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Resolve "Fix `mkstemp` error handling"

merge-requests/728/head
Ralph Little 2022-05-01 22:02:55 +00:00
rodzic e0aad8e814
commit f85e2fb9c2
7 zmienionych plików z 52 dodań i 73 usunięć
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47
backend/avision.c
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@ -7488,11 +7488,27 @@ reader_process (void *data)
return SANE_STATUS_NO_MEM;
if (dev->adf_offset_compensation) {
char duplex_offtmp_fname [] = "/tmp/avision-offtmp-XXXXXX";
int fd = mkstemp(duplex_offtmp_fname);
if (fd == -1) {
DBG (1, "reader_process: failed to generate temporary fname for ADF offset compensation temp file\n");
return SANE_STATUS_NO_MEM;
}
DBG (1, "reader_process: temporary fname for ADF offset compensation temp file: %s\n",
duplex_offtmp_fname);
if (unlink(duplex_offtmp_fname) == -1) {
DBG(1, "reader_process: failed to delete temporary file prior to use: %s\n", duplex_offtmp_fname);
// continue though.
}
DBG (3, "reader_process: redirecting output data to temp file for ADF offset compensation.\n");
fp_fd = fp;
fp = fopen (s->duplex_offtmp_fname, "w+");
fp = fdopen (fd, "w+");
if (!fp) {
fclose(fp_fd);
close(fd);
return SANE_STATUS_NO_MEM;
}
}
@ -8653,33 +8669,21 @@ sane_open (SANE_String_Const devicename, SANE_Handle *handle)
dev->hw->offset.duplex.rear.bottom != 0) )
dev->adf_offset_compensation = SANE_TRUE;
if (dev->adf_offset_compensation) {
strncpy(s->duplex_offtmp_fname, "/tmp/avision-offtmp-XXXXXX", PATH_MAX);
if (! mktemp(s->duplex_offtmp_fname) ) {
DBG (1, "sane_open: failed to generate temporary fname for ADF offset compensation temp file\n");
return SANE_STATUS_NO_MEM;
}
else {
DBG (1, "sane_open: temporary fname for ADF offset compensation temp file: %s\n",
s->duplex_offtmp_fname);
}
}
if (dev->inquiry_duplex_interlaced || dev->scanner_type == AV_FILM ||
dev->hw->feature_type & AV_ADF_FLIPPING_DUPLEX) {
/* Might need at least *DOS (Windows flavour and OS/2) portability fix
However, I was told Cygwin (et al.) takes care of it. */
/* Create the file but close the fd. It is not used to open the file later. :( */
strncpy(s->duplex_rear_fname, "/tmp/avision-rear-XXXXXX", PATH_MAX);
if (! mkstemp(s->duplex_rear_fname) ) {
int fd = mkstemp(s->duplex_rear_fname);
if (fd == -1) {
DBG (1, "sane_open: failed to generate temporary fname for duplex scans\n");
return SANE_STATUS_NO_MEM;
}
else {
DBG (1, "sane_open: temporary fname for duplex scans: %s\n",
s->duplex_rear_fname);
}
DBG (1, "sane_open: temporary fname for duplex scans: %s\n", s->duplex_rear_fname);
close(fd);
}
/* calibrate film scanners, as this must be done without the
@ -8775,11 +8779,6 @@ sane_close (SANE_Handle handle)
*(s->duplex_rear_fname) = 0;
}
if (*(s->duplex_offtmp_fname)) {
unlink (s->duplex_offtmp_fname);
*(s->duplex_offtmp_fname) = 0;
}
free (handle);
}

1
backend/avision.h
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@ -502,7 +502,6 @@ typedef struct Avision_Scanner
/* Internal data for duplex scans */
char duplex_rear_fname [PATH_MAX];
char duplex_offtmp_fname [PATH_MAX];
SANE_Bool duplex_rear_valid;
color_mode c_mode;

5
backend/bh.c
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@ -1895,6 +1895,11 @@ start_scan (BH_Scanner *s)
{
DBG(1, "sane_start: error opening barfile `%s'\n",
s->barfname);
if (fd !=-1)
{
close(fd);
unlink(s->barfname);
}
status = SANE_STATUS_IO_ERROR;
}
}

