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rmdir(2) [sunos man page]

rmdir(2)							   System Calls 							  rmdir(2)

NAME
rmdir - remove a directory SYNOPSIS
#include <unistd.h> int rmdir(const char *path); DESCRIPTION
The rmdir() function removes the directory named by the path name pointed to by path. The directory must not have any entries other than "." and "..". If the directory's link count becomes zero and no process has the directory open, the space occupied by the directory is freed and the directory is no longer accessible. If one or more processes have the directory open when the last link is removed, the "." and ".." entries, if present, are removed before rmdir() returns and no new entries may be created in the directory, but the directory is not removed until all references to the directory have been closed. Upon successful completion rmdir() marks for update the st_ctime and st_mtime fields of the parent directory. RETURN VALUES
Upon successful completion, 0 is returned. Otherwise, -1 is returned, errno is set to indicate the error, and the named directory is not changed. ERRORS
The rmdir() function will fail if: EACCES Search permission is denied for a component of the path prefix and {PRIV_FILE_DAC_SEARCH} is not asserted in the effective set of the calling process Write permission is denied on the directory containing the directory to be removed and {PRIV_FILE_DAC_WRITE} is not asserted. The parent directory has the S_ISVTX variable set, is not owned by the user, and {PRIV_FILE_OWNER} is not asserted. The directory is not owned by the user and is not writable by the user. EBUSY The directory to be removed is the mount point for a mounted file system. EEXIST The directory contains entries other than those for "." and "..". EFAULT The path argument points to an illegal address. EINVAL The directory to be removed is the current directory, or the final component of path is ".". EIO An I/O error occurred while accessing the file system. ELOOP Too many symbolic links were encountered in translating path. ENAMETOOLONG The length of the path argument exceeds PATH_MAX, or the length of a path component exceeds NAME_MAX while _POSIX_NO_TRUNC is in effect. ENOENT The named directory does not exist or is the null pathname. ENOLINK The path argument points to a remote machine, and the connection to that machine is no longer active. ENOTDIR A component of the path prefix is not a directory. EROFS The directory entry to be removed is part of a read-only file system. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |Async-Signal-Safe | +-----------------------------+-----------------------------+ SEE ALSO
mkdir(1), rm(1), mkdir(2), attributes(5), privileges(5), standards(5) SunOS 5.10 28 Dec 1996 rmdir(2)

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unlink(2)							   System Calls 							 unlink(2)

NAME
unlink, unlinkat - remove directory entry SYNOPSIS
#include <unistd.h> int unlink(const char *path); int unlinkat(int dirfd, const char *path, int flag); DESCRIPTION
The unlink() function removes a link to a file. If path names a symbolic link, unlink() removes the symbolic link named by path and does not affect any file or directory named by the contents of the symbolic link. Otherwise, unlink() removes the link named by the pathname pointed to by path and decrements the link count of the file referenced by the link. The unlinkat() function also removes a link to a file. See fsattr(5). If the flag argument is 0, the behavior of unlinkat() is the same as unlink() except in the processing of its path argument. If path is absolute, unlinkat() behaves the same as unlink() and the dirfd argument is unused. If path is relative and dirfd has the value AT_FDCWD, defined in <fcntl.h>, unlinkat() also behaves the same as unlink(). Other- wise, path is resolved relative to the directory referenced by the dirfd argument. If the flag argument is set to the value AT_REMOVEDIR, defined in <fcntl.h>, unlinkat() behaves the same as rmdir(2) except in the process- ing of the path argument as described above. When the file's link count becomes 0 and no process has the file open, the space occupied by the file will be freed and the file is no longer accessible. If one or more processes have the file open when the last link is removed, the link is removed before unlink() or unlinkat() returns, but the removal of the file contents is postponed until all references to the file are closed. The path argument must not name a directory unless the process has appropriate privileges and the implementation supports using unlink() and unlinkat() on directories. Upon successful completion, unlink() and unlinkat() will mark for update the st_ctime and st_mtime fields of the parent directory. If the file's link count is not 0, the st_ctime field of the file will be marked for update. RETURN VALUES
Upon successful completion, 0 is returned. Otherwise, -1 is returned, errno is set to indicate the error, and the file is not unlinked. ERRORS
The unlink() and unlinkat() functions will fail if: EACCES Search permission is denied for a component of the path prefix, or write permission is denied on the directory containing the link to be removed. EACCES The parent directory has the sticky bit set and the file is not writable by the user, the user does not own the parent directory, the user does not own the file, and the user is not a privileged user. EBUSY The entry to be unlinked is the mount point for a mounted file system. EFAULT The path argument points to an illegal address. EINTR A signal was caught during the execution of the unlink() function. ELOOP Too many symbolic links were encountered in translating path. ENAMETOOLONG The length of the path argument exceeds PATH_MAX, or the length of a path component exceeds NAME_MAX while _POSIX_NO_TRUNC is in effect. ENOENT The named file does not exist or is a null pathname. ENOLINK The path argument points to a remote machine and the link to that machine is no longer active. ENOTDIR A component of the path prefix is not a directory or the provided directory descriptor for unlinkat() is not AT_FDCWD or does not reference a directory. EPERM The named file is a directory and {PRIV_SYS_LINKDIR} is not asserted in the effective set of the calling process. EROFS The directory entry to be unlinked is part of a read-only file system. The unlink() and unlinkat() functions may fail if: ENAMETOOLONG Pathname resolution of a symbolic link produced an intermediate result whose length exceeds {PATH_MAX}. ETXTBSY The entry to be unlinked is the last directory entry to a pure procedure (shared text) file that is being executed. USAGE
Applications should use rmdir(2) to remove a directory. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |unlink() is Standard; | | |unlinkat() is Evolving | +-----------------------------+-----------------------------+ |MT-Level |Async-Signal-Safe | +-----------------------------+-----------------------------+ SEE ALSO
rm(1), close(2), link(2), open(2), rmdir(2), remove(3C), attributes(5), privileges(5), fsattr(5) SunOS 5.10 1 Feb 2003 unlink(2)
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