Unix/Linux系統調用
accept()函數 Unix/Linux
access()函數 Unix/Linux
acct()函數 Unix/Linux
add_key()函數 Unix/Linux
adjtimex()函數 Unix/Linux
afs_syscall()函數 Unix/Linux
alarm()函數 Unix/Linux
alloc_hugepages()函數 Unix/Linux
arch_prctl()函數 Unix/Linux
bdflush()函數 Unix/Linux
bind()函數 Unix/Linux
break未實現 Unix/Linux
brk()函數 Unix/Linux
cacheflush()函數 Unix/Linux
chdir()函數 Unix/Linux
chmod()函數 Unix/Linux
chown()函數 Unix/Linux
chroot()函數 Unix/Linux
clone()函數 Unix/Linux
close()函數 Unix/Linux
connect()函數 Unix/Linux
create_module()函數 Unix/Linux
open()函數 Unix/Linux
dup2()函數 Unix/Linux
dup()函數 Unix/Linux
epoll_create()函數 Unix/Linux
epoll_ctl()函數 Unix/Linux
epoll_wait()函數 Unix/Linux
execve()函數 Unix/Linux
exit_group函數 Unix/Linux
_exit()函數 Unix/Linux
exit()函數 Unix/Linux
faccessat()函數 Unix/Linux
fattach()函數 Unix/Linux
fchdir()函數 Unix/Linux
fchmodat()函數 Unix/Linux
fchmod()函數 Unix/Linux
fchownat()函數 Unix/Linux
fchown()函數 Unix/Linux
fcntl()函數 Unix/Linux
fdatasync()函數 Unix/Linux
fdetach()函數 Unix/Linux
flock()函數 Unix/Linux
fork()函數 Unix/Linux
alloc_hugepages()函數 Unix/Linux
fstatat()函數 Unix/Linux
statfs()函數 Unix/Linux
stat()函數 Unix/Linux
statvfs()函數 Unix/Linux
fsync()函數 Unix/Linux
truncate()函數 Unix/Linux
futex()函數 Unix/Linux
futimesat()函數 Unix/Linux
getcontext()函數 Unix/Linux
getcwd()函數 Unix/Linux
getdents()函數 Unix/Linux
getdomainname()函數 Unix/Linux
getdtablesize()函數 Unix/Linux
getgid()函數 Unix/Linux
getuid()函數 Unix/Linux
getgroups()函數 Unix/Linux
getgroups()函數 Unix/Linux
gethostname()函數 Unix/Linux
getitimer()函數 Unix/Linux
get_kernel_syms()函數 Unix/Linux
unimplemented()函數 Unix/Linux
getpagesize()函數 Unix/Linux
getpeername()函數 Unix/Linux
setpgid()函數 Unix/Linux
getpgrp()函數 Unix/Linux
getpid()函數 Unix/Linux
getpmsg()函數 Unix/Linux
getppid()函數 Unix/Linux
getpriority()函數 Unix/Linux
getresuid()函數 Unix/Linux
getrlimit()函數 Unix/Linux
get_robust_list()函數 Unix/Linux
getrusage()函數 Unix/Linux
getsid()函數 Unix/Linux
getsockname()函數 Unix/Linux
getsockopt()函數 Unix/Linux
get_thread_area()函數 Unix/Linux
gettid()函數 Unix/Linux
gettimeofday()函數 Unix/Linux
getuid()函數 Unix/Linux
getunwind()函數 Unix/Linux
gtty()函數 Unix/Linux
idle()函數 Unix/Linux
outb()函數 Unix/Linux
inb_p()函數 Unix/Linux
inl()函數 Unix/Linux
inl_p()函數 Unix/Linux
inotify_add_watch()函數 Unix/Linux
inotify_init()函數 Unix/Linux
inotify_rm_watch()函數 Unix/Linux
outb()函數 Unix/Linux
insl()函數 Unix/Linux
insw()函數 Unix/Linux
intro()函數 Unix/Linux
inw()函數 Unix/Linux
inw_p()函數 Unix/Linux
io_cancel()函數 Unix/Linux
ioctl()函數 Unix/Linux
ioctl_list()函數 Unix/Linux
io_destroy()函數 Unix/Linux
io_getevents()函數 Unix/Linux
ioperm()函數 Unix/Linux
iopl()函數 Unix/Linux
ioprio_set()函數 Unix/Linux
