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diff --git a/man2/mkdir.2 b/man2/mkdir.2 new file mode 100644 index 0000000..c3342bd --- /dev/null +++ b/man2/mkdir.2 @@ -0,0 +1,250 @@ +.\" This manpage is Copyright (C) 1992 Drew Eckhardt; +.\" and Copyright (C) 1993 Michael Haardt +.\" and Copyright (C) 1993,1994 Ian Jackson +.\" and Copyright (C) 2006, 2014 Michael Kerrisk +.\" +.\" SPDX-License-Identifier: GPL-1.0-or-later +.\" +.TH mkdir 2 2023-03-30 "Linux man-pages 6.05.01" +.SH NAME +mkdir, mkdirat \- create a directory +.SH LIBRARY +Standard C library +.RI ( libc ", " \-lc ) +.SH SYNOPSIS +.nf +.B #include <sys/stat.h> +.\" .B #include <unistd.h> +.PP +.BI "int mkdir(const char *" pathname ", mode_t " mode ); +.PP +.BR "#include <fcntl.h> " "/* Definition of AT_* constants */" +.B #include <sys/stat.h> +.PP +.BI "int mkdirat(int " dirfd ", const char *" pathname ", mode_t " mode ); +.fi +.PP +.RS -4 +Feature Test Macro Requirements for glibc (see +.BR feature_test_macros (7)): +.RE +.PP +.BR mkdirat (): +.nf + Since glibc 2.10: + _POSIX_C_SOURCE >= 200809L + Before glibc 2.10: + _ATFILE_SOURCE +.fi +.SH DESCRIPTION +.BR mkdir () +attempts to create a directory named +.IR pathname . +.PP +The argument +.I mode +specifies the mode for the new directory (see +.BR inode (7)). +It is modified by the process's +.I umask +in the usual way: in the absence of a default ACL, the mode of the +created directory is +.RI ( mode " & \[ti]" umask " & 0777)." +Whether other +.I mode +bits are honored for the created directory depends on the operating system. +For Linux, see NOTES below. +.PP +The newly created directory will be owned by the effective user ID 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 +.RI ( "mount \-o bsdgroups" +or, synonymously +.IR "mount \-o grpid" ), +the new directory will inherit the group ownership from its parent; +otherwise it will be owned by the effective group ID of the process. +.PP +If the parent directory has the set-group-ID bit set, then so will the +newly created directory. +.\" +.\" +.SS mkdirat() +The +.BR mkdirat () +system call operates in exactly the same way as +.BR mkdir (), +except for the differences described here. +.PP +If the pathname given in +.I pathname +is relative, then it is interpreted relative to the directory +referred to by the file descriptor +.I dirfd +(rather than relative to the current working directory of +the calling process, as is done by +.BR mkdir () +for a relative pathname). +.PP +If +.I pathname +is relative and +.I dirfd +is the special value +.BR AT_FDCWD , +then +.I pathname +is interpreted relative to the current working +directory of the calling process (like +.BR mkdir ()). +.PP +If +.I pathname +is absolute, then +.I dirfd +is ignored. +.PP +See +.BR openat (2) +for an explanation of the need for +.BR mkdirat (). +.SH RETURN VALUE +.BR mkdir () +and +.BR mkdirat () +return zero on success. +On error, \-1 is returned and +.I errno +is set to indicate the error. +.SH ERRORS +.TP +.B EACCES +The parent directory does not allow write permission to the process, +or one of the directories in +.I pathname +did not allow search permission. +(See also +.BR path_resolution (7).) +.TP +.B EBADF +.RB ( mkdirat ()) +.I pathname +is relative but +.I dirfd +is neither +.B AT_FDCWD +nor a valid file descriptor. +.TP +.B EDQUOT +The user's quota of disk blocks or inodes on the filesystem has been +exhausted. +.TP +.B EEXIST +.I pathname +already exists (not necessarily as a directory). +This includes the case where +.I pathname +is a symbolic link, dangling or not. +.TP +.B EFAULT +.IR pathname " points outside your accessible address space." +.TP +.B EINVAL +The final component ("basename") of the new directory's +.I pathname +is invalid +(e.g., it contains characters not permitted by the underlying filesystem). +.TP +.B ELOOP +Too many symbolic links were encountered in resolving +.IR pathname . +.TP +.B EMLINK +The number of links to the parent directory would exceed +.BR LINK_MAX . +.TP +.B ENAMETOOLONG +.IR pathname " was too long." +.TP +.B ENOENT +A directory component in +.I pathname +does not exist or is a dangling symbolic link. +.TP +.B ENOMEM +Insufficient kernel memory was available. +.TP +.B ENOSPC +The device containing +.I pathname +has no room for the new directory. +.TP +.B ENOSPC +The new directory cannot be created because the user's disk quota is +exhausted. +.TP +.B ENOTDIR +A component used as a directory in +.I pathname +is not, in fact, a directory. +.TP +.B ENOTDIR +.RB ( mkdirat ()) +.I pathname +is relative and +.I dirfd +is a file descriptor referring to a file other than a directory. +.TP +.B EPERM +The filesystem containing +.I pathname +does not support the creation of directories. +.TP +.B EROFS +.I pathname +refers to a file on a read-only filesystem. +.SH VERSIONS +Under Linux, apart from the permission bits, the +.B S_ISVTX +.I mode +bit is also honored. +.SS glibc notes +On older kernels where +.BR mkdirat () +is unavailable, the glibc wrapper function falls back to the use of +.BR mkdir (). +When +.I pathname +is a relative pathname, +glibc constructs a pathname based on the symbolic link in +.I /proc/self/fd +that corresponds to the +.I dirfd +argument. +.SH STANDARDS +POSIX.1-2008. +.SH HISTORY +.TP +.BR mkdir () +SVr4, BSD, POSIX.1-2001. +.\" SVr4 documents additional EIO, EMULTIHOP +.TP +.BR mkdirat () +Linux 2.6.16, +glibc 2.4. +.SH NOTES +There are many infelicities in the protocol underlying NFS. +Some of these affect +.BR mkdir (). +.SH SEE ALSO +.BR mkdir (1), +.BR chmod (2), +.BR chown (2), +.BR mknod (2), +.BR mount (2), +.BR rmdir (2), +.BR stat (2), +.BR umask (2), +.BR unlink (2), +.BR acl (5), +.BR path_resolution (7) |