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dmsetup: Detect invalid sector supplied to message.

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atoll doesn't check for errors, so invalid sector numbers were silently
accepted in the "dmsetup message" command.

(Mikulas)
This commit is contained in:
Alasdair G Kergon 2013-09-18 01:24:19 +01:00
parent 6e912d949b
commit 68f841fcda
2 changed files with 9 additions and 1 deletions
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1
WHATS_NEW_DM
View File

@ -1,5 +1,6 @@
Version 1.02.80 -
==================================
Detect invalid sector supplied to 'dmsetup message'.
Free any previously-set string if a dm_task_set_* function is called again.
Do not allow passing empty new name for dmsetup rename.
Display any output returned by 'dmsetup message'.

9
tools/dmsetup.c
View File

@ -771,6 +771,8 @@ static int _message(CMD_ARGS)
struct dm_task *dmt;
char *str;
const char *response;
uint64_t sector;
char *endptr;
if (!(dmt = dm_task_create(DM_DEVICE_TARGET_MSG)))
return 0;
@ -785,7 +787,12 @@ static int _message(CMD_ARGS)
argv++;
}
if (!dm_task_set_sector(dmt, (uint64_t) atoll(argv[1])))
sector = strtoull(argv[1], &endptr, 10);
if (*endptr || endptr == argv[1]) {
err("invalid sector");
goto out;
}
if (!dm_task_set_sector(dmt, sector))
goto out;
argc -= 2;