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- Changed how error conditions raised by dos.library file I/O functions

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are detected.

- Modified function return values of 0 and -1 to use macros like OK,
  ERROR/SEEK_ERROR instead, to better convey what the purpose of these
  values is.


git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14922 87f5fb63-7c3d-0410-a384-fd976d0f7a62
This commit is contained in:
Olaf Barthel
2005-04-24 08:46:37 +00:00
parent a50aba0b64
commit 1d611fefbe
134 changed files with 377 additions and 376 deletions
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16
library/unistd_ftruncate.c
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@@ -1,5 +1,5 @@
/*
* $Id: unistd_ftruncate.c,v 1.10 2005-04-01 18:46:37 obarthel Exp $
* $Id: unistd_ftruncate.c,v 1.11 2005-04-24 08:46:37 obarthel Exp $
*
* :ts=4
*
@@ -45,7 +45,7 @@ int
ftruncate(int file_descriptor, off_t length)
{
D_S(struct FileInfoBlock,fib);
int result = -1;
int result = ERROR;
struct fd * fd = NULL;
BOOL restore_initial_position = FALSE;
off_t current_file_size;
@@ -122,12 +122,12 @@ ftruncate(int file_descriptor, off_t length)
if(initial_position < 0)
{
initial_position = Seek(fd->fd_DefaultFile,0,OFFSET_CURRENT);
if(initial_position < 0)
if(initial_position == SEEK_ERROR)
goto out;
}
/* Careful: seek to a position where the file can be safely truncated. */
if(Seek(fd->fd_DefaultFile,length,OFFSET_BEGINNING) < 0)
if(Seek(fd->fd_DefaultFile,length,OFFSET_BEGINNING) == SEEK_ERROR)
{
D(("could not move to file offset %ld",length));
@@ -135,7 +135,7 @@ ftruncate(int file_descriptor, off_t length)
goto out;
}
if(SetFileSize(fd->fd_DefaultFile,length,OFFSET_BEGINNING) < 0)
if(SetFileSize(fd->fd_DefaultFile,length,OFFSET_BEGINNING) == SEEK_ERROR)
{
D(("could not reduce file to size %ld",length));
@@ -163,12 +163,12 @@ ftruncate(int file_descriptor, off_t length)
if(initial_position < 0)
{
initial_position = Seek(fd->fd_DefaultFile,0,OFFSET_CURRENT);
if(initial_position < 0)
if(initial_position == SEEK_ERROR)
goto out;
}
/* Move to what should be the end of the file. */
if(Seek(fd->fd_DefaultFile,current_file_size,OFFSET_BEGINNING) < 0)
if(Seek(fd->fd_DefaultFile,current_file_size,OFFSET_BEGINNING) == SEEK_ERROR)
{
D(("could not move to file offset %ld",current_file_size));
@@ -189,7 +189,7 @@ ftruncate(int file_descriptor, off_t length)
restore_initial_position = TRUE;
}
result = 0;
result = OK;
out: