ftruncate man page on Ultrix

Man page or keyword search:  
man Server   3690 pages
apropos Keyword Search (all sections)
Output format
Ultrix logo
[printable version]

truncate(2)							   truncate(2)

Name
       truncate, ftruncate - truncate a file to a specified length

Syntax
       truncate(path, length)
       char *path;
       int length;

       ftruncate(fd, length)
       int fd, length;

Description
       The system call causes the file named by path or referenced by fd to be
       truncated to, at most, length bytes in size.  If	 the  file  previously
       was  larger than this size, the extra data is lost.  With the file must
       be open for writing.

Return Values
       A value of zero (0) is returned if the  call  succeeds.	 If  the  call
       fails,  a  -1  is returned, and the global variable errno specifies the
       error.

Restrictions
       Partial blocks discarded as the result  of  truncation  are  not	 zero-
       filled. This can result in holes in files that do not read as zero.

Diagnostics
       The system call succeeds unless:

       [ENOTDIR]      A component of the path prefix is not a directory.

       [ENOENT]	      The named file does not exist.

       [EACCES]	      Search  permission is denied for a component of the path
		      prefix.

       [EISDIR]	      The named file is a directory.

       [EROFS]	      The named file resides on a read-only file system.

       [ETXTBSY]      The file is a pure procedure (shared text) file that  is
		      being executed.

       [EFAULT]	      The  path points outside the process's allocated address
		      space.

       [ENAMETOOLONG] A component of a pathname exceeded 255 characters, or an
		      entire path name exceeded 1023 characters.

       [ELOOP]	      Too  many symbolic links were encountered in translating
		      the pathname.

       [EIO]	      An I/O error occurred updating the inode.

       The system call succeeds unless:

       [EBADF]	      The fd is not a valid descriptor.

       [EINVAL]	      The fd references a socket, not a file.

       [ETIMEDOUT]    A connect	 request  or  remote  file  operation  failed,
		      because  the  connected  party  did not properly respond
		      after a period of time that is dependent on the communi‚Äź
		      cations protocol.

See Also
       open(2)

								   truncate(2)
[top]

List of man pages available for Ultrix

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
...................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net