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|
%% options
copyright owner = Dirk Krause
copyright year = 2012-xxxx
license = bsd
%% header
#include "dk3types.h"
/** Unique file identifier.
If two files produce the same UFI they are both links
to the same file or different file name notations
pointing to the same file, i.e. "x.txt" and "./x.txt".
*/
typedef struct {
#if DK3_ON_WINDOWS
DWORD volser; /**< Volume serial number. */
DWORD indhigh; /**< Higner index part. */
DWORD indlow; /**< Lower index part. */
#else
dk3_um_t device; /**< Device number. */
dk3_um_t inode; /**< Inode number. */
#endif
} dk3_ufi_t;
#ifdef __cplusplus
extern "C" {
#endif
/** Obtain unique identifier for file.
@param pd Result buffer pointer.
@param fn File name to check.
@param app Application structure for diagnostics, may be NULL.
@return 1 on success, 0 on error.
*/
int
dk3ufi_get_app(dk3_ufi_t *pd, dkChar const *fn, dk3_app_t *app);
/** Obtain unique identifier for file.
@param pd Result buffer pointer.
@param fn File name to check (8-bit character string).
@param app Application structure for diagnostics, may be NULL.
@return 1 on success, 0 on error.
*/
int
dk3ufi_c8_get_app(dk3_ufi_t *pd, char const *fn, dk3_app_t *app);
/** Obtain unique identifier for file.
@param pd Result buffer pointer.
@param fn File name to check.
@return 1 on success, 0 on error.
*/
int
dk3ufi_get(dk3_ufi_t *pd, dkChar const *fn);
/** Obtain unique identifier for file.
@param pd Result buffer pointer.
@param fn File name to check (8-bit character string).
@return 1 on success, 0 on error.
*/
int
dk3ufi_c8_get(dk3_ufi_t *pd, char const *fn);
/** Compare two file identifiers.
@param l Left identifier.
@param r Right identifier.
@param cr Comparison criteria (ignored).
@return Comparison result.
*/
int
dk3ufi_compare(void const *l, void const *r, int cr);
#ifdef __cplusplus
}
#endif
%% module
#include "dk3all.h"
#include "dk3ufi.h"
$!trace-include
int
dk3ufi_get_app(dk3_ufi_t *pd, dkChar const *fn, dk3_app_t *app)
{
#if DK3_ON_WINDOWS
BY_HANDLE_FILE_INFORMATION bhfi;
#endif
dk3_stat_t stb;
#if DK3_ON_WINDOWS
HANDLE hFile;
int i;
#endif
int back = 0;
$? "+ dk3ufi_get_app \"%!ds\"", TR_STR(fn)
if((pd) && (fn)) {
if(dk3sf_stat_app(&stb, fn, app)) {
switch(stb.ft & (~(DK3_FT_SYMLINK))) {
case DK3_FT_REGULAR: {
#if DK3_ON_WINDOWS
for(i = 0; ((i < 2) && (0 == back)); i++) {
#if DK3_CHAR_SIZE > 2
hFile = INVALID_HANDLE_VALUE;
#else
#if DK3_CHAR_SIZE > 1
$? ". wide \"%ls\"", fn
hFile = CreateFileW(
fn,
((0 == i) ? (FILE_READ_ATTRIBUTES) : 0),
(FILE_SHARE_READ),
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL
);
#else
$? ". ascii"
hFile = CreateFileA(
fn,
((0 == i) ? (FILE_READ_ATTRIBUTES) : 0),
(FILE_SHARE_READ),
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL
);
#endif
#endif
if(INVALID_HANDLE_VALUE != hFile) {
if(GetFileInformationByHandle(hFile, &bhfi)) {
back = 1; $? ". success %d", i
i = 2;
pd->volser = bhfi.dwVolumeSerialNumber;
pd->indhigh = bhfi.nFileIndexHigh;
pd->indlow = bhfi.nFileIndexLow;
} else {
/* ERROR: Failed to obtain file information! */
dk3app_log_i3(app, DK3_LL_ERROR, 366, 367, fn);
}
CloseHandle(hFile); hFile = INVALID_HANDLE_VALUE;
} else {
/* ERROR: Failed to obtain file information! */
dk3app_log_i3(app, DK3_LL_ERROR, 366, 367, fn);
}
}
#else
pd->device = stb.device;
pd->inode = stb.inode;
back = 1;
#endif
} break;
case DK3_FT_DIRECTORY: { $? ". directory"
#if DK3_ON_WINDOWS
for(i = 0; ((i < 2) && (0 == back)); i++) {
#if DK3_CHAR_SIZE > 2
hFile = INVALID_HANDLE_VALUE;
#else
#if DK3_CHAR_SIZE > 1
$? ". wide \"%ls\"", fn
hFile = CreateFileW(
fn,
((0 == i) ? (FILE_READ_ATTRIBUTES) : 0),
(FILE_SHARE_READ),
NULL,
OPEN_EXISTING,
(FILE_ATTRIBUTE_DIRECTORY | FILE_FLAG_BACKUP_SEMANTICS),
NULL
);
#else
$? ". ascii"
hFile = CreateFileA(
fn,
((0 == i) ? (FILE_READ_ATTRIBUTES) : 0),
(FILE_SHARE_READ),
NULL,
OPEN_EXISTING,
(FILE_ATTRIBUTE_DIRECTORY | FILE_FLAG_BACKUP_SEMANTICS),
NULL
);
#endif
#endif
if(INVALID_HANDLE_VALUE != hFile) {
if(GetFileInformationByHandle(hFile, &bhfi)) {
back = 1; $? ". success %d", i
i = 2;
pd->volser = bhfi.dwVolumeSerialNumber;
pd->indhigh = bhfi.nFileIndexHigh;
pd->indlow = bhfi.nFileIndexLow;
} else { $? "! GetFile... %ld", (long)GetLastError()
/* ERROR: Failed to obtain file information! */
dk3app_log_i3(app, DK3_LL_ERROR, 366, 367, fn);
}
CloseHandle(hFile); hFile = INVALID_HANDLE_VALUE;
} else { $? "! CreateFile %ld", (long)GetLastError()
/* ERROR: Failed to obtain file information */
dk3app_log_i3(app, DK3_LL_ERROR, 366, 367, fn);
}
}
#else
pd->device = stb.device;
pd->inode = stb.inode;
back = 1;
#endif
} break;
default: { $? "! not a regular file"
} break;
}
} else { $? "! stat"
}
} else { $? "! arguments"
} $? "- dk3ufi_get_app %d", back
return back;
}
int
dk3ufi_c8_get_app(dk3_ufi_t *pd, char const *fn, dk3_app_t *app)
{
#if DK3_ON_WINDOWS
BY_HANDLE_FILE_INFORMATION bhfi;
#endif
dk3_stat_t stb;
#if DK3_ON_WINDOWS
HANDLE hFile;
int i;
#endif
int back = 0;
$? "+ dk3ufi_c8_get_app %!8s", TR_8STR(fn)
if((pd) && (fn)) {
if(dk3sf_c8_stat_app(&stb, fn, app)) {
switch(stb.ft & (~(DK3_FT_SYMLINK))) {
case DK3_FT_REGULAR: {
#if DK3_ON_WINDOWS
for(i = 0; ((i < 2) && (0 == back)); i++) {
$? ". ascii"
hFile = CreateFileA(
fn,
((0 == i) ? (FILE_READ_ATTRIBUTES) : 0),
(FILE_SHARE_READ),
NULL,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL
);
if(INVALID_HANDLE_VALUE != hFile) {
if(GetFileInformationByHandle(hFile, &bhfi)) {
back = 1; $? ". success %d", i
i = 2;
pd->volser = bhfi.dwVolumeSerialNumber;
pd->indhigh = bhfi.nFileIndexHigh;
pd->indlow = bhfi.nFileIndexLow;
} else {
/* ERROR: Failed to obtain file information! */
#if DK3_CHAR_SIZE == 1
dk3app_log_i3(app, DK3_LL_ERROR, 366, 367, fn);
#else
dk3app_log_i1(app, DK3_LL_ERROR, 368);
#endif
}
CloseHandle(hFile); hFile = INVALID_HANDLE_VALUE;
} else {
/* ERROR: Failed to obtain file information! */
#if DK3_CHAR_SIZE == 1
dk3app_log_i3(app, DK3_LL_ERROR, 366, 367, fn);
#else
dk3app_log_i1(app, DK3_LL_ERROR, 368);
#endif
}
}
#else
pd->device = stb.device;
pd->inode = stb.inode;
back = 1;
#endif
} break;
case DK3_FT_DIRECTORY: { $? ". directory"
#if DK3_ON_WINDOWS
for(i = 0; ((i < 2) && (0 == back)); i++) {
$? ". ascii"
hFile = CreateFileA(
fn,
((0 == i) ? (FILE_READ_ATTRIBUTES) : 0),
(FILE_SHARE_READ),
NULL,
OPEN_EXISTING,
(FILE_ATTRIBUTE_DIRECTORY | FILE_FLAG_BACKUP_SEMANTICS),
NULL
);
if(INVALID_HANDLE_VALUE != hFile) {
if(GetFileInformationByHandle(hFile, &bhfi)) {
back = 1; $? ". success %d", i
i = 2;
pd->volser = bhfi.dwVolumeSerialNumber;
pd->indhigh = bhfi.nFileIndexHigh;
pd->indlow = bhfi.nFileIndexLow;
} else { $? "! GetFile... %ld", (long)GetLastError()
/* ERROR: Failed to obtain file information! */
#if DK3_CHAR_SIZE == 1
dk3app_log_i3(app, DK3_LL_ERROR, 366, 367, fn);
#else
dk3app_log_i1(app, DK3_LL_ERROR, 368);
#endif
}
CloseHandle(hFile); hFile = INVALID_HANDLE_VALUE;
} else { $? "! CreateFile %ld", (long)GetLastError()
/* ERROR: Failed to obtain file information! */
#if DK3_CHAR_SIZE == 1
dk3app_log_i3(app, DK3_LL_ERROR, 366, 367, fn);
#else
dk3app_log_i1(app, DK3_LL_ERROR, 368);
#endif
}
}
#else
pd->device = stb.device;
pd->inode = stb.inode;
back = 1;
#endif
} break;
default: { $? "! not a regular file"
} break;
}
} else { $? "! stat"
}
} else { $? "! arguments"
} $? "- dk3ufi_get_app %d", back
$? "- dk3ufi_c8_get_app %d", back
return back;
}
int
dk3ufi_get(dk3_ufi_t *pd, dkChar const *fn)
{
int back;
back = dk3ufi_get_app(pd, fn, NULL);
return back;
}
int
dk3ufi_c8_get(dk3_ufi_t *pd, char const *fn)
{
int back;
back = dk3ufi_c8_get_app(pd, fn, NULL);
return back;
}
int
dk3ufi_compare(void const *l, void const *r, int cr)
{
int back = 0;
dk3_ufi_t const *pl;
dk3_ufi_t const *pr;
if(l) {
if(r) {
pl = (dk3_ufi_t const *)l; pr = (dk3_ufi_t const *)r;
#if DK3_ON_WINDOWS
if(pl->volser < pr->volser) {
back = -1;
} else {
if(pl->volser > pr->volser) {
back = 1;
}
}
if(0 == back) {
if(pl->indhigh < pr->indhigh) {
back = -1;
} else {
if(pl->indhigh > pr->indhigh) {
back = 1;
}
}
}
if(0 == back) {
if(pl->indlow < pr->indlow) {
back = -1;
} else {
if(pl->indlow > pr->indlow) {
back = 1;
}
}
}
#else
if(pl->device < pr->device) {
back = -1;
} else {
if(pl->device > pr->device) {
back = 1;
}
}
if(0 == back) {
if(pl->inode < pr->inode) {
back = -1;
} else {
if(pl->inode > pr->inode) {
back = 1;
}
}
}
#endif
} else back = 1;
} else {
if(r) back = -1;
}
return back;
}
|