io_setup()函數 Unix/Linux
io_submit()函數 Unix/Linux
ipc()函數 Unix/Linux
isastream()函數 Unix/Linux
kexec_load()函數 Unix/Linux
keyctl()函數 Unix/Linux
kill()函數 Unix/Linux
killpg()函數 Unix/Linux
lchown()函數 Unix/Linux
linkat()函數 Unix/Linux
link()函數 Unix/Linux
listen()函數 Unix/Linux
_llseek()函數 Unix/Linux
llseek()函數 Unix/Linux
lock()函數 Unix/Linux
lookup_dcookie()函數 Unix/Linux
lseek()函數 Unix/Linux
lstat()函數 Unix/Linux
madvise()函數 Unix/Linux
mincore()函數 Unix/Linux
mkdirat()函數 Unix/Linux
mkdir()函數 Unix/Linux
mknod()函數 Unix/Linux
mlockall()函數 Unix/Linux
mlock()函數 Unix/Linux
mmap2()函數 Unix/Linux
mmap()函數 Unix/Linux
modify_ldt()函數 Unix/Linux
mount()函數 Unix/Linux
move_pages()函數 Unix/Linux
mprotect()函數 Unix/Linux
mpx()函數 Unix/Linux
mq_getsetattr()函數 Unix/Linux
mremap()函數 Unix/Linux
msgctl()函數 Unix/Linux
msgget()函數 Unix/Linux
msgop()函數 Unix/Linux
msgsnd()函數 Unix/Linux
msync()函數 Unix/Linux
multiplexer()函數 Unix/Linux
munlockall()函數 Unix/Linux
munlock()函數 Unix/Linux
munmap()函數 Unix/Linux
nanosleep()函數 Unix/Linux
_newselect()函數 Unix/Linux
nfsservctl()函數 Unix/Linux
nice()函數 Unix/Linux
obsolete()函數 Unix/Linux
oldfstat()函數 Unix/Linux
oldlstat()函數 Unix/Linux
oldolduname()函數 Unix/Linux
oldstat()函數 Unix/Linux
olduname()函數 Unix/Linux
openat()函數 Unix/Linux
open()函數 Unix/Linux
outb()函數 Unix/Linux
outb_p()函數 Unix/Linux
outsb()函數 Unix/Linux
outsl()函數 Unix/Linux
outsw()函數 Unix/Linux
outw()函數 Unix/Linux
outw_p()函數 Unix/Linux
path_resolution()函數 Unix/Linux
pause()函數 Unix/Linux
perfmonctl()函數 Unix/Linux
personality()函數 Unix/Linux
pipe()函數 Unix/Linux
pivot_root()函數 Unix/Linux
poll()函數 Unix/Linux
posix_fadvise()函數 Unix/Linux
ppoll()函數 Unix/Linux
prctl()函數 Unix/Linux
pread()函數 Unix/Linux
prof()函數 Unix/Linux
pselect()函數 Unix/Linux
ptrace()函數 Unix/Linux
putmsg()函數 Unix/Linux
putpmsg()函數 Unix/Linux
pwrite()函數 Unix/Linux
query_module()函數 Unix/Linux
quotactl()函數 Unix/Linux
readahead()函數 Unix/Linux
readdir()函數 Unix/Linux
read()函數 Unix/Linux
readlinkat()函數 Unix/Linux
readlink()函數 Unix/Linux
readv()函數 Unix/Linux
reboot()函數 Unix/Linux
recvfrom()函數 Unix/Linux
recv()函數 Unix/Linux
recvmsg()函數 Unix/Linux
remap_file_pages()函數 Unix/Linux
renameat()函數 Unix/Linux
rename()函數 Unix/Linux
request_key()函數 Unix/Linux
rmdir()函數 Unix/Linux
sbrk()函數 Unix/Linux
sched_setaffinity()函數 Unix/Linux
sched_getparam()函數 Unix/Linux
sched_get_priority_max()函數 Unix/Linux
sched_get_priority_min()函數 Unix/Linux
sched_setscheduler()函數 Unix/Linux
sched_rr_get_interval()函數 Unix/Linux
sched_setparam()函數 Unix/Linux
sched_yield()函數 Unix/Linux
security()函數 Unix/Linux
select()函數 Unix/Linux
select_tut()函數 Unix/Linux
semctl()函數 Unix/Linux

