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ntdll: Check for case-insensitive volumes.

This commit is contained in:
Charles Davis 2011-01-18 13:09:44 -07:00 committed by Alexandre Julliard
parent 1c25577873
commit 4e44e153c5
4 changed files with 255 additions and 0 deletions
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2
configure vendored
View File

@ -5849,6 +5849,7 @@ for ac_header in \
strings.h \
stropts.h \
sys/asoundlib.h \
sys/attr.h \
sys/cdio.h \
sys/elf32.h \
sys/epoll.h \
@ -12755,6 +12756,7 @@ for ac_func in \
ftruncate \
futimes \
futimesat \
getattrlist \
getdirentries \
getopt_long \
getpagesize \

2
configure.ac
View File

@ -456,6 +456,7 @@ AC_CHECK_HEADERS(\
strings.h \
stropts.h \
sys/asoundlib.h \
sys/attr.h \
sys/cdio.h \
sys/elf32.h \
sys/epoll.h \
@ -1909,6 +1910,7 @@ AC_CHECK_FUNCS(\
ftruncate \
futimes \
futimesat \
getattrlist \
getdirentries \
getopt_long \
getpagesize \

245
dlls/ntdll/directory.c
View File

@ -44,6 +44,9 @@
#ifdef HAVE_SYS_SYSCALL_H
# include <sys/syscall.h>
#endif
#ifdef HAVE_SYS_ATTR_H
#include <sys/attr.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
@ -59,6 +62,9 @@
#ifdef HAVE_SYS_MOUNT_H
#include <sys/mount.h>
#endif
#ifdef HAVE_SYS_STATFS_H
#include <sys/statfs.h>
#endif
#include <time.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
@ -774,6 +780,243 @@ static char *get_device_mount_point( dev_t dev )
}
#if defined(HAVE_GETATTRLIST) && defined(ATTR_VOL_CAPABILITIES) && \
defined(VOL_CAPABILITIES_FORMAT) && defined(VOL_CAP_FMT_CASE_SENSITIVE)
struct get_fsid
{
ULONG size;
dev_t dev;
fsid_t fsid;
};
struct fs_cache
{
dev_t dev;
fsid_t fsid;
BOOLEAN case_sensitive;
} fs_cache[64];
struct vol_caps
{
ULONG size;
vol_capabilities_attr_t caps;
};
/***********************************************************************
* look_up_fs_cache
*
* Checks if the specified file system is in the cache.
*/
static struct fs_cache *look_up_fs_cache( dev_t dev )
{
int i;
for (i = 0; i < sizeof(fs_cache)/sizeof(fs_cache[0]); i++)
if (fs_cache[i].dev == dev)
return fs_cache+i;
return NULL;
}
/***********************************************************************
* add_fs_cache
*
* Adds the specified file system to the cache.
*/
static void add_fs_cache( dev_t dev, fsid_t fsid, BOOLEAN case_sensitive )
{
int i;
struct fs_cache *entry = look_up_fs_cache( dev );
static int once = 0;
if (entry)
{
/* Update the cache */
entry->fsid = fsid;
entry->case_sensitive = case_sensitive;
return;
}
/* Add a new entry */
for (i = 0; i < sizeof(fs_cache)/sizeof(fs_cache[0]); i++)
if (fs_cache[i].dev == 0)
{
/* This entry is empty, use it */
fs_cache[i].dev = dev;
fs_cache[i].fsid = fsid;
fs_cache[i].case_sensitive = case_sensitive;
return;
}
/* Cache is out of space, warn */
if (once++)
WARN( "FS cache is out of space, expect performance problems\n" );
}
/***********************************************************************
* get_dir_case_sensitivity_attr
*
