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On some systems (linux 2.6.8) AFS fails to set d_reclen to 0 or does 

not support VFAT_IOCTL_READDIR_BOTH but returns 0 (success) anyway. So
set d_reclen to 65535 (an impossible value) before the ioctl() and
check it afterwards to work around this bug.
This commit is contained in:
Francois Gouget 2005-05-30 11:33:42 +00:00 committed by Alexandre Julliard
parent b075f03acb
commit 883413faf6
1 changed files with 10 additions and 1 deletions
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11
dlls/ntdll/directory.c
View File

@ -831,8 +831,11 @@ static int read_directory_vfat( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG
{
off_t old_pos = lseek( fd, 0, SEEK_CUR );
/* Set d_reclen to 65535 to work around an AFS kernel bug */
de[0].d_reclen = 65535;
res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
if (res == -1 && errno != ENOENT) return -1; /* VFAT ioctl probably not supported */
if (!res && de[0].d_reclen == 65535) return -1; /* AFS bug */
while (res != -1)
{
@ -859,8 +862,11 @@ static int read_directory_vfat( int fd, IO_STATUS_BLOCK *io, void *buffer, ULONG
}
else /* we'll only return full entries, no need to worry about overflow */
{
/* Set d_reclen to 65535 to work around an AFS kernel bug */
de[0].d_reclen = 65535;
res = ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de );
if (res == -1 && errno != ENOENT) return -1; /* VFAT ioctl probably not supported */
if (!res && de[0].d_reclen == 65535) return -1; /* AFS bug */
while (res != -1)
{
@ -1161,7 +1167,10 @@ static NTSTATUS find_file_in_dir( char *unix_name, int pos, const WCHAR *name, i
{
KERNEL_DIRENT de[2];
if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) != -1)
/* Set d_reclen to 65535 to work around an AFS kernel bug */
de[0].d_reclen = 65535;
if (ioctl( fd, VFAT_IOCTL_READDIR_BOTH, (long)de ) != -1 &&
de[0].d_reclen != 65535)
{
unix_name[pos - 1] = '/';
for (;;)