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28 .\" @(#)mkdir.2 8.2 (Berkeley) 12/11/93
36 .Nd make a directory file
42 .Fn mkdir "const char *path" "mode_t mode"
44 .Fn mkdirat "int fd" "const char *path" "mode_t mode"
48 is created with the access permissions specified by
52 of the calling process.
54 The directory's owner ID is set to the process's effective user ID.
55 The directory's group ID is set to that of the parent directory in
60 system call is equivalent to
62 except in the case where
64 specifies a relative path.
65 In this case the newly created directory is created relative to the
66 directory associated with the file descriptor
68 instead of the current working directory.
71 is passed the special value
75 parameter, the current working directory is used and the behavior is
76 identical to a call to
84 will fail and no directory will be created if:
87 A component of the path prefix is not a directory.
88 .It Bq Er ENAMETOOLONG
89 A component of a pathname exceeded 255 characters,
90 or an entire path name exceeded 1023 characters.
92 A component of the path prefix does not exist.
94 Search permission is denied for a component of the path prefix,
95 or write permission is denied
96 on the parent directory of the directory to be created.
98 Too many symbolic links were encountered in translating the pathname.
100 The parent directory of the directory to be created has its immutable flag set,
103 manual page for more information.
105 The named directory would reside on a read-only file system.
107 The new directory cannot be created because the parent directory contains
108 too many subdirectories.
110 The named file exists.
112 The new directory cannot be created because there is no space left
113 on the file system that will contain the directory.
115 There are no free inodes on the file system on which the
116 directory is being created.
118 The new directory cannot be created because the user's
119 quota of disk blocks on the file system that will
120 contain the directory has been exhausted.
122 The user's quota of inodes on the file system on
123 which the directory is being created has been exhausted.
125 An I/O error occurred while making the directory entry or allocating the inode.
127 An I/O error occurred while reading from or writing to the file system.
129 Corrupted data was detected while reading from the file system.
134 points outside the process's allocated address space.
137 In addition to the errors returned by the
146 argument does not specify an absolute path and the
150 nor a valid file descriptor open for searching.
154 argument is not an absolute path and
158 nor a file descriptor associated with a directory.
168 system call is expected to conform to
172 system call follows The Open Group Extended API Set 2 specification.
176 system call appeared in
180 system call appeared in