* Checks if the volume containing the specified directory is case
* sensitive or not. Uses getattrlist(2).
*/
static int get_dir_case_sensitivity_attr( const char *dir )
{
char *mntpoint = NULL;
struct attrlist attr;
struct vol_caps caps;
struct get_fsid get_fsid;
struct fs_cache *entry;
/* First get the FS ID of the volume */
attr.bitmapcount = ATTR_BIT_MAP_COUNT;
attr.reserved = 0;
attr.commonattr = ATTR_CMN_DEVID|ATTR_CMN_FSID;
attr.volattr = attr.dirattr = attr.fileattr = attr.forkattr = 0;
get_fsid.size = 0;
if (getattrlist( dir, &attr, &get_fsid, sizeof(get_fsid), 0 ) != 0 ||
get_fsid.size != sizeof(get_fsid))
return -1;
/* Try to look it up in the cache */
entry = look_up_fs_cache( get_fsid.dev );
if (entry && !memcmp( &entry->fsid, &get_fsid.fsid, sizeof(fsid_t) ))
/* Cache lookup succeeded */
return entry->case_sensitive;
/* Cache is stale at this point, we have to update it */
mntpoint = get_device_mount_point( get_fsid.dev );
/* Now look up the case-sensitivity */
attr.commonattr = 0;
attr.volattr = ATTR_VOL_INFO|ATTR_VOL_CAPABILITIES;
if (getattrlist( mntpoint, &attr, &caps, sizeof(caps), 0 ) < 0)
{
RtlFreeHeap( GetProcessHeap(), 0, mntpoint );
add_fs_cache( get_fsid.dev, get_fsid.fsid, TRUE );
return TRUE;
}
RtlFreeHeap( GetProcessHeap(), 0, mntpoint );
if (caps.size == sizeof(caps) &&
(caps.caps.valid[VOL_CAPABILITIES_FORMAT] &
(VOL_CAP_FMT_CASE_SENSITIVE | VOL_CAP_FMT_CASE_PRESERVING)) ==
(VOL_CAP_FMT_CASE_SENSITIVE | VOL_CAP_FMT_CASE_PRESERVING))
{
BOOLEAN ret;
if ((caps.caps.capabilities[VOL_CAPABILITIES_FORMAT] &
VOL_CAP_FMT_CASE_SENSITIVE) != VOL_CAP_FMT_CASE_SENSITIVE)
ret = FALSE;
else
ret = TRUE;
/* Update the cache */
add_fs_cache( get_fsid.dev, get_fsid.fsid, ret );
return ret;
}
return FALSE;
}
#endif
/***********************************************************************
* get_dir_case_sensitivity_stat
*
* Checks if the volume containing the specified directory is case
* sensitive or not. Uses statfs(2) or statvfs(2).
*/
static BOOLEAN get_dir_case_sensitivity_stat( const char *dir )
{
#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
struct statfs stfs;
statfs( dir, &stfs );
/* Assume these file systems are always case insensitive on Mac OS.
* For FreeBSD, only assume CIOPFS is case insensitive (AFAIK, Mac OS
* is the only UNIX that supports case-insensitive lookup).
*/
if (!strcmp( stfs.f_fstypename, "fusefs" ) &&
!strncmp( stfs.f_mntfromname, "ciopfs", 5 ))
return FALSE;
#ifdef __APPLE__
if (!strcmp( stfs.f_fstypename, "msdos" ) ||
!strcmp( stfs.f_fstypename, "cd9660" ) ||
!strcmp( stfs.f_fstypename, "udf" ) ||
!strcmp( stfs.f_fstypename, "ntfs" ) ||
!strcmp( stfs.f_fstypename, "smbfs" ))
return FALSE;
#ifdef _DARWIN_FEATURE_64_BIT_INODE
if (!strcmp( stfs.f_fstypename, "hfs" ) && (stfs.f_fssubtype == 0 ||
stfs.f_fssubtype == 1 ||
stfs.f_fssubtype == 128))
return FALSE;
#else
/* The field says "reserved", but a quick look at the kernel source
* tells us that this "reserved" field is really the same as the
