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tools: Avoid overflow in _get_int_arg.

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Use strtoull instead of strtol so that argument size is not cut
to 31 bytes on machines with 32-bit long.

(Mikulas)
This commit is contained in:
Alasdair G Kergon 2013-09-18 01:16:48 +01:00
parent a0ca2c11ee
commit 6e912d949b
2 changed files with 5 additions and 3 deletions
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1
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.02.101 -
===================================
Use strtoull instead of strtol in _get_int_arg.
Add devtypes report command to display built-in recognised block device types.
Fix CC Makefile override which had reverted to using built-in value. (2.02.75)
Recognise bcache block devices in filter (experimental).

7
tools/lvmcmdline.c
View File

@ -241,7 +241,7 @@ int metadatatype_arg(struct cmd_context *cmd, struct arg_values *av)
static int _get_int_arg(struct arg_values *av, char **ptr)
{
char *val;
long v;
unsigned long long v;
av->percent = PERCENT_NONE;
@ -262,9 +262,10 @@ static int _get_int_arg(struct arg_values *av, char **ptr)
if (!isdigit(*val))
return 0;
v = strtol(val, ptr, 10);
errno = 0;
v = strtoull(val, ptr, 10);
if (*ptr == val)
if (*ptr == val || errno)
return 0;
av->i_value = (int32_t) v;