29
backend/canon-sane.c
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@ -1111,9 +1111,6 @@ sane_start (SANE_Handle handle)
u_char cbuf[2]; /* modification for FB620S */
size_t buf_size, i;
char tmpfilename[] = "/tmp/canon.XXXXXX"; /* for FB1200S */
char *thistmpfile; /* for FB1200S */
DBG (1, ">> sane_start\n");
s->tmpfile = -1; /* for FB1200S */
@ -1121,36 +1118,18 @@ sane_start (SANE_Handle handle)
/******* making a tempfile for 1200 dpi scanning of FB1200S ******/
if (s->hw->info.model == FB1200)
{
thistmpfile = strdup(tmpfilename);
if (thistmpfile != NULL)
{
if (!mkstemp(thistmpfile))
{
DBG(1, "mkstemp(thistmpfile) is failed\n");
return (SANE_STATUS_INVAL);
}
}
else
{
DBG(1, "strdup(thistmpfile) is failed\n");
return (SANE_STATUS_INVAL);
}
s->tmpfile = open(thistmpfile, O_RDWR | O_CREAT | O_EXCL, 0600);
char tmpfilename[] = "/tmp/canon.XXXXXX"; /* for FB1200S */
s->tmpfile = mkstemp(tmpfilename);
if (s->tmpfile == -1)
{
DBG(1, "error opening temp file %s\n", thistmpfile);
DBG(1, "error opening temp file %s\n", tmpfilename);
DBG(1, "errno: %i; %s\n", errno, strerror(errno));
errno = 0;
return (SANE_STATUS_INVAL);
}
DBG(1, " ****** tmpfile is opened ****** \n");
unlink(thistmpfile);
free (thistmpfile);
DBG(1, "free thistmpfile\n");
unlink(tmpfilename);
}
/******************************************************************/

11
backend/canon630u-common.c
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@ -937,7 +937,10 @@ plugin_cal (CANON_Handle * s)
{
DBG (1, "No temp filename!\n");
s->fname = strdup ("/tmp/cal.XXXXXX");
mkstemp (s->fname);
/* FIXME: we should be using fd, not discarding it, and also checking for error! */
int fd = mkstemp (s->fname);
close(fd);
}
s->width = 2551;
s->height = 75;
@ -1581,8 +1584,12 @@ CANON_start_scan (CANON_Handle * scanner)
/* choose a temp file name for scan data */
scanner->fname = strdup ("/tmp/scan.XXXXXX");
if (!mkstemp (scanner->fname))
/* FIXME: we should be using fd, not discarding it! */
int fd = mkstemp (scanner->fname);
if (fd == -1)
return SANE_STATUS_IO_ERROR;
close(fd);
/* calibrate if needed */
rv = init (scanner->fd);

2
backend/canon_lide70-common.c
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@ -3249,7 +3249,7 @@ CANON_start_scan (CANON_Handle * chndl)
chndl->fname = strdup ("/tmp/scan.XXXXXX");
fd = mkstemp (chndl->fname);
if (!fd)
if (fd == -1)
{
return SANE_STATUS_IO_ERROR;
}

30
backend/dc25.c
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@ -134,8 +134,7 @@ static char tty_name[PATH_MAX];
#define DEF_TTY_NAME "/dev/ttyS0"
static speed_t tty_baud = DEFAULT_TTY_BAUD;
static char *tmpname;
static char tmpnamebuf[] = "/tmp/dc25XXXXXX";
#define TMPFILE_PATTERN "/tmp/dc25XXXXXX";
static Dc20Info *dc20_info;
static Dc20Info CameraInfo;
@ -2007,16 +2006,6 @@ sane_open (SANE_String_Const devicename, SANE_Handle * handle)
DBG (1, "No device info\n");
}
if (tmpname == NULL)
{
tmpname = tmpnamebuf;
if (!mkstemp (tmpname))
{
DBG (1, "Unable to make temp file %s\n", tmpname);
return SANE_STATUS_INVAL;
}
}
DBG (3, "sane_open: pictures taken=%d\n", dc20_info->pic_taken);
return SANE_STATUS_GOOD;
@ -2430,14 +2419,15 @@ sane_start (SANE_Handle handle)
* port overruns on a 90MHz pentium until I used hdparm
* to set the "-u1" flag on the system drives.
*/
int fd;
char tmpnamebuf[] = TMPFILE_PATTERN;
fd = open (tmpname, O_CREAT | O_EXCL | O_WRONLY, 0600);
int fd = mkstemp (tmpnamebuf);
if (fd == -1)
{
DBG (0, "Unable to open tmp file\n");
return SANE_STATUS_INVAL;
}
{
DBG (0, "Unable to make temp file %s\n", tmpnamebuf);
return SANE_STATUS_INVAL;
}
f = fdopen (fd, "wb");
if (f == NULL)
{
@ -2509,12 +2499,12 @@ sane_start (SANE_Handle handle)
else
{
fclose (f);
if (convert_pic (tmpname, SAVE_ADJASPECT | SAVE_24BITS) == -1)
if (convert_pic (tmpnamebuf, SAVE_ADJASPECT | SAVE_24BITS) == -1)
{
DBG (3, "sane_open: unable to convert\n");
return SANE_STATUS_INVAL;
}
unlink (tmpname);
unlink (tmpnamebuf);
outbytes = 0;
}
}