* "fssubtype" field from the inode64 structure (see munge_statfs()
* in <xnu-source>/bsd/vfs/vfs_syscalls.c).
*/
if (!strcmp( stfs.f_fstypename, "hfs" ) && (stfs.f_reserved1 == 0 ||
stfs.f_reserved1 == 1 ||
stfs.f_reserved1 == 128))
return FALSE;
#endif
#endif
return TRUE;
#elif defined(__NetBSD__)
struct statvfs stfs;
statvfs( dir, &stfs );
/* Only assume CIOPFS is case insensitive. */
if (strcmp( stfs.f_fstypename, "fusefs" ) ||
strncmp( stfs.f_mntfromname, "ciopfs", 5 ))
return TRUE;
return FALSE;
#elif defined(__linux__)
struct statfs stfs;
struct stat st;
char *cifile;
/* Only assume CIOPFS is case insensitive. */
statfs( dir, &stfs );
if (stfs.f_type != 0x65735546 /* FUSE_SUPER_MAGIC */)
return TRUE;
/* Normally, we'd have to parse the mtab to find out exactly what
* kind of FUSE FS this is. But, someone on wine-devel suggested
* a shortcut. We'll stat a special file in the directory. If it's
* there, we'll assume it's a CIOPFS, else not.
* This will break if somebody puts a file named ".ciopfs" in a non-
* CIOPFS directory.
*/
cifile = RtlAllocateHeap( GetProcessHeap(), 0, strlen( dir )+sizeof("/.ciopfs") );
if (!cifile) return TRUE;
strcpy( cifile, dir );
strcat( cifile, "/.ciopfs" );
if (stat( cifile, &st ) == 0)
{
RtlFreeHeap( GetProcessHeap(), 0, cifile );
return FALSE;
}
RtlFreeHeap( GetProcessHeap(), 0, cifile );
return TRUE;
#else
return TRUE;
#endif
}
/***********************************************************************
* get_dir_case_sensitivity
*
* Checks if the volume containing the specified directory is case
* sensitive or not. Uses statfs(2) or statvfs(2).
*/
static BOOLEAN get_dir_case_sensitivity( const char *dir )
{
#if defined(HAVE_GETATTRLIST) && defined(ATTR_VOL_CAPABILITIES) && \
defined(VOL_CAPABILITIES_FORMAT) && defined(VOL_CAP_FMT_CASE_SENSITIVE)
int case_sensitive = get_dir_case_sensitivity_attr( dir );
if (case_sensitive != -1) return case_sensitive;
#endif
return get_dir_case_sensitivity_stat( dir );
}
/***********************************************************************
* init_options
*
@ -1837,6 +2080,8 @@ static NTSTATUS find_file_in_dir( char *unix_name, int pos, const WCHAR *name, i
str.MaximumLength = str.Length;
is_name_8_dot_3 = RtlIsNameLegalDOS8Dot3( &str, NULL, &spaces ) && !spaces;
if (!is_name_8_dot_3 && !get_dir_case_sensitivity( unix_name )) goto not_found;
/* now look for it through the directory */
#ifdef VFAT_IOCTL_READDIR_BOTH

6
include/config.h.in
View File

@ -200,6 +200,9 @@
/* Define to 1 if you have the `getaddrinfo' function. */
#undef HAVE_GETADDRINFO
/* Define to 1 if you have the `getattrlist' function. */
#undef HAVE_GETATTRLIST
/* Define to 1 if you have the `getdirentries' function. */
#undef HAVE_GETDIRENTRIES
@ -875,6 +878,9 @@
/* Define to 1 if you have the <sys/asoundlib.h> header file. */
#undef HAVE_SYS_ASOUNDLIB_H
/* Define to 1 if you have the <sys/attr.h> header file. */
#undef HAVE_SYS_ATTR_H
/* Define to 1 if you have the <sys/cdio.h> header file. */
#undef HAVE_SYS_CDIO_H