned, no directory is created, and \fBerrno\fR is set to indicate the error. .SH ERRORS .LP The \fBmkdir()\fR and \fBmkdirat()\fR functions will fail if: .sp .ne 2 .na \fB\fBEACCES\fR\fR .ad .RS 16n 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. .RE .sp .ne 2 .na \fB\fBEDQUOT\fR\fR .ad .RS 16n 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. .RE .sp .ne 2 .na \fB\fBEEXIST\fR\fR .ad .RS 16n The named file already exists. .RE .sp .ne 2 .na \fB\fBEFAULT\fR\fR .ad .RS 16n The \fIpath\fR argument points to an illegal address. .RE .sp .ne 2 .na \fB\fBEINVAL\fR\fR .ad .RS 16n An attempt was made to create an extended attribute that is a directory. .RE .sp .ne 2 .na \fB\fBEIO\fR\fR .ad .RS 16n An I/O error has occurred while accessing the file system. .RE .sp .ne 2 .na \fB\fBEILSEQ\fR\fR .ad .RS 16n The path argument includes non-UTF8 characters and the file system accepts only file names where all characters are part of the UTF-8 character codeset. .RE .sp .ne 2 .na \fB\fBELOOP\fR\fR .ad .RS 16n Too many symbolic links were encountered in translating \fIpath\fR, or a loop exists in symbolic links encountered during resolution of \fIpath\fR .RE .sp .ne 2 .na \fB\fBEMLINK\fR\fR .ad .RS 16n The maximum number of links to the parent directory would be exceeded. .RE .sp .ne 2 .na \fB\fBENAMETOOLONG\fR\fR .ad .RS 16n The length of the \fIpath\fR argument exceeds \fBPATH_MAX\fR, or the length of a \fIpath\fR component exceeds \fBNAME_MAX\fR while \fB_POSIX_NO_TRUNC\fR is in effect. .RE .sp .ne 2 .na \fB\fBENOENT\fR\fR .ad .RS 16n A component of the path prefix does not exist or is a null pathname. .RE .sp .ne 2 .na \fB\fBENOLINK\fR\fR .ad .RS 16n The \fIpath\fR argument points to a remote machine and the link to that machine is no longer active. .RE .sp .ne 2 .na \fB\fBENOSPC\fR\fR .ad .RS 16n No free space is available on the device containing the directory. .RE .sp .ne 2 .na \fB\fBENOTDIR\fR\fR .ad .RS 16n A component of the path prefix is not a directory. For \fBlinkat()\fR, if \fIpath\fR is a relative path and \fIfd\fR refers to a valid file descriptor which is not a directory. .RE .sp .ne 2 .na \fB\fBEROFS\fR\fR .ad .RS 16n The path prefix resides on a read-only file system. .RE .sp .LP The \fBmkdirat()\fR function will fail if: .sp .ne 2 .na .B EBADF .ad .RS 16n The path \fIpath\fR is a relative path and \fIfd\fR is not a valid open file descriptor or the value \fBAT_FDCWD\fR. .RE .sp .LP The \fBmkdir()\fR function may fail if: .sp .ne 2 .na \fB\fBENAMETOOLONG\fR\fR .ad .RS 16n As a result of encountering a symbolic link in resolution of the \fIpath\fR argument, the length of the substituted pathname string exceeded {\fBPATH_MAX\fR}. .RE .SH EXAMPLES .LP \fBExample 1 \fRCreate a directory. .sp .LP The following example demonstrates how to create a directory named \fB/home/cnd/mod1\fR, with read, write, and search permissions for owner and group, and with read and search permissions for others. .sp .in +2 .nf #include #include int status; \&... status = mkdir("/home/cnd/mod1", S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH); .fi .in -2 .SH ATTRIBUTES .LP See \fBattributes\fR(5) for descriptions of the following attributes: .sp .sp .TS box; c | c l | l . ATTRIBUTE TYPE ATTRIBUTE VALUE _ Interface Stability Standard _ MT-Level Async-Signal-Safe .TE .SH SEE ALSO .LP \fBchmod\fR(2), \fBmknod\fR(2), \fBumask\fR(2), \fBmkdirp\fR(3GEN), \fBstat.h\fR(3HEAD), \fBattributes\fR(5), \fBstandards\fR(5)