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- File descriptors produced by dup() or dup2() now work exactly like

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the original file descriptors they are duplicates of. I modified the
  function which maps file descriptor numbers to file descriptor
  table entries to return the table entries of the original files.

- In the thread-safe library, duplicated stdin/stdout/stderr
  descriptors now work like the "real" ones. This is true even if
  the "real" ones were closed and only their former aliases remain.


git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14909 87f5fb63-7c3d-0410-a384-fd976d0f7a62
This commit is contained in:
Olaf Barthel
2005-04-01 18:46:37 +00:00
parent 09b52e077f
commit 6f010ddf87
19 changed files with 155 additions and 95 deletions
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12
library/stdio_remove_fd_alias.c
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@ -1,5 +1,5 @@
/*
* $Id: stdio_remove_fd_alias.c,v 1.2 2005-02-28 13:22:53 obarthel Exp $
* $Id: stdio_remove_fd_alias.c,v 1.3 2005-04-01 18:46:37 obarthel Exp $
*
* :ts=4
*
@ -66,14 +66,22 @@ __remove_fd_alias(struct fd * fd)
else if (fd->fd_NextLink != NULL) /* this one has aliases attached; it is the 'original' resource */
{
struct fd * first_alias;
struct fd * next_alias;
struct fd * list_fd;
/* The first link now becomes the original resource */
first_alias = fd->fd_NextLink;
next_alias = first_alias->fd_NextLink;
/* Structure copy... */
(*first_alias) = (*fd);
/* Fix up the linkage. */
first_alias->fd_NextLink = next_alias;
first_alias->fd_Original = NULL;
/* The resources are migrated to the first link. */
for(list_fd = first_alias->fd_NextLink ;
for(list_fd = next_alias ;
list_fd != NULL ;
list_fd = list_fd->fd_NextLink)
{