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28 .\" @(#)mkdir.2 8.2 (Berkeley) 12/11/93
29 .\" $FreeBSD: src/lib/libc/sys/mkdir.2,v 1.28 2008/06/30 08:46:09 danger Exp $
37 .Nd make a directory file
43 .Fn mkdir "const char *path" "mode_t mode"
45 .Fn mkdirat "int fd" "const char *path" "mode_t mode"
49 is created with the access permissions specified by
53 of the calling process.
55 The directory's owner ID is set to the process's effective user ID.
56 The directory's group ID is set to that of the parent directory in
61 system call is equivalent to
63 except in the case where
65 specifies a relative path.
66 In this case the newly created directory is created relative to the
67 directory associated with the file descriptor
69 instead of the current working directory.
72 is passed the special value
76 parameter, the current working directory is used and the behavior is
77 identical to a call to
85 will fail and no directory will be created if:
88 A component of the path prefix is not a directory.
89 .It Bq Er ENAMETOOLONG
90 A component of a pathname exceeded 255 characters,
91 or an entire path name exceeded 1023 characters.
93 A component of the path prefix does not exist.
95 Search permission is denied for a component of the path prefix,
96 or write permission is denied
97 on the parent directory of the directory to be created.
99 Too many symbolic links were encountered in translating the pathname.
101 The parent directory of the directory to be created has its immutable flag set,
104 manual page for more information.
106 The named directory would reside on a read-only file system.
108 The new directory cannot be created because the parent directory contains
109 too many subdirectories.
111 The named file exists.
113 The new directory cannot be created because there is no space left
114 on the file system that will contain the directory.
116 There are no free inodes on the file system on which the
117 directory is being created.
119 The new directory cannot be created because the user's
120 quota of disk blocks on the file system that will
121 contain the directory has been exhausted.
123 The user's quota of inodes on the file system on
124 which the directory is being created has been exhausted.
126 An I/O error occurred while making the directory entry or allocating the inode.
128 An I/O error occurred while reading from or writing to the file system.
133 points outside the process's allocated address space.
136 In addition to the errors returned by the
145 argument does not specify an absolute path and the
149 nor a valid file descriptor open for searching.
153 argument is not an absolute path and
157 nor a file descriptor associated with a directory.
167 system call is expected to conform to
171 system call follows The Open Group Extended API Set 2 specification.
175 system call appeared in