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numbers: strtod or strtoul need reset of errno

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API for strtod() or strtoul() needs reset of errno, before it's being
called. So add missing resets in missing places and some also some
errno validation for out-of-range numbers.
This commit is contained in:
Zdenek Kabelac 2017-07-16 10:28:02 +02:00
parent 94838b4df0
commit ba9820b142
8 changed files with 44 additions and 12 deletions
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15
daemons/dmfilemapd/dmfilemapd.c
View File

@ -225,8 +225,9 @@ static int _is_open(const char *path)
while ((proc_dp = readdir(proc_d)) != NULL) {
if (!isdigit(proc_dp->d_name[0]))
continue;
errno = 0;
pid = (pid_t) strtol(proc_dp->d_name, NULL, 10);
if (!pid)
if (errno || !pid)
continue;
if (_is_open_in_pid(pid, path)) {
if (closedir(proc_d))
@ -278,8 +279,9 @@ static int _parse_args(int argc, char **argv, struct filemap_monitor *fm)
fm->nr_regions = 1;
/* parse <fd> */
errno = 0;
fm->fd = (int) strtol(argv[0], &endptr, 10);
if (*endptr) {
if (errno || *endptr) {
_early_log("Could not parse file descriptor: %s", argv[0]);
return 0;
}
@ -288,8 +290,9 @@ static int _parse_args(int argc, char **argv, struct filemap_monitor *fm)
argv++;
/* parse <group_id> */
errno = 0;
fm->group_id = strtoull(argv[0], &endptr, 10);
if (*endptr) {
if (*endptr || errno) {
_early_log("Could not parse group identifier: %s", argv[0]);
return 0;
}
@ -332,8 +335,9 @@ static int _parse_args(int argc, char **argv, struct filemap_monitor *fm)
/* parse [<foreground>[<verbose>]] */
if (argc) {
errno = 0;
_foreground = (int) strtol(argv[0], &endptr, 10);
if (*endptr) {
if (errno || *endptr) {
_early_log("Could not parse debug argument: %s.",
argv[0]);
return 0;
@ -341,8 +345,9 @@ static int _parse_args(int argc, char **argv, struct filemap_monitor *fm)
argc--;
argv++;
if (argc) {
errno = 0;
_verbose = (int) strtol(argv[0], &endptr, 10);
if (*endptr) {
if (errno || *endptr) {
_early_log("Could not parse verbose "
"argument: %s", argv[0]);
return 0;

3
daemons/lvmlockd/lvmlockd-sanlock.c
View File

@ -224,7 +224,10 @@ static int lock_lv_offset_from_args(char *lv_args, uint64_t *lock_lv_offset)
if (rv < 0)
return rv;
errno = 0;
*lock_lv_offset = strtoull(offset_str, NULL, 10);
if (errno)
return -1;
return 0;
}

6
lib/config/config.c
View File

@ -742,14 +742,16 @@ static struct dm_config_value *_get_def_array_values(struct cmd_context *cmd,
switch (toupper(token[0])) {
case 'I':
case 'B':
errno = 0;
v->v.i = strtoll(token + 1, &r, 10);
if (*r)
if (errno || *r)
goto bad;
v->type = DM_CFG_INT;
break;
case 'F':
errno = 0;
v->v.f = strtod(token + 1, &r);
if (*r)
if (errno || *r)
goto bad;
v->type = DM_CFG_FLOAT;
break;

10
libdm/libdm-config.c
View File

@ -679,13 +679,23 @@ static struct dm_config_value *_type(struct parser *p)
switch (p->t) {
case TOK_INT:
v->type = DM_CFG_INT;
errno = 0;
v->v.i = strtoll(p->tb, NULL, 0); /* FIXME: check error */
if (errno) {
log_error("Failed to read int token.");
return NULL;
}
match(TOK_INT);
break;
case TOK_FLOAT:
v->type = DM_CFG_FLOAT;
errno = 0;
v->v.f = strtod(p->tb, NULL); /* FIXME: check error */
if (errno) {
log_error("Failed to read float token.");
return NULL;
}
match(TOK_FLOAT);
break;

