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UNLINK.2
Upload User: jnzhq888
Upload Date: 2007-01-18
Package Size: 51694k
Code Size: 2k
Category:
OS Develop
Development Platform:
WINDOWS
- UNLINK(2) Minix Programmer's Manual UNLINK(2)
- NAME
- unlink - remove directory entry
- SYNOPSIS
- #include <unistd.h>
- int unlink(const char *path)
- DESCRIPTION
- Unlink removes the entry for the file path from its directory. If this
- entry was the last link to the file, and no process has the file open,
- then all resources associated with the file are reclaimed. If, however,
- the file was open in any process, the actual resource reclamation is
- delayed until it is closed, even though the directory entry has
- disappeared.
- RETURN VALUE
- Upon successful completion, a value of 0 is returned. Otherwise, a value
- of -1 is returned and errno is set to indicate the error.
- ERRORS
- The unlink succeeds unless:
- [ENOTDIR] A component of the path prefix is not a directory.
- [ENAMETOOLONG] The path name exceeds PATH_MAX characters.
- [ENOENT] The named file does not exist.
- [EACCES] Search permission is denied for a component of the path
- prefix.
- [EACCES] Write permission is denied on the directory containing the
- link to be removed.
- [ELOOP] Too many symbolic links were encountered in translating
- the pathname. (Minix-vmd)
- [EPERM] The named file is a directory.
- [EPERM] The directory containing the file is marked sticky, and
- neither the containing directory nor the file to be
- removed are owned by the effective user ID. (Minix-vmd)
- [EBUSY] The entry to be unlinked is the mount point for a mounted
- file system.
- [EIO] An I/O error occurred while deleting the directory entry
- or deallocating the inode.
- 4BSD May 22, 1985 1
- UNLINK(2) Minix Programmer's Manual UNLINK(2)
- [EROFS] The named file resides on a read-only file system.
- [EFAULT] Path points outside the process's allocated address space.
- SEE ALSO
- close(2), link(2), rmdir(2).
- 4BSD May 22, 1985 2