mknod()函數 Unix/Linux

mknod - 創建一個特殊的文件或普通文件

內容簡介

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>

int mknod(const char **pathname*, mode_t mode**, dev_t** dev**);**

描述

The system call  mknod () creates a filesystem node (file, device special file or named pipe) named  pathname , with attributes specified by  mode  and  dev .

The mode argument specifies both the permissions to use and the type of node to be created. It should be a combination (using bitwise OR) of one of the file types listed below and the permissions for the new node.

The permissions are modified by the process’s umask in the usual way: the permissions of the created node are (mode & ~umask).

The file type must be one of S_IFREGS_IFCHRS_IFBLKS_IFIFO or S_IFSOCK to specify a normal file (which will be created empty), character special file, block special file, FIFO (named pipe), or Unix domain socket, respectively. (Zero file type is equivalent to type S_IFREG.)

If the file type is S_IFCHR or S_IFBLK then dev specifies the major and minor numbers of the newly created device special file; otherwise it is ignored.

If pathname already exists, or is a symbolic link, this call fails with an EEXIST error.

The newly created node will be owned by the effective user ID of the process. If the directory containing the node has the set-group-ID bit set, or if the filesystem is mounted with BSD group semantics, the new node will inherit the group ownership from its parent directory; otherwise it will be owned by the effective group ID of the process.

返回值

mknod () returns zero on success, or -1 if an error occurred (in which case,  errno  is set appropriately).

錯誤

標籤

描述

EACCES

The parent directory does not allow write permission to the process, or one of the directories in the path prefix of pathnamedid not allow search permission. (See also path_resolution(2).)

EEXIST

pathname already exists.

EFAULT

pathname points outside your accessible address space.

EINVAL

mode requested creation of something other than a normal file, device special file, FIFO or socket.

ELOOP

Too many symbolic links were encountered in resolvingpathname.

ENAMETOOLONG

 

pathname was too long.

ENOENT

A directory component in pathname does not exist or is a dangling symbolic link.

ENOMEM

Insufficient kernel memory was available.

ENOSPC

The device containing pathname has no room for the new node.

ENOTDIR

 

A component used as a directory in pathname is not, in fact, a directory.

EPERM

mode requested creation of something other than a regular file, FIFO (named pipe), or Unix domain socket, and the caller is not privileged (Linux: does not have the CAP_MKNOD capability); also returned if the filesystem containing pathname does not support the type of node requested.

EROFS

pathname refers to a file on a read-only filesystem.

遵循於

SVr4, 4.4BSD, POSIX.1-2001 (but see below).

注意

POSIX.1-2001 says: "The only portable use of  mknod () is to create a FIFO-special file. If mode  is not S_IFIFO or  dev  is not 0, the behavior of  mknod () is unspecified."

Under Linux, this call cannot be used to create directories. One should make directories with mkdir(2), and FIFOs with mkfifo(2).

There are many infelicities in the protocol underlying NFS. Some of these affect mknod().

另請參閱

  • fcntl (2)

  • mkdir (2)

  • mknodat (2)

  • mount (2)

  • path_resolution (2)

  • socket (2)

  • stat (2)

  • umask (2)

  • unlink (2)