4
libdm/libdm-report.c
View File

@ -3185,6 +3185,7 @@ static const char *_tok_value_time(const struct dm_report_field_type *ft,
goto out;
}
errno = 0;
if (((t = strtoull(time_str, NULL, 10)) == ULLONG_MAX) && errno == ERANGE) {
log_error(_out_of_range_msg, time_str, ft->id);
goto out;
@ -3555,6 +3556,7 @@ static struct field_selection *_create_field_selection(struct dm_report *rh,
if (rvw->reserved->type & DM_REPORT_FIELD_RESERVED_VALUE_RANGE)
fs->value->next->v.i = (((const uint64_t *) rvw->value)[1]);
} else {
errno = 0;
if (((fs->value->v.i = strtoull(s, NULL, 10)) == ULLONG_MAX) &&
(errno == ERANGE)) {
log_error(_out_of_range_msg, s, field_id);
@ -3573,6 +3575,7 @@ static struct field_selection *_create_field_selection(struct dm_report *rh,
if (rvw->reserved->type & DM_REPORT_FIELD_RESERVED_VALUE_RANGE)
fs->value->next->v.d = (((const double *) rvw->value)[1]);
} else {
errno = 0;
fs->value->v.d = strtod(s, NULL);
if (errno == ERANGE) {
log_error(_out_of_range_msg, s, field_id);
@ -3594,6 +3597,7 @@ static struct field_selection *_create_field_selection(struct dm_report *rh,
if (rvw->reserved->type & DM_REPORT_FIELD_RESERVED_VALUE_RANGE)
fs->value->next->v.i = (((const uint64_t *) rvw->value)[1]);
} else {
errno = 0;
fs->value->v.d = strtod(s, NULL);
if ((errno == ERANGE) || (fs->value->v.d < 0) || (fs->value->v.d > 100)) {
log_error(_out_of_range_msg, s, field_id);

9
libdm/libdm-stats.c
View File

@ -853,8 +853,9 @@ static int _stats_parse_histogram_spec(struct dm_stats *dms,
val_start = c;
endptr = NULL;
errno = 0;
this_val = strtoull(val_start, &endptr, 10);
if (!endptr) {
if (errno || !endptr) {
log_error("Could not parse histogram boundary.");
goto bad;
}
@ -1174,8 +1175,9 @@ static int _stats_parse_histogram(struct dm_pool *mem, char *hist_str,
val_start = c;
endptr = NULL;
errno = 0;
this_val = strtoull(val_start, &endptr, 10);
if (!endptr) {
if (errno || !endptr) {
log_error("Could not parse histogram value.");
goto bad;
}
@ -1992,8 +1994,9 @@ static int _stats_create_region(struct dm_stats *dms, uint64_t *region_id,
}
if (region_id) {
errno = 0;
*region_id = strtoull(resp, &endptr, 10);
if (resp == endptr)
if (errno || resp == endptr)
goto_out;
}

3
tools/dmsetup.c
View File

@ -1270,8 +1270,9 @@ static int _message(CMD_ARGS)
argv++;
}
errno = 0;
sector = strtoull(argv[0], &endptr, 10);
if (*endptr || endptr == argv[0]) {
if (errno || *endptr || endptr == argv[0]) {
err("invalid sector");
goto out;
}

6
tools/lvmcmdline.c
View File

@ -563,6 +563,7 @@ static int _size_arg(struct cmd_context *cmd __attribute__((unused)),
if (!isdigit(*val))
return 0;
errno = 0;
v = strtod(val, &ptr);
if (*ptr == '.') {
@ -571,13 +572,16 @@ static int _size_arg(struct cmd_context *cmd __attribute__((unused)),
* Lets be toleran and retry with standard C locales
*/
if (setlocale(LC_ALL, "C")) {
errno = 0;
v = strtod(val, &ptr);
setlocale(LC_ALL, "");
}
}
if (ptr == val)
if (ptr == val || errno) {
log_error("Can't parse size argument at '%c'.%s%s", ptr[0], (errno) ? " " :"", (errno) ? strerror(errno) : "");
return 0;
}
if (percent && *ptr == '%') {
if (!_get_percent_arg(av, ++ptr))