[Overview][Constants][Types][Procedures and functions][Variables] |
Create a symbolic link
Source position: oldlinux.pp line 1390
function SymLink( |
OldPath: PathStr; |
NewPath: PathStr |
):Boolean; |
SymLinkmakes Newpathpoint to the file in OldPath, which doesn't necessarily exist. The two files DO NOT have the same inode number. This is known as a 'soft' link.
The permissions of the link are irrelevant, as they are not used when following the link. Ownership of the file is only checked in case of removal or renaming of the link.
The function returns Trueif the call was succesfull, Falseif the call failed.
Errors are returned in LinuxError.
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Create a hard link to a file |
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Unlink (i.e. remove) a file. |
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Read destination of symbolic link |
Program Example22; { Program to demonstrate the SymLink and UnLink functions. } Uses oldlinux; Var F : Text; S : String; begin Assign (F,'test.txt'); Rewrite (F); Writeln (F,'This is written to test.txt'); Close(f); { new.txt and test.txt are now the same file } if not SymLink ('test.txt','new.txt') then writeln ('Error when symlinking !'); { Removing test.txt still leaves new.txt Pointing now to a non-existent file ! } If not Unlink ('test.txt') then Writeln ('Error when unlinking !'); Assign (f,'new.txt'); { This should fail, since the symbolic link points to a non-existent file! } {$i-} Reset (F); {$i+} If IOResult=0 then Writeln ('This shouldn''t happen'); { Now remove new.txt also } If not Unlink ('new.txt') then Writeln ('Error when unlinking !'); end.