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kernel
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Fixed bug #1722: dir_close() was called for normal files (via map_cluster 

and find_fat_free). This completely messed up rwblock. Removed these calls
(for directories they are already covered at a higher level) and added
a few sanity checks to dir_close and dir_write.


git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@761 6ac86273-5f31-0410-b378-82cca8765d1b
This commit is contained in:
Bart Oldeman 2004-01-27 23:18:24 +00:00
parent d4f6a7104b
commit 5567aba08b
2 changed files with 6 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
kernel/fatdir.c
View File

@ -293,6 +293,9 @@ BOOL dir_write(REG f_node_ptr fnp)
struct buffer FAR *bp;
REG UWORD secsize = fnp->f_dpb->dpb_secsize;
if (!fnp->f_flags.f_ddir)
return FALSE;
/* Update the entry if it was modified by a write or create... */
if (fnp->f_flags.f_dmod)
{
@ -376,7 +379,7 @@ BOOL dir_write(REG f_node_ptr fnp)
VOID dir_close(REG f_node_ptr fnp)
{
/* Test for invalid f_nodes */
if (fnp == NULL)
if (fnp == NULL || !fnp->f_flags.f_ddir)
return;
#ifndef IPL

12
kernel/fatfs.c
View File

@ -1025,7 +1025,6 @@ STATIC CLUSTER find_fat_free(f_node_ptr fnp)
{
dpbp->dpb_xcluster = UNKNCLUSTER;
write_fsinfo(dpbp);
dir_close(fnp);
return LONG_LAST_CLUSTER;
}
if (dpbp->dpb_xnfreeclst != XUNKNCLSTFREE)
@ -1041,7 +1040,6 @@ STATIC CLUSTER find_fat_free(f_node_ptr fnp)
if (idx > dpbp->dpb_size)
{
dpbp->dpb_cluster = UNKNCLUSTER;
dir_close(fnp);
return LONG_LAST_CLUSTER;
}
@ -1395,14 +1393,8 @@ COUNT map_cluster(REG f_node_ptr fnp, COUNT mode)
return DE_SEEK;
/* expand the list if we're going to write and have run into */
/* the last cluster marker. */
if ((mode == XFR_WRITE) && (last_link(fnp)))
{
if (!extend(fnp))
{
dir_close(fnp);
return DE_HNDLDSKFULL;
}
}
if ((mode == XFR_WRITE) && last_link(fnp) && !extend(fnp))
return DE_HNDLDSKFULL;
if (fnp->f_cluster_offset == relcluster)
break;