diff options
author | Ingo Molnar <mingo@elte.hu> | 2010-04-23 11:10:28 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2010-04-23 11:10:30 +0200 |
commit | 70bce3ba77540ebe77b8c0e1ac38d281a23fbb5e (patch) | |
tree | 34b09a49228f0949ff49dce66a433b0dfd83a2dc /drivers/firewire/core-cdev.c | |
parent | 6eca8cc35b50af1037bc919106dd6dd332c959c2 (diff) | |
parent | d5a30458a90597915977f06e79406b664a41b8ac (diff) |
Merge branch 'linus' into perf/core
Merge reason: merge the latest fixes, update to latest -rc.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/firewire/core-cdev.c')
-rw-r--r-- | drivers/firewire/core-cdev.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c index 702dcc98c07..14a34d99eea 100644 --- a/drivers/firewire/core-cdev.c +++ b/drivers/firewire/core-cdev.c @@ -960,6 +960,8 @@ static int ioctl_queue_iso(struct client *client, union ioctl_arg *arg) u.packet.header_length = GET_HEADER_LENGTH(control); if (ctx->type == FW_ISO_CONTEXT_TRANSMIT) { + if (u.packet.header_length % 4 != 0) + return -EINVAL; header_length = u.packet.header_length; } else { /* @@ -969,7 +971,8 @@ static int ioctl_queue_iso(struct client *client, union ioctl_arg *arg) if (ctx->header_size == 0) { if (u.packet.header_length > 0) return -EINVAL; - } else if (u.packet.header_length % ctx->header_size != 0) { + } else if (u.packet.header_length == 0 || + u.packet.header_length % ctx->header_size != 0) { return -EINVAL; } header_length = 0; @@ -1354,24 +1357,24 @@ static int dispatch_ioctl(struct client *client, return -ENODEV; if (_IOC_TYPE(cmd) != '#' || - _IOC_NR(cmd) >= ARRAY_SIZE(ioctl_handlers)) + _IOC_NR(cmd) >= ARRAY_SIZE(ioctl_handlers) || + _IOC_SIZE(cmd) > sizeof(buffer)) return -EINVAL; - if (_IOC_DIR(cmd) & _IOC_WRITE) { - if (_IOC_SIZE(cmd) > sizeof(buffer) || - copy_from_user(&buffer, arg, _IOC_SIZE(cmd))) + if (_IOC_DIR(cmd) == _IOC_READ) + memset(&buffer, 0, _IOC_SIZE(cmd)); + + if (_IOC_DIR(cmd) & _IOC_WRITE) + if (copy_from_user(&buffer, arg, _IOC_SIZE(cmd))) return -EFAULT; - } ret = ioctl_handlers[_IOC_NR(cmd)](client, &buffer); if (ret < 0) return ret; - if (_IOC_DIR(cmd) & _IOC_READ) { - if (_IOC_SIZE(cmd) > sizeof(buffer) || - copy_to_user(arg, &buffer, _IOC_SIZE(cmd))) + if (_IOC_DIR(cmd) & _IOC_READ) + if (copy_to_user(arg, &buffer, _IOC_SIZE(cmd))) return -EFAULT; - } return ret; } |