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ntdll: Ignore some system directories in NtQueryDirectoryFile to avoid recursion troubles.

This commit is contained in:
Alexandre Julliard 2008-10-28 13:55:24 +01:00
parent 56788cc5b6
commit f0fed2831a
1 changed files with 45 additions and 0 deletions
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45
dlls/ntdll/directory.c
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@ -23,6 +23,7 @@
#include "config.h"
#include "wine/port.h"
#include <assert.h>
#include <sys/types.h>
#ifdef HAVE_DIRENT_H
# include <dirent.h>
@ -136,6 +137,15 @@ static inline int getdents64( int fd, char *de, unsigned int size )
#define MAX_DIR_ENTRY_LEN 255 /* max length of a directory entry in chars */
#define MAX_IGNORED_FILES 4
static struct
{
dev_t dev;
ino_t ino;
} ignored_files[MAX_IGNORED_FILES];
static int ignored_files_count;
static const unsigned int max_dir_info_size = FIELD_OFFSET( FILE_BOTH_DIR_INFORMATION, FileName[MAX_DIR_ENTRY_LEN] );
static int show_dot_files = -1;
@ -172,6 +182,28 @@ static inline int is_valid_mounted_device( const struct stat *st )
#endif
}
static inline void ignore_file( const char *name )
{
struct stat st;
assert( ignored_files_count < MAX_IGNORED_FILES );
if (!stat( name, &st ))
{
ignored_files[ignored_files_count].dev = st.st_dev;
ignored_files[ignored_files_count].ino = st.st_ino;
ignored_files_count++;
}
}
static inline BOOL is_ignored_file( const struct stat *st )
{
unsigned int i;
for (i = 0; i < ignored_files_count; i++)
if (ignored_files[i].dev == st->st_dev && ignored_files[i].ino == st->st_ino)
return TRUE;
return FALSE;
}
/***********************************************************************
* get_default_com_device
*
@ -694,6 +726,14 @@ static void init_options(void)
NtClose( hkey );
}
NtClose( root );
/* a couple of directories that we don't want to return in directory searches */
ignore_file( wine_get_config_dir() );
ignore_file( "/dev" );
ignore_file( "/proc" );
#ifdef linux
ignore_file( "/sys" );
#endif
}
@ -929,6 +969,11 @@ static FILE_BOTH_DIR_INFORMATION *append_entry( void *info_ptr, ULONG_PTR *pos,
if (stat( long_name, &st ) == -1) return NULL;
if (S_ISDIR( st.st_mode )) info->FileAttributes |= FILE_ATTRIBUTE_REPARSE_POINT;
}
if (is_ignored_file( &st ))
{
TRACE( "ignoring file %s\n", long_name );
return NULL;
}
info->NextEntryOffset = total_len;
info->FileIndex = 0; /* NTFS always has 0 here, so let's not bother with it */